CN110241544B - Clothes processing equipment and RFID signal shielding method - Google Patents

Abstract

The present invention relates to the technical field of clothing treatment equipment, and in particular to a clothing treatment equipment and an RFID signal shielding method thereof. Wherein, the clothing processing equipment of the present invention includes a box, an RFID identification module provided inside the box, and a door unit pivotably installed on the box, and the door unit is provided with a window screen and a door handle. There is a gap between the door handle and the box body, and the box body includes a countertop unit. The clothes processing equipment also includes a first signal shielding part provided on the window screen, and a second signal shielding part provided on the door handle. The signal shielding part and the third signal shielding part provided on the table unit. The clothing processing equipment of the present invention performs targeted shielding processing on areas with different leakage levels, thereby intercepting RFID signals into the equipment, thereby avoiding misidentification caused by the RFID clothing identification module detecting clothing outside the equipment. Optimized the intelligence level of clothing processing equipment.

Description

Clothes processing equipment and RFID signal shielding method

Technical field

The present invention relates to the technical field of clothing treatment equipment, and in particular to a clothing treatment equipment and an RFID signal shielding method thereof.

Background technique

Currently, some washing machines on the market are designed with intelligent washing programs to optimize their performance. For example, washing machines with RFID clothing identification modules are also loved by users. The RFID clothing identification module is mainly used to identify the tag information on the clothing to be washed during the weighing stage, and then select the corresponding washing program based on the obtained clothing information, thereby effectively improving the efficiency of the entire washing process, such as identifying the material of the clothing to be washed. Identifies and selects the least damaging wash program based on laundry information for all items of clothing. However, the RFID clothing recognition module may make misidentifications during the process of identifying clothing information. For example, the clothing worn by a user near the washing machine or the clothing stacked on the washing machine countertop is mistakenly identified as clothing to be washed, causing the washing machine to fail. The clothing information read and referenced is inaccurate, which affects the intelligent optimization level of the washing machine.

The existing solution is usually to set up a signal shielding structure on the periphery of the RFID identification module itself, so that the signal transmitted by the RFID identification module can only be transmitted to the inside of the drum, making it impossible to read the clothing information of the user close to the body. For example, the Chinese invention patent with the application number "CN200510014345.3" and the name "Washing Machine" discloses a washing machine. The washing machine is equipped with an isolation part around the radio frequency reader to prevent the signal sent by the radio frequency reader from being transmitted to Outside the body, however, this technical solution has the following problems: on the one hand, such a signal shielding solution will cause the RFID signal transmission range to be limited, and the clothing tags at the corners of the body may not be recognized; on the other hand, such a signal The shielding scheme has roughly the same degree of signal shielding for each part of the washing machine, and cannot target areas with different leakage levels.

Accordingly, this field needs a new clothing processing equipment and its RFID signal shielding method to solve the above problems.

Contents of the invention

In order to solve the above-mentioned problems in the prior art, the present invention provides a clothes processing device. The clothes processing device includes a box, an RFID identification module arranged inside the box, and an RFID identification module pivoted on the box. A door unit, a window screen is provided on the door unit, the RFID identification module is used to transmit RFID signals to obtain clothing information of the clothes to be washed, and the clothing processing equipment also includes a device for preventing at least part of the RFID signals. A first signal shield leaking through the window screen to the outside of the laundry treatment device.

In a preferred technical solution of the above-mentioned laundry treatment equipment, the first signal shielding part includes a shielding film disposed on the outer surface of the window screen.

In the preferred technical solution of the above-mentioned laundry treatment equipment, the shielding film is a PC film or a PMMA film.

In a preferred technical solution of the above-mentioned laundry treatment equipment, the shielding film further includes a metal film or metal compound film disposed on the PC film or the PMMA film.

In a preferred technical solution of the above-mentioned clothes treatment equipment, the clothes treatment equipment includes a door handle provided on the door unit, there is a gap between the door handle and the box body, and the clothes treatment equipment further includes a door handle. and a second signal shielding part for preventing at least part of the RFID signal from leaking to the outside of the laundry treatment device through the gap.

In a preferred technical solution of the above-mentioned laundry treatment equipment, the second signal shielding part is a shielding sleeve arranged outside the door handle and capable of completely covering the gap.

In a preferred technical solution of the above laundry treatment equipment, the box includes a countertop unit, and the laundry treatment equipment further includes a device for preventing at least a portion of the RFID signal from leaking to the laundry treatment equipment through the countertop unit. External third signal shielding section.

