CN111691122B

CN111691122B - Washing vibration control method

Info

Publication number: CN111691122B
Application number: CN202010480074.5A
Authority: CN
Inventors: 胡波清
Original assignee: Guangdong Lanshuihua Intelligent Electronic Co ltd
Current assignee: Guangdong Lanshuihua Intelligent Electronic Co ltd
Priority date: 2020-05-30
Filing date: 2020-05-30
Publication date: 2022-12-27
Anticipated expiration: 2040-05-30
Also published as: CN111691122A

Abstract

The invention belongs to the technical field of washing machines, and particularly relates to a washing vibration control method, which comprises the following steps: acquiring actual vibration characteristic parameters of the washing machine during washing; judging whether the actual vibration characteristic parameter and a preset standard vibration characteristic parameter reach a preset similarity threshold value or not; and if so, generating a current washing keeping instruction, wherein the current washing keeping instruction is used for controlling the washing machine to keep the current rotating speed for washing. When the washing machine is used for washing clothes, the washing machine is kept in a state consistent with the standard vibration characteristic parameter for washing clothes after the actual vibration characteristic parameter of the washing machine during washing clothes is compared with the preset standard vibration characteristic parameter, and then the washing machine is used for washing clothes efficiently in a stable vibration state, so that the washing efficiency is improved.

Description

Washing vibration control method

Technical Field

The invention belongs to the technical field of washing machines, and particularly relates to a washing vibration control method.

Background

At present, different vibration conditions of the washing machine can be found when clothes are washed at home, and although the vibration generated in the washing process of the washing machine is a normal phenomenon, the vibration of the washing machine and the washing efficiency have an inseparable relation in practice.

The washing efficiency of the washing machine is the most efficient state only when the vibration state of the washing machine is within a certain vibration range, and the washing effect is the best at the moment. However, most of the washing machines on the market have anti-shaking washing machines, but the anti-shaking effect is not good, and the problem of low washing efficiency is easily caused by the vibration problem of the washing machine. Also, there are few and few machines and associated vibration control methods on the market that control the vibration of a washing machine. Therefore, it is necessary to design a laundry vibration control method.

Disclosure of Invention

The invention aims to provide a washing vibration control method, and aims to solve the technical problem of low washing efficiency caused by vibration during washing in the prior art.

In order to achieve the above object, an embodiment of the present invention provides a laundry vibration control method, including:

s100: acquiring actual vibration characteristic parameters of the washing machine during washing, wherein the actual vibration characteristic parameters comprise actual vibration frequency parameters and actual vibration amplitude parameters;

s200: judging whether the actual vibration characteristic parameter and a preset standard vibration characteristic parameter reach a preset similarity threshold value or not;

s300: and if so, generating a current washing keeping instruction, wherein the current washing keeping instruction is used for controlling the washing machine to keep the current rotating speed for washing.

In order to achieve the above object, an embodiment of the present invention further provides a laundry vibration control method, where the laundry vibration control method is performed based on a laundry vibration control system, the laundry vibration control system includes a washing machine main board control device and a washing machine detection sensor, which are sequentially connected, and the method includes:

acquiring actual vibration characteristic parameters of the washing machine during washing by using the detection sensor of the washing machine, wherein the actual vibration characteristic parameters comprise actual vibration frequency parameters and actual vibration amplitude parameters;

judging whether the actual vibration characteristic parameter and a preset standard vibration characteristic parameter reach a preset similarity threshold value through a detection sensor for the washing machine;

and if the judgment result of the detection sensor for the washing machine is yes, generating a current washing keeping instruction, wherein the current washing keeping instruction is used for controlling the washing machine to keep the current rotating speed for washing through the washing machine main board control device.

One or more technical schemes in the laundry vibration control method provided by the embodiment of the invention at least have one of the following technical effects: when the washing machine is used for washing clothes, the actual vibration characteristic parameter of the washing machine during washing clothes is obtained firstly, and then whether the actual vibration characteristic parameter and the preset standard vibration characteristic parameter reach the preset similarity threshold value or not is judged; if the judgment result is yes, a current washing keeping instruction is generated and used for controlling the washing machine to keep the current rotating speed for washing, so that the washing machine can be kept in a state consistent with the standard vibration characteristic parameter for washing after the actual vibration characteristic parameter of the washing machine during washing is compared with the preset standard vibration characteristic parameter, and the washing efficiency is improved by enabling the washing machine to efficiently wash clothes in a stable vibration state.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise.

Fig. 1 is a schematic overall structure diagram of a detection sensor for a washing machine according to an embodiment of the present invention;

fig. 2 is an exploded view of a detection sensor for a washing machine according to an embodiment of the present invention;

fig. 3 is a schematic cross-sectional view of a detection sensor for a washing machine according to an embodiment of the present invention;

FIG. 4 is a schematic view of another perspective structure of FIG. 3;

fig. 5 is a schematic cross-sectional view illustrating a casing of a detection sensor for a washing machine according to an embodiment of the present invention;

fig. 6 is a schematic view of the overall structure of a pressure conductive elastic membrane of a detection sensor for a washing machine according to an embodiment of the present invention;

FIG. 7 is a schematic view illustrating another structure of a pressure conductive elastic membrane of the detecting sensor for washing machine of FIG. 6;

fig. 8 is a schematic view of the overall structure of a pressure conductive elastic membrane of a detection sensor for a washing machine according to another embodiment of the present invention;

FIG. 9 is a schematic cross-sectional view of the pressure conductive elastic membrane of the detecting sensor for washing machine of FIG. 8;

fig. 10 is a sectional view of a pressure conductive elastic membrane of a detecting sensor for a washing machine according to another embodiment of the present invention;

fig. 11 is a sectional view of a pressure conductive elastic membrane of a detecting sensor for a washing machine according to another embodiment of the present invention;

fig. 12 is a schematic cross-sectional view illustrating a detecting sensor for a washing machine according to another embodiment of the present invention;

fig. 13 is a schematic cross-sectional view illustrating a casing of a detection sensor for a washing machine according to another embodiment of the present invention;

fig. 14 is a schematic circuit diagram of a detection circuit of a detection sensor for a washing machine according to an embodiment of the present invention;

fig. 15 is a circuit block diagram of a detection circuit of a detection sensor for a washing machine according to an embodiment of the present invention;

FIG. 16 is a schematic circuit diagram of a water pressure and temperature detection circuit of the detection circuit according to another embodiment of the present invention;

fig. 17 is a circuit block diagram of a detection circuit of a detection sensor for a washing machine according to another embodiment of the present invention;

fig. 18 is a flowchart of a laundry vibration control method according to an embodiment of the present invention;

fig. 19 is a flowchart of S500 of a laundry vibration control method according to an embodiment of the present invention;

fig. 20 is a flowchart of S530-S610 of a laundry vibration control method according to an embodiment of the present invention;

fig. 21 is a flowchart of S100 of a laundry vibration control method according to an embodiment of the present invention;

fig. 22 is a block diagram of a laundry vibration control system according to an embodiment of the present invention.

