Level Crossing Gate Control using Wireless Radio

ISO 9001:2008 Effective : 22-1-2015 RDSO/SPN/TC-49/2003 Version-3.0 Rev.-1

Specification for Level Crossing Gate Control Equipment with Voice Logging, Voice Messaging & GSRP

Issued by Telecom Directorate, RDSO/Lucknow Page 1 of 28

GOVERNMENT OF INDIA, MINISTRY OF RAILWAYS RESEARCH DESIGNS & STANDARDS ORGANISATION

MANAK NAGAR, LUCKNOW-226011

SPECIFICATION FOR

LEVEL CROSSING GATE CONTROL EQUIPMENT

(Based on Wired / Wireless Data Communication)

With Voice Logging & Voice Messaging Facilities &

Gate Station Response Panel (GSRP) in ASM Equipment

Specification No. RDSO/ TC-49/2003 Ver. 3.0 Rev-1

Issued by

TELECOM DIRECTORATE




Document Data Sheet

Revision

Title of Document Draft technical specification For Level crossing gate control equipment Using Wired / Wireless Data Communication with Private Number Exchange, Voice messaging & Voice Logging Facilities.

Prepared By Shri P.Lal Joint Director / Tele -1

Approved By Shri D.N.Tewari Executive Director / Telecom

Abstract This document specifies technical specifications for LEVEL CROSSING GATE CONTROL EQUIPMENT Using Wired / Wireless Data Communication with Private Number Exchange & Voice Logging Facilities

Document Control Sheet Serial No.

Date of Amendment

Amendment / Revision

Reasons for Amendment

1. 10 -10 -2003

First

Mission No 13: Improving safety at Level Crossings

2. 12-05- 2005

Second

For implementation of suggestion given by Traffic & Track Directorate as well as feedback from field trial.

3. 12-3- 2007

Third

i To incorporate Voice Logging feature in the ASM Unit ii. Standardization of Connectors and Terminals iii. Power Supply input range

4. 22-01-2015 Ver.-3, Rev-1

To incorporate Mike in the ASM Unit for Voice messaging & provision of Gate Status Response Panel (GSRP) to display PN of each closing gate on the basis of recommendation from ECoR,SCR,SER& SECR.




INDEX

SECTION REQUIREMENTS PAGE No 1. GENERAL 5

2. GENERAL SYSTEM REQUIREMENT 5

3. SYSTEM DIAGRAM 9 4. SYSTEM FEATURE 11

5. SYSTEM OPERATION 15

6. SYSTEM SPECIFICATION 19 7. ENVIORNMENTAL CONDITIONS 21

8. WARRANTY 21

9. TYPE APPROVAL 21 10. INSPECTION 23

11. MARKING, SAMPLING 24

12. REJECTION, PACKING 25

13. Annexure- A 26 14. Annexure- B 27

15. Annexure- C 28




ABBREVIATIONS

1 dB Decibel 2 DC Direct Current 3 AC Alternate Current 4 DTMF Dual Tone Multi Frequency 5 Hz Hertz 6 kHz Kilo Hertz 7 MHz Mega Hertz 8 LED Light Emitting Diode 9 MOV Metal Oxide Varistor 10 PCB Printed Circuit Board 11 Rx Receive 12 Tx Transmit 13 S/N Ratio Signal to Noise Ratio 14 AF Audio Frequency 15 SWR Standing Wave Ratio 16 mW milli Watt 17 uW micro Watt 18 STN Station 19 SM Station Master 20 ASM Assistant Station Master 21 LC Level Crossing 22 VHF Very High Frequency 23 UHF Ultra High Frequency 24 EMI Electro-magnetic Interference 25 TEC Telecommunication Engineering Center 26 EUT Equipment under Test 27 SMF Sealed Maintenance Free

28 UL Underwriters Laboratories 29 CSA Canadian Standards Association 30 GSRP Gate Status Response Panel




1. GENERAL

1.0 INTRODUCTION:

This document covers the technical requirements, system features, characteristics and provisions of tests and inspection of LEVEL CROSSING GATE CONTROL EQUIPMENT using wired and wireless Data Communication with Private Number exchange, Voice messaging & Voice Logging facilities for use over Indian Railways and is issued under specification no. RDSO/SPN/TC/049/2003.

1.1 This specification complies with the requirements of Railway Board’s Safety Circular No. 2000/ Safety (A&R) / 19 / 39 dated 08.05.2002.

1.2 The specification is intended to cover the technical provision and does not include the provisions of a contract.

1.3 LOT:

A lot is constituted by “Level Crossing Gate Control Equipment using Wired and Wireless Data Communication” of the same type manufactured in the same factory during the same period, using the same process and materials.

2. GENERAL SYSTEM REQUIREMENT: 2.1 System Requirement

The objective of the equipment is to establish reliable Communication between ASM and LC gates, which will control closing / opening of the gates before and after passing of the train with recoding of data, voice logging, voice messaging & exchange private number.

2.2 ASM & LC Gate Control equipment should perform as follows:-

2.2.1 The system shall be designed in such a way that ASM shall be able to control at

least 8 gates each on either side of the Station / Cabin from his ASM control equipment (in total 16 gates). However this can be increased or decreased depending upon the user’s requirement.

2.2.2 The message sent by ASM meant for a particular LC gate shall go to that gate only.

2.2.3 The message shall be initiated by pressing certain keys (push buttons) provided on

the equipment. On operation of keys by ASM from his equipment, electronically recorded messages shall play in voice form in LC Gate Equipment and ASM should get its acknowledgment automatically and vice-versa. It should be possible to send actual voice message of ASM to LC gates .

2.2.4 The message shall be in Hindi, English or any regional language. Any two languages

depending upon the requirement of the Railway can be selected while placing order to the RDSO approved manufacturer.

2.2.5 The System shall be compatible to work with all types of manned level crossing

gates as defined in Para 4.20




2.2.6 The System shall follow the method of exchanging private number between ASM

and LC gate man as per Railway board Safety circular No. 2000/Safety(A&R)/19/39 dated 08.05.2002 or latest.

