A Barometric Pressure Sensor with Temperature Compensation and Parameter Setting Measures

An air pressure sensor and temperature sensor technology, applied in the sensor field, can solve the cumbersome problems of re-calibrating and calibrating the air pressure sensor, and achieve the effects of enhancing reliability and ease of use, realizing model parameter tuning, and realizing range tuning.

Active Publication Date: 2021-02-26
RUILI GROUP RUIAN AUTO PARTS CO LTD +1
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  • Summary
  • Abstract
  • Description
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Problems solved by technology

After the air pressure sensor leaves the factory, it becomes very cumbersome to recalibrate and calibrate the air pressure sensor

Method used

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  • A Barometric Pressure Sensor with Temperature Compensation and Parameter Setting Measures
  • A Barometric Pressure Sensor with Temperature Compensation and Parameter Setting Measures
  • A Barometric Pressure Sensor with Temperature Compensation and Parameter Setting Measures

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Embodiment Construction

[0046] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. When the following description refers to the accompanying drawings, unless otherwise stated, the same numbers in different drawings represent the same or similar elements.

[0047] Such as figure 2 As shown, it is a functional block diagram of the temperature compensation module of the air pressure sensor of the present invention, and the specific idea of ​​the temperature compensation method is:

[0048] Assuming that the original value of the ambient air pressure detected by the air pressure detection unit is P0, and the temperature detected by the temperature sensor is T, because the air pressure P0 detected by the air pressure detection unit will cause temperature drift, so the actual ambient air pressure Pt and the air pressure P0 and temperature T There is a n...

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Abstract

The invention discloses an air pressure sensor with temperature compensation and parameter setting measures, which solves the problem that the existing air pressure sensor is easily affected by temperature, resulting in decreased accuracy and reliability. The air pressure sensor of the present invention includes a processor, an air pressure detection unit, a temperature sensor and a signal processing unit, adopts a combination algorithm PSO-SVR of particle swarm optimization and support vector regression machine to establish a temperature compensation model to compensate for the temperature drift caused by low-cost air pressure sensitive components , thereby greatly enhancing the reliability and ease of use of the air pressure sensor; the air pressure sensor of the present invention has a normal working mode and a parameter setting mode, and through the single-wire communication technology of the air pressure sensor, the external controller realizes the model parameter setting and range of the air pressure sensor Setting and other functions.

Description

technical field [0001] The invention relates to the technical field of sensors, in particular to an air pressure sensor with temperature compensation and parameter setting measures. Background technique [0002] The air pressure sensor is used to collect the ambient air pressure value, and send the collected air pressure information to the subsequent processing unit for analysis. During actual use, the ambient temperature will affect the sensitive components inside the air pressure sensor, resulting in actual measurement errors of the sensor. [0003] The ambient air pressure collected by the existing air pressure sensor using the air pressure sensitive element is easily affected by the temperature and produces temperature drift phenomenon. In order to solve the influence of temperature on the air pressure measurement, the common method is to perform temperature compensation on the air pressure sensor used in the external controller. , this method occupies processor resourc...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01L7/00G01L19/04G01L27/00
CPCG01L7/00G01L19/04G01L27/002
Inventor 陈亮冯跃池华陈积明贺诗波
Owner RUILI GROUP RUIAN AUTO PARTS CO LTD
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