What are the classification types of displacement sensors?

Classification of displacement sensors: 1. According to the movement mode: 1. Linear displacement sensor: The function of linear displacement sensor is to convert linear mechanical displacement into electrical signal. In order to achieve this effect, the variable resistance slide rail is usually fixed at the fixed position of the sensor, and different resistance values are measured by the displacement of the slider on the slide rail. The sensor slide rail is connected to a stable DC voltage, allowing a small current of microamperes to pass through. The voltage between the slider and the starting end is proportional to the moving length of the slider. Using the sensor as a voltage divider can minimize the requirement for the accuracy of the total resistance of the slide rail, because the resistance change caused by temperature change will not affect the measurement results. 2. Angular displacement sensor: Angular displacement sensor is used to deal with obstacles: you can indirectly find obstacles by controlling your wheels with an angle sensor. The principle is simple: if the motor angle sensor works and the gear does not turn, it means that your machine is blocked by an obstacle. This technology is very simple to use and very effective; The only requirement is that the moving wheel can't slip on the floor (or slip too many times), otherwise you can't detect obstacles. This problem can be avoided by connecting an idler to the motor. This wheel is not driven by a motor, but by the movement of the device: if the idler wheel stops during the rotation of the driving wheel, it means that you have encountered an obstacle. Second, according to the material: 1, Hall-type displacement sensor: Its measuring principle is to keep the excitation current of Hall element (see semiconductor magnetic sensor) constant and make it move in a magnetic field with uniform gradient, then the displacement after movement is proportional to the output Hall potential. The greater the magnetic field gradient, the higher the sensitivity; The more uniform the gradient, the more linear the relationship between Hall potential and displacement. Figure 2 shows three kinds of magnetic systems that generate gradient magnetic fields: system A has a narrow linear range, and when the displacement Z=0, the Hall potential is ≠ 0; B system when z

Shenzhen Saideli Testing Equipment Co., Ltd. is a technical enterprise integrating production, research and development, with strong technical force, and the company's leading products are testing instruments; Electric tools; Shield machine, slicer and related imported mechanical parts; Laboratory equipment and instruments; Optoelectronic industrial test instruments; Sensors and instruments; Sensors include: pressure sensor, weighing sensor, torque sensor, temperature sensor, acceleration sensor and other types of sensors). Our company's BBP/BBT 375 displacement sensor adopts accurate linear bearing measurement, thus reducing the error influence on the displacement sensor, and making the displacement sensor have ultra-high repeatability of 0. 15 micron (0.0000006 inch). Convert mechanical displacement into measurable linear proportional electrical signal. When the measured object is displaced, the rope connected with it is pulled, and the rope drives the sensor transmission mechanism and the sensing element to rotate synchronously; When the displacement moves in the opposite direction, the spring slewing device inside the sensor will automatically retract the rope and keep its tension unchanged during the expansion and contraction of the rope.