Time-sharing multiplexing circuit board and washing machine

Abstract

The application discloses a time-division multiplexing circuit board and a washing machine. The time-division multiplexing circuit board comprises a display module, a driving module, a key module and a control module. The second connection ends of the same segment of light-emitting diodes corresponding to different nixie tubes in the display module are connected with each other to form a non-common end. The second level output port of the control module is connected with the non-common end one by one. The fourth connection end of a key assembly in the key module is connected with the second output end of the key module. The second output end is connected with the first key scanning port of the control module. The fifth connection end of the key assembly is connected with the third output end of the key module. The third output end is connected with the second key scanning port. The common end of the nixie tube is connected with the first output end of the driving module one by one. The first input end is connected with the first level output port of the control module one by one. The second input end of the key module is connected with the first level output port one by one. The multifunctionalization of the IO port of the control module is realized, and the hardware resources are saved.

Description

Technical Field

[0001] This invention relates to the field of electronic technology, and in particular to a time-division multiplexing circuit board and a washing machine. Background Technology

[0002] In existing technologies, the touch functionality of washing machines is primarily implemented through capacitive touch panels or mechanical buttons. When the touch function is implemented via mechanical buttons, one I / O (Input / Output) port of the control module can only control one button. Furthermore, the display function of washing machines is generally implemented through digital tubes, and in the circuit implementing the display function, one I / O port of the control module can only control one digital tube. Moreover, the circuit implementing the washing machine's display function and the circuit implementing the touch function are independent of each other. In other words, one I / O port of the control module can only control one button or one digital tube, resulting in a limited functionality of the I / O port and a waste of hardware resources. Summary of the Invention

[0003] The following is an overview of the subject matter described in detail herein. This overview is not intended to limit the scope of the claims.

[0004] This invention provides a time-division multiplexing circuit board and a washing machine, which can realize the multi-functionality of the I / O ports of the control module, while saving hardware resources.

[0005] In a first aspect, embodiments of the present invention provide a time-sharing multiplexing circuit board disposed in a washing machine, the time-sharing multiplexing circuit board comprising:

[0006] The display module includes multiple digital tubes, each digital tube including multiple segments of light-emitting diodes (LEDs). Each LED includes a first connection terminal and a second connection terminal. All the first connection terminals of the same digital tube are interconnected to form a common terminal, and the second connection terminals of the same segment of LEDs corresponding to different digital tubes are interconnected to form a non-common terminal.

[0007] The driving module includes multiple first input terminals and multiple first output terminals, wherein the common terminal is connected to each of the first output terminals;

[0008] The button module includes a second output terminal, a third output terminal, multiple second input terminals, and multiple button components. The second input terminals are connected to the third connection terminals of the button components one by one. The fourth connection terminals of each button component are connected to the second output terminal, and the fifth connection terminals of each button component are connected to the third output terminal.

[0009] The control module includes multiple first-level output ports, multiple second-level output ports, a first key scanning port, and a second key scanning port. The first input terminal is connected to each of the first-level output ports, the second input terminal is connected to each of the first-level output ports, the first key scanning port is connected to the second output terminal, the second key scanning port is connected to the third output terminal, and the second-level output port is connected to each of the non-common terminals.

[0010] The technical solution of the first aspect of the present invention has at least one of the following advantages or beneficial effects: by connecting the second connection terminals of the same segment of light-emitting diodes corresponding to different digital tubes to form a non-common terminal, and connecting the second level output port of the control module to the non-common terminal of the display module one by one, each second level output port of the control module can simultaneously control all digital tubes in the display module; similarly, by connecting the fourth connection terminal of each button component to the second output terminal of the button module, and the second output terminal to the first button scanning port of the control module, the first button scanning port of the control module can control all button components; by connecting the fifth connection terminal of each button component to the third output terminal of the button module...

