Seat heating switch and display method and system thereof

Abstract

The application provides a seat heating switch and a display method and system thereof. The method comprises: a user touching the seat heating switch to generate a touch instruction; determining whether the capacitance change triggered by the touch instruction reaches a preset threshold; when the preset threshold is reached, determining the heating gear of the seat heating switch; after the heating gear is determined, the seat starts heating, and the seat heating switch displays the heating state and the heating gear. The seat heating switch adopts a panel and a display screen. The user sends an operation instruction through the panel, and then realizes the seat heating function through the judgment of capacitive sensing, the judgment of child lock locking, and the judgment of the whole vehicle energy, and displays the seat heating opening result through the display screen. The structure is simple, the operation is comfortable and light, the durability is good, the gear display is clear and intuitive, the whole vehicle seat heating child lock related function operation can be realized, and the seat heating function system implementation scheme is beautiful, comfortable, safe, and energy-saving.

Description

Technical Field

[0001] This application relates to the field of vehicle seat technology, and more specifically, to a seat heating switch and its display method and system. Background Technology

[0002] Seat heating is an important function for adjusting the comfort of the driving and riding environment. Existing technical solutions mostly involve mechanical button switches / knobs set on the center console. The mechanical structure moves to turn the internal circuit structure on / off, thereby sending a heating signal and starting the seat to heat up.

[0003] In the prior art, mechanical push-button switches are used by pressing the switch button, which moves the button structure to press down the micro switch. The micro switch is turned on and converts the operation signal into an electrical signal, which is then sent to the seat heating controller. The internal MOSFET drives the seat heating current output to heat the seat.

[0004] Mechanical button switches have a complex mechanical structure, low technological feel, poor water resistance, and reduced durability and user experience after repeated use.

[0005] Therefore, this application provides a seat heating switch method to solve one of the above-mentioned technical problems. Summary of the Invention

[0006] The purpose of this application is to provide a seat heating switch and its display method and system, which can solve at least one of the technical problems mentioned above. The specific solution is as follows:

[0007] According to a specific embodiment of this application, in a first aspect, this application provides a method for displaying a seat heating switch, comprising the following steps:

[0008] The user touches the seat heating switch, generating a touch command;

[0009] Determine whether the capacitance change triggered by the touch command reaches a preset threshold;

[0010] When the preset threshold is reached, the heating level of the seat heating switch is determined.

[0011] Once the heating level is determined, the seat begins to heat up, and the seat heating switch displays the heating status and heating level.

[0012] By adopting the above technical solution, users only need to touch the seat heating switch to turn on the seat heating function, without pressing it, which eliminates the need for repeated pressing and increases the durability of the switch. Furthermore, when the seat heating function is turned on, it will be displayed on the seat heating switch, making it easy for users to know that the heating function has been turned on and to know the heating level, thus improving the user experience.

[0013] Optionally, before the user touches the seat heating switch to generate a touch command, the process includes: turning on the seat heating switch, the steps of which include:

[0014] The seat heating switch is initially in the off state;

[0015] Turn on the seat heating switch. The seat heating switch will be in the on state. At this time, the heating function is not turned on, but the seat heating switch will show that it is on.

[0016] With the above technical solution, the heating switch can only be used after being powered on. Users can judge whether it is powered on by the display of the seat heating switch. When the display shows that the seat heating switch is on, users can use the seat heating switch to heat the seat.

[0017] Optionally, after the capacitance change reaches a preset threshold, it is determined whether the child lock of the seat heating switch is in the locked state. If it is in the unlocked state, the gear position is determined.

[0018] By adopting the above technical solution, the child lock function is checked before seat heating is activated. Seat heating is activated when the child lock is in the unlocked state, and not when the child lock is in the locked state, to prevent accidental operation by children. At the same time, all heating functions of the whole vehicle can be turned off with one button, achieving the purpose of energy saving of the whole vehicle.

[0019] Optionally, the gear selection includes:

[0020] Determine whether the vehicle is in an energy-limited state;

[0021] When not in an energy-constrained state, the corresponding heating level is activated based on the energy status of the entire vehicle.

