CN112109546A - Freight vehicle speed control system and method - Google Patents
Freight vehicle speed control system and method Download PDFInfo
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- CN112109546A CN112109546A CN202010998180.2A CN202010998180A CN112109546A CN 112109546 A CN112109546 A CN 112109546A CN 202010998180 A CN202010998180 A CN 202010998180A CN 112109546 A CN112109546 A CN 112109546A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K31/00—Vehicle fittings, acting on a single sub-unit only, for automatically controlling vehicle speed, i.e. preventing speed from exceeding an arbitrarily established velocity or maintaining speed at a particular velocity, as selected by the vehicle operator
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K31/00—Vehicle fittings, acting on a single sub-unit only, for automatically controlling vehicle speed, i.e. preventing speed from exceeding an arbitrarily established velocity or maintaining speed at a particular velocity, as selected by the vehicle operator
- B60K31/0008—Vehicle fittings, acting on a single sub-unit only, for automatically controlling vehicle speed, i.e. preventing speed from exceeding an arbitrarily established velocity or maintaining speed at a particular velocity, as selected by the vehicle operator including means for detecting potential obstacles in vehicle path
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K31/00—Vehicle fittings, acting on a single sub-unit only, for automatically controlling vehicle speed, i.e. preventing speed from exceeding an arbitrarily established velocity or maintaining speed at a particular velocity, as selected by the vehicle operator
- B60K31/18—Vehicle fittings, acting on a single sub-unit only, for automatically controlling vehicle speed, i.e. preventing speed from exceeding an arbitrarily established velocity or maintaining speed at a particular velocity, as selected by the vehicle operator including a device to audibly, visibly, or otherwise signal the existence of unusual or unintended speed to the driver of the vehicle
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K31/00—Vehicle fittings, acting on a single sub-unit only, for automatically controlling vehicle speed, i.e. preventing speed from exceeding an arbitrarily established velocity or maintaining speed at a particular velocity, as selected by the vehicle operator
- B60K31/0008—Vehicle fittings, acting on a single sub-unit only, for automatically controlling vehicle speed, i.e. preventing speed from exceeding an arbitrarily established velocity or maintaining speed at a particular velocity, as selected by the vehicle operator including means for detecting potential obstacles in vehicle path
- B60K2031/0016—Identification of obstacles; Selection of a target vehicle
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Control Of Driving Devices And Active Controlling Of Vehicle (AREA)
- Control Of Vehicle Engines Or Engines For Specific Uses (AREA)
- Controls For Constant Speed Travelling (AREA)
Abstract
The invention discloses a freight vehicle speed control system and a freight vehicle speed control method, which are characterized in that a vehicle-mounted controller, an engine power device management module connected with the vehicle-mounted controller, a rotating speed sensor, a vehicle-mounted gyroscope, a voice prompt device and a radar sensor arranged at the front end of a vehicle are used for acquiring the vehicle running speed and the vehicle running horizontal state in real time, simultaneously combining barrier information in front of the vehicle, controlling the vehicle speed by adjusting the fuel supply of an engine, ensuring that the vehicle speed is kept at the optimal economic vehicle speed to the maximum extent, reducing the use frequency and the strength of a braking device by remote fuel cut-off sliding, and further ensuring the efficiency stability of a braking system, thereby improving the running safety of the vehicle. According to the invention, the vehicle running state is obtained through the vehicle-mounted gyroscope, so that the current road gradient can be effectively judged, road auxiliary information is provided for a driver, a safe driving environment is provided for a truck, fatigue caused by long-term driving is effectively reduced, and the driving safety is improved.
Description
Technical Field
The invention relates to an intelligent control system for a freight vehicle, in particular to a system and a method for controlling the speed of the freight vehicle.
Background
With the improvement of vehicle power technology and the rapid development of expressways, the requirements on high speed, safety and economy of the freight cars are increasingly urgent, the running safety of the freight cars is seriously threatened by the problems of brake overheating, friction plate abrasion and the like caused by high-speed braking or frequent deceleration braking of the freight cars, and the existing vehicle braking system is limited by the performance of the existing vehicle braking system and is more difficult to meet the vehicle braking safety requirements. Meanwhile, the vehicle is frequently braked at a high speed state, and the economical efficiency of the vehicle is also reduced. Because the natural perception of the driver has considerable limitation, the safety of the vehicle in high-speed running is difficult to guarantee, meanwhile, the safety concern of the driver also makes the dynamic property of the freight vehicle not be fully exerted, thereby restricting the improvement of the vehicle economy.
