CN111607937B

CN111607937B - Efficient washing control method for washing machine

Info

Publication number: CN111607937B
Application number: CN202010480073.0A
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: 2023-07-14
Anticipated expiration: 2040-05-30
Also published as: CN111607937A

Abstract

The invention belongs to the technical field of washing machines, and particularly relates to a high-efficiency washing control method of a washing machine, which comprises the following steps: acquiring water injection rinsing instruction information of the washing machine, and acquiring actual washing vibration characteristic parameters of the washing machine in the washing process and absolute water level height information in a water containing barrel of the washing machine in real time; judging whether the absolute water level height information in the water bucket is smaller than the preset maximum water level height of the washing machine, if so, judging whether the actual washing vibration characteristic parameter and the preset standard efficient washing vibration characteristic parameter reach a preset similarity threshold value; if the water injection stopping instruction is judged to be the water injection stopping instruction, the water injection stopping instruction is used for controlling the washing machine to stop water injection into the clothes containing barrel and continue washing. The invention ensures that the vibration state of the washing machine is in the standard high-efficiency washing vibration state, and simultaneously ensures that the water level of the washing machine is matched with the standard high-efficiency washing vibration state, thereby doubly ensuring the washing effect and further ensuring the high efficiency of the washing machine during washing.

Description

Efficient washing control method for washing machine

Technical Field

The invention belongs to the technical field of washing machines, and particularly relates to a high-efficiency washing control method of a washing machine.

Background

When the washing machine is in rinsing operation, the washing tub in the washing machine is operated to enable the washing tub to rotate, relative friction is generated between the inner wall of the washing tub and clothes in the rotating process, and the clothes are driven to move along with the inner wall of the washing tub, so that the clothes in the washing machine are rinsed.

However, the conventional washing machine has problems in rinsing, which results in unexpected washing effect. If the adhesion strength between the clothes and the washing drum is too strong, the clothes can always move along with the inner wall of the washing drum in a circular way; if the adhesion strength between the laundry and the tub is too weak, the laundry may not move with the inner wall of the tub. Both cases lead to the problem of poor laundry performance. Therefore, it is necessary to design a washing machine efficient washing control method.

Disclosure of Invention

The invention aims to provide a high-efficiency washing control method for a washing machine, and aims to solve the technical problem that the washing effect is poor when the washing machine is used for washing clothes in the prior art.

In order to achieve the above object, an embodiment of the present invention provides a method for controlling efficient washing of a washing machine, the method comprising the steps of:

s100: acquiring water injection rinsing instruction information of the washing machine, wherein the rinsing instruction information is used for controlling the washing machine to inject preset specific water quantity into the washing tub at intervals of preset first specific time and simultaneously wash clothes;

S200: acquiring actual washing vibration characteristic parameters of the washing machine in the washing process in real time and absolute water level height information in a water containing barrel of the washing machine;

s300: judging whether the absolute water level information in the water containing barrel is smaller than the preset maximum water level of the washing machine, and if so, turning to step S400;

s400: judging whether the actual washing vibration characteristic parameter and a preset standard efficient washing vibration characteristic parameter reach a preset similarity threshold value or not; if yes, generating a water injection stopping instruction which is used for controlling the washing machine to stop water injection into the clothes containing barrel and continue washing; if not, the process goes to step S100.

In order to achieve the above objective, an embodiment of the present invention further provides a method for controlling efficient washing of a washing machine, where the method for controlling efficient washing of a washing machine is based on an efficient washing control system, and the efficient washing control system includes a main board control device of the washing machine and a detection sensor for the washing machine, which are sequentially connected; the high-efficiency washing control method of the washing machine comprises the following steps:

s100: acquiring water injection rinsing instruction information of the washing machine through the main board control device of the washing machine, wherein the rinsing instruction information is used for controlling the washing machine to inject preset specific water quantity into the washing tub at intervals of preset first specific time and simultaneously wash clothes;

S200: acquiring actual washing vibration characteristic parameters of the washing machine in the washing process in real time through the detection sensor for the washing machine, and acquiring absolute water level height information in a water containing barrel of the washing machine;

s300: judging whether the absolute water level height information in the water holding barrel is smaller than the preset maximum water level height of the washing machine or not through the detection sensor for the washing machine, and if so, turning to step S400;

s400: judging whether the actual washing vibration characteristic parameter and a preset standard high-efficiency washing vibration characteristic parameter reach a preset similarity threshold or not through a detection sensor for the washing machine; if yes, generating a water injection stopping instruction which is used for controlling the washing machine to stop water injection into the clothes containing barrel and continue washing; if not, the process goes to step S100.

