Infrared detection system
An infrared detection and reference signal technology, applied in the field of infrared detection, can solve the problems of lack of applicability, low integration, large size, etc., and achieve the effect of good anti-interference ability, simple implementation and low cost
Inactive Publication Date: 2013-11-06
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 some occasions with narrow application environments or high integration requirements
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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 which comprises the following parts: a signal generation module which generates a reference signal, wherein with intervals of predetermined idle duration the reference signal contains a pulse signal containing a fixed duty ratio of predetermined work duration; an infrared transmission module which utilizes the reference signal to excite an infrared light emitting diode to emit infrared ray; an infrared reception module which utilizes an infrared reception diode to receive the infrared ray so as to obtain an object signal; a reception amplification module which amplifies the object signal; a signal identification module which samples the object signal in a predetermined work duration to obtain a series of sampling points and compare values of the sampling points with values of reference signal corresponding positions, wherein when the values of the sampling points are the same with the values of the reference signal corresponding positions, adding 1 for a radix, otherwise carrying out no processing on the radix; then determining whether the radix reaches a predetermined threshold or not, if so, determining that an object is detected and outputting a determination result.
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. 【Background technique】 [0002] With the advancement of information technology, more and more intelligent devices are applied to various fields. Such as the bathroom system and alarm system in life. These systems or devices are usually implemented using infrared detection technology. For example, in the bathroom system, infrared detection technology can be used to detect whether there is an obstruction in the designated area, and when the obstruction exists for a certain period of time, it will be removed, and operations such as flushing will be performed. [0003] The advantage of this infrared detection technology is that it does not require human judgment or action, but automatically performs different operations through infrared induction, which is more intelligent, convenient and practical. H...
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IPC IPC(8): G01S17/02G01S7/484
Inventor 冯向光孙海顾奇龙
Owner RFDOT MICROELECTRONICS