Pneumatic massage control system for seat

Abstract

The invention discloses a pneumatic massage control system for a seat, and the system comprises an independent air source which is connected with a main valve and an auxiliary valve through a common air path, forms a one-to-one correspondence relationship with the main valve, and is only controlled by the corresponding main valve; the main valve is in communication connection with the auxiliary valves and controls the main valve and the auxiliary valves to execute inflation and deflation according to the massage point position sequence; and the auxiliary valve only analyzes and executes the command of the main valve and feeds back working parameters of the auxiliary valve to the main valve. The main valve serves as a controller, the auxiliary valve serves as an actuator, and the technical problem that a single valve cannot drive enough massage air bags is solved. Moreover, when a plurality of valves work cooperatively, the main valve coordinates the massage point sequence of the air pump and the massage point sequence of each auxiliary valve as a whole, and the massage function of more than 20 massage points can be achieved. Due to the fact that the main valve and the auxiliary valve are communicated through the standard LIN protocol, the communication rate is 19.2 kbps, real-time interaction between the main valve and the auxiliary valve is guaranteed, the response speed is within 10 ms, and therefore the passenger side can have very smooth multi-point massage experience.

Description

Technical Field

[0001] The invention relates to the field of automobiles, and in particular to a seat pneumatic massage control system. Background Art

[0002] With the enrichment of car-mounted functions, the cockpit entertainment system has become more and more abundant, and the pneumatic seat massage function has gradually increased to meet the comfort needs of passengers. The pneumatic seat massage system is a car seat function that provides comfort and relieves driving fatigue. It usually consists of the following main components:

[0003] 1. Air pump: As the air source of the system, the air pump is responsible for providing compressed air, which is the basis for the operation of the pneumatic massage system.

[0004] 2. Pressure-dividing valve: The function of the pressure-dividing valve is to distribute the compressed air generated by the air pump to different air bags in the seat as needed to control the inflation and deflation of the air bags.

[0005] 3. Airbags: These airbags are placed in specific areas of the seat, such as the waist, shoulders, side support, etc., and achieve massage and support functions by inflating and deflating. The degree of inflation and deflation of the airbags can be precisely adjusted through electronic control to adapt to the body curves and needs of different passengers.

[0006] 4. Controller*: The controller is responsible for receiving input instructions from the user and controlling the operation of the air pump and the pressure-dividing valve to adjust the air pressure of the air bag to achieve different massage modes and intensities.

[0007] 5. User interface: Users can interact with the system through physical buttons, touch panels, mobile phone apps or voice control to set parameters such as massage mode, strength and time.

[0008] The main functional features of the pneumatic massage seat include precise support, multi-directional adjustment, massage function and intelligent control. It can provide precise lumbar support according to the driver or passenger's waist curve and sitting posture changes, effectively relieving waist fatigue caused by long-term driving or riding. Through the periodic changes in air pressure, the pneumatic lumbar support can simulate the effect of manual massage, kneading and massaging the waist muscles, promoting blood circulation, and relieving muscle tension and soreness.

[0009] At present, due to the limitation of MCU resources and the problem of control complexity, the pneumatic massage systems on the market can generally only support massage of 10 points or less, and cannot cover all parts of the passenger's body, and lack of comfort.

[0010] To break through the limitation of insufficient massage points, the pneumatic seat massage system needs to support more than 20 massage points to meet the needs of passengers for full-body massage and achieve maximum comfort of seat massage. However, the pneumatic seat massage system that provides more than 20 massage points has the following technical problems to be solved:

[0011] (1) On seats with many massage points, a single valve cannot drive a sufficient number of massage air bags.

[0012] (2) When multiple valves work together, it is difficult to coordinate the massage point sequence of the air pump and the air valve.

[0013] Therefore, there is an urgent need for a seat pneumatic massage system that can solve the above technical problems and provide more than 20 massage points. Summary of the invention

[0014] A series of simplified concepts are introduced in the Summary of the Invention, which are all simplifications of the prior art in the field, and will be further described in detail in the Detailed Description of the Invention. The Summary of the Invention of the present invention does not mean to attempt to define the key features and essential technical features of the claimed technical solution, nor does it mean to attempt to determine the scope of protection of the claimed technical solution.

[0015] The technical problem to be solved by the present invention is to provide a seat pneumatic massage system which can solve the technical problems existing in the prior art and provide more than 20 massage points.

[0016] In order to solve the above technical problems, the present invention provides a seat pneumatic massage control system, comprising:

[0017] Independent gas source, which connects the main valve and the auxiliary valve through a common gas path, forms a one-to-one correspondence with the main valve, and is only controlled by the corresponding main valve;

[0018] The main valve is in communication with the auxiliary valve, and controls itself and the auxiliary valve to perform inflation and deflation according to the massage point sequence;

[0019] The auxiliary valve only analyzes and executes the main valve command, and feeds back its own working parameters to the main valve.

