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Hall Effect Sensor Output Doesn't Make Sense

Hey Everyone,

 

Not sure if this is the right spot for this post, so please point me in the right direction if it isn't. I'm trying to use a hall effect sensor to measure rotation, but currently, I'm just trying to get a voltage change in the presence of a magnetic. All I can see happening in LabVIEW is the voltage starting around 6 volts and just going down. I'm really not sure what's up.20230302_125436.jpg20230302_125450.jpg20230302_125457.jpg

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Please share exact circuit diagram of connection between DAQ and Hall effect senor.

Santhosh
Soliton Technologies

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Thanks for the quick reply. I've attached some images below, I'll try to explain each one.

songkang786_0-1677800672643.png

Here's a top view of everything. On the right is the sensor screwed in, and the cylinder across from it has a magnet taped to it. The rod rotates, so I was trying to see a voltage change when I rotate it.

 

songkang786_1-1677800743717.png

Side view of the circuit

 

 

songkang786_2-1677800881893.png

showing the connection between the daq and circuit

 

songkang786_3-1677800946000.png

I used this circuit as a base for what I did with the sensor, I used this in a lab a few months back. In my case, Rt is the sensor, there is no ai0, just a single ai1 from the output.

 

What led me to this point is before I just had power, ground, and input connected to the sensor with nothing else. In that case, it would start at 2 and just decrease. This circuit was me trying to fix that

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