In a preferred technical solution of the above laundry treatment equipment, the third signal shielding part includes a signal shielding material provided on at least one side of the countertop unit.

In the preferred technical solution of the above clothes processing equipment, the countertop unit includes a countertop panel, a main control board and a joint area between the countertop panel and the main control board, and the third signal shielding part includes: Signal shielding material on the inside of the countertop, the main control board and the seam area.

The present invention provides an RFID signal shielding method for clothing processing equipment. The clothing processing equipment includes a box, an RFID identification module arranged inside the box, and a door unit pivotally arranged on the box. The door unit is provided with a window screen and a door handle, and there is a gap between the door handle and the box, and the box includes a countertop unit. The RFID signal shielding method includes: providing the window screen with Configuring a first signal shielding part; on the basis of forming the first signal shielding part, configuring a second signal shielding part for the door handle to cover the gap; before forming the second signal shielding part, at the same time, or After that, a third signal shielding part is configured for the mesa unit.

Since RFID signal leakage is mostly concentrated in the window screen, near the door handle and the countertop unit (mainly including the countertop, main control board and the joint area between the two), specifically, the window screen has a higher leakage probability and the window The screen area is larger, the door handle has the greatest leakage probability but the area is smaller, and the countertop unit has a larger area but the leakage probability is lower than the window screen. Therefore, the present invention performs different levels of shielding processing on the above-mentioned areas in a sequential and targeted manner based on the different degrees of leakage in the above-mentioned areas. Specifically, first, for the window screen, an area where RFID signal leakage is serious and has a large area, the clothes processing equipment of the present invention adds a first signal shielding part with good shielding performance on the window screen to prevent the RFID signal from passing through the clothes. The window screen of the equipment leaks to the outside of the clothing processing equipment, and the light transmittance needs to be ensured to ensure that the normal observation function of the window screen is not affected. Preferably, the first signal shielding part includes a transparent shielding film and a coating film, wherein the transparent shielding film can be but is not limited to PMMA film, PC film or automobile radiation protection film to maintain the flatness and transparency of the window screen surface; further preferably, in The surface of the PC film or PMMA film is further plated with a thin film composed of metal or its compounds to enhance the shielding effect.

In the preferred technical solution of the present invention, the present invention also specifically targets the door handle, the area with the highest leakage probability but a small area, for shielding to prevent the RFID signal from passing through the door handle and the door handle when the non-washed clothes are close to the door handle. Gaps between the boxes leak to the outside of the laundry disposal unit. Preferably, the second signal shielding part is a shielding sleeve disposed outside the door handle and capable of completely covering the gap, and the shielding sleeve can block a path for the RFID signal to leak outward through the gap, so as to further intercept the RFID signal.

After completing the shielding solution for window screens and door handles, a third signal shielding part can also be set for the countertop unit with relatively small RFID leakage and a large area to improve the shielding effect on RFID signals. Specifically, the third signal shielding part is a signal shielding material provided on at least one side of the mesa unit. For example, the third shielding part may include a first signal shielding material disposed on the outer surface of the main control board and covering the seam area, and a second signal shielding material disposed on the inside of the countertop, taking into account the areas between the countertop and the main control board. The leakage degree and structure are relatively similar, so the two shielding materials can be the same or different, and the shielding schemes and setting sequences of the two can be interchanged to a certain extent, as long as the shielding effect of this part is ensured.

The clothing processing equipment of the present invention performs targeted shielding treatment on areas with different leakage levels, so that the clothing processing equipment forms a structure with good shielding properties. Specifically, by performing different shielding on window screens, door handles and countertop units Horizontal processing, so that when the RFID clothing identification module located inside the equipment emits RFID signals to the outside, the clothing processing equipment of the present invention can basically intercept the RFID signals into the equipment, thereby preventing the RFID clothing identification module from detecting clothing outside the equipment. The resulting misidentification ensures that the RFID clothing identification module can only detect clothing information inside the clothing processing equipment, optimizing the intelligence level of the clothing processing equipment.

The present invention also provides an RFID signal shielding method for clothing processing equipment. The method prioritizes the above-mentioned RFID signal leakage areas according to the degree of RFID signal leakage, and shields the above-mentioned RFID signal leakage areas in order of priority to facilitate Gradually investigate the leakage paths of RFID signals, and selectively shield areas with different leakage levels to ensure that RFID signals are intercepted to the greatest extent to prevent them from leaking outside the device and causing misjudgment.

