Electronic suspension controller based on intelligent control
By integrating an IMU chip and a multi-signal interface into the electronic suspension controller, the system failure problem caused by sensor failure was solved, multi-signal compatibility and user-controlled suspension adjustment were achieved, and the system's flexibility and adaptability were improved.
Patent Information
- Application Number
- CN202520081034.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-14
- Publication Date
- 2026-02-06
- Estimated Expiration
- 2035-01-14
AI Technical Summary
Existing electronic suspension controllers rely on independent sensors, which leads to system malfunction when the sensors fail. They also lack compatibility with multiple signal interfaces, flexibility, and adaptability, and cannot meet the intelligent control requirements under complex conditions.
An intelligent control-based electronic suspension controller was designed, which includes a power supply circuit, a vehicle communication circuit, a sensing unit signal input circuit, an execution unit control circuit, and a Bluetooth communication circuit. It integrates an IMU chip, a PSI5 RF transceiver chip, an SPI interface control driver chip, and a solenoid valve driver chip, realizing 24-channel sensor data input and 4-channel solenoid valve control, and supports Bluetooth connection for suspension adjustment.
It can still operate effectively when the sensor fails, achieves multi-signal interface compatibility, enhances the system's flexibility and adaptability, and allows users to adjust the suspension via a mobile APP, meeting the intelligent control needs in complex situations.
Smart Images
Figure CN223877822U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present disclosure relates to the technical field of vehicle automatic control, in particular to an electronic suspension controller based on intelligent control. BACKGROUND
[0002] The automobile chassis suspension system has been over a hundred years since the invention and development of the automobile. From the pure mechanical system in the 21st century to the semi-active, fully active suspension and higher level intelligent electronic control suspension system today, it can realize artificial passive intervention selection and active adaptive damping force, vehicle height, stiffness adjustment according to complex environments such as road conditions and weather, greatly improving the vehicle handling, comfort and safety. The automobile suspension begins to develop towards intelligence.
[0003] However, the existing electronic controller (ECU) relies on independent acceleration sensors and height sensors to obtain vehicle state information. Once the independent sensors fail, effective control cannot be performed, resulting in failure of the entire intelligent suspension system function or reduction of performance efficiency. The signal type and number of the sensing unit are fixed and single, and cannot be compatible with multiple signal interfaces and numbers, lacking flexibility and adaptability. The signal type and number of the execution unit are fixed and single, and cannot be compatible with electronic control and electromagnetic shock absorbers. The ECU algorithm control result has differences, and the vehicle user (owner) cannot change the vehicle suspension configuration independently. Moreover, the existing electronic controller cannot meet the complex conditions of low-voltage, high-frequency signals of input sensors, high-current, low-frequency signals of output actuators and power signals in intelligent control electronic suspension controllers.
[0004] Therefore, there is an urgent need for an intelligent electronic suspension control device that can effectively realize the intelligentization of automobile suspension. CONTENT OF THE INVENTION
[0005] The present disclosure provides an electronic suspension controller based on intelligent control, which solves the technical problems of poor control effect, low compatibility and inability to meet complex conditions of the existing suspension management device by expanding the input, output and control mode options of the ECU end and meeting the core needs of vehicle users.
[0006] According to a first aspect of the present disclosure, an electronic suspension controller based on intelligent control is provided, comprising an upper shell, a control circuit board and a lower shell, wherein the control circuit board comprises: a power supply circuit, a whole vehicle communication circuit, a sensing unit signal input circuit, an execution unit control circuit, a Bluetooth communication circuit and an MCU micro control unit.
[0007] The power supply circuit is used to continuously power the electronic suspension controller.
[0008] The whole vehicle communication circuit is connected with the MCU micro control unit, and is used for realizing real-time communication with other elements of the automobile and transmitting communication data to the MCU micro control unit.
