HOW TEMPERATURE SENSOR WITH THE TRACKERS

1.Brief Introduction of temperature detect solution

   Real time Temperature detect solution is consist of 3 parts: temperature probe ,voltage protection box and tracker unit STT-310 and STT-600.

   Temperature probe get temperature info and send the info to tracker .And then the tracker will send the temperature info to server via GPRS .The GPRS package with temperature info is send in time interval of 30s.

   The voltage output of vehicle is not stable,which may cause temperature sensor over voltage. So we strongly suggest customer to use voltage protection box/ stabilizer. 

2, Wire connection

Step1. Connect the temperature with voltage protection box.

There are 3 cable on the temperature sensor, the red, the black and the green one.

The green cable is output of temperature info, which is analog data from 0V~5V.

The red cable is the input voltage of temperature sensor, which is 5~10V.

The thin black cable is the ground of temperature sensor.

Consideration the voltage in vehicle is not stable,we strongly recommend customer to use our voltage protection box to provide stable voltage supply to temperature sensor.

Following is connection:

Vehicle voltage VCC--------------Input  vcc

Vehicle voltage GND--------------Input GND

Output VCC------------------------temperature sensor Vcc in,which is red cable

Output GND------------------------temperature sensor GND,which is thin black cable

Step3. Connect the temperature sensor with tracker

Following is picture of connect3 of STT-310, STT-600

Following is connection method:

Blue cable of the temperature sensor--------analog input 1

4.The parallelism between temperature  level and output voltage

The output of temperature probe is analog signal between 0~5V.

The signal will be conversed to digital signal in tracker unit.

Following is the diagram which shows the relationship between the temperature info and the

digital info after conversion.

 4.
Example

5. Example

     After the tracker unit converse the temperature info to digital signal ,it will send the digital info via GPRS. Following is  GPRS package which include the temperature info:
GPRS package