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Motion detection method and device

A technology of motion detection and movement, applied in the direction of optical device exploration, etc., can solve the problems of signal lack of flexibility, detection dead angle, etc., achieve the effect of reducing detection dead angle and improving detection accuracy

Active Publication Date: 2019-03-29
LITE ON TECH CORP
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] However, because the infrared energy emitted by objects at different positions and at different distances is different, and the signal received by the infrared sensor is often affected by changes in the surrounding environment (for example, temperature changes), a single threshold is used to control The signal is inflexible in making judgments, and it is easy to produce detection dead angles when adjusting the sensor field of view (FOV)

Method used

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  • Motion detection method and device
  • Motion detection method and device
  • Motion detection method and device

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Embodiment Construction

[0034] figure 1 A schematic block diagram of a motion detection device in an embodiment of the present invention is shown.

[0035] Please refer to figure 1 , the motion detection device 100 includes a motion detector 110 , a storage element 120 and a controller 130 . The controller 130 is coupled to the motion detector 110 and the storage element 120 for controlling the overall operation of the motion detection device 100 .

[0036] The motion detector 110 is used to obtain a detection signal. In one embodiment, the motion detector 110 is, for example, a passive infrared sensor (passive infrared sensor, PIR sensor), which absorbs infrared radiation signals and correspondingly generates positive and negative oscillating analog detection signals, but the present invention is not limited thereto. . For example, when someone enters the field of view (FOV) of the motion detector 110 , the vibration of the analog detection signal will also increase due to the increase of the ab...

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Abstract

The invention provides a motion detection method which comprises the following steps that an expected detection scope is set; test detection signals, corresponding to expected detection results, are obtained within the expected detection scope; and according to the test detection signals and the corresponding expected detection results, a determination parameter group is generated. Thus, a motiondetection device via the method is also provided.

Description

technical field [0001] The invention relates to a detection method and a detection device, in particular to a motion detection method and a motion detection device capable of dynamically correcting a detection range. Background technique [0002] Traditionally called motion detectors or dynamic detectors usually use a passive infrared sensor (passive infrared sensor, PIR sensor) to passively absorb infrared radiation signals, and pass through a special Fresnel lens (Fresnel lens) on the surface of the sensor. Lens), and then generate an analog signal with positive and negative oscillations. For such an analog signal, a common practice is to sample it, and then compare the sampled signal with a preset threshold to determine whether there is an object approaching. [0003] However, because the infrared energy emitted by objects at different positions and at different distances is different, and the signal received by the infrared sensor is often affected by changes in the sur...

Claims

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Application Information

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IPC IPC(8): G01V8/10
CPCG01V8/10
Inventor 林素珍林士荣陈俊谚
Owner LITE ON TECH CORP