The above technical solutions in the efficient washing control method for a washing machine provided by the embodiments of the present invention have at least one of the following technical effects: the method comprises the steps of firstly obtaining water injection rinsing instruction information of the washing machine, and then obtaining actual washing vibration characteristic parameters of the washing machine and absolute water level height information in a water holding barrel of the washing machine in a washing process in real time; judging whether the absolute water level height information in the water containing barrel is smaller than the preset maximum water level height of the washing machine, if so, continuously judging whether the actual washing vibration characteristic parameter and the preset standard efficient washing vibration characteristic parameter reach a preset similarity threshold value; if yes, generating a water injection stopping instruction which is used for controlling the washing machine to stop water injection into the clothes containing barrel and continue washing; therefore, the vibration state of the washing machine is in the standard high-efficiency washing vibration state, and meanwhile the water level of the washing machine is kept to be matched with the standard high-efficiency washing vibration state, so that the washing effect is doubly ensured, and the high efficiency of the washing machine in washing is further ensured.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the embodiments or the description of the prior art will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

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 controlling efficient washing of a washing machine according to an embodiment of the present invention;

fig. 19 is a flowchart of S300 in a method for controlling efficient washing of a washing machine according to an embodiment of the present invention;

Fig. 20 is a flowchart of S330 in the efficient laundry control method of a washing machine according to an embodiment of the present invention;

fig. 21 is a flowchart of step S200 of a water level control method of a tub of a washing machine according to an embodiment of the present invention;

fig. 22 is a flowchart of step S210 of a water level control method of a tub of a washing machine according to an embodiment of the present invention;

fig. 23 is a flowchart after step S213 of the water level control method of the tub of the washing machine according to the embodiment of the present invention;

fig. 24 is a block diagram of a method for controlling efficient washing of a washing machine according to an embodiment of the present invention.

Detailed Description

Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and intended to illustrate embodiments of the invention and should not be construed as limiting the invention.

In one embodiment of the present invention, as shown in fig. 18 to 23, there is provided a method for controlling efficient washing of a washing machine, the method comprising the steps of:

Specifically, when a user washes clothes, the washing machine is started to set a washing mode, so that the washing machine obtains the water filling and rinsing instruction information, and the washing machine opens the water inlet valve to fill water into the water bucket and starts rinsing obligations.

Wherein the first specific time and the specific water amount are set in advance, for example, the first specific time is set to 2 minutes, the specific water amount is set to 2 liters, namely, 2 liters of water is injected into the tub of the washing machine every 2 minutes.

during the washing process of the washing machine, the washing machine may vibrate. In this embodiment, the actual laundry vibration characteristic parameter is acquired by using an acceleration sensor. Further, the acceleration sensor may be mounted on a tub wall or a machine body of the tub of the washing machine and mounted in a fixed manner such that vibration of the tub of the washing machine may be efficiently transmitted to the sensor device, thereby obtaining the actual laundry vibration characteristic parameter.

Specifically, in this step, the standard high-efficiency laundry vibration characteristic parameters are calibrated and pre-stored in advance by a person of ordinary skill in the art.

Further, when washing clothes, if the adhesion strength between the clothes and the washing drum is too strong, the clothes can continuously adhere to the inner wall of the washing drum to do circular motion after reaching the top of the washing drum in the rinsing process; if the adhesion strength between the laundry and the tub is too weak, the laundry cannot be rotated along with the rotation of the tub.

