3G spy bot

Robotics is an interesting field where every engineer can showcase his creative and technical skills. Pleasing aspect of robotics is that a robot can be made indigenously by any one. In this competitive world there is need for every enthusiastic, from amateur to professional, to make a simple robot having innovated applications and with robust control.

Mobile phones today became an essential entity for one and all and so, for any mobile based application there is great reception. Wireless controlled robots utilize RF circuits, which had limitations like limited range, limited frequency ranges and controls. But a mobile phone controlled robot can hold up these limitations. It has a robust control, unlimited range (coverage area of the service provider), no fear of interfering with other controllers and we can have as much as 12 controls.

NOW WHAT IS THIS SPYBOT??

The SPYBOT is a robot that can be controlled from anywhere around the world. Just by using a 3G enabled mobile phone, the user can control the robot

from anywhere in the world also can see live video transmission from the robot to the controlling mobile.

SO HOW THIS THING WORKS??

The user in order to control the robot should make a video call to the 3G enabled phone attached in the robot, from any another 3G enabled phone, which can send DTMF tones by pressing the numeric buttons and can view the video output. The cell phone in the robot will be kept in auto answer mode. So, after a ring the cell phone accepts the call and starts video transmission. To prevent unauthorized access, a password is set so that the person who knows the password can only access it. Now for the DTMF tones pressed, the tones are fed to the circuit and the corresponding actions are performed.

The invention concerns a method of controlling an electronic device (5) using a wireless mobile device (1) having a display (3), and video capturing unit (4), the method comprising successive steps of: establishing a video call between said mobile device and a remote server (6) such that said remote server receives video images captured by said mobile device; performing image recognition to identify an electronic device in said captured video; detecting motion of said video capturing unit; and transmitting a control signal to said electronic device based on the motion of the video capturing unit.

Signal processing is a very important and broad area in relation to control.

Analysis of systems and signals, detection and estimation of signals are some of the applications of signal processing and are used in the fields of sonar, radar and communications to name a few.The aim of this project is to design a robot capable of being controlled remotely using keypad tones from a mobile phone as shown in Figure 1.Video calling, a 3G based technology, will provide the visual feedback in relation to the robots movements.

This video feedback will allow the operator to view the robots movements in real time.The idea for this project was developed from an interest in the tones produced from a standard telephone’s keypad.These tones known as ‘DTMF tones’ are used for more than just dialling and connecting phone calls.

The technology is used in many different consumer based services to date, including credit card booking lines, automated information services and prepaid phone top up services to name a few.

From an engineering perspective, the technology gives the ability to control machinery from a considerable distance which can prove extremely useful, with DTMF signalling also being a very cost effective method of control.

Claims:

1. A method of controlling an electronic device (5) using a wireless mobile device (1) having a display (3), and video capturing unit (4), the method comprising successive steps of:establishing a video call between said mobile device and a remote server (6) such that said remote server receives video images captured by said mobile device;performing image recognition to identify an electronic device in said captured video;detecting motion of said video capturing unit; andtransmitting a control signal to said electronic device based on the motion of the video capturing unit.

2. The method of any preceding claim, further comprising, before said step of sending a control signal, establishing a connection between the remote server and the electronic device.

3. The method of any preceding claim, comprising, before said motion detection step, transmitting to said mobile device information indicating the commands of said device corresponding to motions of said video capturing unit.

4. The method of any preceding claim, wherein performing image recognition comprises accessing an object database (15) comprising a plurality of object images and/or signatures and matching features of said video images with said object images and/or signatures.

5. The method of any preceding claim, wherein said control signal is transmitted via the Internet.

6. The method of any preceding claim, wherein said motion comprises rotation of the video capturing unit.

7. Use of a wireless mobile device (1) for controlling an electronic device (4), wherein said mobile device comprises a video capturing unit, the use comprising:using said mobile device to establish a video call between the mobile device and a remote server (6);pointing said video capturing unit at the electronic device; andmoving the video capturing unit such that the electronic device moves in the field of view of the video capturing unit to control, based on the movement, the electronic device.