[0011] The third output terminal is connected to the second key scanning port of the control module. Each second key scanning port of the control module can control all key components. Furthermore, by connecting the common terminal of the digital tube to the first output terminal of the driver module, the first input terminal of the driver module to the first level output port of the control module, and the second input terminal of the key module to the first level output port, a single first level output port of the control module can simultaneously control both the key modules and the digital tubes. In other words, in this embodiment, one I / O port of the control module can control multiple digital tubes and multiple key components, or simultaneously control both digital tubes and key components. Therefore, this embodiment achieves multi-functionality of the I / O ports of the control module while saving hardware resources.

[0012] Optionally, in one embodiment of the present invention, the button assembly includes a first button and a second button, the first button being connected between the third connection terminal and the fourth connection terminal, and the second button being connected between the third connection terminal and the fifth connection terminal.

[0013] Optionally, in one embodiment of the present invention, the display module includes a plurality of equivalent circuits, the sixth connection terminal of the equivalent circuit is connected to the second level output port one by one, and the seventh connection terminal of the equivalent circuit is connected to the non-common terminal of the digital tube one by one.

[0014] Optionally, in one embodiment of the present invention, the time-division multiplexing circuit board further includes a water level detection circuit, which is connected to the control module.

[0015] Optionally, in one embodiment of the present invention, the time-division multiplexing circuit board further includes an automatic dispensing detection module, which is connected to the control module and is used to automatically dispense detergent and fabric softener in corresponding amounts according to the weight of the clothes in the washing machine.

[0016] Optionally, in one embodiment of the present invention, the time-division multiplexing circuit board further includes a buzzer module, which is connected to the drive module.

[0017] Optionally, in one embodiment of the present invention, the driving module further includes a third input terminal and a fourth output terminal, the control module includes a buzzer control port, the buzzer module includes a fourth input terminal, the buzzer control port is connected to the third input terminal, and the fourth output terminal is connected to the fourth input terminal.

[0018] Optionally, in one embodiment of the present invention, the time-division multiplexing circuit board further includes a lamp circuit, which is connected to the driving module.

[0019] Optionally, in one embodiment of the present invention, the lamp circuit includes a fifth input terminal, the driving module includes a fifth output terminal and a sixth input terminal, the control module includes a lamp control port, the lamp control port is connected to the sixth input terminal, and the fifth output terminal is connected to the fifth input terminal.

[0020] Secondly, embodiments of the present invention provide a washing machine, including a time-division multiplexing circuit board as described above.

[0021] Other features and advantages of the invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. The objects and other advantages of the invention may be realized and obtained by means of the structures particularly pointed out in the description, claims, and drawings. Attached Figure Description

[0022] The accompanying drawings are provided to further understand the technical solutions of the present invention and constitute a part of the specification. They are used together with the embodiments of the present invention to explain the technical solutions of the present invention, and do not constitute a limitation on the technical solutions of the present invention.

[0023] Figure 1 This is a circuit schematic diagram of a time-division multiplexing circuit board provided in one embodiment of the present invention;

[0024] Figure 2This is a circuit schematic diagram of a control module provided in one embodiment of the present invention;

[0025] Figure 3 This is a circuit schematic diagram of a display module provided in one embodiment of the present invention;

[0026] Figure 4 This is a circuit schematic diagram of a driving module provided in one embodiment of the present invention;

[0027] Figure 5 This is a circuit schematic diagram of a button module provided in one embodiment of the present invention;

[0028] Figure 6 This is a schematic diagram of the current pulse waveform of the input current corresponding to the common terminal of the digital tube provided in an embodiment of the present invention;

[0029] Figure 7 This is a circuit diagram of a water level detection circuit provided in one embodiment of the present invention;

[0030] Figure 8 This is a circuit diagram of an automatic delivery detection module provided in one embodiment of the present invention;

[0031] Figure 9 This is a circuit schematic diagram of a buzzer module provided in one embodiment of the present invention;

[0032] Figure 10 This is a circuit diagram of a lamp tube module provided in one embodiment of the present invention. Detailed Implementation

[0033] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0034] In the description of this invention, it should be understood that the orientation descriptions, such as up, down, front, back, left, right, etc., are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting this invention.

