ESABB01INA01 V2-18 Febrero 2006 Sistema Neptuno

Figure 2.-

Communications module

Figure 3.- Basic control card

Figure 1.- Remote GPRS station

at the base of a hydrant

Make: ABB. Models: Neptuno G4H (GPRS) R4H (Radio) GR4H (GPRS and Radio) Main Characteristics: GPRS communications that permits the concentration of other units via

radio

General System Description

The ABB GPRS solution for flexible, reliable, low cost irrigation control is based on the Neptuno 4H remote stations, together with a GPRS communications network structure.

The Neptuno 4H System remote stations communicate with the Central Station via GPRS,

which provides them with unequalled flexibility during installation and configuration. Since specific infrastructure is not required (it is necessary in a radio or cable system), the project definition is

extremely simple, implementation is fast and any changes are immediate (Figure 1).

If signals are to be concentrated at nearby hydrants (either due to a lack of GPRS coverage or in order to optimise communications) remote radio and mixed GPRS-Radio stations are available. In these configurations, the mixed remote stations operates as an intelligent concentrator for other remote radio-only equipment (the maximum depends on the hydrants for each one), the data of which are held in memory in the same way as their own. The only difference between the two types of remote station is the modem installed in the communications module (Figure 2). In radio, low power UHF may be used without any need for legalisation, long-range and expanded spectrum requires legalisation.

Remote stations are fully stand-alone and intelligent. If communications are lost, they will continue to operate normally. Even when there is a

brief power outage, all data will be saved (including meters, irrigation programs and events) in non-volatile memory and they will be held until power returns and normal operation is resumed.

Remote stations have minimum consumption (less than 200 micro-amps practically all the time) thanks to the hardware design and intelligent component management, which allows them to “sleep” whenever these same elements are not required, which provides them with excellent autonomy. They can accept various power supply systems such as twin-wire cable, battery, solar panel, hydro-turbine or ac power. The outputs are fitted with short-circuit protection and also against power supply over-voltages.

The control card (Figure 3) accepts irrigation programs for one week, with up to four daily irrigation sections per hydrant, with valve opening/closing by time, volume or mixed. Volumes and flow rates are calculated for each hydrant, in addition to total and partial meters, including schedules.

The equipment program can be completely modified in a remote fashion, with the subsequent savings this means in project maintenance.

Installation is both very simple and fast. It is only necessary to wire the field signals to the plug-in terminal strips, position the box and install the terminal strips on the cards. The expansion modules are connected to the main module and are fitted with their own plug-in terminals strips.

The Neptuno 4H family is compatible and can be integrated into other ABB equipment via GPRS, cable or radio.

Equipment Presentation Neptuno 4H System

GPRS-controlled Irrigation

ESABB01INA01 V2-18 Febrero 2006 Sistema Neptuno

Figure 4. Remote GPRS

Outside Weather Installation

Basic Neptuno 4H Unit

The basic unit allows the management of:

Four digital outputs for two or three-wire bistable solenoid operation at 6 or 12V.

Four digital inputs for meters Up to three analogue inputs Two general purpose digital inputs One digital output with 0.5 A relay latch

It also includes:

Industrial microprocessor (Table 1- ) Real time clock Memory. It can address up to 2MB (see Table 1- for types and capacities)

Communications module with GPRS and/or radio modems according to model

Status LED

Power supply module. According to model it controls battery charging. It monitors battery and solar panel voltages (Table 2- )

Ports. o Communications: 2 USART, 1 I2 C, 1 for

GPRS/Radio. o ICSP (In-circuit Serial Programming) for

programming and debugging. o I/O expansion. o Power supply.

Buses. o For connection to the communications

module. o For expansion control. o For power supply module.

Casing according to model (IP65, IP66 or IP67)

Table 1- Microprocessor and memory specifications

Power Supply Modules

Acceptable power supplies

6 or 12 Vdc batteries Solar panel Via communications cable Hydro-turbine ac supply

Integrated Power Supplies

Low power and low consumption

3.6 V with 100 mA maximum

High power Current up to 3A

15V Power supply Switching power supply providing an output of up to 15V with 4-12V inputs

Solenoid trip 6-12V with adjustable time pulses (default 80 ms)

Table 2- Power supply module specifications

Expansion Modules

1-4-8 Hydrants Each hydrant includes a valve output and a meter input

Digital inputs/outputs Additional general-purpose digital inputs and outputs (4/4 or 8/8)

Analogue inputs Analogue inputs for connection to analogue voltage or current sensors at 10 or 12-bit resolution.

Microprocessor PIC18LF8720 Power supply 2-5 volts

Operating frequency

4 MHz

Memory

FLASH Internal 128 Kbytes. Use: holds program

EEPROM Internal 1,024 bytes External up to 384 Kbytes in 64 Kbytes increments Use: non-volatile storage of data and configurations ¡

RAM Internal 3,840 bytes External 128, 256 or 512 Kbytes Use: working data

ESABB01INA01 V2-18 Febrero 2006 Sistema Neptuno

Figure 5.- Possibilities that permit the ABB GPRS solution

Communications Network

Communications between remote stations and the Central Station are carried out via a local area network over GPRS (compatible with UMTS), which guarantees reliable connectivity without any need for its own infrastructure.

