Active self-adaptive intelligent electric control suspension system based on passenger car platform

Abstract

The invention discloses an active self-adaptive intelligent electric control suspension system based on a passenger car platform, which belongs to the field of new energy passenger cars and comprises an outside camera sensor, an acceleration sensor, an angle sensor, an ECU (electronic control unit) control module, an electronic throttle control valve, a whole car instrument, an electromagnetic shock absorber and an air spring. The outside camera sensor, the acceleration sensor and the angle sensor are in communication connection with the input end of the ECU control module, the output end of the ECU control module is in communication connection with the electronic throttle control valve, and the electronic throttle control valve is connected with the air spring. The output end of the ECU control module is connected with the electromagnetic shock absorber; the output end of the ECU control module is connected with a whole vehicle instrument. The system acts in advance to cope with small vibration of the road surface, the acceleration generated by the vibration of the road surface is fully resolved, and the comfort of the whole vehicle is improved. The inflation rate of each air bag is accurately adjusted, the stability of the posture of the vehicle body in the suspension height adjusting process is controlled, the rollover risk is reduced or relieved, and riding is comfortable.

Description

Technical Field

[0001] The present invention relates to the field of new energy buses, and in particular to an active adaptive intelligent electronically controlled suspension system based on a bus platform. Background Art

[0002] At present, low-carbon, comfortable and safe travel in cities has become the current development trend. New energy buses are an important choice. New energy buses perform well in environmental protection. They use non-traditional automotive fuels, such as pure electric and hybrid, which significantly reduce exhaust emissions, help improve air quality and reduce environmental pollution. Compared with traditional fuel buses, new energy buses are more economical in energy consumption. For example, the energy consumption of electric vehicles is much lower than that of traditional vehicles. In terms of operating costs, new energy buses also have significant advantages. With the advancement of technology and the reduction of costs, the market competitiveness of new energy buses continues to improve. With the global emphasis on environmental protection and sustainable development, the new energy bus market has ushered in rapid development. Prices have gradually decreased, further enhancing market competitiveness.

[0003] The existing electronically controlled suspension system of buses cannot be adjusted in real time according to road conditions, which easily causes bumps, etc., affecting the comfort and safety of the bus ride. Summary of the invention

[0004] With regard to the above-mentioned problems existing in the prior art, the purpose of the present invention is to provide an active adaptive intelligent electronically controlled suspension system based on a bus platform to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] Active adaptive intelligent electronically controlled suspension system based on bus platform, including external camera sensor, acceleration sensor, angle sensor, ECU control module, electronic throttle control valve, vehicle instrument, electromagnetic shock absorber and air spring;

[0007] The external camera sensor is connected to the input terminal of the ECU control module for communication, and the external camera sensor is used to collect road spectrum information;

[0008] The acceleration sensor is connected to the input terminal of the ECU control module for communication, and the acceleration sensor is used to collect vibration accelerator information of the suspension system;

[0009] The angle sensor is connected to the input terminal of the ECU control module for communication, and the angle sensor is used to collect suspension bounce travel information;

[0010] The output end of the ECU control module is connected to the electronic throttle control valve for communication, and the electronic throttle control valve is connected to the air spring for communication; the electronic throttle control valve is used to control the charging and discharging of the air spring;

[0011] The output end of the ECU control module is connected to the electromagnetic shock absorber for communication; the electromagnetic shock absorber is used to stabilize the vehicle body posture;

[0012] The output end of the ECU control module is connected to the vehicle instrument for communication; the vehicle instrument is used to display the status.

[0013] As a further solution of the present invention: a sensor input module is provided inside the ECU control module; the ECU control module is communicatively connected with the external camera sensor, acceleration sensor, and angle sensor through the sensor input module; the sensor input module is used to receive data from the external camera sensor, acceleration sensor, and angle sensor.

[0014] As a further solution of the present invention: an actuator output module is provided inside the ECU control module; the ECU control module is communicated with the electronic throttle control valve and the electromagnetic shock absorber through the actuator output module; the actuator output module is used to control the signals of the electronic throttle control valve and the electromagnetic shock absorber.

[0015] As a further solution of the present invention: an indication output module is provided inside the ECU control module, and the ECU control module is communicatively connected with the vehicle instrument through the indication output module.

[0016] As a further solution of the present invention: the ECU control module is internally provided with a microcontroller, the microcontroller includes a central processing unit and a memory; the central processing unit is used to execute control logic and algorithms; the memory includes flash memory and RAM; the flash memory is used for program storage, and the RAM is used for real-time data processing.

[0017] As a further solution of the present invention: the ECU control module has an internal regulating control module, which is communicatively connected with the actuator output module; the regulating control module is used to output control signals of the electronic throttle control valve and the electromagnetic shock absorber.