[0020] Preferably, the seat pneumatic massage control system is further improved so that the main valve and the auxiliary valve communicate via LIN.

[0021] Preferably, the seat pneumatic massage control system is further improved, and the working parameters include: the opening and closing state of the solenoid valve, the current value of the solenoid valve, the power supply voltage value and the valve working temperature value.

[0022] Preferably, the seat pneumatic massage control system is further improved, the main valve determines the working state of the auxiliary valve according to the working parameters fed back by the auxiliary valve, decides whether to stop working synchronously according to the judgment result, and records the fault.

[0023] Preferably, the seat pneumatic massage control system is further improved so that if the LIN communication is abnormally disconnected and times out, the auxiliary valve enters sleep mode and cuts off the external power supply.

[0024] Preferably, the seat pneumatic massage control system is further improved so that the main valve and the auxiliary valve are synchronously put to sleep or awakened.

[0025] Preferably, the seat pneumatic massage control system is further improved, and the main valve is connected to the body of the vehicle by a controller.

[0026] The working principle and technical effects of the present invention are as follows:

[0027] Define the valve number corresponding to the auxiliary valve. In the present invention, the main valve is used as a controller and the auxiliary valve is used as an actuator. When the massage sequence is the auxiliary valve, the main valve sends an opening and closing valve instruction to the auxiliary valve through local LIN communication. After the auxiliary valve parses the opening and closing valve instruction, it drives the corresponding auxiliary valve to act, and feeds back the auxiliary valve current, auxiliary valve power supply voltage, auxiliary valve temperature and other states to the main valve in real time, so that the main valve can confirm the working state of the auxiliary valve.

[0028] If the above status is not within a reasonable range (the auxiliary valve state can be judged by setting a threshold value for logical judgment to determine whether it is within a reasonable range), the main and auxiliary valves will stop working simultaneously and a fault will be recorded.

[0029] When the local LIN is abnormally disconnected and times out, the auxiliary valve will enter sleep mode and cut off the external power supply to prevent the magnetic valve from being damaged due to long-term operation. When the main valve enters sleep mode / wake-up mode, the main valve notifies the auxiliary valve to enter sleep mode / wake-up mode synchronously through the local LIN command to ensure synchronization with the main valve status.

[0030] The present invention uses the main valve as a controller and the auxiliary valve as an actuator, solving the technical problem that a single valve cannot drive a sufficient number of massage air bags. In addition, when multiple valves work together, the main valve coordinates the massage point sequence of the air pump and each auxiliary valve, and can achieve the function of massaging more than 20 massage points. Since the main and auxiliary valves of the present invention use standard LIN protocol communication with a communication rate of 19.2kbps, real-time interaction between the main and auxiliary valves is ensured, and the response speed is within 10ms, so the passenger end will have a very smooth multi-point massage experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] The drawings of the present invention are intended to illustrate the general characteristics of the methods, structures and / or materials used in specific exemplary embodiments of the present invention, and to supplement the description in the specification. However, the drawings of the present invention are schematic diagrams not drawn to scale, and thus may not accurately reflect the precise structure or performance characteristics of any given embodiment, and the drawings of the present invention should not be interpreted as limiting or restricting the range of values ​​or properties covered by the exemplary embodiments of the present invention. The present invention is further described in detail below in conjunction with the drawings and specific embodiments:

[0032] Figure 1 It is a schematic diagram of the control logic of the main valve and the auxiliary valve of the present invention.

[0033] Figure 2 It is a schematic diagram of the connection structure of the main valve and the auxiliary valve of the present invention. DETAILED DESCRIPTION

[0034] The following is an explanation of the embodiments of the present invention by specific specific embodiments, and those skilled in the art can fully understand other advantages and technical effects of the present invention from the contents disclosed in this specification. The present invention can also be implemented or applied through different specific embodiments, and the details in this specification can also be applied based on different viewpoints, and various modifications or changes can be made without deviating from the general design concept of the invention. It should be noted that, in the absence of conflict, the following embodiments and the features in the embodiments can be combined with each other. The following exemplary embodiments of the present invention can be implemented in a variety of different forms and should not be interpreted as being limited to the specific embodiments described here. It should be understood that these embodiments are provided to make the disclosure of the present invention thorough and complete, and to fully convey the technical solutions of these exemplary specific embodiments to those skilled in the art. It should be understood that when an element is referred to as "connected" or "coupled" to another element, the element can be directly connected or coupled to another element, or there can be an intermediate element. The difference is that when an element is referred to as "directly connected" or "directly coupled" to another element, there is no intermediate element. In all the drawings, the same reference numerals always represent the same elements.