2.2.7 ASM control equipment shall have keys like CALL, CLOSE, OPEN etc., so that ASM shall be able to give information to the Gate man by pressing appropriate keys. The keys should be symbolized and made colorful to make equipment more user friendly. LCD panel provided on the equipment shall indicate the keys, pressed by ASM, private number inserted by ASM etc. SEND key must be there to send the information to the respective gates. The ASM equipment will have LCD Panel and Gate Status Response Panel. The LCD panel shall be of 16 Characters x 2 Lines and Gate Status Response Panel for the information of configured gates and private no. sent by gates. Typical Gate Status Response Panel (GSRP) Layout is mentioned in Annexure-C.

2.2.8 LC gate equipment shall have similar types of keys like CLOSE, PROBLEM, OPEN

etc., so that LC gate man shall be able to send his request or information to the ASM. LCD panel provided on the equipment shall indicate the key pressed, private number inserted by LC gate man etc. LCD panel shall be of 16 Characters x 2 Lines.

2.2.9 In case LC gate man is unable to execute the order of ASM for closing the gate, he

will immediately press the PROBLEM key with private number, which will intimate ASM about his inability. In Addition to that gateman should be able to promptly communicate with ASM with the help of Telephone provided with the equipment.

2.2.10 All the events like gate CLOSING, OPENING, PROBLEM, MESSAGES, VOICE

MESSAGE etc must be stored in the data-logger of ASM and LC gate Control Equipment with Date, Time, Train Number, Gate Number and Exchanged Private Number of ASM and gateman, which can be retrieved from both - ASM Control Equipment and LC Gate Equipment - either on laptop or on a DOT matrix printer.

2.2.11 ASM Control Equipment and LC gate equipment should be protected suitably by assigning password. Without correct password it shall not be possible to change the settings of parameters of the equipment. Settings of parameters mean programming of Gate ID, Controller (ASM) ID, Date, Time etc. Provision shall be made on the equipment itself for setting the parameters with the help of assigned keys by authorized Railway person.

2.2.12 When station master/ASM or LC gate man wishes to have voice communication, the same shall be possible by using Microphone or Telephone instrument provided on the equipment.

2.2.13 Voice Communication should be recorded with Date & Time stamping on it. Voice Storage Device shall be part of ASM Control Equipment as described in para 4.22

2.2.14 The ASM Control equipment and LC Gate equipment shall be provided with mechanical Locking arrangement to prevent unauthorized operation of the System. However System Power shall remain in ‘ON’ condition to receive incoming messages and information.

2.2.15 The system should have group messaging facility so that ASM on duty can send a single private number (PN) to all the gates under his control. Individual gates however will transmit individual private numbers

2.2.16 The ASM equipment shall be provided with a microphone so that ASM on duty can verbally advise to gatemen about the train information. The microphone shall Switch-on for voice messaging with RED LED Indication only after entering its two digit private number by ASM.




2.2.17 The ASM equipment should have provision to display PN of each closing gate on Gate Status Response Panel (GSRP) of ASM Equipment, which will have seven segments display and LED indication corresponding to each gate’s status.

2.2.18 GSRP should have provision of Gate Status LEDs (Red and Green) in ASM's Panel to indicate status of gate Closed / Open.

2.2.19 It should also have a LED to indicate pending Gate open requests of the concerned gates, it should be possible to display the status of pending requests of gatemen on GSRP till such time it is acknowledged by ASM

2.2.20 A Reset button shall be provided on GSRP of ASM equipment to reset received PN 2.2.21 Two separate software versions should be used to meet requirement of non-

interlocked and interlocked LC gates 2.2.22 The Gate equipment keys should be symbolized & made colourful, to make

equipment more user friendly for less educated gatemen

2.2.23 Surge protection devices 2.2.23.1 Control line Protection: This device is to be connected before the equipment. The

protection is to be provided in series with the control line. The device should be able to discharge a total surge current of 20 KA of 8/20 µs, DC breakdown voltage should be 300-400 Volts, and AC breakdown voltage at 50Hz should be 300-400 Volts. The arrester Rated voltage of the device should be > 18Volt. The protection level between core-core/ core-gnd should be <25V/<450V The device should be pluggable with a make before break feature. The device should be isolated from the ground with a G.D. tube. The device should be as per the IEC 61643-21 or in compliance with UL specification.

2.2.23.2 Power line protection: Power line protection is to be provided at the power supply

Input. The device should be connected in parallel to the supply. Class C type Stage II protection should be connected. The arrestor should be connected as per TT system of the wiring. The device should be pluggable & should have the potential free contact for remote monitoring of the health status of the device. The device should be able to handle a surge current of 20 KA of 8/20 µs. The device should be tested as per the IEC 61643-1. The connection scheme is provided in the Annexure-B.

2.2.23.3 Lightning Arrestor for Antenna: The provision of lightning arrestor for stacked

dipole Omni-directional antenna shall be made to protect the radio set from lightning or EMI. The protection system as described shall be earthed with the equipment earth. The earth value shall be less than 5 ohm.

2.2.24 An External arrangement will have to be made for light so that the keyboard and LCD Panel can be seen during night, where there is no provision of electricity at the GATE LODGE / GOOMTI. The LED / Bulb of 12V DC/15- 35 mA current consumption along with ON/OFF switch shall be provided for illumination and the same shall be connected with the battery and shall be used only in the night at the time of use of LC Gate equipment.

2.2.25 The cabinet of the equipment shall be powder coated with light colour like off-white, Grey etc.




2.3 System should consist of following

2.3.1 Communication Link between ASM control and LC Gate equipment

The system shall be capable of working both on wired (2-wire overhead line or underground 4 Quad PET cable) or wireless (25 watts VHF radio set). When system is working on physical line, the Radio set shall be in hot standby mode so that in case of any failure of Physical Line, the system should automatically switch over to wireless communication with an indication on LCD panel as well as glow of RED LED provided on the equipment.

