Linear displacement sensor and control method

Abstract

The invention belongs to the technical field of sensors, and particularly relates to a linear displacement sensor and a control method. The linear displacement sensor comprises a centralized control module, a power module, a signal transmitting module, a signal receiving and processing module, a sliding block, a setting and outputting module and a signal indicator light. The centralized control module is electrically connected with the signal transmitting module, the signal receiving and processing module, the setting and outputting module and the signal indicator light. The power module is electrically connected with the centralized control module, the signal transmitting module, the signal receiving and processing module and the setting and outputting module. The sliding block is physically connected with the signal transmitting module. The centralized control module controls the signal transmitting module to transmit excitation signals regularly, and the sliding block moves and generates magnetic field induction with the signal transmitting module so that periodic signals can be generated. According to the linear displacement sensor and the control method, the running and processing speed, reliability and output accuracy are high.

Description

technical field [0001] The invention belongs to the technical field of sensors, and in particular relates to a linear displacement sensor and a control method. Background technique [0002] With the development of electronic technology, the requirements for precision control in the production process in the industrial application field have been continuously improved, which has led to the rapid development of linear displacement sensors. Because the linear displacement sensor not only makes it easier to optimize the production process and ensure the production quality, but also reduces the production cost and failure rate. More and more users prefer to use linear displacement sensor to output analog quantity to control and detect product displacement. The linear displacement sensor in the prior art mainly uses the working principle of the inductive coil to convert the linear mechanical displacement into an electrical signal. The resistance value, the slide rail is connecte...

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Problems solved by technology

[0003] 1. The main control chip of the main control circuit module connected by the variable resistor is a traditional 51 single-chip microcomputer. In view of the current product's requirements for displacement measurement accuracy, the operation stability of the main control circuit module is relatively high in the process of processing high-speed data acquisition. Poor, the running processing speed is low, so the reliability of the output signal is poor

[0004] 2. A voltage divider is used in the linear displacement sensor to reduce the requirement for the accuracy of the total resistance of the slide rail, and the temperature change will cause the resistance value to change and then affect the measurement results, so that the final output measurement signal is easily distorted, resulting in low output accuracy

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