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GSM Based Vehicle Data Acquisition and Telemetry System

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ABSTRACT

• The project implemented a telemetry system capable of real time processing, analysis, and storage of data collected from the vehicle.

• The data is sampled using sensors and other hardware on board the car.

• It is then processed by switching and relay unit and wirelessly transmitted to a base-station.

• This information can also be used to make adjustments to the car ,such as to the fuel controller, engine performance, etc to alter its performance.

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INDRODUCTION

• Data Acquisition System (DAQ) and Telemetry is vital to the development of a vehicle.

• The designs can be validated and tuneable parameters adjusted to increase performance and efficiency.

• The system discussed in this paper was designed specifically for automotive application.

• That all the significant operation data are continuously transmitted via a wireless communication system to base station

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TRANSMITTING SIDE

24 V DC 230V/12VOVERSPEED

SENSOR

COLLISION SENSOR

TEMPERATURE SENSOR

SWITCHING&

RELAY UNIT

GSMMODULATOR

&DEMODULATOR

POWER SUPPLY

FUELSENSOR

ANTENNA

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TRANSMITTING SIDE

• There are four sensors in the transmission side• These sensors are connected to the switching and

relay unit .• The power supply is given to the sensors and relay

unit .• The switching and relay unit are connected to the

GSM modulator and demodulator • It will send the signal to the base station.

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RECEIVING SIDE

ANTENNA

DTMFDETECTOR

GSMMODULATOR

&DEMODULATOR

LED

POWER SUPPLY

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RECEIVING SIDE

• The GSM modulator and demodulator will received the signal and given to the DTMF detector .

• The power supply is given to the DTMF detector .• It will decode the signal & convert in to binary .• And gives the out put it is connected to the LED. • Now the LED will glow as per the input come from

the DTMF detector.

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OVER SPEED SENSOR

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OVER SPEED SENSOR

• A tachogenerator is used to sense the speed of the vehicle.

• The generator output is used to trigger the transmitter(BC547) .

• When the transmitter is ON the relay is energized and the signal is given to the GSM modulator.

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COLLISION DETECTOR

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COLLISION DETECTOR

• An inert gas tube is used to sense the accident occurred in the vehicle.

• Normally the circuit having a closed path, and 24v supply is there.

• So the coil is in energised position, so the switch is in normally open condition.

• When the supply is cut the coil is de-energised and the switch is in closed position.

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• At that time the second circuit is active and energise the relay coil and the second switch is in normally closed position, then a signal is send to the GSM modem.

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TEMPERATURE SENSOR

thermostat

thermostat

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TEMPERATURE SENSOR

• A thermostat is used to sense the temperature of the vehicle.

• The sensor output is used to energized the relay , then the switch in normally closed position and the signal is give to the GSM modulator.

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FUEL SENSOR

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FUEL SENSOR

• The main part of a fuel sensor is a mercury switch, and relay arrangement.

• When the level of fuel decreases the mercury will conduct and energise the relay coil, a signal is transmitted to the GSM modem.

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DTMF DETECTOR

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DTMF DETECTOR

• DTMF Decoder is used for receiving data from transmissions side.

• The decoder distinguishes the DTMF tones and produces the binary sequence equivalent to key pressed in a DTMF (Dual Tone Multi Frequency) keypad.

• The DTMF tone is a form of one way communication between the transmitter and the receiver .

• DTMF is the ultimate technique used in any of the Mobile communication systems.

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CIRCUIT DIAGRAM OF TRANSMITTINGSECTION

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OPERATION

• The Signals from the all sensors are given to the GSM modulator and the GSM modulator will transmit the signal.

• The Frequency of GSM modulator is depend up on the fault Signal from the Sensor.

• The transmitting section is fully implemented inside the vehicle.

• Here having sensors are collect the variation occur in the vehicle (temperature, speed, collision, fuel level).

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CIRCUIT DIAGRAM OF RECEIVING SECTION

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OPERATION

• The Receiver Receives Signal from the GSM Transmitter and provide the different frequency depend upon the faults.

• The DTMF Decoder decodes the different frequency in to binary codes.

• The output is the form of DC Voltage which is given to the LEDs. The Fault can be detected from the glow.

• In the vehicle we are setting a particular speed limit. When the limit is exceeded the sensor will send the signal.

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• When the engine temperature is going to exceeded above the normal temperature the sensor is sensed the signal.

• The fuel level is going down to a particular level, the level switch will operate and giving signal .

• When the vehicle become an accident then the inert gas tube is broken and the signal is send.

• These signal are receive in the base station and corresponding out put is given.

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ADVANTAGES

• It does not have any complicated circuit• Maintenances is very easy• Receiving section also a simple circuit• Power consumption is low • Over all cost is less

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CONCLUSION• In this project we can able to transmit the real time data

from the vehicle without any wires using. • Then successfully receives the signals and got the

corresponding outputs without any interruptions.• So that the system can easily fit in to other similar data

acquisition and telemetry applications.• In feature by using the system we can provide continuous

monitoring on the vehicle during motion and static conditions.

• Thus it improves the effectiveness of the system and also increases the safety margin.

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THANK YOU