Temperature sensor
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andrewjenkins34
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Re: Temperature sensor
Happy New Year. I have a BMW 13627580635 temp sensor that is used on the hybrid gearbox. I followed the steps outlined as best as I could. I'd like to be able to use this sensor in place of the MG2 temp sensor on the Zombieverter and Prius Gen 3 boards but I'm not sure how to do that.
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BMW Temp Sensor.ods- (42.52 KiB) Downloaded 218 times
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manny
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Re: Temperature sensor
I have the same 47k ntc in the XC90 inverter but no luck.
selected the NTC45/2k2 and changed the pcb to match the schematic above.
rigged up a pot to simulate de temperature sensor two options in the spot values -50 or +150.
measured the voltage on the stm32 and it matched the values in the temp_sensors.ods
did something change in the last 2-3 years?
selected the NTC45/2k2 and changed the pcb to match the schematic above.
rigged up a pot to simulate de temperature sensor two options in the spot values -50 or +150.
measured the voltage on the stm32 and it matched the values in the temp_sensors.ods
did something change in the last 2-3 years?
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manny
- Posts: 60
- Joined: Sun Jan 23, 2022 4:15 pm
- Location: Netherlands
- Has thanked: 12 times
- Been thanked: 46 times
Re: Temperature sensor
Have looked through the code for the temperature sensors. I think the NTCK45 and the PT1000 are "labeled" wrong in the "static const TEMP_SENSOR sensors[]"
The "coeff" for the NTCK45 is NTC. This seems logical but this is wrong in my opinion.
with the other sensors if the ADC values are increasing in the temp_meas.h they are listed as NTC. if the ADC values are decreasing they are listed as PTC.
the temperature sensor circuit for the motor_temp and the inveter_temp work in opposite way. in the iverter_temp the sensor is a pulldown and in the motor_temp the sensor is a pullup.
the NTCK45 and the PT1000 have the same response, -50 or +150 degrees
The "coeff" for the NTCK45 is NTC. This seems logical but this is wrong in my opinion.
with the other sensors if the ADC values are increasing in the temp_meas.h they are listed as NTC. if the ADC values are decreasing they are listed as PTC.
the temperature sensor circuit for the motor_temp and the inveter_temp work in opposite way. in the iverter_temp the sensor is a pulldown and in the motor_temp the sensor is a pullup.
the NTCK45 and the PT1000 have the same response, -50 or +150 degrees