CN113353003B - Vehicle chassis integrated control system and control method - Google Patents
Vehicle chassis integrated control system and control method Download PDFInfo
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- CN113353003B CN113353003B CN202110602402.9A CN202110602402A CN113353003B CN 113353003 B CN113353003 B CN 113353003B CN 202110602402 A CN202110602402 A CN 202110602402A CN 113353003 B CN113353003 B CN 113353003B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R16/00—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for
- B60R16/02—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R16/00—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for
- B60R16/02—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements
- B60R16/023—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements for transmission of signals between vehicle parts or subsystems
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Abstract
The application discloses vehicle chassis integrated control system and control method relates to vehicle chassis control technical field, and this vehicle chassis integrated control system includes: the input unit comprises a vehicle state detection module for detecting vehicle state information, a sensor signal module for acquiring signals of each sensor, a switch signal module for acquiring signals of each switch, and a tire monitoring module for monitoring tire pressure and tire temperature; the control unit is used for operating a corresponding control strategy and outputting a corresponding control signal based on the vehicle state information, each sensor signal, each switch signal, the tire pressure and the tire temperature; and the output unit is used for receiving the control information output by the control unit and carrying out corresponding control. The vehicle chassis integrated control system and the control method can realize integrated control of the vehicle chassis, reduce the number of controllers and development and design cost, and realize the maximization of resource utilization.
Description
Technical Field
The application relates to the technical field of vehicle chassis control, in particular to a vehicle chassis integrated control system and a control method.
Background
At present, based on the development of automotive electronics technology, drivers and passengers seek higher and higher safety, comfort and science and technology for vehicles, electric control systems of automotive chassis are gradually increased, such as an air suspension control system, a tire pressure monitoring system, a light control system and the like, the systems are mutually independent, and each system corresponds to one controller.
However, because the number of systems is large, the systems are independent from one another, information is not shared, and most of the systems are information isolated islands, hardware resources are repeated, resource utilization is not maximized, centralized control and management are not facilitated, and cost reduction and benefit achievement of the whole vehicle are not facilitated; in addition, each system has a separate wire harness, which is about many, and occupies a larger vehicle arrangement space, resulting in difficulty in saving space.
Disclosure of Invention
Aiming at one of the defects in the prior art, the application aims to provide a vehicle chassis integrated control system and a control method so as to solve the problem of inconvenient centralized control and management caused by mutual independence between multiple systems of a chassis in the related technology.
The present application provides in a first aspect a vehicle chassis integrated control system comprising:
the input unit comprises a vehicle state detection module for detecting vehicle state information, a sensor signal module for acquiring signals of each sensor, a switch signal module for acquiring signals of each switch, and a tire monitoring module for monitoring tire pressure and tire temperature;
a control unit for operating a corresponding control strategy based on the vehicle state information, the sensor signals, the switch signals, the tire pressure and the tire temperature, and outputting a corresponding control signal;
and the output unit is used for receiving the control information output by the control unit and carrying out corresponding control.
In some embodiments, the control unit includes:
the signal and communication processing control module is used for collecting and filtering the vehicle state information, the sensor signals, the switch signals, the tire pressure and the tire temperature;
the light control module is used for generating a light control signal based on the filtered light-related switching signal;
the load control module is used for generating a load control signal based on the load-related sensor signal and the switch signal after filtering processing;
the air suspension control module is used for generating an air suspension control signal based on the filtered air suspension related sensor signal and the switch signal;
the tire pressure monitoring control module is used for generating a tire pressure display signal based on the tire pressure after filtering processing and generating a tire pressure alarm signal when the tire pressure exceeds a preset range;
and the tire temperature monitoring control module is used for generating a tire temperature display signal based on the tire temperature after filtering processing and generating a tire temperature alarm signal when the tire temperature is greater than a preset maximum temperature.
In some embodiments, the output unit includes:
the light driving module is used for driving the light switch according to the light control signal;
the load driving module is used for driving the load to work or not work according to the load control signal;
an air suspension drive module for adjusting the air suspension height according to an air suspension control signal;
the tire pressure monitoring and alarming module is used for sending tire pressure data to the instrument for displaying according to the tire pressure display signal and sending a tire pressure alarm according to the tire pressure alarm signal;
and the tire temperature monitoring and alarming module is used for sending the tire temperature data to the instrument for displaying according to the tire temperature display signal and sending out the tire temperature alarm according to the tire temperature alarm signal.