[0035] In the description of this invention, "several" means one or more, "more than" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. The use of "first" and "second" in the description is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0036] In the description of this invention, unless otherwise explicitly defined, terms such as "set up," "install," and "connect" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this invention in conjunction with the specific content of the technical solution.

[0037] In existing technologies, the touch functionality of washing machines is primarily implemented through capacitive touch panels or mechanical buttons. When the touch function is implemented via mechanical buttons, one I / O (Input / Output) port of the control module can only control one button. Furthermore, the display function of washing machines is generally implemented through digital tubes, and in the circuit implementing the display function, one I / O port of the control module can only control one digital tube. Moreover, the circuits implementing the washing machine's display function and the circuits implementing the touch function are independent of each other. In other words, one I / O port of the control module can only control one button or one digital tube, resulting in a limited function of the I / O port and a waste of hardware resources. Moreover, when a large number of buttons are required to implement the washing machine's touch function, high-end chips are used, which undoubtedly increases the product's production cost significantly.

[0038] Based on this, in this embodiment, by interconnecting the second connection terminals of the same segment of light-emitting diodes corresponding to different digital tubes to form a non-common terminal, and by connecting the second level output port of the control module to the non-common terminal of the display module one by one, each second level output port of the control module can simultaneously control all digital tubes in the display module; similarly, by connecting the fourth connection terminal of each button component to the second output terminal of the button module, which is connected to the first button scanning port of the control module, the first button scanning port of the control module can control all button components; by connecting the fifth connection terminal of each button component to the third output terminal of the button module, which is connected to the second button scanning port of the control module, each second button scanning port of the control module can control all button components; moreover, by connecting the common terminal of the digital tube to the first output terminal of the driver module one by one, the first input terminal of the driver module to the first level output port of the control module one by one, and the second input terminal of the button module to the first level output port one by one, it is possible to realize that one first level output port of the control module can simultaneously control the button module and the digital tube. In other words, in this embodiment, one I / O port of the control module can control multiple digital tubes and multiple button components, or can control digital tubes and button components simultaneously. Therefore, this embodiment realizes the multi-functionality of the I / O port of the control module, while saving hardware resources and reducing product production costs.

[0039] The embodiments of the present invention will be further described below with reference to the accompanying drawings.

[0040] refer to Figure 1 An embodiment of the present invention provides a time-division multiplexing circuit board including a display module 200, a driving module 300, a button module 400 and a control module 100, wherein the display module 200, the driving module 300 and the button module 400 are all electrically connected to the control module 100, and the display module 200 and the driving module 300 are electrically connected.

[0041] The display module 200 includes multiple digital tubes, each digital tube including multiple segments of light-emitting diodes (LEDs). Each LED includes a first connection terminal and a second connection terminal. All the first connection terminals of the same digital tube are interconnected to form a common terminal, and the second connection terminals of the same segment of LEDs corresponding to different digital tubes are interconnected to form a non-common terminal. For example, suppose the display module 200 includes digital tube A and digital tube B. Both digital tube A and digital tube B are composed of light-emitting diodes a, b, c, d, e, f, g, and dp. Then, the first connection terminals of LEDs a, b, c, d, e, f, g, and dp in digital tube A are connected to form a common terminal. The second connection terminals of LEDs a and b in digital tube A and b in digital tube B are connected to form a non-common terminal. The second connection terminals of LEDs b in digital tube A and b in digital tube B are connected to form a non-common terminal, and so on, ultimately forming eight non-common terminals. No specific limitation is made here.

