Electric hydraulic power steering system and vehicle

Abstract

The invention provides an electro-hydraulic power steering system and a vehicle, and relates to the technical field of automobile electronic equipment, the electro-hydraulic power steering system comprises a signal collecting and processing system, a hydraulic system, a steering system and a remote monitoring system; the signal acquisition and processing system comprises a digital signal processor, a pressure sensor, an angle sensor and a wireless communication module; the digital signal processor is connected with the pressure sensor, the angle sensor and the wireless communication module. By arranging the pressure sensor and the angle sensor, the digital signal processor can accurately control the hydraulic system and the steering system, and the real-time system state can be mastered. Moreover, the wireless communication module is adopted, wireless communication connection with a remote monitoring system can be achieved, remote real-time monitoring of the hydraulic system and the steering system is achieved, and compared with wired communication, the remote monitoring experience of a user can be improved.

Description

Technical Field

[0001] The present invention relates to the technical field of automotive electronic equipment, and in particular to an electric hydraulic power steering system and a vehicle. Background Art

[0002] Traditional hydraulic power steering (HPS) systems have problems of low energy efficiency and slow response speed, and electric power steering (EPS) systems may not provide enough power in heavy-load or high-performance vehicles. The electrically powered hydraulic steering (EHPS) system combines the advantages of HPS and EPS, providing both efficient steering assistance and flexible control performance. It can effectively improve the steering characteristics and handling stability of the vehicle, improve the safety and comfort of the driver, and coordinate the contradiction between the requirements of light steering at low speeds and the requirements of steering road feel at high speeds.

[0003] However, the sensors integrated on the existing EHPS are not sufficient to achieve status monitoring. Moreover, the EHPS and the remote monitoring platform mostly communicate via Ethernet ports, serial ports, etc., which results in poor remote monitoring experience for users. Summary of the invention

[0004] The present invention provides an electric hydraulic power steering system and a vehicle, which are used to solve the defects existing in the related art.

[0005] The present invention provides an electric hydraulic power steering system, comprising: a signal acquisition and processing system, a hydraulic system, a steering system and a remote monitoring system; The signal acquisition and processing system comprises a digital signal processor, a pressure sensor, an angle sensor and a wireless communication module; the digital signal processor is connected to the pressure sensor, the angle sensor and the wireless communication module respectively; The pressure sensor is installed at a key position of the hydraulic system and is used to monitor the pressure information of the hydraulic system in real time; The angle sensor is installed at a key position of the steering system and is used to monitor the angle information of the steering system in real time; The wireless communication module is used to establish a communication connection between the digital signal processor and the remote monitoring system; The digital signal processor is used to receive the pressure information and the angle information, perform digital signal processing on the pressure information and the angle information, and analyze and control the hydraulic system and the steering system based on the processing results.

[0006] According to an electric hydraulic power steering system provided by the present invention, the digital signal processor is specifically used for: Based on the processing result corresponding to the pressure information, fault detection is performed to obtain a first detection result, and the first detection result is transmitted to the remote monitoring system through the wireless communication module; Based on the processing result corresponding to the angle information, fault detection is performed to obtain a second detection result, and the second detection result is transmitted to the remote monitoring system through the wireless communication module; Based on the processing result corresponding to the pressure information and the processing result corresponding to the angle information, a joint fault detection is performed to obtain a third detection result, and the third detection result is transmitted to the remote monitoring system through the wireless communication module.

[0007] According to an electric hydraulic power steering system provided by the present invention, the digital signal processor is also used for: When at least one of the first detection result, the second detection result, and the third detection result indicates that a fault exists, a real-time alarm is issued.

[0008] According to an electric hydraulic power steering system provided by the present invention, the pressure sensor and the angle sensor are both redundantly arranged; The digital signal processor is also used for: If it is determined that there is a failed sensor, the redundant sensor corresponding to the failed sensor is switched to operate.

[0009] According to an electric hydraulic power steering system provided by the present invention, the wireless communication module includes a wifi module or a LoRa module.

[0010] According to an electric hydraulic power steering system provided by the present invention, the digital signal processor is also used for: Receiving system data of the hydraulic system and the steering system, and transmitting the system data to the remote monitoring system through the wireless communication module; The remote monitoring system is configured with a user interaction interface; The user interaction interface is configured with a graphical dashboard, and the graphical dashboard is used to graphically display the processing results; The user interaction interface is also used to receive user configuration information and access requests, and display the system data to the user.

