BLACK BOX FOR VEHICLE


Lot of the time drivers drive above limit or over heat the engines thus
decreasing the vehicles performance considerable. Moreover accidents occur due to
over speeding & are on rise especially amongst the youngsters so parents need to
keep a watch on them. Black box for vehicle does the same it checks if the vehicle
RPM is above limit & if so logs the RPM along with the time at which the speed limit
has been crossed & the number of time the vehicle was above the speed limit.
Moreover it checks the engine temperature & if the temperature is above limit a
buzzer is sounded. The device is then connected to the PC where the speed logs can
be seen.
Microcontroller (8951/8952) is the heart of the project, the controller gets the pulses
from the sensor & calculates the vehicle’s RPM. LM35 is used as temperature sensor,
the voltage o/p of the sensor is given to ADC, and the controller gets the reading from
the ADC. An EEPROM is used to store the logs as well as the RPM & temperature set
point. A RTC is used to keep the time so that the exact time of over speeding can also
be logged.MAX232 is used to communicate with the PC.