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Sensing device

A sensing device and a technology for sensing voltage, applied in the directions of measuring devices, using electrical devices, measuring heat, etc., can solve problems such as increasing the complexity of calibration, increasing the circuit manufacturing cost of the sensing device, etc.

Active Publication Date: 2021-01-19
IND TECH RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The above problems increase the circuit manufacturing cost of the sensing device, increase the complexity of calibration, etc.

Method used

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Embodiment Construction

[0015] In order to make the objects, features and advantages of the present invention more comprehensible, preferred embodiments will be described in detail below together with the accompanying drawings.

[0016] figure 1 represents a sensing device according to an embodiment of the present invention. refer to figure 1 The sensing device 1 can be placed in space and includes a plurality of sensing circuits 10 , a plurality of digital output circuits 11 , a digital control circuit 12 , and a detection circuit 13 . The sensing circuits 10 are used to sense the temperatures of the thermistors, and directly output a plurality of digital sensing signals in digital form. A plurality of digital output circuits 11 respectively receive digital sensing signals, and generate a plurality of half-period counting values ​​according to the received digital sensing signals. The digital control circuit 12 receives the half-cycle count value, and generates a plurality of temperature values ​...

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Abstract

A sensing device is provided. The sensing device includes a plurality of infrared thermosensitive elements and a plurality of resistor-capacitor (RC) oscillators. The plurality of infrared thermosensitive elements are arranged in an array. Each of the plurality of infrared thermosensitive elements has a resistance value which changes with a temperature of the infrared thermosensitive element by absorbing infrared radiation and generates a sensing voltage corresponding to the resistance value. The plurality of RC oscillators are coupled to the plurality of infrared thermosensitive elements to receive the corresponding sensing values, respectively. Each of the plurality of RC oscillators generates a digital sensing signal according to the corresponding sensing value to indicate the temperature of the corresponding infrared thermosensitive element. Each of the plurality of RC oscillators is disposed under the corresponding infrared thermosensitive element.

Description

technical field [0001] The present invention relates to a detection device, and in particular to a temperature detection device with an infrared thermistor. Background technique [0002] Infrared thermal imaging has been widely used in applications such as thermal imagers, personal thermal imaging devices, night vision and security monitoring devices, and smartphones. A sensing device for detecting infrared thermography generally has an infrared thermistor, such as an infrared thermistor, whose resistance value changes with temperature. In current sensing devices with infrared thermistors, the detection circuit used to sense changes in the resistance of the thermistor generally outputs voltage / current signals in analog form, so it is necessary to use an analog-to-digital converter to convert the voltage / Current signals are converted into digital signals for processing by back-end processors. In addition, to avoid saturation of the amplifier after the detection circuit, mu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01J5/24G01K7/24
CPCG01J5/24G01K7/245G01D5/24G01J5/22G01K7/22G01K7/203
Inventor 罗英哲林育圣萧丁豪李柏勋
Owner IND TECH RES INST