CN111676656B

CN111676656B - Washing machine level adjustment reminding method, device and system

Info

Publication number: CN111676656B
Application number: CN202010480009.2A
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: 2023-08-08
Anticipated expiration: 2040-05-30
Also published as: CN111676656A

Abstract

The invention belongs to the technical field of washing machines, and particularly relates to a washing machine level adjustment reminding method, a washing machine level adjustment reminding device and a washing machine level adjustment reminding system, wherein the washing machine level adjustment reminding method comprises the following steps of: acquiring actual acceleration parameter information of the washing machine; acquiring inclination direction information of the washing machine according to the actual acceleration parameter information; according to the inclination direction information of the washing machine, inclination adjustment prompt information is obtained, and the inclination adjustment prompt information is used for prompting a user to carry out inclination adjustment on the washing machine. The invention reminds the user of an effective method when the washing machine needs to be adjusted to the horizontal state, and the user can know how to adjust the washing machine more easily through the inclination adjustment prompt information, so that the efficiency of adjusting the washing machine to the horizontal state is improved, and the adjustment of high-efficiency accurate adjustment is realized.

Description

Washing machine level adjustment reminding method, device and system

Technical Field

The invention belongs to the technical field of washing machines, and particularly relates to a washing machine level adjustment reminding method, device and system.

Background

When the washing machine is used for washing, whether the washing machine is placed horizontally or not has extremely high requirements, and if the placing unbalance causes the inclination of a box body of the washing machine, the washing efficiency is greatly affected, so that the problem of incomplete washing is solved; on the other hand, the washing machine is inevitably vibrated when in work, and the side turning of the washing machine is easily caused by the inclination of the machine body of the additional washing machine, so that the problem of low safety performance is caused.

Currently, there are already methods in the market for detecting whether a washing machine is placed at a level, that is, by detecting whether the washing machine is placed at a level, washing can be started when it is detected that the washing machine is placed at a level. If the washing machine is detected not to be horizontally placed, reminding a user of horizontally adjusting the washing machine.

However, the current washing machine has a function of reminding a user of adjusting the washing machine, but the user does not know how to adjust specifically, so that the user can adjust only by observing the inclination direction of the washing machine, thereby causing a technical problem of low adjustment efficiency. Therefore, it is necessary to design a method, a device and a system for reminding the level adjustment of the washing machine.

Disclosure of Invention

The invention aims to provide a method, a device and a system for reminding horizontal adjustment of a washing machine, and aims to solve the technical problem of low adjustment efficiency when the washing machine is adjusted to be horizontal in the prior art.

In order to achieve the above object, an embodiment of the present invention provides a method for reminding a washing machine of level adjustment, the method comprising the steps of: s200: acquiring actual acceleration parameter information of the washing machine; s300: acquiring inclination direction information of the washing machine according to the actual acceleration parameter information; s400: according to the inclination direction information of the washing machine, inclination adjustment prompt information is obtained, and the inclination adjustment prompt information is used for prompting a user to carry out inclination adjustment on the washing machine.

In order to achieve the above object, an embodiment of the present invention further provides a device for reminding a washing machine of horizontal adjustment, the device including: the acquisition module is used for acquiring the actual acceleration parameter information of the washing machine; the inclination information generation module is used for obtaining inclination direction information of the washing machine according to the actual acceleration parameter information; the prompt information generation module is used for obtaining inclination adjustment prompt information according to the inclination direction information of the washing machine, and the inclination adjustment prompt information is used for prompting a user to carry out inclination adjustment on the washing machine.

In order to achieve the above purpose, the embodiment of the invention also provides a washing machine horizontal adjustment reminding system, which comprises a detection sensor for the washing machine and a main board control device for the washing machine, which are sequentially connected, wherein the detection sensor for the washing machine comprises a vibration detection circuit, a main control circuit and an interface circuit which are sequentially connected, and the interface circuit is also connected with the main board control device for the washing machine; the main control circuit is used for acquiring actual acceleration parameter information of the washing machine through the vibration detection circuit; the main control circuit is used for obtaining the inclination direction information of the washing machine according to the actual acceleration parameter information; the main control circuit is used for obtaining inclination adjustment prompt information according to the inclination direction information of the washing machine, and the inclination adjustment prompt information is used for being sent to the main board control device of the washing machine through the interface circuit so as to prompt a user to carry out inclination adjustment on the washing machine.

The above technical scheme in the method, the device and the system for reminding the horizontal adjustment of the washing machine provided by the embodiment of the invention has at least one of the following technical effects: the invention obtains the actual acceleration parameter information of the washing machine; obtaining inclination direction information of the washing machine according to the actual acceleration parameter information; finally, according to the inclination direction information of the washing machine, inclination adjustment prompt information is obtained and used for prompting a user to carry out inclination adjustment on the washing machine, so that an effective method is reminded when the user needs to adjust the washing machine to a horizontal state, and the user can know how to adjust the washing machine more easily through the inclination adjustment prompt information, so that efficiency of adjusting the washing machine to the horizontal state is improved, and efficient and accurate adjustment is achieved.

Drawings

The drawings in the following description are only examples of embodiments of the present invention and other drawings may be made from these drawings by those of ordinary skill in the art without inventive faculty.

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

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

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

fig. 6 is a schematic view of the whole 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 showing another view angle structure of the pressure conductive elastic membrane of the detecting sensor for the washing machine of FIG. 6;

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

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

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

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

Fig. 13 is a schematic cross-sectional view of a housing of a detecting 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 detecting circuit of a detecting 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 method for reminding a washing machine of level adjustment according to an embodiment of the present invention;

FIG. 19 is a flowchart of S110-S130 of a method for reminding a washing machine of level adjustment according to an embodiment of the present invention;

FIG. 20 is a flowchart of S210-S230 of a method for reminding a washing machine of horizontal adjustment according to an embodiment of the present invention;

fig. 21 is a flowchart of S231-S234 of the flow of the washing machine level adjustment reminding method according to the embodiment of the present invention;

FIG. 22 is a flowchart of S235-S238 of a method for reminding a washing machine of level adjustment according to an embodiment of the present invention;

fig. 23 is a flowchart of S410-S440 of a washing machine level adjustment reminding method according to an embodiment of the present invention;

FIG. 24 is a flowchart of S450-S480 of a method for reminding a washing machine of horizontal adjustment according to an embodiment of the present invention;

FIG. 25 is a block diagram of a washing machine level adjustment reminding device according to an embodiment of the invention;

FIG. 26 is a block diagram of a washing machine level adjustment reminder system provided by an embodiment of the present invention;

fig. 27 is a schematic diagram of a method for reminding a washing machine of horizontal adjustment after a space rectangular coordinate system is established in an embodiment of the invention.

Detailed Description

Embodiments of the present invention will be described in detail below, examples of which are illustrated in the accompanying drawings, and the detailed meanings of the above terms in the embodiments of the present invention will be understood by those skilled in the art according to specific circumstances.