[0018] As a further solution of the present invention: a power management module is provided inside the ECU control module, and the power management module is electrically connected to the automobile power system through a power interface.

[0019] As a further solution of the present invention: the power management module includes a power regulator and a protection circuit module.

[0020] As a further solution of the present invention: a security module is provided inside the ECU control module, and the security module includes a security monitoring module and an encryption module.

[0021] As a further solution of the present invention: the vehicle instrument includes an alarm unit.

[0022] Compared with the prior art, the present invention has the following beneficial effects:

[0023] The present invention collects road spectrum information through an external camera sensor, collects vibration accelerator information transmitted to the suspension system by the road surface through an acceleration sensor, collects the bounce stroke information transmitted to the suspension by the road surface through an angle sensor, transmits the information to the ECU control module for calculation and outputs an electrical signal to adjust the damping of the magnetorheological fluid shock absorber, and also controls the opening and closing of the electronic throttle control valve to adjust the charging and discharging of the air spring. Through small and rapid pre-judgment and adjustment, it acts in advance to cope with small vibrations of the road surface, fully resolves the acceleration generated by the road surface vibration, eliminates the vibration acceleration from the vibration source, and improves the comfort of the entire vehicle.

[0024] When the vehicle passes through a bridge, a pothole, or a bad road, where the vehicle's passability is difficult to meet the requirements, the camera sensor outside the vehicle will transmit the road spectrum information to the ECU control module, which will calculate and output an electrical signal to control the opening and closing of the electronic throttle control valve to adjust the rapid inflation of the air spring, and at the same time send an alarm signal to the vehicle instrument. During the adjustment process, the angle sensor will transmit the suspension travel change information in real time, accurately adjust the inflation rate of each airbag, and control the stability of the vehicle body posture during the suspension height adjustment process.

[0025] When the vehicle is driven violently or the active or passive collision causes the vehicle posture to be skewed and there is a risk of rollover, the angle sensors distributed on the left and right air springs will collect the abnormal sound changes of the air spring height value and transmit it to the ECU control module for calculation and then output electrical signals to control the electronic throttle control valve to quickly inflate the compressed air spring and quickly deflate the stretched air spring. At the same time, the electromagnetic shock absorber will quickly increase the compression damping force of the compressed electromagnetic shock absorber and the stretching damping force of the stretched electromagnetic shock absorber according to the electrical signal output by the ECU control module, stabilize the body posture, and reduce or eliminate the risk of rollover. Considering that city buses have a standing area, for standing passengers, the stability of the body posture during vehicle operation is also of great significance, which can largely ensure the safety and comfort of standing passengers. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 The invention discloses the principle framework of the active adaptive intelligent electronically controlled suspension system based on the bus platform in the embodiment. DETAILED DESCRIPTION

[0027] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention; it is obvious that the described embodiments are only 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.

[0028] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "connected", and "connected" should be understood in a broad sense; for example, it can be a fixed connection, a detachable connection, or an integral connection, a mechanical connection, or an electrical connection, a direct connection, or an indirect connection through an intermediate medium, or the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0029] See also Figure 1 , an active adaptive intelligent electronically controlled suspension system based on a bus platform, including an external camera sensor, an acceleration sensor, an angle sensor, an ECU control module, an electronic throttle control valve, a vehicle instrument, an electromagnetic shock absorber and an air spring;

[0030] The external camera sensor is connected to the input terminal of the ECU control module for communication, and the external camera sensor is used to collect road spectrum information;

[0031] The acceleration sensor is connected to the input terminal of the ECU control module for communication, and the acceleration sensor is used to collect vibration accelerator information of the suspension system;

[0032] The angle sensor is connected to the input end of the ECU control module and is used to collect suspension bounce travel information. When the vehicle passes through bridges, potholes, and bad roads, where the vehicle's passability is difficult to meet the requirements, the camera sensor outside the vehicle will transmit the road spectrum information to the ECU control module, which will calculate and output an electrical signal to control the opening and closing of the electronic throttle control valve to adjust the rapid inflation of the air spring, and at the same time send an alarm signal to the vehicle instrument. During the adjustment process, the angle sensor will transmit the suspension travel change information in real time, accurately adjust the inflation rate of each airbag, and control the stability of the vehicle body posture during the suspension height adjustment process.

[0033] The external camera sensor, acceleration sensor, and angle sensor respectively transmit the collected road spectrum information, suspension system vibration accelerator information, and suspension bounce travel information to the ECU control module to facilitate subsequent data processing, ensure safety, and facilitate subsequent adjustment of the device. Through small and rapid pre-judgment adjustments, it can act in advance to respond to small vibrations in the road surface, fully resolve the acceleration generated by road vibration, eliminate vibration acceleration from the vibration source, and improve the comfort of the entire vehicle.