Disclosure of Invention
The invention aims to provide a speed control system and method for a freight vehicle, which overcome the defects of the prior art.
In order to achieve the purpose, the invention adopts the following technical scheme:
a freight vehicle speed control method includes the following steps:
step 1), acquiring the running speed of a vehicle, the running road section state of the vehicle and the information of obstacles in front of the vehicle;
step 2), if the vehicle running road section state is an uphill section, controlling the vehicle by a driver; if the vehicle running section is in a downhill state and no obstacle exists in the front safety distance, reminding a driver to reduce the oil supply of the accelerator; when the vehicle is in a downhill state and no obstacle exists in the front safe distance, and the running speed of the vehicle is greater than the set safe speed per hour, the accelerator supply is controlled to be reduced, and when the vehicle is in the downhill state and the obstacle exists in the front safe distance, the engine is used for braking, and meanwhile, the driver is reminded of taking braking.
Further, the safe speed per hour of the vehicle is less than 10% -15% of the highest speed limit of the road.
A freight vehicle speed control system comprises an on-board controller, an engine power device management module, a rotating speed sensor, an on-board gyroscope, a voice prompt device and a radar sensor, wherein the engine power device management module, the rotating speed sensor, the on-board gyroscope, the voice prompt device and the radar sensor are connected with the on-board controller;
the rotating speed sensor is used for acquiring the running speed of the vehicle and transmitting the running speed of the vehicle to the vehicle-mounted controller; the vehicle-mounted gyroscope is used for acquiring a vehicle running horizontal state and transmitting the acquired vehicle running horizontal state to the vehicle-mounted controller; the radar sensor is used for acquiring the obstacle information of the front end of the vehicle and transmitting the obstacle information of the front end of the vehicle to the vehicle-mounted controller; the vehicle-mounted controller judges whether the vehicle is braked according to the running level state of the vehicle, and when the vehicle is in an uphill section, the vehicle is driven and controlled by a driver; when the vehicle is in a downhill state and no obstacle exists in the front safety distance, the voice prompt device reminds the driver to reduce the oil supply of the accelerator; when the vehicle is in a downhill state and no obstacle exists in the front safety distance, and the running speed of the vehicle is greater than the set safety speed per hour, the vehicle-mounted controller reduces the accelerator supply through the engine power device management module, and when the vehicle is in the downhill state and an obstacle exists in the front safety distance, the vehicle-mounted controller reduces the accelerator supply through the engine power device management module and simultaneously utilizes the engine to brake to remind a driver of braking.
Further, the vehicle braking system further comprises a load sensor, wherein the load sensor is used for acquiring vehicle load information and calculating the vehicle braking distance according to the vehicle load information.
Further, the revolution speed sensor acquires the running speed of the vehicle by adopting an anti-lock braking system.
Further, the load sensor comprises a front axle load sensor and a drive axle load sensor, and the average load of the vehicle is obtained through the front axle load sensor and the drive axle load sensor.
Furthermore, the vehicle-mounted controller is also connected with the vehicle-mounted navigation module and used for acquiring the current road speed limit.
Further, the safe speed per hour of the vehicle is less than 10% -15% of the highest speed limit of the road.
Further, when the vehicle runs horizontally and the gradient is in a downhill state and is less than 2 degrees, the voice prompt device is only used for reminding the driver of reducing the oil supply of the accelerator.
Further, when the gradient of the vehicle in the horizontal running state is in a downhill state and the gradient is more than or equal to 2 degrees, when the engine power device management module does not detect and then supply is reduced, the voice prompt device reminds a driver to reduce the accelerator supply and reduce the fuel supply through the engine power device management module.
Compared with the prior art, the invention has the following beneficial technical effects:
the invention relates to a freight vehicle speed control method, which can be used for autonomously controlling the vehicle running by a driver when the vehicle running road section state is an uphill section by acquiring the vehicle running speed, the vehicle running road section state and the information of an obstacle in front of the vehicle and reminding the driver to reduce the accelerator oil supply when the vehicle running road section state is a downhill section and no obstacle exists in the front safety distance so as to play a role of warning the driver, wherein when the vehicle is in the downhill section and no obstacle exists in the front safety distance and the vehicle running speed is higher than the set safety speed, the accelerator supply is reduced by forced control so as to prevent the vehicle from continuously supplying oil to cause the vehicle stalling, when the vehicle is in the downhill section and the obstacle exists in the front safety distance, the engine brake is used for reminding the driver to adopt the brake, thereby greatly improving the safety of the truck vehicle running process, effectively controlling the vehicle speed in the form of a vehicle.
