Novel double-electromagnetic-valve shock absorber control device and automobile

Abstract

The utility model discloses a novel double-solenoid-valve shock absorber control device which comprises a CDC controller, a vehicle is provided with four shock absorbers which are respectively arranged at four suspensions of the vehicle, each shock absorber is connected with two solenoid valves, and each solenoid valve is connected with the CDC controller. According to the invention, more efficient, more accurate and more stable control of the automobile suspension system can be realized, and better driving experience and riding comfort are provided for users.

Description

Technical Field

[0001] The present invention particularly relates to a novel dual-solenoid valve shock absorber control device and a vehicle. Background Art

[0002] Suspension is the general term for all force transmission devices between a vehicle's axles and body. Its performance directly impacts the driving experience and overall vehicle performance. Currently, semi-active suspension is widely used in new energy vehicles due to its superior comfort and body height adjustment.

[0003] An air suspension assembly, consisting of air springs and continuously adjustable dampers, is a widely used semi-active suspension. Compared to traditional passive suspension, this suspension offers the ability to adjust vehicle height and damping, balancing vehicle comfort and handling by varying the suspension's damping and stiffness. The air suspension system primarily consists of air springs, CDC dampers, an air supply unit (such as an air compressor, one-way valve, air circuit, and air tank), a guide mechanism, and a suspension controller. The suspension controller is a core component of the system, and a well-designed one can deliver higher levels of suspension performance, providing enhanced comfort and safety for drivers and passengers.

[0004] Air suspension assemblies are primarily solenoid-controlled. Conventional air suspension systems typically use a single solenoid valve to adjust the damping force. This often results in hysteresis in damping adjustment, limiting suspension performance and stability. Therefore, to better balance vehicle handling stability and ride comfort, it is crucial to design a dual-solenoid valve shock absorber that can precisely adjust damping force and achieve continuously adjustable damping across multiple operating conditions.

[0005] Currently, most shock absorbers of suspension systems adopt a single solenoid valve structure design, which has a simple structure and control.

[0006] In existing technology, single solenoid valve technology is widely used in automotive air suspension systems to control the damping adjustment of the suspension. However, single solenoid valve technology has several drawbacks that limit the performance and functionality of air suspension systems, necessitating innovative solutions to these technical issues.

[0007] Limited damping force adjustment range: Single-solenoid shock absorbers use only one solenoid valve to control the damping force of the shock absorber, and their adjustment range is relatively narrow. In some cases, single-solenoid shock absorbers may not provide sufficient damping force, resulting in the suspension system being unable to effectively absorb shock and stabilize.

[0008] Low damping force adjustment precision: Because only one solenoid valve controls the damping force, single-solenoid shock absorbers have relatively low damping force adjustment precision. This inability to precisely control the damping force can result in a less-than-sensitive or less-precise suspension system response.

[0009] Slow damping force adjustment: Single-solenoid shock absorbers have a slow damping force adjustment speed. Since there is only one solenoid valve, it takes longer to adjust the damping force and cannot quickly adapt to changes in various road conditions and driving conditions.

[0010] Single-solenoid shock absorbers typically only offer basic damping force adjustment and lack other advanced features, such as active suspension and active vehicle height reduction, which are common in advanced suspension systems.

[0011] The above issues gave rise to the innovative need for the dual-solenoid valve air suspension controller of the present invention. This invention aims to address the shortcomings of existing single-solenoid valve technology through the innovative design and application of dual-solenoid valve technology, providing more control modes, reducing energy consumption, and improving response speed. Through these innovations, the present invention achieves more efficient, precise, and stable control of automotive air suspension systems, providing users with a better driving experience and ride comfort. Summary of the Invention

[0012] The purpose of the present invention is to provide a novel dual-solenoid valve shock absorber control device and automobile, which can achieve more efficient, more precise and more stable control of the automobile suspension system, and provide users with a better driving experience and ride comfort.

[0013] The technical solution adopted in the present invention is:

[0014] A novel dual-solenoid valve shock absorber control device includes a CDC controller. A vehicle is provided with four shock absorbers, which are respectively arranged at the four suspensions of the vehicle. Each shock absorber is configured and connected to two solenoid valves, and each solenoid valve is connected to the CDC controller.

[0015] Furthermore, the novel dual-solenoid valve shock absorber control device also includes a three-axis vehicle body acceleration sensor, a vertical wheel acceleration sensor, and a vehicle body height sensor connected to the CDC controller.

[0016] There are four vertical wheel acceleration sensors, which are installed on or near the four suspensions at the front, rear, left, and right sides respectively.

[0017] There are four vehicle height sensors, which are installed on or near the four suspensions at the front, rear, left, and right sides respectively.

[0018] The body acceleration sensor is installed at the center of mass.

[0019] Furthermore, each shock absorber is equipped with two solenoid valves, namely a compression solenoid valve and an extension solenoid valve;

[0020] Each solenoid valve is connected to an air dryer and an air compressor in sequence, and the CDC controller is connected to the motor of the air compressor through a relay.

[0021] Furthermore, the CDC controller includes a Buck buck module, a WD watchdog module, an LDO low-dropout voltage regulator, a communication module, a central control unit MCU, and an H-bridge driver module. The output end of the Buck buck module is connected to the input end of the LDO low-dropout voltage regulator and the input end of the communication module. The external power supply is stepped down by the Buck buck module and then supplied to the LDO low-dropout voltage regulator and the communication module.

[0022] The output end of the WD watchdog module, the output end of the LDO low-voltage dropout regulator, and the output end of the communication module are connected to the central control unit MCU, each sensor is connected to the communication module, and the output end of the central control unit MCU is connected to each solenoid valve through multiple H-bridge driver modules.

[0023] The communication module includes a CAN communication module and a PSI5 communication module. The central control unit MCU is connected to the acceleration sensor on the vehicle through the PSI5 communication module, and the central control unit MCU is connected to the vehicle controller and the height sensor on the vehicle through the CAN communication module.

[0024] Furthermore, the CAN communication module includes a resistor R32, an inductor L8, a capacitor C49, a resistor R36, a resistor R33, a common-mode filter, a transient voltage suppressor D6 and a communication chip U5. One end of the resistor R32 is connected to port 1 of the communication chip U5, and the other end of the resistor R32 serves as the CAN_TXD signal input terminal. Port 2 of the communication chip U5 is grounded, one end of the inductor L8 and one end of the capacitor C49 are connected to port 3 of the communication chip U5, the other end of the inductor L8 is connected to a 5V voltage, the other end of the capacitor C49 is grounded, port 4 of the communication chip U5 is connected to one end of the resistor R36, and the other end of the resistor R36 serves as the CAN_RXD signal input terminal. Ports 6 and 7 of the communication chip U5 are respectively connected to the common-mode filter. Port 1 and port 2 of the common-mode filter are connected, port 8 of the communication chip U5 is connected to resistor R33 and serves as the CAN_STB signal input terminal, the other end of the resistor R33 is grounded, port 3 of the common-mode filter is connected to one end of the resistor R35, one end of the capacitor C50 and port 1 of the transient voltage suppressor D6, and serves as the CANL signal terminal output, port 4 of the common-mode filter is connected to one end of the resistor R34, one end of the capacitor C47 and port 2 of the transient voltage suppressor D6, and serves as the CANH signal terminal output, the other end of the resistor R34 is connected to the other end of the resistor R35 and one end of the capacitor C48, the other end of the capacitor C48 is grounded, and the other end of the capacitor C47, the other end of the capacitor C50 and the transient voltage suppressor D6 are all grounded.