[0009] The sensing unit signal input circuit is connected with the whole vehicle communication circuit and the MCU micro control unit respectively, and is used for receiving transmission data of different sensors of the automobile through the whole vehicle communication circuit and transmitting the data to the MCU micro control unit.
[0010] The execution unit control circuit is connected with the MCU micro control unit, and is used for regulating and controlling the automobile motion system based on data in the MCU micro control unit.
[0011] The Bluetooth communication circuit is connected with the MCU micro control unit, and is used for receiving data of a user terminal and transmitting the data to the MCU micro control unit, so as to realize data transparent transmission between the user terminal and the automobile.
[0012] According to the aspect and any possible implementation manner, further provided is an implementation manner, wherein the power supply circuit comprises a whole vehicle battery, a filter protection circuit and an SBC power supply chip connected in sequence.
[0013] The filter protection circuit is used for filtering and protecting the output current of the whole vehicle battery.
[0014] The SBC power supply chip is used for reducing and shunting the output voltage of the whole vehicle battery, so as to realize stable power supply.
[0015] According to the aspect and any possible implementation manner, further provided is an implementation manner, wherein the whole vehicle communication circuit comprises two CAN radio frequency transceiver chips; one of the CAN radio frequency transceiver chips is integrated in the SBC power supply chip, and the other is connected to an automobile whole vehicle diagnosis CAN bus, and is used for realizing XCP calibration function.
[0016] According to the aspect and any possible implementation manner, further provided is an implementation manner, wherein the sensing unit signal input circuit comprises a PSI5 radio frequency transceiver chip and an MCU chip.
[0017] The PSI5 radio frequency transceiver chip is electrically connected with an automobile acceleration sensor and an altitude sensor, and is used for realizing signal reception of 24 external sensors.
[0018] The MCU chip is internally provided with an IMU chip, which obtains three-axis gyroscope and three-axis accelerometer data output by the IMU chip through an SPI interface.
[0019] As the aspect and any possible implementation manner described above, further provided is an implementation manner, the PSI5 radio frequency transceiver chip comprises 4 channels, and the signal in each channel accesses 6 sensors.
[0020] As the aspect and any possible implementation manner described above, further provided is an implementation manner, the execution unit control circuit comprises an SPI interface control driving chip, an electromagnetic valve driving chip and a current detection loop.
[0021] The SPI interface control driving chip is controlled by an MCU, and the opening proportion of the 4-way CDC electromagnetic valve is realized by configuring a MOSFET switch, so as to adjust the damping force of the shock absorber.
[0022] The electromagnetic valve driving chip adopts 8-channel high-side driving, and 4 MOSFETs are reserved to realize the adjustment of the 4-way shock absorber recovery valve.
[0023] The current detection loop is used for controlling the current signal precision, realizing the input, calculation, output and effect loop of the intelligent suspension system.
[0024] As the aspect and any possible implementation manner described above, further provided is an implementation manner, the Bluetooth communication circuit adopts an on-board Bluetooth module to realize data transparent transmission function by serial communication with an MCU, and completes the wireless control of the damping force of the CDC shock absorber and the MRC shock absorber by a mobile phone APP.
[0025] As the aspect and any possible implementation manner described above, further provided is an implementation manner, the upper shell adopts PC and ABC materials, and the surface is subjected to black frosted and chamfered treatment, and the upper shell is internally provided with a reinforcing rib.
[0026] As the aspect and any possible implementation manner described above, further provided is an implementation manner, the lower shell adopts aluminum material, and the surface is subjected to silver frosted treatment, and the lower shell is integrated with a mounting support gap and an internal support column fixed with a control circuit board.
[0027] As the aspect and any possible implementation manner described above, further provided is an implementation manner, the electronic suspension controller is further provided with a connector, the connector adopts a 39PIN pin design, and comprises a power domain, a signal domain and an actuator output signal.