[0011] According to an electric hydraulic power steering system provided by the present invention, the remote monitoring system includes an authentication module; The authentication module is used to authenticate and authorize the user.

[0012] According to an electric hydraulic power steering system provided by the present invention, the pressure sensor and the angle sensor may be configured with one of an analog interface, a digital interface and a wireless interface.

[0013] An electric hydraulic power steering system provided according to the present invention further includes a data encryption module and / or a data backup module; The data encryption module is used to encrypt system data; The data backup module is used to regularly back up the system data.

[0014] The present invention also provides a vehicle, comprising the above-mentioned electric hydraulic power steering system.

[0015] The electric hydraulic power steering system and vehicle provided by the present invention include: a signal acquisition and processing system, a hydraulic system, a steering system and a remote monitoring system; the signal acquisition and processing system includes a digital signal processor, a pressure sensor, an angle sensor and a wireless communication module; the digital signal processor is connected to the pressure sensor, the angle sensor and the wireless communication module respectively. By setting the pressure sensor and the angle sensor, the digital signal processor can realize accurate control of the hydraulic system and the steering system, and can grasp the real-time system status. Moreover, the wireless communication module is adopted, which can realize wireless communication connection with the remote monitoring system, realize remote real-time monitoring of the hydraulic system and the steering system, and can improve the user's remote monitoring experience compared with wired communication. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the present invention or related technologies, the drawings required for use in the embodiments or related technical descriptions are briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 It is a structural schematic diagram of the electric hydraulic power steering system provided by the present invention.

[0018] Figure 2 It is a structural schematic diagram of a vehicle provided by the present invention. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the drawings of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0020] Figure 1 FIG. 1 is a schematic diagram of the structure of an electric hydraulic power steering system provided in an embodiment of the present invention. Figure 1 As shown, the electric hydraulic power steering system includes: a signal acquisition and processing system 1, a hydraulic system 2, a steering system 3 and a remote monitoring system 4; The signal acquisition and processing system 1 comprises a digital signal processor 11, a pressure sensor 12, an angle sensor 13 and a wireless communication module 14; the digital signal processor 11 is connected to the pressure sensor 12, the angle sensor 13 and the wireless communication module 14 respectively; The pressure sensor 12 is installed at a key position of the hydraulic system 2 and is used to monitor the pressure information of the hydraulic system 2 in real time; The angle sensor 13 is installed at a key position of the steering system 3 and is used to monitor the angle information of the steering system 3 in real time; The wireless communication module 14 is used to establish a communication connection between the digital signal processor 11 and the remote monitoring system 4; The digital signal processor 11 is used to receive the pressure information and the angle information, and perform digital signal processing on the pressure information and the angle information, and analyze and control the hydraulic system 2 and the steering system 3 based on the processing results.

[0021] Specifically, the electric hydraulic power steering system provided in the embodiment of the present invention drives the hydraulic pump through an electric motor to improve energy efficiency and response speed. Combining the advantages of the hydraulic system and the electric system, it can provide higher power output and is suitable for heavy-load and high-performance vehicles.

[0022] The Digital Signal Processing (DSP) 11 needs to be selected based on the performance requirements of the system. The processing power, clock frequency, memory capacity, power consumption and cost of the DSP 11 also need to be considered, which is crucial to the feasibility and performance of the system.

[0023] Among them, the system performance requirements include data processing speed requirements, data storage capacity requirements, and interface requirements of other components. The data processing speed requirements can be determined by analyzing the system's computing load, including data acquisition, processing, communication, and control tasks.

[0024] The type of DSP 11 can be determined according to the performance requirements of the system, for example, it can be a fixed-point DSP or a floating-point DSP to meet the requirements of real-time data processing and transmission of the system.

[0025] The processing capability of DSP11 refers to the computing tasks that DSP11 can complete in a unit of time, which is usually related to factors such as the computing architecture, parallel processing capability, and data path width of DSP11.

[0026] The clock frequency of the DSP11 refers to the number of clock cycles that the DSP11 can execute per second, which affects the speed at which it executes instructions. The higher the clock frequency, the faster the DSP11 can process tasks, but it also increases power consumption and heat generation.