[0025] Furthermore, the H-bridge driver module includes an H-bridge driver chip U8, a resistor R59, a resistor R60, a resistor R61, a resistor R62, a resistor R63, a resistor R64, a resistor R65, a resistor R66, a resistor R67, a resistor R68, a resistor R69, a capacitor C66, a capacitor C67, a capacitor 68, a capacitor 69, a capacitor 70, a capacitor 71, a capacitor 72, a capacitor 73, and a capacitor C74;

[0026] One end of resistor R59, one end of resistor R60, one end of resistor R61, one end of resistor R62, one end of resistor R63, one end of resistor R64, one end of resistor R65, one end of resistor R66, one end of resistor R67, one end of resistor R68, and one end of resistor R69 are respectively connected to port 1, port 3, port 5, port 4, port 6, port 2, port 8, port 7, port 17, port 16, and port 15 of the H-bridge driver chip U8. Port 1 of the H-bridge driver chip U8 serves as the NFAULT signal input terminal, and port 18 of the H-bridge driver chip U8 serves as the NFAULT signal input terminal. The other end of the resistor R60 is grounded, the other end of the resistor R61 is used as the input end of the ENB signal, the other end of the resistor R62 is used as the input end of the PWMA signal, the other end of the resistor R63 is used as the input end of the PWMB signal, the other end of the resistor R64 is used as the input end of the NSLEEP signal, port 15 and port 16 of the H-bridge driver chip U8 are used as the SOA signal input end and the SOB signal input end respectively, the other end of the resistor R67 is grounded, the other end of the resistor R68 and the other end of the resistor R69 are connected to one end of the capacitor C74, and the other end of the capacitor C74 is grounded;

[0027] Ports 22, 24, and 26 of the H-bridge driver chip U8 are connected to one end of capacitor C66, one end of capacitor C67, one end of capacitor C68, and one end of capacitor C69. Port 19 of the H-bridge driver chip U8 is connected to the other end of capacitor C66. Ports 9, 11, and 13 of the H-bridge driver chip U8 are respectively connected to the other end of capacitor C67, the other end of capacitor C68, and the other end of capacitor C69, and are grounded. Ports 20 and 21 of the H-bridge driver chip U8 are respectively connected to capacitor C70. The two ends of the H-bridge driver chip U8 are connected, port 14 of the H-bridge driver chip U8 is connected to one end of the capacitor C71, and the other end of the capacitor C71 is grounded, port 10 and port 25 of the H-bridge driver chip U8 are connected to one end of the capacitor C73 and serve as the SA signal output end, port 12 and port 23 of the H-bridge driver chip U8 are connected to one end of the capacitor C72 and serve as the SB signal output end, the other end of the capacitor C72 and the other end of the capacitor C73 are grounded, and the other end of the resistor R65, the other end of the resistor R66 and the other end of the resistor R67 are grounded.

[0028] Furthermore, an acceleration sensor circuit is provided between the acceleration sensor and the central control unit MCU; the acceleration sensor circuit includes resistors R83, R84, R85, R86, R87, R88, R89, R90, field effect transistors Q9, Q10, Q11, Q12, capacitors C93, C94, C95 and an accelerometer chip U11, and port 1 of the accelerometer chip U11 is connected to resistor R83. 9, the source of the field effect tube Q10, the other end of the resistor R89 ​​is connected to one end of the resistor R90, the drain of the field effect tube Q10 is connected to the resistor R87 and serves as the SCL input terminal, the other end of the resistor R87 is connected to one end of the resistor R88, the gate of the field effect tube Q10 and the gate of the field effect tube Q12, the No. 4 port of the accelerometer chip U11 is connected to the other end of the resistor R90 and the source of the field effect tube Q12, the drain of the field effect tube Q12 is connected to the other end of the resistor R88 The 6th, 7th and 8th ports of the accelerometer chip U11 are connected and serve as the SDA input terminal. The 12th port of the accelerometer chip U11 is connected to one end of the resistor R84 and the source of the field effect transistor Q9. The 11th port of the accelerometer chip U11 is connected to one end of the resistor R83 and the source of the field effect transistor Q11. The other end of the resistor R83 is connected to the other end of the resistor R84. The gate of the field effect transistor Q9 is connected to the gate of the field effect transistor Q11, one end of the resistor R85 and the source of the resistor R86. 6, the other end of the resistor R86 is connected to the drain of the field effect transistor Q9 and serves as the output end of INT1, the other end of the resistor R85 is connected to the drain of the field effect transistor Q11 and serves as the output end of INT2, port 10 and port 9 of the accelerometer chip U11 are connected to one end of the capacitor C93, one end of the capacitor C94 and one end of the capacitor C95, and are connected to a 1.8V voltage, the other end of the capacitor C93 is connected to the other end of the capacitor C94 and the other end of the capacitor C95, and are grounded.

[0029] Furthermore, a height sensor signal filtering circuit is provided between the height sensor and the central control unit MCU; the height sensor signal filtering circuit includes a resistor R1, a resistor R2, a capacitor C1, a capacitor C2, a capacitor C3, a capacitor C4, an inductor L1, an inductor L2, a diode D1, a diode D2 and an ESD diode T1, port 1 of the ESD diode T1 is connected to one end of the inductor L2 and one end of the capacitor C1, and serves as the input end of PWM_IN2, port 2 of the ESD diode T1 is connected to one end of the inductor L1 and one end of the capacitor C2, and serves as the input end of PWM_IN2. The input end of PWM_IN1, the other end of the inductor L1 is connected to the cathode of the diode D1, the anode of the diode D1 is connected to one end of the resistor R1 and one end of the capacitor C3, and serves as the output end of PWM_IN1_MCU1, the other end of the resistor R1 is connected to one end of the resistor R2 and connected to the VDD voltage, the other end of the resistor R2 is connected to one end of the capacitor C4, the other end of the capacitor C3 and the other end of the capacitor C4 are grounded, the other end of the inductor L2 is connected to the cathode of the diode D2, and the anode of the diode D2 serves as the output end of PWM_IN1_MCU2.