In some embodiments, the sensor signal module comprises:
the voltage type sensor signal submodule is used for acquiring steering axle pressure, drive axle left pressure, drive axle right pressure, servo axle pressure, lifting axle pressure and air pressure of an air storage tank;
and the inductive sensor signal submodule is used for acquiring the height of the steering axle body, the height of the drive axle left side body and the height of the drive axle right side body.
In some embodiments, the switching signal module includes:
the light switch signal sub-module is used for acquiring the state of a light control switch inside and outside the main vehicle and the state of a light control switch outside the trailer;
the load switch signal submodule is used for acquiring the states of a wheel difference control switch, a shaft difference control switch, a power take-off control switch, a fuel preheating switch, a fuel heating switch, an air inlet preheating indicating switch, a gearbox gear protection switch and a dryer switch;
and the air suspension switch signal submodule is used for acquiring the states of the height switch, the lifting bridge switch, the traction auxiliary switch and the axle load control switch.
In some embodiments, the vehicle state detection module, the sensor signal module, the switch signal module and the output unit are all in communication with the control unit through a communication unit.
In some embodiments, the communication unit includes at least one of a CAN communication module, an ethernet communication module, and a LIN communication module.
In some embodiments, the control system further comprises a base unit, the base unit comprising:
the power supply module is used for supplying power to the control unit;
and the clock module is used for generating a clock signal and sending the clock signal to the control unit.
In some embodiments, the base unit further includes an external memory module, and the external memory module is configured to store the vehicle status information, the sensor signals, the switch signals, and the tire pressure and the tire temperature received by the control unit.
The second aspect of the present application provides a control method based on the above vehicle chassis integrated control system, which includes the steps of:
the input unit acquires vehicle state information, sensor signals, switch signals, tire pressure and tire temperature in real time and sends the information to the control unit;
the control unit runs a corresponding control strategy based on the received vehicle state information, the received sensor signals, the received switch signals, the received tire pressure and the received tire temperature, and outputs a corresponding control signal to the output unit;
the output unit performs corresponding control based on the received control information.
The beneficial effect that technical scheme that this application provided brought includes:
according to the vehicle chassis integrated control system and the vehicle chassis integrated control method, the input unit comprises a vehicle state detection module for detecting vehicle state information, a sensor signal module for acquiring signals of each sensor, a switch signal module for acquiring signals of each switch, and a tire pressure and temperature monitoring module for monitoring tire pressure and tire temperature, when the control unit receives the vehicle state information, the signals of each sensor, the signals of each switch, the tire pressure and the tire temperature, a corresponding control strategy is operated, corresponding control signals are generated and sent to the output unit, and the output unit performs corresponding control according to the received control information; therefore, the integrated control of the vehicle chassis can be realized, the number of controllers and the development and design cost are reduced, and the resource utilization is maximized.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 is a first functional block diagram of a vehicle chassis integrated control system according to an embodiment of the present disclosure;
FIG. 2 is a second functional block diagram of a vehicle chassis integrated control system according to an embodiment of the present application;
fig. 3 is a flowchart of a vehicle chassis integrated control method according to an embodiment of the present application.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention. In addition, the technical features involved in the embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.
The embodiment of the application provides a vehicle chassis integrated control system and a control method, which can solve the problem of inconvenient centralized control and management caused by mutual independence between chassis multiple systems in the related technology.
As shown in fig. 1, a vehicle Chassis Integrated Control System (CICS) according to an embodiment of the present invention includes an input unit, a Control unit, and an output unit.
The input unit comprises a vehicle state detection module for detecting vehicle state information, a sensor signal module for acquiring signals of each sensor, a switch signal module for acquiring signals of each switch, and a tire monitoring module for monitoring tire pressure and tire temperature.
The tire monitoring module CAN acquire the tire pressure and the tire temperature of the vehicle through the CAN transceiver.
The control unit is used for operating a corresponding control strategy based on the vehicle state information, the sensor signals, the switch signals and the tire pressure so as to output a corresponding control signal.
The output unit is used for receiving the control information output by the control unit and carrying out corresponding control.