[0034] The output end of the ECU control module is connected to the electronic throttle control valve for communication, and the electronic throttle control valve is connected to the air spring for communication; after calculation, the ECU control module outputs an electrical signal to control the opening and closing of the electronic throttle control valve to control the charging and deflating of the air spring, so as to adjust the charging and deflating of the air spring, and through small and rapid pre-judgment and adjustment, it acts in advance to cope with small vibrations in the road surface, fully resolve the acceleration generated by road vibration, eliminate vibration acceleration from the vibration source, and improve the comfort of the whole vehicle.

[0035] The output end of the ECU control module is connected to the electromagnetic shock absorber for communication; the ECU control module calculates and outputs an electrical signal to adjust the damping of the electromagnetic shock absorber; when the vehicle is driven violently or the active or passive collision causes the vehicle posture to be skewed and there is a risk of rollover, the angle sensors distributed on the left and right air springs will collect the abnormal sound changes of the air spring height value and transmit it to the ECU control module for calculation and output electrical signals to control the electronic throttle control valve to quickly inflate the compressed air spring and quickly deflate the stretched air spring. At the same time, the electromagnetic shock absorber will quickly increase the compression damping force of the compressed electromagnetic shock absorber and the stretching damping force of the stretched electromagnetic shock absorber according to the electrical signal output by the ECU control module, stabilize the body posture, and reduce or eliminate the risk of rollover. Considering that urban buses have a standing area, the stability of the body posture during vehicle operation is also of great significance to standing passengers, which can largely ensure the safety and comfort of standing passengers.

[0036] The output end of the ECU control module is connected to the vehicle instrument; the vehicle instrument is used to display various states and send out alarm prompt signals.

[0037] The ECU control module is internally provided with a sensor input module; the ECU control module is connected to the vehicle exterior camera sensor, acceleration sensor, and angle sensor through the sensor input module; the sensor input module is used to receive data from the vehicle exterior camera sensor, acceleration sensor, and angle sensor.

[0038] The ECU control module is internally provided with an actuator output module; the ECU control module is connected to the electronic throttle control valve and the electromagnetic shock absorber through the actuator output module; the actuator output module is used to control the signals of the electronic throttle control valve and the electromagnetic shock absorber.

[0039] The ECU control module is internally provided with an indication output module, and the ECU control module is connected to the vehicle instrument through the indication output module. The indication output module is used to control the indicator lights and other information on the vehicle instrument panel, such as the fault light, the engine status light, etc.

[0040] The ECU control module is internally provided with a microcontroller, which includes a central processing unit and a memory; the central processing unit is used to execute control logic and algorithms; the memory includes flash memory and RAM; the flash memory is used for program storage, and the RAM is used for real-time data processing.

[0041] The ECU control module has an internal regulating control module, which is in communication connection with the actuator output module; the regulating control module is used to output control signals of the electronic throttle control valve and the electromagnetic shock absorber.

[0042] The ECU control module is internally provided with a power management module, and the power management module is electrically connected to the automobile power system through a power interface; the power interface is used to connect to the automobile power system to supply power to the ECU.

[0043] The power management module includes a power regulator and a protection circuit module; the power regulator is used to ensure that the ECU obtains a stable power supply. The protection circuit module is used to protect against overcurrent, overvoltage, etc.

[0044] The ECU control module is internally provided with a safety module, which includes a safety monitoring module and an encryption module. The safety monitoring module monitors whether the system is in a safe state to prevent potential failures or safety hazards. The encryption module protects the security of communications and data in certain high-security applications.

[0045] The vehicle instrument panel includes an alarm unit, which is used for giving an alarm.

[0046] The entire process does not require any buttons or manual operation, and is completed intelligently. It aims to achieve an electronic intelligent suspension system that can achieve active control to improve the comfort of the entire vehicle, as well as performance and driving safety.

[0047] The working principle of the present invention is: the present invention realizes active adaptive adjustment of the suspension system, makes the ride more comfortable and safer, and improves the passing performance of the whole vehicle.

[0048] (1) Comfort: The camera sensor outside the vehicle collects road information, the acceleration sensor collects the vibration accelerator information transmitted to the suspension system by the road surface, and the angle sensor collects the bounce stroke information transmitted to the suspension by the road surface. The information is transmitted to the ECU control module for calculation and then outputs an electrical signal to adjust the damping of the magnetorheological fluid shock absorber. At the same time, it also controls the opening and closing of the electronic throttle control valve to adjust the inflation and deflation of the air spring. Through small and rapid pre-judgment adjustments, it takes action in advance to respond to small vibrations in the road surface, fully resolves the acceleration generated by road vibration, eliminates vibration acceleration from the vibration source, and improves the comfort of the entire vehicle.