Detailed Description

The embodiments of the present invention will be described in detail below, and the embodiments described below by referring to the drawings are exemplary and intended to be used for explaining the embodiments of the present invention, and are not to be construed as limiting the present invention.

In one embodiment of the present invention, as shown in fig. 18, there is provided a laundry vibration control method including the steps of:

specifically, the actual vibration frequency parameter reflects the vibration speed of Cheng Yitong of the washing machine during washing, and the actual vibration amplitude parameter is used for reflecting the vibration amplitude of the clothes containing barrel of the washing machine. The actual vibration state of the washing machine during washing can be reflected better by combining the actual vibration frequency parameter and the actual vibration amplitude parameter.

wherein the standard vibration characteristic parameters are calibrated in advance by a person skilled in the art. The skilled person in the art is practiced in advance to detect the vibration characteristic parameter of the washing machine when the washing machine is in the optimal washing state, and set the vibration characteristic parameter at the moment as the standard vibration characteristic parameter.

The similarity threshold is also set in advance, and when the washing machine actually washes the clothes, the vibration characteristic parameter of the washing machine corresponding to the optimal washing state is a range value, so the similarity threshold needs to be set to measure the similarity between the actual washing state and the optimal washing state of the washing machine.

In this step, when it is determined that the actual vibration characteristic parameter and the preset standard vibration characteristic parameter reach the similarity threshold, it indicates that the vibration state of the laundry machine at this time has reached the range of the standard vibration characteristic parameter, so that it is only necessary to maintain the current rotation speed.

In another embodiment of the present invention, as shown in fig. 18, the determining whether the actual vibration characteristic parameter and a preset standard vibration characteristic parameter reach a preset similarity threshold further includes:

s400: if the judgment result is negative, generating a washing and shaking removing instruction;

specifically, when the actual acceleration amplitude is larger than the standard amplitude, or other resonance frequency with larger amplitude appears in the frequency spectrum,

when the actual vibration frequency parameter is smaller than the standard vibration frequency parameter in the standard vibration characteristic parameters or the actual vibration amplitude parameter is smaller than the standard vibration amplitude parameter in the standard vibration characteristic parameters, it is judged that the actual vibration characteristic parameter and the preset standard vibration characteristic parameters do not reach a preset similarity threshold value, at the moment, the washing machine needs to be subjected to debouncing, and therefore the washing and debouncing instruction is generated.

S500: and controlling the washing machine to carry out washing and shaking removal operation on the washing machine according to the washing and shaking removal instruction.

Specifically, as shown in fig. 19, the controlling the washing machine to perform a washing and debouncing operation on the washing machine includes:

s510: generating a rotating speed adjusting instruction;

specifically, the rotating speed adjusting instruction comprises an acceleration instruction and a deceleration instruction, and the acceleration instruction is used for controlling the washing machine to accelerate; the deceleration command is used for controlling the washing machine to decelerate.

S520: and controlling the washing machine to increase or decrease the speed according to the rotating speed adjusting instruction, and obtaining the debounce adjusted rotating speed of the washing machine after the speed is increased or decreased.

Thus, the rotating speed of the washing machine is adjusted by increasing or decreasing the speed.

Further, as shown in fig. 20, the method further includes:

s530: obtaining a vibration characteristic parameter after speed regulation of the washing machine in a state corresponding to the rotation speed after the debounce adjustment according to the rotation speed after the debounce adjustment; the vibration characteristic parameters after speed regulation comprise vibration frequency parameters after debounce and vibration amplitude parameters after debounce;

in the step, the vibration characteristic parameters after speed regulation are obtained to judge whether the vibration after speed regulation reaches a standard vibration state or not subsequently.

S540: judging whether the vibration characteristic parameter after speed regulation and a preset standard vibration characteristic parameter reach a preset similarity threshold value or not;

s550: and if so, generating a debouncing completion instruction, wherein the debouncing completion instruction is used for controlling the washing machine to keep the debouncing adjusted rotating speed for washing clothes.

Specifically, after the vibration characteristic parameter after the speed regulation and the preset standard vibration characteristic parameter reach the preset similarity threshold, the vibration state of the vibration state after the speed regulation when the vibration state reaches the optimal washing state is indicated, so that the vibration control of the washing is adjusted through the speed regulation, and the washing efficiency is ensured.

Further, the determining whether the vibration characteristic parameter after speed regulation and a preset standard vibration characteristic parameter reach a preset similarity threshold further includes:

s560: if the judgment result is negative, generating a clothes adjusting instruction;

s561: controlling the washing machine to rotate back and forth at a preset adjusting speed for a preset adjusting time according to the clothes adjusting instruction;

in this embodiment, both the adjustment speed and the adjustment time are calibrated in advance, for example, the adjustment speed is set to 400 rpm, and the adjustment time is set to 3 minutes. Namely, the washing machine is controlled to perform reciprocating rotation at a speed of 400 rpm for 3 minutes by the laundry adjustment command. In the reciprocating rotation process, the clothes stacked in the washing machine can be adjusted by utilizing the inertia of the rotation of the clothes, so that the stacked clothes are smoother, and the problem of poor vibration state caused by the stacked clothes in the washing machine is prevented.

S562: controlling the washing machine to wash clothes at a preset target rotating speed, and obtaining vibration characteristic parameters of the adjusted clothes; the vibration characteristic parameters after the clothes adjustment comprise a vibration frequency parameter after the clothes adjustment and a vibration amplitude parameter after the clothes adjustment;

and after the stacked clothes are adjusted, washing clothes at the target rotating speed, and obtaining the vibration characteristic parameters after the clothes are adjusted to judge whether the adjustment is effective or not for follow-up.

S563: judging whether the adjusted vibration characteristic parameter of the clothes and a preset standard vibration characteristic parameter reach a preset similarity threshold value or not;

s564: and if so, generating a clothes adjusting finishing instruction, wherein the clothes adjusting finishing instruction is used for controlling the washing machine to wash at the target rotating speed.

When the vibration characteristic parameter after the clothes are adjusted and the standard vibration characteristic parameter are judged to reach a preset similarity threshold value, the situation that the efficient clothes washing state is achieved after the stacked clothes are adjusted is shown. Therefore, the clothes adjusting finishing instruction is generated, and the washing machine is controlled to wash clothes at the target rotating speed through the clothes adjusting finishing instruction.

Further, the determining whether the adjusted vibration characteristic parameter of the clothes and a preset standard vibration characteristic parameter reach a preset similarity threshold further includes:

s565: if not, returning to step S510, and obtaining the number of times of generating the command for generating the number of the rotation speed adjustment commands.

In this step, if the determination result is negative, it is not valid to adjust the stacked clothes, so the process returns to step S510 to adjust the rotation speed again.