The best washing effect can be obtained only when the clothes move along with the inner wall of the washing tub to reach the top end of the washing tub, then the clothes fall off from the inner wall of the top end of the washing tub due to the action of gravity and fall to the bottom of the washing tub. In the process, when clothes are beaten to the bottom of the washing drum, a pulse signal with larger amplitude can be generated according to vibration parameters which can be detected by the acceleration sensor because the clothes are impacted to the bottom of the washing drum, and the time occupied by the process that the clothes are beaten to the bottom of the washing drum after rising to the top of the washing drum along with the washing drum is basically constant because the angular speed of the rotation of the washing drum is constant, so that the time interval which can be detected by the acceleration sensor can be stabilized within a certain range; meanwhile, the gravity of the clothes is the same every time the clothes fall, so that the amplitude of the pulse signal can be stabilized in a certain range. Therefore, the standard high-efficiency washing vibration characteristic parameter at least comprises the time interval at which the acceleration sensor can detect the pulse signal and the amplitude of the pulse signal in the high-efficiency washing process.

When judging that the actual washing vibration characteristic parameter and the preset standard high-efficiency washing vibration characteristic parameter reach the preset similarity threshold, the state of high-efficiency washing in the washing process is indicated, and meanwhile, in order to keep the current washing state, the matching of water levels is needed, so that water does not need to be injected into the washing tub at the moment. Thus generating a water injection stop command for controlling the washing machine to stop water injection into the tub and continue washing.

When judging that the actual washing vibration characteristic parameter and the preset standard high-efficiency washing vibration characteristic parameter do not reach the preset similarity threshold, indicating that the current water injection quantity does not reach the high-efficiency washing state of the washing, at the moment, turning back to the step S100, and injecting the preset specific water quantity into the washing tub again and washing the washing at the same time, so that the mode is adopted until the washing is in the high-efficiency washing state.

Therefore, the invention obtains the water injection rinsing instruction information of the washing machine firstly, and then obtains the actual washing vibration characteristic parameter of the washing machine and the absolute water level height information in the water holding barrel of the washing machine in the washing process in real time; judging whether the absolute water level height information in the water containing barrel is smaller than the preset maximum water level height of the washing machine, if so, continuously judging whether the actual washing vibration characteristic parameter and the preset standard efficient washing vibration characteristic parameter reach a preset similarity threshold value; if yes, generating a water injection stopping instruction which is used for controlling the washing machine to stop water injection into the clothes containing barrel and continue washing; therefore, the vibration state of the washing machine is in the standard high-efficiency washing vibration state, and meanwhile the water level of the washing machine is kept to be matched with the standard high-efficiency washing vibration state, so that the washing effect is doubly ensured, and the high efficiency of the washing machine in washing is further ensured.

In another embodiment of the present invention, as shown in fig. 19, the step S300 further includes: if the absolute water level information in the water containing barrel is not less than the preset maximum water level of the washing machine, executing the following steps:

s310: generating a drainage rinsing instruction, wherein the drainage rinsing instruction is used for controlling the washing machine to discharge a specific water quantity to the outside of the washing tub at a preset second specific time interval and simultaneously washing clothes;

in this step, when it is determined that the absolute water level height information in the tub is not less than the preset maximum water level height of the washing machine, it is indicated that the actual laundry vibration characteristic parameter of the washing machine detected in the whole process from when the washing is started to when the water is injected into the washing machine to the maximum water level height does not reach the preset similarity threshold with the standard efficient laundry vibration characteristic parameter, that is, the efficient laundry state is not reached in the whole process.

Therefore, it is necessary to generate a drain command to control the washing machine to drain a specific amount of water to the outside of the tub at a preset second specific time interval while washing the laundry, so as to detect when the optimal water level is reached for the subsequent continuation.

Wherein said second specific time and said specific amount of water are set by one of ordinary skill in the art according to actual needs.

S320: acquiring actual washing vibration characteristic parameters of the washing machine and absolute water level height information in the water containing barrel in the washing process after water drainage in real time;

s330: judging whether the absolute water level height information in the water containing barrel is smaller than the preset minimum water level height of the washing machine, and if so, turning to step S340;

s340: judging whether the actual washing vibration characteristic parameter and the standard efficient washing vibration characteristic parameter reach a preset similarity threshold value, if so, generating a drainage stop instruction, wherein the drainage stop instruction is used for controlling the washing machine to stop draining water outside the clothes containing barrel and continue washing; if not, the process goes to step S310.

