MagnetoResistive Active Wheel Speed Sensor
Posted: Thu May 28, 2015 8:20 am
I am fitting the Dash 2 Pro to a motorcycle from which the ABS has been removed. Mechanically this is not a problem, but the front and rear WSS were each connected to the ABS ECU which then passed a speed signal for each to the main ECU to use the data for the Traction Control function. I don't particularly need TC, but if the main ECU doesn't see the right signals, it will likely run with engine power permanently cut.
Each WSS is a 2 wire active sensor with 12V supply (from ABS ECU) and the signal is read from the negative return. But this would only be less than 2V and undoubtedly be amplified to about 5V (relative to vehicle ground) before being passed on to the main ECU.
Whether or not the D2P could somehow read this low level WSS output, I need to create a suitable interface to amplify the signals in order to pass to the main ECU (and the D2P will be able to read that).
The circuitry for such an amplification device would I believe be quite simple, but could anyone provide any help with the design? I'm sure it's been done before. Any resources I could study? Or could anyone help with the actual design, from scratch?
Hopefully someone can help somehow.
Each WSS is a 2 wire active sensor with 12V supply (from ABS ECU) and the signal is read from the negative return. But this would only be less than 2V and undoubtedly be amplified to about 5V (relative to vehicle ground) before being passed on to the main ECU.
Whether or not the D2P could somehow read this low level WSS output, I need to create a suitable interface to amplify the signals in order to pass to the main ECU (and the D2P will be able to read that).
The circuitry for such an amplification device would I believe be quite simple, but could anyone provide any help with the design? I'm sure it's been done before. Any resources I could study? Or could anyone help with the actual design, from scratch?
Hopefully someone can help somehow.