阅读说明：本技术 一种道路磁场辅助车辆制动系统及制动方法 (Road magnetic field auxiliary vehicle braking system and braking method ) 是由 柯犇 李帅 贾卓衡 高宇 范一平 于 2019-10-31 设计创作，主要内容包括：本发明提供一种道路磁场辅助车辆制动系统,包括：车载线圈、线圈磁芯、磁体、蓄电池、车载电路控制模块；其中,所述线圈磁芯设置于车载线圈的中间位置并随所述车载线圈固定于车辆底盘处；所述磁体为多个,多个磁体按照上磁极为分别为N极、S极交错排列的方式沿道路方向间隔一定距离固定于路面下方；所述车载电路控制模块用于基于车辆状态控制所述蓄电池向车载线圈供电,从而使所述线圈磁芯与磁体配合产生使车辆制动的磁力。本发明将磁场运用到路面上,车载线圈在车辆上形成一个磁场,通过两个磁场的相互作用来达到制动效果,其相当于制动力直接作用于车身,能够降低路面条件对车辆制动效果的影响,提高车辆的制动效率。(The invention provides a road magnetic field auxiliary vehicle braking system, comprising: the vehicle-mounted circuit comprises a vehicle-mounted coil, a coil magnetic core, a magnet, a storage battery and a vehicle-mounted circuit control module; the coil magnetic core is arranged in the middle of the vehicle-mounted coil and is fixed to a vehicle chassis along with the vehicle-mounted coil; the plurality of magnets are fixed below the road surface at intervals along the road direction in a mode that upper magnetic poles are respectively N poles and S poles which are staggered; the vehicle-mounted circuit control module is used for controlling the storage battery to supply power to the vehicle-mounted coil based on the vehicle state, so that the coil magnetic core and the magnet are matched to generate magnetic force for braking the vehicle. The invention applies the magnetic field to the road surface, the vehicle-mounted coil forms a magnetic field on the vehicle, the braking effect is achieved through the interaction of the two magnetic fields, which is equivalent to that the braking force directly acts on the vehicle body, the influence of the road surface condition on the vehicle braking effect can be reduced, and the vehicle braking efficiency is improved.)

1. A road magnetic field assisted vehicle braking system, comprising: the vehicle-mounted circuit comprises a vehicle-mounted coil, a coil magnetic core, a magnet, a storage battery and a vehicle-mounted circuit control module;

the coil magnetic core is arranged in the middle of the vehicle-mounted coil and is fixed to a vehicle chassis along with the vehicle-mounted coil;

the plurality of magnets are fixed below the road surface at intervals along the road direction in a mode that upper magnetic poles are respectively N poles and S poles which are staggered;

the vehicle-mounted circuit control module is used for controlling the storage battery to supply power to the vehicle-mounted coil based on the vehicle state, so that the coil magnetic core and the magnet are matched to generate magnetic force for braking the vehicle.

2. A road magnetic field assisted vehicle brake system according to claim 1, wherein a road marking is provided on the road surface between the adjacent magnets, the road marking is of two colors and the color of the adjacent road markings is different, and the vehicle is provided with a color sensor for detecting the color of the road marking, and the color sensor is connected with the on-board circuit control module.

3. A road magnetic field assisted vehicle brake system according to claim 2, in which the colour sensor is located to one side of the on-board coil and is fixed to the vehicle chassis.

4. A road magnetic field assisted vehicle brake system according to claim 3, in which the colour sensor has its sensing end in line with the centre of the vehicle coil.

5. A road magnetic field assisted vehicle brake system as claimed in claim 1, in which the magnets are bar magnets, the bar magnets being permanent magnets or electromagnets.

6. A road magnetic field assisted vehicle brake system as claimed in claims 1 to 5, wherein the vehicle circuit control module for controlling the battery to supply power to the vehicle coil based on the vehicle state comprises: the vehicle-mounted circuit control module is used for controlling the storage battery to provide current for the vehicle-mounted coil based on the vehicle state, and the current enables the magnetic pole generated below the coil magnetic core to be opposite to the magnetic pole on the magnet positioned behind the coil magnetic core.