Further, the method further comprises:

s600: judging whether the instruction generation times are not less than the preset debounce adjustment times or not;

s610: and if so, generating a user reminding instruction, and controlling the washing machine to remind the user according to the user reminding instruction.

In this step, the debounce adjustment index is used to count the debounce adjustment times in the washing process, and if the debounce adjustment times is set to 5, when it is determined that the instruction generation times is less than 5, it indicates that the debounce has been adjusted 5 times, but still the vibration is adjusted to the optimal washing state, so that manual adjustment is required, and thus the user reminding instruction is generated, and the washing machine is controlled to remind the user according to the user reminding instruction.

Specifically, the manner of reminding the user includes, but is not limited to, sounding through a buzzer and blinking an indicator light.

In another embodiment of the present invention, as shown in fig. 21, the acquiring the actual vibration characteristic parameter when the washing machine washes the laundry specifically includes:

s110: acquiring an actual washing acceleration parameter when the washing machine washes clothes;

specifically, an acceleration parameter of the washing machine during washing is acquired by an acceleration sensor.

S120: and obtaining the actual vibration characteristic parameter according to the actual washing acceleration parameter.

In this step, the acceleration parameter is converted into the actual vibration characteristic parameter, so as to better realize the vibration state of the washing machine during washing.

In another embodiment of the present invention, as shown in fig. 22, there is further provided a laundry vibration control method, which is performed based on a laundry vibration control system, where the laundry vibration control system includes a washing machine main board control device and a washing machine detection sensor, which are sequentially connected, and the method specifically includes:

s100 specifically comprises: acquiring actual vibration characteristic parameters of the washing machine during washing by using the detection sensor of the washing machine, wherein the actual vibration characteristic parameters comprise actual vibration frequency parameters and actual vibration amplitude parameters;

s200 specifically comprises the following steps: judging whether the actual vibration characteristic parameter and a preset standard vibration characteristic parameter reach a preset similarity threshold value through a detection sensor for the washing machine;

s300 specifically comprises the following steps: and if the judgment result of the detection sensor for the washing machine is yes, generating a current washing keeping instruction, wherein the current washing keeping instruction is used for controlling the washing machine to keep the current rotating speed for washing through the washing machine main board control device.

Specifically, the detection sensor for the washing machine may be mounted on a tub wall of the washing machine or a body of the washing machine according to actual use conditions, and mounted in a fixed manner, so that vibration of the washing tub of the washing machine may be efficiently transmitted to the detection sensor for the washing machine.

In another embodiment of the present invention, as shown in fig. 22, the washing machine main board control device includes a washing machine main control board 180 and a motor driving device 840. The washing machine main control board 180 is connected to the interface circuit 110. The motor driving device 840 is connected to the washing machine main control panel 180.

In another embodiment of the present invention, as shown in fig. 14 to 17, the detection sensor for a washing machine includes a detection circuit 100, and the detection circuit 100 includes an interface circuit 110, a voltage conversion circuit 120, a main control circuit 130, and a water pressure and temperature detection circuit 140.

Wherein, the interface circuit 110 is connected with a washing machine main control panel 180 of the washing machine;

the voltage conversion circuit 120 is connected to the interface circuit 110;

the master control circuit 130 is connected to the voltage conversion circuit 120 and the interface circuit 110;

the vibration detection circuit 150 is connected to the main control circuit 130 and the voltage conversion circuit 120, the vibration detection circuit 150 is configured to obtain an actual vibration characteristic parameter of the washing machine during washing, and transmit the actual vibration characteristic parameter to the main control circuit 130, and the main control circuit 130 transmits the actual vibration characteristic parameter to the washing machine main control board 180 through the interface circuit 110.

Based on the laundry vibration control system, the laundry vibration control method specifically comprises the following steps:

s400 specifically comprises the following steps: if the main control circuit 130 of the detection sensor for the washing machine judges that the result is negative, a washing and shaking removing instruction is generated;

s500 specifically includes: and controlling the washing machine to carry out washing and shaking removal operation on the washing machine through the washing machine main control board 180 of the washing machine main board control device according to the washing and shaking removal instruction.

S510 specifically includes: generating a rotating speed adjusting instruction by a main control circuit 130 of the detection sensor for the washing machine;

s520 specifically includes: and controlling the washing machine to increase or decrease the speed through a washing machine main control board 180 of the washing machine main board control device according to the rotating speed adjusting instruction, and obtaining the debounce adjusted rotating speed of the washing machine after increasing or decreasing the speed.

S530 specifically includes: obtaining a vibration characteristic parameter after speed regulation of the washing machine in a state corresponding to the rotation speed after the debounce adjustment through a main control circuit 130 of a detection sensor for the washing machine according to the rotation speed after the debounce adjustment; the vibration characteristic parameters after speed regulation comprise vibration frequency parameters after debounce and vibration amplitude parameters after debounce;

s540 specifically comprises: judging whether the vibration characteristic parameter after speed regulation and a preset standard vibration characteristic parameter reach a preset similarity threshold value through a main control circuit 130 of the detection sensor for the washing machine;

s550 specifically includes: and if the main control circuit 130 of the detection sensor for the washing machine judges that the judgment result is yes, generating a debouncing completion instruction, wherein the debouncing completion instruction is used for controlling the washing machine to keep the debouncing adjusted rotating speed for washing.

S560 specifically includes: if the main control circuit 130 of the detection sensor for the washing machine judges that the result is negative, generating a clothes adjusting instruction;

s561 specifically includes: controlling the washing machine to rotate back and forth at a preset adjusting speed and continue for a preset adjusting time through a washing machine main control board 180 of the washing machine main board control device according to the clothes adjusting instruction;

s562 specifically includes: controlling the washing machine to wash clothes at a preset target rotating speed through a washing machine main control board 180 of the washing machine main board control device, and obtaining vibration characteristic parameters of the clothes after adjustment through a vibration detection circuit 150 of the washing machine main board control device; the vibration characteristic parameters after the clothes adjustment comprise a vibration frequency parameter after the clothes adjustment and a vibration amplitude parameter after the clothes adjustment;

s563 specifically includes: judging whether the adjusted vibration characteristic parameter of the clothes and a preset standard vibration characteristic parameter reach a preset similarity threshold value through a main control circuit 130 of a detection sensor for the washing machine;

s564 specifically includes: if the main control circuit 130 of the detection sensor for the washing machine determines that the result is yes, a laundry adjustment completion instruction is generated, and the laundry adjustment completion instruction is used for controlling the washing machine to wash laundry at the target rotation speed.

S565 specifically includes: if the main control circuit 130 of the detection sensor for the washing machine determines that the number of the rotation speed adjustment instructions is not equal to the predetermined number, the process returns to step S510, and the number of times of generating the rotation speed adjustment instructions is obtained.

S600 specifically comprises: judging whether the instruction generation times are not less than the preset debounce adjustment times through a main control circuit 130 of a detection sensor for the washing machine;

s610 specifically includes: if the main control circuit 130 of the detection sensor for the washing machine judges that the result is yes, a user reminding instruction is generated, and the washing machine is controlled to remind a user according to the user reminding instruction.