[0028] Compared with the prior art, the utility model has the following beneficial effects:
[0029] (1) The ECU device of the present disclosure adds an embedded IMU chip, realizes the detection of the attitude information, vibration and tilt of the vehicle without relying on an external sensing unit, and ensures that the intelligent suspension system can still effectively operate the whole vehicle in the case of sensor failure or invalid data;
[0030] (2) The sensing unit of the present disclosure communicates with the ECU using 4-way PSI5 channels, realizes the input of up to 24-way sensor data into the ECU, and simultaneously reserves AD data interfaces to realize the input of acceleration sensor analog signals, height sensor analog signals and PWM signals;
[0031] (3) The execution unit of the present disclosure can realize 4-way CDC solenoid control, and simultaneously realizes the compatibility of 4-way MRC coil current control to realize the compatibility of CDC and MRC shock absorbers;
[0032] (4) The ECU of the present disclosure adds a BLE (Bluetooth Low Energy) Bluetooth low power module, realizes the connection of a mobile phone to the ECU through Bluetooth, and realizes the adjustment of the automobile suspension by the user (the owner) of the vehicle through the APP control of the execution unit.
[0033] It should be understood that the content described in the utility model content part is not intended to limit the key or important features of the embodiments of the present disclosure, nor to limit the scope of the present disclosure. Other features of the present disclosure will become apparent through the following description. BRIEF DESCRIPTION OF DRAWINGS
[0034] The above and other features, advantages and aspects of the embodiments of the present disclosure will become more apparent by describing in detail the following embodiments with reference to the attached drawings. The accompanying drawings are used to better understand the present scheme, and do not constitute a limitation on the present disclosure. In the drawings, the same or similar reference numerals refer to the same or similar elements. Wherein:
[0035] Figure 1 A structure schematic diagram of an electronic suspension controller based on intelligent control according to an embodiment of the present disclosure is shown;
[0036] Figure 2 An explosion diagram of an electronic suspension controller based on intelligent control according to an embodiment of the present disclosure is shown;
[0037] Figure 3 A circuit structure schematic diagram of a control circuit board of an electronic suspension controller based on intelligent control according to an embodiment of the present disclosure is shown;
[0038] Figure 4 A connector structure schematic diagram of an electronic suspension controller based on intelligent control according to an embodiment of the present disclosure is shown;
[0039] Figure 5An electronic suspension controller based on intelligent control is shown according to an embodiment of the present disclosure
[0040] A power supply circuit structure schematic diagram is shown
[0041] Figure 6 An electronic suspension controller based on intelligent control sensing unit signal input circuit structure schematic diagram is shown according to an embodiment of the present disclosure
[0042] Figure 7 An electronic suspension controller based on intelligent control execution unit control circuit structure schematic diagram is shown according to an embodiment of the present disclosure
[0043] Figure 8 An electronic suspension controller based on intelligent control Bluetooth communication circuit structure schematic diagram is shown according to an embodiment of the present disclosure
[0044] Figure 9 An electronic suspension controller based on intelligent control software system structure schematic diagram is shown according to an embodiment of the present disclosure DETAILED DESCRIPTION
[0045] In order to make the purpose, technical scheme and advantages of the embodiments of the present disclosure clearer, the technical scheme in the embodiments of the present disclosure will be described clearly and completely below with reference to the drawings in the embodiments of the present disclosure. Obviously, the described embodiments are part of the embodiments of the present disclosure, rather than all the embodiments. Based on the embodiments in the present disclosure, all other embodiments obtained by those of ordinary skill in the art without creative labor fall within the scope of the present disclosure.
[0046] In order to make the above-mentioned purpose, features and advantages of the present utility model more obvious and easy to understand, the present utility model will be further described in detail below with reference to the drawings and specific embodiments.
