Atmospheric calibration method, atmospheric calibration device and atmospheric calibration system for oxygen sensor

Abstract

The invention provides an atmospheric calibration method, an atmospheric calibration device and an atmospheric calibration system for an oxygen sensor, and the method comprises the steps: an obtainingstep: obtaining the state parameters of an engine cyclically recorded by a previous key under the condition that a starting command of a gas unit is received, wherein the state parameters comprise amisfire rate and/or a knocking rate; a determination step: determining that the oxygen sensor needs to be subjected to atmospheric calibration under the condition that the state parameter is greater than a corresponding predetermined threshold value; a control step: controlling a gas turbine unit to execute preset operation so that fresh air exists in a preset area around the oxygen sensor, controlling the oxygen sensor to be heated to a preset temperature so that the oxygen sensor is enabled to automatically conduct detection, and obtaining detection data, wherein the preset area is the areain the exhaust pipe; and a processing step: receiving the detection data, and determining a first correction coefficient according to the detection data. According to the method, the oxygen sensor does not need to be detached for atmospheric calibration, and labor cost and time cost are reduced.

Description

technical field [0001] The present application relates to the technical field of oxygen sensors, and in particular, relates to an atmospheric calibration method for an oxygen sensor, an atmospheric calibration device, a computer-readable storage medium, a processor, and an atmospheric calibration system. Background technique [0002] In the prior art, the general atmospheric calibration needs to remove the oxygen sensor from the exhaust pipe, place it in the atmosphere, then manually operate the software for atmospheric calibration, and then manually install the oxygen sensor back on the exhaust pipe after calibration, which is time-consuming and laborious , and it is often not noticed until the engine has serious problems after the oxygen sensor is severely distorted, and then the atmospheric calibration is performed, which will cause irreversible damage to the engine. [0003] There is an atmospheric calibration method for gasoline engines without removing the oxygen senso...

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Problems solved by technology

[0005] The main purpose of this application is to provide an atmospheric calibration method for an oxygen sensor, an atmospheric calibration device, a computer-readable storage med...

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