Gas concentration measurement method, device and air purifier
A gas concentration measurement and gas concentration technology, applied in the field of gas detection, can solve the problems of lowering vigilance, not fundamentally improving measurement accuracy, low VOC concentration, etc., to overcome the influence of temperature and humidity, and reliable gas concentration measurement value , Improve the effect of user experience
Active Publication Date: 2019-03-12
A O SMITH (CHINA) WATER HEATER CO LTD
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Problems solved by technology
In the current environment, users who see low VOC concentrations are likely to reduce their vigilance, thereby increasing the risk of poisoning
In addition, when the sensor has zero point drift, even if the subsequent calibration operation is performed, since the reference as the zero point is unknown, the calibration has no practical significance due to lack of basis, and cannot fundamentally improve the measurement accuracy
[0005] Therefore, it is necessary to propose a new gas concentration measurement technology to overcome the zero drift problem of existing sensors during use, reduce temperature and humidity interference, and improve measurement accuracy, so as to provide users with accurate and reliable gas concentration measurement value
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[0062] The technical solution of the present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be understood that these embodiments are only used to illustrate the present invention and are not intended to limit the scope of the present invention. After reading the present invention, those skilled in the art Modifications to various equivalent forms of the present invention fall within the scope defined by the appended claims of the present application.
[0063] It should be noted that when an element is referred to as being “disposed on” another element, it may be directly on the other element or there may also be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or intervening elements may also be present. As used herein, the terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar exp...
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The invention discloses a gas concentration measurement method, device and air purifier. The method includes: applying a first predetermined voltage to a sensor component, and receiving a first electrical signal output by the sensor component after a first predetermined time; loading a first predetermined voltage Two predetermined voltages are applied to the sensor component, and after a second predetermined time, the second electrical signal output by the sensor component is received; based on the response curve of the sensor in the sensor component and the received first electrical signal, the second electrical signal The signal determines the gas concentration. The gas concentration measurement method, device, and air purifier provided by the present invention can overcome the problem of zero point drift, reduce temperature and humidity interference, thereby obtain accurate and reliable gas concentration measurement values, and improve user experience.
Description
technical field [0001] The invention relates to the field of gas detection, in particular to a gas concentration measurement method, device and air purifier. Background technique [0002] At present, researchers are conducting research on indoor air quality, usually taking the sum of all indoor volatile organic compounds (VOC Volatile Organic Compound) obtained by sampling and analysis as an important indicator for evaluating indoor air quality. Among them, various measured VOCs are collectively referred to as TVOC Total Volatile Organic Compounds, which include all C-H compounds such as alcohols, aldehydes, benzene, ketones, and alkanes. [0003] When the concentration of VOC in a relatively closed room or in a car is too high, it is easy to cause acute poisoning of the human body. In mild cases, symptoms such as headache, dizziness, cough, nausea, and vomiting will occur; in severe cases, convulsions will occur and damage to the human liver, kidneys, brain and nervous sys...
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IPC IPC(8): G01N27/12
CPCG01N27/122
Inventor 赵荻刘世强杨林峰
Owner A O SMITH (CHINA) WATER HEATER CO LTD