Control system of primary-secondary double-tub washing machine

Abstract

The utility model provides a primary-secondary double-tub washing machine control system, which is applied to the technical field of washing machine control, and comprises a main control board and two key display boards, a main control circuit is configured on the main control board and is respectively connected with a secondary tub control module and a primary tub control module; each of the secondary barrel control module and the primary barrel control module comprises a water level detection circuit, a temperature detection circuit, a display panel communication circuit, a door switch and a barrel collision detection circuit; the water level detection circuit is used for detecting the water level in the secondary barrel or the primary barrel; the temperature detection circuit is used for detecting the water temperature in the secondary barrel or the primary barrel; the display panel communication circuit is used for being connected with a key display panel of the child barrel or the mother barrel, and interaction between the main control circuit and a user is achieved. And the door switch and the barrel collision detection circuit are used for detecting the states of the safety switch and the door collision detection circuit of the secondary barrel or the primary barrel. The master-slave dual-barrel control is realized through the master control board and the two key display boards, and the master control circuit is utilized to independently control the slave barrel and the master barrel, so that mutual interference of the dual barrels during operation is avoided.

Description

Technical Field

[0001] The utility model belongs to the technical field of washing machine control, and in particular relates to a control system for a mother-and-child double-tub washing machine. Background Art

[0002] A twin-barrel washing machine refers to a washing machine with an outer shell and two inner barrels. There are currently two types of twin-barrel washing machines: the traditional twin-barrel washing machine is a semi-automatic washing machine consisting of a washing barrel and a dehydrating barrel. Users need to manually fill and drain the water. After washing, the clothes need to be manually placed in the dehydrating barrel for dehydration. Users need to observe the status of the washing machine at all times and intervene in the next process, which is inconvenient to use. Another type of twin-barrel washing machine is an upper drum, lower impeller structure or a duplex structure of one small and one large drum. The upper drum, lower impeller structure and the duplex structure of one small and one large drum are both large-capacity washing machines with relatively high prices. For single underwear or small baby clothes, this type of washing machine is "overkill".

[0003] In order to realize fully automatic washing of classified clothes, it is urgent to propose a control system for a double-tub washing machine for controlling the double-tub washing machine. Utility Model Content

[0004] In view of the above-mentioned problems in the prior art, the purpose of the utility model is to provide a control system for a mother-and-child twin-tub washing machine, which realizes mother-and-child twin-tub control through a main control panel and two button display panels, and uses a main control circuit to separately control the child tub and the mother tub to avoid mutual interference during the operation of the twin tubs.

[0005] A control system for a mother-child double-barrel washing machine comprises a main control panel and two key display panels, wherein the two key display panels are respectively used to realize human-computer interaction between a child barrel and a mother barrel, wherein a main control circuit is arranged on the main control panel, and the main control circuit is respectively connected to a child barrel control module and a mother barrel control module, wherein the child barrel control module and the mother barrel control module both comprise a water level detection circuit, a temperature detection circuit, a display panel communication circuit, and a door switch and a barrel collision detection circuit, wherein the water level detection circuit is used to detect the water level in the child barrel or the mother barrel; the temperature detection circuit is used to detect the water temperature in the child barrel or the mother barrel; the display panel communication circuit is used to connect the key display panels of the child barrel or the mother barrel to realize interaction between the main control circuit and the user; the door switch and barrel collision detection circuit are used to detect the status of the safety switch and the door collision detection circuit of the child barrel or the mother barrel.

[0006] Preferably, the sub-barrel control module and the mother barrel control module further include an output control circuit for controlling the motor, water inlet valve, water drain valve and water heater of the sub-barrel or mother barrel.

[0007] Preferably, the sub-tub control module or the main tub control module further includes a heating control circuit for drying clothes, and the heating control circuit includes a drying heating circuit, a drying temperature detection circuit and a fan control circuit.

[0008] Preferably, the main control circuit is also electrically connected to a power conversion circuit and a buzzer, wherein the power conversion circuit is used to provide corresponding power supply voltages to each circuit, and the buzzer is used to emit a prompt sound at an appropriate time.

[0009] The beneficial effects of the utility model are as follows: the control system of the mother-child double-tub washing machine realizes the control of the mother-child double-tub through a main control board and two button display boards, and uses a main control circuit to independently control the sub-tub and the mother tub to avoid mutual interference when the double tubs are running.

