Is there any way to get the relationship between displacement and time for laser displacement sensor

This should be very simple, we can make the sensor work through an external trigger, and we can get a very stable measurement frequency value, and the distance of the actual object can also be measured directly, and the time can be obtained according to the number of measured values, so the relationship curve between time and distance is also known. Another way is to change the data of the axis of the measured number to the time value directly on the display software interface, as long as it is a continuous measurement, you can get the relationship curve between displacement and time.

Our company has successfully applied this area, of course, because the customer needs us to adapt the software.

Measurement scheme: use 3 laser sensors, installed side by side, the angle between each other is 60 ° (equal to the laser point can be connected on the plane of the measured object to form an equilateral triangle), use 3 laser sensors to measure the distance to the plane, so as to know the relative tilt height of the plane h (that is, the distance of the measured point A minus the distance of point B, where the distance of the measured point B is the same as the distance of point C), the side length of the equilateral triangle is known, and one of the sides BC is parallel to the inclined edge, the distance from vertex A to hypotenuse BC can be calculated, and the tilt angle of the plane can be calculated by algorithm.

Technical parameters of laser detection optical level:

1. Sensor accuracy division value: high resolution, high linearity.

2. Maximum measuring range: 100mm

3. Indication error: all measurement ranges: . It can be customized for higher precision.

4. Planar deviation of working face: maximum deviation of 100mm6, working face (length and width); More than 200mm.

First, choose the right product line for your needs. For example, whether it is a single point measurement or a line scan measurement.

Secondly, select the appropriate specific model according to the required measurement accuracy and distance. Trigonometry laser displacement sensors have installation angle limitations, but laser coaxial sensors have no installation angle limitations, as long as the optical path is free of interference.

For example, the MD series laser coaxial displacement sensor of Zhizhiphoton can measure the maximum measurement distance of 2m, the minimum measurement accuracy can be reached, and the operation is simple without angle limitations.

Recommendation 1Laser displacement sensor.

Amplitude of vibration: Determines the range of laser displacement sensor you choose.

Accuracy: Basically inversely proportional to the range, the smaller the range, the higher the accuracy, and now the accuracy is one thousandth of the range).

Vibration velocity: Determine this value to determine how much of the sampling frequency you can use, and if you use 1kHz or 2kHz vibration, you can use eddy current.

Vibration direction: multi-directional vibration should be measured, it depends on how many directions you want to measure, this is easy to understand, one direction is installed.

The material of the shaft: in fact, it can also be understood as the color or appearance of the condition, whether there is oil, water and the like, if there is oil and water, the laser displacement sensor is not so suitable, you should choose the eddy current displacement sensor.

Diameter of the shaft: This is related to the size of the laser spot, if the diameter of the shaft is only a few millimeters, it is estimated that the eddy current is definitely not good, it depends on the spot size of the laser sensor.

Recommendation 2With high-precision eddy-current displacement sensor (unidirectional vibration).

If the shaft vibration is multidirectional.

If the shaft is a non-permeable material, the high-precision eddy-current displacement sensor can even be accurate in the nanometer range.

However, if the shaft is made of magnetic material.

It is best not to use eddy current, because the interference of remanence is not possible.

In short, it is very important to choose the right sensor according to the specific situation, otherwise this kind of work is very tiring, and it is not beautiful to work in vain if you use the wrong work for half a day. We now have a ZLDS100 that is used to measure the shaft vibration of the fan, 2mm amplitude, 2KHz, the resolution is quite high, the accuracy is 2 m, we have used it to measure the vibration of the fan shaft before doing vibration experiments, the measurement is a small blade, the waveform is very good. If the sampling frequency of 2kHz is not enough, it can still be used, RS232 has to be replaced with a 485 port, or directly 4-20mA current, 0-10V voltage output.