Explosion-proof dual-technology inductive switch

Abstract

The invention discloses an explosion-proof dual-technology inductive switch, which comprises a shell and a PCB, and is characterized in that the shell is formed by die-casting high-strength alloy aluminum at one time, and the surface of the shell is subjected to high-voltage electrostatic spraying after being subjected to high-speed shot blasting; the PCB comprises a power supply module, a microwave detection module, an infrared detection module, a data acquisition unit, a data processing unit, a switch control unit and a switch module; the data acquisition unit acquires signals transmitted bythe microwave detection module and the infrared detection module and transmits the signals to the data processing unit, and the data processing unit processes the signals and transmits the signals tothe switch control unit to control on-off of the switch module. The inductive switch transmits signals to the data processing unit only when the microwave detection module and the infrared detectionmodule detect the signals at the same time. Interference of hot air and non-heat-source moving objects during infrared detection can be eliminated, interference of various heat sources during microwave detection can be eliminated, and the inductive switch is sensitive in induction and low in misoperation rate.

Description

Technical field [0001] The invention relates to the technical field of induction switches, in particular to an explosion-proof double-check induction switch. Background technique [0002] The traditional lighting system has simple structure, low price and easy installation and use. It has always been the protagonist of the lighting market. With the advancement of technology and the improvement of people's living standards, this kind of lamp has exposed many shortcomings: First, because it is a manual switch In the darkness, people had to fumble for light switches, which brought a lot of inconvenience to people’s lives. Second, there is a serious waste of electrical energy, especially in schools, factories and other collective living places. Lighting lamps often work during the day when there is sufficient light. This not only wastes electrical energy, but also causes the bulbs to often burn out. If they cannot be repaired in time, they will Produce other inconveniences. Third, ...

AI Technical Summary

Problems solved by technology

[0002] The traditional lighting system is simple in structure, low in price and easy to install and use. It has always been the leading role in the lighting market. , people have to fumble for the light switch in the dark, which brings a lot of inconvenience to people's life

Since the sensing components of the sound control itself are mechanical, they are easily affected by mechanical fatigue, and it is difficult to overcome the image of good sensitivity at the beginning of installation and low sensitivity at the later stage.

Therefore, in the later stage of use, the sound and light control switch can only be triggered by man-made noise. If you want to light up, you need to cough loudly, or stomp your feet, which obviously disturbs the quiet of others, especially people who often affect sleep at night.

In addition, the acousto-optic control is easy to respond to all the louder sounds in nature (such as thunder, car horns, engine sounds when cars pass by, electric drills in decorated rooms, sound of opening and closing anti-theft doors, etc.), and there are many misoperations

In addition to being vulnerable to damage and unsafe, the touch type also has the disadvantage of infectious bacteria, which is difficult to apply in public relations places, especially in places with complicated personnel such as hospitals.

The infrared sensor switch is sensitive to changes in the ambient temperature of the air, and the air flow has a great impact on the sensor. If it is used outdoors, the false action rate is very high.

Images