The invention relates to a freight vehicle speed control system, which is characterized in that a vehicle-mounted controller, an engine power device management module connected with the vehicle-mounted controller, a rotating speed sensor, a vehicle-mounted gyroscope, a voice prompt device and a radar sensor arranged at the front end of a vehicle are used for acquiring the vehicle running speed and the vehicle running horizontal state in real time, simultaneously combining obstacle information in front of the vehicle, controlling the vehicle speed by adjusting the fuel supply of an engine, ensuring that the vehicle speed is kept at the optimal economic vehicle speed to the maximum extent, reducing the use frequency and the strength of a braking device by long-distance fuel cut-off sliding, and further ensuring the stability of the efficiency of a braking system, thereby improving the running safety of the vehicle. According to the invention, the vehicle driving state is obtained through the vehicle-mounted gyroscope, so that the current road gradient can be effectively judged, road auxiliary information is provided for a driver, meanwhile, other vehicles are monitored by using a radar, a safe driving environment is provided for a truck, and fatigue caused by long-term driving is effectively reduced, so that traffic accidents on a highway are reduced, energy lost due to improper driving is saved, and the life and property safety of people is ensured.
Drawings
Fig. 1 is a schematic diagram of a system connection structure according to an embodiment of the present invention.
Wherein, 1, radar sensor; 2. a front axle load sensor; 3. a front wheel rotational speed sensor; 4. a vehicle-mounted control module; 5. a vehicle-mounted navigation module; 6. an engine power plant management module; 7. a transaxle load sensor; 8. rear wheel speed sensor.
Detailed Description
The invention is described in further detail below with reference to the accompanying drawings:
as shown in fig. 1, a speed control system of a freight vehicle comprises an on-board controller 4, an engine power device management module 6 connected with the on-board controller 4, a rotation speed sensor, an on-board gyroscope, a voice prompt device and a radar sensor 1 installed at the front end of the vehicle;
the rotating speed sensor is used for acquiring the running speed of the vehicle and transmitting the running speed of the vehicle to the vehicle-mounted controller; the vehicle-mounted gyroscope is used for acquiring a vehicle running horizontal state and transmitting the acquired vehicle running horizontal state to the vehicle-mounted controller 4; the radar sensor 1 is used for acquiring vehicle front-end obstacle information and transmitting the vehicle front-end obstacle information to the vehicle-mounted controller; the vehicle-mounted controller judges whether the vehicle driving road section is an uphill section or a downhill section according to the vehicle driving level state, and when the vehicle is in the uphill section, the vehicle-mounted controller 4 does not intervene in vehicle control; when the vehicle is in a downhill state and no obstacle exists in the front safety distance, the voice prompt device reminds the driver to reduce the oil supply of the accelerator; when the vehicle is in a downhill state and no obstacle exists in the front safe distance, and the running speed of the vehicle is greater than the set safe speed per hour, the vehicle-mounted controller 4 reduces the accelerator supply through the engine power device management module 6, and when the vehicle is in the downhill state and an obstacle exists in the front safe distance, the vehicle-mounted controller 4 reduces the accelerator supply through the engine power device management module 6 and simultaneously utilizes the engine to brake to remind a driver of braking.
Specifically, when the vehicle runs horizontally and the gradient is in a downhill state (namely the depression angle of the vehicle is greater than zero degree), and the gradient is less than 2 degrees, the voice prompt device is only used for reminding a driver to reduce the oil supply of the accelerator; when the gradient of the vehicle in the horizontal running state is in a downhill state and the gradient is more than or equal to 2 degrees, when the engine power device management module 6 does not detect the reduction of the supply, the voice prompt device reminds a driver to reduce the accelerator supply and automatically reduce the fuel supply through the engine power device management module 6, so that the driving safety is ensured.
