Analysis of the specific causes of data jitter in displacement sensors
There are many types of displacement sensors, such as linear displacement sensors, slider displacement sensors, magnetostrictive displacement sensors, and laser displacement sensors. The most widely used one is the linear displacement sensor. The sensor we use is often beaten when the data is generated, which is mainly caused by the following reasons.
First of all, this situation will require checking that the insulation of the cable is not damaged, and that the machine with the housing is in constant contact and causes a short circuit. Secondly, the installation of a linear displacement sensor for neutrality is very good, but the degree of parallelism allows for an error of +0.5 mm, and the angle can allow ±12 degrees of error. However, if the parallelism error and the angle error are too large, the amount of jitter will be displayed. Therefore, in such a case, it is necessary to adjust the degree of parallelism and angle. Again, the three lines of the linear displacement sensor cannot be faulty and the power and output lines cannot be replaced.
If the above line is wrong, there will be a lot of linearity errors, which is difficult to control, the accuracy of the control will become very poor, and the phenomenon of prone to jumping will be displayed. There is a frequency disturbance and electrostatic interference that makes it possible to make a digital displacement sensor with a digital display of the number. Therefore, the power line and signal line of the electronic scale device are separate wire slots. The electronic ruler must be grounded.
The signal line needs to use a shielded wire, and the electrical box part should be grounded to the shielded wire. If there is a high frequency interference time, usually the normal general voltage measurement will be displayed, but the number of displays is beating; and the presence of static interference also has the same frequency interference. To prove that it is stationary, use only one power cord to short the electronic scale on some metal sealing screws. It can be used as soon as a short circuit will immediately eliminate static interference. However, if it is difficult to eliminate the high-frequency interference, the above method can be used. Try to suspend the high-frequency interference source and see the result better to determine whether there is a problem of high-frequency interference.
It is very helpful to understand the reason for the data of the displacement sensor's jitter. We usually encounter this situation without knowing what the reason is. On the contrary, we can take corresponding measures to deal with it. Using the displacement sensor, we are better.