Counting method and device based on infrared array people sensor

Abstract

The counting method based on the infrared array number sensor of the present invention processes the output signal of the infrared array sensor arranged above the door, recognizes the outline generated by the human body, and tracks the movement direction of the outline; Judging whether people are entering or going out, so as to realize the counting of people entering and leaving. The counting device of the present invention includes a single-chip microcomputer system and an infrared array sensor connected thereto, a PIR sensor and a power supply circuit. The single-chip microcomputer system acquires an infrared image of a detection area through the infrared array sensor, and detects whether there is a person passing through the door through the PIR sensor. The counting method and device of the present invention solve the problem of low detection accuracy of infrared through-beam sensors when many people pass by, and have the advantages of multi-target tracking, high recognition accuracy, and low power consumption. Due to the high installation position, they are not easily damaged. The invention has advantages, remarkable beneficial effect and is suitable for application and popularization.

Description

technical field [0001] The present invention relates to a method and device for counting people, and more specifically, to a method and device for counting people based on an infrared array sensor. Background technique [0002] The number of people sensor, also known as the passenger flow counter, is a sensor that counts the number of people passing by. It is widely used in various intelligent control systems. There are two types of common people sensors: infrared and video recognition. [0003] The infrared direct-to-beam people sensor includes a transmitting end and a receiving end, which are respectively installed on both sides of the gate. The transmitting end generates two infrared rays, and the receiving end is mainly a reversible counter. By measuring the difference in the sequence of blocking the two infrared rays when people pass by, the direction of personnel entering and exiting is determined; by counting the number of blocking pulses, the number of personnel en...

AI Technical Summary

Problems solved by technology

This kind of sensor has high counting accuracy, but it is expensive. It needs good hardware and software to realize the identification algorithm. At the same time, it has high requirements for environmental parameters such as the illumination of the detection area. It is mainly used in occasions that require high accuracy of counting people.

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