ikalogic
Member
Hello everybody...
I am now working in a brand new french company called FILMARIANE. We build GPS/GPRS tracking system for luxury cars.
One of the functionalities of the device we are building is to detect the distance traveled by the car. For that, we decided to plug our device on the speedsensor wire.
I have build a circuit that converts any oscillating signal, square or sinus shaped, to 5V pulses that is fed directly to our embedded electronics. I am hoping that this circuit would be compatible with any type of sensor that is mount in the different vehiculs on the market.
I have litle knoledge in the world of automobile industry, and i was hoping to know, if by an change you would know, if all (or almost all) speed sensors provide oscillating electrical signals. My doubt come from some posts on the net that says that some sensors output a voltage proportional to speed, Is that true?
If yes i would have to take that into consideration to make to device compatible with more cars on the market.
If It's not too much to ask, does all recent vehicle also have this VSS signal available somewhere, or do I have to get the information via a data bus (CAN, etc...)?
If this can help, i am talking about the VSS signal that TaxiMeters use to count displacement...
Thanks for giving any information![Smile :) :)](data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7)
I am now working in a brand new french company called FILMARIANE. We build GPS/GPRS tracking system for luxury cars.
One of the functionalities of the device we are building is to detect the distance traveled by the car. For that, we decided to plug our device on the speedsensor wire.
I have build a circuit that converts any oscillating signal, square or sinus shaped, to 5V pulses that is fed directly to our embedded electronics. I am hoping that this circuit would be compatible with any type of sensor that is mount in the different vehiculs on the market.
I have litle knoledge in the world of automobile industry, and i was hoping to know, if by an change you would know, if all (or almost all) speed sensors provide oscillating electrical signals. My doubt come from some posts on the net that says that some sensors output a voltage proportional to speed, Is that true?
If yes i would have to take that into consideration to make to device compatible with more cars on the market.
If It's not too much to ask, does all recent vehicle also have this VSS signal available somewhere, or do I have to get the information via a data bus (CAN, etc...)?
If this can help, i am talking about the VSS signal that TaxiMeters use to count displacement...
Thanks for giving any information
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