[0030] The PSI5 communication module includes a communication chip U7, a resistor R57, a resistor R58, a capacitor C52, a capacitor C53, a capacitor C54, a capacitor C55, a capacitor C56, a capacitor C57, a capacitor C58, a capacitor C59, a capacitor C60, a capacitor C61, a capacitor C62, a capacitor C63, a capacitor C64, an inductor L11, and an inductor L12. Port 1, port 5, port 2, port 6, port 3, port 23, port 24, port 25, port 32, and port 27 of the communication chip U7 are respectively connected to one end of resistor R43, one end of resistor R44, one end of resistor R45, one end of resistor R46, one end of resistor R47, one end of resistor R50, and one end of resistor R51. , one end of the resistor R52, one end of the resistor R54, one end of the resistor R55, port 26 of the communication chip U7 is connected to one end of the resistor R48 and one end of the resistor R49, the other end of the resistor R43 and the other end of the resistor R44 are respectively used as the SYNC1 connection end and the SYNC2 connection end, the other end of the resistor R45 and the other end of the resistor R46 are respectively used as the DOUT1 connection end and the DOUT2 connection end, the other end of the resistor R47 and the other end of the resistor R49 are grounded, the other end of the resistor R48, the other end of the resistor R50, the other end of the resistor R51, the other end of the resistor R52, and the other end of the resistor R54 are respectively used as the RST connection end, the MOSI connection end, the SCLK connection end, and the CS connection end , MISO connection end, port 30 and port 33 of the communication chip U7 are grounded, the other end of the resistor R55 is grounded, port 29 of the communication chip U7 is connected to one end of the capacitor C55, port 19 and port 20 of the communication chip U7 are connected to one end of the capacitor C52, one end of the capacitor C53, one end of the capacitor C54, one end of the inductor L11, one end of the capacitor C57 and the drain of the field effect transistor Q5, the other end of the inductor L11 is connected to a 12V voltage, port 31 of the communication chip U7 is connected to one end of the inductor L12 and one end of the capacitor C56, port 21 of the communication chip U7 is connected to the gate of the field effect transistor Q5, port 12 of the communication chip U7 is connected to one end of the capacitor C58, one end of the capacitor C59 and the drain of the field effect transistor Q5. The source of the effect tube Q5 is connected, the other end of the capacitor C52, the other end of the capacitor C53, the other end of the capacitor C54, the other end of the capacitor C55, the other end of the capacitor C56, the other end of the capacitor C57, the other end of the capacitor C58, and the other end of the capacitor C59 are all grounded, ports 8 and 9 of the communication chip U7 are respectively connected to the two ends of the capacitor C60, ports 16 and 17 of the communication chip U7 are respectively connected to the two ends of the capacitor C61, port 11 of the communication chip U7 is connected to one end of the capacitor C62 and one end of the resistor R53, port 10 of the communication chip U7 is connected to the other end of the capacitor C62, one end of the capacitor C63 and one end of the Schottky diode D6, and is connected to one end of the resistor R57.The other end of resistor R53 is connected to the other end of capacitor C63 and the other end of Schottky diode D6, and serves as the output end of PSI1. Port 14 of communication chip U7 is connected to one end of resistor R56 and one end of capacitor C64. Port 15 of communication chip U7 is connected to the other end of capacitor C64, one end of capacitor C65, and one end of Schottky diode D7, and is also connected to one end of resistor R58. The other end of resistor R56 is connected to the other end of capacitor C65 and the other end of Schottky diode D7, and serves as the output end of PSI2. The other end of resistor R57 is connected to the other end of resistor R58 and is grounded.

[0031] An automobile comprises the novel dual-solenoid valve shock absorber control device described above.

[0032] The beneficial effects of the present invention are:

[0033] 1. The present invention configures two solenoid valves on one shock absorber. The dual solenoid valves can independently adjust two different valve ports, enabling adjustment of the shock absorber over a wider damping range. This allows for more refined adjustment, reduces response delay, and significantly improves the adjustment accuracy of the shock absorption system, thereby bringing better vehicle stability and comfort. In particular, under extreme operating conditions such as rapid cornering, intense acceleration or braking, the improved response speed enables more efficient, precise, and stable control of the vehicle suspension system, providing users with a better driving experience and ride comfort.

[0034] 2. The CDC controller detects the vehicle body height and acceleration in all directions through a height sensor and an acceleration sensor, and adjusts the vehicle's four suspension shock absorbers and body height through each solenoid valve according to the vehicle's current driving status. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 It is a schematic diagram of a novel dual-solenoid valve shock absorber control device in an embodiment of the present invention.

[0036] Figure 2 4 is a schematic diagram of a CDC controller in an embodiment of the present invention.

[0037] Figure 3 4 is a schematic diagram of a CAN communication module in an embodiment of the present invention.

[0038] Figure 4 Schematic diagram of the H-bridge driver module in an embodiment of the present invention.

[0039] Figure 5 1 is a schematic diagram of a PSI5 communication module in an embodiment of the present invention.

[0040] Figure 6 4 is a circuit diagram of an acceleration sensor in an embodiment of the present invention.

[0041] Figure 7 4 is a schematic diagram of a height sensor signal filtering circuit in an embodiment of the present invention.

[0042] In the figure: 1-Buck step-down module; 2-WD watchdog module; 3-LDO low-dropout voltage regulator; 4-CAN communication module; 5-PSI5 communication module; 6-central control unit MCU; 7-H-bridge driver module. DETAILED DESCRIPTION

[0043] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0044] In the description of the present invention, it should be understood that if the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like are used to indicate the orientation or position relationship based on the orientation or position relationship shown in the accompanying drawings, they are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the said features. In the description of the present invention, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.

[0045] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood broadly. For example, they may refer to fixed connections, removable connections, or integral connections. They may refer to mechanical connections or electrical connections. They may refer to direct connections or indirect connections through an intermediary, and they may refer to internal communication between two components or interactions between two components. Those skilled in the art will understand the specific meanings of these terms in the present invention based on the specific circumstances.

[0046] Example 1

[0047] A new type of dual solenoid valve shock absorber control device, such as Figures 1 and 2As shown, the CDC controller, the vehicle is equipped with 4 shock absorbers, which are respectively arranged at the four suspensions of the vehicle. Each shock absorber is configured and connected to two solenoid valves, and each solenoid valve is connected to the CDC controller;

[0048] The novel dual-solenoid valve shock absorber control device also includes a three-axis vehicle acceleration sensor, a vertical wheel acceleration sensor, and a vehicle height sensor connected to a CDC controller. The CDC controller controls the compression or extension of each shock absorber via solenoid valves based on the detections of the three-axis vehicle acceleration sensor, the vertical wheel acceleration sensor, and the vehicle height sensor. When the acceleration sensor and the vehicle height sensor determine that the vehicle is traveling on an uneven road, the solenoid valves adjust the suspension shock absorbers to raise the vehicle body for easier passage. When traveling at high speed on a smooth road, the solenoid valves adjust the suspension shock absorbers to lower the vehicle body, lowering the center of gravity and improving handling stability. Damping force control is used to improve vehicle handling stability by suppressing changes in vehicle posture during sharp turns, sudden acceleration, and emergency braking. Spring stiffness control varies the spring stiffness to adjust the suspension to meet either sporty or comfortable requirements.

[0049] Compared to traditional single-solenoid valve configurations, the dual-solenoid valve configuration with CDC shock absorbers can further shorten the control cycle to 5 milliseconds or less, enabling more refined adjustment across a wider damping range. The dual-solenoid valves can independently adjust two different valve ports, allowing the controller to combine different damping adjustment methods based on real-time road conditions and vehicle dynamic requirements to cope with various complex road conditions. This design reduces response delay and significantly improves the adjustment accuracy of the damping system, thereby providing better vehicle stability and comfort, especially in extreme driving conditions such as fast cornering, heavy acceleration, and braking.