Description of the drawings

The laundry processing equipment and its RFID signal shielding method of the present invention will be described below with reference to the accompanying drawings and in conjunction with a side-loading drum washing machine. In the attached picture:

Figure 1 is a schematic structural diagram of a side-opening drum washing machine according to an embodiment of the present invention;

Figure 2 is a schematic flowchart of an RFID signal shielding method for a side-opening drum washing machine according to an embodiment of the present invention.

List of reference signs:

1. Cabinet; 2. Door unit; 11. Countertop unit; 21. Window screen; 22. Door handle; 111. Countertop panel; 112. Main control board.

Detailed ways

Preferred embodiments of the present invention will be described below with reference to the accompanying drawings. Those skilled in the art should understand that these embodiments are only used to explain the technical principles of the present invention and are not intended to limit the scope of the present invention. For example, although the present invention illustrates the technical solution of the present invention in conjunction with a side-opening drum washing machine, those skilled in the art can understand that the (first, second, and third) signal shielding parts can also be provided in other forms of washing machines. Clothes processing equipment, such as top-loading drum washing machines, pulsator washing machines, integrated washing and drying machines, etc., can be adjusted by those skilled in the art as needed to adapt to specific application situations.

It should be noted that in the description of the present invention, terms such as "inner" and "outer" indicate the direction or positional relationship based on the direction or positional relationship shown in the drawings. This is only for convenience of description, not Any indication or implication that a device or element must be oriented, constructed, and operate in a particular orientation is not to be construed as a limitation of the invention. Furthermore, the terms “first”, “second” and “third” are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In addition, it should be noted that in the description of the present invention, unless otherwise clearly stated and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense. For example, it can be a fixed connection or a fixed connection. It is a detachable connection or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be an internal connection between two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

Referring to Figure 1, Figure 1 is a schematic structural diagram of a side-opening drum washing machine according to an embodiment of the present invention. As shown in Figure 1, the washing machine mainly includes a box body 1, a door unit 2 pivotably disposed on the front panel of the box body 1, and a device disposed inside the box body 1 for transmitting RFID signals to obtain clothing information of the clothes to be washed. RFID identification module. Among them, the door unit 2 mainly includes an inner frame, a glass observation window, a middle frame, a window screen, and an outer frame arranged in sequence from the inside to the outside. Considering the integrity of the outer frame of the washing machine, a door handle 22 is provided on the inner frame. The door handle 22 There is usually a gap with the front panel of the box 1 to facilitate the use of the door handle 22. The box 1 also includes a countertop unit 11. The countertop unit 11 includes a countertop 111 located on the top of the cabinet 1, a main control board 112 disposed on the front and upper side of the cabinet 1, and a joint area between the countertop 111 and the main control board 112. . Since the identification signal of the RFID clothing identification module is relatively strong, other clothing outside the washing machine may be misidentified due to signal leakage when the RFID clothing identification module identifies the clothing information of the clothing to be washed.

Specifically, the inventor found in experiments that the misrecognition of clothing signals is mainly concentrated in areas such as in front of the window screen 21 of the washing machine, near the door handle 22, above the countertop 111 and in front of the main control board 112. On this basis, After many experiments, the inventor came to the following conclusion regarding the degree of signal leakage in each of the above areas: Clothing may be recognized within the range of 0 to 40cm in front of the window screen 21, and at a distance of 40cm from the window screen 21, the clothing may be recognized. The probability of being identified is about 50%; when the clothing is close to the gap between the door handle 22 and the box 1 and within the range of 0 to 5cm from the gap, the clothing is easily identified, and the probability of being identified is almost close to 100%. ; Above the main control board 112, the probability of the RFID tag being recognized is about 9.5%; above the countertop 111, the probability of the RFID tag being recognized is about 1%, and the probability of misidentification between the countertop and the main control board is Mainly for situations where the distance is small, such as clothes placed directly on the countertop and main control board. It can be seen that the above-mentioned areas are ordered from high to low according to the degree of leakage as the window screen 21, the door handle 22, the main control board 112 and the countertop 111. Since most of the RFID signal leakage is concentrated in the above-mentioned four areas, the washing machine of the present invention performs the following targeted shielding processing on the above-mentioned areas according to the different degrees of RFID signal leakage in the above-mentioned areas.