[0047] Please refer to Figures 1-3 As shown in the figure, the present utility model provides an electronic suspension controller based on intelligent control, which comprises an upper shell 11, a control circuit board 12 and a lower shell 13, wherein the control circuit board 12 comprises a hardware system and a software system, the hardware system comprises a power supply circuit 1, a whole vehicle communication circuit 2, a sensing unit signal input circuit 3, an execution unit control circuit 4, a Bluetooth communication circuit 5 and a MCU micro control unit;
[0048] The power supply circuit 1 is used for continuously supplying power to the electronic suspension controller;
[0049] The whole vehicle communication circuit 2 is connected with the MCU micro control unit, which is used for realizing real-time communication with other elements of the automobile and transmitting communication data to the MCU micro control unit;
[0050] The perception unit signal input circuit 3 is connected with the vehicle communication circuit 2 and the MCU micro control unit, for receiving the transmission data of different sensors of the vehicle through the vehicle communication circuit 2 and transmitting to the MCU micro control unit;
[0051] The execution unit control circuit 4 is connected with the MCU micro control unit, for regulating and controlling the vehicle motion system based on the data in the MCU micro control unit;
[0052] The Bluetooth communication circuit 5 is connected with the MCU micro control unit, for receiving the data of the user terminal and transmitting to the MCU micro control unit, realizing the data transparent transmission between the user terminal and the vehicle.
[0053] The embodiment is based on the three-layer architecture design of the overall structure of the product, including the upper shell, the connector + PCBA, and the lower shell + mounting bracket. The upper shell of the product structure is made of PC + ABC material, the surface is black frosted and chamfered, and multiple reinforcing ribs are added inside. A waterproof gasket groove is added at the connection with the lower shell to increase the waterproofness.
[0054] The product connector adopts a 39PIN pin design, which is divided into regions according to signal types. The left region is the power domain, supporting a current load of more than 30A. The right region is the actuator output signal, also supporting a current load of more than 30A. The middle region is the signal domain, realizing functions such as perception signal and vehicle bus interaction. The specific division is shown in Figure 4 .
[0055] The lower shell of the product structure is made of cast aluminum material, with a silver frosted surface. It also integrates mounting bracket holes and internal support posts for fixing the PCBA, improving the overall IP6K7 waterproof level of the product and meeting the rapid heat dissipation requirements in ECU high-frequency control scenarios.
[0056] Further, as shown in Figure 5 , the power supply circuit 1 includes a vehicle battery, a filter protection circuit, and an SBC power supply chip connected in sequence;
[0057] The filter protection circuit is used for filtering and protecting the output current of the vehicle battery;
[0058] The SBC power supply chip is used for voltage reduction and shunt of the output voltage of the vehicle battery, realizing stable power supply.
[0059] In the embodiment, the power supply circuit is powered by the vehicle 12V battery, and is subjected to voltage reduction and shunt through the filter protection circuit and the SBC power supply chip, realizing multi-module power supply.
[0060] Further, the whole vehicle communication circuit 2 includes two CAN radio frequency transceiver chips; one of the two CAN radio frequency transceiver chips is integrated in the SBC power supply chip, and the other is connected to the automobile whole vehicle diagnosis CAN bus, for realizing the XCP calibration function.
[0061] In the embodiment, the whole vehicle communication circuit, i.e. the whole vehicle CAN bus circuit, adopts two CAN Transceivers to realize the CAN&CAN FD communication function, wherein the first CAN is integrated in the SBC chip in the power supply circuit and is connected to the whole vehicle chassis CAN bus, and the second CAN adopts an independent CAN Transceiver chip and is connected to the whole vehicle diagnosis CAN bus, for realizing the XCP calibration function.
[0062] Further, as shown in Figure 6 , the sensing unit signal input circuit 3 includes a PSI5 radio frequency transceiver chip and an MCU chip;
[0063] The PSI5 radio frequency transceiver chip is electrically connected with the automobile acceleration sensor and the height sensor, for realizing the signal reception of 24 external sensors;
[0064] The MCU chip is internally provided with an IMU chip, which obtains the three-axis gyroscope and three-axis accelerometer data output by the IMU chip through the SPI interface, and can realize the detection of the attitude information, vibration and inclination of the vehicle without relying on external sensing units, so as to ensure that the intelligent suspension system can still effectively operate the whole vehicle in the case of sensor failure or invalid data.