2.3.2 ASM Control Equipment: The system must be designed using 16-bit or higher data bus micro-controller of reputed make like Hitachi, Philips, Motorola etc and shall consist of following items .

i. MIL Grade 810C/D/E/F complaint, 25 W VHF radio set. ii. Omni Directional Stacked Dipole antenna having SWR less than 1.5.

iii. RG 217 coaxial cable. iv. Power Supply (12 V/ 15 amps) of reputed make like AXIOM etc. v. Battery (12V, 130 AH) of reputed make like EXIDE, S/F, Hitachi, Amar Raja etc

vi. Telephone Instrument vii. Microphone of reputed make like Ahuja etc.

viii. 80 column DOT matrix printer of reputed make like EPSON. WIPRO, TVS etc. tested. Optionally inkjet printer may also be used with suitable connector.

ix. Gate Station Response Panel shall display the status of configured gates and private no. sent by gatemen.

x. ASM Control Equipment should have locking facility of ASM Keypad when all configured gates have sent their private nos.

2.3.3 LC Gate Equipment: The system shall be designed using 16-bit micro-controller of

Reputed make like Hitachi, Philips, Motorola etc and shall consists of following items:

i. MIL Grade 810C/D/E/F complaint, 25 W VHF radio. ii. Omni Directional Stacked Dipole antenna SWR less than 1.5

iii. RG 217 coaxial cable iv. Wireless Power Supply (12 V/ 15 amps) of Reputed make like AXIOM etc. v. Wireless Battery (12V, 130 AH) of reputed make like EXIDE, S/F, Hitachi, Amar

Raja etc vi. Telephone Instrument




3. SYSTEM DIAGRAM

Railway Station/Cabin

CLOSE

RADIO

OPEN

LC Gate

RADIO

MSG

ASM Control Equipment LC Gate Equipment

2 Wire Medium

LCD Panel 16 x 2 line

LCD Panel 16 x 2 line

2 3 1

4 5 6

7 8 9

<- 0 ->

1 2 3

4 5 6

7 8 9

<- 0 ->

ADVISE SEND

CONFIG

PRINT

ACK

CLOSE

PROB

OPEN

MSG

SEND

CONFIG

PRINT

ACK

SM key Gateman key

Power Supply 230VAC,50HZ-i/p 12 V DC, 10 A- o/p

Solar Panel 70 w

Battrery 12 V , 65 AH

Power Supply 230vAC,50 Hz-i/p 12V DC,10 A- o/p

Solar panel 70 W

Battery 12 V, 65 AH

G1 G2 G3 G4 G5 G6 G7 G8

G9 G10 G11 G12 G13 G14 G15 G16

PowerReset

Pvt. No. Pvt. No.Pvt. No.Pvt. No. Pvt. No.Pvt. No. Pvt. No.Pvt. No.

Pvt. No. Pvt. No.Pvt. No.Pvt. No. Pvt. No.Pvt. No. Pvt. No.Pvt. No.

Gate Status Response Panel

Railway Station /CabinASM CONTROL EQUIPMENT

Figure 3.1




Network of LC GATE Control Equipment Using Wired / Wireless Data Communication

. . . . . . . . . . . .

Figure 3.2

2 – Wire Physical Line

UP

Gate

No 1

UP

Gate

No 8

ASM

Control

Equipment DN

Gate

No 1

DN

Gate

No 8




4.0 SYSTEM FEATURES

4.1 The system shall be designed using micro-controller with a data and voice storage and retrieval facilities. It shall meet all the technical requirements as described in Para 2.0

4.2 ASM equipment shall have facility to instruct the gateman for Opening or closing

of the gate with scheme of exchanging private number as per Railway board directives for different types of manned level crossing gates. Selected train number, gate number, private number shall be visible on LCD panel of ASM control unit before SEND button is pressed by ASM. Gate Status Response Panel shall display the status of configured gates and private no. sent by gatemen. ASM equipment shall have locking facility of Keypad when all configured gates has sent their private nos.

4.3 The system should have group messaging facility so that SM on duty can send a single private number (PN) to all the gates under his control. Individual gates however will transmit individual private numbers

4.4 At the selected LC gate the message in the local language for expected arrival

time of train, its number and direction with private number shall be communicated and remain in repeat mode. Acknowledgment of commencement of playing of message on LC gate equipment should be provided on ASM control unit by automatic glow of ACK LED.

4.5 Gate man shall inform the Opening of LC Gate to the ASM by pressing OPEN

Switch. Local voice message for requesting to open gate shall be repeated at ASM control unit.

4.6 ASM control unit shall have capability to instruct the gate man to OPEN the gate.

Voice message of opening the gate should be played through speaker in the LC gate unit.

4.7 Similarly ASM control unit shall have capability to instruct the gate man not to

open the gate. Voice message shall be played through speaker in the LC gate unit advising not to open the gate.

4.8 Inability for closing the gate for any unforeseen reason can also be informed by

the gate man to the ASM by pressing PROBLEM button with private number. Local voice message of LC gate problem with private number shall be played through speaker in the ASM control unit. In addition to that, Gateman shall immediately talk to ASM / SM on duty by using Telephone provided on the equipment. Whenever voice communication takes place, it will be recorded in Voice Storage Device of ASM Control Equipment with Date and Time stamping on it.

4.9 Priority of Emergency Call over On-going Call

Whenever ASM is having communication with any of the Gatemen, then another Gateman shall not be able to listen the ongoing conversation. However if any other gate man shall have an urgent message to be conveyed to the ASM, then he shall be able to send the message to the ASM by pressing PROBLEM Button with private No. The same shall be displayed on the LCD of ASM Unit with RED




LED indication. The emergency message also be played / reproduced on the ASM unit. In that case ASM shall promptly attend the emergency call by terminating the On-Going Voice Communication

4.10 Announcement of voice message shall continue in the ASM control unit, unless

and until ‘ACK’ button of ASM control unit is pressed by ASM/SM on duty. 4.11 Announcement of voice message shall continue in the LC gate unit, unless and

until ‘ACK’ button of LC gate unit is pressed by Gateman on duty. 4.12 Voice communication shall be possible through telephone between ASM and

gateman. Voice communication shall be duplex when system is working on 2-wire Physical Line. Similarly voice communication shall be semi duplex/ simplex when system is working through wireless on VHF radio set. All Voice Communication shall be recorded in Voice Storage Device of ASM Control Equipment.