In the step, when judging that the actual washing vibration characteristic parameter and the standard efficient washing vibration characteristic parameter reach a preset similarity threshold, the high-efficient washing state is achieved. At this time, the water discharge is not required, so that a water discharge stop command is generated to stop the washing machine from discharging water to the outside of the tub and continue washing.

If the actual washing vibration characteristic parameter and the standard efficient washing vibration characteristic parameter do not reach the preset similarity threshold, the efficient washing state is not reached at the moment. At this time, the water is continuously discharged, and the process goes to step S310.

In another embodiment of the present invention, as shown in fig. 20, the step S330 further includes: if the absolute water level height information in the water containing barrel is not less than the preset minimum water level height of the washing machine, the following steps are carried out:

s331: and comparing and analyzing each actual washing vibration characteristic parameter obtained in the washing process with the standard high-efficiency washing vibration characteristic parameter, and respectively obtaining a plurality of comparison analysis values, wherein the comparison analysis values are used for representing the similarity of the actual washing vibration characteristic parameter and the standard high-efficiency washing vibration characteristic parameter.

In this step, when it is judged that the absolute water level information in the tub is not less than the minimum water level preset in the washing machine, it is interpreted that the water in the tub of the washing machine has been drained at this time, but the efficient washing state has not yet been reached.

At this time, it is necessary to select an actual laundry vibration characteristic parameter closest to the standard efficient laundry vibration characteristic parameter from among the actual laundry vibration characteristic parameters obtained during the entire process of supplying and discharging water into and from the tub of the washing machine. Namely, comparing and analyzing each actual washing vibration characteristic parameter obtained in the washing process with the standard high-efficiency washing vibration characteristic parameter, wherein the larger the comparison analysis value is, the larger the similarity between the actual washing vibration characteristic parameter and the standard high-efficiency washing vibration characteristic parameter is.

S332: selecting the largest comparison analysis value from the comparison analysis values, and setting absolute water level height information in the water bucket corresponding to the largest comparison analysis value as a preferable water level height;

in the step, the absolute water level height information in the water containing barrel corresponding to the largest comparison analysis value is the better washing state in the whole washing process.

S333: generating a preferred water level water inlet instruction according to the preferred water level height, wherein the preferred water level water inlet instruction is used for controlling the washing machine to supply water into the water bucket to reach the preferred water level and simultaneously washing clothes.

Specifically, in this step, when the washing machine supplies water to the tub to reach the preferred water level and simultaneously performs washing, the washing is in a preferred efficient washing state.

In another embodiment of the present invention, as shown in fig. 21, in the step S200: the real-time acquisition of absolute water level height information in a water bucket of a washing machine in the washing process specifically comprises the following steps:

step S210: acquiring external atmospheric pressure information outside the washing machine;

in this step, the external atmospheric pressure information is an atmospheric pressure of a space outside a region of the tub of the washing machine covered by water in the tub of the washing machine.

Step S220: acquiring actual water holding barrel pressure information in a water holding barrel of the washing machine, wherein the actual water holding barrel pressure information comprises the external atmospheric pressure information and actual water holding barrel water level pressure information;

specifically, in this step, the actual tub pressure information is a pressure caused by the water in the tub of the washing machine together with the atmospheric pressure outside the area occupied by the water in the tub of the washing machine, so the actual tub pressure information includes the external atmospheric pressure information and the actual tub water level pressure information. The actual water level pressure information of the water containing barrel is the pressure brought by water in the water containing barrel of the washing machine.

Step S230: acquiring the actual water bucket water level pressure information according to a difference value between the actual water bucket pressure information and the external atmospheric pressure information;

specifically, the external atmospheric pressure information is removed by subtracting the external atmospheric pressure information from the actual tub pressure information, and the actual tub water level pressure information is obtained.