[0065] In the embodiment, the sensing unit signal input circuit adopts the PSI5 Transceiver to realize the access of up to 24 external acceleration sensors and height sensors, and the MCU chip obtains the three-axis gyroscope and three-axis accelerometer data output by the IMU (inertial measurement unit) chip through the SPI interface. As shown in Figure 4 , the SF, i.e. the PSI5 channel, has four paths and transmits through the current carrier signal, each SF signal can access up to 6 sensors, so up to 24 sensors can be accessed, wherein the PSI5 (Peripheral Sensor Interface 5) is an open standard interface specially designed for automobile applications, mainly used for the communication between sensors and electronic control units (ECU).
[0066] Further, as shown in Figure 7 , the execution unit control circuit 4 includes an SPI interface control driving chip, an electromagnetic valve driving chip and a current detection loop;
[0067] The SPI interface control driving chip is controlled by MCU, and the MOSFET switch is configured to realize the opening proportion of the 4-way CDC electromagnetic valve with current size adjustment, and the damping force of the shock absorber is adjusted.
[0068] The electromagnetic valve driving chip adopts 8-channel high-side driving, and 4-way MOSFET is reserved to realize the adjustment of the 4-way shock absorber recovery valve.
[0069] The current detection loop is used for controlling the current signal accuracy, realizing the input, calculation, output and effect loop of the intelligent suspension system.
[0070] In the embodiment, the execution unit signal output is configured by the MOSFET switch of the SPI interface control driving chip of the MCU, the opening proportion of the 4-way CDC (Continuous Damping Control) continuous adjustable damping system electromagnetic valve is realized by current size adjustment, and the damping force of the shock absorber is adjusted. The electromagnetic valve driving chip adopts 8-channel high-side driving, and 4-way MOSFET is reserved to realize the adjustment of the 4-way shock absorber recovery valve. In order to guarantee the ECU control algorithm result confirmation, the current detection loop is added, the current signal control accuracy is guaranteed, and the input, calculation, output and effect loop of the intelligent suspension system are realized.
[0071] Further, as shown in Figure 8 The Bluetooth communication circuit 5 adopts the on-board Bluetooth module to realize data transparent transmission function and complete wireless control of the CDC shock absorber and MRC shock absorber damping force by the mobile phone APP through serial communication with the MCU.
[0072] In the embodiment, as shown in Figure 9 The control circuit board 12 adopts layered architecture design in software design, including a basic layer (bottom interface), a middle layer and an application layer. The overall architecture uses AutoSar, including an abstract layer (mcal) using AUTOSAR MCAL architecture, which improves the software reusability and maintainability. The bottom layer (BootLoader) and the application layer (Application) are highly decoupled, can be quickly adapted to different chips, and improve the maintainability of the application layer logic.
[0073] The above specific embodiments of the utility model do not constitute a limitation on the protection scope of the present disclosure. Those skilled in the art should understand that various modifications, combinations, sub-combinations and substitutions can be made according to design requirements and other factors. Any modification, equivalent substitution and improvement within the spirit and principles of the present disclosure should be included in the protection scope of the present disclosure.