7. A road magnetic field assisted vehicle braking method for a braking system according to any one of claims 1 to 6, the method comprising:

setting a starting speed threshold of a braking system; when a vehicle brake pedal is stepped on or a related switch key is pressed down, the vehicle-mounted circuit control module compares the current vehicle speed with a speed threshold value, when the current vehicle speed exceeds the speed threshold value, the brake system is started, at the moment, the vehicle-mounted circuit control module controls the storage battery to provide current for the vehicle-mounted coil based on a road marking color signal fed back by the color sensor, and a magnetic pole generated below the coil magnetic core is opposite to a magnetic pole on a magnet positioned behind the coil magnetic core and is the same as a magnetic pole on a magnet positioned in front of the coil magnetic core.

8. The method as claimed in claim 7, wherein when the braking is started, the on-board circuit control module controls the battery to supply current to the on-board coil in a direction which varies with the color of the road marking, so as to ensure that the magnetic pole generated below the coil core is opposite to the magnetic pole on the magnet behind the coil core and the same as the magnetic pole on the magnet in front of the coil core.

Technical Field

The invention mainly relates to the technical field related to vehicle braking, in particular to a road magnetic field auxiliary vehicle braking system and a braking method.

Background

The electromagnetic brake adjusts the braking force of the brake by changing the voltage of an electromagnetic coil through an electromagnet in the form of current mainly through a braking signal sent by a controller. In the prior art, the technology of realizing vehicle braking by adopting an electromagnetic braking mode is applied to the interior of a vehicle, braking is realized by limiting the rotation of wheels, and the speed reduction effect is realized by the friction between the wheels and a road.

In the technology of arranging the electromagnetic brake inside the vehicle, the road condition has a large influence on the vehicle braking effect, and particularly when the vehicle is in a long downhill road section, a large curve road section and a severe weather accident prone road section, the friction between the wheels and the road cannot achieve the ideal braking effect.

Disclosure of Invention

In order to overcome the defects of the prior art, the invention provides a road magnetic field auxiliary vehicle braking system and a braking method by combining the prior art and starting from practical application. The invention applies the magnetic field to the road surface, the vehicle-mounted coil forms a magnetic field on the vehicle, the braking effect is achieved through the interaction of the two magnetic fields, which is equivalent to that the braking force directly acts on the vehicle body, the influence of the road surface condition on the vehicle braking effect can be reduced, and the vehicle braking efficiency is improved.

The technical scheme of the invention is as follows:

according to one aspect of the present invention, there is provided a road magnetic field assisted vehicle braking system comprising: the vehicle-mounted circuit comprises a vehicle-mounted coil, a coil magnetic core, a magnet, a storage battery and a vehicle-mounted circuit control module;

the coil magnetic core is arranged in the middle of the vehicle-mounted coil and is fixed to a vehicle chassis along with the vehicle-mounted coil;

the plurality of magnets are fixed below the road surface at intervals along the road direction in a mode that upper magnetic poles are respectively N poles and S poles in staggered arrangement;

the vehicle-mounted circuit control module is used for controlling the storage battery to supply power to the vehicle-mounted coil based on the vehicle state, so that the coil magnetic core and the magnet are matched to generate magnetic force for braking the vehicle.

Furthermore, a road marking is arranged on the road surface between the adjacent magnets, the road marking adopts two colors and is adjacent to the road marking, the color of the road marking is different, a color sensor for detecting the color of the road marking is arranged on the vehicle, and the color sensor is connected with the vehicle-mounted circuit control module.

Further, the color sensor is arranged on one side of the vehicle-mounted coil and fixed on a vehicle chassis.

Furthermore, the induction end of the color sensor and the circle center of the vehicle-mounted coil form a straight line.

Further, the magnet is a bar magnet, and the bar magnet is a permanent magnet or an electromagnet.

Further, the on-board circuit control module is configured to control the storage battery to supply power to the on-board coil based on a vehicle state, and includes: the vehicle-mounted circuit control module is used for controlling the storage battery to provide current for the vehicle-mounted coil based on the vehicle state, and the current enables the magnetic pole generated below the coil magnetic core to be opposite to the magnetic pole on the magnet positioned behind the coil magnetic core.

According to another aspect of the present invention, there is provided a road magnetic field assisted vehicle braking method for the above braking system, the method comprising: setting a starting speed threshold of a braking system; when a vehicle brake pedal is stepped on or a related switch key is pressed down, the vehicle-mounted circuit control module compares the current vehicle speed with a speed threshold value, when the current vehicle speed exceeds the speed threshold value, the brake system is started, at the moment, the vehicle-mounted circuit control module controls the storage battery to provide current for the vehicle-mounted coil based on a road marking color signal fed back by the color sensor, and a magnetic pole generated below the coil magnetic core is opposite to a magnetic pole on a magnet positioned behind the coil magnetic core and is the same as a magnetic pole on a magnet positioned in front of the coil magnetic core.