In one embodiment of the present invention, as shown in fig. 18, there is provided a washing machine level adjustment reminding method, the method comprising the steps of:

s200: acquiring actual acceleration parameter information of the washing machine;

s300: acquiring inclination direction information of the washing machine according to the actual acceleration parameter information;

s400: according to the inclination direction information of the washing machine, inclination adjustment prompt information is obtained, and the inclination adjustment prompt information is used for prompting a user to carry out inclination adjustment on the washing machine.

The invention obtains the actual acceleration parameter information of the washing machine; obtaining inclination direction information of the washing machine according to the actual acceleration parameter information; finally, according to the inclination direction information of the washing machine, inclination adjustment prompt information is obtained and used for prompting a user to carry out inclination adjustment on the washing machine, so that an effective method is reminded when the user needs to adjust the washing machine to a horizontal state, and the user can know how to adjust the washing machine more easily through the inclination adjustment prompt information, so that efficiency of adjusting the washing machine to the horizontal state is improved, and efficient and accurate adjustment is achieved.

In another embodiment of the present invention, as shown in fig. 19, before the step of obtaining the acceleration parameter information of the washing machine, the method further includes:

s110: establishing a space rectangular coordinate system, wherein a straight line where a central line of the washing machine is located is set as a Z axis, a straight line which faces the side surface of the washing machine and is perpendicular to the Z axis is set as an X axis, and a straight line which faces the front surface of the washing machine and is perpendicular to the Z axis is set as a Y axis;

specifically, in this embodiment, the space rectangular coordinate system is shown in fig. 27, and the four bottom corners of the washing machine are respectively marked as A, B, C and D points.

S120: acquiring a gravity acceleration parameter of the washing machine in a horizontal state;

specifically, when the washing machine is in a horizontal state, a gravity acceleration parameter is generated due to the gravity of the washing machine.

S130: and setting a negative half axis of the Z axis in the space rectangular coordinate system to coincide with the direction of the gravitational acceleration parameter.

In this step, after the negative half axis of the Z axis in the space rectangular coordinate system is set to coincide with the direction of the gravitational acceleration parameter, the acceleration parameter on the Z axis is-g, and the acceleration parameters on the x axis and the y axis are both equal to 0. If the washing machine is not in a horizontal state, the acceleration parameters in the x-axis and y-axis directions have components of the acceleration parameters in the z-axis, so that whether the washing machine is in a horizontal state can be judged only by detecting whether the acceleration parameters in the x-axis and y-axis directions have components of the acceleration parameters in the z-axis or not.

In another embodiment of the present invention, as shown in fig. 20, the actual acceleration parameter information includes an X-axis acceleration component parameter, a Y-axis acceleration component parameter, and a Z-axis acceleration component parameter decomposed in the space rectangular coordinate system, and the obtaining the inclination direction information of the washing machine according to the actual acceleration parameter information specifically includes:

S210: judging whether the Z-axis acceleration component parameter is the same as the gravity acceleration parameter;

s220: if the judging result is yes, generating non-tilting information of the washing machine, wherein the non-tilting information of the washing machine is used for prompting a user that the washing machine does not need to be adjusted;

in this step, when the determination result is yes, both the X-axis acceleration component parameter and the Y-axis acceleration component parameter are 0. The washing machine is in a horizontal state at the moment, so that the washing machine does not need to be adjusted.

It should be noted that, the final result obtained after the determination in the step S210 is to distinguish whether the washing machine is in a horizontal state that does not need to be adjusted. In this embodiment, it is determined that the washing machine is in a horizontal state by determining that the Z-axis acceleration component parameter is the same as the gravitational acceleration parameter is ideal, and this is described only for convenience of understanding.

In reality, the Z-axis acceleration component parameter and the gravitational acceleration parameter of the washing machine are hardly identical, so the step S210 may be set as follows: judging whether the Z-axis acceleration component is in a preset inclination threshold range or not; wherein the tilt threshold range is calibrated in advance by one of ordinary skill in the art for indicating the degree of tilt of the washing machine. Specifically, when the Z-axis acceleration component is determined to be within the inclination threshold range, it can be understood that the included angle between the central line of the washing machine and the horizontal plane is within a range that does not affect the normal operation of the washing machine, so that the washing machine can be determined to be in a horizontal state, and further, the non-inclination information of the washing machine is generated, so that a user is prompted that the washing machine does not need to be adjusted.

Of course, other judging methods and steps than the above-described method may be adopted in the step 210, so long as it can be realized to judge whether the washing machine is in a horizontal state that does not need to be adjusted.

S230: and if not, generating the inclination direction information of the washing machine according to the X-axis acceleration component parameter, the Y-axis acceleration component parameter and the Z-axis acceleration component parameter.

If the result of the judgment is negative, the washing machine is in a non-horizontal state, so that adjustment is needed.

In another embodiment of the present invention, as shown in fig. 21, the washing machine inclination direction information includes an indication of inclination toward the negative half axis of the X-axis, an indication of inclination toward the positive half axis of the X-axis, an indication of inclination toward the negative half axis of the Y-axis, and an indication of inclination toward the positive half axis of the Y-axis;

the generating the inclination direction information of the washing machine according to the X-axis acceleration component parameter, the Y-axis acceleration component parameter and the Z-axis acceleration component parameter specifically comprises:

s231: when the X-axis acceleration component parameter is judged to be negative, the Y-axis acceleration component parameter is judged to be zero, and the Z-axis acceleration component parameter is judged to be negative, generating the direction X-axis negative half-axis inclination indication;

Specifically, the negative half-axis tilt indication toward the X-axis indicates that the washing machine is tilted toward the negative half-axis of the X-axis.

Referring to fig. 27, in this step, the Z-axis acceleration component parameter is not 0, and the X-axis acceleration component parameter is negative, which means that the acceleration component in the Z-axis is split into the negative half axis of the X-axis at this time, so that the washing machine is tilted toward the negative half axis of the X-axis, that is, the AB side is higher than the CD side in fig. 27.

S232: when the X-axis acceleration component parameter is judged to be positive, the Y-axis acceleration component parameter is judged to be zero, and the Z-axis acceleration component parameter is judged to be negative, generating the positive half axis inclination indication towards the X-axis;

in particular, the positive half axis tilt indication toward the X axis indicates that the washing machine is tilted toward the positive half axis of the X axis.

In this step, when the X-axis acceleration component parameter is positive, it is explained that the acceleration component in the Z-axis is split into the positive half axis of the X-axis at this time, and thus the washing machine is tilted toward the positive half axis of the X-axis, that is, the AB side is lower than the CD side in fig. 27.

S233: when the X-axis acceleration component parameter is zero, the Y-axis acceleration component parameter is negative, and the Z-axis acceleration component parameter is negative, generating the negative half-axis inclination indication facing the Y-axis;

In this step, the Y-axis acceleration component parameter is negative, which means that the acceleration component in the Z-axis is split into the negative half-axis of the Y-axis at this time, so that the washing machine is tilted toward the negative half-axis of the Y-axis, that is, the AD side is higher than the BC side in fig. 27.

