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A kind of temperature and humidity sensor self-checking method

A temperature and humidity sensor, temperature and humidity technology, used in instruments and other directions to prevent false alarms, improve service life and measurement accuracy

Active Publication Date: 2021-09-07
中广核工程有限公司 +2
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] Aiming at the above-mentioned problems in the prior art, the present invention provides a temperature and humidity sensor self-inspection method, which solves the problem of remote or on-site self-inspection of the temperature and humidity sensor, and can judge the working state and measurement performance of the sensor

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  • A kind of temperature and humidity sensor self-checking method
  • A kind of temperature and humidity sensor self-checking method
  • A kind of temperature and humidity sensor self-checking method

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Embodiment Construction

[0050] In order to enable those skilled in the art to understand the present invention more clearly, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0051] In order to solve the problem that the existing technology cannot judge and detect the real state and specific performance of the temperature and humidity sensor, the present invention aims to provide a self-checking method for the temperature and humidity sensor. Element, add a heating unit to the transmitter, when self-test is required, the space inside the probe filter will be heated after the heating unit controls the heating element to heat up, the environment in the filter will be affected, causing the temperature to rise and the humidity to drop . Therefore, it is possible to compare the temperature and humidity data collected after heating with the data before the self-test, and analyze whether the change value conforms to the ...

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Abstract

The invention provides a temperature and humidity sensor self-inspection method. The self-inspection method includes: respectively setting a heating element and a heating unit connected to the heating element in the probe and the transmitter; controlling the heating element to heat, and according to the collected The rising and falling changes of the temperature and humidity data determine the working state of the probe; in the test environment, the heating element is controlled to heat according to the self-test power, and the preset temperature and humidity curve covering the working temperature and humidity range of the sensor is obtained; during the self-test process Control the heating element to heat according to the self-test power to generate a self-test temperature and humidity curve; determine whether the sensor drifts according to the conformity of the self-test temperature and humidity curve and the preset temperature and humidity curve with the same temperature and humidity environment before heating. The temperature and humidity sensor self-inspection method provided by the invention can remotely determine the working state and performance of the sensor, solves the problem of the temperature and humidity sensor self-inspection, and has good technical effects.

Description

technical field [0001] The invention relates to the technical field of automation control and instrumentation, in particular to a self-checking method of a temperature and humidity sensor. Background technique [0002] figure 1 is the structural block diagram of the existing temperature and humidity sensor, such as figure 1 As shown, the temperature and humidity sensor generally includes a probe 10, a transmitter 20 and a host computer 30. The probe 10 is responsible for sensing the measured environment, the transmitter 20 is responsible for signal processing, calculation and output, and the host computer 30 is responsible for power supply and signal transmission. combine figure 2 As shown, the probe 10 is provided with a temperature sensitive element 11 and a humidity sensitive element 12, and is protected by a filter 14. The temperature sensitive element 11 usually adopts a thermistor RTD (such as: PT100, PT1000 or copper resistance) that is sensitive to temperature. T...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01D18/00
Inventor 夏祖国何小波张华骆楠珂王楷王敬龚海洪张国庆周新建田骏
Owner 中广核工程有限公司
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