Further, when the braking starts, the vehicle-mounted circuit control module controls the storage battery to supply current to the vehicle-mounted coil along with the color change of the road surface marking line, and ensures that the magnetic pole generated below the coil magnetic core is opposite to the magnetic pole on the magnet positioned behind the coil magnetic core and is the same as the magnetic pole on the magnet positioned in front of the coil magnetic core.

The invention has the beneficial effects that:

the invention combines the development concept of the current vehicle-road cooperation, and provides a method for building a road surface braking area in a key road section and position under the environment that the vehicle cannot be decelerated and risk-avoiding timely due to rain, snow, fog and the like or due to the reason of a driver, wherein a magnetic field generating device is pre-embedded under the road surface braking area, and an electromagnetic coil is arranged on the vehicle to help the vehicle and the driver to brake through the interaction of magnetic fields, so that the vehicle-road cooperation risk-avoiding is realized; because the braking force directly acts on the vehicle body, the influence of the road surface condition on the vehicle braking effect can be reduced, and the vehicle braking efficiency is ensured.

Drawings

FIG. 1 is a schematic diagram of a braking system of the present invention;

FIG. 2 is a schematic view of a pavement marking of the present invention;

FIG. 3 is a first schematic diagram of the braking stress of the vehicle according to the present invention;

FIG. 4 is a schematic diagram of a braking force of a vehicle according to the present invention;

FIG. 5 is a schematic diagram of the braking force of the vehicle of the present invention;

FIG. 6 is a control flow chart of the present invention.

Detailed Description

The invention is further described with reference to the accompanying drawings and specific embodiments. It should be understood that these examples are for illustrative purposes only and are not intended to limit the scope of the present invention. Further, it should be understood that various changes or modifications of the present invention may be made by those skilled in the art after reading the teaching of the present invention, and these equivalents also fall within the scope of the present application.

As shown in fig. 1 to 5, the present invention provides a road magnetic field assisted vehicle braking system, which comprises: the vehicle-mounted coil 1, the coil magnetic core 2, the magnet 3, the storage battery and the vehicle-mounted circuit control module; the coil magnetic core 2 is arranged in the middle of the vehicle-mounted coil 1 and is fixed at a vehicle chassis along with the vehicle-mounted coil 1; the plurality of magnets 3 are fixed below the road surface at intervals along the road direction in a manner that upper magnetic poles are respectively N poles and S poles which are staggered; the vehicle-mounted circuit control module is used for controlling a braking system and mainly controls the storage battery to supply power to the vehicle-mounted coil 1 according to the state of a vehicle, so that the coil magnetic core 2 and the magnet 3 are matched to generate magnetic force for braking the vehicle.

For the braking system structure of the present invention, as shown in fig. 1 and 2, the magnets 3 are bar magnets, preferably permanent magnets, or electromagnets, and a plurality of magnets 3 are sequentially laid under the road surface at a certain interval, and the upper magnetic poles of adjacent magnets 3 are sequentially arranged in a staggered manner, i.e., N pole, S pole, N pole, and S pole … …. The vehicle-mounted coil 1 and the coil magnetic core 2 jointly form a variable magnetic force combined structure of the vehicle. When a vehicle needs to be braked by using the braking system in the running process, the storage battery supplies forward current or reverse current to the vehicle-mounted coil 1, so that the lower magnetic pole of the coil magnetic core 2 mounted on the vehicle forms an N pole or an S pole, and the magnetic force of the coil magnetic core 2 and the magnetic body 3 is matched to realize braking of the vehicle.

Specifically, as shown in fig. 3, when the coil core 2 is located between two adjacent magnets 3 during the vehicle running and braking process (as shown in fig. 3, the upper magnetic pole of the magnet 3 located in front of the vehicle running is S pole, and the upper magnetic pole of the magnet 3 located behind is N pole), the vehicle-mounted circuit control module controls and controls the battery to apply a positive current to the vehicle-mounted coil 1, at this time, the lower magnetic pole of the coil core 2 becomes S pole, the N pole of the magnet 3 located behind generates attraction force F2 with the S pole of the coil core 2, the S pole of the magnet 3 located in front generates repulsive force F1 with the S pole of the coil core 2, and as shown in fig. 5, the resultant force of F1 and F2 constitutes F combination in the figure, and the F combination can achieve the vehicle braking. Similarly, as shown in fig. 4, when the vehicle continues to travel and brake, the vehicle-mounted circuit control module controls the battery to apply a reverse current to the vehicle-mounted coil 1 when moving to a position between the next adjacent magnets 3, at which the lower magnetic pole of the coil core 2 changes to the N pole, the S pole of the magnet 3 located at the rear generates an attraction force F3 with the N pole of the coil core 2, and the N pole of the magnet 3 located at the front generates a repulsive force F4 with the N pole of the coil core 2, and the resultant force of F3 and F4 still realizes the braking of the vehicle backwards.