The vehicle braking system further comprises a load sensor, wherein the load sensor is used for acquiring vehicle load information, providing the vehicle load information for the vehicle and calculating the vehicle braking distance according to the vehicle load information. The load sensor comprises a front axle load sensor 2 and a drive axle load sensor 7, and the average load of the vehicle is obtained through the front axle load sensor 2 and the drive axle load sensor 7. The revolution speed sensor is used for acquiring the running speed of the vehicle, specifically, an anti-lock braking system (ABS) is used for acquiring the vehicle speed, and meanwhile, the braking capacity information of the vehicle is acquired.
The engine power device management module 6 is used for collecting the torque and oil consumption information of the vehicle engine, and the engine power device management module 6 adopts an engine power device management system EPM. The radar sensor 1 is used for acquiring vehicle front end obstacle information, specifically, the distance between an obstacle in front of a running vehicle or other vehicles and the vehicle. The vehicle-mounted controller 4 is also connected with the vehicle-mounted navigation module 5 and is used for acquiring the current road speed limit, and the vehicle safety speed per hour is less than 10% -15% of the highest road speed limit.
The method comprises the steps that a driver plans a driving route according to a vehicle-mounted navigation module 5, the state of a vehicle driving road section is obtained through a vehicle-mounted gyroscope during vehicle driving, the information of a vehicle front-end obstacle is obtained through a radar sensor, the fuel supply of a vehicle is regulated according to the state of the vehicle driving road section, the vehicle driving speed and the information of the vehicle front-end obstacle, the vehicle speed is controlled by regulating the fuel supply of an engine, the fuel input utilization efficiency of the vehicle is improved, the use frequency and the strength of a braking device are reduced through long-distance fuel cut-off sliding, and the economical efficiency and the safety of vehicle operation which cannot be achieved by the driver can. The rotation speed sensors include a front wheel rotation speed sensor 3 and a rear wheel rotation speed sensor 8.
When a driver starts a power switch and a vehicle power supply is switched on, the vehicle-mounted control module 4 starts to work, and after vehicle load information is obtained through a front axle load sensor and a drive axle load sensor 7 which are arranged on a front axle and a drive axle of the vehicle, engine torque and oil consumption information of the vehicle are obtained through combining an engine and a power device management system (EPM)6, engine oil consumption characteristic parameters are obtained, and the optimal economic vehicle speed of the vehicle running under the load is obtained; and the optimal economic speed of the vehicle is prompted to the driver through a vehicle-mounted display module or a voice prompt system. During the running of the vehicle, the vehicle-mounted control module 4 acquires the ramp and turning information of a form route according to the analysis of the digital map and the road condition information provided by the vehicle-mounted navigation system 5, the ramp and turning information of the road is provided by the vehicle-mounted navigation system, the fuel supply of an engine is adjusted by the engine and power device management system (EPM)6, the vehicle speed is controlled in a proper range, the vehicle speed is kept at the optimal economic vehicle speed to the maximum extent, the frequent use of an accelerator and a brake is reduced, and the running economy of the vehicle is improved. Meanwhile, when the vehicle runs, the vehicle-mounted control module 4 determines the maximum braking distance of the vehicle at the current speed through the front wheel rotating speed sensor 3 and the rear wheel rotating speed sensor 8, recognizes the front road condition by using the long-distance radar sensor (installed on a front bumper) 1, recognizes the braking requirement outside the view of a driver, adjusts the fuel supply of an engine to reduce the speed, and reduces the working strength of a braking device by using fuel-cut sliding, so that the stability of the efficiency of a braking system is ensured, and the running safety of the vehicle is improved. According to the invention, the vehicle driving state is obtained through the vehicle-mounted gyroscope, so that the current road gradient can be effectively judged, road auxiliary information is provided for a driver, meanwhile, other vehicles are monitored by using a radar, a safe driving environment is provided for a truck, and fatigue caused by long-term driving is effectively reduced, so that traffic accidents on a highway are reduced, energy lost due to improper driving is saved, and the life and property safety of people is ensured.
Claims (10)
1. A method for controlling the speed of a freight vehicle, comprising the steps of:
step 1), acquiring the running speed of a vehicle, the running road section state of the vehicle and the information of obstacles in front of the vehicle;
step 2), if the vehicle running road section state is an uphill section, controlling the vehicle by a driver; if the vehicle running section is in a downhill state and no obstacle exists in the front safety distance, reminding a driver to reduce the oil supply of the accelerator; when the vehicle is in a downhill state and no obstacle exists in the front safe distance, and the running speed of the vehicle is greater than the set safe speed per hour, the accelerator supply is controlled to be reduced, and when the vehicle is in the downhill state and the obstacle exists in the front safe distance, the engine is used for braking, and meanwhile, the driver is reminded of taking braking.