Step S240: and obtaining the absolute water level height information in the water holding barrel through pressure water level conversion calculation according to the actual water holding barrel water level pressure information.

Specifically, in this step, the absolute water level information in the water tub is a water level value converted from the pressure after the interference caused by the atmospheric pressure is eliminated, so that the absolute water level information in the water tub can more accurately reflect the height of water in the water tub of the washing machine, thereby laying a foundation for accurately controlling the water level during the subsequent washing of the washing machine, and ensuring the high efficiency and accuracy of controlling the water level during the washing of the washing machine.

In another embodiment of the present invention, as shown in fig. 22, the step S210 specifically includes:

step S211: acquiring washing machine drainage information after the washing machine is electrified, wherein the washing machine drainage information is used for controlling a drainage valve of the washing machine to be opened so as to drain water in a water holding barrel by the washing machine;

in this embodiment, the method for obtaining the information of the external atmospheric pressure information is to empty water in the water tub of the washing machine when the washing machine is started, and the pressure information that can be detected at this time is the pressure caused by the atmospheric pressure. Specifically, in the step, a user starts a power supply to supply power to the washing machine, the washing machine is electrified, the washing machine obtains the drainage information of the washing machine, and according to the drainage information of the washing machine, a drainage valve of the washing machine is opened, and water in a water containing barrel of the washing machine starts to drain.

Step S212: acquiring pressure information of a water holding barrel in water draining in a water holding barrel of the washing machine in a water draining process in real time, wherein each time point in the water draining process corresponds to one pressure information of the water holding barrel in water draining;

in the step, through detecting the pressure information of the water holding barrel in the water holding barrel of the washing machine in the water holding process, whether the water in the water holding barrel of the washing machine is emptied or not is conveniently judged.

Step S213: judging whether the pressure information of the water holding bucket in each drainage in the drainage process changes in real time, and if the pressure information of the water holding bucket in each drainage is judged to be unchanged and continuously exceeds the preset drainage finishing time, setting the current pressure information of the water holding bucket in the drainage as the external atmospheric pressure information.

After normal water draining is completed, only atmospheric pressure remains in the washing machine tub, so that the atmospheric pressure in the washing machine tub should be kept unchanged continuously. Therefore, when the pressure information of the water draining tub is kept unchanged and the preset water draining completion time is exceeded, the water in the water draining tub of the washing machine is drained, and the obtained pressure information of the water draining tub is the external atmospheric pressure information, namely the current pressure information of the water draining tub is set as the external atmospheric pressure information.

Further, the draining completion time is set according to actual demands by one of ordinary skill in the art. If the draining completion time is set to be 1 minute, when the draining process is completed, after the pressure information of the water holding barrel in the draining process is kept unchanged and lasts for 1 minute, the draining is judged to be completed at this time, and the pressure information of the water holding barrel in the draining at this time is set to be the external atmospheric pressure information.

In another embodiment of the present invention, as shown in fig. 23, in the step S213: the defining the current pressure information of the water containing barrel in the drainage as the external atmospheric pressure information further comprises the following steps:

step S214: acquiring empty bucket pressure information in the water bucket in real time, wherein each time point in the acquisition process corresponds to one empty bucket pressure information respectively;

specifically, when the washing machine is not in use, i.e., the washing machine empties the water in the tub, the external atmospheric pressure is changed in real time. At this time, therefore, it is necessary to learn to update the current barometric pressure value in real time. Specifically, the empty bucket pressure information in the water bucket is acquired in real time through detection, so that the atmospheric pressure information is updated for the subsequent real time.

Step S215: judging whether the change of the pressure information of each empty barrel exceeds a preset pressure change value within a preset time period; if yes, setting the changed empty barrel pressure information as the external atmospheric pressure information;

In this step, the preset pressure variation value is set to 80pa, and the preset period of time is set to 30 seconds. When the pressure change of the empty bucket pressure information exceeds 80pa in the process of continuously acquiring the empty bucket pressure information in the water bucket within 30 seconds, the change can be judged to be air pressure fluctuation, the empty bucket pressure information detected at the latest moment in the preset time period is updated to be the latest external atmospheric pressure information, and the empty bucket pressure information after the change is set to be the external atmospheric pressure information.