In the vehicle chassis integrated control system of the embodiment, the input unit comprises a vehicle state detection module for detecting vehicle state information, a sensor signal module for acquiring signals of each sensor, a switch signal module for acquiring switch signals, and a tire pressure and tire temperature monitoring module, when the control unit receives the vehicle state information, the signals of each sensor, the switch signals, the tire pressure and the tire temperature, a corresponding control signal is generated by operating a control strategy and sent to the output unit, and the output unit performs corresponding control according to the received control information; therefore, the system can realize the integrated control of the vehicle chassis, reduce the number of controllers and the development and design cost, and realize the maximization of resource utilization.
Wherein each sensor signal comprises a load-related sensor signal and an air suspension-related sensor signal; each switching signal includes a light-related switching signal, a load-related switching signal, and an air suspension-related switching signal.
As shown in fig. 2, on the basis of the above embodiment, in the present embodiment, the control unit includes a signal and communication processing control module, a light control module, a load control module, an air suspension control module, a tire pressure monitoring control module, and a tire temperature monitoring control module.
The signal and communication processing control module is used for collecting and filtering the vehicle state information, the sensor signals, the switch signals, the tire pressure and the tire temperature.
Optionally, the signal and communication processing control module may specifically collect and filter a normally closed and normally open switch signal, a high/low side switch signal, a 0-5V voltage analog signal, an inductance signal, an SPI signal, an ethernet signal, a CAN signal, a LIN signal, and the like according to a system function requirement.
The light control module is used for generating a light control signal based on the filtered light-related switching signal.
Optionally, the light control module realizes control of the inside and outside lights of the vehicle specifically according to the system function requirements, and the control strategy includes driving of the inside and outside lights and the like to realize control of the inside and outside lights.
The load control module is used for generating a load control signal based on the load-related sensor signal and the switch signal after filtering processing.
Optionally, the load control module implements load control of various electrical appliances of the vehicle according to system function requirements, and includes a wiper control strategy, a fuel preheating and heating control strategy, an axle difference and wheel difference control strategy, a power take-off control strategy, an intelligent dryer control strategy, a transmission gear protection control strategy, and the like, so as to implement wiper control, fuel preheating and heating control, axle difference and wheel difference control, power take-off control, intelligent dryer control, and transmission gear protection control.
The air suspension control module is used for generating an air suspension control signal based on the filtered air suspension related sensor signal and the filtered air suspension related sensor signal.
Optionally, the air suspension control module specifically realizes the height smooth control of the whole vehicle according to the system function requirements, and the control strategy comprises a height decision strategy, a height smooth control strategy, a traction auxiliary control strategy, an axle load distribution control strategy, a remote controller manual control strategy and the like.
The tire pressure monitoring control module is used for generating a tire pressure display signal based on the tire pressure after filtering processing, and generating a tire pressure alarm signal when the tire pressure exceeds a preset range.
Optionally, the tire pressure monitoring control module realizes real-time monitoring and alarming functions of the vehicle tire pressure according to system function requirements, and the functions comprise a high-pressure alarming strategy, an under-pressure alarming strategy and a rapid air leakage alarming strategy.
The tire temperature monitoring control module is used for generating a tire temperature display signal based on the tire temperature after filtering processing and generating a tire temperature alarm signal when the tire temperature is greater than a preset maximum temperature.
Optionally, the tire pressure monitoring control module specifically realizes the functions of monitoring the temperature of the vehicle tire in real time and alarming according to the functional requirements of the system, that is, includes a high-temperature alarm strategy.
Optionally, the control unit further includes a system configuration module, a power management module, a memory management module, and a fault diagnosis module.
The system configuration module can realize clock configuration, watchdog configuration, register configuration, task state configuration, task scheduling management and the like of the integrated control system.
The power management module can realize power monitoring and management of the integrated control system according to system function requirements, and comprises power voltage normal and abnormal monitoring strategies, whole vehicle energy consumption management strategies and the like.
The memory management module can realize memory allocation and management of the integrated control system according to system function requirements, and comprises an internal and external memory FLASH and RAM allocation strategy, an internal and external memory FLASH and RAM work dynamic monitoring management strategy and the like.
The fault diagnosis module CAN realize the diagnosis of the sensor, the onboard circuit, each driving chip and each load according to the functional requirements of the system, and comprises the diagnosis of an internal lamp, an external lamp, a height sensor, a pressure sensor, a fuel preheating relay, a regeneration electromagnetic valve, an unloading electromagnetic valve, ethernet communication, CAN communication and LIN communication of a vehicle.