S234: and when the X-axis acceleration component parameter is zero, the Y-axis acceleration component parameter is positive, and the Z-axis acceleration component parameter is negative, generating the positive half axis inclination indication towards the Y axis.

In this step, since the acceleration component in the Z axis is divided into the positive half axis of the Y axis, the washing machine is tilted toward the positive half axis of the Y axis, and the AD side is lower than the BC side.

In this way, through the steps S231 to S234, the judgment of the inclination of the washing machine toward the positive and negative axes of the X axis and the Y axis is achieved. It can also be understood that detection of tilting of the washing machine towards left, right, front and rear is achieved.

In another embodiment of the present invention, as shown in fig. 22, the washing machine inclination direction information further includes an indication of inclination toward the first quadrant, an indication of inclination toward the second quadrant, an indication of inclination toward the third quadrant, and an indication of inclination toward the fourth quadrant;

the generating the inclination direction information of the washing machine according to the X-axis acceleration component parameter, the Y-axis acceleration component parameter and the Z-axis acceleration component parameter further comprises:

S235: when the X-axis acceleration component parameter is positive, the Y-axis acceleration component parameter is positive and the Z-axis acceleration component parameter is negative, generating the inclination indication towards the first quadrant;

specifically, the positive half axis of the X axis, the positive half axis of the Y axis and the positive half axis of the Z axis are first quadrants, and the Z axis is taken as a rotation axis to rotate anticlockwise and respectively are second quadrants, third quadrants and fourth quadrants.

In the step, the acceleration component on the Z axis is divided into a positive half axis of the X axis and a positive half axis of the Y axis, so that the washing machine is inclined towards the first quadrant, the point A is the lowest, and the point C is the highest.

S236: when the X-axis acceleration component parameter is judged to be negative, the Y-axis acceleration component parameter is judged to be positive, and the Z-axis acceleration component parameter is judged to be negative, generating the inclination indication towards the second quadrant;

in this step, the acceleration component on the Z axis is divided into a positive half axis on the X axis and a negative half axis on the Y axis, so that the washing machine is tilted toward the second quadrant, with the point D being the lowest and the point B being the highest.

S237: when the X-axis acceleration component parameter is judged to be negative, the Y-axis acceleration component parameter is judged to be negative, and the Z-axis acceleration component parameter is judged to be negative, generating the inclination indication towards the third quadrant;

In this step, the acceleration component on the Z axis is divided into a negative half axis of the X axis and a negative half axis of the Y axis, i.e., the washing machine is inclined toward the third quadrant, and at this time, the point C is highest and the point a is lowest.

S238: and when the X-axis acceleration component parameter is judged to be positive, the Y-axis acceleration component parameter is judged to be negative, and the Z-axis acceleration component parameter is judged to be negative, generating the inclination indication towards the fourth quadrant.

In the step, the acceleration component on the Z axis is divided into a positive half axis of the X axis and a negative half axis of the Y axis, the washing machine is inclined to the fourth quadrant, and at the moment, the point B is the lowest and the point D is the highest.

In another embodiment of the present invention, as shown in fig. 23, the inclination adjustment prompt information includes an X-axis negative half-axis reverse adjustment indication, an X-axis positive half-axis reverse adjustment indication, a Y-axis negative half-axis reverse adjustment indication, and a Y-axis positive half-axis reverse adjustment indication;

the method for obtaining the inclination adjustment prompt information according to the inclination direction information of the washing machine specifically comprises the following steps:

s410: generating an X-axis negative half-axis reverse adjustment instruction according to the X-axis negative half-axis inclination direction;

specifically, after the indication of the inclination of the negative half axis towards the X axis is generated, the inclination of the washing machine towards the negative half axis of the X axis is described, so that when the washing machine is adjusted, the adjustment should be performed towards the reverse direction of the negative half axis of the X axis, and the indication of the reverse adjustment of the negative half axis of the X axis is generated for reminding a user of the targeted adjustment.

Further, the X-axis negative half-shaft reverse adjustment indication can be set to be displayed on a man-machine interaction interface of the washing machine, so that a user can be more intuitively reminded of adjustment.

S420: generating an X-axis positive half-axis reverse adjustment instruction according to the X-axis positive half-axis inclination instruction;

the X-axis positive half shaft reverse adjustment indication is used for reminding a user of reversely adjusting the washing machine towards the X-axis positive half shaft.

S430: generating a negative half shaft reverse adjustment instruction of the Y shaft according to the negative half shaft inclination instruction facing the Y shaft;

the Y-axis negative half shaft reverse adjustment indication is used for reminding a user of reverse adjustment of the washing machine towards the Y-axis negative half shaft.

S440: and generating the Y-axis positive half shaft reverse adjustment indication according to the Y-axis positive half shaft inclination indication.

The Y-axis positive half shaft reverse adjustment indication is used for reminding a user of reversely adjusting the washing machine towards the Y-axis positive half shaft.

In another embodiment of the present invention, as shown in fig. 24, the inclination adjustment prompt information includes a first quadrant reverse adjustment indication, a second quadrant reverse adjustment indication, a third quadrant reverse adjustment indication and a fourth quadrant reverse adjustment indication;

S450: generating a first quadrant reverse adjustment indication according to the direction of the first quadrant inclination indication;

specifically, after the indication of tilting toward the first quadrant is obtained, it is explained that the washing machine tilts toward the first quadrant at this time, so that the washing machine should be adjusted in a direction opposite to the first quadrant during adjustment at this time, and the first quadrant reverse adjustment indication is further generated, so as to remind a user of the adjustment in a direction opposite to the tilting direction, and further provide adjustment efficiency.

S460: generating a second quadrant reverse adjustment instruction according to the direction of the second quadrant inclination instruction;

the second quadrant reverse adjustment indication is used for prompting a user to reversely adjust the washing machine to the second quadrant.

S470: generating a third quadrant reverse adjustment instruction according to the direction of the third quadrant inclination instruction;

the third quadrant reverse adjustment indication is used for prompting a user to reversely adjust the washing machine to the third quadrant.

S480: and generating a fourth quadrant reverse adjustment instruction according to the fourth quadrant inclination instruction.

The fourth quadrant reverse adjustment indication is used for prompting a user to reversely adjust the washing machine to the fourth quadrant.

In another embodiment of the present invention, the method further comprises: and calculating an inclination angle according to the X-axis acceleration component parameter, the Y-axis acceleration component parameter and the Z-axis acceleration component parameter to obtain an inclination angle value of the central line of the washing machine and the horizontal plane.

Specifically, the inclination angle value is obtained to inform a user of the inclination angle of the washing machine in a non-horizontal state, so that the user can correspondingly adjust according to the inclination angle value. Therefore, the user can adjust in a targeted manner, and the high efficiency of adjustment is further ensured.

In this way, the user is reminded to adjust the direction of the washing machine through the steps S231 to S234 and the steps S235 to S238, and then the user is reminded of the degree of specific adjustment through the inclination angle value, so that the reminding is realized through double adjustment reminding, and the adjustment efficiency is further improved.