[0022] By adopting the above technical solution, it is determined whether the energy status of the whole vehicle is sufficient to turn on the seat heating function. Then, the corresponding heating level is turned on according to the energy status of the whole vehicle, so that the heating of the seat depends on the energy status of the whole vehicle and avoids affecting other functions in the vehicle.

[0023] According to a specific embodiment of this application, in a second aspect, this application provides a seat heating switch display system, comprising:

[0024] The trigger module is used to receive user touches and generate touch commands;

[0025] The seat heating control module determines whether the capacitance change triggered by the touch command reaches a preset threshold; when the preset threshold is reached, it determines the heating level of the seat heating switch.

[0026] After the heating level is determined, the display module shows the heating status and heating level of the seat heating switch when the seat starts heating.

[0027] Optionally, it also includes a power-on module, wherein before the user touches the seat heating switch to generate a touch command, the process includes: turning on the seat heating switch, the steps of which include,

[0028] The seat heating switch is initially in the off state;

[0029] When the power-on module supplies power to the seat heating switch, the seat heating switch enters the on state. At this time, the heating function is not turned on, but the seat heating switch displays that it is on.

[0030] Optionally, it also includes an infotainment control module, which determines whether the child lock of the seat heating switch is in the locked state after the capacitance change reaches a preset threshold. If it is in the unlocked state, the gear position is then determined.

[0031] Optionally, the gear selection includes:

[0032] Determine whether the vehicle is in an energy-limited state;

[0033] When not in an energy-constrained state, the corresponding heating level is activated based on the energy status of the entire vehicle.

[0034] According to a specific embodiment of this application, in a third aspect, this application provides a seat heating switch, including: a housing, a panel, a display screen, a capacitive sensing diaphragm, and a main circuit board.

[0035] The housing has an opening on one side, and the display screen, capacitive sensing diaphragm, and main circuit board are all disposed inside the housing. The panel is disposed at the opening of the housing, and the side of the display screen that displays information is disposed close to the panel. The capacitive sensing diaphragm is disposed between the panel and the display screen, and the circuit board is disposed on the side of the display screen away from the panel.

[0036] It is connected to both the capacitive sensing diaphragm and the display screen to receive touch commands and control the display screen. The main circuit board is connected to the seat heating control module for display control of the seat heating switch.

[0037] By adopting the above technical solution, the seat heating switch senses the user's command through a capacitive sensing diaphragm, controls the operation of the entire seat heating switch through the main circuit board, and displays the control of the seat heating switch through the display screen. It does not require a complex mechanical structure, avoids the durability problem of buttons, and improves the user experience.

[0038] Optionally, an electrostatic discharge shield may also be included, which is disposed between the display screen and the main circuit board.

[0039] Compared with the prior art, the above-described solutions of this application have at least the following beneficial effects:

[0040] The seat heating switch uses a panel and a display screen. Users send operation commands through the panel, and the seat heating function is activated by judging the capacitive sensing, the child lock engagement, and the vehicle's overall energy. The result of the seat heating being activated is displayed on the screen. The structure is simple, the operation is comfortable and easy, the durability is good, and the gear display is clear and intuitive. At the same time, it can realize the operation of related functions of the vehicle's seat heating and child lock, realizing a beautiful, comfortable, safe, and energy-saving seat heating system solution. Attached Figure Description

[0041] Figure 1 A structural diagram of a seat heating switch according to an embodiment of this application is shown;

[0042] Figure 2 A circuit diagram of a seat heating switch according to an embodiment of this application is shown;

[0043] Figure 3 A unit block diagram of a seat heating switch display system according to an embodiment of this application is shown;

[0044] Figure 4 A signal transmission diagram of a seat heating switch display system according to an embodiment of this application is shown;

[0045] Figure 5 A flowchart of a seat heating switch display method according to an embodiment of this application is shown;

[0046] Figure 6 It shows that according to Figure 5 Functional logic flow diagram.