[0050] Each suspension shock absorber is equipped with two solenoid valves, which are used in variable damping shock absorbers and are located between the inner and outer chambers of the shock absorber to change the resistance to fluid flow in the variable damping shock absorber, thereby increasing or decreasing its damping characteristics. The working principle of the dual-solenoid valve shock absorber is that the compression stroke and the recovery stroke are controlled by independent solenoid valves respectively. When the solenoid valve closes certain channels, the oil can only pass through narrower channels, thereby providing a greater damping force. When the damping force needs to be reduced, the solenoid valve will open other channels, increase the oil flow, and reduce the damping force. By controlling the opening and closing of the two solenoid valves, the opening and closing of more different channels of the shock absorber can be controlled separately to achieve continuous adjustment of the damping.

[0051] The suspension's elastic elements are air springs, which are also connected to solenoid valves. These exhaust solenoid valves are also connected to the CDC controller. When the vehicle's height needs to be adjusted over a larger range, the exhaust solenoid valve can be opened to release the air from the air spring, thereby lowering the vehicle's chassis. By controlling the opening and closing of the solenoid valve, the stiffness of the air suspension and the vehicle's height can be adjusted. When the air pump inflates the air spring, increasing the internal air pressure, the spring's stiffness increases. Reducing the internal air pressure reduces the stiffness and makes the suspension softer. Air springs adjust the vehicle's height by changing the volume of the air inside. A larger volume of air increases the vehicle's height; a smaller volume reduces the vehicle's height.

[0052] Furthermore, there are four vertical wheel acceleration sensors, which are respectively installed on or near the four suspensions at the front, rear, left and right sides.

[0053] Furthermore, there are four vehicle body height sensors, which are respectively installed on or near the four suspensions at the front, rear, left and right sides.

[0054] The body acceleration sensor is installed at the center of mass.

[0055] Furthermore, each shock absorber is equipped with two solenoid valves, a compression solenoid valve and an extension solenoid valve, which are used for compression and extension of the shock absorber respectively;

[0056] Each solenoid valve is connected in turn to an air dryer and an air compressor, and the CDC controller is connected to the air compressor's motor via a relay. The variable damping shock absorber employs a solenoid valve between the inner and outer chambers to alter the resistance to fluid flow during shock absorber operation, thereby increasing or decreasing the vibration energy consumed by the shock absorber and changing its damping characteristics. The system determines the vehicle's driving state based on data from sensors such as the vehicle's body acceleration sensors, wheel acceleration sensors, and lateral acceleration sensors. The CDC controller then issues commands to the shock absorber's control valves, adjusting the valve opening to provide appropriate damping. The system can also operate in a preset mode, selected by the driver from within the vehicle.

[0057] Furthermore, the CDC controller includes a Buck buck module, a WD watchdog module, an LDO low-dropout voltage regulator, a communication module, a central control unit MCU, and an H-bridge driver module. The output end of the Buck buck module is connected to the input end of the LDO low-dropout voltage regulator and the input end of the communication module. The external power supply is stepped down by the Buck buck module and then supplied to the LDO low-dropout voltage regulator and the PSI5 communication module.

[0058] The output end of the WD watchdog module, the output end of the LDO low-dropout voltage regulator, and the output end of the communication module are connected to the central control unit MCU, and each sensor is connected to the communication module. The output end of the central control unit MCU is connected to each solenoid valve through multiple H-bridge driver modules. The utility model controls each solenoid valve through each module of the CDC controller, thereby better controlling the shock absorber.

[0059] Furthermore, the communication module includes a CAN communication module and a PSI5 communication module. The central control unit MCU is connected to the acceleration sensor through the PSI5 communication module, and the central control unit MCU is connected to the height sensor through the CAN communication module.

[0060] This controller is specifically designed for dual-solenoid air suspension systems. Compared to traditional single-solenoid systems, it reserves more solenoid drive interfaces, enabling precise coordinated control of the air spring and shock absorber. Furthermore, it integrates two CAN bus interfaces for high-speed communication with the vehicle system. This allows for real-time acquisition of vehicle dynamics, precise adjustments to vehicle posture control strategies, and significant improvements in driving comfort and safety.

[0061] Example 2

[0062] like Figure 3-5 As shown, based on Example 1, the CAN communication module, the H-bridge driver module, and the PSI5 communication module are further limited. The performance of Example 2 after the limitations is even better.

[0063] Furthermore, the CAN communication module includes a resistor R32, an inductor L8, a capacitor C49, a resistor R36, a resistor R33, a common-mode filter, a transient voltage suppressor D6 and a communication chip U5. One end of the resistor R32 is connected to port 1 of the communication chip U5, and the other end of the resistor R32 serves as the CAN_TXD signal input terminal. Port 2 of the communication chip U5 is grounded, one end of the inductor L8 and one end of the capacitor C49 are connected to port 3 of the communication chip U5, the other end of the inductor L8 is connected to a 5V voltage, the other end of the capacitor C49 is grounded, port 4 of the communication chip U5 is connected to one end of the resistor R36, and the other end of the resistor R36 serves as the CAN_RXD signal input terminal. Ports 6 and 7 of the communication chip U5 are respectively connected to the common-mode filter. Port 1 and port 2 of the common-mode filter are connected, port 8 of the communication chip U5 is connected to resistor R33 and serves as the CAN_STB signal input terminal, the other end of the resistor R33 is grounded, port 3 of the common-mode filter is connected to one end of the resistor R35, one end of the capacitor C50 and port 1 of the transient voltage suppressor D6, and serves as the CANL signal terminal output, port 4 of the common-mode filter is connected to one end of the resistor R34, one end of the capacitor C47 and port 2 of the transient voltage suppressor D6, and serves as the CANH signal terminal output, the other end of the resistor R34 is connected to the other end of the resistor R35 and one end of the capacitor C48, the other end of the capacitor C48 is grounded, and the other end of the capacitor C47, the other end of the capacitor C50 and the transient voltage suppressor D6 are all grounded.

[0064] Furthermore, the model of the transient voltage suppressor D6 is PESD1CAN-U.

[0065] The common-mode filter model is ACT45B-510-2P-TL003.

[0066] The model of the communication chip U5 is TJA1042-Q1.