Considering that the window screen is the main area where RFID signals leak, shielding the area with the highest degree of RFID signal leakage will effectively reduce the probability of misidentification of clothing. Under this requirement, the washing machine also includes a window screen. The first signal shielding part on the screen 21, considering that the window screen 21 is set towards the user, the first signal shielding part includes a shielding film arranged on the outer surface of the window screen 21 to ensure the flatness of the outer surface of the window screen 21. Preferably, The shielding film is a transparent shielding film to ensure the transparency of the outer surface of the window screen 21 to avoid affecting the normal observation function of the window screen 21. As an example, PC or PMMA material can be plated on the outer surface of the window screen 21 to form a PC film or PMMA. The film is used to shield at least part of the RFID signal to reduce the probability of misidentification in the direction of the window screen. Furthermore, vacuum plating can be performed on the surface of the PC film or PMMA film to form a thin film composed of metal or its compounds, thereby further enhancing the shielding effect. Such a setting not only ensures good shielding performance, but also ensures that the observation performance of the window screen is not affected and the flatness of the outer surface of the door unit is ensured.

Those skilled in the art can understand that the type of shielding film is not limited to PC film, PMMA film or metal film, and can also be other types of shielding films. For example, a car radiation protection film can be pasted on the surface of the window screen 21 to thereby While achieving the signal shielding effect, it can also avoid window screen wear and increase the service life of the window screen 21, and the colorful automobile radiation protection film can also play a role in beautifying the window screen 21. Those skilled in the art can customize the second window screen according to actual needs. A signal shielding part is provided as long as it can reduce the probability of misrecognition in the direction of the window screen.

After adding the first signal shielding part to the window screen 21, the probability of misidentification in the direction of the window screen has been greatly reduced. However, considering that the gap between the box 1 and the door handle 22 is also a high-risk area for misidentification of clothing, in the optimization solution of the present invention, the washing machine also specifically performs a shielding process for this area. Specifically, the washing machine It also includes a second signal shielding part for preventing the RFID signal from leaking to the outside of the washing machine through the gap. In a specific implementation, as shown in FIG. 1 , the door handle 22 has a built-in structure, and the second signal shielding part is The shielding sleeve is a shielding sleeve arranged outside the door handle 22 and completely covering the gap between the door handle 22 and the box 1, such as a radiation-proof silicone door handle cover, so as to block the leakage of the shielded RFID signal, and the shielding sleeve also protects the door handle 22 It has a certain identification and protection function, that is, the shielding sleeve placed outside the door handle can prevent external wear and tear on the door handle 22, and the shielding sleeve with a special appearance can also facilitate reminding the user of the position of the door handle 22.

The first shielding part and the second shielding part ensure the shielding performance in serious leakage areas. On this basis, in a preferred embodiment of the present invention, a third signal shielding part is provided on the table unit 11 with a relatively low probability of misidentification. For example, the third signal shielding part may be provided on the table panel 111 and the main control unit 11 . Signal shielding material on at least one side of the board 112. As a preferred example, metal shielding materials can be provided on the inside of the countertop 111, the main control board 112 and the joint area between the two. For example, a metal shielding material can be provided on the countertop 111. 111 and the inside of the joint area between the two are pasted with aluminum foil tape, and the outside or inside of the main control board 112 is sprayed with metallic paint.

Those skilled in the art can understand that, in addition to using the above-mentioned metal shielding materials, the third signal shielding part can also use a shielding form of non-metallic materials with shielding function, such as providing radiation protection cloth on the inside of the table panel 111 . In addition, the third signal shielding part is not limited to being provided on the inside of the table panel 111, the main control board 112 and the joint area between them. For example, the third signal shielding part may also be a shielding part provided on the outside of the main control board 112. Radiation polymer film, etc., or different forms of shielding structures are provided on the inside and outside of the main control board. In short, those skilled in the art can reasonably set up the third signal shielding part according to actual needs, as long as it can reduce the misidentification of the table unit. Just probability.

Correspondingly, the present invention also provides an RFID signal shielding method for clothing processing equipment, so as to improve the shielding performance of the washing machine according to the different leakage degrees of the aforementioned RFID signal leakage areas. Specifically, referring to Figure 2, Figure 2 is a schematic flow chart of an RFID signal shielding method for a side-opening drum washing machine according to an embodiment of the present invention. As shown in Figure 2, this method includes:

S10. For the window screen area where RFID signal leakage is the most serious, first configure the first signal shielding part for the window screen of the clothing processing equipment to greatly reduce the degree of RFID signal leakage and effectively reduce the probability of misidentification, such as on the window screen Provide a shielding film or directly use shielding materials to make window screens.