[0010] The two barrels are controlled to operate independently through a main control board, which can reduce equipment costs while ensuring the operation of the two barrels. The sub-barrel and the main barrel are respectively provided with a sub-barrel control module and a main barrel control module, so that the sub-barrel control module and the main barrel control module can realize the basic functions of a fully automatic washing machine and perform washing and dehydration operations. Compared with the double-barrel washing machine structure of a semi-automatic washing machine consisting of a washing barrel and a dehydration barrel, the washing machine controlled by this control system is more convenient and quick to use.

[0011] The double-drum design enables classified washing of clothes, especially baby clothes and underwear which require special attention to hygiene. Using different inner drums for washing helps ensure personal hygiene.

[0012] The sub-tub control module or the main tub control module also includes a heating control circuit for drying clothes. When clothes need to be dried, a tub with a heating control circuit can be selected for washing, which can achieve continuous operations of washing, dehydration and drying. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0014] Figure 1 It is a circuit connection block diagram of the utility model;

[0015] Figure 2 It is a system block diagram of the utility model;

[0016] Figure 3 It is a schematic diagram of a circuit board of the utility model;

[0017] Figure 4 It is a circuit diagram of the power supply circuit of the utility model;

[0018] Figure 5 It is a structural schematic diagram of the output control circuit of the utility model;

[0019] Figure 6 It is a structural schematic diagram of the water level detection circuit of the utility model;

[0020] Figure 7 It is a schematic diagram of the structure of the door switch and barrel collision detection circuit of the utility model;

[0021] Figure 8 It is a structural schematic diagram of the display board communication circuit of the utility model;

[0022] Fig. 9 It is a structural schematic diagram of a heating control circuit of the utility model;

[0023] Fig.10 It is a structural schematic diagram of a buzzer of the utility model. DETAILED DESCRIPTION

[0024] Embodiment 1

[0025] like Figure 1 , Figure 2 As shown, a control system for a mother-child dual-drum washing machine includes a main control panel and two button display panels. The two button display panels are respectively used to realize human-computer interaction of the child drum or the mother drum. The two button display panels are respectively installed on the machine covers of the child drum and the mother drum. The button display panels include buttons for user operation, corresponding indicator lights and display panels. When in use, the user can adjust the parameters of the corresponding drum according to actual needs through buttons, or switch the status of the corresponding drum through buttons.

[0026] like Figure 1 As shown, a main control circuit is configured on the main control board, and the main control circuit includes a main control chip with a communication pin. In this embodiment, the model of the main control chip is MM32SPIN0280DAP. The main control chip can detect the input signal parameters of the sub-barrel and the mother barrel in real time, and control the output load of the two barrels according to the input signal and the user's key operation. The input and output signals are independent of each other, and the two barrels can be independently controlled by one main control chip.

[0027] Please refer to Figure 2 , wherein the key display panel communicates with the main control panel via UART, and the main control panel receives input signals and outputs corresponding output signals to corresponding devices. Specifically, the input signals include water level detection signals generated by the water level sensor, temperature signals generated by the temperature sensor, door switch signals generated by the safety switch, and barrel bump detection signals generated by the barrel bump switch. The output signals include control signals for controlling the water heater, control signals for controlling the water inlet valve and the drain valve, and drive signals for the drive motor.

[0028] Specifically, the sub-tub and the main tub are respectively equipped with a water inlet valve, a drain valve, a forward and reverse motor and a water heater to realize the basic functions of the automatic washing machine. Therefore, the sub-tub control module and the main tub control module also include an output control circuit for controlling the motor, the water inlet valve, the drain valve and the water heater of the sub-tub or the main tub. In a specific embodiment, the output control circuit adopts the following method: Figure 5 The circuit shown is implemented.

[0029] Please refer to Figure 1 , Figure 3 As shown, the main control circuit is connected to the sub-barrel control module and the main barrel control module respectively. The sub-barrel control module and the main barrel control module both include a water level detection circuit, a temperature detection circuit, a display board communication circuit, a door switch, and a barrel collision detection circuit. Among them, the water level detection circuit is used to detect the water level in the sub-barrel or the main barrel. In a specific embodiment, the water level detection circuit adopts the following method: Figure 6 The circuit shown is implemented.

