Infrared detection system suitable for field of alarm
An infrared detection and infrared receiving technology, applied in the field of infrared detection, can solve the problems of low integration and large volume, and achieve the effects of simple implementation, low cost and simple structure
Inactive Publication Date: 2013-02-27
RFDOT MICROELECTRONICS
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Problems solved by technology
The final product is relatively large in size and low in integration, so it does not have good applicability for the occasions where the application environment of some alarm systems is narrow or requires high integration
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[0028] The detailed description of the present invention directly or indirectly simulates the operation of the technical solution of the present invention mainly through programs, steps, logic blocks, processes or other symbolic descriptions. In the ensuing description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. Rather, the invention may be practiced without these specific details. These descriptions and representations herein are used by those skilled in the art to effectively convey the substance of their work to others skilled in the art. In other words, for the purpose of avoiding obscuring the present invention, well-known methods and procedures have not been described in detail since they have been readily understood.
[0029] Reference herein to "one embodiment" or "an embodiment" refers to a particular feature, structure or characteristic that can be included in at least one implementation of the pres...
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The invention provides an infrared detection system suitable for the field of alarm. The infrared detection system comprises a signal generating module, an infrared emission module, an infrared receiving module, a receiving amplification module, a signal identification module and an alarm determining module, wherein the signal generating module is used for generating a reference signal; the infrared emission module is used for exciting an infrared light-emitting diode to emit infrared rays by utilizing the reference signal; the infrared receiving module is used for receiving the infrared raysto acquire a target signal by utilizing an infrared reception diode; the receiving amplification module is used for amplifying the target signal; the signal identification module is used for acquiring a series of sampling points, comparing values of the sampling points with a value of the reference signal at the corresponding position, adding one to a base number if the values of the sampling points are equal to the value of the reference signal at the corresponding position, subtracting one from the base number and not processing the base number if the values of the sampling points are not equal to the value of the reference signal at the corresponding position, judging whether the base number reaches a preset threshold value or not, and determining that an object is detected and outputting a determining result when the base number reaches the preset threshold value; and the alarm determining module is used for sending an alarm signal when the object is not detected in a plurality ofcontinuous preset work durations.
Description
【Technical field】 [0001] The invention relates to the field of infrared detection, in particular to an infrared detection system with high integration and low power consumption applicable to the field of alarm. 【Background technique】 [0002] At present, many active infrared detection devices on the market are used in the field of alarm, such as the monitoring of safes or fixed objects. Taking an existing safe as an example, an active infrared detection device is installed inside to detect whether the door of the safe is opened, and an alarm message is sent when the door is opened maliciously. Among them, the active infrared detection device is an infrared detection device that detects by actively emitting infrared rays and then receiving infrared rays reflected back from objects. The disadvantage of traditional active infrared detection equipment is that the anti-interference ability is very weak. In the case of changes in the detection or working environment, such as the ...
Claims
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IPC IPC(8): G08B13/181
Inventor 冯向光孙海顾奇龙
Owner RFDOT MICROELECTRONICS