Carbon dioxide sensor calibration method used for air conditioning fresh air system
A carbon dioxide and calibration method technology, which is applied to the structural details, instruments, and scientific instruments of gas analyzers, and can solve problems such as inaccurate detection results of carbon dioxide sensors
Active Publication Date: 2019-08-20
QINGDAO HAIER AIR CONDITIONER GENERAL CORP LTD +1
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Problems solved by technology
[0006] In order to solve the above-mentioned problems in the prior art, that is, in order to solve the problem of inaccurate detection results of the carbon dioxide sensor of the existing air-conditioning fresh air system, the present invention provides a calibration method for the carbon dioxide sensor of the air-conditioning fresh air system, the carbon dioxide sensor It is used to detect the concentration value of carbon dioxide in the indoor air; the calibration method includes the following steps:
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[0029] Those skilled in the art should understand that the embodiments in this section are only used to explain the technical principle of the present invention, and are not used to limit the protection scope of the present invention. For example, the air-conditioning fresh air system of the present invention can be a device, device or system used solely for ventilation, or it can be a device, device or system attached to an air conditioner (with cooling and / or heating functions). Technicians can make adjustments as needed so as to adapt to specific application occasions, and the adjusted technical solution will still fall within the protection scope of the present invention.
[0030] What needs to be explained before is that the air-conditioning fresh air system of the present invention is mainly used to achieve ventilation between room air and outdoor air, that is, to discharge indoor turbid air to the outside and introduce fresh outdoor air into the room. The air-conditioni...
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The invention belongs to the air conditioning fresh air system control technology field and especially provides a carbon dioxide sensor calibration method used for an air conditioning fresh air system. A detection result of a carbon dioxide sensor of an existing air conditioning fresh air system is not accurate. In the invention, the above problem is solved. The calibration method comprises the following steps of opening a window; detecting a concentration value of carbon dioxide by the carbon dioxide sensor after the window is opened for a first predetermined period of time; according to thedetected concentration value, determining a calibration base point; and replacing the calibration base point with a standard value. The calibration method of the invention can be used to effectively avoid a situation that the carbon dioxide sensor drifts seriously as time goes on through the above steps so as to effectively ensure accuracy of a detection result of the carbon dioxide sensor.
Description
technical field [0001] The invention belongs to the technical field of air-conditioning fresh air system control, and specifically provides a calibration method for a carbon dioxide sensor of an air-conditioning fresh air system. Background technique [0002] The main function of the air-conditioning fresh air system is to realize the circulation and ventilation between the room air and the outdoor air, and to purify the air. The turbid air in the room is discharged to the outside through the air-conditioning fresh air system pipe to form an indoor and outdoor air pressure difference, completing the indoor and outdoor air exchange and refreshing the air. [0003] In order to avoid energy waste, the existing air-conditioning fresh air system is usually provided with a carbon dioxide sensor for detecting the concentration of carbon dioxide in the indoor air. Only when the indoor carbon dioxide concentration is greater than the set threshold, the fresh air system is turned on ...
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Login to View More IPC IPC(8): G01N33/00
CPCG01N33/004Y02B30/70
Inventor 于洋
Owner QINGDAO HAIER AIR CONDITIONER GENERAL CORP LTD