In another embodiment of the present invention, the tilt angle calculation is based on the following formula:

wherein ,a_x For the X-axis acceleration component parameter, a _y For Y-axis acceleration component parameter, a _z And alpha is the inclination angle value and is a Z-axis acceleration component parameter.

In another embodiment of the present invention, as shown in fig. 25, there is also provided a washing machine level adjustment reminding apparatus, the apparatus comprising:

the acquisition module is used for acquiring the actual acceleration parameter information of the washing machine;

the inclination information generation module is used for obtaining inclination direction information of the washing machine according to the actual acceleration parameter information;

The prompt information generation module is used for obtaining inclination adjustment prompt information according to the inclination direction information of the washing machine, and the inclination adjustment prompt information is used for prompting a user to carry out inclination adjustment on the washing machine.

In another embodiment of the present invention, as shown in fig. 1 to 17 and 26, a system for reminding level adjustment of a washing machine is further provided, the system includes a detection sensor for the washing machine and a main board control device of the washing machine, which are sequentially connected, the detection sensor for the washing machine includes a vibration detection circuit 150, a main control circuit 130 and an interface circuit 110, which are sequentially connected, and the interface circuit 110 is further connected with the main board control device of the washing machine; wherein,

the main control circuit 130 is configured to obtain actual acceleration parameter information of the washing machine through the vibration detection circuit 150;

the main control circuit 130 is configured to obtain information of a tilting direction of the washing machine according to the actual acceleration parameter information;

the main control circuit 130 is configured to obtain inclination adjustment prompt information according to the inclination direction information of the washing machine, where the inclination adjustment prompt information is configured to send the inclination adjustment prompt information to the main board control device of the washing machine through the interface circuit 110 to prompt a user to perform inclination adjustment on the washing machine.

In another embodiment of the present invention, as shown in fig. 26, the main board control device of the washing machine includes a main board 180 of the washing machine and a man-machine interaction interface 190, the main board 180 of the washing machine is connected with the interface circuit, the man-machine interaction interface 190 is connected with the main board 180 of the washing machine, and the inclination adjustment prompt information is sent by the main board 180 of the washing machine and displayed by the man-machine interaction interface 190.

Specifically, in this embodiment, the man-machine interaction interface 190 may be a touch screen of the washing machine itself, or may be operated by setting an operation screen separately.

In another embodiment of the present invention, as shown in fig. 1 to 17, the detection sensor for a washing machine includes a detection circuit 100, and the detection circuit 100 includes the vibration detection circuit 150, the main control circuit 130, the interface circuit 110, and a voltage conversion circuit 120. The voltage conversion circuit 120 is connected to the vibration detection circuit 150, the main control circuit 130, and the interface circuit 110.

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

As shown in fig. 14-15, 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 stabilizing chip U1, a fourteenth pin of the vibration detection chip U4 is connected to a twelfth pin of the main control chip U2, 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 detecting chip U4 is preferably ADXL345 or a model of the same type.

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 end of the main control board 180 of the washing machine.

In another embodiment of the present invention, as shown in fig. 14, the detecting circuit 100 further includes a water pressure and temperature detecting circuit 140.

The water pressure and temperature detection circuit 140 comprises a water pressure and temperature detection chip U3, the water pressure and temperature detection chip U3 is connected with the voltage conversion circuit 120, a data transmission pin of the temperature detection chip U3 is connected with a data transmission pin of the main control chip U2, and a clock control pin of the temperature detection chip U3 is connected with a clock control pin of the main control chip U2. Specifically, the data transmission pin of the temperature detection chip U3 is an SDA pin, and the 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 detecting chip U3 is preferably DPS310.

The DPS310 digital pressure sensor is a miniature barometric 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 adopting the sensor, the accuracy and precision of data measurement are greatly improved.

The internal signal processor of DPS310 converts the output of the pressure and temperature sensor elements into 24-bit results, each unit is calibrated individually, the calibration coefficients calculated in this process are stored in the calibration registers, and these coefficients are used to convert the measurement results into high-precision pressure and temperature values, so that the temperature and water pressure can be measured at one 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 conversion circuit 120 includes a voltage stabilizing chip U1, an input pin of the voltage stabilizing chip U1 is connected to a power supply output end of the main control board 180 of the washing machine, and an output pin of the voltage stabilizing chip U1 is 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, respectively, and supplies power to the main control chip U2 and the water pressure and temperature detecting chip U3. In this embodiment, the reference number of the power supply output end 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 main control board 180 of the washing machine is converted by the voltage stabilizing chip U1 and then is output to 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.

According to the invention, the interface circuit 110, the voltage conversion circuit 120, the main control circuit 130 and the water pressure and temperature detection circuit 140 are arranged, and the water pressure and temperature detection circuit 140 is connected with the voltage conversion circuit 120 and the main control circuit 130, so that the water pressure and temperature detection circuit 140 detects the water pressure and temperature which are sequentially transmitted to the pressure transmission medium 400 through the pressure transmission elastic membrane 200 and reaches the water pressure and temperature detection circuit 140, and the detected water pressure and temperature information is transmitted to the main control circuit 130, so that the main control circuit 130 transmits the water pressure and temperature information to the main control board 180 of the washing machine through the interface circuit 110, double detection of water temperature and water pressure can be realized through the water pressure and temperature detection circuit 140, a plurality of branch sensors are not required to be arranged, the production cost is reduced, and compared with the mechanical structure, the accuracy of measuring the water temperature and the water pressure is higher, and the accuracy of the measured water pressure and temperature information is higher, and the method has extremely high practicability.

In another embodiment of the present invention, as shown in fig. 14 to 15, the voltage conversion circuit 120 further includes an input protection circuit 121, where the input protection circuit 121 is disposed between a power supply output end of the main control board 180 of the washing machine and an 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-recovery fuse JZ1, and two ends of the self-recovery fuse JZ1 are respectively connected to a power supply output end of the main control board 180 of the washing machine and an input pin of the voltage stabilizing chip U1. When the current passing through the self-recovery fuse JZ1 is too large, the resistance value of the self-recovery fuse JZ1 becomes large, thereby functioning as a protection circuit.

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

Specifically, the serial port input pin of the main control chip U2 is an RX pin, the 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 with the third pin of the main control chip U2, and the third pin of the connection port J4 is connected with the second pin of the main control chip U2. Thus, parameters of the water pressure and temperature detection chip U3 are configured in an I2C communication mode, the main control chip U2 also 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 water level information in a water bucket of the washing machine through the received water pressure and temperature information, and the water temperature information is obtained through analysis of the temperature information. Then, the main control chip U2 sends the water level information and the water temperature information to the main control board 180 through the connection port J4, so that the main control board 180 controls the washing machine to work according to the water level information and the water temperature information.

In another embodiment of the present invention, as shown in fig. 16-17, the water pressure and temperature detecting circuit 140 includes an internal detecting circuit 141 and an external detecting circuit 142, and 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 tub of the washing machine, and the external detection circuit 142 is used for detecting the atmospheric pressure outside the 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 water pressure and temperature detecting chip of the built-in detecting circuit 141 is denoted by reference numeral U3, that is, the built-in detecting circuit 141 includes a water pressure and temperature detecting chip U3. The water pressure and temperature detecting chip of the external detecting circuit is denoted by U5, that is, the external detecting circuit 142 includes a water pressure and temperature detecting chip U5.