[0042] The driver module 300 includes multiple first input terminals and multiple first output terminals, with a common terminal connected to each of the first output terminals. The button module 400 includes a second output terminal, a third output terminal, multiple second input terminals, and multiple button components. Each second input terminal is connected to a third connection terminal of each button component, each fourth connection terminal of each button component is connected to a second output terminal, and each fifth connection terminal of each button component is connected to a third output terminal. The control module 100 includes multiple first-level output ports, multiple second-level output ports, a first button scanning port, and a second button scanning port. Each first input terminal is connected to a first-level output port, each second input terminal is connected to a first-level output port, each first button scanning port is connected to a second output terminal, each second button scanning port is connected to a third output terminal, and each second-level output port is connected to a non-common terminal.

[0043] In this embodiment, by interconnecting the second connection terminals of the same segment of LEDs corresponding to different digital tubes to form a non-common terminal, and by connecting the second level output port of the control module 100 to the non-common terminal of the display module 200 one by one, each second level output port of the control module 100 can simultaneously control all digital tubes in the display module 200; similarly, by connecting the fourth connection terminal of each button assembly to the second output terminal of the button module 400, and connecting the second output terminal to the first button scanning port of the control module 100, the first button scanning port of the control module 100 can control all button assemblies. The fifth connection terminal of each button assembly is connected to the third output terminal of the button module 400, and the third output terminal is connected to the second button scanning port of the control module 100. Each second button scanning port of the control module 100 can control all button assemblies. Furthermore, by connecting the common terminal of the digital tube to the first output terminal of the driver module 300, connecting the first input terminal of the driver module 300 to the first level output port, and connecting the second input terminal of the button module 400 to the first level output port of the control module 100, one first level output port of the control module 100 can simultaneously control both the button module 400 and the digital tube. In other words, in this embodiment, one I / O port of the control module 100 can control multiple digital tubes and multiple button assemblies, or can simultaneously control both digital tubes and button assemblies. Therefore, this embodiment achieves multi-functionality of the I / O port of the control module 100 while saving hardware resources.

[0044] In one feasible implementation, the number of digital tubes can be 2, 4, 8, or more. Additionally, the number of light-emitting diodes (LEDs) in the digital tube can be 7 or 8 segments, etc. An 8-segment digital tube has one more LED for displaying the decimal point than a 7-segment digital tube; however, no specific limitation is made here.

[0045] It should be noted that the polarity of the first connection terminal of the light-emitting diode in the digital tube can be either cathode or anode. When the polarity of the first connection terminal is cathode, the digital tube in which all the first connection terminals are connected to form a common terminal is called a common cathode digital tube; similarly, when the polarity of the first connection terminal is anode, the digital tube in which all the first connection terminals are connected to form a common terminal is called a common anode digital tube.

[0046] It should be noted that the number of second input terminals is equal to the number of button components.

[0047] In one embodiment, the button assembly includes a first button and a second button, the first button being connected between a third connection terminal and a fourth connection terminal, and the second button being connected between a third connection terminal and a fifth connection terminal.

[0048] In this embodiment, when the control module 100 drives a certain digital tube in the display module 200 to display via the driver module 300, the first level output port corresponding to that digital tube in the control module 100 needs to output a high level. This high level is then input to the first connection terminal of the digital tube in the display module 200 via the driver module 300. Simultaneously, the input voltage of the first key scanning port and the second key scanning port in the control module 100 are scanned to determine whether the first and second keys corresponding to the key assembly are pressed. If the first key scanning port is high, the first key is pressed; if the second key scanning port is high, the second key is pressed. Furthermore, the common terminal of each digital tube is enabled in turn, not simultaneously. Therefore, enabling the common terminal of each digital tube in turn ensures that only one digit of the digital tube is lit at any given time. By setting different level combinations for the non-common terminals when the common terminal of each digital tube is enabled, the effect of each digital tube displaying different numbers can be achieved. Moreover, because the interval between the digital tubes lighting up in turn is very short, within a few milliseconds, the function of simultaneous key scanning can be almost realized.