(Optional): The system software can be modified to have communication between one gateman to another gateman depending upon the requirement with the intervention of ASM/SM on duty. However ASM / SM on duty will have overriding facility to send messages to the gates even if he is engaged with Telephone communication.

4.13 The ASM Control Equipment and LC Gate equipment shall be provided with

mechanical locking arrangement to prevent unauthorized operation of the System. However System Power will remain in ‘ON’ condition to receive incoming messages and information. In that case it is not possible to operate the equipment, even receipt of on-going voice messages cannot be stopped.

4.14 On either side, there may be a number of level crossing gates which are required

to be CLOSED / OPENED, there shall be a facility of “Group Messaging” to all the gates to facilitate quick transfer of same information to all the gates on either side depending on the requirement (Upside or Downside). However information received from the LC Gate shall be in serial mode and same shall be recorded with time and date.

4.15 It shall be possible to know the Gate status (CLOSED or OPENED) by using the

potential free input contact available in the gate equipment. This facility can be used to relay the Gate closure / open condition by using suitable signaling arrangement as per rule.

4.16 Some limited solution shall be made for train details where train number is of

alpha-numeric like goods train, Saloon, Railway engine, Trolley etc. The same shall be informed by the manufacturer to the Railway user.

4.17 Normally voice as well as data communication between ASM Control unit and

LC gate unit will be through 2-wire physical media. Incase of LINE failure, alternate wireless medium shall work. There shall be dynamic switching to select first available working medium.




4.18 ‘LINE’ or ‘RADIO’ indications shall appear on ASM control unit as well as LC gate unit. So that maintenance staff is made available without delay in case of LINE failure.

4.19 System must have a provision to operate from any of the two available sources of

power supply i.e. Electricity and battery. However Solar Panel must be another source to charge the battery and this shall not be part of the equipment.

4.20 System shall have facility to exchange Private Number for different type of gates

as described in Railway board safety circular no 2000/safety(A&R)/19/39 whose description is as given below.

4.20.1 Traffic level crossing gate, interlocked with stop signals of station, provided

with telephone, with normal position ‘ Open to road traffic’

Gate closing instruction with/without (to be configured while setting of the equipment) private number, from ASM to Gateman.

Gateman gives private number to ASM as acknowledgement (if configured normal, not configured for interlocked ).

4.20.2 Traffic level crossing gate, Non - interlocked with stop signals, provided with

telephone, with normal position ‘Closed to road traffic’.

Gate open request, from gateman to ASM.

Gate open instruction with private number, from ASM to gateman.

Gate close information with private number, from gate-man to ASM.

Confirmation of Gate closure from ASM as acknowledgement to gate man with private number.

4.20.3 Engineering Level crossing gate, Non-interlocked, provided with telephone, with

normal position ‘Open to road Traffic’

Train arrival information from ASM to gateman with Private number.

Gateman acknowledges ASM with private number.

Gate closing instruction from ASM to gateman with private number.

Gateman acknowledges ASM with private number.

Gate open instruction from ASM to gateman with private number.

4.20.4 Engineering level crossing gate, Non interlocked, provided with telephone, with normal position ‘Closed to road Traffic’

Gate open permission from gateman to ASM.

Gate open instruction from ASM to gateman with private number.

Gate close information with private number, from gateman to ASM.

Confirmation of gate closure from ASM as acknowledgement to gateman with private number.

4.20.5 Engineering level crossing gate, interlocked with gate signals, provided with

telephone, with normal position ‘Open to road traffic’

Gate closing instruction with/without (to be configured while setting of the equipment) private number, from ASM to Gateman.

Gateman gives private number to ASM as acknowledgement (if configured normal, not configured for interlocked gates).




4.21 Data logger: 4.21.1 The system shall have Data Logger to record all the events automatically with

Date, Time, Train Number, Direction, Gate Number and exchanged Private Number between ASM and LC gateman, which can be retrieved by connecting a printer or data can be transferred to LAPTOP. The data of events shall be simultaneously logged in both ASM and LC Control Equipment. The timing of all the gate telephones connected with ASM unit shall be synchronized with ASM clock once in 24 hour.

4.21.2 ASM Control equipment and LC gate equipment shall have facility to record all the events related to their operation including event of Voice communication.

4.21.3 Data Storage Capacity: ASM Control equipment and LC gate equipment shall have facility to store minimum one-lakh events as explained in Clause no 4.21.1.

4.21.4 The data shall be stored in the FLASH EEPROM memory so that the stored events can not be erased in case of power failure or fluctuations.

4.21.5 When the Flash EEPROM memory will be full with the logged data , then ‘FIRST IN ‘ information will be ‘FIRST OUT’ from the memory i.e. The system will follow FIFO architecture.

4.21.6 Printout format of retrieved data shall be as follows

====================================================== Sl No DATE TIME MODE FROM GATE PVTN ACTIVITY ======================================================

000 16/08/2003 11:33 LINE GATE 23 -- GATE OPEN REQUEST

001 16/08/2003 11:34 LINE STN 23 56 CLOSE FOR 5698 UP TRAIN

002 16/08/2003 11:41 LINE GATE 23 45 EXCHANGE FOR ASM PVT NO.

003 16/08/2003 11:42 LINE GATE 23 -- VOICE CALL

004 16/08/2003 11:44 LINE STN 23 47 CLOSE FOR 5698 DN TRAIN

005 16/08/2003 12:10 LINE GATE 23 45 EXCHANGE FOR ASM PVT NO

006 17/08/2003 14:54 RADIO GATE 25 -- GATE OPEN REQUEST

007 17/08/2003 14:55 RADIO STN 25 56 OPEN GATE

008 17/08/2003 14:55 LINE STN 23 -- DON'T OPEN GATE

======================================================

4.22 Voice Logging:

4.22.1 The system should be designed in such a way that it should have built-in arrangement to

process, record and store any ongoing voice communication from ASM Unit to LC Gate Units and Vice Versa.

4.22.2 The recording and storage of voice communication should start as soon as call is

established between ASM Unit and LC Gate Units and the same should be terminated with the replacement of handset of the telephone instrument provided with LC Gate and ASM Units. The recorded voice data shall be stored with date and time stamping.