In other embodiments, the control unit further includes an EOL (End of line) function module and a Boot level update module.
The EOL function module can realize the calibration functions of different vehicle types, driving forms and various configuration parameters according to the functional requirements of the system, and can realize calibration software according to a UDS protocol and an EOL calibration flow.
The Boot program updating module can realize software flashing of the integrated control system and realize program updating software according to the MCU type and the Boot flow.
On the basis of the above embodiment, in this embodiment, the output unit includes a light driving module, a load driving module, an air suspension driving module, a tire pressure monitoring alarm module, and a tire temperature monitoring alarm module.
When the control signal comprises a light control signal, the light driving module is used for driving the light switch according to the light control signal.
After receiving the light control signal, the light driving module can respectively drive a far/near light, a left/right steering light, a front/rear fog light, a position light, a reversing light and the like to realize the external light control of the vehicle.
When the control signal is a load control signal, the load driving module is used for driving the load to work or not work according to the load control signal.
And when the control signal is an air suspension control signal, the air suspension driving module is used for adjusting the height of the air suspension according to the air suspension driving signal.
When the control signal comprises a tire pressure display signal, the tire pressure monitoring and alarming module is used for sending tire pressure data to the instrument for displaying through CAN communication according to the tire pressure control signal, and when the control signal comprises a tire pressure alarming signal, the tire pressure monitoring and alarming module is also used for sending tire pressure alarming according to the tire pressure alarming signal.
When the control signal comprises a tire temperature display signal, the tire temperature monitoring and alarming module is used for sending tire temperature data to an instrument for displaying through CAN communication according to the tire temperature display signal; when the control signal also comprises a tyre temperature alarm signal, the tyre temperature monitoring alarm module is also used for giving out a tyre temperature alarm according to the tyre temperature alarm signal.
In this embodiment, the load driving module includes a relay driving submodule and an electromagnetic valve driving submodule.
The relay driving submodule is a group of processing circuits which need the relay to drive the load to work, and is used for controlling the relay to be attracted or closed after receiving the load control signal so as to drive the corresponding load to work or not work.
The relay driving submodule in the load driving module comprises a wheel difference/shaft difference driving submodule and a heating driving submodule.
And after receiving the corresponding load control signals, the wheel difference/axle difference driving sub-module respectively drives the inter-axle differential electromagnetic valve and the inter-wheel differential electromagnetic valve to realize wheel difference and axle difference control.
And after receiving the corresponding load control signal, the heating driving sub-module respectively drives the fuel preheating relay and the fuel tank heating electromagnetic valve to realize fuel preheating or heating control.
The electromagnetic valve driving submodule is a group of processing circuits for driving the load to work in a PWM mode, and controls the electromagnetic valve to drive the corresponding load to work or not work after receiving the load control signal.
The electromagnetic valve driving submodule in the load driving module comprises a power take-off driving submodule, a gearbox gear protection driving submodule and an intelligent dryer driving submodule.
And after receiving the corresponding load control signals, the power take-off driving submodule respectively drives the driving power take-off electromagnetic valve and the parking power take-off electromagnetic valve to realize driving and parking power take-off control.
After receiving corresponding load control signals, the transmission gear protection driving submodule respectively drives the high-low gear locking electromagnetic valve and the 1-gear locking electromagnet to realize high-low gear and 1-gear locking protection of the transmission.
And after receiving the corresponding load control signal, the intelligent dryer driving submodule respectively drives the regeneration electromagnetic valve and the unloading electromagnetic valve to realize regeneration and unloading control of the intelligent dryer.
Optionally, the load driving module further includes a motor driving sub-module, where the motor driving sub-module is a set of processing circuits that drive the load to operate in a PWM manner, and the motor driving sub-module may be configured to receive the load control signal and then control the motor to drive the corresponding load to operate or not operate. For example, when the load control signal is a rearview mirror adjustment or a glass adjustment, the motor driving sub-module can perform adjustment control on the rearview mirror or the glass based on the control signal.
Optionally, the air suspension driving module is a solenoid valve driving module, that is, a set of processing circuits for driving the air suspension to work through a PWM form, and after receiving the air suspension control signal, the processing circuits control the solenoid valve to adjust the height of the air suspension.
