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Infrared position sensing device

A sensing device, infrared technology, used in optical device exploration, electrical radiation detectors, etc., can solve problems such as inability to distinguish human bodies

Inactive Publication Date: 2018-01-16
ORIENTAL SYST TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the pyroelectric infrared position sensor is dynamic sensing, that is, it can only detect the moving human body, and there is no signal output when the human body is stationary
Therefore, the pyroelectric infrared position sensor cannot distinguish between the human body not in the sensing range and the human body in the sensing range but not moving
This often causes problems in some applications, such as reading lights, toilet lighting, hotel air conditioning, etc.

Method used

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Embodiment Construction

[0033] Various embodiments of the present invention will be described in detail below and illustrated with accompanying drawings. In addition to the multiple detailed descriptions, the present invention can also be widely implemented in other embodiments, and any easy replacement, modification, and equivalent changes of any of the described embodiments are included in the scope of the present invention, and are subject to patent application. range prevails. In the description of the specification, many specific details are provided in order to enable readers to have a more complete understanding of the present invention; however, the present invention may still be practiced under the premise of omitting some or all of the specific details. Furthermore, well-known steps or elements have not been described in detail in order to avoid unnecessarily limiting the invention. The same or similar elements in the drawings will be denoted by the same or similar symbols. It should be n...

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Abstract

The invention discloses an infrared position sensing device, and the device comprises a thermopile sensing element and a signal processor. The thermopile sensing element senses the infrared light emitted in a sensing range, and outputs a corresponding first sensing signal. The signal processor is electrically connected with the thermopile sensing element, and processes the first sensing signal, soas to obtain a background sensing value and a current sensing value. The signal processor judges whether the difference between the current sensing value and the background sensing value is greater than a first critical value or not, so as to determine whether there is a target object in the sensing range, and output a corresponding first control signal. The device still can recognize whether a human body is in the sensing range or not under the condition that human body is stationary.

Description

technical field [0001] The present invention relates to a position sensing device (Occupancy sensor), especially an infrared position sensing device. Background technique [0002] Energy saving and carbon reduction is a common issue that people are facing at present. Along with economic growth, household electricity consumption has grown by leaps and bounds due to the popularization of lighting, refrigerators, and air-conditioning systems. Therefore, it is urgent to develop energy-saving home appliances or control systems. According to statistics, home lighting accounts for about 15% of household electricity consumption, and air-conditioning systems account for about 19-22% of household electricity consumption. In order to take into account comfort and energy saving, human body sensors can be used to detect whether there are people within the sensing range. When people are not within the sensing range, it will automatically enter the energy saving mode, such as turning of...

Claims

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Application Information

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IPC IPC(8): G01J5/12G01V8/10
Inventor 王建勋游文章余建兴古仁斌
Owner ORIENTAL SYST TECH
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