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Method and device for calibrating air pressure sensor

A technology of air pressure sensor and calibration method, applied in the field of sensors, can solve the problems of wasting time, unclear, unable to reduce product defect rate, etc.

Active Publication Date: 2020-01-03
WEIFANG GOERTEK MICROELECTRONICS CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] However, in the prior art, the calibration parameter C j After burning into the pressure sensor, in fact, those skilled in the art do not know the calibration parameter C burned in j Whether it is correct, generally by comparing the original data Pt actually measured by the air pressure sensor k and set the actual pressure environment Ps k Determine the calibration parameter C j Is it correct? If it is not correct, it needs to be reprogrammed, which is a waste of time and can not reduce the unnecessary defective rate of the product.

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  • Method and device for calibrating air pressure sensor
  • Method and device for calibrating air pressure sensor
  • Method and device for calibrating air pressure sensor

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Embodiment Construction

[0033] Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that the relative arrangements of components and steps, numerical expressions and numerical values ​​set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise.

[0034] The following description of at least one exemplary embodiment is merely illustrative in nature and in no way taken as limiting the invention, its application or uses.

[0035] Techniques, methods and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, such techniques, methods and devices should be considered part of the description.

[0036] In all examples shown and discussed herein, any specific values ​​should be construed as exemplary only, and not as limitations. Therefore, other instances of the exemplary embodiment may have dif...

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Abstract

The invention discloses a method and device for calibrating an air pressure sensor, and the calibration method comprises the following steps of obtaining raw data Ptk measured by the air pressure sensor; determining whether the raw data Ptk is obtained, and ending the calibration if not; if so, proceeding to the next step; determining whether the obtained raw data Ptk is correct, and ending the calibration if not; if so, proceeding to the next step; and calculating calibration parameters Cj, wherein k represents the time value, j represents the number of calibration parameters, and the calibration parameters Cj are configured to calibrate the air pressure sensor. The invention improves the measurement accuracy of the air pressure sensor while improving the calibration efficiency of the airpressure sensor.

Description

technical field [0001] The invention relates to the technical field of sensors, in particular to a calibration method and a calibration device for an air pressure sensor. Background technique [0002] The air pressure sensor is mainly used to measure the pressure of the gas. The air pressure sensor is usually used to measure the air pressure, measure the change of the weather, and use the corresponding relationship between the air pressure and the altitude to measure the altitude and so on. [0003] Therefore, in order to improve the measurement accuracy of the air pressure sensor, the calibration process of the air pressure sensor plays a vital role. At present, the process of calibrating the barometric pressure sensor is generally, after setting the actual pressure environment Ps k Read the raw data Pt of the actual test of the air pressure sensor k , and then the acquired raw data Pt k and set the actual pressure environment Ps k Input into a specific formula F(Ps, Pt...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01L25/00
CPCG01L25/00
Inventor 孙延娥付博方华斌
Owner WEIFANG GOERTEK MICROELECTRONICS CO LTD