[0027] The memory capacity of DSP11 affects how much information DSP11 can store when processing data, especially when there is high-resolution sensor data, a larger memory capacity is required.

[0028] The power consumption of the DSP11 is another critical consideration. In automotive applications, power consumption management is critical to extend battery life and reduce heat emissions. Therefore, it is necessary to select a low-power DSP11. Power consumption evaluation needs to consider the static power consumption and dynamic power consumption of the DSP11 to ensure that the system can maintain a reasonable power consumption level when running.

[0029] The cost of DSP11 includes the purchase cost, development cost, and maintenance cost of DSP11. A balance needs to be struck between performance requirements and costs to ensure that the system is implemented within the budget. In addition, the availability and supply chain stability of DSP11 should also be considered to avoid future supply problems.

[0030] After selecting a suitable DSP11, it is necessary to develop a DSP program. The analog-to-digital converter (ADC) can be used to realize real-time data acquisition and processing, and the digital signal processing algorithm can be used to extract useful parameter information. The digital signal processing algorithm can include filtering algorithm, sampling algorithm and Fourier transform algorithm to ensure the real-time and high-precision of data processing.

[0031] In the DSP program, data buffering and data transfer strategies should be implemented to minimize the power consumption of data transfer, especially for battery-powered mobile systems.

[0032] When developing a DSP program, you need to consider the complexity of the algorithm, the DSP processing speed, and the calculation accuracy. Generally, the processing speed of a high-performance DSP program can be increased by the clock frequency while maintaining sufficient numerical precision to ensure data accuracy. In addition, a suitable data storage structure and data transmission protocol can also optimize the performance of the DSP program.

[0033] Testing and verification of DSP11 is also indispensable. The reliability and real-time performance of data transmission must be verified by testing, including transmission range, delay, and packet loss rate. These tests can ensure that data is transmitted reliably under various environmental conditions, and is received and processed in real time at the monitoring site.

[0034] The pressure sensor 12 may be installed at a key position of the hydraulic system 2 to monitor the pressure information of the hydraulic system 2 in real time. The key position of the hydraulic system 2 may include one or more positions of the inlet and outlet of the hydraulic pipeline, the inlet and outlet of the pump, and the inlet and outlet of the actuator. The installation position of the pressure sensor 12 may be determined based on the accessibility, accuracy, reliability of the pressure sensor 12 and the coordination of other components.

[0035] The pressure information may be the pressure change of the hydraulic fluid in the hydraulic system. The pressure sensor 12 may be a piezoelectric pressure sensor or a strain gauge pressure sensor. If a more sensitive response to dynamic changes is required, a strain gauge pressure sensor may be preferred. The pressure sensor 12 may be used to monitor the pressure changes in the system in real time, especially abnormal conditions such as hydraulic leakage, overpressure, overload, etc., thereby improving safety and performance.

[0036] The angle sensor 13 can be installed at a key position of the steering system 3 to monitor the angle information of the hydraulic system 3 in real time. The key position of the steering system 3 can be a steering frame, a wheel steering arm, etc., to accurately monitor the wheel steering angle, thereby providing accurate control information to ensure vehicle stability and controllability. The installation position of the angle sensor 13 can be determined based on the accessibility, accuracy, reliability of the angle sensor 13 and the coordination of other components.

[0037] The angle sensor 13 may include a potentiometer angle sensor, a Hall effect angle sensor or an optical angle sensor, and may be selected based on accuracy, response speed and anti-interference capability.

[0038] The digital signal processor 11 is connected to the pressure sensor 12 and the angle sensor 13 respectively, and can receive pressure information and angle information, and perform digital signal processing on the pressure information and angle information. For example, if the pressure information and the angle information are both analog signals, they can be first converted into digital signals through the ADC, and then filtered, sampled, Fourier transformed and other operations can be performed in sequence through filtering algorithms, sampling algorithms, Fourier transform algorithms and other algorithms to obtain the processed results.

[0039] Here, the output of the ADC is usually expressed in discrete time form: ; Where x[n] is the discrete-time digital signal, a[n] is the analog signal, and f(⋅) represents the ADC transfer function.

[0040] For the pressure information, a filter can be used to remove high frequency noise: ; Where y[n] is the filtered signal, h[k] is the impulse response of the filter, and N is the filter length.

