Alarm method and device based on light sensor and magnetic sensor

Abstract

The invention provides an alarm method and device based on an optical sensor and a magnetic sensor. The magnetic sensor and the magnetic object are respectively arranged on two sides corresponding to the opening and closing structure; when the magnetic sensor detects the magnetic field generated by the magnetic object, the light The sensor starts to work and measures the ambient light intensity data in real time; when the light sensor detects that the intensity of the ambient light changes from dark to bright and exceeds the preset threshold, and the magnetic sensor does not detect the magnetic field generated by the magnetic object after exceeding the set time When the intensity changes, the first alarm indication is given; when the light sensor detects that the ambient light intensity continuously changes from dark to bright and exceeds the preset threshold, and from bright to dark exceeds the preset threshold within the set threshold time, Carry out the second alarm indication. The invention can accurately indicate the alarm and avoid the occurrence of false alarms.

Description

technical field [0001] The invention relates to the field of anti-theft alarm technology, in particular to an alarm method and device based on an optical sensor and a magnetic sensor. Background technique [0002] With the development of science and technology, people's requirements for anti-theft alarm technology are getting higher and higher. In order to meet people's growing needs, various anti-theft alarm products emerge in an endless stream on the market, such as anti-lost devices, fingerprint locks, combination locks, etc. However, conventional products have the following disadvantages: 1. Large size and poor portability; 2. When some anti-theft products are far away from users, they cannot give alarm instructions to users in time; 3. Some products are complicated to operate and need to memorize passwords, A series of operations such as setting fingerprints bring inconvenience to users. [0003] In recent years, portable anti-theft alarm devices using light sensors ha...

AI Technical Summary

Problems solved by technology

[0002] With the development of science and technology, people's requirements for anti-theft alarm technology are getting higher and higher. In order to meet people's growing needs, various anti-theft alarm products emerge in an endless stream on the market, such as anti-lost devices, fingerprint locks, combination locks, etc. However, conventional products have the following disadvantages: 1. Large size and poor portability; 2. When some anti-theft products are far away from users, they cannot give alarm instructions to users in time; 3. Some products are complicated to operate and need to memorize passwords, A series of operations such as setting fingerprints will cause inconvenience to users

[0003] In recent years, portable anti-theft alarm devices using light sensors have gradually entered people's field of vision, and alarms are made by using changes in light intensity. However, at present, the effect of anti-theft alarms is not ideal. The problem of false positives

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