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Dishwasher cleanliness detection method based on relative dielectric constant

A relative permittivity, cleanliness detection technology, applied in the direction of washing machine/rinsing machine parts, material capacitors, etc. The effect of saving working time and being less susceptible to pollution

Inactive Publication Date: 2019-05-03
ZHEJIANG OUYI SMART KITCHEN CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention mainly solves the technical problems of high cost, easy to be polluted, and low-precision in the scheme of detecting the cleanliness of dishwashers existing in the prior art, and provides a low-cost, not easily polluted and affects the detection accuracy based on relative dielectric Constant Dishwasher Cleanliness Test Method

Method used

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  • Dishwasher cleanliness detection method based on relative dielectric constant
  • Dishwasher cleanliness detection method based on relative dielectric constant
  • Dishwasher cleanliness detection method based on relative dielectric constant

Examples

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Embodiment 1

[0029] Embodiment 1: a kind of method for detecting the cleanliness of a dishwasher based on the relative dielectric constant of the present embodiment comprises the following steps:

[0030] S01. When water flows through the water outlet of the dishwasher, the capacitance detection circuit 9 reads the detection signal of the first detection device 8 installed at the water outlet;

[0031] S02, the capacitance detection circuit sends the read detection signal to the operational amplifier 11;

[0032] S03, the operational amplifier sends the detection signal to the single-chip microcomputer 12 after amplifying the detection signal;

[0033] S04, the single-chip microcomputer calculates the relative permittivity ε of the medium between the electrode A and the electrode B of the first detection device according to the detection signal r ;

[0034] S05. If the relative permittivity ε r Within the standard range, it is judged that the water body at the outlet of the dishwasher i...

Embodiment 2

[0045]Embodiment 2: a kind of washing machine cleanliness detection method of the present embodiment comprises the following steps:

[0046] S01. When water flows through the water outlet of the dishwasher, the capacitance detection circuit reads the detection signal of the first detection device installed at the water outlet;

[0047] S02, the capacitance detection circuit sends the read detection signal to the operational amplifier;

[0048] S03, the operational amplifier sends the detection signal to the single-chip microcomputer after amplifying the detection signal;

[0049] S04, the single-chip microcomputer calculates the relative permittivity ε of the medium between the electrode A and the electrode B of the first detection device according to the detection signal r ;

[0050] S05. If the relative permittivity ε r Within the standard range, it is judged that the water body at the outlet of the dishwasher is clean water; if the relative dielectric constant ε r If it...

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Abstract

The invention discloses a dishwasher cleanliness detection method based on a relative dielectric constant. The method comprises steps that when the water flows out from a water outlet end of a dishwasher, a detection signal of a first detecting device installed at the water outlet end is read by a capacitance detecting circuit; the read detection signal is sent by the capacitance detecting circuitto an operational amplifier; the detection signal is amplified by the operational amplifier and sent to a single-chip microcomputer; a relative dielectric constant epsilonr of the medium between an electrode A and an electrode B of the first detecting device is calculated by the single-chip microcomputer according to the detection signal; if the relative dielectric constant epsilonr is within thestandard range, that the water at the water outlet end of the dishwasher is the clean water is determined, if the relative dielectric constant epsilonr is not within the standard range, that the water at the water outlet end of the dishwasher is the non-clean water is determined. The method is advantaged in that cost is low, influence of pollution on detection accuracy is avoided, and the methodis suitable for all kinds of dishwashers.

Description

technical field [0001] The invention relates to the field of dishwashers, in particular to a method for detecting the cleanliness of dishwashers based on relative dielectric constant. Background technique [0002] A dishwasher is a device that automatically cleans tableware such as bowls, chopsticks, plates, plates, knives, and forks. During the cleaning process, accurately judging whether the tableware is rinsed clean can save water, electricity and time. The existing solution is generally to detect the turbidity of the flushing water through a liquid turbidity detector. The turbidity detector uses the scattered light reflected to the detector to detect the particles in the liquid, but this method is difficult to make light source and detector If there is no consistency, calibration is required, and if the lens is contaminated, the test results will also be affected. At the same time, different ambient temperatures will affect the emission and reception of the light source...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N27/22A47L15/42
Inventor 胡正军陈曙光方志明
Owner ZHEJIANG OUYI SMART KITCHEN CO LTD
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