Overvoltage warning device and method based on pressure sensor and electrochromic device

Abstract

The invention discloses an overvoltage warning device and method based on a pressure sensor and an electrochromic device. The overvoltage warning device comprises a control circuit, a signal input line, a trigger pressure adjustment knob, a voltage display area, a delay adjustment knob, a delay trigger switch, an output line and an electrochromic device, wherein the control circuit is provided with a pressure sensor, a first slide rheostat, a voltmeter, an NPN triode, a second slide rheostat and a switch; the signal input line is extracted from two ends of the pressure sensor; the trigger pressure adjustment knob is connected with the first slide rheostat; the voltage display area is connected with the voltmeter; the delay adjustment knob is connected with the second slide rheostat; the delay trigger switch is connected with the switch; the output line is extracted from an output end; and the electrochromic device is connected with two ends of the output line. When the overvoltage warning device is triggered by pressure, the output voltage is immediately reversed, and the electrochromic device is enabled to change in color; and when the pressure is below a trigger value, the outputvoltage is enabled to be reversed again, and the electrochromic device is enabled to return back to be original color. The overvoltage warning device is simpler and more stable in control circuit, less in consumed electric energy, safer and more environment-friendly and has a good warning effect.

Description

technical field [0001] The invention relates to the field of overvoltage warning equipment, in particular to an overvoltage warning device and method based on a pressure sensor and an electrochromic device. Background technique [0002] Overvoltage warning devices have a very wide range of applications, especially in industrial production, the requirements for overvoltage warning devices are also very strict. At present, most of the devices used for warning in existing overvoltage warning devices use liquid crystal or digital tube display. Many functions and complex control circuits are not conducive to improving the stability of the system, the service life is short, and high voltage and current are required, which is not conducive to improving the safety of the system. [0003] Electrochromism refers to the phenomenon that the optical properties of the material (reflectivity, transmittance, absorption rate, etc.) undergo a stable and reversible color change under the actio...

AI Technical Summary

Problems solved by technology

[0002] Overvoltage warning devices have a very wide range of applications, especially in industrial production, the requirements for overvoltage warning devices are also very strict. At present, most of the devices used for warning in existing overvoltage warning devices use liquid crystal or digital tube display. Many functions and complex control circuits are not conducive to improving the stability of the system, the service life is short, and high voltage and current are required, which is not conducive to improving the safety of the system

[0003] Electrochromism refers to the phenomenon that the optical properties of the material (reflectivity, transmittance, absorption rate, etc.) undergo a stable and reversible color change under the action of an external electric field. Devices made of electrochromic materials are called electrochromic devices. Only a weak current and a voltage of about 1V can control discoloration, and the control is simple. At present, electrochromic devices have not been used in overvoltage warning devices.

Images