[0041] Here, the filter length is the length of the filter impulse response sequence, i.e. the number of samples of the filter. It represents the range of the signal that the filter "senses" in time or space. In other words, the effect of the filter on the input signal is realized through these N samples. For example, for a finite impulse response filter (FIR filter), N represents the amount of historical input data used by the filter. For a filter with N coefficients, the first N input samples need to be considered when calculating the output.

[0042] A longer filter length means that the filter will consider a longer period of signal history to calculate the current output. This generally improves the smoothing effect of the filter, but may also increase computational complexity and latency. Shorter filter lengths are faster to respond and are suitable for rapidly changing signals, but may not suppress noise as effectively as long filters.

[0043] For angle information, the angle value is calculated based on the output of the angle sensor.

[0044] Thereafter, the hydraulic system 2 and the steering system 3 may be analyzed and controlled using the processing results.

[0045] DSP11 is also connected to the wireless communication module 14, and is connected to the remote monitoring system 4 through the wireless communication module 14, and can transmit system data such as pressure information, angle information, processing results, system status, etc. to the remote monitoring system 4, so that users can view the system data in time through the remote monitoring system 4.

[0046] It is understandable that the remote monitoring platform 4 can be expandable and upgradeable to adapt to future needs and technological advances. The remote monitoring platform 4 can support a variety of devices, including mobile devices and desktop computers, so that users can access the system anytime, anywhere.

[0047] In addition, the signal acquisition and processing system 1 may also include a temperature sensor, which can be installed at the temperature detection position to monitor the temperature information of the temperature detection position in real time, and can send the temperature information to the DPS11. The DPS11 can perform digital signal processing on the temperature information, and analyze and control the hydraulic system 2 and the steering system 3 based on the processing results, and can also send the processing results and temperature information to the remote monitoring system 4 through the wireless communication module 14.

[0048] The electric hydraulic power steering system provided in the embodiment of the present invention includes: a signal acquisition and processing system, a hydraulic system, a steering system and a remote monitoring system; the signal acquisition and processing system includes a digital signal processor, a pressure sensor, an angle sensor and a wireless communication module; the digital signal processor is connected to the pressure sensor, the angle sensor and the wireless communication module respectively. By setting the pressure sensor and the angle sensor, the digital signal processor can realize accurate control of the hydraulic system and the steering system, and can grasp the real-time system status. Moreover, the wireless communication module is adopted, which can realize wireless communication connection with the remote monitoring system, realize remote real-time monitoring of the hydraulic system and the steering system, and can improve the user's remote monitoring experience compared with wired communication.

[0049] Based on the above embodiment, the digital signal processor is specifically used for: Based on the processing result corresponding to the pressure information, fault detection is performed to obtain a first detection result, and the first detection result is transmitted to the remote monitoring system through the wireless communication module; Based on the processing result corresponding to the angle information, fault detection is performed to obtain a second detection result, and the second detection result is transmitted to the remote monitoring system through the wireless communication module; Based on the processing result corresponding to the pressure information and the processing result corresponding to the angle information, a joint fault detection is performed to obtain a third detection result, and the third detection result is transmitted to the remote monitoring system through the wireless communication module.

[0050] Specifically, DSP11 can also use the processing results corresponding to the pressure information to perform fault detection, obtain a first detection result, and transmit the first detection result to the remote monitoring system 4 through the wireless communication module 14, so that the user of the remote monitoring system 4 can view the first detection result in time and give timely processing suggestions when a fault occurs.

[0051] It is understandable that the first detection result may be whether there is a fault in the hydraulic system 2 and the pressure sensor 12. The fault detection process may be performed by comparing the processing result corresponding to the pressure information with the normal pressure range. The normal pressure range may be obtained by calibrating the hydraulic system 2 or by analyzing the historical data of the hydraulic system 2. If the processing result corresponding to the pressure information is within the normal pressure range, it is determined that both the hydraulic system 2 and the pressure sensor 12 are fault-free. Otherwise, if the processing result corresponding to the pressure information is not 0 and is stably outside the normal pressure range, it is determined that the hydraulic system 2 is fault-free and the pressure sensor 12 is faulty.

