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Washing machine door detection circuit and washing machine

A technology for detecting circuits and washing machines, which is applied in the electronic field and can solve problems such as single-point failure of circuits

Pending Publication Date: 2022-05-13
QINGDAO HAIER WASHING ELECTRIC APPLIANCES CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The application provides a washing machine door detection circuit and a washing machine, which are used to solve the problem of single-point failure of the circuit during the state detection process of the washing machine door

Method used

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  • Washing machine door detection circuit and washing machine
  • Washing machine door detection circuit and washing machine
  • Washing machine door detection circuit and washing machine

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0061] figure 2 A schematic structural diagram of a washing machine door detection circuit provided in Embodiment 1 of the present application, as shown in figure 2 As shown, the circuit includes: a door switch module 11, a control module 12 and a detection module 13; wherein,

[0062] Wherein, the door switch module 11 is connected with the first power supply and the control module 12, and is used to output the signal of the first power supply to the control module 12 when the door switch module 11 is closed;

[0063] The control module 12 includes a plurality of parallel control branches, wherein the control branch includes a first control switch 101, the first end of the first control switch is connected to the second power supply, and the first end of the first control switch in the control branch The two ends are connected to the first end of the first control switch in the adjacent control branch, the second end of the first control switch in the last control branch i...

Embodiment 2

[0069] image 3 A schematic structural diagram of a washing machine door detection circuit provided in Embodiment 2 of the present application, on the basis of any other embodiment, such as image 3 As shown, the door switch module 11 specifically includes:

[0070] The first door switch module 21, the first door switch module 21 includes: a door switch 201, a first impedance 202 and a second impedance 203;

[0071] The first end of the door switch 201 is connected to the third power supply, the second end of the door switch 201 is connected to the first end of the first impedance 202 and the first end of the second impedance 203; the second end of the first impedance 202 is connected to the control module 12 and ground, the second end of the second impedance 203 is grounded.

[0072] This embodiment will be described in detail in conjunction with specific application scenarios: the first door switch module 21 is a weak current switch, and the third power supply is a DC powe...

Embodiment 3

[0075] Figure 4 A schematic structural diagram of a washing machine door detection circuit provided in Embodiment 3 of the present application, on the basis of any other embodiment, such as Figure 4 As shown, the door switch module 11 specifically includes:

[0076] The second door switch module 31, the second door switch module 31 includes a door lock switch 301, a first optocoupler module 302 and a second optocoupler module 303;

[0077] The positive pole of the transmitter of the first optocoupler module 302 is connected to the live wire of the AC mains, the negative pole of the transmitter of the first optocoupler module 302 is connected to the positive pole of the transmitter of the second optocoupler module 303, and the negative pole of the transmitter of the second optocoupler module 303 is connected to the gate The first end of the lock switch 301 and the second end of the door lock switch 301 are connected to the AC mains ground wire;

[0078] The positive pole of...

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PUM

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Abstract

The invention provides a washing machine door detection circuit and a washing machine. The washing machine door detection circuit comprises a door switch module, a control module and a detection module. The door switch module is connected with the first power supply and the control module and is used for outputting a signal of the first power supply to the control module when the door switch module is closed; the control module comprises a plurality of control branches connected in parallel, each control branch comprises a first control switch, the first end of each first control switch is connected with a second power supply, the first control switches of the adjacent control branches are connected end to end, and the second end of the first control switch in the tail control branch is connected with the detection module; the first control branch is used for responding to a signal of the first power supply and controlling the corresponding first control switch to be switched on; the detection module is used for responding to a signal of the second power supply and outputting a first signal, and the first signal represents closing of the washing machine door. Through the design of a plurality of control branches connected in parallel, the problem of single-point failure of the circuit can be effectively prevented.

Description

technical field [0001] The application belongs to the field of electronic technology, and in particular relates to a washing machine door detection circuit and a washing machine. Background technique [0002] The strong electric door lock or door switch of the washing machine is an important part related to the safety of the washing machine. They will be turned on manually or automatically when the door of the washing machine is closed. Among them, the strong electric door lock usually refers to the safety device that needs to be connected to the AC mains, and the door switch usually refers to the safety device connected to the DC weak current. The state detection of the washing machine door is a key step to ensure the safety of the washing machine. , that is, when the strong electric door lock or door switch is turned on, the washing machine motor can work normally. [0003] However, in the existing washing machine door state detection scheme, if some components in the cir...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06F34/20D06F103/40
CPCD06F34/20D06F2103/40
Inventor 刘伟吕杨高秋英
Owner QINGDAO HAIER WASHING ELECTRIC APPLIANCES CO LTD