[0047] Reference numerals: 100, outer casing; 200, panel; 300, display screen; 400, capacitive sensing diaphragm; 500, main circuit board; 600, electrostatic protective cover. Detailed Implementation

[0048] To make the objectives, technical solutions, and advantages of this application clearer, the application will be further described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0049] The terminology used in the embodiments of this application is for the purpose of describing particular embodiments only and is not intended to limit the application. The singular forms “a,” “said,” and “the” used in the embodiments of this application and the appended claims are also intended to include the plural forms, and “multiple” generally includes at least two unless the context clearly indicates otherwise.

[0050] It should be understood that the term "and / or" used in this article is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, and B existing alone. Additionally, the character " / " in this article generally indicates that the preceding and following related objects have an "or" relationship.

[0051] It should be understood that although the terms first, second, third, etc., may be used in the embodiments of this application, these descriptions should not be limited to these terms. These terms are only used to distinguish the descriptions. For example, first may also be referred to as second without departing from the scope of the embodiments of this application, and similarly, second may also be referred to as first.

[0052] Depending on the context, the words “if” or “suppose” as used here can be interpreted as “when” or “in response to determination” or “in response to detection.” Similarly, depending on the context, the phrases “if determination” or “if detection (of the stated condition or event)” can be interpreted as “when determination” or “in response to determination” or “when detection (of the stated condition or event)” or “in response to detection (of the stated condition or event).”

[0053] It should also be noted that the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that an article or device that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such an article or device. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the article or device that includes said element.

[0054] It should be noted that any symbols and / or numbers present in the specification that are not marked in the accompanying drawings are not reference numerals.

[0055] The optional embodiments of this application are described in detail below with reference to the accompanying drawings.

[0056] like Figure 1 As shown, this application provides a seat heating switch. The seat heating switch can be installed in any location inside the vehicle. In this embodiment, it is installed in both the front and rear seats, allowing users to easily turn it on at their own discretion. The installation method is very flexible. The seat heating switch includes:

[0057] The outer casing 100 has an opening on one side. In this embodiment, it adopts a hollow cuboid shape. The outer casing 100 is divided into a bottom shell and a side shell, which are joined together to support the entire switch.

[0058] A panel 200 is disposed at the opening of the housing 100 and covers the opening of the housing 100. In this embodiment, an IML panel 200 is used.

[0059] The display screen 300 is housed within the casing 100, with the side of the display screen 300 positioned close to the panel 200. The display area is exposed to the user's view via the panel 200. When not powered on, the display screen 300 is hidden and displays a completely black image. Upon power-up, the display screen 300 uses a monochrome LCD to display heating characters and heating levels, showing two oppositely positioned white seat icons. When the seat heating function is activated, a partial silkscreen printing scheme on the monochrome LCD is used to achieve a red display effect. One or more red arrows are displayed around each white seat heating icon, with each icon and its surrounding red arrows forming a group. The number of red arrows in each group represents the heating level. This eliminates the need for a multi-color device, achieving a low-cost multi-color display solution.

[0060] LCD stands for Liquid Crystal Display. An LCD is constructed by placing a liquid crystal cell between two parallel glass substrates. A TFT (Thin Film Transistor) is placed on the lower glass substrate, and a color filter is placed on the upper glass substrate. By changing the signal and voltage on the TFT, the rotation direction of the liquid crystal molecules is controlled, thereby controlling whether polarized light is emitted from each pixel to achieve the display purpose.

[0061] A capacitive sensing diaphragm 400, used to activate the user's switch, is located inside the housing 100, between the display screen 300 and the panel 200, in contact with both the display screen 300 and the panel 200, without obstructing the display position of the display screen 300.

[0062] The main circuit board 500 is located inside the housing 100 on the side of the display screen 300 away from the panel 200. It is connected to both the capacitive sensing diaphragm 400 and the display screen 300. It is used to receive touch commands and control the display screen 300. The main circuit board 500 is connected to the seat heating control module and is used to send touch commands and receive display control commands for display control of the seat heating switch.

[0063] An electrostatic discharge shield 600 is disposed inside the housing 100 and between the display screen 300 and the main circuit board 500 to prevent static electricity from accumulating on the display screen 300 and the main circuit board 500.

