Infrared array number-of-personnel sensor-based counting method and apparatus

Abstract

An infrared array number-of-personnel sensor-based counting method and apparatus comprises the following steps: processing an output signal of an infrared array sensor arranged above a door, identifying the contour of human bodies, and tracking the movement direction of the contour; and judging personnel goes in or out according to the movement track of the contour to realize counting of personnel access to the door. A counting apparatus comprises a single-chip microcomputer system, and the infrared array sensor, a PIR sensor and a power supply circuit which are connected with the single-chip microcomputer system, and the single-chip microcomputer system acquires the infrared image of a detection area through the infrared array sensor, and detects whether personnel passes by the door or not through the PIR sensor. The counting method and the counting apparatus solve the problem of low detection precision of infrared emission and reception sensors in the process of multiple persons passing through the door, has the advantages of multi-target tracking, high identification precision and low power dissipation, is difficult to damage due to high installing position, has substantial advantages, and adapts to application promotion.

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 people sensor. Background technique [0002] The 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. Common people sensors mainly have two types: infrared through-beam and video recognition. [0003] The infrared through-beam people sensor includes a transmitter and a receiver, which are installed on both sides of the gate. The transmitting end produces 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 the person passes by, the direction of the person's entry and exit is determined; the number of persons entering and exiting the sensor is calculated by counting the number...

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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