[0049] It should be noted that if you need to light up an LED, you can apply a high level to the anode and a low level to the cathode.

[0050] Specifically, refer to Figures 2 to 5 The display module 200 includes four digital tubes, each containing seven light-emitting diodes (LEDs). Each LED has a first connection terminal and a second connection terminal. All the first connection terminals of the same digital tube are interconnected to form a common terminal, thus obtaining the first common terminal COM1, the second common terminal COM2, the third common terminal COM4, ​​and the fourth common terminal COM5. The second connection terminals of the same LEDs corresponding to different digital tubes are interconnected to form non-common terminals, thus obtaining the first non-common terminal SEG1, the second non-common terminal SEG2, the third non-common terminal SEG3, the fourth non-common terminal SEG4, the fifth non-common terminal SEG5, the sixth non-common terminal SEG6, and the seventh non-common terminal SEG7.

[0051] The driver module 300 includes multiple first input terminals and multiple first output terminals, namely P1, P2, P3 and P4; and multiple first input terminals, namely B1, B2, B3 and B4. The first common terminal COM1 is connected to P1, the second common terminal COM2 is connected to P2, the third common terminal COM4 is connected to P3, and the fourth common terminal COM5 is connected to P4.

[0052] The control module 100 includes multiple first-level output ports, multiple second-level output ports, a first key scan port, and a second key scan port. The multiple first-level output ports are designated T1, T2, T3, and T4, with T1 connected to B1, T2 connected to B2, T3 connected to B3, and T4 connected to B4. The multiple second-level output ports are designated K1, K2, K3, K4, K5, K6, and K7, with the first non-common terminal SEG1 connected to K1, the second non-common terminal SEG2 connected to K2, the third non-common terminal SEG3 connected to K3, the fourth non-common terminal SEG4 connected to K4, the fifth non-common terminal SEG5 connected to K5, the sixth non-common terminal SEG6 connected to K6, and the seventh non-common terminal SEG7 connected to K7.

[0053] The button module 400 includes a second output terminal, a third output terminal, three second input terminals, and three button components. The three second input terminals are Y1, Y2, and Y3, and the three button components are a first button component, a second button component, and a third button component. The first button component includes a first button SW1 and a second button SW2, the second button component includes a first button SW3 and a second button SW4, and the third button component includes a first button SW5 and a second button SW6. Y1 is connected to the third connection terminal of the first button component, Y2 is connected to the third connection terminal of the second button component, and Y3 is connected to the third connection terminal of the third button component. The fourth connection terminal of each button component is connected to the second output terminal KEY1, and the fifth connection terminal of each button component is connected to the third output terminal KEY2.

[0054] In addition, Y1 is connected to T1, Y2 is connected to T2, and Y3 is connected to T3. The first key scanning port ANI1 of the control module 100 is connected to the second output terminal KEY1, and the second key scanning port ANI2 of the control module 100 is connected to the second output terminal KEY2.

[0055] In this embodiment, when the control module 100 drives the first digital tube display through the driver module 300, it needs to output a high level to T1. Simultaneously, it scans the input voltage of the first key scanning port ANI1 of the control module 100 to determine whether the first key SW1 is pressed, and scans the input voltage of the second key scanning port ANI2 of the control module 100 to determine whether the second key SW2 is pressed. If the first key scanning port ANI1 is high, it indicates that the first key SW1 is pressed; if the second key scanning port ANI2 is high, it indicates that the second key SW2 is pressed.

[0056] Similarly, when the control module 100 drives the second digital tube display through the driver module 300, it needs to output a high level to T2. At the same time, it scans the input voltage of the first key scanning port ANI1 of the control module 100 to determine whether the first key SW3 is pressed, and scans the input voltage of the second key scanning port ANI2 of the control module 100 to determine whether the second key SW4 is pressed. If the first key scanning port ANI1 is high, it indicates that the first key SW3 is pressed; if the second key scanning port ANI2 is high, it indicates that the second key SW4 is pressed.

