Motion Detector
From Ece
AIM
To detect the motion of objects with SONAR using FPGA as an interface.
Contents |
Team Members
Sudhir Koduri - Coordinator
Dheeraj Segapalli - Recorder
Mandeep Kaur - Checker
Phase 1
Introduction
Concept
Sonar is a technique that uses sound propagation to detect the distance of an object.It transmits an ultrasonic PING when instructed by the program and returns a signal when it recieves an echo.The distance is determined by timing the interval between the signals.
Proposed Work
1.SONAR(SFR05)is used to transmit the signal and to receive the echo signal.
2.A short 10uS pulse is used to the trigger input to the start the ranging.
3.SONAR(SFR05) will be confugured to the Spartan3 Board using connecting wires.
4.The distance can be calculated by timing the pulse whose width is proportional to the distance of the object.
5.The OUTPUT is to be displayed on the Spartan3 board.
Requirements
1.Sonar - SFRO5
2.Spartan3 Board
3.External Power Supply
4.Connecting Wires
Expected Deliverables
With the help of all the above listed components, we would be able to detect the motion of the object.
Phase 2
Introduction
Concept
Sonar is a technique that uses sound propagation to detect the distance of an object.It transmits an ultrasonic PING when instructed by the program and returns a signal when it recieves an echo.The distance is determined by timing the interval between the signals.
Proposed Work
1.SONAR(SFR05)is used to transmit the signal and to receive the echo signal.
2.A short 10uS pulse is used to the trigger input to the start the ranging.
3.SONAR(SFR05) will be confugured to the Spartan3 Board using connecting wires.
4.The distance can be calculated by timing the pulse whose width is proportional to the distance of the object.
5.The OUTPUT is to be displayed on the Spartan3 board.
MODULES
Schematic was developed using counter that generates pulses with a time peroid of 10us. The Module has an segdecoder,counters and external switch was given as a chip enable to the start and stop the pulse counting.An internal clock is given to the counter to generate the pulses but we used more counters to get the time period to 10us, as our kit operates at that time period.
The waveform of the signal is shown here:
Requirements
1.Sonar - SFRO5
2.Spartan3 Board
3.External Power Supply
4.Connecting Wires
Expected Deliverables
With the help of all the above listed components, we would be able to detect the motion of the object.
Phase 3
Introduction
Concept
Sonar is a technique that uses sound propagation to detect the distance of an object.It transmits an ultrasonic PING when instructed by the program and returns a signal when it recieves an echo.The distance is determined by timing the interval between the signals.
Proposed Work
1.SONAR(SFR05)is used to transmit the signal and to receive the echo signal.
2.A short 10uS pulse is used to the trigger input to the start the ranging.
3.SONAR(SFR05) will be confugured to the Spartan3 Board using connecting wires.
4.The distance can be calculated by timing the pulse whose width is proportional to the distance of the object.
5.The OUTPUT is to be displayed on the Spartan3 board.
MODULES Description
Schematic was developed using counter that generates pulses with a time peroid of 10us. The Module has an segdecoder,counters and external switch was given as a chip enable to the start and stop the pulse counting.An internal clock is given to the counter to generate the pulses but we used more counters to get the time period to 10us, as our kit operates at that time period.
We are working on the kit to get a clock signal as a output from the board.We need to get a square signal of 10us for our sensor to operate.We reconfigured the constraints file (DIGI FILE) such a way that I/O ports are used to give the clock signal to the kit. The port should also be able to recieve the echo signal transmitted by the kit,so we need to assign one port as input port and one as output.Right now, we are working on this module.
The waveform of the signal is shown here:
Requirements
PHASE 4
Introduction
Concept
Sonar is a technique that uses sound propagation to detect the distance of an object.It transmits an ultrasonic PING when instructed by the program and returns a signal when it recieves an echo.The distance is determined by timing the interval between the signals.
Proposed Work
1.SONAR(SFR05)is used to transmit the signal and to receive the echo signal.
2.A short 10uS pulse is used to the trigger input to the start the ranging.
3.SONAR(SFR05) will be confugured to the Spartan3 Board using connecting wires.
4.The distance can be calculated by timing the pulse whose width is proportional to the distance of the object.
5.The OUTPUT is to be displayed on the Spartan3 board.
Requirements
1.Sonar - SFRO5
2.Spartan3 Board
3.External Power Supply
4.Connecting Wires
Review of Work
We can detect the motion of the object by the rate at which the LEDs and SSG change. The switch in the Spartan board is used to enable the sensor and control it.When the sensor is enabled it sends the signal to the object and recieves the echo signal and this can be identified on the Spartan board.If the object is in motion then there would be corresponding change in the recieved echo signal which can be seen in the Spartan board.
The waveform of the signal is shown here:
Last minute changes
Due to large vulnerability of Sensors to noise we cannot measure the distance accurately but the position of the object with regard to sensor can be detected within its specified range.
Top Level Schematic
The schematic of the project is shown here
Interfacing Diagram
The entire diagram with sensor interfaced to the spartan board.
Spartan board counting the pulses and also the led's change as the distance of the object changes.It can be observed here.
OUPUT WAVEFORM
the output waveform can be observed on the oscilloscope
