Pressure calibration and detection method for electronic pressure cooker

Abstract

The application discloses a pressure calibration and detection method for an electronic pressure cooker. A pressure cooker enters a pressure point recording mode; when the pressure inside the pressurecooker rises, a heating plate acting film deforms to adjust an iron core position of a pressure sensor, so that the iron core and a coil of the pressure sensor make displacement to change the inductance value; the variable of the inductance value is transformed into a corresponding frequency value by a conversion circuit; a processing chip records and stores information; when the pressure insidethe pressure cooker is being a pressure P1 and a pressure P2 respectively, the processing chip records corresponding frequency values H1 and H2 respectively; on the basis of the P1, P2, H1, and H2, apressure curve slope C is calculated, wherein the C meets a formula: C=|H2-H1|/(P2-P1); a frequency value X is collected in real time; when the X is larger than or equal to H1, the current pressure PXin the pressure cooker meets a formula: PX=[P1-(X-H1)/C]; and when the X is less than the H1, the current pressure PX in the pressure cooker meets a formula: PX=[P1+(H1-X)/C]. Therefore, the detection efficiency, detection accuracy and pressure cooker quality are improved.

Description

【Technical field】 [0001] The present application relates to the technical field of pressure cookers, in particular to a pressure calibration and detection method for electronic pressure cookers. 【Background technique】 [0002] The concept of high-pressure cooking satisfies the fast-paced lifestyle of modern society. In order to obtain better results and make pressure cookers safer, manufacturers have adopted a variety of methods to control and detect the pressure inside the cooker. [0003] The traditional pressure cooker internal pressure detection method usually uses a mechanical switch or mechanism to detect the pressure. When the pressure in the pot is greater than the design pressure, trigger the mechanical switch to disconnect or trigger the venting mechanism to vent the gas to ensure that the pressure in the pot reaches the balance with the design value. Such a method will lead to problems such as single working pressure and low detection accuracy. 【Content of inven...

AI Technical Summary

Problems solved by technology

[0003] The traditional pressure cooker internal pressure detection method usually uses a mechanical switch or mechanism to detect the pressure. When the pressure in the pot is greater than the design pressure, trigger the mechanical switch

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