Thus, the real-time learning and updating of the atmospheric pressure information are realized. In the process of eliminating the influence of the atmospheric pressure information on the water level control of the washing machine, the accuracy of acquiring the atmospheric pressure information is further improved, so that the pressure value brought by the atmospheric pressure is ensured to be accurately removed, and the accuracy and the precision of acquiring the absolute water level height information in the water holding barrel are further improved, so that the accuracy and the intelligence of the washing machine on the water level control are improved.

In another embodiment of the present invention, the step S210: the acquiring external atmospheric pressure information outside the washing machine specifically includes:

And acquiring the external atmospheric pressure information through an external detection circuit, wherein the detection end of the external detection circuit is positioned outside the water containing barrel of the washing machine.

Specifically, in this step, an external detection circuit is provided, and the detection end of the external detection circuit is located outside the water tub of the washing machine, so that another method for acquiring the external atmospheric pressure information in real time without draining water in the water tub of the washing machine is provided.

In another embodiment of the present invention, the pressure water level transition calculation is based on the following formula:

wherein h is the absolute water level height information in the water containing barrel, P is the actual water containing barrel pressure information, P is the external atmospheric pressure information, and ρ=1000 kg/m ³ ，g＝9.8m/s ² 。

In particular, the pressure of water is related to the high density of water and the acceleration of gravity. Setting h to represent the height of water in the water tank of the washing machine, ρ to represent the density of water, g to represent the gravity acceleration, and Pwater to be the pressure brought by the water in the water tank of the washing machine, namely the Pwater to be the actual water tank water level pressure information.

Further, from the actual tub pressure information including the external atmospheric pressure information and the actual tub water level pressure information, it is known that: p (P) _Measuring ＝P _{Air flow} +P _{Water and its preparation method} ；

And P is _{Water and its preparation method} ＝ρhg；

Namely: p (P) _Measuring ＝P _{Air flow} +ρhg；

When the actual tub pressure information and the external atmospheric pressure information are calculated as a difference value, it is possible to obtain:

thus, h can be calculated to obtain the absolute water level height information in the water bucket.

In another embodiment of the present invention, as shown in fig. 24, the present invention further provides a method for controlling efficient washing of a washing machine, which is performed based on a efficient washing control system including a main board control device 800 of the washing machine and a detection sensor for the washing machine, which are sequentially connected; the high-efficiency washing control method of the washing machine comprises the following steps:

s100: acquiring water injection rinsing instruction information of the washing machine through the washing machine main board control device 800, wherein the rinsing instruction information is used for controlling the washing machine to inject preset specific water quantity into the washing tub at intervals of preset first specific time and simultaneously wash clothes;

In another embodiment of the present invention, as shown in fig. 24, the main board control device 800 of the washing machine comprises a main board 180 of the washing machine, a water inlet valve 820, a water outlet valve 830 and a motor driving device 840; the main control board 180 of the washing machine is connected with the detection sensor for the washing machine, and the water inlet valve 820, the water outlet valve 830 and the motor driving device 840 are all connected with the main control board 180 of the washing machine.

In another embodiment of the present invention, as shown in fig. 1 to 17, there is provided a sensing sensor for a washing machine, including a housing 300, a pressure conductive elastic membrane 200, a pressure conductive medium 400, and a pressure sensing 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.

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.

In another embodiment of the present invention, as shown in fig. 14-17, a detection circuit is disposed on the detection PCB board, 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 main control board 180 of the washing machine;

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

the main control circuit 130 is connected with the voltage conversion circuit 120 and the interface circuit 110;

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 main control board 130 of the washing machine 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, 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.

In another embodiment of the present invention, as shown in fig. 14, the water pressure and temperature detection circuit 140 includes a water pressure and temperature detection chip U3, the water pressure and temperature detection chip U3 is connected to the voltage conversion circuit 120, a data transmission pin of the temperature detection chip U3 is connected to a data transmission pin of the main control chip U2, and a clock control pin of the temperature detection chip U3 is connected to 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.

