December 11, 2011

OBD2 Datalogger


For less than RM400 this tiny OBD2 "black box" (35mm x 48mm x 25mm) can record/monitor simultaneously four out of 23 available parameters - e.g engine load, temperature, battery voltage, speed...etc

The stand alone OBD2 Datalogger can log car speed once every second and other data every 5, 10, 20, 30 or 60 seconds intervals as well for up to 300 hours of normal driving. When it’s full, it writes over the oldest data.

It has mini USB port and comes with a cable for connection to a PC and software. The software summarizes each trip with data on time, speed and distance.

One of interesting features is that after a trip, the application will not only show a summary of the drive but can display a line graph of speed and indicate where there was hard acceleration and braking. These are indications that someone has been driving in a potentially unsafe manner, such as with jack-rabbit starts and stops. Unfortunately it can’t show if the seat belts were not used.

The data-logger also watches the car’s operations and shows error codes if exist when it is connected to a pc. In the event of an accident it can grab the data for the last 20 seconds of the car’s operation, letting you prove your speed and whether you slammed on the brakes or otherwise.

Some of the Parameters Available for recording

Vehicle SpeedRange: 0 to 255 km/h
Resolution: 1 km/h
Trip Distance TraveledRange: 0 to 16,000 km
Resolution: 0.1 km
Acceleration / Deceleration ThresholdRange: 0 to 3 G (0 to 30 m/sec2)
Resolution: 0.03 G (0.3 m/sec2)
Engine SpeedRange: 0 to 16,384 rpm
Resolution: 1 rpm
Throttle PositionRange: 0 to 100%
Resolution: 0.1%
Coolant TemperatureRange: -40C to 215C
Resolution: 1.0C
Engine LoadRange: 0 to 100%
Resolution: 0.1%
Air Flow RateRange: 0 to 655.35 gm/sec
Resolution: 0.01 gm/sec
Intake Air TemperatureRange: -40C to 215C
Resolution: 1.0C
Intake Manifold PressureRange: 0 to 255 kPaA
Resolution: 1 kPaA
Fuel PressureRange: 0 to 110 psi
Resolution: 0.5 psi
O2 Sensor Voltage
(up to 8 Monitored)
Range: 0 to 1.275 Volts
Resolution: 0.005 Volts
Ignition Timing AdvanceRange: -64° to 63.5°
Resolution: 0.5°
Short Term Fuel Trim
(Up to 2 Monitored)
Range: -100% to 99.22%
Resolution: 0.8%
Long Term Fuel Trim
(Up to 2 Monitored)
Range: -100% to 99.22%
Resolution: 0.8%
Battery VoltageRange: 6 to 16 Volts DC
Resolution: 0.01 Volts DC


EXAMPLEs

Coolant temperature


Air intake temperature


Speeds


RPM

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