[0067] Furthermore, the H-bridge driver module includes an H-bridge driver chip U8, a resistor R59, a resistor R60, a resistor R61, a resistor R62, a resistor R63, a resistor R64, a resistor R65, a resistor R66, a resistor R67, a resistor R68, a resistor R69, a capacitor C66, a capacitor C67, a capacitor 68, a capacitor 69, a capacitor 70, a capacitor 71, a capacitor 72, a capacitor 73, and a capacitor C74;

[0068] One end of resistor R59, one end of resistor R60, one end of resistor R61, one end of resistor R62, one end of resistor R63, one end of resistor R64, one end of resistor R65, one end of resistor R66, one end of resistor R67, one end of resistor R68, and one end of resistor R69 are respectively connected to port 1, port 3, port 5, port 4, port 6, port 2, port 8, port 7, port 17, port 16, and port 15 of the H-bridge driver chip U8. The other end of resistor R59 is connected to a 5V voltage. Port 1 of the H-bridge driver chip U8 serves as the NFAULT signal input terminal, and port 18 of the H-bridge driver chip U8 is connected to the 5V voltage. The other end of resistor R60 is grounded, the other end of resistor R61 is used as the input end of ENB signal, the other end of resistor R62 is used as the input end of PWMA signal, the other end of resistor R63 is used as the input end of PWMB signal, the other end of resistor R64 is used as the input end of NSLEEP signal, port 15 and port 16 of H-bridge driver chip U8 are used as the input end of SOA signal and SOB signal respectively, the other end of resistor R67 is grounded, the other end of resistor R68 and the other end of resistor R69 are connected to one end of capacitor C74 and to 2.5V_REF voltage, and the other end of capacitor C74 is grounded;

[0069] The No. 22, No. 24 and No. 26 ports of the H-bridge driver chip U8 are connected to one end of the capacitor C66, one end of the capacitor C67, one end of the capacitor C68 and one end of the capacitor C69, and are connected to a 12V voltage. The No. 19 port of the H-bridge driver chip U8 is connected to the other end of the capacitor C66. The No. 9, No. 11 and No. 13 ports of the H-bridge driver chip U8 are respectively connected to the other end of the capacitor C67, the other end of the capacitor C68 and the other end of the capacitor C69, and are grounded. The No. 20 and No. 21 ports of the H-bridge driver chip U8 are respectively connected to the voltage Both ends of capacitor C70 are connected, port 14 of the H-bridge driver chip U8 is connected to one end of capacitor C71, and the other end of capacitor C71 is grounded, port 10 and port 25 of the H-bridge driver chip U8 are connected to one end of capacitor C73 and serve as SA signal output ends, port 12 and port 23 of the H-bridge driver chip U8 are connected to one end of capacitor C72 and serve as SB signal output ends, the other end of capacitor C72 and the other end of capacitor C73 are grounded, and the other end of resistor R65, the other end of resistor R66 and the other end of resistor R67 are grounded.

[0070] Furthermore, the model of the H-bridge driver chip U8 is MPQ6615GQKTE-AEC1, which is used to drive the solenoid valve and supports current detection. The SA / SB pin is the output pin of MPQ6615, which is connected to the A-phase and B-phase solenoid valves to directly drive the A-phase and B-phase of the solenoid valve.

[0071] The SOA / SOB pins are used for current sensing, feeding the solenoid valve's A and B phase currents back to the MCU. The MCU reads the voltage value through the ADC and calculates the external current. Components such as R68, R69, T46, and T47 form the current sensing circuit. The SA / SB pins are output pins of the MPQ6615, directly driving the solenoid valve's A and B phases.

[0072] Control pins of H-bridge driver module:

[0073] ENA / ENB (enable pin): Connected to the input through resistors R60 and R61 to control the enable of the two channels respectively.

[0074] PWMA / PWMB (PWM signal input): connected through resistors R62 and R63 to control the speed of the motor.

[0075] nSLEEP: Accessed through R64, controls the sleep mode of the chip. When nSLEEP is low, the chip enters low power mode.

[0076] Fault detection pin:

[0077] nFAULT: Connected to the R59 resistor and the T38 test point for detecting fault conditions. When the chip detects a fault, this pin outputs a low-level signal.

[0078] Current sense pin:

[0079] INM0 / INM1: These two pins are connected to external resistors R65 and R66 for current sensing. These pins can be used to monitor the motor current and protect the motor and drive circuit.

[0080] SOA / SOB: Outputs the current detection signal to the outside through resistors R68 and R69 for feedback control.

[0081] Output Pins:

[0082] SA / SB: Output signals are connected to both ends of the motor to drive the motor. The SA and SB outputs are also grounded through capacitors C72 and C73 to remove high-frequency noise.

[0083] Capacitors and filters, capacitors C70 and C71: 0.1µF and 4.7µF respectively, connected to the CP1 and CP2 pins, are used to stabilize the voltage of the internal charge pump and ensure the stability of the driving voltage.

[0084] Current feedback capacitor C74: connected between SOA and SOB, used to smooth the current detection signal and filter out high-frequency noise.

[0085] H-bridge driver module working principle: ENA and ENB control the channel enable of the motor. PWMA and PWMB control the direction and speed of the motor.

[0086] Fault detection: When problems such as chip abnormal operation or overheating are detected, the nFAULT pin outputs a low level to indicate a fault state.

[0087] Current sensing and feedback: INM0, INM1, SOA, and SOB work together to detect current and protect the motor from overcurrent damage. These signals can also be used as feedback for the current control loop.

[0088] An acceleration sensor circuit is provided between the acceleration sensor and the central control unit MCU; the acceleration sensor circuit includes resistors R83, R84, R85, R86, R87, R88, R89, R90, field effect transistors Q9, Q10, Q11, Q12, capacitors C93, C94, C95 and accelerometer chip U11. Port 1 of the accelerometer chip U11 is connected to one end of the resistor R89, the field effect transistor Q10, the capacitor C93, the capacitor C94, the capacitor C95 and the accelerometer chip U11. The source of the MOSFET Q12 is connected to the other end of the resistor R89, and the other end of the resistor R89 ​​is connected to one end of the resistor R90 and connected to a 1.8V voltage. The drain of the MOSFET Q10 is connected to the resistor R87 and serves as the SCL input terminal. The other end of the resistor R87 is connected to one end of the resistor R88, the gate of the MOSFET Q10, and the gate of the MOSFET Q12, and connected to a 5V voltage. Port 4 of the accelerometer chip U11 is connected to the other end of the resistor R90 and the source of the MOSFET Q12. The drain of the MOSFET Q12 is connected to the other end of the resistor R88, and As the SDA input terminal, the 6th, 7th and 8th ports of the accelerometer chip U11 are grounded, the 12th port of the accelerometer chip U11 is connected to one end of the resistor R84 and the source of the field effect transistor Q9, the 11th port of the accelerometer chip U11 is connected to one end of the resistor R83 and the source of the field effect transistor Q11, the other end of the resistor R83 is connected to the other end of the resistor R84 and connected to a 1.8V voltage, the gate of the field effect transistor Q9 is connected to the gate of the field effect transistor Q11, one end of the resistor R85 and the resistor R86 and connected to one end of the 10th 1100 pin and connected to a 5V voltage. The other end of the resistor R86 is connected to the drain of the field effect transistor Q9 and serves as the output end of INT1. The other end of the resistor R85 is connected to the drain of the field effect transistor Q11 and serves as the output end of INT2. Port 10 and port 9 of the accelerometer chip U11 are connected to one end of the capacitor C93, one end of the capacitor C94 and one end of the capacitor C95 and connected to a 1.8V voltage. The other end of the capacitor C93 is connected to the other end of the capacitor C94 and the other end of the capacitor C95 and grounded.

