The scale isn’t accurate; what should I do?
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The weighing is inaccurate; what should I do? Please see the image below and offer some advice, experts.
If the measurement is inaccurate, it must be recalibrated; if the linearity is poor, then a new sensor has to be used
None of the four sensors work, or is it just one of them that doesn’t work? You can try having people step on the four corners. Check around to see if there are any areas that might have been touched or that could easily get caught, and whether there are any small stones or similar objects stuck there. If the four corners are not level, shims can be used to adjust them. Finally, considering replacing the sensor or control board might be an option.
If the scale is not accurate, it can only be calibrated, or the sensor needs to be replaced; in principle, the four sensors should be on the same plane
What you drew is called a junction box. +EXC (positive excitation) + SEN (positive feedback) + SIG (positive signal) – EXC (negative excitation) – SEN (negative feedback) – SIG (negative signal). SHLD refers to the shield ground. In a 5-wire setup, positive excitation and positive feedback need to be shorted together, as do negative excitation and negative feedback. There are many reasons for drift: it could be due to an unconnected shield (or a broken shield), or it might be caused by a faulty sensor; to diagnose the issue, it’s necessary to measure the internal resistance of the sensor, with the resistance value provided by the manufacturer. It seems that adjusting an automatic reset parameter could resolve this problem; if the drift is minor, it can be ignored. Sensor fault detection is generally carried out using voltage measurement and resistance measurement methods. Voltage measurement involves checking the voltage between +EXC and -EXC (which is around 5V), as well as the millivolt signal between +SIG and -SIG (which is below 10mV). The internal resistance value should be obtained from the manufacturer, as there are many different manufacturers of such modules, and their values vary.
The 7th floor is the correct answer; measure the signal for each terminal. Those with a large difference from the others (a difference of over 20%) are more likely to be faulty. The voltage at the exc terminal depends on the meter being used, as different manufacturers’ meters have different voltages. Be sure to disconnect the connection when measuring the sig voltage, otherwise the readings will not be accurate.
Whether there is no load or a load present, this value fluctuates by around 0.7; in my opinion, calibration does not solve the problem.
No vibration, interference? I don’t know exactly which aspects you are referring to