4.22.3 The storage of voice data should be arranged in FIFO architecture and in no way it

should get corrupted once it is stored.




4.22.4 The voice communication file storage device should have provision of its removal in case

of emergency but it has to be interfaced in such a way that removal should not be possible by an unauthorized or unwanted person.

4.22.5 There shall not be any compression of the input voice signal to retain the originality of

the recorded voice communication. The storage device recording capacity shall be 70 Hrs minimum.

4.22.6 Retrieval of Voice Communication Data: There shall be an Ethernet interface port

through which stored voice data can be transferred from ASM Unit to any PC / Laptop for listening and taking backup on CD / DVD media. If required, voice can be retrieved, played and listened through the speaker provided in the ASM Unit by simple operation using keyboard of the unit. Facility shall also be available for selection of any voice/ data for playing by entering desired date and time for specified duration.

4.22.7 In case of any problem in voice recoding, there shall be visual alarm to draw the attention

of the ASM on duty, the same shall keep on glowing till such time acknowledged by the ASM.

4.22.8 The distortion of the recorded voice input signal when reproduced through speaker shall

not be more than 5% w. r. t. original input signal.

5.0 SYSTEM OPERATION: The system shall have capability to search automatically the available medium of communication that is 2 - wire and wireless. Preference of working shall be given to 2-wire. Incase 2 - wire is defective or not available, system will automatically select wireless as medium of communication. The system shall be capable to work either on 2-wire physical line or Wireless or on both mediums.

5.1A ASM Control Equipment [Through Keyboard] 5.1A.1 On Pressing "CLOSE" button, the word "CLOSE” will be displayed on the LCD panel.

Thereafter the Gate Number (GATE :--), Private number (PVTN:--), Direction of arrival train(UPDN:--) and Train number (TRN:---) can be inserted by keyboard and sent the information to the respective gate by pressing SEND button.

5.1A.2 On Pressing "OPEN" button, the word “OPEN” will be displayed on the LCD panel.

Thereafter the Gate number (GATE:--), Private number(PVTN:--) can be inserted by keyboard and sent the information to the respective gate by pressing SEND button.

5.1A.3 Whenever ASM control equipment sends the information by pressing SEND button,

‘ACK’ LED will glow. After confirm reception of the message at appropriate gate, ‘ACK’ LED will go-off.

5.1A.4 After closing the gate, gate man shall press CLOSE button and enter the private No and

press the SEND Button to transfer the information from LC Gate Equipment to ASM Control Equipment The received message will be displayed on LCD panel and once the ASM unit receives Gate CLOSE confirmations of all gates, the seven segment displays and LEDs on the GSRP must start flashing and the ASM units keypad must get locked so that ASM unit must not send any command, as well as playing of Voice message on speaker. In addition to that, ‘CLOSE’ LED will glow on ASM control Equipment.




5.1A.5 In case of any problem with the LC Gate or any untoward incident, the Gateman shall send the information to the ASM by pressing PROBLEM button from his equipment with Private Number. ASM control equipment will get visual indication on LCD Panel, Voice message on speaker with a Glow of ‘PROBLEM’ Red LED

5.1A.6 On receipt of ‘Gate Opening’ request from Gateman, on ASM control equipment there

will be Voice message as well as Glow of ‘OPEN’ LED. 5.1A.7 Incase of 2-w physical line fault, the message will automatically transmitted through

Wireless with an indication ‘RADIO MODE’ glow of LED as well as Display on LCD Panel.

5.1A.8 ‘PTT’ LED shall glow incase of Voice Communication through Telephone on

Wireless between ASM and LC Gate man. The PTT( Press to Talk ) switch and LED shall be energized with VOX ( Voice Operated Switch )

5.1A.9 This equipment shall have built-in Voice Logging facility as described in para 4.22.

5.1B ASM Control Equipment [Through Microphone] 5.1B.1 Press CALL Key. The cursor will point at GATE entry on LCD screen

5.1B.2 Equipment is ready to send voice message to all UP Gates or all DOWN gates Press Left Arrow Key for sending voice message to all UP gates

Press Right Arrow Key for sending voice message to all DOWN gates 5.1B.3 Now cursor moves to PVTN entry on LCD screen. Here enter two digit numeric private number of this Voice Message and

press SEND Key 5.1B.4 Once acknowledgement is received from any of the gates, Red LED of MICROPHONE

will turn on and Microphone is open to record your message for a maximum of 30 seconds duration

5.1B.5 Start speaking required message, till 30 seconds. If message is finished before 30 seconds, then press CALL Key again to disconnect. The MICROPHONE LED will turn off and LCD screen will show as follows:

5.1B.6 Now Private Numbers will be received for close confirmation from LC Gate Equipments

to whom Voice Message was sent. The Private Numbers from LC Gate Equipments will be visible on GSRP, attached to ASM Equipment.

Caution:Voice Instructions to Gatemen by ASM will be effective only if Red LED provided with Microphone is ON.

GATE CALL

PVTN:

Disconnecting in progress…..




5.2A LC Gate Equipment [Through Keyboard] 5.2A.1 On pressing ‘CLOSE’ button the word ‘GATE CLOSE’ will appear in the LCD panel

Thereafter by inserting Private No, the message can be sent to ASM Control Equipment by pressing ‘SEND’ button.

5.2A.2 On Pressing ‘PROB’ button the word ‘GATE PROBLEM’ will appear in the LCD panel

Thereafter by inserting Private No, the message can be sent to ASM Control Equipment by pressing ‘SEND’ button.

5.2A.3 On pressing ‘OPEN’ button the word ‘GATE OPEN’ shall appear in the LCD panel and

message can be sent to the ASM control equipment by pressing ‘SEND’ button. 5.2A.4 When the LC Gate equipment receives any message from ASM control equipment, voice

message will play in the LC gate equipment. On pressing ‘ACK’ button the voice message can be muted.

5.2A.5 Whenever LC gate equipment sends the information by pressing SEND button, ‘ACK’

LED will glow. After confirm reception of the message at ASM Control Equipment, ‘ACK’ LED will glow OFF.