[0057] When the control module 100 drives the third digital tube display through the driver module 300, it needs to output a high level to T3. Simultaneously, it scans the input voltage of the first key scanning port ANI1 of the control module 100 to determine if the first key SW5 is pressed, and scans the input voltage of the second key scanning port ANI2 of the control module 100 to determine if the second key SW6 is pressed. If the first key scanning port ANI1 is high, it indicates that the first key SW5 is pressed; if the second key scanning port ANI2 is high, it indicates that the second key SW6 is pressed.

[0058] It should be noted that if you need to light up an LED, you can apply a high level to the anode and a low level to the cathode.

[0059] like Figure 6 As shown, Figure 6 This diagram illustrates the current pulse waveform corresponding to the input current of the common terminal of the digital tube. When the first common terminal COM1, the second common terminal COM2, the third common terminal COM4, ​​or the fourth common terminal COM5 is at a high level, it is equivalent to selecting the corresponding digital tube. At this time, the non-common terminals of the LEDs that need to be lit in that digital tube are set to a low level, and the non-common terminals of the LEDs that do not need to be lit are set to a high level. It is understood that this embodiment utilizes the visual persistence effect of the human eye to achieve a simultaneous display effect. Simply put, although the four digital tubes are lit in turn, because the time each digital tube is off is very short, only a few milliseconds, the human eye cannot perceive that it is off, so it appears to be constantly lit. Of course, if the scanning frequency of the control module to the first and second button scanning ports is reduced, the human eye will perceive a flickering effect, and may even be able to see the process of each digital tube lighting up or turning off.

[0060] It should be noted that independent buttons refer to individual buttons connected independently to the I / O ports of the control module. The status of the corresponding I / O port is read; for example, a low input level on the I / O port indicates the button is released, and a high input level indicates the button is pressed. Specifically, one end of the button is connected to a separate I / O port, and the other end is connected to a high level. The corresponding I / O port is configured as an input state, and an external pull-down resistor is configured to be low by default. The level value of the I / O port is read; when the level is low, the button is released; when the level is high, the button is pressed. Finally, after button debouncing, the validity of this status is determined to confirm the button's state.

[0061] like Figure 3 As shown, in one embodiment, the display module 200 includes multiple equivalent circuits 210. The sixth connection terminal of each equivalent circuit 210 is connected to a second-level output port, and the seventh connection terminal of each equivalent circuit 210 is connected to a non-common terminal of the digital tube. Specifically, the sixth connection terminal COU1 of the equivalent circuit 210 is connected to a second-level output port, and the seventh connection terminal COU2 of the equivalent circuit 210 is connected to a non-common terminal of the digital tube.

[0062] like Figure 1 As shown, in one embodiment, the time-division multiplexing circuit board further includes a water level detection circuit 500, which is connected to the control module 100.

[0063] Specifically, such as Figure 2 and Figure 7 As shown, the control module 100 also includes a water level detection port WL2. The water level detection circuit 500 includes an eighth connection terminal WL1, which is electrically connected to the water level detection port WL2 of the control module 100. During the water filling, draining, and spin-drying processes of the washing machine, the control module 100 can detect the water level in the inner drum of the washing machine by controlling the water level detection circuit 500 to complete the functions of water filling, draining, and spin-drying in the inner drum of the washing machine.

[0064] like Figure 1 As shown, in one embodiment, the time-division multiplexing circuit board further includes an automatic dispensing detection module 600, which is connected to the control module 100. The automatic dispensing detection module 600 is used to automatically dispense the corresponding amount of detergent and fabric softener according to the weight of the clothes in the washing machine.

