Please help analyze the function of this circuit

1173435506

Please help analyze the function of this circuit [Copy link]

Please help me analyze the function of this circuit.

maychang

There are no devices in the picture, just four potentiometers. We don’t know where they are connected to. How can we know what the “function” of this circuit is?

1173435506

COM1 is connected to the display instrument, and COM2/COM3/COM4/COM5 are each connected to a strain gauge weighing sensor.

1173435506

maychang posted on 2018-8-28 11:59 There are no components in the picture, just four potentiometers. I don’t know where they are connected. How can I know what the “function” of this circuit is?

COM1 is connected to the display instrument, and COM2/COM3/COM4/COM5 are each connected to a strain gauge load cell.

maychang

1173435506 Published on 2018-8-28 14:39 COM1 is connected to the display instrument, and COM2/COM3/COM4/COM5 are each connected to a strain gauge weighing sensor.

I didn't find COM1~COM5 in the figure, only CO1~CO5. If "COM1 is connected to the display instrument, and COM2/COM3/COM4/COM5 are each connected to a strain gauge weighing sensor" means "CO1 is connected to the display instrument, and CO2/CO3/CO4/CO5 are each connected to a strain gauge weighing sensor", it is suspected that the same strain structure (such as a strain beam or a weighing plate) has four strain bridges connected in parallel (the power supply ends of the four strain bridges are connected together, and the output ends are also connected together), so that the output of the two parallel output ends is the average of the weighing output. P1~P4 may be used to adjust the weight of the four strain bridges in the output.

1173435506

maychang posted on 2018-8-28 15:35 I didn't find COM1~COM5 in the picture, only CO1~CO5. If "COM1 is connected to the display instrument, COM2/COM3/COM4/COM5 are each connected to a strain gauge...

Thank you, it should be like this