[0052] DSP11 can also use the processing result corresponding to the angle information to perform fault detection, obtain a second detection result, and transmit the second detection result to the remote monitoring system 4 through the wireless communication module 14, so that the user of the remote monitoring system 4 can view the second detection result in time and give treatment suggestions in time when there is a fault. If the processing result corresponding to the angle information is within the normal angle range, it is determined that the steering system 3 and the angle sensor 13 are both fault-free. Otherwise, if the processing result corresponding to the angle information is not 0 and is stably outside the normal angle range, it is determined that the steering system 3 is fault-free and the angle sensor 13 is faulty.

[0053] The above fault detection process may also introduce a pattern recognition algorithm or a machine learning algorithm (such as a decision tree, a support vector machine, etc.), and DSP11 may learn from historical data to identify whether a fault exists.

[0054] In addition, DSP11 can also use the processing results corresponding to the pressure information and the angle information to perform multivariate analysis on the processing results corresponding to the pressure information and the angle information through data fusion algorithms such as Kalman filtering and Bayesian inference, to achieve joint fault detection, obtain a third detection result, and transmit the third detection result to the remote monitoring system 4 through the wireless communication module 14, so that users of the remote monitoring system 4 can view the third detection result in time, thereby improving the accuracy of fault detection.

[0055] When the DSP 11 detects a fault in the hydraulic system 2 or the steering system 3, it takes measures to restore or downgrade the operation. For example, it can automatically adjust system parameters (such as reducing pressure or adjusting steering angle) to ensure that the system continues to operate as much as possible.

[0056] DSP11 can also record the occurrence time, type and processing results of each fault for subsequent analysis and optimization, facilitating subsequent fault prediction and preventive maintenance.

[0057] Based on the above embodiment, the digital signal processor is further used for: When at least one of the first detection result, the second detection result, and the third detection result indicates that a fault exists, a real-time alarm is issued.

[0058] Specifically, when the DSP 11 detects a fault, a real-time alarm may be triggered, which may include a local alarm and a remote notification, wherein the local alarm may include triggering a buzzer to sound or displaying a warning message through a display interface, etc. The remote notification may send the fault information to the remote monitoring system 4 through the wireless communication module 14 for real-time feedback.

[0059] Based on the above embodiment, the pressure sensor and the angle sensor are both redundantly configured; The digital signal processor is also used for: If it is determined that there is a failed sensor, the redundant sensor corresponding to the failed sensor is switched to operate.

[0060] Specifically, the DSP 11 can be designed with a fault-tolerant mechanism, and the pressure sensor 12 and the angle sensor 13 are both redundantly set, that is, multiple pressure sensors 12 and angle sensors 13 can be set at the same location. When the DSP 11 detects a fault, it takes measures to recover or downgrade the operation. For example, it can be determined that there is a failed sensor, and the failed sensor can be switched to a redundant sensor to ensure that the system continues to operate as much as possible.

[0061] Based on the above embodiment, the wireless communication module includes a wifi module or a LoRa module.

[0062] Specifically, in the embodiment of the present invention, a suitable wireless communication module, such as a Wi-Fi module or a LoRa module, can be selected according to the application scenario. The Wi-Fi module is a wireless communication module for a local area network, which is suitable for high-bandwidth, short-distance communication scenarios. The LoRa module is a wireless communication module for a low-power wide area network, which is suitable for low-power, long-distance communication, especially in the field of remote monitoring, to ensure reliable data transmission and remote monitoring.

[0063] When selecting a wireless communication module, you need to consider factors such as communication distance, power consumption, data rate, and available frequency band. When integrating a Wi-Fi module or a LoRa module into a system, you need to consider hardware connection and antenna design, and write a driver to achieve reliable data transmission, thereby achieving real-time monitoring and data cloud storage. The data transmission of the Wi-Fi module or the LoRa module requires the use of specific protocols and data packet formats to ensure data integrity and security.

[0064] Based on the above embodiment, the digital signal processor is further used for: Receiving system data of the hydraulic system and the steering system, and transmitting the system data to the remote monitoring system through the wireless communication module; The remote monitoring system is configured with a user interaction interface; The user interaction interface is configured with a graphical dashboard, and the graphical dashboard is used to graphically display the processing results; The user interaction interface is also used to receive user configuration information and access requests, and display the system data to the user.