[0064] like Figure 2The circuit principle of the seat heating switch is as follows: the MCU control unit acts as the main control unit and is connected to the power supply voltage detection module to ensure that the display is only activated when the vehicle is in motion; the LCD driver of the LCD display 300 communicates with the MCU via the I2C bus to realize the drive control of the display 300; a touch IC is used to connect to the switch, and the touch IC communicates with the MCU via the I2C bus to realize the acquisition and judgment of touch commands; a connection is established with the LIN transceiver using TXD and RXD connection methods to send the seat heating command through the LIN bus.

[0065] The connection method of TXD and RXD refers to the connection of the MCU's TXD with the RXD of the LIN transceiver, and the connection of the MCU's RXD with the TXD of the LIN transceiver, in order to realize the function of signal transmission and reception.

[0066] When seat heating is needed, the system first checks if the display screen 300 shows an icon to determine if the vehicle is powered on. If the vehicle is not powered on, the system starts to power on the seat heating switch. Then, the user touches the panel 200. The capacitive sensing diaphragm 400 detects the touch and generates a trigger command, which is transmitted to the seat heating control module via the main circuit board 500. The seat heating control module then determines the trigger and generates a display control command, which is sent back to the main circuit board 500. The main circuit board 500 then controls the display screen 300 to display the heating information. The user can check on the display screen 300 whether the heating function has been successfully activated and can indicate the heating level by the number of arrows.

[0067] like Figure 3 As shown, this application provides a seat heating switch display system, including:

[0068] The trigger module is used to receive user touches and generate touch commands;

[0069] The seat heating control module determines whether the capacitance change triggered by the touch command reaches a preset threshold; when the preset threshold is reached, the heating level of the seat heating switch is determined; this module includes the main circuit board 500 of the seat heating switch and the seat environment controller, wherein the capacitance is determined by the main circuit board 500 and the heating level is determined by the seat environment controller.

[0070] After the heating level is determined, the display module shows the heating status and heating level of the seat heating switch when the seat starts heating.

[0071] The power-on module, before the user touches the seat heating switch to generate a touch command, includes: turning on the seat heating switch, the steps of which include: the seat heating switch is initially in a closed state; the power-on module supplies power to the seat heating switch, the seat heating switch enters the open state, at which time the heating function is not turned on, and the seat heating switch displays that it is turned on.

[0072] The infotainment control module, including the infotainment controller, determines whether the child lock on the seat heating switch is engaged when the capacitance change reaches a preset threshold. If the child lock is engaged, the controller then determines the appropriate heating level. The level determination includes: determining whether the vehicle is in a power-limited state; if not, it activates the corresponding heating level based on the vehicle's power status.

[0073] like Figure 4 The seat heating switch transmits seat heating commands to the infotainment controller via the LIN bus. The infotainment controller transmits seat heating signals when the child lock is not engaged to the seat environment controller via the CAN bus. The seat environment controller drives the seat heating pad to start heating via hard-wired current and simultaneously transmits the heating level information to the infotainment controller via the CAN bus. The infotainment controller then transmits the heating level information to the seat heating switch via the LIN bus for display.

[0074] Reference Figure 1 and Figure 4 The seat heating switch panel 200 consists of an IML dual-color injection molded panel 200, a capacitive sensing diaphragm 400, an LCD display screen 300 and a drive module, a main circuit board 500, a housing 100, and a bottom shell. Initially, the switch is completely black and invisible. Upon power-up, the LCD lights up. When the seat beacon on the panel 200 is touched, the capacitive diaphragm senses the change in capacitance. When a preset threshold is reached, a seat heating command is transmitted to the infotainment controller (IVI) via the LIN bus. The IVI calls the main program to confirm whether the seat heating switch is in a child lock disabled state. If the determination is successful, the seat heating signal is transmitted to the seat heating controller (SCCU) via the CAN line. The SCCU determines whether the vehicle is in an energy-limited state and drives the corresponding seat heating level based on the determination result. Simultaneously, it transmits the current heating level to the IVI via the CAN line. The IVI then transmits the signal to the seat heating switch via the LIN line. Upon receiving the signal, the seat heating switch illuminates the corresponding level indicator arrow, completing one seat heating function adjustment and display.

[0075] This application also provides method embodiments that follow the above embodiments. The interpretation of the same names is the same as in the above embodiments, and they have the same technical effects. Therefore, further details will not be provided here.