5.2A.6 On receipt of ‘Gate Open Message’ from ASM control equipment, there will be voice

message on the speaker with an indication of ‘OPEN’ LED. 5.2A.7 On receipt of ‘Gate Close Message’ from ASM control equipment, there will be playing

of voice message on a speaker with a glow off ‘CLOSE’ LED. 5.2A.8 Incase 2-wire physical line fault, the message will be automatically transmitted through

wireless with an indication of ‘RADIO MODE’ LED glow as well as display on LCD panel.

5.2A.9 ‘PTT’ LED shall glow in case of voice communication through telephone on wireless

between LC gate man and ASM. The PTT ( Press to Talk) LED and switch shall be energized with VOX (Voice Operated Switch).

5.2B LC Gate Equipment [Through Microphone] 5.2B.1 On receiving, Voice Message from Station, following Menu appears on your equipment

LCD screen

Note: Press CALL Key again and repeat Step 1 to Step 5 to send another voice message to all UP Gates or all DOWN gates.

Equipment LCD screen will show as follows:

GATE CALL

PVTN:

PVTN -11

LIVE RECORDING PVTN – 11 is Station Master’s Private Number




Voice Message from Station will be heard live on LC Gate Equipment Speaker

Caution: Equipment Keypad is locked at this time

5.2B.2 After receipt of disconnect signal from ASM equipment or a timeout of 30 seconds the

recorded announcement starts repeating, following Menu appears on LC Gate Equipment LCD screen

Now same message from station will keep playing on LC Gate Equipment Speaker.

Caution: Equipment Keypad is now unlocked to enable to press Ack Key

5.2B.3 Press Ack Key to mute Voice Message from Station

On Pressing Ack Key, Voice Message from Station stops playing and Pvt. No. announcement starts and following Menu appears on LC Gate Equipment LCD screen

On pressing ACK key again, Home screen will appear and Playing of Station Master Private Number is stopped.

5.3 Print-out: 5.3.1 All the events recorded by the Data-logger as explained in Para 4.21 can be

downloaded / printed by connecting Dot Matrix Printer on the assigned port of the ASM Control equipment and LC Gate equipment by pressing ‘PRINT’ button and entering the date.

5.3.2 Provision shall be made to take printout from LC gate equipment.

5.3.3 ASM on duty can take print out on daily basis as per his requirement or as defined

by the user of the equipment.

PVTN -11

PLAYING RECORD PVTN – 11 is Station Master’s Private Number

PVTN – 11 is Station Master’s Private Number

PVTN -11

PLAYING PVTN




6.0 SYSTEM SPECIFICATION:

6.1 Electrical Parameters for ASM Control Equipment and LC Gate Equipment

Sl No Parameters Characteristics

A1 Power Supply

SMPS Power plant with battery charger Input: 165 V to 260 V AC, 50Hz Output: 12 V DC +/- 10 %, 10A

A2 Current Consumption

6 Amp max on wireless 800 mA max on 2–wire physical line

A3 Event Logging i Number of Data events ii Real Time Clock iii Print-out iv Voice Data Storage Capacity

Min 1 lac Year, Month, Date, Hour and Minute By connecting an DOT Matrix /inkjet printer Min 70 Hours

A4 Speaker Output Level 3 Watts A5 Microphone Impedance 1 K

A6 Gate Identification number Two digits

A7 LCD display 16 x 2 alphanumeric, with back-lit LED A8 RTC Battery backup Min one year

A9 GSRP

The seven segment LED display must be used for Pvt No display. It must be of Green Color and minimum 12 mm height. The Gate Status Response Panel must operate on 12V DC (+/- 20%) supply

6.2 25 Watt Radio: 6.2.1 VHF radio set of 25 watt for wireless communication shall be procured from DGS&D

approved source. The radio shall be MIL Grade, 810C/D/E compliant. 6.2.2 Spec of the Radio:


A. GENERAL A1. Frequency Range 146 to 174 MHz A2. Channel Spacing 12.5 kHz or 25 kHz A3. Emission 8K50F3E or 16KOF3E A4. Frequency Spread 28 MHz A5. Frequency Stability 5 PPM A6. Type of Operation Simplex / Semi - duplex, Press to talk A7. Operating Temperature Range -300 C to 550 C A8. Speaker Impedance 8 Ω

B. TRANSMITTER B1. RF Power Output 10 to 25 Watt B2. Frequency Deviation +/- 5 kHz (W type), +/- 2.5 kHz (N type) B3. Modulation Sensitivity 80mV for 60% max. deviation at 1000Hz. B4. Modulation distortion Better than 5% B5. Modulation fidelity Within +1, -3 dB of 6 dB / Octave B6. Spurious and Harmonics -36 dBm (.25uW) B7. Output Impedance 50 Ω

C. RECEIVER C1. Sensitivity 0.3μv / -118 dbm at 12 dB SINAD C2. Selectivity Better than 60 dB




C3. Image and Spurious rejection Better than 65 dB C4. AF distortion Better than 5% C5. Audio output Better than 250 mw with less than 5% distortion

at 1 kHz ref. measured at specified AF output. C6. Squelch Sensitivity Better than –119 dbm C7. AF Response Within +1 , -3 dB of 6 dB / Octave D Specs of Telephone Instrument TEC approved

6.3 Specs of Microphone

Sl No

Parameters Characteristics

A1 Type Unidirectional Electret Condenser Microphone

A2 Frequency Response 50-16,000Hz

A3 Impedance 1 K A4 Power Source 3V-9V DC

6.4 Specs of Stacked Dipole Omni Directional Antenna


A ELECTRICAL SPECIFICATIONS

A1 Frequency Range – MHz 146 - 174 A2 Bandwidth – MHz 10

A3 Impedance – Ohms 50 unbalanced

A4 VSWR – less than 1.5 A5 RF Power handling capacity – Watt 100

A6 Termination UHF – female

A7 Lightening Protection Direct Ground B MECHANICAL SPECIFICATIONS

B1 Support Pipe Material Aluminum

B2 Support Pipe Length – feet 12

B3 Support Pipe O D – mm 50 B4 Support Pipe Wall Thickness – mm 2.5

B5 Radiating Elements Material Aluminum

B6 Radiating Elements Material O D – mm 12 B7 Radiating Elements Mounting Clamp Cast Iron / Aluminum