[0049] (2) Passability: When the vehicle passes through a bridge, a pothole, or a bad road, where the passability is difficult to meet the requirements, the camera sensor outside the vehicle will transmit the road spectrum information to the ECU control module, which will then calculate and output an electrical signal to control the opening and closing of the electronic throttle control valve to adjust the rapid inflation of the air spring, and at the same time send an alarm signal to the vehicle instrument. During the adjustment process, the angle sensor will transmit the suspension travel change information in real time, accurately adjust the inflation rate of each airbag, and control the stability of the vehicle body posture during the suspension height adjustment process.

[0050] (3) Safety: When the vehicle is driven violently or due to active or passive collision, causing the vehicle posture to tilt and the risk of rollover, the angle sensors distributed on the left and right air springs will collect the abnormal sound changes in the air spring height value and transmit it to the ECU control module for calculation and then output electrical signals to control the electronic throttle control valve to quickly inflate the compressed air spring and quickly deflate the stretched air spring. At the same time, the electromagnetic shock absorber will quickly increase the compression damping force of the compressed electromagnetic shock absorber and the stretching damping force of the stretched electromagnetic shock absorber according to the electrical signals output by the ECU control module, stabilize the vehicle posture, and reduce or eliminate the risk of rollover. Considering that city buses have a standing area, the stability of the vehicle posture during vehicle operation is also of great significance to standing passengers, which can largely ensure the safety and comfort of standing passengers.

[0051] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be considered exemplary and non-restrictive from any point of view. The scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention, and any reference numerals in the claims should not be considered as limiting the claims involved.

[0052] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. Active adaptive intelligent electronically controlled suspension system based on bus platform, characterized by: Including external camera sensor, acceleration sensor, angle sensor, ECU control module, electronic throttle control valve, vehicle instrument, electromagnetic shock absorber and air spring; The external camera sensor is connected to the input terminal of the ECU control module for communication, and the external camera sensor is used to collect road spectrum information; The acceleration sensor is connected to the input terminal of the ECU control module for communication, and the acceleration sensor is used to collect vibration accelerator information of the suspension system; The angle sensor is connected to the input terminal of the ECU control module for communication, and the angle sensor is used to collect suspension bounce travel information; The output end of the ECU control module is connected to the electronic throttle control valve for communication, and the electronic throttle control valve is connected to the air spring for communication; the electronic throttle control valve is used to control the charging and discharging of the air spring; The output end of the ECU control module is connected to the electromagnetic shock absorber for communication; the electromagnetic shock absorber is used to stabilize the vehicle body posture; The output end of the ECU control module is connected to the vehicle instrument for communication; The vehicle instrument is used to display the status.

2. The active adaptive intelligent electronically controlled suspension system based on a bus platform according to claim 1 is characterized in that: The ECU control module is internally provided with a sensor input module; the ECU control module is connected to the vehicle exterior camera sensor, acceleration sensor, and angle sensor through the sensor input module; the sensor input module is used to receive data from the vehicle exterior camera sensor, acceleration sensor, and angle sensor.

3. The active adaptive intelligent electronically controlled suspension system based on a bus platform according to claim 1 is characterized in that: The ECU control module is internally provided with an actuator output module; the ECU control module is connected to the electronic throttle control valve and the electromagnetic shock absorber through the actuator output module; the actuator output module is used to control the signals of the electronic throttle control valve and the electromagnetic shock absorber.

4. The active adaptive intelligent electronically controlled suspension system based on a bus platform according to claim 1 is characterized in that: The ECU control module is internally provided with an indication output module, and the ECU control module is communicatively connected with the vehicle instrument through the indication output module.

5. The active adaptive intelligent electronically controlled suspension system based on a bus platform according to claim 1 is characterized in that: The ECU control module is internally provided with a microcontroller, which includes a central processing unit and a memory; the central processing unit is used to execute control logic and algorithms; the memory includes flash memory and RAM; the flash memory is used for program storage, and the RAM is used for real-time data processing.

6. The active adaptive intelligent electronically controlled suspension system based on a bus platform according to claim 1 is characterized in that: The ECU control module has an internal regulating control module, which is in communication connection with the actuator output module; the regulating control module is used to output control signals of the electronic throttle control valve and the electromagnetic shock absorber.

7. The active adaptive intelligent electronically controlled suspension system based on a bus platform according to claim 1 is characterized in that: The ECU control module is internally provided with a power management module, and the power management module is electrically connected to the automobile power system through a power interface.

8. The active adaptive intelligent electronically controlled suspension system based on a bus platform according to claim 1 is characterized in that: The power management module includes a power regulator and a protection circuit module.

9. The active adaptive intelligent electronically controlled suspension system based on a bus platform according to claim 1, characterized in that: The ECU control module is internally provided with a safety module, and the safety module comprises a safety monitoring module and an encryption module.

10. The active adaptive intelligent electronically controlled suspension system based on a bus platform according to claim 1, characterized in that: The vehicle instrument comprises an alarm unit.

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