S110 specifically comprises: acquiring an actual washing acceleration parameter of the washing machine during washing through a vibration detection circuit 150 of the detection sensor for the washing machine;

s120 specifically comprises: and obtaining the actual vibration characteristic parameter according to the actual washing acceleration parameter through the main control circuit 130 of the detection sensor for the washing machine.

In another embodiment of the present invention, as shown in fig. 14 to 15, the vibration detection circuit 150 includes a vibration detection chip U4, a first pin of the vibration detection chip U4 is connected to a third pin of the voltage stabilization chip U1 of the voltage conversion circuit 120, a fourteenth pin of the vibration detection chip U4 is connected to a twelfth pin of the main control chip U2 of the main control circuit 130, and a thirteenth pin of the vibration detection chip U4 is connected to an eleventh pin of the main control chip U2. In this embodiment, the model of the vibration detection chip U4 is preferably ADXL345 or the same model thereof.

The detection circuit 100 also includes a water pressure and temperature detection circuit 140.

The water pressure and temperature detection circuit 140 is connected to the voltage conversion circuit 120 and the main control circuit 130, and the water pressure and temperature detection circuit 140 is configured to detect water pressure and temperature information in the washing machine and transmit the detected water pressure and temperature information to the main control circuit 130, so that the main control circuit 130 transmits the water pressure and temperature information to the washing machine main control board 130 through the interface circuit 110.

In another embodiment of the present invention, as shown in fig. 14, the main control circuit 130 includes a main control chip U2, and the main control chip U2 is connected to the voltage conversion circuit 120, the interface circuit 110 and the water pressure and temperature detection circuit 140. Specifically, the model of the main control chip U2 in this embodiment is preferably STM8S003 or the same type of chip is selected by a person skilled in the art according to actual needs.

In another embodiment of the present invention, as shown in fig. 14, the water pressure and temperature detecting circuit 140 includes a water pressure and temperature detecting chip U3, the water pressure and temperature detecting chip U3 is connected to the voltage converting circuit 120, a data transmission pin of the temperature detecting chip U3 is connected to a data transmission pin of the main control chip U2, and a clock control pin of the temperature detecting chip U3 is connected to a clock control pin of the main control chip U2. Specifically, a data transmission pin of the temperature detection chip U3 is an SDA pin, and a clock control pin of the temperature detection chip U3 is an SCL pin. In this embodiment, the third pin of the temperature detection chip U3 is connected to the eleventh pin of the main control chip U2, and the fourth pin of the temperature detection chip U3 is connected to the twelfth pin of the main control chip U2. The model of the water pressure and temperature detection chip U3 is preferably DPS310.

The DPS310 digital pressure sensor is a miniature atmospheric pressure sensor with high accuracy and low current consumption. The sensor is based on the principle of capacitive sensing, and is capable of measuring pressure and temperature. This ensures high accuracy in the temperature change process, and by using this sensor, the accuracy and precision of data measurement is greatly improved.

The internal signal processor of the DPS310 converts the output of the pressure and temperature sensor elements into 24-bit results, each unit is individually calibrated, and the calibration coefficients calculated in this process are stored in a calibration register, and these coefficients are used for applications that convert the measurement results into high-precision pressure and temperature values, so that temperature and water pressure can be measured at a time by one of the temperature detection chips U3, which is efficient and convenient.

In another embodiment of the present invention, as shown in fig. 14, the voltage converting circuit 120 includes a voltage stabilizing chip U1, an input pin of the voltage stabilizing chip U1 is connected to a power supply output terminal of the main control board 180 of the washing machine, and an output pin of the voltage stabilizing chip U1 is respectively connected to a power supply pin of the main control chip U2 and a power supply pin of the water pressure and temperature detecting chip U3, and supplies power to the main control chip U2 and the water pressure and temperature detecting chip U3. In this embodiment, the reference numeral of the power supply output terminal of the main control board 180 of the washing machine is VIN. The input pin of the voltage stabilizing chip U1 is the second pin of the voltage stabilizing chip U1, the output pin of the voltage stabilizing chip U1 is the third pin of the voltage stabilizing chip U1, and the voltage output by the power supply output end of the washing machine main control board 180 is converted by the voltage stabilizing chip U1 and then is output by 3.3V from the third pin. The power supply pin of the main control chip U2 is a ninth pin, and the power supply pin of the water pressure and temperature detection chip U3 is an eighth pin. The model of the voltage stabilizing chip U1 is preferably TLV70433.

In another embodiment of the present invention, as shown in fig. 14 to 15, the voltage converting circuit 120 further includes an input protection circuit 121, and the input protection circuit 121 is disposed between the power supply output terminal of the main control board 180 of the washing machine and the input pin of the voltage stabilizing chip U1.

In another embodiment of the present invention, as shown in fig. 14, the input protection circuit 121 includes a self-healing fuse JZ1, and two ends of the self-healing fuse JZ1 are respectively connected to the power supply output terminal of the main control board 180 of the washing machine and the input pin of the voltage regulation chip U1. When the current passing through the self-recovery fuse JZ1 is too large, the resistance of the self-recovery fuse JZ1 becomes large, thereby playing a role of protecting a circuit.

In another embodiment of the present invention, as shown in fig. 14, the input protection circuit 121 further includes a protection diode D1, a cathode of the protection diode D1 is connected to the input pin of the zener chip U1, and an anode of the protection diode D1 is grounded. The protection diode D1 is used to prevent the subsequent circuits from being damaged by the surge or spike of the voltage output by the power supply output terminal of the washing machine main control board 180.

In another embodiment of the present invention, as shown in fig. 14, the interface circuit 110 includes a connection port J4, a first pin of the connection port J4 is connected to a serial input pin of the main control chip U2, a third pin of the connection port J4 is connected to a serial output pin of the main control chip U2, a second pin of the connection port J4 is grounded, and a fourth pin of the connection port J4 is connected to a power supply output terminal of the washing machine main control board 180.

Specifically, a serial port input pin of the main control chip U2 is an RX pin, and a serial port output pin of the main control chip U2 is a TX pin, in this embodiment, the first pin of the connection port J4 is connected to the third pin of the main control chip U2, and the third pin of the connection port J4 is connected to the second pin of the main control chip U2. Therefore, the parameters of the water pressure and temperature detection chip U3 are configured in an I2C communication mode, the main control chip U2 obtains the water pressure and temperature information detected by the water pressure and temperature detection chip U3 in an I2C communication mode, the main control chip U2 analyzes the water pressure information to obtain the water level height information in the water containing barrel of the washing machine through the received water pressure and temperature information, and obtains the water temperature information through analyzing the temperature information. Then, the main control chip U2 sends the water level height information and the water temperature information to the washing machine main control board 180 through the connection port J4, so that the washing machine main control board 180 controls the washing machine to work according to the water level height information and the water temperature information.