B8 Mounting Clamp for Antenna Cast Iron / Aluminum

B9 Shipping Length - Feet 6.5

6.5 Specs of Antenna Cable

Sl No Parameters Characteristics A1 Length As per site requirement

A2 Size RG 217 Low Loss Cable

A3 Jacket Polyethylene Black

A4 Outer Diameter 14 mm

A5 Characteristic Impedance 50 + / - 1 ohm

A6 Average Power Rating 1.00 kW at 100 MHz A7 Attenuation 0.05 dB / Mt at 100 MHz

6.6 Specs of 12 Volts Battery (SMF battery)


A1 Voltage 12 V

A2 Backup Capacity Min 65 AH A3 Can work with Radio 25 W




A4 Maintenance Free Maintenance

6.7 Specs of Solar Panel


A1 Current at Pm Max 1.17 Amps to 2.5 Amp A2 Solar Panel Open Circuit Voltage 19.2 V max

A3 Voltage at Pm Max 17 Volt

A4 Charging Type Constant Current & Constant Voltage A5 Short Circuit Current 1.34 Amps

6.8 Terminals / Connectors: 6.8.1 It is necessary to terminate the 2W / 4W input lines through screw terminals /

connectors to achieve lowest contact resistance & to avoid possibility of corrosion due to different climatic conditions, all metallic parts of the connectors / terminals should be non ferrous. The terminals & connectors should have locking arrangement so that input lines to the equipment should not get disconnected inadvertently. Terminals / Connectors to be used shall be in compliance with DIN VDE 0627, 993 – 05 and UL / CSA similar to phoenix contact MSTB 2.5 (2 to 24 positions) – GF 5.08 & MSTB 2.5 (2 to 24 positions) – STF 5.08

6.8.2 D Link or similar make RJ11 & RJ45 connectors shall be used to connect the 2W

telephone sets / lines / PC to eliminate any inadvertent disconnection of the input / output lines.

6.8.3 All other connectors like antenna, power and solar panel shall be lockable so that

it can not get disconnected inadvertently

6.9 The Earthing arrangement shall be provided by the Railways & is not the part of the equipment.

7.0 Environmental Conditions

The equipment shall be designed to comply environmental conditions as envisaged in Department of Telecommunication quality management document QM 333 in category B - 2.

8.0 Warranty The equipment shall have a minimum warranty of 1 year with a liability of technical support like stores, AMC and technical guidance for another 5 years or as per the tender requirements of the Railway

9.0 Type Approval The ASM / LC gate control equipment should have type approval from RDSO. The type approval test shall include factory test and climatic test to check the compliance of the specified parameters. The test shall be conducted as per test procedure to be prepared and submitted by the manufacture, RDSO may modify the test procedure, if required. The type approval test shall be conducted preferably at RDSO / Lucknow. However, in case of any difficulty of infrastructure or any other facility at RDSO, Lucknow, the type approval test may be conducted either at Manufacturer factory or in any other mutually agreed test Laboratory. All instrumentation and set up required for the test shall be provided by the manufacturer. Note: A complete set of items as per clause 2.3.2 and 2.3.3 will be submitted for Type

approval. However Type Tests will be carried out on items 2.3.2 and 2.3.3 only. Other items will be from DGS&D/DCPW approved source. The certificate of the same shall be submitted at the time of approval.




9.1 Type Tests

Number of samples for type test shall consists of one ASM control equipment and one LC gate equipment with all accessories The type approval of the equipment shall consist of following tests.

9.1.1 ‘BURN-IN’ Test: The equipment shall be ‘BURN-IN’ for a period of one day at

50o C prior to the actual measurement of parameters. During the burn - in the equipment shall be kept in ‘ON’ condition.

9.1.2 Bench Tests: After ‘BURN – IN’ Test, full functional tests shall be conducted as

per specifications. 9.1.3 Environmental Testing

The ranges of ambient temperature and humidity within which the equipment performance will be tested as per QM-333, Table 4.3, Category- B as given below

a. Ambient temp. range over which specification

are guaranteed ( 50% RH at max. temp.) 0°C to 50° C

b. Ambient temp. range over which equipment is to remain operational without causing irreversible damage (50% RH at max. temp)

-5° C to

55°C

Applicable for thermal cycle only

c. Storage temperature (50% RH at max. temp) without causing irreversible damage.

-5° C to 60°C

d. Max. temp. for which specification are guaranteed at 95% humidity

35° C Applicable for damp heat steady state

e. Maximum temp. range at which Equipment shall survive at 95% RH

40° C

The environmental testing shall be conducted at per specification No. QM 333 for environmental testing of electronic equipment for transmission and switching use issued by DOT in Sept. 1990 (with latest amendment). The testing shall be as per category ‘B2’ and following tests shall be carried out.

9.1.3.1 Dry Heat : 55 ±2ºC, Duration : 12 hours 9.1.3.2 Damp heat (cyclic) Duration : 12 hours First Cycle of two cycles

Upper temperature 40º C Variant : 1 9.1.3.3 Rapid temp. cycling

Low Temperature : -0º C ± 3º C High Temperature : 55º C ± 2º C Rate of change of temperature over a period of not more than 5 minutes shall be ±0.2º C per minute. Duration of Exposure: 3 hours

9.1.3.4 Damp heat steady state Duration : 4 days Temperature : 35 ±2º 0 C Relative Humidity: 95 + 0 or 95 –2% in the temperature range

9.1.3.5 Vibration Frequency: 5 to 350 Hz Vibration Amplitude: +/- 6 mm constant displacement Duration at Resonance: 2 hours at each axis Magnitude of “g”: 1.5




9.1.4 Surge / Transit Testing

Manufacture and assembly of this equipment shall be made according to the standard practices adopted by International Electro - Technical Commission (IEC61000-4-5). The equipment shall undergo testing on Surge / Transient as per latest guidelines as follows. Pulse: 1.2/50 uSec.