[0030] The temperature detection circuit is used to detect the water temperature in the sub-barrel or the main barrel. The temperature detection circuit mainly includes a temperature sensor for detecting the temperature. The water temperature is detected through the detection principle of the temperature sensor in the prior art, which facilitates the intelligent control of heating washing.

[0031] The display panel communication circuit is used to connect the key display panel of the sub-barrel or the main barrel. In a specific embodiment, the display panel communication circuit adopts the following method: Figure 3 ,like Figure 8 The main control chip receives key signals through RXD1 and RXD2 to obtain user operations, and then sends display data through TXD1 and TXD2 to respond to the display logic corresponding to the key operations to realize the interaction between the main control circuit and the user.

[0032] The door switch and barrel collision detection circuit are used to detect the status of the safety switch and door collision detection circuit of the sub-barrel or the main barrel. In a specific embodiment, the door switch and barrel collision detection circuit adopts the following Figure 7 The circuit shown is implemented.

[0033] like Figure 3 , Figure 4 , Fig.10 As shown, the main control circuit is also electrically connected to the power conversion circuit and the buzzer, wherein the power conversion circuit is used to provide corresponding power supply voltages to each circuit, specifically, 5V and 12V power supply voltages. The buzzer is used to issue prompt sounds in a timely manner, to provide key operation prompts or to remind the user that the clothes have been washed.

[0034] Embodiment 2

[0035] like Figure 1 , Figure 2 , Figure 3and Fig. 9 As shown, the structure of this embodiment is basically the same as that of the first embodiment, except that: the sub-tub control module or the main tub control module in this embodiment also includes a heating control circuit for drying clothes, and the heating control circuit includes a drying heating circuit, a drying temperature detection circuit and a fan control circuit. The time, temperature and other parameters of the drying operation are adjusted through the key display panel, and the drying temperature sensor is used to transmit the drying temperature signal to the main control board, and then the control signal is transmitted to the drying heater and the drying fan through the main control board. The real-time detection of the drying temperature sensor is used to realize the real-time control of the drying heater and the drying fan.

[0036] Working principle: When the control system of the mother-child double-barrel washing machine is used, after the washing machine is powered on, the power button on the key display panel is used to turn on the machine, and the program, temperature or drying time are selected respectively, and then the operation is started by pressing the start button. If the RXD1 module of the main control chip receives a key signal, the user is operating the key display panel of the mother barrel, and the main control chip responds to the key command to control the operation of the mother barrel. If the RXD2 module of the main control chip receives a key signal, the user is operating the sub-barrel panel, and the main control chip responds to the key command to control the operation of the sub-barrel. One key display panel can be operated separately, or two key display panels can be operated simultaneously, that is, the control system can make one barrel run separately, or two barrels run simultaneously.

[0037] The above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A control system for a double-tub washing machine, characterized in that: It includes a main control board and two key display boards, the two key display boards are respectively used to realize human-computer interaction of the sub-barrel and the mother barrel, the main control board is configured with a main control circuit, the main control circuit is respectively connected to the sub-barrel control module and the mother barrel control module, the sub-barrel control module and the mother barrel control module both include a water level detection circuit, a temperature detection circuit, a display board communication circuit and a door switch and a barrel collision detection circuit, wherein the water level detection circuit is used for water level detection in the sub-barrel or the mother barrel; the temperature detection circuit is used for water temperature detection in the sub-barrel or the mother barrel; the display board communication circuit is used to connect the key display board of the sub-barrel or the mother barrel to realize the interaction between the main control circuit and the user; the door switch and barrel collision detection circuit are used to detect the status of the safety switch and the door collision detection circuit of the sub-barrel or the mother barrel.

2. The control system of the double-tub washing machine according to claim 1, characterized in that: The sub-barrel control module and the main barrel control module also include an output control circuit for controlling the motor, water inlet valve, water drain valve and water heater of the sub-barrel or the main barrel.

3. The control system of the double-tub washing machine according to claim 1, characterized in that: The sub-tub control module or the main tub control module also includes a heating control circuit for drying clothes, and the heating control circuit includes a drying heating circuit, a drying temperature detection circuit and a fan control circuit.

4. The control system of the double-tub washing machine according to claim 1, characterized in that: The main control circuit is also electrically connected to a power conversion circuit and a buzzer. The power conversion circuit is used to provide corresponding power supply voltages to each circuit, and the buzzer is used to issue a prompt sound at an appropriate time.

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