Building security system and building security method based on pulse light spot array pattern change detection

Abstract

The invention provides a building security system and a building security method based on pulse light spot array pattern change detection. The building security system comprises a camera, a mainframe, a warning device and a light source, the light source gives out dot matrix rays by a pulse irradiation method, the dot matrix rays irradiate on a detection area to form a light spot array, a sensor for detecting the light spot array is arranged in the camera, and a grating used for adjusting shape of the light spot array and number of light spots is further arranged in front of the light source. Real-timeness and improved efficiency of detection can be achieved by adjusting the light spots and parameters of an image sensor, the building security is easy to implement and low in cost, and has a great application prospect. The building security method is capable of realizing intrusion detection within a variable range by changing the number of the light spots, light spot array pattern and position of the light source for changing detection range.

Description

technical field [0001] The invention belongs to the technical field of building security, and relates to the detection of foreign object intrusion in a security system, in particular to a real-time building security system and security method based on detection of changes in pulse light spot array patterns. Background technique [0002] With the improvement of people's living standards and the increase of security awareness, the application of security systems is becoming more and more extensive. At present, the technical means used in the security system mainly include: protection technology based on traditional sensors (infrared, door magnetism, etc.), protection technology based on biometrics and protection technology based on video surveillance. Among them, traditional sensors have relatively simple functions and are usually installed At the entrance and exit, the alarm needs to be triggered passively. However, once the triggering characteristics of the sensor are master...

AI Technical Summary

Problems solved by technology

Third, for the scenarios of extensive deployment and temporary deployment, the product cost needs to be controlled to a certain extent

Fourth, deployment should not be too complicated

Fifth, the security system needs to have a certain degree of concealment

In the field of security, missed detection will cause great safety hazards, and there is zero tolerance for the existence of missed detection; while false detection will cause unnecessary transfer of personnel and equipment, wasting manpower and material resources

Therefore, this kind of system shoulders the task of reducing the false detection rate and missed detection rate at the same time, which is a great difficulty for analyzing and identifying algorithms and system construction.

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