In another embodiment of the present invention, as shown in fig. 16 to 17, the water pressure and temperature detecting circuit 140 includes an internal detecting circuit 141 and an external detecting circuit 142, and both the internal detecting circuit 141 and the external detecting circuit 142 are connected to the main control circuit 130; the built-in detection circuit 141 is used for detecting the water pressure in the water tub of the washing machine, and the external detection circuit 142 is used for detecting the atmospheric pressure outside the water tub of the washing machine.

Specifically, the internal detection circuit 141 and the external detection circuit 142 respectively include a water pressure and temperature detection chip. In this embodiment, the reference number of the water pressure and temperature detecting chip of the built-in detecting circuit 141 is U3, that is, the built-in detecting circuit 141 includes the water pressure and temperature detecting chip U3. The external detection circuit has a water pressure and temperature detection chip with a label U5, that is, the external detection circuit 142 includes a water pressure and temperature detection chip U5.

And the third pin and the fourth pin of the water pressure and temperature detection chip U3 and the water pressure and temperature detection chip U5 are respectively connected with the eleventh pin and the twelfth pin of the main control chip U2.

The fifth pin of the water pressure and temperature detection chip U3 is suspended, so that the I2C of the water pressure and temperature detection chip U3 is 1 from the highest position of an address, the fifth pin of the water pressure and temperature detection chip U5 is grounded, and the I2C of the water pressure and temperature detection chip U5 is 0 from the lowest position of the address, so that the main control chip U2 can distinguish the water pressure and temperature detection chip U3 and the water pressure and temperature detection chip U5 according to the slave address, and the communication between the main control chip U2 and the water pressure and temperature detection chip U3 and the water pressure and temperature detection chip U5 can be realized independently.

Further, in practical applications, the detection end of the water pressure and temperature detection chip U3 of the built-in detection circuit 141 is located at the bottom of the water tub of the washing machine, that is, the pressure of the water in the water tub is directly opposite to the detection end of the built-in detection circuit 141, the pressure is actually the pressure of the water plus the pressure of the atmospheric pressure, and the main control chip U2 converts the sum of the pressure of the water and the atmospheric pressure into water level height information in the water tub and sends the water level height information to the washing machine main control board.

If the washing machine is located on a higher floor, such as twenty-first floor, the difference between the atmospheric pressure of twenty-first floor and the atmospheric pressure of twenty-second floor is too large, and if the sum of the water pressure and the atmospheric pressure is directly converted into the height information of the water level in the water bucket in the twenty-first floor, a large error is generated, so that the detection of the water level in the washing machine is inaccurate, and the work of the washing machine is influenced. Therefore, in the present application, the external detection circuit 142 is arranged, and the water pressure and temperature detection chip U5 of the external detection circuit 142 is located outside the area covered by the water level of the water containing barrel, so that the external detection circuit 142 detects the atmospheric pressure outside the water containing barrel of the washing machine, and thus, the main control chip U2 subtracts the pressure value detected by the water pressure and temperature detection chip U3 of the internal detection circuit 141 from the pressure value detected by the water pressure and temperature detection chip U5 of the external detection circuit 142, so as to obtain the pressure value of the actual water level, and then converts the pressure value of the actual water level to obtain the height information of the actual water level in the water containing barrel, so that the internal detection circuit 141 and the external detection circuit 142 are arranged to eliminate the influence of the change of the external atmospheric pressure on the detection of the water level in the water containing barrel in the washing machine, thereby realizing accurate water level measurement, and having high practicability.

In another embodiment of the present invention, as shown in fig. 1 to 2, the sensor for detecting washing machine further includes a housing 300, a pressure conductive elastic membrane 200, a pressure conductive medium 400, and a pressure detecting PCB 500, and the detecting circuit 100 is disposed on the pressure detecting PCB 500.

The bottom of the housing 300 is provided with a bottom opening 310, the top of the housing 300 is provided with an upper opening 320, and the pressure conducting elastic membrane 200, the pressure conducting medium 400 and the pressure detection PCB 500 are sequentially installed in the housing 300 from the upper opening 320. The pressure conducting elastic membrane 200 is installed in the housing 300 and then seals the bottom opening 310, the pressure conducting medium 400 is accommodated in the housing 300 and is arranged to press the pressure conducting elastic membrane 200, the pressure detecting PCB 500 is installed in the housing 300 and is arranged to press the pressure conducting medium 400, and the detecting end of the pressure detecting PCB 500 extends into the pressure conducting medium 400, so that external pressure is conducted to the detecting end of the pressure detecting PCB 500 after sequentially passing through the pressure conducting elastic membrane 200 and the pressure conducting medium 400, and then the pressure detecting PCB 500 detects the external pressure.

In another embodiment of the present invention, as shown in fig. 2 to 5, the periphery of the bottom of the housing 300 extends toward the center of the bottom opening 310 to form an elastic membrane mounting part 330, and the periphery of the pressure conductive elastic membrane 200 is connected to the elastic membrane mounting part 330. The elastic membrane mounting part 330 is used to conveniently mount the pressure conductive elastic membrane 200. After the installation, the bottom surface of the periphery of the pressure conducting elastic membrane 200 contacts the top surface of the elastic membrane installation part 330 and is tightly connected with the top surface through an external force, so that the pressure conducting elastic membrane 200 seals the bottom opening 310. Meanwhile, due to the elastic arrangement of the pressure conduction elastic membrane 200, when the pressure conduction elastic membrane 200 is tightly connected with the elastic membrane mounting part 330 by an external force, the periphery of the pressure conduction elastic membrane 200 is elastically deformed, so that under the action of the external force, on one hand, the tight connection between the pressure conduction elastic membrane 200 and the elastic membrane mounting part is realized, on the other hand, the sealing performance of the pressure conduction elastic membrane 200 after being sealed with the bottom opening is ensured, and the dual effects of connection and sealing are realized. Specifically, in the present embodiment, an ordinary person skilled in the art may select an adhesive or a pressing member such as glue to press the pressure-conducting elastic membrane 200 onto the elastic membrane mounting portion 330 according to actual requirements, so as to connect the periphery of the pressure-conducting elastic membrane 200 with the elastic membrane mounting portion 330 by using the adhesive or pressing force of the glue.

In another embodiment of the present invention, as shown in fig. 5, the elastic membrane mounting portion 330 includes a receiving platform 331, a periphery of the receiving platform 331 is curled toward the inside of the housing 300 to form a fixing rib 332, and an inner surface of the fixing rib 332 is abutted against a periphery of the pressure conductive elastic membrane 200. The upper surface of the receiving platform 331 is disposed in a plane, and when the pressure conducting elastic membrane 200 is mounted, the pressure conducting elastic membrane 200 is directly disposed on the receiving platform 331, so that the bottom surface of the periphery of the pressure conducting elastic membrane 200 is attached to the upper end surface of the receiving platform 331, and then the two are pressed together by using an external force. After pressing, the inner surface of the fixing rib 332 is attached to the periphery of the pressure-conducting elastic membrane 200, so that not only the upper end surface of the supporting platform 331 is in contact with the elastically deformed portion of the pressure-conducting elastic membrane 200, but also the inner surface of the fixing rib of the pressure-conducting elastic membrane 200 is in contact, thereby increasing the contact area between the pressure-conducting elastic membrane 200 and the elastic membrane mounting portion 330, and improving the sealing performance in a manner of simultaneous close contact of two portions.

