Piezochromism effect-based vibration visual sensor

Abstract

The invention belongs to the field of sensors, and particularly relates to a piezochromism effect-based vibration visual sensor. The piezochromism effect-based vibration visual sensor comprises a flexible substrate, a piezoelectric sensor, a rectifier and an electrochromism device, wherein the piezoelectric sensor, the rectifier and the electrochromism device are arranged on the flexible substrate, the piezoelectric sensor is connected with an AC input end of the rectifier, a DC output end of the rectifier is connected with the electrochromism device, so that a vibration signal is converted tocolor response. The fabricated vibration visual sensor is flexible and is resistant to bending, a piezoelectric signal and an electrochromism signal which are generated under a bending condition areapproximate to a numerical value in a smooth state, and the vibration visual sensor can be completely attached onto a surface of a vibration object.

Description

technical field [0001] The invention belongs to the field of sensors, in particular to a vibration visualization sensor based on piezochromic effect. Background technique [0002] In our daily life, vibration is ubiquitous, which brings many hazards to the structural health of roads, bridges and machines, as well as people's life safety, but real-time monitoring of pressure is still a great challenge. In recent years, with the rapid development of sensor technology, real-time structural health monitoring systems based on various monitoring technologies have been widely used in engineering fields such as bridges and high-rise buildings. Among them, piezoelectric accelerometers are common vibration-based structural health monitoring devices, but piezoelectric accelerometers are cumbersome and time-consuming to operate, and have high-power data acquisition systems, so piezoelectric accelerometers are expensive and inconvenient to operate. Another major challenge is that they r...

AI Technical Summary

Problems solved by technology

However, there are some problems in this technology. The device needs an external voltage, and the passive pressure visualization is not realized. The energy consumption is relatively high, and the organic electrochromic material used is not as high as the color changing efficiency and the color changing speed of the inorganic electrochromic material.

[0005] Therefore, for the vibration visualization sensor, it is necessary to overcome the shortcomings of the rigidity of the device, and to solve the problems of high vibration pressure, low color contrast, and high energy consumption of the external power supply.

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