Intelligent Ultrasonic Access Control Sensor

Abstract

The invention provides an intelligent ultrasonic entrance guard inductor used for identity authentication and entrance guard management. The intelligent ultrasonic entrance guard inductor comprises the following parts: an ultrasonic detection module, a micro control unit (MCU) module, a power supply module and an output module. Compared with the prior art, the intelligent ultrasonic entrance guard inductor has the advantages that a human body can be detected in advance, passive detection is changed into active detection, a detection result can be timely fed back to other systems, and a time guarantee is provided for realizing preliminary judgment and pre-execution in other systems, such as entrance guard voice guide and entrance guard indicating lamp guide. The intelligent ultrasonic entrance guard inductor is low in cost and high in cost performance and can be widely applied to various passage gates.

Description

technical field [0001] The invention relates to identity verification and access control management in public places, in particular to an intelligent ultrasonic access control sensor. Background technique [0002] As more and more venues, venues, parks and buildings use channel gates for personnel entry and exit identity verification and access control management, channel gates often use infrared sensors to detect human traffic conditions, thereby realizing Anti-following, traffic counting and other functions. In particular, wing gates and swing gates are widely used, while tripod gates can realize counting and anti-following functions without the use of other devices due to the design of its own mechanical structure and the use of limit switches. [0003] The infrared beam sensor is composed of a sending unit and a receiving unit, and senses the existence of an object by whether the receiving unit receives the infrared light emitted by the transmitting unit. If the receiv...

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Problems solved by technology

[0007] Therefore, the existing access gates have the following defects: the human body cannot be detected in advance, it must be detected when the human body blocks the infrared light, and active detection cannot be performed; the cost is high and the cost performance is low; it must be installed in pairs, which is troublesome to install and debug. The efficiency of debugging is low; when it is used in outdoor venues, it is prone to false alarms when it is exposed to direct or oblique sunlight; the detection range is extremely limited, and it is a directional passive detection sensor

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