Amplitude: 0.5 KV (DM)

1.0 KV (CM) No. of Pulse: 5 in each polarity Positive and Negative. EUT: Energized condition Test method: IEC61000-4-5

9.1.5 Final Test: After competition of all above said tests as explained in Para 9.1 , final

functional test and measurement of electrical parameter shall be conducted. 9.1.6 Field Trial

On competition of all the tests mentioned in Para 9.1.1, 9.1.2, 9.1.3, 9.1.4, field trial for four to six weeks will have to be conducted by installing complete equipment in a selected station and gates to judge the performance of the system.

9.2 After successful completion of all tests and field trail, as per para 9.1, type Approval Certificate may be issued.

10.0 Inspection

10.1 The inspection and test shall be carried out to the satisfaction of inspecting authority. 10.2 The purchaser or his nominee shall have the right to be present during all stages of

manufacture and shall be accorded all reasonable/complete facilities to satisfy himself that LC gate Control Equipment are being manufactured in accordance with the terms and conditions of the specification. The purchaser or his nominee shall have the right to reject any material that fails to confirm to the specification.

10.3 Test certificates incorporating the results of the routine test and other manufacturing tests must be furnished in duplicate prior to the inspection for the use of purchaser/his nominee.

10.4 Burn – In Test The equipment shall be burn – in for a period of one day at 50o C prior to the actual measurement of the parameters. During the burn-in, the equipment shall be kept in ‘ON’ condition.

10.5 Visual Inspection

10.5.1 The equipment shall be visually inspected to ensure that it is free from any cracks or any other imperfection including marking and painting etc

10.5.2 The equipment shall be checked to satisfy general requirement as per Para 11 & 14

10.6 Tests After burn - in and visual inspection, full functional tests shall be conducted as per Para 5.1 and Para 5.2.

10.7 Acceptance Tests

Acceptance Test shall comprise of the following tests taken in sequential order as follows 10.7.1 Visual Inspection ( Para 10.5 ) 10.7.2 Electrical Characteristics Tests ( Para 6.1.A1 & 6.1.A2 ) 10.7.3 Performance Test ( Para 5.1 & 5.2 )




10.8 Routine Tests

Following routine tests shall be conducted by the manufacturer on all the LC Gate Control Equipments 10.8.1 Visual Inspection ( Para 10.5 ) 10.8.2 Electrical Characteristics Tests ( Para 6.1.A1 & 6.1.A2) 10.8.3 Performance Test ( Para 5.1 & 5.2 )

10.9 Technical Literature

Technical literature consisting of principles of working, circuit / block diagram maintenance and troubleshooting procedures, assembly drawing, spares parts catalogue, printed card layout diagram, along with the position of the components as per circuit diagram, shall be supplied along with equipment unless otherwise not desired by the user Railway.

11.0 MARKING 11.1 The following information shall be clearly embossed / engraved / screen-printed at a

conspicuous place. a) Item Name b) RDSO Specification Number c) Name or Monogram of the Manufacturer d) Year of manufacture e) Serial Number

11.2 Any other information specially requested and required by Purchaser. 12.0 SAMPLING:

Unless otherwise agreed to the purchaser and the supplier, the double sample plan given

as below shall be adopted:

Lot consisting LC Gate 1st Sample size 2nd Sample Combined Sample Acceptance Rejection Control Equipment (NI) size (N2) size (N1 + N2) Number (C1) Number (C2) Under 25 3 6 9 0 2 25 to 50 7 14 21 0 3 51 to 100 10 20 30 0 3 101 to 200 13 26 39 0 5 201 to 300 20 40 60 1 5 301 to 500 25 50 75 1 6

12.2 The number of Level Crossing gate control equipment (NI) as given in Col.2 shall

first be selected and subjected to the acceptance test. If in the first sample, the number if defective LC Gate Control Equipment, that is those failing in one or more acceptance test is less than or equal to the corresponding number (C1) given in Col.5, that lot shall be considered as conforming to the requirement of the acceptance test. If the number of defective level crossing gate control equipment in the first sample is greater than or equal to the rejection number in Col.6, the lot shall be considered as not conforming to the requirements of the acceptance test. If number of defective level crossing gate control equipment in the first sample lies between C1 and C2 a second sample of size N2 as given in Col.3 shall be selected and subjected to the acceptance test. If in the combined sample, the number of defective level crossing gate control equipment is less than C2, the lot shall be




considered as conforming to the requirement of acceptance test.

12.3 The Sample shall be selected at random from at least 10% of the Packages. For random selection of packages, all the packages in the lot shall be arranged in a serial order and every ‘r’ the package shall be selected until the requisite number of Packages is obtained.

Total number of packages in the lot

‘r’ being the integral part of : -------------------------------------------------- Total number of Packages to be selected

13. REJECTION

Any of the materials, which do not comply with the requirements of this specification, may be rejected.

14. PACKING

Equipment shall be suitably packed so as to avoid any damage or loss during storage and transit.




Annexure - A

SEQUENCE OF TYPE TEST

Two Samples ( Para 9.1 )

Visual Inspection ( Para 10.5 )

Performance Test ( Para 5.1 & 5.2 )

Electrical Characteristics ( Para 6.1.1 & 6.1.2 )

One Sample

Environmental

Test ( As per Para 9.1.3.1, 9.1.3.2, 9.1.3.3, 9.1.3.4 )

One Sample Vibration Test Surge / Transit Testing

( As per Para 9.1.3.5 ) ( As per Para 9.1.4 )




Annexure - B




ANNEXURE-C

G1 G2 G3 G4 G5 G6 G7 G8

G9 G10 G11 G12 G13 G14 G15 G16

PowerReset

GATE STATUS RESPOSE PANEL

UP DIRECTION GATES

DOWN DIRECTION GATES

Display

Green LED

Red LED

Yellow LED

PN

Gate Close

Gate Open

Gate Open Request

Layout for Gate Status Response Panel (GSRP)

For Every Gate on GSRP

- Closed Gate Status Green LED

- Open Gate Status Red LED

- Gate Opening Request Yellow LED

*****END*****

Documents

Level Crossing Gate Control using Wireless Radio