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Tire Temperature System

Old 07-10-2014, 04:04 PM
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Tire Temperature System

Made this system (I'm an EE) for my car, and other HPDE guys I know. It's to know when your tires are up to operating temp. I thought I'd try and get some feedback here to see what people thought.

Here are the features of the kit:
  • Four IR sensors
  • Narrow 10deg sensor field of view for sampling tire sections
  • Large 1 1/12 by 2 1/2 inch display
  • Weather resistant; sensors can get wet without being ruined.
  • Removable lens cap if they need cleaning or replacement
  • Extra protective lenses
  • Does both fahrenheit and celsius
  • You can adjust the emissivity of each sensor (different materials reflect light at differing rates)
  • Quality harnesses
  • DC supply is designed for difficult automotive environments with large current dumps and voltage spikes

The installation is straight forward. You drill a small hole in the wheel arch for the sensor to poke through. Top center is best to account for changes in tire angle.

I'm aware 3 sensors per tire would be needed per corner to monitor camber load. But that's another kit--one with no display and CAN support for data-logging--and not this one, which is aimed at being sub $1k.

If anyone is interested just send me a PM or email me at mikes at ntisys.com

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Old 07-10-2014, 08:40 PM
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You can pull temp already via obd ... There's just no guarantee on order.

Regardless, very nice!
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Old 07-10-2014, 09:29 PM
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Tire temp through OBD? Maybe I'm missing something but how is that done?
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Old 07-10-2014, 09:30 PM
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Science.
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Old 07-11-2014, 06:52 AM
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It's on the can bus... Race car would need tpms
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Old 07-11-2014, 08:27 AM
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Originally Posted by rickeo View Post
Tire temp through OBD? Maybe I'm missing something but how is that done?
https://www.rx8club.com/showthread.php?t=250627

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Old 07-11-2014, 10:32 AM
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The original project where I reverse engineered the data on the S1 bus:

Paimon held out on me back then when he did it with his S2 experiment.


Last edited by ShellDude; 07-11-2014 at 10:40 AM.
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Old 07-11-2014, 11:02 AM
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That's pretty cool (the OP's device). When you say sub-1k, how far sub are we talking?

The TMPS thing is cool, but I'd want to know tread temperature, which this wouldn't give right?
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Old 07-11-2014, 12:06 PM
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Originally Posted by Loki View Post
That's pretty cool (the OP's device). When you say sub-1k, how far sub are we talking?

The TMPS thing is cool, but I'd want to know tread temperature, which this wouldn't give right?
Right, this gives tire tread surface temp. And over a narrow section of the tire (inside,outside or center) since it has a very narrow 10deg fov sensor. Whereas the OEM sensors give tire air temp I believe (?)

I cant publicly state cost since I'm in the process of partnering with a distributor that will set MSRP. If you're interested in one send me a PM or email and I'll get you one at just above cost.
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Old 07-11-2014, 01:37 PM
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Yup ... I'd classify the obd data as internal tire air temperature.

Your stuff is going far beyond that... I deal with hand grenades... This thread is laser guided.
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Old 07-11-2014, 05:48 PM
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OP, pretty sure vendor status is req'd here for commercial thread posting


Originally Posted by 9krpmrx8 View Post
Science.
Attached Thumbnails Tire Temperature System-stephen-hawking_508524_4462621.jpg  
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Old 07-12-2014, 10:04 AM
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Cool idea. I thought of prototyping something like this just for fun. I would do 3 sensors per wheel, though, and output via CANBUS so most loggers can read the data.
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