[0076] The embodiments provided in this application are embodiments of a method for displaying a seat heating switch.

[0077] The following is combined Figure 5 The embodiments of this application will be described in detail.

[0078] A method for displaying a seat heating switch includes the following steps:

[0079] Step S100: Turn on the seat heating switch; the steps include,

[0080] The seat heating switch is initially in the off state; the seat heating switch can only be used after power is applied. When not powered on, the seat heating switch is completely black and does not display any icon status.

[0081] When the seat heater switch is powered on, it enters the "on" state. At this time, the heating function is not activated, but the seat heater switch display shows that it is on. In this embodiment, the seat heater switch displays two opposite white seat icons, indicating that the seat heater switch is on.

[0082] In step S200, the user touches the seat heating switch to generate a touch command;

[0083] Step S300: Determine whether the capacitance change triggered by the touch command reaches a preset threshold. The preset threshold is set to a threshold range, within which it indicates that the user wants to turn on the seat heating switch, thus avoiding accidental touches and improving the user experience.

[0084] Step S400: When the preset threshold is reached, the heating level of the seat heating switch is determined; after the capacitance change reaches the preset threshold, it is determined whether the seat heating switch is in the child lock state. If it is in the non-lock state, the level is determined again, which means that in the child lock state, all heating behaviors cannot be realized.

[0085] The heating mode determination includes: determining whether the vehicle is in an energy-limited state; if not in an energy-limited state, driving the corresponding heating mode according to the vehicle's energy status. The highest heating mode can be activated based on the current energy status, which the user can see on the display screen 300. The user can then change the heating mode via touch operation. In this embodiment, two opposite white seat icons can be set, one for increasing the heating mode and the other for decreasing it. When the vehicle is in the highest energy-limited mode, touching the "increase" button will not result in an increase in the heating mode.

[0086] In step S500, after the heating level determination is completed, the seat starts heating, and the seat heating switch displays the heating status and heating level. In this embodiment, a red indicator arrow is displayed around each white seat icon, and the number of red indicator arrows represents the heating level.

[0087] Reference Figure 6The specific procedure for using the seat heating switch is as follows: The seat heating switch features a black integrated display. The user first starts the vehicle. Upon powering on, the seat heating switch completes initialization and displays a white seat icon. The user then touches the seat heating switch. The capacitive sensing diaphragm 400 detects a change in capacitance. The main circuit board 500 analyzes this change. When the capacitance change is within a preset threshold range, a switch operation signal is sent via the LIN bus. The infotainment controller receives the signal and determines if the child lock is engaged. If engaged, no signal is processed. If disengaged, a switch operation signal is sent via the CAN bus. The seat environment controller receives the signal and determines if the vehicle's energy is limited. Based on the determination, the seat heating pad is activated. Simultaneously, the seat environment controller sends heating level information via the CAN bus. The infotainment controller receives this information and sends it to the seat heating switch, illuminating the indicator arrow on the display screen 300. The user can then view the seat heating switch's activation status and level information on the display screen 300.

[0088] In summary, the main features of this invention are: simple structure, comfortable and lightweight operation, good durability, clear and intuitive gear display, low cost, and the ability to implement child lock functions for vehicle seat heating, achieving a beautiful, comfortable, safe, and energy-saving seat heating system. It adopts a capacitive switch principle, using non-mechanical contact operation to increase durability; a monochrome LCD is used as the display structure for heating characters and heating gears, integrating seat heating operation indicators and beacon patterns for easy identification; a monochrome LCD partial silkscreen printing scheme achieves a red display effect, realizing a low-cost multi-color display solution; updated network topology, implementing child lock function through the master node program to prevent accidental operation by children, and enabling one-button shutdown of all heating functions for the entire vehicle, achieving energy saving; expandable functionality to implement other switching functions, such as gear increase / decrease functions; and an integrated black IML film design on the surface, with the beacon hidden when not powered on, enhancing the sense of technology and quality. The structure is simple.

[0089] The above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application.