After receiving the air suspension control signal, the air suspension driving module realizes suspension height and axle load control, namely respectively drives the steering axle electromagnetic valve, the drive axle electromagnetic valve, the lifting axle electromagnetic valve and the follow-up axle electromagnetic valve so as to realize the whole vehicle height control of the air suspension.
ON the basis of the above embodiments, in the present embodiment, the vehicle state detection module is configured to detect signals of a START gear, an ON gear, an ACC gear, a vehicle speed, an engine speed, and the like of an ignition lock, so as to be used as a basis for starting, stopping, and switching the operation state of the control unit.
The sensor signal module comprises a voltage type sensor signal submodule and an inductance type sensor signal submodule.
The voltage type sensor signal submodule and the inductance type sensor signal submodule are respectively a group of sensor signal processing circuits which are responsible for corresponding types.
The voltage type sensor signal submodule is used for acquiring steering axle pressure, drive axle left pressure, drive axle right pressure, servo axle pressure, lifting axle pressure and air pressure of an air storage tank.
The voltage type sensor signal submodule is respectively connected with a steering axle pressure sensor, a drive axle left pressure sensor, a drive axle right pressure sensor, a follow-up axle pressure sensor, a lifting axle pressure sensor and a gas storage tank pressure sensor so as to acquire signals of the pressure sensors.
The inductive sensor signal submodule is used for acquiring the height of a steering axle body, the height of a drive axle left side body and the height of a drive axle right side body.
The inductive sensor signal submodule is respectively connected with the steering axle height sensor, the drive axle left height sensor and the drive axle right height sensor to acquire signals of the height sensors.
On the basis of the above embodiment, in this embodiment, the switch signal module includes a light switch signal submodule, a load switch signal submodule, and an air suspension switch signal submodule.
The light switch signal submodule is used for acquiring the states of the light control switch inside and outside the main vehicle and the light control switch outside the trailer.
The load switch signal submodule is used for acquiring states of a wheel difference control switch, a shaft difference control switch, a power take-off control switch, a fuel preheating switch, a fuel heating switch, an air inlet preheating indicating switch, a gearbox gear protection switch and a dryer switch. Optionally, the load switch signal sub-module is further configured to obtain states of the electromagnetic power main switch and the brake shoe wear switch.
The air suspension switch signal submodule is used for acquiring states of a height switch, a lifting bridge switch, a traction auxiliary switch and an axle load control switch. Optionally, the air suspension switch signal submodule can also be used for acquiring the state of a remote controller switch.
Optionally, each switch signal submodule may be selected from a normally closed and normally open switch signal submodule, a high side switch signal submodule, or a low side switch signal submodule.
The normally closed and normally open switch signal submodule is a group of normally closed and normally open switch signal processing circuits; the high-side switch signal submodule is a group of high-side signal processing circuits; the low-side switch signal submodule is a group of low-side signal processing circuits.
In this embodiment, the vehicle state detection module, the sensor signal module, the switch signal module and the output unit are all in communication with the control unit through the communication unit.
Preferably, the communication unit includes at least one of a CAN communication module, an ethernet communication module, and a LIN communication module. Each communication interface is specifically adapted and tailored to the system requirements.
In this embodiment, the communication unit is a CAN communication module, and may be a main network CAN communication or a sub-network CAN communication. The CAN communication module CAN be designed into three paths, namely CAN communication 1, CAN communication 2 and CAN communication 3, such as information CAN, power CAN and subnet transceiver CAN.
In other embodiments, when the communication unit is an Ethernet communication module, the communication unit comprises one path of 1000Base-T1 and two paths of 100Base-T1.
Optionally, when the communication unit is a LIN communication module, it is designed as two paths, namely LIN communication 1 and LIN communication 2.
Preferably, the control system further comprises a base unit, and the base unit comprises a power module and a clock module.
The power supply module is used for supplying power to the control unit. The input of the power supply module is 24V of a vehicle power supply, the power supply module has voltage stabilization and reverse resistance functions, the driving capacity is 0-2A, and the output voltage is 12V, 5V or 3.3V. Optionally, the control Unit is an MCU (micro controller Unit).