Therefore, only one road section is required to be made into a staggered arrangement of N, S poles as magnet poles under the road of fig. 1, corresponding identification signals are arranged on the road surface between the central lines of the two magnets 3 so that the vehicle can identify the magnetic pole directions of the front and rear magnets 3, and if the vehicle needs to brake on the lane, a driver only needs to turn on the braking system to control the flow direction and the current magnitude of the power supplied to the vehicle-mounted coil 1 by the vehicle-mounted storage battery, and the vehicle can be subjected to a continuous braking force to help brake the vehicle.

As a preferable aspect of the present invention, in the present invention, a method for providing a vehicle-mounted coil 1 capable of identifying whether the upper pole of the magnet 3 located in front of and behind the vehicle-mounted coil is the N pole or the S pole in the vehicle forming process is: the road surface between adjacent magnets 3 is provided with road surface marked lines, the road surface marked lines adopt two colors, the colors of the adjacent road surface marked lines are different, a color sensor for detecting the colors of the road surface marked lines is arranged on the vehicle, and the color sensor is connected with the vehicle-mounted circuit control module. Specifically, two sides of the vehicle-mounted coil 1 at the vehicle chassis position can be respectively provided with a color sensor, the pavement marker is arranged between two adjacent magnets 3, and the colors of the pavement marker can be arbitrarily selected into two different colors.

For the convenience of the description of the invention, the colors of the pavement marking are respectively white pavement marking 4 and yellow pavement marking 5, as shown in fig. 2, the white road markings 4, the yellow road markings 5, the white road markings 4 and the yellow road markings 5 … … are arranged on the road at equal intervals in turn, when the color sensor identifies that the road marking below is the white road marking 4 in the running process of the vehicle, the vehicle-mounted circuit control module judges that the upper magnetic pole of the magnet 3 positioned at the rear part of the vehicle-mounted coil 1 is the N pole, the upper magnetic pole of the magnet 3 positioned at the front part of the vehicle-mounted coil 1 is the S pole, when the color sensor identifies that the road marking at the lower part is a yellow road marking 5, the vehicle-mounted circuit control module judges that the upper magnetic pole of the magnet 3 positioned at the rear part of the vehicle-mounted coil 1 is the S pole, the upper magnetic pole of the magnet 3 positioned at the front part of the vehicle-mounted coil 1 is the N pole, and further, the direction of the current applied from the battery to the in-vehicle coil 1 can be accurately controlled based on the above determination.

Preferably, in the invention, the sensing end of the color sensor and the circle center of the vehicle-mounted coil 1 form a straight line, so as to ensure that the sensing end of the color sensor and the vehicle-mounted coil 1 are at the same position, and the aim of accurately controlling the current direction of the vehicle-mounted coil 1 is fulfilled.

As shown in fig. 6, the present invention provides a braking method for the braking system of the road magnetic field assisted vehicle, which specifically comprises:

when a driver steps on a brake pedal or presses a corresponding brake system start-stop switch, the vehicle-mounted circuit control module judges whether the driving speed exceeds a preset threshold value, if not, the loop switch is not started, if so, the loop switch is started, the loop is switched on, and at the moment, the vehicle-mounted storage battery supplies current to the vehicle-mounted coil 1, so that the vehicle realizes braking.

The invention combines electromagnetic braking and traditional braking, improves the braking efficiency of the vehicle, reduces the braking distance and improves the safety of the vehicle; meanwhile, due to the combination of the two braking modes, the abrasion of the friction plate is reduced, and the service life of the friction plate is prolonged; when one braking mode fails, the other braking mode can meet the requirement of braking performance, so that the fault tolerance rate of the braking system is improved; and the condition that the vehicle skids can be effectively dealt with in sleet weather, the accident rate has been reduced.