Infrared detection system and method

Abstract

The embodiment of the invention provides an infrared detection method and an infrared detection system. The infrared detection method comprises the following steps: receiving a first trigger signal generated through the trigger of first passive infrared sensing equipment; sending a second timer starting instruction and starting a second timer; in the timing process of the second timer, waiting to receive a second trigger signal which is generated through the trigger of second sensing equipment; and determining that a detection result is that a detection target exists in a detection area if the second trigger signal is received in the timing process of the second timer. The infrared detection method and the infrared detection system can accurately detect that whether the detection target exists in the detection area.

Description

technical field [0001] The invention relates to the field of infrared detection, in particular to an infrared detection system and method. Background technique [0002] With the development of science and technology, infrared detection technology is widely used in communication, military, aerospace, medical, detection and other scientific fields, such as infrared automatic hand dryer, infrared alarm, infrared temperature measurement, infrared counting and so on. [0003] Active infrared detection method and passive infrared detection method are two main detection methods of infrared detection technology. The active infrared detection device is composed of an active infrared transmitter and an active infrared receiver. When the infrared beam between the transmitter and the receiver is completely blocked or blocked by a given percentage, a trigger signal can be generated. The passive infrared detection device works by detecting the infrared rays released by the measured objec...

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Problems solved by technology

[0004] However, the active infrared detection device has the following problems: when the active infrared is working, it needs to continuously emit infrared rays to the outside world, resulting in high power consumption; During infrared sensing, the transmitter and receiver must be installed on both sides of the measured object, which is inconvenient to install and limits the wide application of active infrared

However, due to the shortcomings of passive infrared sensors that are easily interfered by various heat sources, poor penetration, and susceptible to radio frequency radiation interference, the application of passive infrared sensors is limited.

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