[0065] Specifically, such as Figure 2 and Figure 8As shown, the automatic dispensing detection module 600 includes a ninth connection terminal ADD1 and a tenth connection terminal ADS1. The control module 100 also includes a detergent dispensing port ADD2 and a fabric softener dispensing port ADS2. The ninth connection terminal ADD1 is connected to the detergent dispensing port ADD2, and the tenth connection terminal ADS1 is connected to the fabric softener dispensing port ADS2. The control module 100 can control the automatic dispensing detection module 600 to automatically dispense the corresponding amount of detergent and fabric softener according to the weight of the clothes in the washing machine.

[0066] like Figure 1 As shown, in one embodiment, the time-division multiplexing circuit board further includes a buzzer module 700, which is connected to the driver module 300.

[0067] Specifically, such as Figure 2 , Figure 4 and Figure 9 As shown, the drive module 300 also includes a third input terminal BUZC and a fourth output terminal PB1. The control module 100 includes a buzzer control port PB2, and the buzzer module 700 includes a fourth input terminal PB3. The buzzer control port PB2 is connected to the third input terminal BUZC, and the fourth output terminal PB1 is connected to the fourth input terminal PB3. When the washing machine's spin-drying program ends, the control module 100 controls the buzzer module 700 to emit a prompt sound through the drive module 300 to notify the user that the entire washing program has ended.

[0068] like Figure 1 As shown, in one embodiment, the time-division multiplexing circuit board further includes a lamp holder circuit 800, which is connected to the driver module 300. Specifically, as... Figure 2 , Figure 4 and Figure 10 As shown, the lamp circuit 800 includes a fifth input terminal DL1, the drive module 300 includes a fifth output terminal DL2 and a sixth input terminal DL3, and the control module 100 includes a lamp control port DL4, which is connected to the sixth input terminal DL3, and the fifth output terminal DL2 is connected to the fifth input terminal DL1. When the washing machine is powered on and the drum door is open, the control module 100 can control the lamp module to turn on the lamp light; or, when the washing machine is powered off and the time between the lamp light being turned on reaches a first preset duration, the control module 100 can control the lamp module to turn off the lamp light; or, when the washing machine is powered on and the time between the lamp light being turned on reaches a second preset duration, the control module 100 can control the lamp module to turn off the lamp light, and so on. This embodiment does not impose specific limitations on these aspects.

[0069] In one feasible implementation, the control module 100 can be a chip of model R5F100FGAFP; the drive module 300 can be a chip of model ULN2003; the equivalent circuit can be composed of chip DTCOU123YCA and resistor R; the lamp circuit 800 can include a chip of model 7251-003-001-960; the water level detection circuit 500 can include GF_RAST2.5_7P chip and MMUN2211L chip; the buzzer module 700 can be a chip of model TDK-PS1240P02BT; the automatic delivery detection module 600 can include components such as chip 7251-005-005-960 and chip BAV99, etc., and this application embodiment does not make specific limitations in this regard.

[0070] Furthermore, one embodiment of the present invention provides a washing machine that includes a time-sharing multiplexing circuit board as described in any of the above embodiments. This washing machine has the beneficial effects provided by the time-sharing multiplexing circuit board in any of the above embodiments. For example, by interconnecting the second connection terminals of the same segment of LEDs corresponding to different digital tubes to form a non-common terminal, and by connecting the second-level output port of the control module to the non-common terminal of the display module one by one, each second-level output port of the control module can simultaneously control all digital tubes in the display module. Similarly, by connecting the fourth connection terminal of each button component to the second output terminal of the button module, and connecting the second output terminal to the first button scanning port of the control module, the first button scanning port of the control module can control all button components. By connecting the fifth connection terminal of each button component to the third output terminal of the button module, and connecting the third output terminal to the second button scanning port of the control module, each second button scanning port of the control module can control all button components. Moreover, by connecting the common terminal of the digital tube to the first output terminal of the driver module one by one, connecting the first input terminal of the driver module to the first-level output port one by one, and connecting the second input terminal of the button module to the first-level output port of the control module one by one, it is possible to realize that one first-level output port of the control module can simultaneously control the button module and the digital tube. In other words, in this embodiment, one I / O port of the control module can control multiple digital tubes and multiple button components, or can control digital tubes and button components simultaneously. Therefore, this embodiment realizes the multi-functionality of the I / O port of the control module and saves hardware resources. In this way, there will be no waste of hardware resources during the production process of the washing machine, and the production cost of the washing machine can be saved.