The clock module is used for generating a clock signal and sending the clock signal to the control unit. The input of the clock module CAN be selected from 16M or 4M crystal oscillators, the selection of the crystal oscillator source is determined according to the system requirements, the frequency multiplication/frequency division is carried out through a PLL (phase locked loop), an MCU (microprogrammed control unit) clock, a CAN (controller area network) clock, an AD (analog to digital) clock, a PWM (pulse width modulation) clock, an SPI (Serial Peripheral Interface) clock and the like are output, and the requirements of other Interface clocks are specifically configured according to the system requirements.
In this embodiment, the base unit further includes an external expansion storage module, and the external expansion storage module is configured to store the vehicle state information, the sensor signals, the switch signals, the tire pressure and the tire temperature received by the control unit.
The external expansion storage module comprises at least one of an external expansion FLASH module and an external expansion RAM module.
Optionally, the storage spaces of the external expansion FLASH module and the external expansion RAM module are respectively designed to be 2M, 4M and 8M. Hardware interfaces of the power supply module, the clock module, the external expansion FLASH module and the external expansion RAM module are uniformly designed according to standardization, and are specifically selected and confirmed according to system requirements.
As shown in fig. 3, the control method based on the integrated control system for vehicle chassis of the present embodiment includes the steps of:
s1, an input unit acquires vehicle state information, sensor signals, switch signals, tire pressure and tire temperature in real time and sends the information to a control unit.
And S2, the control unit operates a corresponding control strategy based on the received vehicle state information, the signals of the sensors, the signals of the switches, the tire pressure and the tire temperature so as to output a corresponding control signal to the output unit.
Optionally, the control strategies include an internal and external light control strategy, a wiper control strategy, a fuel preheating and heating control strategy, an axle difference and wheel difference control strategy, a power take-off control strategy, an intelligent dryer control strategy, a gearbox gear protection control strategy, a height decision strategy, a height smooth control strategy, a traction auxiliary control strategy, an axle load distribution control strategy, a remote controller manual control strategy and the like; optionally, the control strategy further includes a high-pressure alarm strategy, an under-pressure alarm strategy, a rapid gas leakage alarm strategy, a high-temperature alarm strategy, and the like.
And S3, the output unit performs corresponding control based on the received control information.
Further, the control unit comprises a signal and communication processing control module, a light control module, a load control module, an air suspension control module, a tire pressure monitoring control module and a tire temperature monitoring control module. Wherein each sensor signal comprises a load related sensor signal and an air suspension related sensor signal; each switching signal includes a light-related switching signal, a load-related switching signal, and an air suspension-related switching signal.
In this embodiment, the step S2 specifically includes:
and S21, the signal and communication processing control module acquires and filters the received vehicle state information, the signals of the sensors, the signals of the switches and the tire pressure.
And S22, the light control module generates a light control signal based on the filtered light-related switching signal.
And S23, the load control module generates a load control signal based on the load related sensor signal and the switch signal after filtering processing.
And S24, the air suspension control module generates an air suspension control signal based on the filtered air suspension related sensor signal and the filtered air suspension related sensor signal.
And S25, the tire pressure monitoring control module generates a tire pressure display signal based on the tire pressure after filtering processing, and generates a tire pressure alarm signal when the tire pressure exceeds a preset range.
S26, the tire temperature monitoring control module generates a tire temperature display signal based on the tire temperature after filtering processing, and generates a tire temperature alarm signal when the tire temperature is higher than a preset maximum temperature.
The control method of the embodiment is suitable for various control systems, after the control unit acquires vehicle state information, sensor signals, switch signals and tire pressure, corresponding control signals can be generated based on the information and sent to the output unit, the output unit performs corresponding chassis control according to the received control information, the maximum efficiency of hardware resources and software resources can be fully exerted, centralized control of vehicle internal and external light control, load control, air suspension control and tire pressure monitoring is achieved, the number of control units and wire harnesses is reduced, development time and test time are reduced, development design cost and labor cost are saved, in addition, the design standardization and modularization of integrated control software and hardware are achieved, and the expandability and function configurability of future systems are fully compatible and adapted.
The present invention is not limited to the above-described embodiments, and it will be apparent to those skilled in the art that various modifications and improvements can be made without departing from the principle of the present invention, and such modifications and improvements are also considered to be within the scope of the present invention.
