02-21-2018 01:39 AM
Hello ,
I have a distance sensor board utilizing inductive measurement principle. Inductance varies for different distances.
My board connects 4.8V to these sensor in a pulse manner and measures the time required for the sensor current to cross certain threshold value. I want to avoid the sensor and use a DAQ card if possible to simulate the sensor experience.
The sensor graph is like below,it shows the time required w.r.t to angle of deviation.
As i understand the current ramps up when the sensor is connected, the controller on board measures this current.So basically external DAQ channel should be able to sink the current supplied by the board , and the rate at which it is sinking i should be able to program.I need to simulate different sensor characteristics with different current waveforms.
typically i should be able to change current atleast in range of 10 us , 1us nice to have.
i.e if current range is 0-16mA, resolution may be 1mA, change time( delta time) from one set value of current to another set value should be 1us minimum.
Dont know if it makes sense... But any suggestion will be greatly appreciated. 🙂
Regards,
Stephen
02-21-2018 05:24 AM
How about a voltage controlled gyrator simulating the variable inductance?
Quick search show up this.