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.

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.

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. 14 to 15, the detecting circuit 100 further includes a vibration detecting circuit 150, the vibration detecting circuit 150 is connected to the main control circuit 130 and the voltage converting circuit 120, the vibration detecting circuit 150 is used for detecting vibration information of the washing machine and transmitting the vibration information to the main control circuit 130, and the main control circuit 130 transmits the vibration information to the main control board 180 of the washing machine through the interface circuit 110.

Specifically, 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. 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. 1-2, based on the high-efficiency laundry control system,

s310 specifically comprises: generating a drain rinsing command by the main control circuit 130 of the detection sensor for the washing machine, wherein the drain rinsing command is used for being sent to the main control board 180 of the washing machine and controlling the washing machine to discharge a specific water amount to the outside of the washing tub at a preset second specific time interval and simultaneously wash clothes;

s320 specifically includes: acquiring actual washing vibration characteristic parameters of the washing machine and absolute water level height information in the water holding barrel in the washing process after water drainage in real time through a main control circuit 130 of the detection sensor for the washing machine;

s330 specifically includes: judging whether the absolute water level height information in the water holding barrel is smaller than the preset minimum water level height of the washing machine or not through the main control circuit 130 of the detection sensor for the washing machine, and if so, turning to step S340;

s340 specifically includes: judging whether the actual washing vibration characteristic parameter and the standard high-efficiency washing vibration characteristic parameter reach a preset similarity threshold or not through a main control circuit 130 of the detection sensor for the washing machine, and if so, generating a drainage stop instruction which is used for controlling the washing machine to stop draining water outside a clothes containing barrel and continue washing; if not, the process goes to step S310.

S331 specifically includes: and comparing and analyzing each actual washing vibration characteristic parameter obtained in the washing process with the standard high-efficiency washing vibration characteristic parameter by the main control circuit 130 of the detection sensor for the washing machine, and respectively obtaining a plurality of comparison analysis values, wherein the comparison analysis values are used for representing the similarity of the actual washing vibration characteristic parameter and the standard high-efficiency washing vibration characteristic parameter.

S332 specifically includes: selecting the largest comparison analysis value from the comparison analysis values by a main control circuit 130 of the detection sensor for the washing machine, and setting absolute water level information in the tub corresponding to the largest comparison analysis value as a preferred water level;

s333 specifically includes: and generating a preferred water level water inlet instruction according to the preferred water level height by the main control circuit 130 of the detection sensor for the washing machine, wherein the preferred water level water inlet instruction is used for controlling the washing machine to supply water into the water tub to reach the preferred water level and simultaneously washing clothes.

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 efficient washing control method for the washing machine is characterized by being based on an efficient washing control system, and the efficient washing control system comprises a washing machine main board control device and a detection sensor for the washing machine, which are connected in sequence; the high-efficiency washing control method of the washing machine comprises the following steps:

s400: judging whether the actual washing vibration characteristic parameter and a preset standard high-efficiency washing vibration characteristic parameter reach a preset similarity threshold or not through a detection sensor for the washing machine; if yes, generating a water injection stopping instruction which is used for controlling the washing machine to stop water injection into the clothes containing barrel and continue washing; if not, turning to step S100;

In the step S200: the real-time acquisition of absolute water level height information in a water bucket of a washing machine in the washing process specifically comprises the following steps:

s210: acquiring external atmospheric pressure information outside the washing machine;

s220: acquiring actual water holding barrel pressure information in a water holding barrel of the washing machine, wherein the actual water holding barrel pressure information comprises the external atmospheric pressure information and actual water holding barrel water level pressure information;

s230: acquiring the actual water bucket water level pressure information according to a difference value between the actual water bucket pressure information and the external atmospheric pressure information;

s240: obtaining absolute water level height information in the water holding barrel through pressure water level conversion calculation according to the actual water holding barrel water level pressure information;

the step S210 specifically includes:

s211: acquiring washing machine drainage information after the washing machine is electrified, wherein the washing machine drainage information is used for controlling a drainage valve of the washing machine to be opened so as to drain water in a water holding barrel by the washing machine;

s212: acquiring pressure information of a water holding barrel in water draining in a water holding barrel of the washing machine in a water draining process in real time, wherein each time point in the water draining process corresponds to one pressure information of the water holding barrel in water draining;

s213: judging whether the pressure information of the water holding bucket in each drainage in the drainage process changes in real time, and if the pressure information of the water holding bucket in each drainage is judged to be unchanged and continuously exceeds the preset drainage finishing time, setting the current pressure information of the water holding bucket in the drainage as the external atmospheric pressure information;