8. A system for controlling an electronic device (5), comprising:a wireless mobile device (1) comprising a video capturing unit (4) arranged to capture video images; anda server (6) capable of communicating with said mobile device in a video call and of receiving said video images, said server comprising:an image recognition unit arranged to identify an electronic device in one or more of said video images;a motion detection unit arranged to detect motion of the video capturing unit; anda control unit arranged to transmit a control signal to said electronic device (5) based on said motion of video capturing unit.

3G Technology - What Is 3G?

3G is the third generation of wireless technologies. It comes with enhancements over previous wireless technologies, like high-speed transmission, advanced multimedia access and global roaming. 3G is mostly used with mobile phones and handsets as a means to connect the phone to the Internet or other IP networks in order to make voice and video calls, to download and upload data and to surf the net.

How is 3G Better? :

3G has the following enhancements over 2.5G and previous networks: Several times higher data speed;

Enhanced audio and video streaming;

Video-conferencing support;

Web and WAP browsing at higher speeds;

IPTV (TV through the Internet) support.

Several times higher data speed;

Enhanced audio and video streaming;

Video-conferencing support;

Web and WAP browsing at higher speeds;

IPTV (TV through the Internet) support.

3G Technical Specifications :

The transfer rate for 3G networks is between 128 and 144 kbps (kilobits per second) for devices that are moving fast and 384 kbps for slow ones(like for pedestrians). For fixed wireless LANs, the speed goes beyond 2 Mbps.

3G is a set of technologies and standards that include W-CDMA, WLAN and cellular radio, among others.

3G follows a pattern of G's that started in the early 1990's by the ITU. The pattern is actually a wireless initiative called the IMT-2000 (International Mobile Communications 2000). 3G therefore comes just after 2G and 2.5G, the second generation technologies. 2G technologies include, among others, the Global System for Mobile (GSM) - the famous mobile phone technology we use today. 2.5G brings standards that are midway between 2G and 3G, including the General Packet Radio Service (GPRS), Enhanced Data rates for GSM Evolution (EDGE), Universal Mobile Telecommunications System (UMTS) etc.

What is Required for Using 3G?:

The first thing you require is a device (e.g. a mobile phone) that is 3G compatible. This is where the name 3G phone comes from - a phone that has

3G functionality; nothing to do with the number of cameras or the memory it has. An example is the iPhone 3G.

3G phones commonly have two cameras since the technology allows the user to have video calls, for which a user-facing camera is required for capturing him/her.

Unlike with Wi-Fi which you can get for free in hotspots, you need to be subscribed to a service provider to get 3G network connectivity. We often call this kind of service a data plan or network plan.

Your device is connected to the 3G network through its SIM card (in the case of a mobile phone) or its 3G data card (which can be of different types: USB, PCMCIA etc.), which are both generally provided/sold by the service provider. Through that, you get connected to the Internet whenever you are within a 3G network. Even if you are not in one, you can still use 2G or 2.5G services provided by the service provider.

What Does 3G Cost?:

3G is not very cheap, but it is worthwhile for users that need connectivity on the move. Some providers offer it within a somewhat costly package, but most of them have plans where the user pays for the amount of data transferred. This is because the technology is packet-based. For example, there are service plans where there is a flat rate for the first Gigabyte of data transferred, and a per minute cost for each additional Megabyte.

3G and Voice:

Wireless technologies are a way for mobile users to make free or cheap calls worldwide and save a lot of money due to the latest telephony applications and services. 3G networks have the advantage of being available on the move, unlike Wi-Fi, which is limited to a few meters around the emitting router. So, a user with a 3G phone and a 3G data plan is well-equipped for making free mobile calls. She will only have to download one of the free applications and

install on her mobile phone and start making calls. Here are examples of mobile VoIP services.