[0065] Specifically, the DSP 11 may also receive system data of the hydraulic system 2 and the steering system 3 , and transmit the system data to the remote monitoring system 4 via the wireless communication module 14 .

[0066] The user can adjust the operating parameters of the hydraulic system 2 and the steering system 3 through the remote monitoring system 4. This remote control function helps to respond to the needs under different driving conditions in real time and improve the driving experience and safety.

[0067] The remote monitoring system 4 is configured with a user interaction interface, through which the user can easily view real-time system data.

[0068] The user interface is equipped with a graphical dashboard, which is used to graphically display the processing results. The user can monitor the status of the hydraulic system 2 and the steering system 3 in real time through the graphical dashboard, including data such as pressure, angle, current, etc. The visual presentation of these data helps the user to quickly understand the system performance.

[0069] The user interaction interface may also receive configuration information from the user, which may include an alarm threshold value so that the remote monitoring system 4 provides a real-time alarm function.

[0070] The user interface can also receive user access requests and display system data to users to support users in accessing real-time data and remotely controlling hydraulic and steering systems to ensure the efficiency and safety of the system.

[0071] Based on the above embodiment, the remote monitoring system includes an authentication module; The authentication module is used to authenticate and authorize the user.

[0072] Specifically, the remote monitoring system may also include an authentication module to authenticate and authorize users to ensure that only legitimate users can access the remote monitoring system and further access system data of the hydraulic system and the steering system.

[0073] The authentication module can include the use of username and password, two-factor authentication, biometric identification and other methods to ensure the user's identity is legitimate, which can not only protect the security of data, but also track and audit user activities to identify potential threats.

[0074] Based on the above embodiment, the pressure sensor and the angle sensor may be configured with one of an analog interface, a digital interface and a wireless interface.

[0075] Specifically, if the outputs of the pressure sensor and the angle sensor are both analog signals (such as voltage or current changes), the pressure sensor and the angle sensor can be connected to DSP11 through an analog interface (such as I2C, SPI), and DSP11 needs to perform analog-to-digital conversion on the received analog signal through ADC.

[0076] If the outputs of the pressure sensor and the angle sensor are both digital signals (for example, obtained through I2C, SPI, or UART protocol conversion), the pressure sensor and the angle sensor can be directly connected to the DSP through a digital interface. Compared with the analog interface, the digital interface can have higher anti-interference ability and can simplify the data acquisition and transmission process.

[0077] If the pressure sensor and the angle sensor can support wireless data transmission (such as Wi-Fi, ZigBee, LoRa, etc.), the pressure sensor and the angle sensor can be connected to the DSP11 through a wireless interface. The wireless interface can reduce wiring complexity and is particularly suitable for systems that require flexible layout.

[0078] Based on the above embodiment, it also includes a data encryption module and / or a data backup module; The data encryption module is used to encrypt system data; The data backup module is used to regularly back up the system data.

[0079] Specifically, for the electric hydraulic power steering system, security is an important aspect of the transmission and access of system data. System data needs to be encrypted through a data encryption module to protect the confidentiality and integrity of system data and prevent unauthorized access.

[0080] The data encryption module can use a powerful encryption algorithm, such as the Advanced Encryption Standard (AES), to protect system data during transmission, thereby reducing the risk of system data leakage. At the same time, when system data is stored locally or in the cloud, it should also be encrypted using an encryption algorithm to ensure the confidentiality of the system data. Only authorized users or devices can decrypt and access the data.

[0081] Moreover, the system data can be backed up regularly through the data backup module. By backing up the system data regularly, it can be ensured that the system data can be restored when it is damaged or lost. At the same time, data redundancy also helps to improve the stability of the system because it can prevent a single point of failure from affecting the entire system.

[0082] In summary, the electric hydraulic power steering system provided in the embodiment of the present invention realizes real-time acquisition and processing of sensor data by selecting an applicable DSP. DSP has high-performance computing power and low power consumption characteristics, and can meet the real-time data processing requirements of the system. By integrating key sensors such as pressure sensors and angle sensors, real-time monitoring and control of the hydraulic system and steering system are realized. These sensors provide key parameter data, such as pressure and angle information, for system performance evaluation and fault detection. Wireless communication technologies, such as Wi-Fi or LoRa, are used to achieve remote transmission and monitoring of data. This allows users to access system data anytime and anywhere, perform remote control and real-time alarm processing. Through the remote monitoring system, a user interaction interface and functions are provided to support real-time data access, remote control and fault diagnosis. The performance, reliability and safety of the system have been greatly improved, which helps to improve driving safety, extend battery life, reduce energy consumption, meet the automotive industry's needs for efficiency, intelligence and safety, and promote the progress and development of automotive technology.