Claims
1. An intelligent control based electronic suspension controller characterized by, The electronic suspension controller comprises an upper shell (11), a control circuit board (12) and a lower shell (13), wherein the control circuit board (12) comprises a power supply circuit (1), a whole vehicle communication circuit (2), a sensing unit signal input circuit (3), an execution unit control circuit (4), a Bluetooth communication circuit (5) and an MCU micro control unit; The power supply circuit (1) is used for continuously supplying power to the electronic suspension controller; The whole vehicle communication circuit (2) is connected with the MCU micro control unit, and is used for realizing real-time communication with other elements of the automobile and transmitting communication data to the MCU micro control unit; The sensing unit signal input circuit (3) is connected with the whole vehicle communication circuit (2) and the MCU micro control unit respectively, is used for receiving transmission data of different sensors of the automobile through the whole vehicle communication circuit (2) and transmitting the data to the MCU micro control unit; The execution unit control circuit (4) is connected with the MCU micro control unit, and is used for regulating the motion system of the automobile based on the data in the MCU micro control unit; The Bluetooth communication circuit (5) is connected with the MCU micro control unit, is used for receiving data of a user terminal and transmitting the data to the MCU micro control unit, and realizes data transparent transmission between the user terminal and the automobile.
2. The smart control based electronic suspension controller according to claim 1, wherein, The power supply circuit (1) comprises a whole vehicle battery, a filter protection circuit and an SBC power supply chip connected in sequence; The filter protection circuit is used for filtering and protecting the output current of the whole vehicle battery; The SBC power supply chip is used for voltage reduction and current diversion of the output voltage of the whole vehicle battery, so as to realize stable power supply.
3. The smart control based electronic suspension controller according to claim 2, wherein, The whole vehicle communication circuit (2) comprises two CAN radio frequency transceiver chips; one of the CAN radio frequency transceiver chips is integrated in the SBC power supply chip, and the other is connected to the automobile whole vehicle diagnosis CAN bus, and is used for realizing XCP calibration function.
4. The smart control based electronic suspension controller according to claim 1, wherein, The sensing unit signal input circuit (3) comprises a PSI5 radio frequency transceiver chip and an MCU chip; The PSI5 radio frequency transceiver chip is electrically connected with an automobile acceleration sensor and a height sensor, and is used for realizing signal reception of 24 external sensors; The MCU chip is internally provided with an IMU chip, which obtains three-axis gyroscope and three-axis accelerometer data output by the IMU chip through an SPI interface.
5. The smart control based electronic suspension controller according to claim 4, wherein, The PSI5 radio frequency transceiver chip comprises four channels, and each channel is connected with six sensors.
6. The smart control based electronic suspension controller according to claim 1, wherein, The execution unit control circuit (4) comprises an SPI interface control driving chip, an electromagnetic valve driving chip and a current detection loop; The SPI interface control driving chip is controlled by an MCU, and is used for adjusting the opening ratio of four CDC electromagnetic valves by configuring MOSFET switches, so as to adjust the damping force of the shock absorber; The electromagnetic valve driving chip adopts 8-channel high-side driving, and reserves four MOSFETs to realize adjustment of four shock absorber recovery valves; The current detection loop is used for controlling the accuracy of current signals, and realizes input, calculation, output and effect loop of the intelligent suspension system.
7. The smart control based electronic suspension controller according to claim 1, wherein, The Bluetooth communication circuit (5) adopts an on-board Bluetooth module to communicate with the MCU through a serial port, realizes data transparent transmission function, and completes the wireless control of the damping force adjustment of the CDC damper and the MRC damper by the mobile phone APP.
8. The smart control based electronic suspension controller according to claim 1, wherein, The upper shell (11) is made of PC and ABC materials, and the surface is subjected to black frosted and chamfered treatment, and the upper shell (11) is internally provided with reinforcing ribs.
9. The smart control based electronic suspension controller according to claim 1, wherein, The lower shell (13) is made of cast aluminum material, and the surface is subjected to silver frosted treatment, and the lower shell (13) is integrated with a mounting bracket gap and an internal support column fixed with the control circuit board (12).
10. The smart control based electronic suspension controller according to claim 1, wherein, The electronic suspension controller is further provided with a connector, the connector adopts a 39PIN pin design, and includes a power domain, a signal domain and an actuator output signal.