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Washing machine computer control plate with double-plate structure

A technology of computer control panel and washing machine, which is applied to the control device of washing machine, washing device, electric digital data processing, etc. It can solve the problems of increased design difficulty, increased failure rate, and increased failure rate of the whole board, so as to reduce the difficulty of design , Reduce the failure rate, reduce the effect of maintenance costs

Active Publication Date: 2007-09-12
HAIER GRP CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] 1) Most of the easily damaged parts on the board are the display part, and the entire computer board has to be replaced only due to the damage of the display part, which increases the maintenance cost;
[0004] 2) The circuit design is complicated, because the driving part circuit is a strong current circuit, and the button display detection circuit is generally a weak current circuit, designing the strong current and weak current on one board increases unsafe factors and increases the failure rate;
[0005] 3) The complexity of circuit design is also reflected in: due to the limitation of the size of the computer board, all components are designed on one board, which greatly increases the difficulty of design, and the consideration of electrical parameters for device placement and wiring is much more complicated;
[0006] 4) The failure rate increases, because more components and devices are on one board, which increases the failure rate of the entire board

Method used

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  • Washing machine computer control plate with double-plate structure
  • Washing machine computer control plate with double-plate structure
  • Washing machine computer control plate with double-plate structure

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0052] This embodiment is a simple method of splitting into two, and its structure is shown in Figures 2 and 3, and the two computer boards are all connected by cables for data exchange. The essence is that the two single-chip microcomputers originally located on one circuit board are arranged on two circuit boards according to the above-mentioned distribution. The connection relationship between the two single-chip microcomputers remains unchanged, but an interface is respectively set on the two computer boards, which is called a standard interface.

[0053] It can be seen from Fig. 2 that among the two computer boards, one of the boards is a display board, which includes a button part, a detection part and a display part, and displays and executes most of the laundry process processing procedures and detection part signals; the other board is a driver The board is used for load driving and partial signal detection, and corresponding connection interfaces are respectively pro...

Embodiment 2

[0073] This embodiment is a circuit diagram of a washing machine computer control board with a serial communication interface mode and a double-board structure. Its structure is shown in Figure 4, and its characteristic lies in "adopting the interface mode of serial communication" for data exchange. This method uses the standard "serial asynchronous communication interface (UART)" on the microcontroller.

[0074] The circuit connection of the interface mode of the serial communication that is located on the two computer boards includes: the connection of the interface on the display board and the single-chip microcomputer on the display board: the connection of the interface on the driver board and the single-chip microcomputer on the driver board: the driver The connection between the interface on the board and the interface on the display board; where:

[0075] The connection between the single-chip microcomputer on the display board and the interface on the display board i...

Embodiment 3

[0079] The utility model also provides a washing machine computer control panel with a double-board structure in pulse communication mode, the circuit structure of which is shown in Figure 5 .

[0080] The described circuit connection of the pulse communication mode located on the two computer boards comprises: the connection of the interface on the display board and the single-chip microcomputer on the display board: the connection of the interface on the driver board and the single-chip microcomputer on the driver board: the connection of the interface on the driver board The connection of the interface with the interface on the display board; where:

[0081] The connection between the MCU on the display board and the interface on the display board is the same as the connection between the MCU on the driver board and the interface on the driver board. The VCC on the VDD interface on the MCU is the positive power supply; the ground terminal GDN on the MCU is used as the negati...

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Abstract

This invention relates to a computer controlling board of a washing machine including two computer boards, in which, a cable connection mode is applied between the two boards for data exchange, the drive and supply are designed on the control board while the weak electric part of key display and detection is designed on the display board and the two are connected by a cable.

Description

technical field [0001] The invention relates to a washing machine control circuit, in particular to a washing machine computer control board with a double-board structure. Background technique [0002] The computer board circuit structure of existing microcomputer-controlled washing machine is as shown in Figure 1, is that circuits such as all keys, display, drive, detection are all designed on a board. Although this structure is simple for the whole machine, there are many problems, such as: [0003] 1) Most of the easily damaged parts on the board are the display part, and the entire computer board has to be replaced only due to the damage of the display part, which increases the maintenance cost; [0004] 2) The circuit design is complicated, because the driving part circuit is a strong current circuit, and the button display detection circuit is generally a weak current circuit, designing the strong current and weak current on one board increases unsafe factors and incr...

Claims

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Application Information

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IPC IPC(8): D06F33/02G06F13/00G06F19/00
Inventor 许升张惠玉徐忠朝高秋英
Owner HAIER GRP CORP
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