[0083] like Figure 2 As shown, based on the above embodiments, a vehicle 21 is further provided in an embodiment of the present invention, including the electric hydraulic power steering system 22 provided in the above embodiments.

[0084] Through the description of the above implementation methods, those skilled in the art can clearly understand that each implementation method can be implemented by means of software plus a necessary general hardware platform, and of course, can also be implemented by hardware. Based on this understanding, the above technical solution is essentially or the part that contributes to the relevant technology can be embodied in the form of a software product, and the computer software product can be stored in a computer-readable storage medium, such as ROM / RAM, a disk, an optical disk, etc., including a number of instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) to execute the methods described in each embodiment or some parts of the embodiment.

[0085] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. An electric hydraulic power steering system, characterized in that: include: Signal acquisition and processing system, hydraulic system, steering system and remote monitoring system; The signal acquisition and processing system comprises a digital signal processor, a pressure sensor, an angle sensor and a wireless communication module; the digital signal processor is connected to the pressure sensor, the angle sensor and the wireless communication module respectively; The pressure sensor is installed at a key position of the hydraulic system and is used to monitor the pressure information of the hydraulic system in real time; The angle sensor is installed at a key position of the steering system and is used to monitor the angle information of the steering system in real time; The wireless communication module is used to establish a communication connection between the digital signal processor and the remote monitoring system; The digital signal processor is used to receive the pressure information and the angle information, perform digital signal processing on the pressure information and the angle information, and analyze and control the hydraulic system and the steering system based on the processing results.

2. The electric hydraulic power steering system according to claim 1, characterized in that: The digital signal processor is specifically used for: Based on the processing result corresponding to the pressure information, fault detection is performed to obtain a first detection result, and the first detection result is transmitted to the remote monitoring system through the wireless communication module; Based on the processing result corresponding to the angle information, fault detection is performed to obtain a second detection result, and the second detection result is transmitted to the remote monitoring system through the wireless communication module; Based on the processing result corresponding to the pressure information and the processing result corresponding to the angle information, a joint fault detection is performed to obtain a third detection result, and the third detection result is transmitted to the remote monitoring system through the wireless communication module.

3. The electric hydraulic power steering system according to claim 2, characterized in that: The digital signal processor is also used for: When at least one of the first detection result, the second detection result, and the third detection result indicates that a fault exists, a real-time alarm is issued.

4. The electric hydraulic power steering system according to claim 1, characterized in that: The pressure sensor and the angle sensor are both redundantly arranged; The digital signal processor is also used for: If it is determined that there is a failed sensor, the redundant sensor corresponding to the failed sensor is switched to operate.

5. The electric hydraulic power steering system according to claim 1, characterized in that: The wireless communication module includes a wifi module or a LoRa module.

6. The electric hydraulic power steering system according to claim 1, characterized in that: The digital signal processor is also used for: Receiving system data of the hydraulic system and the steering system, and transmitting the system data to the remote monitoring system through the wireless communication module; The remote monitoring system is configured with a user interaction interface; The user interaction interface is configured with a graphical dashboard, and the graphical dashboard is used to graphically display the processing results; The user interaction interface is also used to receive user configuration information and access requests, and display the system data to the user.

7. The electric hydraulic power steering system according to claim 6, characterized in that: The remote monitoring system includes an authentication module; The authentication module is used to authenticate and authorize the user.

8. The electric hydraulic power steering system according to claim 1, characterized in that: The pressure sensor and the angle sensor may be configured with one of an analog interface, a digital interface, and a wireless interface.

9. The electric hydraulic power steering system according to any one of claims 1 to 7, characterized in that: Also includes a data encryption module and / or a data backup module; The data encryption module is used to encrypt system data; The data backup module is used to regularly back up the system data.

10. A vehicle, characterized in that: Comprising the electric hydraulic power steering system as claimed in any one of claims 1-9.

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