Counting device, counting method and infrared detection system

A counting method and infrared detection technology, applied in measuring devices, counting mechanisms/items, speed/acceleration/shock measurements, etc., can solve problems such as inconvenient installation, susceptibility to radio frequency radiation interference, and restrictions on the application of passive infrared sensors

Inactive Publication Date: 2012-08-29
北京海兰德维通信技术有限公司
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Problems solved by technology

[0005] However, the active infrared counting 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, and it cannot be powered by a battery when counting applications; When counting the measured object, 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, poo

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  • Counting device, counting method and infrared detection system
  • Counting device, counting method and infrared detection system
  • Counting device, counting method and infrared detection system

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Embodiment Construction

[0068] The embodiment of the present invention proposes an infrared detection system and its counting method. Compared with the traditional counting method based on an active infrared sensor, the system and method are based on a passive infrared sensor, and can realize more accurate counting of measured objects. On the premise of ensuring high detection accuracy, the cost and power consumption of the infrared detection system will be significantly reduced.

[0069] The embodiment of a method for counting using a passive infrared sensor provided by the present invention is as follows: figure 1 As shown, among them, at least two passive infrared sensors are required.

[0070] First, the pulse signal of the passive infrared sensor is fused to obtain the fused signal;

[0071] When receiving the pulse signal 1 of the passive infrared sensor in the fusion signal, start the timer and start to build the dynamic data frame;

[0072] Determine whether to complete the construction of ...

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Abstract

The invention provides a counting device, a counting method and an infrared detection system. The counting method includes the following steps: the pulse signals of passive infrared sensors are fused, so that a fused signal is obtained; when the pulse signal of the first passive infrared sensor is received in the fused signal, a timer is started, and a dynamic data frame is constructed; according to the set time length of the timer, whether the construction of the dynamic data frame is finished is determined; when the construction of the dynamic data frame is finished, according to a decision rule, the judgment of the moving directions and number of detected targets is carried out on the dynamic data frame, and thereby accurate counting is realized by using the passive infrared sensors.

Description

technical field [0001] The invention relates to the field of infrared detection, in particular to a counting device, method and infrared detection system. 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 th...

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Application Information

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IPC IPC(8): G06M1/272G01P13/02
Inventor 初孟孙伟民李岸东韩志学汤洋
Owner 北京海兰德维通信技术有限公司
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