[0035] Example, reference Figure 1 , Figure 2 As shown, the present invention provides a seat pneumatic massage control system, comprising:

[0036] Independent air source, i.e. air pump, is connected to the main valve and the auxiliary valve through a common air path, and forms a one-to-one correspondence with the main valve, and is only controlled by the corresponding main valve;

[0037] The main valve is connected to the auxiliary valve for communication. The main valve controls itself and the auxiliary valve to perform inflation and deflation according to the massage point sequence. The inflation and deflation actions are performed by the respective solenoid valves described below. The main valve is connected to the vehicle body controller to obtain the massage point sequence, or the massage point sequence is pre-stored in the non-volatile memory of the main valve.

[0038] The auxiliary valve only analyzes and executes the main valve command, and feeds back its own working parameters to the main valve.

[0039] That is, a main valve and at least one auxiliary valve are connected to the same air pump. The main valve acts as a controller to control itself and the auxiliary valve (i.e., the auxiliary valve module, which has multiple solenoid valves) to perform charging and discharging according to the massage point sequence. The auxiliary valve only acts as an actuator to parse the auxiliary valve command to perform the action.

[0040] Preferably, the main valve and the auxiliary valve communicate via LIN, which has the advantages of less interactive information, less control delay, simple auxiliary valve body action logic, and the main valve body being able to fully confirm the auxiliary valve body working status.

[0041] Preferably, the main valve determines the working state of the auxiliary valve according to the working parameters fed back by the auxiliary valve, and decides whether to stop working synchronously according to the judgment result, and records the fault. The working parameters include: the opening and closing state of the solenoid valve, the current value of the solenoid valve, the power supply voltage value and the valve working temperature value. The working state of the auxiliary valve can be determined by calibrating the threshold, and then comparing the real-time working parameters with the calibrated threshold. If the threshold is exceeded, it means that the working state of the auxiliary valve is unreasonable and stops working synchronously, and records the fault.

[0042] Optionally, the above embodiment can be further improved. If the LIN communication is abnormally disconnected and times out, the auxiliary valve enters sleep mode and cuts off the external power supply to prevent the magnetic valve from being damaged due to long-term operation.

[0043] Optionally, the above embodiment can be further improved, and the main valve and the auxiliary valve can be put into sleep or awakened synchronously. Exemplarily, the interaction messages between the main valve and the auxiliary valve include:

[0044] Request:

[0045] Valve open / close (auxiliary valve solenoid valve card in / close);

[0046] Sleep / wake up (auxiliary valve enters sleep / wake up);

[0047] HSD Driver (HSD driver switch on / off).

[0048] Response:

[0049] Valve current (auxiliary valve solenoid valve current);

[0050] Power supply (auxiliary valve power supply voltage)

[0051] Valve temperature (auxiliary valve solenoid valve temperature);

[0052] Hold in count (the number of solenoid valves opened by the auxiliary valve at this time);

[0053] Error response (auxiliary valve fault mark).

[0054] Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as those commonly understood by those skilled in the art to which the present invention belongs. It will also be understood that, unless expressly defined herein, terms such as those defined in general dictionaries should be interpreted as having a meaning consistent with their meaning in the context of the relevant art, and not interpreted in an ideal or overly formal sense.

[0055] The present invention has been described in detail above through specific implementation modes and embodiments, but these do not constitute limitations of the present invention. Without departing from the principles of the present invention, those skilled in the art may also make many variations and improvements, which should also be regarded as the protection scope of the present invention.

Claims

1. A seat pneumatic massage control system, characterized in that: include: Independent gas source, which connects the main valve and the auxiliary valve through a common gas path, forms a one-to-one correspondence with the main valve, and is only controlled by the corresponding main valve; The main valve is in communication with the auxiliary valve, and controls itself and the auxiliary valve to perform inflation and deflation according to the massage point sequence; The auxiliary valve only analyzes and executes the main valve command, and feeds back its own working parameters to the main valve.

2. The seat pneumatic massage control system according to claim 1, characterized in that: The main valve and the auxiliary valve communicate via LIN.

3. The seat pneumatic massage control system according to claim 1, characterized in that: The working parameters include: the opening and closing state of the solenoid valve, the solenoid valve current value, the supply voltage value and the valve working temperature value.

4. The seat pneumatic massage control system according to claim 1, characterized in that: The main valve determines the working state of the auxiliary valve according to the working parameters fed back by the auxiliary valve, and decides whether to stop working synchronously according to the determination result, and records the fault.

5. The seat pneumatic massage control system according to claim 1, characterized in that: If the LIN communication is abnormally disconnected and times out, the auxiliary valve will enter sleep mode and cut off the external power supply.

6. The seat pneumatic massage control system according to claim 1, characterized in that: The main valve and the auxiliary valve can be put into sleep or awakened synchronously.

7. The seat pneumatic massage control system according to claim 1, characterized in that: The main valve is connected to the body controller.

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