[0089] Furthermore, a height sensor signal filtering circuit is provided between the height sensor and the central control unit MCU; the height sensor signal filtering circuit includes a resistor R1, a resistor R2, a capacitor C1, a capacitor C2, a capacitor C3, a capacitor C4, an inductor L1, an inductor L2, a diode D1, a diode D2 and an ESD diode T1, port 1 of the ESD diode T1 is connected to one end of the inductor L2 and one end of the capacitor C1, and serves as the input end of PWM_IN2, port 2 of the ESD diode T1 is connected to one end of the inductor L1 and one end of the capacitor C2, and serves as the input end of PWM_IN2. The input end of PWM_IN1, the other end of the inductor L1 is connected to the cathode of the diode D1, the anode of the diode D1 is connected to one end of the resistor R1 and one end of the capacitor C3, and serves as the output end of PWM_IN1_MCU1, the other end of the resistor R1 is connected to one end of the resistor R2 and connected to the VDD voltage, the other end of the resistor R2 is connected to one end of the capacitor C4, the other end of the capacitor C3 and the other end of the capacitor C4 are grounded, the other end of the inductor L2 is connected to the cathode of the diode D2, and the anode of the diode D2 serves as the output end of PWM_IN1_MCU2.

[0090] Furthermore, the model of the ESD diode T1 is PESD24VL2BT.

[0091] The models of inductor L1 and inductor L2 are BH03Y314S1K.

[0092] Furthermore, the PSI5 communication module includes a communication chip U7, a resistor R57, a resistor R58, a capacitor C52, a capacitor C53, a capacitor C54, a capacitor C55, a capacitor C56, a capacitor C57, a capacitor C58, a capacitor C59, a capacitor C60, a capacitor C61, a capacitor C62, a capacitor C63, a capacitor C64, an inductor L11, and an inductor L12. Port 1, port 5, port 2, port 6, port 3, port 23, port 24, port 25, port 32, and port 27 of the communication chip U7 are respectively connected to one end of the resistor R43, one end of the resistor R44, one end of the resistor R45, one end of the resistor R46, one end of the resistor R47, one end of the resistor R50, and one end of the resistor R51. One end of the resistor R52, one end of the resistor R54, and one end of the resistor R55, port 26 of the communication chip U7 is connected to one end of the resistor R48 and one end of the resistor R49, the other end of the resistor R43 and the other end of the resistor R44 are respectively used as the SYNC1 connection end and the SYNC2 connection end, the other end of the resistor R45 and the other end of the resistor R46 are respectively used as the DOUT1 connection end and the DOUT2 connection end, the other end of the resistor R47 and the other end of the resistor R49 are grounded, the other end of the resistor R48, the other end of the resistor R50, the other end of the resistor R51, the other end of the resistor R52, and the other end of the resistor R54 are respectively used as the RST connection end, the MOSI connection end, the SCLK connection end, and the CS connection end. The communication chip U7 is connected to the MISO connection terminal, the No. 30 port and the No. 33 port of the communication chip U7 are grounded, the other end of the resistor R55 is grounded, the No. 29 port of the communication chip U7 is connected to one end of the capacitor C55, the No. 19 port and the No. 20 port of the communication chip U7 are connected to one end of the capacitor C52, one end of the capacitor C53, one end of the capacitor C54, one end of the inductor L11, one end of the capacitor C57 and the drain of the field effect transistor Q5, the other end of the inductor L11 is connected to the 12V voltage, the No. 31 port of the communication chip U7 is connected to one end of the inductor L12 and one end of the capacitor C56, the No. 21 port of the communication chip U7 is connected to the gate of the field effect transistor Q5, the No. 12 port of the communication chip U7 is connected to one end of the capacitor C58, one end of the capacitor C59 and The source of the field effect transistor Q5 is connected, the other end of the capacitor C52, the other end of the capacitor C53, the other end of the capacitor C54, the other end of the capacitor C55, the other end of the capacitor C56, the other end of the capacitor C57, the other end of the capacitor C58, and the other end of the capacitor C59 are all grounded, ports 8 and 9 of the communication chip U7 are respectively connected to the two ends of the capacitor C60, ports 16 and 17 of the communication chip U7 are respectively connected to the two ends of the capacitor C61, port 11 of the communication chip U7 is connected to one end of the capacitor C62 and one end of the resistor R53, port 10 of the communication chip U7 is connected to the other end of the capacitor C62, one end of the capacitor C63 and one end of the Schottky diode D6, and is connected to one end of the resistor R57.The other end of resistor R53 is connected to the other end of capacitor C63 and the other end of Schottky diode D6, and serves as the output end of PSI1. Port 14 of communication chip U7 is connected to one end of resistor R56 and one end of capacitor C64. Port 15 of communication chip U7 is connected to the other end of capacitor C64, one end of capacitor C65, and one end of Schottky diode D7, and is also connected to one end of resistor R58. The other end of resistor R56 is connected to the other end of capacitor C65 and the other end of Schottky diode D7, and serves as the output end of PSI2. The other end of resistor R57 is connected to the other end of resistor R58 and is grounded.

[0093] The model of the communication chip U7 is L9663.

[0094] The Schottky diode D6 and the Schottky diode D7 are of the type SBLC15CI.

[0095] An automobile comprises the novel dual-solenoid valve shock absorber control device described above.

[0096] The working principle of the present invention is as follows: The CDC controller mainly processes the input sensor signal and then controls the solenoid valve. The CDC controller can be roughly divided into a power control module, a switch signal input related module, a communication related module, and a solenoid valve drive related module.

[0097] 1. Power Management

[0098] Input voltage: The system receives 24V / 12V voltage from the outside and converts the 24V or 12V voltage into 12V output through two Buck step-down modules (MPQ2908AGF-AEC1 #1 and #2) to power subsequent modules, such as Figure 5 .2 as shown.

[0099] 5V Voltage Output: The 12V output from the Buck module is further converted to a stable 5V power supply through an LDO (low-dropout regulator). Two LDO modules (NSR3500-Q1 #1 and #2) are used, each outputting 5V and 500mA to power the system's logic circuits and MCU.

[0100] WD (watchdog) module: TPS3820-Q1 The watchdog circuit is connected to the MCU to detect whether the system is operating normally. If the system is abnormal, the MCU will be restarted through this module.

[0101] 2. MCU (Central Control Unit)

[0102] The YTM32B1ME0-LQFP100 main control chip is the central controller of the system. It communicates with external modules and sensors through various interfaces, and is responsible for controlling the H-bridge driver and collecting system status.

[0103] Communication Interfaces: CAN bus: The MCU interacts with external communication devices via two CAN FD interfaces (NCA1042BN-Q1), supporting internal vehicle control and data transmission. PSI5 interface: Communicates with external sensor modules via the L9663-TR PSI5 transceiver. I2C interface: Communicates with an external EEPROM memory (FM24C04ATG) via the I2C bus for non-volatile data storage.

[0104] 3. H-bridge driver module

[0105] The system uses multiple MPQ6615SGQKTE-AEC1 H-bridge driver modules to drive different solenoid valves. The H-bridge driver is powered by 12V and can output up to 8A of current.

[0106] Each solenoid valve is connected to a corresponding H-bridge driver with a control current of 2 A. These drivers are used to control the four solenoid valve groups (#1 - #8) for the front left, front right, rear left, and rear right, respectively.

