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A control method of oxygen sensor for cooking apparatus

A technology of oxygen sensor and cooking equipment, which is applied in the direction of electrical components, electric heating devices, etc., can solve the problems of oxygen sensor without constant temperature control, affecting the use of users, and large changes in ambient temperature, so as to achieve the effect of ensuring accuracy

Pending Publication Date: 2021-01-12
VATTI CORP LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Under this premise, the general steam oven with humidity control for steaming and baking is implemented. The humidity sensor includes humidity sensitive capacitor, humidity sensitive resistor, oxygen sensor, etc., and the oxygen sensor is used for its resistance to harsh environments and high measurement accuracy. The humidity of the steamer is detected and the humidity is controlled to achieve the best cooking effect. The ambient temperature of the steamer varies greatly. If the oxygen sensor is used in a temperature with a large environmental change, the measurement result of the oxygen sensor will be inaccurate and affect the user's use.
The existing oxygen sensor has no constant temperature control, and the method of hardware is used to adjust the parameters, which is not conducive to mass production, and the cost is high

Method used

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  • A control method of oxygen sensor for cooking apparatus
  • A control method of oxygen sensor for cooking apparatus
  • A control method of oxygen sensor for cooking apparatus

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] see figure 1 A control method for an oxygen sensor of a cooking device is shown, the oxygen sensor is arranged on the inner cavity of the cooking device, and a heating resistor is arranged on the oxygen sensor, and the control method includes the following steps:

[0037] Step S1, setting the target temperature value of the heating resistor, and controlling the heating resistor to work;

[0038] Step S2, collecting the real-time voltage and real-time current of the heating resistor, and obtaining the real-time resistance value of the heating resistor according to the real-time voltage and real-time current;

[0039] Step S3, obtaining the target resistance value of the heating resistor according to the target temperature value;

[0040] Step S4, adjusting the heating power of the heating resistor so that the real-time resistance value of the heating resistor changes to the target resistance value;

[0041] Step S5, judging whether the real-time resistance value of the...

Embodiment 2

[0055] Such as figure 2 , after step S6 controls the heating resistor to maintain the current working state, it also includes the following steps:

[0056] Step S7, detecting whether the real-time resistance of the heating resistor deviates from the target resistance;

[0057] If the real-time resistance of the heating resistor deviates from the target resistance value, return to step S4 to adjust the heating power of the heating resistor so that the real-time resistance value of the heating resistor changes to the target resistance value; if the real-time resistance of the heating resistor does not deviate from the target resistance value, then Return to step S6.

[0058] When the working environment or other factors cause the real-time resistance of the heating resistor to deviate from the target resistance, which means that the temperature of the heating resistor deviates from the target temperature value, it is necessary to adjust the heating power of the heating resisto...

Embodiment 3

[0064] Such as image 3 After step S6 controls the heating resistor to maintain the current working state, it also includes the following steps:

[0065] Step S61, setting the initial voltage U of the oxygen sensor 0 ;

[0066] Step S62, adjust the voltage of the oxygen sensor, the adjusted voltage of the oxygen sensor is the current voltage U 1 , where U 1 Less than the maximum voltage U of the oxygen sensor max ;

[0067] Step S63, collecting the current voltage U of the oxygen sensor 1 The current current I corresponding to 1 ;

[0068] Step S64, continue to adjust the voltage of the oxygen sensor, the adjusted voltage of the oxygen sensor is the working voltage U 2 , where U 2 Less than the maximum voltage U of the oxygen sensor max ;

[0069] Step S65, collect the oxygen sensor at the working voltage U 2 Under the corresponding working current I 2 ;

[0070] Step S66, judging the operating current I 2 Is it equal to the current current I 1 ;

[0071] If y...

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Abstract

The invention provides a control method of an oxygen sensor for cooking equipment, the oxygen sensor is arranged on an inner cavity of the cooking equipment, the control method is characterized in that a heating resistor is arranged on the oxygen sensor, and the control method comprises the following steps: setting a target temperature value of the heating resistor, and controlling the heating resistor to work; acquiring real-time voltage and real-time current of the heating resistor, and acquiring a real-time resistance value of the heating resistor according to the real-time voltage and thereal-time current; obtaining a target resistance value of the heating resistor according to the target temperature value; adjusting the heating power of the heating resistor to enable the real-time resistance value of the heating resistor to change to the target resistance value; judging whether the real-time resistance value of the heating resistor reaches a target resistance value or not; if so,controlling the heating resistor to maintain the current working state; and if not, continuing to adjust the heating power of the heating resistor. The oxygen sensor is subjected to constant-temperature control, so that the measurement of the oxygen sensor is not influenced by temperature, and the measurement accuracy of the oxygen sensor is ensured.

Description

technical field [0001] The invention relates to the technical field of cooking equipment, in particular to a control method for an oxygen sensor of cooking equipment. Background technique [0002] With the increasing popularity of steam ovens, people have developed from simple functional requirements to more advanced functions, and put forward higher requirements for the quality of cooking. Under this premise, the general steam oven with humidity control for steaming and baking is implemented. The humidity sensor includes humidity sensitive capacitor, humidity sensitive resistor, oxygen sensor, etc., and the oxygen sensor is used for its resistance to harsh environments and high measurement accuracy. The humidity of the steamer is detected and the humidity is controlled to achieve the best cooking effect. The ambient temperature of the steamer varies greatly. If the oxygen sensor is used in a temperature with a large environmental change, the measurement result of the oxygen...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H05B1/02
CPCH05B1/0263
Inventor 刘明雄潘叶江
Owner VATTI CORP LTD
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