In another embodiment of the present invention, as shown in fig. 2 to 4, the detection sensor for a washing machine further includes an elastic film pressing member 600, the elastic film pressing member 600 being installed in the housing 300; the middle of the elastic membrane pressing piece 600 is provided with a clearance hole 610 for avoiding the pressure conduction elastic membrane 200, and the bottom surface of the periphery of the elastic membrane pressing piece 600 is pressed on the top surface of the periphery of the pressure conduction elastic membrane 200, so that the bottom surface of the periphery of the pressure conduction elastic membrane 200 is attached to the bearing platform 331 and the fixing rib 332. The clearance hole 610 is used for not influencing the conduction of the pressure from the outside to the inside of the housing 300 along the pressure conduction elastic membrane 200. The periphery of the elastic membrane pressing piece 600 is pressed on the peripheral top surface of the pressure conduction elastic membrane 200, so that the pressure conduction elastic membrane 200 is in only peripheral contact with the elastic membrane pressing piece 600, the pressure conduction elastic membrane 200 is guaranteed to be fixed on the premise that the pressure conduction elastic membrane 200 is not influenced to realize the pressure conduction function, the structural design is ingenious, the bottom surface of the periphery of the pressure conduction elastic membrane 200 is attached to the bearing platform 331 and the fixing protruding ribs 332 after pressing, and the sealing performance is guaranteed.

In another embodiment of the present invention, as shown in fig. 2 and 4, the bottom of the housing 300 is provided with a pressing member mounting part 340 matched with the elastic film pressing member 600, so that the elastic film pressing member 600 is engaged in the pressing member mounting part 340. In this embodiment, the lateral wall of casing 300 bottom to inwards concave formation in the casing 300 compress tightly an installation department 340, compress tightly an installation department 340 with elasticity membrane pressure piece 600 phase-match sets up, so that external force will elasticity membrane pressure piece 600 install in when compressing tightly an installation department 340, elasticity membrane pressure piece 600 just block in the casing 300 and fixed pressure conduction elastic membrane 200 makes pressure conduction elastic membrane 200 take place elastic deformation and make its peripheral bottom surface and side respectively with accept platform 331 with fixed bead 332 laminates.

In another embodiment of the present invention, the elastic film pressing member 600 includes an annular pressing plate 620, a peripheral edge of the annular pressing plate 620 extends in a direction perpendicular to the annular pressing plate 620 to form a close-fitting column 630, a bottom surface of the close-fitting column 630 abuts against the receiving platform 331, and an outer side of the close-fitting column 630 is in close-fitting connection with an inner surface of the pressing member mounting portion 340. In this embodiment, the area and the shape of the annular pressing plate 620 are both matched with the area and the shape of the periphery of the pressure conducting elastic membrane 200, so that the annular pressing plate 620 is exactly pressed on the periphery of the pressure conducting elastic membrane 200, and the pressure conducting effect of the pressure conducting elastic membrane 200 is not affected when the pressure conducting elastic membrane 200 is fixed. In addition, the bottom surface of the tight fitting column 630 is abutted to the bearing platform 331, and the outer side of the tight fitting column 630 is tightly connected with the inner surface of the pressing part mounting part 340 in a tight fit manner, so that the elastic film pressing part 600 can be mounted, and meanwhile, the possibility that other outside or liquid permeates into the shell can be sealed, and the sealing performance is further improved.

In another embodiment of the invention, as shown in fig. 6-7, a side of the pressure conducting elastic membrane 210 facing away from the pressure conducting medium 400 is extended in a direction facing the pressure conducting medium 400 and forms a plurality of pressure conducting inner recesses 210.

In another embodiment of the present invention, as shown in FIG. 8, each of the pressure conducting inner recesses 210 is disposed in a ring shape. The pressure conducting concave part 210 is arranged in a ring shape, so that the pressure is conducted to the other side surface of the pressure conducting elastic membrane 200 along the ring shape of the pressure conducting concave part 210 during pressure conduction, the pressure brought by water is well conducted, and the accuracy of subsequent pressure measurement is further ensured. In this embodiment, each of the pressure conducting inner concave portions 210 is disposed in a circular ring shape. In this embodiment, the number of the pressure conducting inner recesses 210 is one.

In another embodiment of the present invention, as shown in fig. 6-7, the pressure conducting inner recesses 210 in the shape of a ring are equally spaced. Therefore, when the pressure of water acts on the pressure conduction concave part 210, the water can be uniformly conducted into the shell along the pressure conduction concave part 210, so that a high pressure conduction effect is ensured. In this embodiment, the number of the pressure conducting inner recesses 210 is two.

In another embodiment of the present invention, the center of each of the pressure conducting inner recesses 210 having a ring shape is the same as the center of the pressure conducting elastic membrane 200. That is, the center of each of the annular pressure conduction inner recesses 210 is the center of the pressure conduction elastic membrane 200, so that the stability of the overall structure of the pressure conduction elastic membrane 200 is ensured, the pressure of water is better supported, and the service life is prolonged.

In another embodiment of the present invention, as shown in fig. 6 to 9, each of the pressure conduction inner concave portions 210 is arranged in a stepped-down manner from the outer edge of the pressure conduction elastic membrane 200 toward the center of the pressure conduction elastic membrane 200. That is, the inward concave degree of each of the pressure conduction inner concave portions 210 decreases in sequence from the outer edge of the pressure conduction elastic film 200 to the center direction of the pressure conduction elastic film, and it can be understood that the inward concave surface of the pressure conduction inner concave portion 210 beside the center of the pressure conduction elastic film 200 is the lowest surface of the inward concave surface of each of the pressure conduction inner concave portions 210. Compared with the prior art, the planar structure has the advantages that the pressure conducting concave parts 210 are arranged in a step-down mode, so that the pressure can be transferred step by step along the pressure conducting concave parts 210 during pressure conduction, and the pressure conducting efficiency is improved. On the other hand, the pressure conduction elastic membrane 200 is integrally in a shape that one surface is concave towards the other surface, when the pressure conduction elastic membrane 200 contacts water, each pressure conduction concave part 210 has a flow guiding function, and in the flow guiding process, the pressure of the water also acts on each pressure conduction concave part 210 along with the flow guiding function, and then is conducted to the other side surface of the pressure conduction elastic membrane 200, so that the pressure conduction is realized.