Claims

1. A method for displaying a seat heating switch, characterized in that, Includes the following steps: The user touches the seat heating switch, generating a touch command; Determine whether the capacitance change triggered by the touch command reaches a preset threshold; When the preset threshold is reached, the heating level of the seat heating switch is determined. After the heating level is determined, the seat starts heating, and the seat heating switch displays the heating status and heating level. The seat heating switch includes: a housing (100), a panel (200), a display screen (300), a capacitive sensing diaphragm (400), and a main circuit board (500). The outer casing (100) has an opening on one side. The display screen (300), the capacitive sensing diaphragm (400), and the main circuit board (500) are all disposed inside the outer casing (100). The panel (200) is disposed at the opening of the outer casing (100). The side of the display screen (300) that displays is disposed close to the panel (200). The capacitive sensing diaphragm (400) is disposed between the panel (200) and the display screen (300). The main circuit board (500) is disposed on the side of the display screen (300) away from the panel (200). The main circuit board (500) is connected to both the capacitive sensing diaphragm (400) and the display screen (300) for receiving touch commands and controlling the display screen (300). The main circuit board (500) is also connected to the seat heating control module for displaying and controlling the seat heating switch.

2. The method according to claim 1, characterized in that, Before the user touches the seat heating switch to generate a touch command, the process includes: turning on the seat heating switch, the steps of which include, The seat heating switch is initially in the off state; Turn on the seat heating switch. The seat heating switch will be in the on state. At this time, the heating function is not turned on, but the seat heating switch will show that it is on.

3. The method according to claim 1, characterized in that, Once the capacitance change reaches a preset threshold, it is determined whether the child lock of the seat heating switch is in the locked state. If it is in the unlocked state, the gear position is then determined.

4. The method according to any one of claims 1 or 3, characterized in that, The gear selection includes: Determine whether the vehicle is in an energy-limited state; When not in an energy-constrained state, the corresponding heating level is activated based on the energy status of the entire vehicle.

5. The method according to claim 1, characterized in that, The seat heating switch also includes an electrostatic shield (600), which is disposed between the display screen (300) and the main circuit board (500).

6. A seat heating switch display system, characterized in that, include: The trigger module is used to receive user touches and generate touch commands; The seat heating control module determines whether the capacitance change triggered by the touch command reaches a preset threshold. When the preset threshold is reached, the heating level of the seat heating switch is determined. After the heating level is determined, the display module displays the heating status and heating level of the seat heating switch when the seat starts heating. The seat heating switch includes: a housing (100), a panel (200), a display screen (300), a capacitive sensing diaphragm (400), and a main circuit board (500). The outer casing (100) has an opening on one side. The display screen (300), the capacitive sensing diaphragm (400), and the main circuit board (500) are all disposed inside the outer casing (100). The panel (200) is disposed at the opening of the outer casing (100). The side of the display screen (300) that displays is disposed close to the panel (200). The capacitive sensing diaphragm (400) is disposed between the panel (200) and the display screen (300). The main circuit board (500) is disposed on the side of the display screen (300) away from the panel (200). The main circuit board (500) is connected to both the capacitive sensing diaphragm (400) and the display screen (300) for receiving touch commands and controlling the display screen (300). The main circuit board (500) is also connected to the seat heating control module for displaying and controlling the seat heating switch.

7. The system according to claim 6, characterized in that, It also includes a power-on module, and before the user touches the seat heating switch to generate a touch command, the process includes: turning on the seat heating switch, the steps of which include, The seat heating switch is initially in the off state; When the power-on module supplies power to the seat heating switch, the seat heating switch enters the on state. At this time, the heating function is not turned on, but the seat heating switch displays that it is on.

8. The system according to claim 6, characterized in that, It also includes an infotainment control module, which determines whether the child lock of the seat heating switch is in the locked state after the capacitance change reaches a preset threshold. If it is in the unlocked state, the gear position is then determined.

9. The system according to any one of claims 6 or 8, characterized in that, The gear selection includes: Determine whether the vehicle is in an energy-limited state; When not in an energy-constrained state, the corresponding heating level is activated based on the energy status of the entire vehicle.

10. The system according to claim 6, characterized in that, The seat heating switch also includes an electrostatic shield (600), which is disposed between the display screen (300) and the main circuit board (500).

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