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, the highest position of the I2C slave address of the water pressure and temperature detection chip U3 is 1, the fifth pin of the water pressure and temperature detection chip U5 is grounded, and the lowest position of the I2C slave address of the water pressure and temperature detection chip U5 is 0, 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 communication between the main control chip U2 and the water pressure and temperature detection chip U3 and communication between the water pressure and temperature detection chip U5 can be independently realized.

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

If the washing machine is located on a higher floor, such as twenty floors, the difference between the atmospheric pressure of twenty floors and the atmospheric pressure of one floor is too large, and if the sum of the pressure of water and the atmospheric pressure is directly converted into the water level height information in the water containing bucket in twenty floors, a large error can be generated, so that the water level detection in the washing machine is inaccurate, and the work of the washing machine is affected. Therefore, in the present application, the external detection circuit 142 is disposed, 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 tub, so that the external detection circuit 142 detects the atmospheric pressure outside the tub of the washing machine, so that 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 actual water level height information in the tub, so that by setting the internal detection circuit 141 and the external detection circuit 142, the influence of the change of the external atmospheric pressure on the water level detection in the tub of the washing machine is eliminated, so that the accurate water level measurement is realized, and the practicability is extremely high.

In one embodiment of the present invention, as shown in fig. 1 to 5, a detection sensor for a washing machine is provided, which includes a housing 300, a pressure conductive elastic membrane 200, a pressure conductive medium 400, and a pressure detection 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 conductive elastic membrane 200, the pressure conductive medium 400 and the pressure detection PCB 500 are sequentially installed in the housing 300 from the upper opening 320. The pressure intensity conductive elastic membrane 200 is installed in the shell 300 and is sealed in the bottom opening 310, the pressure intensity conductive medium 400 is accommodated in the shell 300 and is pressed and covered by the pressure intensity conductive elastic membrane 200, the pressure intensity detection PCB 500 is installed in the shell 300 and is pressed and covered by the pressure intensity conductive medium 400, and the detection end of the pressure intensity detection PCB 500 stretches into the pressure intensity conductive medium 400, so that the external pressure intensity is conducted to the detection end of the pressure intensity detection PCB 500 after passing through the pressure intensity conductive elastic membrane 200 and the pressure intensity conductive medium 400 in sequence, and the pressure intensity detection PCB 500 detects the external pressure intensity.

According to the invention, the shell 300, the pressure conductive elastic membrane 200, the pressure conductive medium 400 and the pressure detection PCB 500 are arranged, the pressure conductive medium 400 is contained in the shell, the pressure detection PCB 500 is arranged in the shell 300 and is arranged to cover the pressure conductive medium 400, and the detection end of the pressure detection PCB 500 is arranged to extend into the pressure conductive medium 400, so that when the external pressure is detected, the external pressure can be sequentially transmitted to the detection end of the pressure detection PCB 500 after passing through the pressure conductive elastic membrane 200 and the pressure conductive medium 400, and then the pressure detection 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 portion 330, and the periphery of the pressure-transmitting elastic membrane 200 is connected to the elastic membrane mounting portion 330. The elastic membrane mounting part 330 is used for conveniently mounting the pressure conductive elastic membrane 200. After the installation, the bottom surface of the periphery of the pressure conductive elastic membrane 200 contacts with the top surface of the elastic membrane installation portion 330 and is tightly connected with the top surface by external force, so as to achieve the purpose of sealing the bottom opening 310 by the pressure conductive elastic membrane 200. Meanwhile, due to the elastic arrangement of the pressure conductive elastic membrane 200, when the pressure conductive elastic membrane 200 is tightly connected with the elastic membrane mounting portion 330 by external force, the periphery of the pressure conductive elastic membrane 200 is elastically deformed, so that the tight connection of the pressure conductive elastic membrane 200 and the elastic membrane is realized under the action of external force, and the tightness of the pressure conductive elastic membrane 200 after the bottom opening is sealed is ensured, thereby realizing the dual effects of connection and sealing. Specifically, the external force in this embodiment may be selected by a person skilled in the art according to actual needs, such as an adhesive or a pressing member, to press the pressure-conducting elastic membrane 200 onto the elastic membrane mounting portion 330, so as to connect the periphery of the pressure-conducting elastic membrane 200 with the elastic membrane mounting portion 330 by using the adhering force or the pressing force of the adhesive.

In another embodiment of the present invention, as shown in fig. 5, the elastic membrane mounting portion 330 includes a receiving platform 331, and the periphery of the receiving platform 331 is curled inward toward the housing 300 to form a fixing rib 332, and an inner surface of the fixing rib 332 is fitted to the periphery of the pressure-conducting elastic membrane 200. The upper surface of the receiving platform 331 is planar, the pressure conductive elastic film 200 is directly disposed on the receiving platform 331 when the pressure conductive elastic film 200 is mounted, the bottom surface of the periphery of the pressure conductive elastic film 200 is attached to the upper end surface of the receiving platform 331, and then the two are pressed together by 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 receiving platform 331 contacts with the portion of the pressure-conducting elastic membrane 200 that is elastically deformed, but also the inner surface of the fixing rib of the pressure-conducting elastic membrane 200 contacts, 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 two portions simultaneously and tightly contacting.

In another embodiment of the present invention, as shown in fig. 2 to 4, the detecting sensor for a washing machine further includes an elastic membrane pressing member 600, and the elastic membrane pressing member 600 is installed in the housing 300; the middle part of the elastic membrane pressing member 600 is provided with a clearance hole 610 for keeping away the pressure conductive elastic membrane 200, and the bottom surface of the periphery of the elastic membrane pressing member 600 is pressed against the top surface of the periphery of the pressure conductive elastic membrane 200, so that the bottom surface of the periphery of the pressure conductive elastic membrane 200 is attached to the receiving platform 331 and the fixing rib 332. The clearance hole 610 is used to not affect the conduction of pressure from the outer edge of the pressure conductive elastic membrane 200 into the housing 300. The periphery of the elastic membrane pressing piece 600 is pressed on the top surface of the periphery of the pressure conducting elastic membrane 200, so that the pressure conducting elastic membrane 200 is in contact with the periphery of the elastic membrane pressing piece 600, and the pressure conducting elastic membrane 200 is fixed on the premise that the function of pressure conducting of the pressure conducting elastic membrane 200 is not affected, the structural design is ingenious, and the bottom surface of the periphery of the pressure conducting elastic membrane 200 is attached to the bearing platform 331 and the fixing ribs 332 after pressing, so that the tightness is ensured.