In another embodiment of the present invention, as shown in fig. 8, the middle portion of the pressure conductive elastic membrane 200 extends toward the opposite direction of the concavity of the pressure conductive inner concave portion 210 and forms a middle convex portion 220. That is, the whole structure of the pressure conducting elastic membrane 200 is not disposed with one side inclined to the other side, but the middle protruding part 220 protruding from the middle of the pressure conducting inner concave part 210 in the opposite direction to the inner concave direction of the pressure conducting inner concave part 210 is disposed in the middle of the pressure conducting elastic membrane, so that when water pressure acts on the pressure conducting inner concave part 210, the middle protruding part 220 provides an elastic force, thereby ensuring the stability of the pressure conducting elastic membrane 200 when both sides of the structure are stressed, further ensuring that the pressure conducting elastic membrane 200 is not deformed due to continuous stress, and improving the stability of the whole structure of the elastic membrane. Specifically, the elastic force provided by the middle protruding portion 220 is a force that is diffused in the direction of the circumference of the pressure conductive elastic membrane 200 toward each of the pressure conductive inner concave portions 210 with the middle protruding portion 220 as the center.

In another embodiment of the present invention, as shown in fig. 6 to 7, the peripheral ring of the pressure-conducting elastic membrane 200 is provided with a first convex fitting part 230. In this embodiment, the first protruding fitting portion 230 is disposed in a circular ring shape.

In another embodiment of the present invention, as shown in fig. 10, the peripheral edges of the two side surfaces of the pressure conducting elastic membrane 200 extend in the direction away from the pressure conducting elastic membrane 200 and form a front convex close-fitting portion 241 and a back convex close-fitting portion 242, respectively; the front protrusion close-fitting portion 241 and the back protrusion close-fitting portion 242 are symmetrically arranged. In this embodiment, protruding tight-fitting portion 241 of front with protruding tight-fitting portion 242 of reverse side is the setting of protruding form, just protruding tight-fitting portion 241 of front with protruding tight-fitting portion 242 of reverse side all is the elasticity setting, so, through protruding form protruding tight-fitting portion 241 of front with protruding tight-fitting portion 242 of reverse side makes fixedly during pressure conduction elastic membrane 200, compress tightly protruding tight-fitting portion 241 of front with protruding tight-fitting portion 242 of reverse side makes protruding tight-fitting portion 241 of front with the bellying of protruding tight-fitting portion 242 of reverse side takes place elastic deformation to guarantee the leakproofness.

In another embodiment of the present invention, as shown in fig. 11, a peripheral edge of one side surface of the pressure conducting elastic membrane 200 extends in a direction away from the pressure conducting elastic membrane 200 and forms a single-sided convex fitting portion 250, and the other side surface of the pressure conducting elastic membrane 200 is arranged in a planar manner. Specifically, a side is planar pressure conduction elastic membrane 200 be convenient for with accept platform 331 and closely laminate, another side sets up protruding tight fitting portion 250 of unilateral is so that elastic membrane pressure spare 600 is pressed and is located make it take place elastic deformation on the protruding tight fitting portion 250 of unilateral to leakproofness when keeping the installation, so, the facility and the sealing of installation are realized to the difference through two-sided setting, and is high-efficient swift.

In another embodiment of the present invention, the pressure conducting elastic membrane 200 is made of silica gel, that is, the pressure conducting elastic membrane 200 is made of elastic silica gel, and the silica gel material is adopted, so that the pressure conducting elastic membrane 200 has excellent elasticity, and when the pressure conducting elastic membrane 200 bears pressure, elastic deformation occurs rapidly, which greatly alleviates the obstruction of the hard structure of the detection material to the pressure conducting process, thereby ensuring a high-efficiency pressure conducting effect, and thus realizing accurate measurement of the pressure. Of course, the material of the pressure conducting elastic membrane 200 may also be selected from other materials as long as the requirement for conducting the pressure of the pressure conducting elastic membrane 200 can be met, and the application is not limited specifically.

In addition, this application pressure conduction elastic membrane 200 sets up for integrated into one piece, so, the structure is more stable, indirectly improves pressure conduction elastic membrane 200's life to provide higher user experience for the user.

In another embodiment of the present invention, the pressure conducting medium 400 is made of silicone oil. The silicone oil has heat resistance, electrical insulation, weather resistance, hydrophobicity, physiological inertia and smaller surface tension, and also has low viscosity-temperature coefficient and higher compression resistance. On one hand, since the silicone oil has compression resistance, it can efficiently conduct the pressure conducted through the pressure conducting elastic membrane 200, and further conducted to the pressure detecting PCB 500, so as to improve the pressure conducting efficiency. On the other hand, silicone oil is also an excellent heat transfer oil, so that it can efficiently transfer water temperature by providing the silicone oil as the pressure conducting medium 400, thereby enabling the pressure detecting PCB 500 to detect the temperature of water in the tub within the washing machine. In addition, the electrical insulation of the silicone oil enables the detection end of the pressure detection PCB 500 to be soaked in the silicone oil for a long time without damaging the circuit structure on the pressure detection PCB 500, thereby ensuring that the service time and the service life of the pressure detection PCB 500 are not influenced.

In another embodiment of the present invention, the housing 300 is made of stainless steel. Stainless steel casing 300 still has extremely strong heat conductivity, and then guarantees the high-efficient heat-conduction when detecting the temperature.

In another embodiment of the present invention, as shown in fig. 1-4, the pressure test PCB 500 includes a PCB board fixture 510 and a test PCB board 520, and the test circuit 100 is disposed on the test PCB board 520.

Specifically, the detection PCB is partially clamped on the PCB fixing member 510, and the detection PCB 520 is partially immersed in the pressure conducting medium 400; the PCB fixing member 510 is installed in the housing 300, and the bottom of the PCB fixing member 510 is attached to the upper end surface of the pressure conducting medium 400. In this embodiment, the PCB fixing member 510 is made of rubber, and the PCB fixing member 510 and the detection PCB 520 are connected by low-temperature injection molding. After the bottom of the PCB fixing member 510 is attached to the upper end surface of the pressure conducting medium 400, the pressure conducting medium 400 is filled in the cavity between the PCB fixing member 510 and the pressure conducting elastic membrane 200 without any excess liquid or gas, so that the external pressure is completely conducted to the detection PCB 520 after passing through the pressure conducting elastic membrane 200 and then the pressure conducting medium 400, and the influence of excess substances in the pressure conducting medium 400 on the conduction of the pressure is avoided, thereby ensuring the high efficiency and accuracy of the conduction of the pressure to the detection PCB 520, and further improving the pressure detection precision.