[0107] Sleep mode: The H-bridge driver supports Sleep mode to reduce system power consumption. When the solenoid valve is not working, the MCU turns off the H-bridge driver through the Sleep control signal.

[0108] Fault detection: The H-bridge driver module has a fault detection function, and the fault signal is fed back to the MCU, making it convenient for the system to detect the working status of the driver and solenoid valve.

[0109] Body acceleration sensor circuit: The accelerometer circuit within the CDC controller achieves coordinated operation of 5V and 1.8V voltages through power management and bidirectional level conversion circuits. This ensures that the LIS2DW12TR accelerometer can reliably communicate with host devices at different logic levels through I2C. It also provides a robust interrupt signal interface design for monitoring and responding to acceleration events.

[0110] Height sensor signal filtering circuit: This circuit integrates transient voltage protection, low-pass filtering, and level conversion for the input signal, ensuring stable and accurate transmission of the PWM signal from the height sensor to the MCU. A bidirectional transient suppression diode protects the input from high-voltage pulses, while a combined inductor and capacitor filter removes high-frequency noise. A Schottky diode and pull-up resistor ensure signal level stability.

[0111] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0112] It should be understood that those skilled in the art can make improvements or changes based on the above description, and all such improvements and changes should fall within the scope of protection of the appended claims of the present invention.

Claims

1. A new dual-solenoid valve shock absorber control device, characterized by: Including a CDC controller, the vehicle is equipped with four shock absorbers, which are arranged at the four suspensions of the vehicle respectively. Each shock absorber is connected to two solenoid valves, and each solenoid valve is connected to the CDC controller.

2. The novel dual-solenoid valve shock absorber control device according to claim 1, characterized in that: The novel dual-solenoid valve shock absorber control device further comprises a three-axis vehicle body acceleration sensor, a vertical wheel acceleration sensor, and a vehicle body height sensor connected to the CDC controller.

3. The novel dual-solenoid valve shock absorber control device according to claim 2, characterized in that: The CDC controller includes a Buck step-down module, a WD watchdog module, an LDO low-dropout voltage regulator, a communication module, a central control unit MCU, and an H-bridge driver module. The output of the Buck step-down module is connected to the input of the LDO low-dropout voltage regulator and the input of the communication module. The output end of the WD watchdog module, the output end of the LDO low-dropout voltage regulator, and the output end of the communication module are connected to the central control unit MCU. The communication module is used to connect to each sensor. The output end of the central control unit MCU is connected to each solenoid valve through multiple H-bridge driver modules.

4. The novel dual-solenoid valve shock absorber control device according to claim 3 is characterized in that: The communication module includes a CAN communication module and a PSI5 communication module. The central control unit MCU is connected to the acceleration sensor on the vehicle through the PSI5 communication module, and the central control unit MCU is connected to the vehicle controller and the height sensor on the vehicle through the CAN communication module.

5. The novel dual-solenoid valve shock absorber control device according to claim 4, characterized in that: The CAN communication module includes resistor R32, inductor L8, capacitor C49, resistor R36, resistor R33, common-mode filter, transient voltage suppressor D6 and communication chip U5. One end of resistor R32 is connected to port 1 of communication chip U5, and the other end of resistor R32 serves as the CAN_TXD signal input end. Port 2 of communication chip U5 is grounded, one end of inductor L8 and one end of capacitor C49 are connected to port 3 of communication chip U5, the other end of inductor L8 is connected to 5V voltage, the other end of capacitor C49 is grounded, port 4 of communication chip U5 is connected to one end of resistor R36, and the other end of resistor R36 serves as the CAN_RXD signal input end. Ports 6 and 7 of communication chip U5 are respectively connected to the common-mode filter. Port No. 1 is connected to port No. 2, port No. 8 of the communication chip U5 is connected to resistor R33 and serves as the CAN_STB signal input terminal, the other end of resistor R33 is grounded, port No. 3 of the common mode filter is connected to one end of resistor R35, one end of capacitor C50 and port No. 1 of transient voltage suppressor D6, and serves as the CANL signal terminal output, port No. 4 of the common mode filter is connected to one end of resistor R34, one end of capacitor C47 and port No. 2 of transient voltage suppressor D6, and serves as the CANH signal terminal output, the other end of resistor R34 is connected to the other end of resistor R35 and one end of capacitor C48, the other end of capacitor C48 is grounded, and the other end of capacitor C47, the other end of capacitor C50 and transient voltage suppressor D6 are all grounded.

6. The novel dual-solenoid valve shock absorber control device according to claim 4, characterized in that: The PSI5 communication module includes a communication chip U7, a resistor R57, a resistor R58, a capacitor C52, a capacitor C53, a capacitor C54, a capacitor C55, a capacitor C56, a capacitor C57, a capacitor C58, a capacitor C59, a capacitor C60, a capacitor C61, a capacitor C62, a capacitor C63, a capacitor C64, an inductor L11, and an inductor L12. Port 1, port 5, port 2, port 6, port 3, port 23, port 24, port 25, port 32, and port 27 of the communication chip U7 are respectively connected to one end of resistor R43, one end of resistor R44, one end of resistor R45, one end of resistor R46, one end of resistor R47, one end of resistor R50, and one end of resistor R51. , one end of the resistor R52, one end of the resistor R54, one end of the resistor R55, port 26 of the communication chip U7 is connected to one end of the resistor R48 and one end of the resistor R49, the other end of the resistor R43 and the other end of the resistor R44 are respectively used as the SYNC1 connection end and the SYNC2 connection end, the other end of the resistor R45 and the other end of the resistor R46 are respectively used as the DOUT1 connection end and the DOUT2 connection end, the other end of the resistor R47 and the other end of the resistor R49 are grounded, the other end of the resistor R48, the other end of the resistor R50, the other end of the resistor R51, the other end of the resistor R52, and the other end of the resistor R54 are respectively used as the RST connection end, the MOSI connection end, the SCLK connection end, and the CS connection end , MISO connection end, port 30 and port 33 of the communication chip U7 are grounded, the other end of the resistor R55 is grounded, port 29 of the communication chip U7 is connected to one end of the capacitor C55, port 19 and port 20 of the communication chip U7 are connected to one end of the capacitor C52, one end of the capacitor C53, one end of the capacitor C54, one end of the inductor L11, one end of the capacitor C57 and the drain of the field effect transistor Q5, the other end of the inductor L11 is connected to a 12V voltage, port 31 of the communication chip U7 is connected to one end of the inductor L12 and one end of the capacitor C56, port 21 of the communication chip U7 is connected to the gate of the field effect transistor Q5, port 12 of the communication chip U7 is connected to one end of the capacitor C58, one end of the capacitor C59 and the drain of the field effect transistor Q5. The source of the effect tube Q5 is connected, the other end of the capacitor C52, the other end of the capacitor C53, the other end of the capacitor C54, the other end of the capacitor C55, the other end of the capacitor C56, the other end of the capacitor C57, the other end of the capacitor C58, and the other end of the capacitor C59 are all grounded, ports 8 and 9 of the communication chip U7 are respectively connected to the two ends of the capacitor C60, ports 16 and 17 of the communication chip U7 are respectively connected to the two ends of the capacitor C61, port 11 of the communication chip U7 is connected to one end of the capacitor C62 and one end of the resistor R53, port 10 of the communication chip U7 is connected to the other end of the capacitor C62, one end of the capacitor C63 and one end of the Schottky diode D6, and is connected to one end of the resistor R57.The other end of resistor R53 is connected to the other end of capacitor C63 and the other end of Schottky diode D6, and serves as the output end of PSI1. Port 14 of communication chip U7 is connected to one end of resistor R56 and one end of capacitor C64. Port 15 of communication chip U7 is connected to the other end of capacitor C64, one end of capacitor C65, and one end of Schottky diode D7, and is also connected to one end of resistor R58. The other end of resistor R56 is connected to the other end of capacitor C65 and the other end of Schottky diode D7, and serves as the output end of PSI2. The other end of resistor R57 is connected to the other end of resistor R58 and is grounded.