Claims (7)
1. A vehicle chassis integrated control system, comprising:
the input unit comprises a vehicle state detection module for detecting vehicle state information, a sensor signal module for acquiring signals of each sensor, a switch signal module for acquiring signals of each switch, and a tire monitoring module for monitoring tire pressure and tire temperature;
the control unit is used for operating a corresponding control strategy and outputting a corresponding control signal based on the vehicle state information, each sensor signal, each switch signal, the tire pressure and the tire temperature;
the output unit is used for receiving the control information output by the control unit and carrying out corresponding control;
the control unit includes:
the signal and communication processing control module is used for collecting and filtering the vehicle state information, the signals of each sensor, the signals of each switch, the tire pressure and the tire temperature;
the light control module is used for generating a light control signal based on the filtered light-related switching signal;
the load control module is used for generating a load control signal based on the load-related sensor signal and the switch signal after filtering processing;
the air suspension control module is used for generating an air suspension control signal based on the filtered air suspension related sensor signal and the switching signal;
the tire pressure monitoring control module is used for generating a tire pressure display signal based on the tire pressure after filtering processing and generating a tire pressure alarm signal when the tire pressure exceeds a preset range;
the tire temperature monitoring control module is used for generating a tire temperature display signal based on the tire temperature after filtering processing and generating a tire temperature alarm signal when the tire temperature is greater than a preset maximum temperature;
the output unit includes:
the light driving module is used for driving the light switch according to the light control signal;
the load driving module is used for driving the load to work or not work according to the load control signal;
an air suspension drive module for adjusting the air suspension height according to an air suspension control signal;
the tire pressure monitoring and alarming module is used for sending tire pressure data to the instrument for displaying according to the tire pressure display signal and sending a tire pressure alarm according to the tire pressure alarm signal;
the tire temperature monitoring and alarming module is used for sending tire temperature data to an instrument for displaying according to the tire temperature display signal and sending a tire temperature alarm according to the tire temperature alarm signal;
the switching signal module includes:
the light switch signal submodule is used for acquiring the states of an internal light control switch and an external light control switch of the main vehicle and the trailer;
the load switch signal submodule is used for acquiring states of a wheel difference control switch, a shaft difference control switch, a power take-off control switch, a fuel preheating switch, a fuel heating switch, an air inlet preheating indicating switch, a gearbox gear protection switch and a dryer switch;
and the air suspension switch signal submodule is used for acquiring the states of the height switch, the lifting bridge switch, the traction auxiliary switch and the axle load control switch.
2. The vehicle chassis integrated control system of claim 1, wherein the sensor signal module comprises:
the voltage type sensor signal submodule is used for acquiring steering axle pressure, drive axle left pressure, drive axle right pressure, servo axle pressure, lifting axle pressure and air pressure of an air storage tank;
and the inductive sensor signal submodule is used for acquiring the height of a steering axle body, the height of a drive axle left side body and the height of a drive axle right side body.
3. The vehicle chassis integrated control system of claim 1, wherein: the vehicle state detection module, the sensor signal module, the switch signal module and the output unit are all communicated with the control unit through the communication unit.
4. The vehicle chassis integrated control system of claim 3, wherein: the communication unit includes at least one of a CAN communication module, an ethernet communication module, and a LIN communication module.
5. The vehicle chassis integrated control system of claim 1, wherein the control system further comprises a base unit, the base unit comprising:
the power supply module is used for supplying power to the control unit;
and the clock module is used for generating a clock signal and sending the clock signal to the control unit.
6. The vehicle chassis integrated control system of claim 5, wherein: the basic unit further comprises an external expansion storage module, and the external expansion storage module is used for storing the vehicle state information, the sensor signals, the switch signals, the tire pressure and the tire temperature received by the control unit.
7. A control method of a vehicle chassis integrated control system according to claim 1, comprising the steps of:
the input unit acquires vehicle state information, sensor signals, switch signals, tire pressure and tire temperature in real time and sends the information to the control unit;
the control unit operates a corresponding control strategy based on the received vehicle state information, the received sensor signals, the received switch signals, the received tire pressure and tire temperature, and outputs a corresponding control signal to the output unit;
and the output unit performs corresponding control based on the received control information.
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| US6499552B2 (en) * | 2001-06-01 | 2002-12-31 | Meritor Heavy Vehicle Technology, L.L.C. | Drive axle control system |
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