Can bus air temp sensors.

[steve-V8s]

I want to use CanBus sensors to measure the inlet air temperature on my race car. Can anybody suggest a suitable sensor from a mainstream road car which I can buy as a spare part. What I am after is a four wire can connection. That is supply, 0v Can H and Can L. Ideally it would also be good to know the can address or how to configure the address. Ideally I would like to measure the temperature in three places using the same Can bus so sensors with a configurable or different addresses would be good.

thanks

[Scuffers]

Not sure such a sender exists?

You can get CAN interface modules for analog sensors, but they tend to be device specific etc.

[stevieturbo]

steve-V8s said:

I want to use CanBus sensors to measure the inlet air temperature on my race car. Can anybody suggest a suitable sensor from a mainstream road car which I can buy as a spare part. What I am after is a four wire can connection. That is supply, 0v Can H and Can L. Ideally it would also be good to know the can address or how to configure the address. Ideally I would like to measure the temperature in three places using the same Can bus so sensors with a configurable or different addresses would be good.

thanks

As scuffers says, what you seek really doesnt exist.

Almost all engine sensors are resistance/voltage/frequency based, which in turn the ecu will use and perhaps combine into a CAN stream for interrogation by other devices in the system.

If you are looking for some sort of additional sensor monitoring and logging, you'll need either an ecu capable of adding stuff too, or look at some form of external logger.

What sort of temperature range are you expecting ? Innovate offer various products for logging.

[steve-V8s]

I guess from around 0c – 100c would be the range. I know there are plenty of sensors which vary resistance related to temperature. The current ECU I have uses that type and will happily log analogue values from additional sensors. What I was hoping do was connect several sensors in the inlet path for each bank of cylinders and read the data from them all on one CanBus by addressing them individually.

As I have encounterd CanBus parking sensors, light controllers etc. I assumed most things would now be sending data that way.

[stevieturbo]

steve-V8s said:

I guess from around 0c – 100c would be the range. I know there are plenty of sensors which vary resistance related to temperature. The current ECU I have uses that type and will happily log analogue values from additional sensors. What I was hoping do was connect several sensors in the inlet path for each bank of cylinders and read the data from them all on one CanBus by addressing them individually.

As I have encounterd CanBus parking sensors, light controllers etc. I assumed most things would now be sending data that way.

Ive never heard of any.

You could use some of Innovate's logger products and connect a few sensors to this, and this in turn offers a serial data stream. But obviously you need something to decode this datastream, or just use Logworks.

What ecu are you using, and does it not have enough spare inputs to do the job ?

eg

http://www.innovatemotorsports.com/products/pl1.ph...

http://www.innovatemotorsports.com/products/dl_32....

or more aimed at higher temps via a thermocouple ( or potentially 4 per unit in this case )
Not sure how accurate a thermocouple is deemed in the 0-0100deg range though, and the actual thermocouple's arent always that cheap.

http://www.innovatemotorsports.com/products/tc_4.p...

[Scuffers]

the AIM equivalent is these:



http://www.aim-sportline.com/eng/products-car/chan...
and
http://www.aim-sportline.com/eng/products-car/tc-h...

they basically take 4 analogue/thermocouple channels and put them out on CAN