In another embodiment of the present invention, as shown in fig. 2 and 4, a pressing member mounting portion 340 matching with the elastic membrane pressing member 600 is provided at the bottom of the housing 300, so that the elastic membrane pressing member 600 is engaged in the pressing member mounting portion 340. In this embodiment, the side wall at the bottom of the housing 300 is concave inward toward the housing 300 to form the pressing member mounting portion 340, and the pressing member mounting portion 340 is matched with the elastic membrane pressing member 600, so that when the elastic membrane pressing member 600 is mounted on the pressing member mounting portion 340 by an external force, the elastic membrane pressing member 600 is just clamped in the housing 300 and fixes the pressure conducting elastic membrane 200, so that the pressure conducting elastic membrane 200 is elastically deformed, and the bottom and the side surfaces of the periphery of the pressure conducting elastic membrane are respectively attached to the receiving platform 331 and the fixing rib 332.

In another embodiment of the present invention, the elastic membrane pressing member 600 includes an annular pressing plate 620, the circumferential edge of the annular pressing plate 620 extends in a direction perpendicular to the annular pressing plate 620 to form a tight-fitting column 630, the bottom surface of the tight-fitting column 630 abuts against the receiving platform 331, and the outer side of the tight-fitting column 630 is tightly connected with the inner surface of the pressing member mounting portion 340. In this embodiment, the area and shape of the annular pressing plate 620 are matched with the area and shape of the periphery of the pressure conducting elastic membrane 200, so that the annular pressing plate 620 is just pressed on the periphery of the pressure conducting elastic membrane 200, and thus 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 close-fit column 630 is abutted to the receiving platform 331, and the outer side of the close-fit column 630 is closely connected to the inner surface of the compressing member mounting portion 340, so that the elastic membrane compressing member 600 can be mounted while other external or liquid can be sealed from penetrating into the housing, and the sealing performance is further improved.

In another embodiment of the present 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 expanded and extended in a direction facing the pressure conducting medium 400 to form a plurality of pressure conducting concave portions 210.

According to the invention, the pressure conductive elastic membrane 200 is arranged, and one side of the pressure conductive elastic membrane 200, which is away from the pressure conductive medium, is extended and extended towards the direction of the pressure conductive medium 400 to form the plurality of pressure conductive concave parts 210, so that when the detection sensor for the washing machine is used, the pressure of water can be transmitted to the other side of the pressure conductive elastic membrane 200 along the plurality of concave pressure conductive concave parts 210, namely, transmitted from the outside of the shell to the inside of the shell 300, and compared with the planar membrane structure in the prior art, the pressure conductive concave parts 210 have better guiding function on pressure conduction on one side and have high-efficiency pressure conduction function on the other side, so that the detection efficiency and accuracy are improved, and the detection sensor for the washing machine has extremely high practicability.

In another embodiment of the present invention, as shown in fig. 8, each of the pressure-transmitting concave portions 210 is provided in a ring shape. When the detection sensor for the washing machine is used, one side surface of the pressure conducting elastic membrane 200 bears the pressure of water in the water tub of the washing machine, and the pressure is conducted to the inside of the shell 300 after being conducted to the other side surface of the pressure conducting elastic membrane 200 through the pressure conducting elastic membrane 200. That is, when water exists in the tub of the washing machine, the pressure of the water acts on each pressure conduction concave portion 210, and by arranging the pressure conduction concave portions 210 in a ring shape, the pressure is conducted to the other side surface of the pressure conduction elastic membrane 200 along the ring shape of the pressure conduction concave portions 210 during pressure conduction, thereby better conducting the pressure brought by the water and further ensuring the accuracy of the subsequent pressure measurement. In this embodiment, each of the pressure conductive concave portions 210 is disposed in a circular ring shape. In this embodiment, the number of pressure conductive dimples 210 is one.

In another embodiment of the present invention, as shown in fig. 6-7, the pressure-transmitting concave portions 210 are each provided in a ring shape at equal intervals. In this way, when the pressure of the 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 as to ensure a higher pressure conduction effect. In this embodiment, the number of pressure conductive dimples 210 is two.

In another embodiment of the present invention, the center of each of the pressure-conducting concave portions 210 in the shape of a ring is the same as the center of the pressure-conducting elastic membrane 200. Namely, the center of each pressure conductive concave portion 210 in the ring shape is the center of the pressure conductive elastic membrane 200, so that the stability of the whole structure of the pressure conductive elastic membrane 200 is ensured, the pressure of water is better borne, and the service life is prolonged.

In another embodiment of the present invention, as shown in fig. 6 to 9, each of the pressure-transmitting concave portions 210 is provided in a stepped-down manner from the outer edge of the pressure-transmitting elastic membrane 200 toward the center of the pressure-transmitting elastic membrane 200. That is, from the outer edge of the pressure-conducting elastic membrane 200 toward the center of the pressure-conducting elastic membrane, the degree of concavity of each pressure-conducting concave portion 210 decreases in sequence, which may be understood that the concave surface of the pressure-conducting concave portion 210 beside the center of the pressure-conducting elastic membrane 200 is the lowest surface of the concave surface of each pressure-conducting concave portion 210. Compared with the planar structure in the prior art, the pressure conduction concave portions 210 are arranged in a stepped descending manner, so that pressure can be transmitted step by step along the pressure conduction concave portions 210 during pressure conduction, and the pressure conduction efficiency is improved. On the other hand, the pressure conductive elastic membrane 200 is formed in a shape that is concave toward the other surface, and when the pressure conductive elastic membrane 200 contacts water, each pressure conductive concave portion 210 has a diversion effect, and in the diversion process, the pressure of the water acts on each pressure conductive concave portion 210 along with diversion, and is further conducted to the other side surface of the pressure conductive elastic membrane 200, so that pressure conduction is realized.

In another embodiment of the present invention, as shown in FIG. 8, the middle portion of the pressure conducting elastomeric membrane 200 extends in the opposite direction of the concavity of the pressure conducting inner recess 210 and forms a middle outer flange 220. That is, the integral structure of the pressure-conducting elastic membrane 200 is not provided with one side inclined to the other side, but the middle outer convex portion 220 opposite to the concave direction of each pressure-conducting concave portion 210 is provided in the middle, so that when water pressure acts on each pressure-conducting concave portion 210, the middle outer convex portion 220 provides an elastic force, thereby ensuring stability of the pressure-conducting elastic membrane 200 when the two sides of the structure are stressed, further ensuring that the pressure-conducting elastic membrane 200 is not deformed due to continuous stress, and improving stability of the integral structure of the elastic membrane. Specifically, the elastic force provided by the middle outer flange 220 is a force that is diffused toward the circumferential direction of the pressure-transmitting elastic membrane 200 toward each of the pressure-transmitting concave portions 210 with the middle outer flange 220 as a center.

In another embodiment of the present invention, as shown in fig. 6 to 7, the pressure conductive elastic membrane 200 is provided with a first protrusion fitting part 230 around the circumference thereof. In this embodiment, the first protruding close-fitting portion 230 is disposed in a ring shape, and when the first protruding close-fitting portion 230 is used for fixing the pressure conducting elastic membrane 200, the elastic membrane pressing member presses the first protruding close-fitting portion 230, so as to seal the bottom opening 310.

