VR sensor reading question?
bennettdan
Posts: 614
Hello,
Has anyone had any experience with Variable Reluctance sensors like the ones used to sense the teeth on a gear?
The specs I have on my sensor is that its a Sine Wave that outputs to around 100v but only ma currentwith that being known I would think that a zero cross would be the right way to count the pulses from the sensor.
I did a search on some VR sensor interface ICs and I did find one from Linear called the LM1815.
http://www.national.com/mpf/LM/LM1815.html#Overview
Anyone have any other suggestions?
Has anyone had any experience with Variable Reluctance sensors like the ones used to sense the teeth on a gear?
The specs I have on my sensor is that its a Sine Wave that outputs to around 100v but only ma currentwith that being known I would think that a zero cross would be the right way to count the pulses from the sensor.
I did a search on some VR sensor interface ICs and I did find one from Linear called the LM1815.
http://www.national.com/mpf/LM/LM1815.html#Overview
Anyone have any other suggestions?
Comments
The voltage is suppose to be about 1v p-p at slow speeds and around 100v p-p at full speed but I have not put my volt meter on this to confirm it. The LM1815 can handle 120v p-p input voltages so I would not say the info I have is incorrect but I plan to built me a test rig of some type maybe a drill to see if I can test the voltages the gap between the gear and sensor has to be real close so i dont think I can just hold it in my hand.