2. The method of claim 1, wherein the vehicle safe speed per hour is less than 10% -15% of the road maximum speed limit.
3. The freight vehicle speed control system is characterized by comprising an on-board controller (4), an engine power device management module (6) connected with the on-board controller (4), a rotating speed sensor, an on-board gyroscope, a voice prompt device and a radar sensor (1) arranged at the front end of a vehicle, wherein the engine power device management module is connected with the on-board controller;
the rotating speed sensor is used for acquiring the running speed of the vehicle and transmitting the running speed of the vehicle to the vehicle-mounted controller; the vehicle-mounted gyroscope is used for acquiring the vehicle running horizontal state and transmitting the acquired vehicle running horizontal state to the vehicle-mounted controller (4); the radar sensor (1) is used for acquiring vehicle front-end obstacle information and transmitting the vehicle front-end obstacle information to the vehicle-mounted controller; the vehicle-mounted controller judges whether the vehicle driving road section is an uphill section or a downhill section according to the vehicle driving level state, and when the vehicle is in the uphill section, the vehicle-mounted controller (4) does not intervene in vehicle control; when the vehicle is in a downhill state and no obstacle exists in the front safety distance, the voice prompt device reminds the driver to reduce the oil supply of the accelerator; when the vehicle is in a downhill state and no obstacle exists in the front safe distance, and the running speed of the vehicle is greater than the set safe speed per hour, the vehicle-mounted controller (4) reduces the accelerator supply through the engine power device management module (6), and when the vehicle is in the downhill state and an obstacle exists in the front safe distance, the vehicle-mounted controller (4) reduces the accelerator supply through the engine power device management module (6) and simultaneously utilizes the engine to brake to remind a driver of braking.
4. The system of claim 3, further comprising a load sensor for obtaining vehicle load information and calculating a vehicle braking distance based on the vehicle load information.
5. A freight vehicle speed control system according to claim 4, in which the tachometer means employs an anti-lock braking system to capture the vehicle speed.
6. A freight vehicle speed control system according to claim 3, characterised in that the load sensors comprise a front axle load sensor (2) and a drive axle load sensor (7), and that the average load of the vehicle is obtained by means of the front axle load sensor (2) and the drive axle load sensor (7).
7. The system for controlling the speed of a freight vehicle according to claim 3, wherein the vehicle-mounted controller (4) is further connected to the vehicle-mounted navigation module (5), and the vehicle-mounted controller (4) acquires the current road speed limit through the vehicle-mounted navigation module (5).
8. A freight vehicle speed control system according to claim 3, in which the safe speed per hour of the vehicle is less than 10% -15% of the highest speed limit of the road.
9. The system of claim 3, wherein the driver is only alerted to reduce the throttle supply by the voice prompt when the vehicle is traveling horizontally with a grade of downhill grade less than 2 °.
10. The system of claim 3, wherein when the vehicle is traveling horizontally with a grade of 2 ° or more and the grade is downhill, the engine power plant management module is not detecting and the supply is reduced, the voice prompt is configured to prompt the driver to reduce the supply of fuel while the engine power plant management module is configured to reduce the supply of fuel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202010998180.2A CN112109546B (en) | 2020-09-21 | 2020-09-21 | Freight vehicle speed control system and method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010998180.2A CN112109546B (en) | 2020-09-21 | 2020-09-21 | Freight vehicle speed control system and method |
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| CN112109546A true CN112109546A (en) | 2020-12-22 |
| CN112109546B CN112109546B (en) | 2022-03-15 |
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| CN114087099A (en) * | 2021-12-08 | 2022-02-25 | 安徽江淮汽车集团股份有限公司 | Fuel supply system and method for cargo vehicle |
| CN114087098A (en) * | 2021-12-08 | 2022-02-25 | 安徽江淮汽车集团股份有限公司 | Cargo vehicle fuel supply system based on GPS |
| CN114834250A (en) * | 2022-03-25 | 2022-08-02 | 潍柴动力股份有限公司 | Vehicle self-adjusting speed limiting method, speed limiting system and vehicle |
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|---|---|
| CN112109546B (en) | 2022-03-15 |
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