Differential type temperature controller detection probe based on electrical eddy currents and lift-off eliminating device and method thereof

Abstract

The invention discloses a differential type temperature controller detection probe based on electrical eddy currents and a lift-off eliminating device and method thereof. The lift-off eliminating device comprises a PC, an MC9S12XS128 single chip microcomputer system, an RS232 level switching circuit, a prompt device, an input signal photoelectric isolation circuit, an output signal photoelectric isolation circuit, a motor, a motor full-bridge driving circuit, a lower amplitude limiting contact, an upper amplitude limiting contact, a first magnet, a second magnet, a lifting device, a fixing mechanism and the differential type temperature controller detection probe. The differential type temperature controller detection probe based on the electrical eddy currents is adopted to carry out non-destructive testing, an electromagnetic ultrasonic effect is utilized, any coupling media are not needed, the detection speed is high, and production efficiency, detection sensitivity and reliability are high; the lift-off eliminating device is increased, so the fact that the probe is close to a temperature controller is guaranteed, a lift-off effect is eliminated, and sensitivity and accuracy of an eddy current detection probe are further improved; PC configuration software is utilized, so the working condition of the device can be monitored.

Description

technical field [0001] The invention relates to the technical field of eddy current detection, in particular to an eddy current-based differential temperature controller detection probe and a lift-off elimination device and method thereof. Background technique [0002] The thermostat can physically deform inside the switch according to the temperature change of the working environment, thereby producing some special effects, making the contacts close or open, and achieving the purpose of turning on or off the circuit, thereby controlling the circuit. Its application range is very wide. According to different types of thermostats, it is used in many products such as home appliances, motors, refrigeration or heating. [0003] One of the thermostats has a piece of metal inside, and the metal piece has a front and a back. If it is facing the wrong way, it cannot be used normally. In the actual production process, due to the limitation of production technology, some defective or...

AI Technical Summary

Problems solved by technology

However, if only the mechanical structure is simply used, there will be certain errors, and it cannot be guaranteed that the probe can achieve the minimum lift-off distance for each different object to be measured.

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