In another embodiment of the present invention, as shown in fig. 10, the peripheral edges of both sides of the pressure-conducting elastic membrane 200 extend in a 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 convex close-fitting portion 241 and the back convex close-fitting portion 242 are symmetrically disposed. In this embodiment, the front protruding close-fitting portion 241 and the back protruding close-fitting portion 242 are arranged in a protruding manner, and the front protruding close-fitting portion 241 and the back protruding close-fitting portion 242 are all arranged elastically, so that when the pressure conductive elastic membrane 200 is fixed by the protruding front protruding close-fitting portion 241 and the back protruding close-fitting portion 242, the front protruding close-fitting portion 241 and the back protruding close-fitting portion 242 are pressed, and the protruding portions of the front protruding close-fitting portion 241 and the back protruding close-fitting portion 242 are elastically deformed, thereby ensuring tightness.

In another embodiment of the present invention, as shown in fig. 11, the periphery of one side 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 tight-fitting part 250, and the other side of the pressure-conducting elastic membrane 200 is disposed in a plane. Specifically, the pressure conductive elastic membrane 200 with a planar side surface is convenient to be tightly attached to the receiving platform 331, the other side surface is provided with the single-side protrusion close-fitting part 250 so that the elastic membrane pressing piece 600 is pressed on the single-side protrusion close-fitting part 250 to enable elastic deformation to occur, so that tightness in installation is kept, convenience and sealing of installation are achieved through different double-sided settings, and the pressure conductive elastic membrane is efficient and rapid.

In another embodiment of the present invention, the pressure conductive elastic membrane 200 is made of silica gel, that is, the pressure conductive elastic membrane 200 is made of silica gel with elasticity, and by adopting the silica gel material, the pressure conductive elastic membrane 200 has excellent elasticity, and when the pressure conductive elastic membrane 200 bears pressure, elastic deformation occurs rapidly, so that the obstruction caused by the rigid structure of the detection material itself to the pressure conductive process is greatly alleviated, and further the efficient pressure conductive effect is ensured, thereby realizing accurate measurement of the pressure. Of course, the material of the pressure-conducting elastic membrane 200 may be selected from other materials as long as the above-mentioned pressure-conducting requirement of the pressure-conducting elastic membrane 200 can be met, and the application is not limited in detail.

In addition, this application pressure conductive elastic membrane 200 sets up for integrated into one piece, so, guarantees the high efficiency in the production process, and integrated into one piece sets up to make pressure conductive elastic membrane 200 keeps as a whole, and the structure is more stable, indirectly improves pressure conductive elastic membrane 200's life to provide higher user experience for the user.

In another embodiment of the present invention, the pressure conductive medium 400 is made of silicone oil. Silicone oils have heat resistance, electrical insulation, weather resistance, hydrophobicity, physiological inertia and low surface tension, and in addition have a low viscosity-temperature coefficient and high compression resistance. On the one hand, since the silicone oil has compression resistance, it can efficiently transfer the pressure transferred through the pressure conductive elastic film 200 to the pressure detection PCB 500, thereby improving pressure transfer efficiency. On the other hand, silicone oil is also excellent heat transfer oil, so that it can efficiently transfer water temperature by providing the silicone oil as the pressure conductive medium 400, thereby enabling the pressure detection PCB 500 to detect the temperature of water in the tub in the washing machine. In addition, the electrical insulation of the silicone oil enables the detection end of the pressure detection PCB 500 to be immersed in the silicone oil for a long time without damaging the circuit structure on the pressure detection PCB 500, so that the use aging and the service life of the pressure detection PCB 500 are not affected.

In another embodiment of the present invention, the material of the housing 300 is stainless steel. In production, the housing 300 is made of stainless steel after being stretched. Since the treatment process for stainless steel in the prior art is mature, the manufacturing process of the housing 300 can utilize the mature process in the market to reduce the development cost. The housing 300 made of stainless steel has a certain strength, and can ensure the stability of the overall structure of the detection sensor for the washing machine. In addition, the housing 300 made of stainless steel has extremely strong thermal conductivity, thereby ensuring efficient heat conduction when detecting water temperature.

In another embodiment of the present invention, as shown in fig. 1-4, the pressure detecting PCB 500 includes a PCB fixing member 510 and a detecting PCB 520, the detecting PCB is partially clamped on the PCB fixing member 510, and the detecting 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 conductive medium 400. In this embodiment, the PCB fixing member 510 is made of rubber, and the connection between the PCB fixing member 510 and the detection PCB 520 is achieved by low-temperature injection molding. The bottom of the PCB fixing member 510 is attached to the upper end surface of the pressure conducting medium 400, so that the cavity between the PCB fixing member 510 and the pressure conducting elastic membrane 200 is filled with the pressure conducting medium 400 without redundant liquid and gas, thereby ensuring that the external pressure is conducted to the detection PCB 520 after passing through the pressure conducting elastic membrane 200 and then passing through the pressure conducting medium 400, avoiding the pressure conduction due to the influence of redundant substances in the pressure conducting medium 400, ensuring the high efficiency and accuracy of the pressure conduction 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 detecting sensor for a washing machine further includes a fixing member support 530, the fixing member support 530 is erected on the elastic membrane pressing member 600, and the PCB fixing member 510 is mounted on the fixing member support 530. The fixing support 530 is used for fixing the PCB board fixing member 510, and at the same time, the PCB board fixing member 510 is mounted on the fixing member support 530, and the PCB board fixing member 510 gives pressure on the fixing member support 530 and gravity of the fixing member support 530 all fall onto the elastic film pressing member 200, so that the elastic film pressing member 600 is pressed while the PCB board fixing member 510 is fixed, and the practicality is extremely high.

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

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 matched 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 mounted on the fixing member mounting table 350, the side wall of the PCB fixing member 510 is clamped on the fixing member mounting table 350, so that other fixing structures are not needed, the PCB fixing member 510 can be fixed by processing the housing 300, and the production cost for producing other fixing members is saved while the convenience and the rapidness are also improved.

In another embodiment of the present invention, as shown in fig. 2-5 and fig. 12-13, the PCB fixing member 510 is provided with a plurality of medium guiding holes 511, and the bottom of each medium guiding hole 511 is flared to form a medium flared slot 512. Each of the medium guide holes 511 is used for injecting the pressure conductive medium 400 into a cavity between the PCB board holder 510 and the pressure conductive elastic membrane 200. In actual assembly, the PCB fixing member 510 is first installed in the housing 300, and then the pressure conducting medium 400 is injected through each medium guiding hole 511, and after the pressure conducting medium 400 is fully injected, the cavity between the PCB fixing member 510 and the pressure conducting elastic membrane 200 is vacuumized to extract the redundant gas. In the process of injecting the pressure conducting medium 400, the medium expansion tank is used for accelerating the outflow of the pressure conducting medium 400, improving the liquid injection efficiency and preventing the problem of blockage during liquid injection.