After the step S213, the method further includes: step S214: acquiring empty bucket pressure information in the water bucket in real time, wherein each time point in the acquisition process corresponds to one empty bucket pressure information respectively; step S215: judging whether the change of the pressure information of each empty barrel exceeds a preset pressure change value within a preset time period; if yes, setting the changed empty barrel pressure information as the external atmospheric pressure information;

the detection sensor for the washing machine further comprises a shell and a pressure conductive elastic membrane, wherein the bottom of the shell is provided with a bottom opening;

the periphery of the bottom of the shell extends towards the center direction of the bottom opening to form an elastic membrane mounting part, and the periphery of the pressure conductive elastic membrane is connected with the elastic membrane mounting part; the elastic membrane mounting part is used for conveniently mounting the pressure conductive elastic membrane;

the elastic membrane installation part comprises a bearing platform, the periphery of the bearing platform is curled inwards 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.

2. The efficient washing control method of a washing machine as claimed in claim 1, wherein the step S300 further comprises: if the absolute water level information in the water containing barrel is not less than the preset maximum water level of the washing machine, executing the following steps:

3. The efficient washing control method of a washing machine as claimed in claim 2, wherein the step S330 further comprises: if the absolute water level height information in the water containing barrel is not less than the preset minimum water level height of the washing machine, the following steps are carried out:

s331: comparing and analyzing each actual washing vibration characteristic parameter obtained in the washing process with the standard high-efficiency washing vibration characteristic parameter, and respectively obtaining a plurality of comparison analysis values, wherein the comparison analysis values are used for representing the similarity of the actual washing vibration characteristic parameter and the standard high-efficiency washing vibration characteristic parameter;

4. The efficient washing control method of a washing machine as claimed in claim 1, wherein the step S210 specifically includes:

5. The efficient washing control method of the washing machine as claimed in claim 1, wherein the main board control device of the washing machine comprises a main board of the washing machine, a water inlet valve, a water outlet valve and a motor driving device; the main control board of the washing machine is connected with the detection sensor for the washing machine, and the water inlet valve, the water outlet valve and the motor driving device are all connected with the main control board of the washing machine.

6. The efficient washing control method of a washing machine as claimed in claim 5, wherein the detection sensor for the washing machine includes a detection circuit including:

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

the voltage conversion circuit is connected with the interface circuit;

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

the pressure and temperature detection circuit is connected with the voltage conversion circuit and the main control circuit, and is used for detecting pressure and temperature information in the washing machine and transmitting the detected pressure and temperature information to the main control circuit so that the main control circuit transmits the pressure and temperature information to the main board of the washing machine through the interface circuit.

7. The efficient washing control method of the washing machine as claimed in claim 6, wherein the detecting sensor for the washing machine further comprises a pressure conductive medium and a pressure detecting PCB board; the pressure detection circuit is arranged on the pressure detection PCB; the pressure intensity conductive elastic membrane is arranged in the shell and seals the bottom opening, the pressure intensity conductive medium is accommodated in the shell and is covered by the pressure intensity conductive elastic membrane, the pressure intensity detection PCB is arranged in the shell and is covered by the pressure intensity conductive medium, and the detection end of the pressure intensity detection PCB stretches into the pressure intensity conductive medium, so that the external pressure intensity sequentially passes through the pressure intensity conductive elastic membrane and the pressure intensity conductive medium and then is conducted to the detection end of the pressure intensity detection PCB, and the pressure intensity detection PCB detects the external pressure intensity.