The initial treatment of the first window screen avoids damage or interference to the first shielding part by subsequent shielding processes, effectively ensuring that the first shielding part can achieve expected good shielding performance.

S20. After the first signal shielding part is formed, for the area near the gap between the door handle and the box where RFID signal leakage is relatively serious, configure a second signal shielding part for the door handle of the clothing processing equipment to cover the door handle and the box. The gap between the door handle can further reduce the probability of misidentification. For example, a radiation-proof silicone door handle glove is placed on the outside of the door handle, and the radiation-proof silicone door handle glove can completely cover the gap between the door handle and the box to prevent The RFID signal leaks to the outside of the laundry treatment device through the gap between the door handle and the box.

The targeted setting of the second shielding part ensures the shielding performance of tiny areas that are often overlooked by users and manufacturers, and such targeted setting can avoid the problem of almost 100% misidentification probability once signal leakage occurs in this area. .

Before, at the same time or after (such as after) the second signal shielding part is formed, for the countertop unit with a low probability of misidentification, a third signal shielding part is configured for the countertop unit of the laundry treatment equipment to ensure that the RFID signal can reach the maximum range. is intercepted within the device. As a specific example, the main control board can be shielded first, and then the countertop can be shielded, and the seam area between the two can be taken into consideration while shielding the main control board. However, since the leakage probability of the third shielding part is obviously low, the processing method is more flexible.

It should be understood that the above processing sequence is for the overall process of processing the washing machine, and is only for the order of adding the shielding structure on the premise of ignoring the processes of other parts of the washing machine. For example, in a specific embodiment, after the washing machine has been processed and formed, the shielding performance of the washing machine can be improved according to the above sequence.

So far, the technical solution of the present invention has been described with reference to the preferred embodiments shown in the drawings. However, those skilled in the art can easily understand that the protection scope of the present invention is obviously not limited to these specific embodiments. Without departing from the principles of the present invention, those skilled in the art can make equivalent changes or substitutions to relevant technical features, and technical solutions after these modifications or substitutions will fall within the protection scope of the present invention.

Claims (8)

1. A clothes processing equipment, the clothes processing equipment includes a box body, an RFID identification module arranged inside the box body, and a door unit pivotally arranged on the box body, and a window is provided on the door unit. screen, the RFID identification module is used to transmit RFID signals to obtain clothing information of the clothes to be washed, wherein the laundry processing device also includes a device for preventing at least a part of the RFID signal from leaking to the window screen through the window screen. a first signal shielding portion external to the laundry treatment device; The laundry treatment equipment includes a door handle provided on the door unit, and there is a gap between the door handle and the box body, The laundry treatment device further includes a second signal shielding portion for preventing at least a portion of the RFID signal from leaking to the outside of the laundry treatment device through the gap; The box includes a countertop unit, and the laundry treatment device further includes a third signal shielding portion for preventing at least a portion of the RFID signal from leaking to the outside of the laundry treatment device through the countertop unit. 2. The laundry treatment equipment according to claim 1, wherein the first signal shielding part includes a shielding film disposed on the outer surface of the window screen. 3. The clothing treatment equipment according to claim 2, characterized in that the shielding film is a PC film or a PMMA film. 4. The laundry treatment equipment according to claim 3, wherein the shielding film further includes a metal film or a metal compound film disposed on the PC film or the PMMA film. 5. The laundry processing equipment according to claim 1, wherein the second signal shielding part is a shielding sleeve disposed outside the door handle and capable of completely covering the gap. 6. The laundry treatment apparatus according to claim 1, wherein the third signal shielding part includes a signal shielding material disposed on at least one side of the countertop unit. 7. The laundry processing equipment according to claim 6, wherein the countertop unit includes a countertop, a main control board and a seam area between the countertop and the main control board, and the third The signal shielding department includes: Signal shielding material provided on the inside of the table panel, the main control board and the seam area. 8. An RFID signal shielding method for clothing processing equipment. The clothing processing equipment includes a box, an RFID identification module arranged inside the box, and a door unit pivotally installed on the box. The door The unit is provided with a window screen and a door handle, there is a gap between the door handle and the box, and the box includes a countertop unit, characterized in that the RFID signal shielding method includes: Configuring a first signal shielding part for the window screen; On the basis of forming the first signal shielding part, configuring a second signal shielding part for the door handle to cover the gap; Before, at the same time or after forming the second signal shielding part, a third signal shielding part is configured for the mesa unit.