In another embodiment of the present invention, as shown in fig. 2 to 4, the detection sensor for a washing machine further includes a fixing member supporter 530, the fixing member supporter 530 is mounted on the elastic film pressing member 600, and the PCB board fixing member 510 is mounted on the fixing member supporter 530. The fixing bracket 530 is used for fixing the PCB fixing member 510, and simultaneously, the PCB fixing member 510 is installed behind the fixing bracket 530, the PCB fixing member 510 gives the pressure on the fixing bracket 530 and the gravity of the fixing bracket 530 all fall on the elastic film pressing member 200, thereby fixing the PCB fixing member 510 and simultaneously having the pressing effect on the elastic film pressing member 600, which has extremely high practicability.

In another embodiment of the present invention, as shown in fig. 2 to 5, the fixing member bracket 530 includes a supporting frame 531, and a plurality of supporting columns 532 are disposed at the bottom of the supporting frame 531; the upper surface of the support frame 531 contacts the PCB fixing member 510, and the bottom of the support column 532 is pressed against the elastic film pressing member 600. In this embodiment, the support frame 531 is disposed in a flat plate shape, and an upper surface of the flat plate-shaped support frame 531 contacts and adheres to the PCB fixing member 510, so as to improve the relative stability of the two. The supporting columns 531 are arranged at equal intervals to ensure the balance of the overall stress of the fixing part bracket 530. In addition, each of the supporting pillars 532 is arranged in a column shape, and is matched with the flat plate-shaped supporting frame 531, so that while the supporting effect is ensured, the volume occupied by the fixing member bracket 530 in the cavity between the PCB fixing member 510 and the pressure conduction elastic membrane 200 is reduced, so as to ensure that the volume occupied by the pressure conduction medium 400 in the cavity between the PCB fixing member 510 and the pressure conduction elastic membrane 200 is larger, and further ensure the high efficiency and stability of the internal and external pressure conduction.

In another embodiment of the present invention, as shown in fig. 12-13, a partial sidewall of the middle portion of the housing 300 extends toward the outside of the housing 300 to form a fixture mounting table 350, and the fixture mounting table 350 is configured to match with the PCB board fixture 510 so that the PCB board fixture 510 is mounted on the fixture mounting table 510. In this embodiment, when the PCB fixing member 510 is installed on the fixing member installation platform 350, the sidewall of the PCB fixing member 510 is clamped on the fixing member installation platform 350, so that other fixing structures are not needed, the PCB fixing member 510 can be fixed by processing the casing 300 itself, and the production cost for producing other fixing components is saved while the fixing member is convenient and fast.

In another embodiment of the present invention, as shown in fig. 2-5 and 12-13, the PCB board fixing member 510 is provided with a plurality of medium guiding holes 511, and the bottom of each medium guiding hole 511 is outwardly expanded to form a medium outwardly expanded groove 512. Each of the medium guide holes 511 is used to inject the pressure conductive medium 400 into a cavity between the PCB board fixture 510 and the pressure conductive elastic membrane 200. During actual assembly, the PCB board fixing member 510 is installed in the housing 300, the pressure conducting medium 400 is injected through the medium guide holes 511, and after the pressure conducting medium 400 is filled, a vacuum pumping process is performed on a cavity between the PCB board fixing member 510 and the pressure conducting elastic membrane 200, so as to extract excessive gas. In the process of injecting the pressure conducting medium 400, the medium outward-expanding groove is used for accelerating the outflow of the pressure conducting medium 400, so that the liquid injection efficiency is improved, and the problem of blockage during liquid injection is prevented.

In another embodiment of the present invention, as shown in fig. 2 to 4, the detection sensor for a washing machine further includes a silicone fixing member 700, the silicone fixing member 700 is disposed in the housing 300 and above the detection PCB fixing member 510, and the silicone fixing member 700 is further connected to the detection PCB 520 and covers a part of the detection PCB 520. In this embodiment, the silicone fixing member 700 is made of silicone. After the pressure conducting medium 400 is injected and vacuumized, silica gel is injected into the housing 300, and the housing is kept still for a preset time until the silica gel is solidified, so that the silica gel fixing member 400 is formed, the medium guide hole 512 is blocked after the silica gel fixing member 400 is solidified, so that the pressure conducting medium 400 is ensured to be located in a sealed cavity, and in addition, the silica gel fixing member 700 is adhered to the inner side wall of the PCB fixing member 510 and the inner side wall of the housing 300 in the solidification process, so that the pressure conducting medium 400 is fixed in the housing 300 and the PCB fixing member 510 is fixed at the same time.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.

Claims

1. A laundry vibration control method, based on a laundry vibration control system including a washing machine main board control device and a washing machine detection sensor connected in sequence, the washing machine detection sensor being mounted on a tub wall of a washing machine or a body of the washing machine, the method comprising:

acquiring actual vibration characteristic parameters of the washing machine during washing through a detection sensor for the washing machine, wherein the actual vibration characteristic parameters comprise actual vibration frequency parameters and actual vibration amplitude parameters;

if the judgment result of the detection sensor for the washing machine is yes, generating a current washing keeping instruction, wherein the current washing keeping instruction is used for controlling the washing machine to keep the current rotating speed for washing through the washing machine main board control device;

the judging whether the actual vibration characteristic parameter and the preset standard vibration characteristic parameter reach a preset similarity threshold further comprises:

s500: controlling the washing machine to carry out washing and shaking removal operation on the washing machine according to the washing and shaking removal instruction;

the controlling the washing machine to perform washing and debouncing operations on the washing machine includes:

s510: generating a rotating speed adjusting instruction;

s520: controlling the washing machine to increase or decrease the speed according to the rotating speed adjusting instruction, and obtaining the debounce adjusted rotating speed of the washing machine after the speed is increased or decreased;

the method further comprises the following steps:

s550: if the judgment result is yes, a debouncing completion instruction is generated, and the debouncing completion instruction is used for controlling the washing machine to keep the debouncing adjusted rotating speed for washing clothes;

judging whether the vibration characteristic parameter after speed regulation and a preset standard vibration characteristic parameter reach a preset similarity threshold value further comprises:

s564: if the judgment result is yes, generating a clothes adjusting finishing instruction, wherein the clothes adjusting finishing instruction is used for controlling the washing machine to wash clothes at the target rotating speed;

judging whether the adjusted vibration characteristic parameter of the clothes and a preset standard vibration characteristic parameter reach a preset similarity threshold value further comprises:

2. A laundry vibration control method according to claim 1, further comprising:

3. The method as claimed in claim 1, wherein the obtaining of the actual vibration characteristic parameters of the washing machine during washing comprises:

4. The laundry vibration control method according to claim 1, wherein the detection sensor for the washing machine includes a detection circuit, the detection circuit including:

the interface circuit is connected with the washing machine main control board;

a voltage conversion circuit connected to the interface circuit;

the master control circuit is connected with the voltage conversion circuit and the interface circuit;

the vibration detection circuit is connected with the main control circuit and the voltage conversion circuit and used for acquiring actual vibration characteristic parameters when the washing machine washes clothes and transmitting the actual vibration characteristic parameters to the main control circuit, and the main control circuit transmits the actual vibration characteristic parameters to the washing machine main control board through the interface circuit.