7. The novel dual-solenoid valve shock absorber control device according to claim 3, characterized in that: The H-bridge driver module includes an H-bridge driver chip U8, a resistor R59, a resistor R60, a resistor R61, a resistor R62, a resistor R63, a resistor R64, a resistor R65, a resistor R66, a resistor R67, a resistor R68, a resistor R69, a capacitor C66, a capacitor C67, a capacitor 68, a capacitor 69, a capacitor 70, a capacitor 71, a capacitor 72, a capacitor 73 and a capacitor C74; One end of resistor R59, one end of resistor R60, one end of resistor R61, one end of resistor R62, one end of resistor R63, one end of resistor R64, one end of resistor R65, one end of resistor R66, one end of resistor R67, one end of resistor R68, and one end of resistor R69 are respectively connected to port 1, port 3, port 5, port 4, port 6, port 2, port 8, port 7, port 17, port 16, and port 15 of the H-bridge driver chip U8. Port 1 of the H-bridge driver chip U8 serves as the NFAULT signal input terminal, and port 18 of the H-bridge driver chip U8 serves as the NFAULT signal input terminal. The other end of the resistor R60 is grounded, the other end of the resistor R61 is used as the input end of the ENB signal, the other end of the resistor R62 is used as the input end of the PWMA signal, the other end of the resistor R63 is used as the input end of the PWMB signal, the other end of the resistor R64 is used as the input end of the NSLEEP signal, port 15 and port 16 of the H-bridge driver chip U8 are used as the SOA signal input end and the SOB signal input end respectively, the other end of the resistor R67 is grounded, the other end of the resistor R68 and the other end of the resistor R69 are connected to one end of the capacitor C74, and the other end of the capacitor C74 is grounded; Ports 22, 24, and 26 of the H-bridge driver chip U8 are connected to one end of capacitor C66, one end of capacitor C67, one end of capacitor C68, and one end of capacitor C69. Port 19 of the H-bridge driver chip U8 is connected to the other end of capacitor C66. Ports 9, 11, and 13 of the H-bridge driver chip U8 are respectively connected to the other end of capacitor C67, the other end of capacitor C68, and the other end of capacitor C69, and are grounded. Ports 20 and 21 of the H-bridge driver chip U8 are respectively connected to capacitor C70. The two ends of the H-bridge driver chip U8 are connected, port 14 of the H-bridge driver chip U8 is connected to one end of the capacitor C71, and the other end of the capacitor C71 is grounded, port 10 and port 25 of the H-bridge driver chip U8 are connected to one end of the capacitor C73 and serve as the SA signal output end, port 12 and port 23 of the H-bridge driver chip U8 are connected to one end of the capacitor C72 and serve as the SB signal output end, the other end of the capacitor C72 and the other end of the capacitor C73 are grounded, and the other end of the resistor R65, the other end of the resistor R66 and the other end of the resistor R67 are grounded.

8. The novel dual-solenoid valve shock absorber control device according to claim 3, characterized in that: An acceleration sensor circuit is provided between the acceleration sensor and the central control unit MCU; The acceleration sensor circuit includes resistors R83, R84, R85, R86, R87, R88, R89, R90, field effect transistors Q9, Q10, Q11, Q12, capacitors C93, C94, C95 and an accelerometer chip U11. Port 1 of the accelerometer chip U11 is connected to one end of the resistor R89 ​​and the source of the field effect transistor Q10, and the other end of the resistor R89 ​​is connected to the source of the field effect transistor Q10. One end is connected to one end of the resistor R90, the drain of the field effect tube Q10 is connected to the resistor R87 and serves as the SCL input end, the other end of the resistor R87 is connected to one end of the resistor R88, the gate of the field effect tube Q10 and the gate of the field effect tube Q12, the No. 4 port of the accelerometer chip U11 is connected to the other end of the resistor R90 and the source of the field effect tube Q12, the drain of the field effect tube Q12 is connected to the other end of the resistor R88 and serves as the SDA input end, the accelerometer chip Ports 6, 7, and 8 of chip U11 are grounded, port 12 of accelerometer chip U11 is connected to one end of resistor R84 and the source of field effect transistor Q9, port 11 of accelerometer chip U11 is connected to one end of resistor R83 and the source of field effect transistor Q11, the other end of resistor R83 is connected to the other end of resistor R84, the gate of field effect transistor Q9 is connected to the gate of field effect transistor Q11, one end of resistor R85, and one end of resistor R86, and resistor R87 is connected to the other end of resistor R88. The other end of R86 is connected to the drain of the field effect transistor Q9 and serves as the output end of INT1. The other end of resistor R85 is connected to the drain of the field effect transistor Q11 and serves as the output end of INT2. Port 10 and port 9 of the accelerometer chip U11 are connected to one end of capacitor C93, one end of capacitor C94 and one end of capacitor C95, and are connected to a 1.8V voltage. The other end of capacitor C93 is connected to the other end of capacitor C94 and the other end of capacitor C95, and are grounded.

9. The novel dual-solenoid valve shock absorber control device according to claim 3, characterized in that: A height sensor signal filtering circuit is provided between the height sensor and the central control unit MCU; The height sensor signal filter circuit includes resistor R1, resistor R2, capacitor C1, capacitor C2, capacitor C3, capacitor C4, inductor L1, inductor L2, diode D1, diode D2 and ESD diode T1. Port 1 of ESD diode T1 is connected to one end of inductor L2 and one end of capacitor C1, and serves as the input end of PWM_IN2. Port 2 of ESD diode T1 is connected to one end of inductor L1 and one end of capacitor C2, and serves as the input end of PWM_IN1. The other end of inductor L1 is connected to the input end of PWM_IN1. One end is connected to the cathode of diode D1, the anode of diode D1 is connected to one end of resistor R1 and one end of capacitor C3, and serves as the output end of PWM_IN1_MCU1, the other end of resistor R1 is connected to one end of resistor R2 and connected to VDD voltage, the other end of resistor R2 is connected to one end of capacitor C4, the other end of capacitor C3 and the other end of capacitor C4 are grounded, the other end of inductor L2 is connected to the cathode of diode D2, and the anode of diode D2 serves as the output end of PWM_IN1_MCU2.

10. An automobile, characterized in that: The invention comprises a novel dual-solenoid valve shock absorber control device as described in any one of claims 1 to 9.

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