ABB has provided the necessary means so that the GPRS system is optimum, not just from the technical point of view, but also the economic, for the development and implementation of the “Communications Service for Irrigation”.

Technically, this service makes GPRS or UMTS communications possible between the equipment with an availability that is much higher than any other solution. Moreover, its also makes “added value” applications viable for irrigators and irrigator communities, just as described below.

With respect to the economic aspect, it leads to minimum operating prices per hydrant and year, placing access to the very latest technology for the control and optimisation of water use within the reach of any community.

Added Value

The GPRS solution implemented by ABB via the Neptuno System provides a full range of possibilities for enhanced precise control of irrigation zones just as shown in Figure 5.

The Neptuno System provides the Irrigator Community with absolute control over the installation, it provides all the information and manages it according to their requirements, optimising water usage, the necessary means and the involved costs.

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With the Added Value Services the Irrigator Community is able to:

To remotely establish, via mobile phone, PDA or PC, the situation at any plot and take any necessary action.

Integrate in real time the information coming other equipment (security cameras for unattended or remote installations, intruder, fire or presence detection, and IP voice etc)

Transmit images or video for decision taking.

Maintain the irrigators informed in real time of any event, both those that could affect their activities (piping rupture, supply failure, weather, irrigation recommendations and pricing information) as well as those produced in the community (meetings, billing, unpaid bills situations, publication of aids and subventions and supplier offers).

Payment collection management

Issue or cancel individual irrigator licences for remote access to their plots, individually assigning the access level (display only, modify programs, issue commands etc).

Except for having WAP, which is available in all models, no other requirement is necessary for the mobile telephone to be used. The system will detect the model and automatically adjust to provide the best possible display and operation in accordance with terminal specifications, as shown by the three examples in Figure 6.

Figure 6.- Mobile telephone access is adapted to the employed terminal characteristics

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Figure 7.- GPRS solution demonstration at the 'Centre'

The Neptuno System enables the Irrigator to optimise costs and work in a more comfortable and efficient manner.

With the Added Value Services the Irrigator is able to (depending on the access level issued by the Irrigator Community):

To remotely establish, via mobile phone, PDA or PC, the situation at his plots, either automatically generated by events (for example, irrigation start or finish and operational alarms etc) on or command. In cases, he will receive information on valve status, operating mode, irrigation programs, data on previous and current irrigations, volumes, flow rates and alarms etc.

Remotely modify irrigation programs.

Issue remote commands

ABB in Irrigation

Leader in irrigation automation in Spain, ABB possesses wide experience in projects that individually or integrally cover all the involved water networks, from the primary (pumping and reservoirs etc) right up to the hydrants. Thanks to this, it is fully aware of irrigator needs and those of the Irrigator Community and provides them with the alternative that best satisfies these same needs.

ABB has solutions that cover the use of all existing communications technologies, from the classic cable to the very latest GPRS/UMTS. Thus, the proposals made are not intended to direct the customer to any specific technology, but to search for the solution that best adapts to specific technical and economic requirements of each project.

ABB collaborates with various public and private organisations in the dissemination of applications that the very latest technologies have on offer for irrigation and in the search

for optimisation in the management and use of water (Figure 7).

Various references to projects carried out using ABB equipment are:

Irrigator Community Palos de la Frontera Sectors I and II (Huelva)

Irrigator Community Palos de la Frontera Sector III (Huelva)

Irrigator Community of Mula (Murcia)

Irrigator Community of Lorca (Murcia)

Irrigator Community Totana (Murcia)

Irrigator Community Alhama de Murcia, Phase I

Irrigator Community of Puebla de Mula (Murcia)

Irrigator Community Moguer Zone 1 (Huelva)

Irrigator Community Rambla Morales (Almeria)

Irrigator Community El Pozo del Calvario (Valencia)

Irrigator Community Gilet (Valencia)

Irrigator Community Museros (Valencia)

Irrigator Community Fray Humilde (Valencia)

Irrigator Community San Isidro (Valencia)

Irrigator Community Arco Sur Phase I (Murcia)

Irrigator Community Carlet (Valencia)

Rio Genil Irrigation Channel Network (Granada)

Asea Brown Boveri, S.A Water Automation C/ Cronos 57 28037 Madrid. Tlf: +34 91 581 0748 Fax: +34 91 581 0198

www.abb.com

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ABB (www.abb.com) is a leading company in electrotechnical and automation technology, which collaborates with industrial customers and public services companies in order to improve their performance and, at the same time, reduce their environmental impact. The companies within the ABB group operate in close to one hundred countries and employ over 105,000 people.