General Block Diagram

Project block Diagram

From user Side

Video call camera

Video call camera

User can see the live video from

robot side on his mobile Sreen From robot side

Viewing Screen

1 2 3

4 5 6

7 8 9

* 0 #

Viewing Screen

321

6

9

5

8

4

7

* 0 #

EP Pin

Amplifier IC lm386 DTMF Decoder IC 8870

Controller Power Supply clock reset

LCD 16x2Dsplay

RLY driver IC

ULN 2803

RLY bank 12v spdt

Motor

Motor

12

Gas Sensor

Temp. Sensor

A DTMF TELEPHONE KEYPAD

The contemporary keypad is laid out in a 3×4 grid, although the original DTMF keypad had an additional column for four now-defunct menu selector keys. When used to dial a telephone number, pressing a single key will produce a pitch consisting of two simultaneous pure tone sinusoidal frequencies. The row in which the key appears determines the low frequency, and the column determines the high frequency. For example, pressing the '1' key will result in a sound composed of both a 697 and a 1209 hertz (Hz) tone. The original keypads had levers inside, so each button activated two contacts. The multiple tones are the reason for calling the system multifrequency. These tones are then decoded by the switching center to determine which key was pressed.

DTMF KEYPAD FREQUENCIES

1209 Hz 1336 Hz 1477 Hz 1633 Hz

697 Hz 1 2 3 A

770 Hz 4 5 6 B

852 Hz 7 8 9 C

941 Hz * 0 # D

Tones #, *, A, B, C, and D

The engineers had envisioned phones being used to access computers, and surveyed a number of companies to see what they would need for this role. This led to the addition of the number sign (#, sometimes called 'octothorpe' in this context) and asterisk or "star" (*) keys as well as a group of keys for menu selection: A, B, C and D. In the end, the lettered keys were dropped from most phones, and it was many years before these keys became widely used for

vertical service codes such as *67 in the United States and Canada to suppress caller ID.

Mobile controlled Robot

The complete list of bill of materials is provided below along with the circuitry

with a little explanation of how the complete circuit works.

Bill of Materials:

MT8870 dtmf decoder ic

100k resitor 2pc.

300k resistor 1pc.

3.57945Mhz crystal oscillator

0.1 uf capacitor 2pc.

4 LED

connecting wires....

Working: while the input from the mobile using a headphone is connected

b/w the 0.1uf capacitor and the ground, DTMF tones can be transferred to the

decoder ic(8870) and once the ic is powered up the o/p can be seen by

connecting LED's at Q!, Q2, Q3 and Q4 o/p of the decoder ic.

The output on the Q1 to Q4 pins of the decoder IC has been shown in the

image.

the o/p of the decoder ic then can be connected to a motor driver ic like(L298

or L293D) to drive some motors or relays as a switch to operate some devices

remotely as the Mobile phone connected can be called from anywhere in the

world and by pressing the keys the DTMF tones can be transmitted to the

receiving end mobile and hence any device connected can be operated

globally.

APLLICATIONS

1) Scientific

Remote control vehicles have various scientific uses including hazardous environments, working in the deep ocean , and space exploration. The majority of the probes to the other planets in our solar system have been remote control vehicles, although some of the more recent ones were partially autonomous. The sophistication of these devices has fueled greater debate on the need for manned spaceflight and exploration.

2)Military and Law Enforcement

 Military usage of remotely controlled military vehicles dates back to the first half of 20th century. Soviet Red Army used remotely controlled Teletanks during 1930s in the Winter War and early stage of World War II.

3) Search and Rescue

 UAVs will likely play an increased role in search and rescue in the United States. This was demonstrated by the successful use of UAVs during the 2008 hurricanes that struck Louisiana and Texas.

 

 4)Recreation and Hobby

  See Radio-controlled model. Small scale remote control vehicles have long been popular among hobbyists. These remote controlled vehicles span a wide range in terms of price and sophistication. There are many types of radio controlled vehicles. These include on-road cars, off-road trucks, boats, airplanes, and even helicopters. The "robots" now popular in television shows such as Robot Wars, are a recent extension of this hobby (these vehicles do not meet the classical definition of a robot; they are remotely controlled by a human).

Benefits

Checking the location area. Moving on to the place.

Communicating with other people there.

Controlling from anywhere around the world.

Easy and fast communication.