In another embodiment of the present invention, as shown in fig. 2-4, the detecting sensor for a washing machine further includes a silica gel fixing member 700, the silica gel fixing member 700 is disposed in the housing 300 and above the detecting PCB fixing member 510, and the silica gel fixing member 700 is further connected with the detecting PCB 520 and covers a local arrangement of the detecting 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 shell 300, and the silica gel is allowed to stand for a preset time until the silica gel is solidified, so that the silica gel fixing piece 400 is formed, the medium guide hole 512 is plugged after the silica gel fixing piece 400 is solidified, so that the pressure conducting medium 400 is ensured to be positioned in a sealed cavity, and in addition, the silica gel fixing piece 700 is adhered to the PCB fixing piece 510 and the inner side wall of the shell 300 in the solidification process, so that the effect of fixing the silica gel fixing piece in the shell 300 and fixing the PCB fixing piece 510 at the same time is achieved.

The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the invention.

Claims

1. The washing machine level adjustment reminding system is characterized by comprising a detection sensor for the washing machine and a main board control device of the washing machine, which are sequentially connected, wherein the detection sensor for the washing machine comprises a vibration detection circuit, a main control circuit and an interface circuit which are sequentially connected, the detection sensor for the washing machine comprises a detection circuit, and the detection circuit comprises the vibration detection circuit, the main control circuit, the interface circuit and a voltage conversion circuit; the voltage conversion circuit is connected with the vibration detection circuit, the main control circuit and the interface circuit, the vibration detection circuit, the main control circuit and the interface circuit are connected in sequence, and the interface circuit is also connected with the main board control device of the washing machine; wherein,

the main control circuit is used for acquiring actual acceleration parameter information of the washing machine through the vibration detection circuit;

the main control circuit is used for obtaining the inclination direction information of the washing machine according to the actual acceleration parameter information;

the main control circuit is used for obtaining inclination adjustment prompt information according to the inclination direction information of the washing machine, and the inclination adjustment prompt information is used for being sent to the main board control device of the washing machine through the interface circuit so as to prompt a user to carry out inclination adjustment on the washing machine;

The detection circuit also comprises a water pressure and temperature detection circuit; the main control circuit comprises a main control chip, and the main control chip is connected with the voltage conversion circuit and the interface circuit;

the water pressure and temperature detection circuit comprises an internal detection circuit and an external detection circuit, and the internal detection circuit and the external detection circuit are connected with the main control circuit; the built-in detection circuit is used for detecting the water pressure in the water containing barrel of the washing machine, and the external detection circuit is used for detecting the atmospheric pressure outside the water containing barrel of the washing machine;

the detection end of the water pressure and temperature detection chip of the built-in detection circuit is positioned at the bottom of the water containing barrel of the washing machine, namely the detection end of the water pressure and temperature detection chip of the built-in detection circuit is opposite to the pressure of water in the water containing barrel, the pressure is actually the pressure of the water plus the pressure of the atmospheric pressure, the pressure value detected by the water pressure and temperature detection chip of the built-in detection circuit is subtracted by the main control chip, the pressure value of the actual water level can be obtained by the pressure value detected by the water pressure and temperature detection chip of the external detection circuit, and then the pressure value of the actual water level is converted to obtain the actual water level height information in the water containing barrel;

The detection sensor for the washing machine comprises a shell, a pressure conductive elastic membrane, a pressure conductive medium and a pressure detection PCB (printed circuit board), wherein a bottom opening is formed in the bottom of the shell, an upper opening is formed in the top of the shell, the pressure conductive elastic membrane, the pressure conductive medium and the pressure detection PCB are sequentially installed in the shell from the upper opening, the pressure conductive elastic membrane is installed in the shell and is sealed in the bottom opening, the pressure conductive medium is contained in the shell and is covered by the pressure conductive elastic membrane, the pressure detection PCB is installed in the shell and is covered by the pressure conductive medium, a detection end of the pressure detection PCB extends into the pressure conductive medium, the periphery of the bottom of the shell extends towards the center direction of the bottom opening to form an elastic membrane installation part, and the periphery of the pressure conductive elastic membrane is connected with the elastic membrane installation part; the elastic membrane mounting part is used for conveniently mounting the pressure conducting elastic membrane and comprises a bearing platform, the periphery of the bearing platform is curled inwards of the shell to form a fixing convex rib, and the inner surface of the fixing convex rib is attached to the periphery of the pressure conducting elastic membrane;

The water pressure and temperature detection circuit is connected with the voltage conversion circuit and the main control circuit, so that the water pressure and temperature detection circuit detects the water pressure and temperature reaching the water pressure and temperature detection circuit after being sequentially transmitted to the pressure conducting medium through the pressure conducting elastic membrane, and transmits detected water pressure and temperature information to the main board control device of the washing machine.

2. The washing machine level adjustment reminder system according to claim 1, further comprising, prior to the acquiring the acceleration parameter information of the washing machine:

3. The washing machine level adjustment reminding system according to claim 2, wherein the actual acceleration parameter information includes an X-axis acceleration component parameter, a Y-axis acceleration component parameter and a Z-axis acceleration component parameter decomposed in the space rectangular coordinate system, and the obtaining the washing machine inclination direction information according to the actual acceleration parameter information specifically includes:

4. The washing machine leveling reminder system according to claim 3, wherein the washing machine tilt direction information includes a negative half-axis tilt indication toward the X-axis, a positive half-axis tilt indication toward the X-axis, a negative half-axis tilt indication toward the Y-axis, and a positive half-axis tilt indication toward the Y-axis;

5. The washing machine level adjustment reminder system of claim 4, wherein the washing machine tilt direction information further includes a tilt toward first quadrant indication, a tilt toward second quadrant indication, a tilt toward third quadrant indication, and a tilt toward fourth quadrant indication;

6. The washing machine horizontal adjustment reminding system according to claim 5, wherein the inclination adjustment reminding information comprises an X-axis negative half-shaft reverse adjustment indication, an X-axis positive half-shaft reverse adjustment indication, a Y-axis negative half-shaft reverse adjustment indication and a Y-axis positive half-shaft reverse adjustment indication;

7. The washing machine level adjustment reminder system of claim 5, wherein the tilt adjustment reminder information includes a first quadrant reverse adjustment indication, a second quadrant reverse adjustment indication, a third quadrant reverse adjustment indication, and a fourth quadrant reverse adjustment indication;

8. The washing machine leveling reminder system in accordance with any one of claims 3-7, further comprising: and calculating an inclination angle according to the X-axis acceleration component parameter, the Y-axis acceleration component parameter and the Z-axis acceleration component parameter to obtain an inclination angle value of the central line of the washing machine and the horizontal plane.

9. The washing machine leveling reminder system according to claim 8, wherein the tilt angle calculation is based on the following formula:

；

wherein ,for the X-axis acceleration component parameter, < >>For Y-axis acceleration component parameters,/->As a component of the acceleration of the Z-axis,and the inclination angle value is the inclination angle value.

10. The washing machine level adjustment reminding system according to claim 1, wherein the washing machine main board control device comprises a washing machine main board and a man-machine interaction interface, the washing machine main board is connected with the interface circuit, the man-machine interaction interface is connected with the washing machine main board, and the inclination adjustment prompt information is sent by the washing machine main board to be displayed by the man-machine interaction interface.