[0071] The above is a detailed description of the preferred embodiments of the present invention. However, the present invention is not limited to the above embodiments. Those skilled in the art can make various equivalent modifications or substitutions without departing from the spirit of the present invention. All such equivalent modifications or substitutions are included within the scope defined by the claims of the present invention.

Claims

1. A time-multiplexed circuit board, characterized by The time-sharing multiplexing circuit board is arranged in a washing machine and comprises: a display module comprising a plurality of nixie tubes, each nixie tube comprising a plurality of segments of light-emitting diodes, each light-emitting diode comprising a first connection end and a second connection end, all the first connection ends of the same nixie tube being connected to each other to form a common end, and the second connection ends of the same segment of light-emitting diodes of different nixie tubes being connected to each other to form a non-common end; a driving module comprising a plurality of first input ends and a plurality of first output ends, the common end being connected to the first output end one by one; a key module comprising a second output end, a third output end, a plurality of second input ends and a plurality of key components, the second input end being connected to the third connection end of the key component one by one, the fourth connection end of each key component being connected to the second output end, and the fifth connection end of each key component being connected to the third output end; a control module comprising a plurality of first level output ports, a plurality of second level output ports, a first key scanning port and a second key scanning port, the first input end being connected to the first level output port one by one, the second input end being connected to the first level output port one by one, the first key scanning port being connected to the second output end, the second key scanning port being connected to the third output end, and the second level output port being connected to the non-common end one by one.

2. The time-multiplexed circuit board of claim 1, wherein, The key component comprises a first key and a second key, the first key being connected between the third connection end and the fourth connection end, and the second key being connected between the third connection end and the fifth connection end.

3. The time-multiplexed circuit board of claim 1, wherein, The display module comprises a plurality of equivalent circuits, the sixth connection end of the equivalent circuit being connected to the second level output port one by one, and the seventh connection end of the equivalent circuit being connected to the non-common end of the nixie tube one by one.

4. The time-multiplexed circuit board of claim 1, wherein, The time-sharing multiplexing circuit board further comprises a water level detection circuit, and the water level detection circuit is connected to the control module.

5. The time-multiplexed circuit board of claim 1, wherein, The time-sharing multiplexing circuit board further comprises an automatic dispensing detection module, the automatic dispensing detection module being connected to the control module, and the automatic dispensing detection module being used for automatically dispensing corresponding contents of detergent and softener according to the weight of clothes in the washing machine.

6. The time-multiplexed circuit board of claim 1, wherein, The time-sharing multiplexing circuit board further comprises a buzzer module, and the buzzer module is connected to the driving module.

7. The time-multiplexed circuit board of claim 6, wherein, The driving module further comprises a third input end and a fourth output end, the control module comprises a buzzer control port, the buzzer module comprises a fourth input end, the buzzer control port is connected to the third input end, and the fourth output end is connected to the fourth input end.

8. The time-multiplexed circuit board of claim 1, wherein, The time-sharing multiplexing circuit board further comprises a lamp barrel circuit, and the lamp barrel circuit is connected to the driving module.

9. The time-multiplexed circuit board of claim 8, wherein, The lamp barrel circuit comprises a fifth input end, the driving module comprises a fifth output end and a sixth input end, the control module comprises a lamp barrel control port, the lamp barrel control port is connected to the sixth input end, and the fifth output end is connected to the fifth input end.

10. A laundry machine characterized by The time-sharing multiplexing circuit board comprises the time-sharing multiplexing circuit board according to any one of claims 1 to 9.

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