raheel
Posts: 32
Joined: Tue Feb 26, 2013 2:08 pm

Reading tire pressure sensor RPi

Thu Jul 04, 2013 1:52 am

Hi,

I am planning to start a project to have my car tire's pressure read thru RPi. Actually my car doesn't have any tire pressure sensors fitted in (Prado 2007, 6 cylinder). I want to use my Pi to have the sensor values read-in thru it and display on some nice lcd display fitted on the dashboard. I need to understand that if someone has conceive this idea before or similar thing? What type of sensor should I buy to do this integration? Rest should not be that much difficult but first i need to have correct equipment with me.

do let me know if any other small components/circuit I would need?

Thanks.

User avatar
Tage
Posts: 287
Joined: Fri May 24, 2013 2:29 am
Location: St Thomas, Ontario Canada

Re: Reading tire pressure sensor RPi

Thu Jul 04, 2013 2:33 am

that is an interesting project. I will follow this and try to learn more. I know there are kits sold that contain pressure sensors which also can measure tire temperature, and system units that communicate with the sensors and display the data and give alerts. it would be great if one could just buy the sensors ($35 each) and build the rest of the system using a Pi.
good idea!

User avatar
aTao
Posts: 1093
Joined: Wed Dec 12, 2012 10:41 am
Location: Howlin Eigg

Re: Reading tire pressure sensor RPi

Thu Jul 04, 2013 5:04 am

I justb read http://www.motoringassist.com/motoring- ... ems-tpms-/
There are going to be some major problems...
If you use a ready made tyre pressure sensor then you will need to know the manufacturers ID coding system, probably an encryption method since a new sensor must be registered to the car (so it doesn't warn you of the flat tyre on the car next top you at the traffic lights).
If you build your own the power will be very difficult, the units mentioned on the web page have a battery life of 10 years. For an amateur to produce radio communication for that kind of battery life is unlikely.
>)))'><'(((<

raheel
Posts: 32
Joined: Tue Feb 26, 2013 2:08 pm

Re: Reading tire pressure sensor RPi

Thu Jul 04, 2013 1:00 pm

Thanks tag and aTao. Firstly, I need to understand that which pressure sensor do I need to buy which has necessary electronic integration enabled to read the psi values. Can someone please help me here?

btw, on googling, I came across this link: http://www.infineon.com/cms/en/product/ ... 00d8&tab=2

Any ideas?

mikerr
Posts: 2826
Joined: Thu Jan 12, 2012 12:46 pm
Location: UK
Contact: Website

Re: Reading tire pressure sensor RPi

Thu Jul 04, 2013 2:46 pm

There are two types I see

"professional" - which is installed inside the rims (by a garage)
http://www.steel-mate.co.uk/acatalog/Pr ... stems.html

"diy" - which just goes on the valve cap
http://www.steel-mate.co.uk/acatalog/TP ... tml#SID=30

Those are under £100

Of course you then have to hack the communication protocol somehow, all they mention is 433.92MHz

http://www.infineon-ecosystem.org/downl ... il&item=56
(infineon sell a SP37 Development RF Kit for 1800 Euro which is the easier, but expensive route)
Last edited by mikerr on Thu Jul 04, 2013 4:38 pm, edited 2 times in total.

User avatar
aTao
Posts: 1093
Joined: Wed Dec 12, 2012 10:41 am
Location: Howlin Eigg

Re: Reading tire pressure sensor RPi

Thu Jul 04, 2013 3:47 pm

raheel wrote:Thanks tag and aTao. Firstly, I need to understand that which pressure sensor do I need to buy which has necessary electronic integration enabled to read the psi values. Can someone please help me here?

btw, on googling, I came across this link: http://www.infineon.com/cms/en/product/ ... 00d8&tab=2

Any ideas?
Looks like your application-on-a-chip solution for your requirements.
I havnt looked at all the .pdfs there,k but they should be enough to get you up and running. One thing it looks like you are going to have to do is get used to or find out how to convert kPa to PSI.
>)))'><'(((<

yammiecat
Posts: 1
Joined: Sun Feb 05, 2017 2:04 pm

Re: Reading tire pressure sensor RPi

Sun Feb 05, 2017 2:09 pm

Did you checkup the Work of Jared Boone? He has the source code already written. Search Youtube for Technical explanations. Here is his source code. https://github.com/jboone/tpms

thenrie
Posts: 10
Joined: Mon Feb 19, 2018 1:04 am

Re: Reading tire pressure sensor RPi

Fri Oct 05, 2018 6:33 pm

433mhz is for European vehicles, 315mhz is used in the USA.

My problem is that most of these sensors seem to be limited to 85psi max. I am looking for sensors that max out above 110psi for G-rated tires. Also, it appears these sensors need to be programmed to be initiated. Can anybody shed some light on this, relative to the raspberrypi?

I'm trying to make a retrofit TPMS system for my 2005 Dodge Ram 3500 DRW (dually) and a horse trailer. I need to monitor 10 tires when the trailer is attached and 6 when it is not. While I now run E-rated tires (85psi max) I plan to move to G-rated tires on the trailer (110psi max). I want to integrate this into my truck computer project based on the Rpi3B.

Return to “Automation, sensing and robotics”