CN112622615B - Accelerator mistaken-stepping prevention and active braking system and active braking method thereof - Google Patents
Accelerator mistaken-stepping prevention and active braking system and active braking method thereof Download PDFInfo
- Publication number
- CN112622615B CN112622615B CN202011580784.1A CN202011580784A CN112622615B CN 112622615 B CN112622615 B CN 112622615B CN 202011580784 A CN202011580784 A CN 202011580784A CN 112622615 B CN112622615 B CN 112622615B
- Authority
- CN
- China
- Prior art keywords
- accelerator
- iron core
- tube
- pedal
- stepping
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- 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
- B60K26/00—Arrangements or mounting of propulsion unit control devices in vehicles
- B60K26/02—Arrangements or mounting of propulsion unit control devices in vehicles of initiating means or elements
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T7/00—Brake-action initiating means
- B60T7/12—Brake-action initiating means for automatic initiation; for initiation not subject to will of driver or passenger
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T2201/00—Particular use of vehicle brake systems; Special systems using also the brakes; Special software modules within the brake system controller
- B60T2201/02—Active or adaptive cruise control system; Distance control
- B60T2201/022—Collision avoidance systems
Landscapes
- Engineering & Computer Science (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Regulating Braking Force (AREA)
Abstract
The invention discloses an accelerator mistaken-stepping prevention and active braking system and an active braking method thereof. The invention relates to an accelerator mistaken-stepping prevention system which comprises an active brake electromagnetic tube, an accelerator mistaken-stepping prevention electromagnetic tube, a bottom plate, a controller, a forward-looking camera, a pedal bottom camera and a safety button. Two ends of the accelerator anti-misstep electromagnetic tube are respectively hinged with the bottom plate and the accelerator pedal. Two ends of the active braking electromagnetic tube are respectively hinged with the bottom plate and the brake pedal. The active brake electromagnetic tube and the accelerator are identical in structure of the mistaken stepping prevention electromagnetic tube and comprise an upper lifting lug, an upper iron core, an upper excitation coil, a lower lifting lug, a lower iron core, a lower excitation coil, a main telescopic tube, a return spring and a rubber dustproof sleeve. The invention can be used for transforming the existing vehicle without the automatic braking function, and can realize the functions of preventing the accelerator from being stepped by mistake and automatically braking the vehicle only by simple installation; when the invention detects that the accelerator is mistakenly stepped, the invention can utilize the electromagnetic repulsion to prevent the driver from stepping on the accelerator pedal and utilize the electromagnetic attraction to automatically brake.
Description
Technical Field
The invention belongs to the technical field of automobile active safety technology, and particularly relates to a method and a system for preventing an accelerator from being stepped on by mistake and actively braking.
Background
In recent years, the automobile keeping quantity in China is increased year by year, and the automobile keeping quantity in 2020 reaches 6.3 hundred million or is the first to be all. The traffic congestion caused by the traffic congestion is increasingly prominent, and the traffic accident rate is also increased year by year. Among various causes of traffic accidents, traffic accidents caused by using an accelerator as a brake account for more than 40%. According to the incomplete statistics of traffic departments, about 9 thousands of accidents are caused by taking an accelerator as a brake every year; injure about 10 ten thousand people; about 2.5 million people die. According to statistics, most of drivers who are easy to mistakenly step on the accelerator account for 70% of new drivers. The brake pedal is adjacent to the accelerator pedal from the structure of the automobile, so that the accelerator is easy to be stepped on by mistake. From the operation of a driver, when the driver meets an emergency and the automobile runs on a road with crowded traffic, the driver is over-tense and mistakes the accelerator as a brake to cause traffic accidents.
A large amount of researches are done to the system of preventing stepping on by mistake to the throttle in domestic, and relevant patent has a lot, can divide into two kinds: mechanical type, automatically controlled type. Whether the accelerator pedal is mistakenly stepped or not is judged mechanically according to the stepping speed or the stepping force of the accelerator pedal, the movement of the accelerator pedal is limited, the method is easy to misjudge, the control precision is low, and the driving safety of the automobile cannot be guaranteed due to the fact that the purely mechanical method only limits the movement of the accelerator pedal and does not brake. The electric control type MCU comprehensively judges whether the automobile is stepped on by mistake according to the speed, the acceleration and the position information of the accelerator pedal and the detection data of the radar or the camera, and sends a control instruction to the automobile ECU after the misstep is identified so as to control the throttle of the automobile internal actuator and the electronic vacuum booster or the external actuator to stop the automobile from accelerating and braking. Although the method can accurately judge the wrong stepping, the wiring harness in the automobile needs to be changed, the installation is complex, and the ECU of the automobile is difficult to receive the instruction of external control. Therefore, it is urgently needed to develop a novel accelerator mistaken-stepping prevention system, which can accurately identify the mistaken stepping action of the accelerator of a driver, prevent the accelerator pedal from continuing to act, and take proper braking action according to the surrounding environment of an automobile. The system can greatly improve the active safety performance of the automobile.
Disclosure of Invention
The invention aims to solve the problems in the prior art and provides an accelerator mistaken-stepping prevention and active braking method and system which are simple in structure, convenient to install, low in use cost, high in reliability and flexibility and capable of adjusting the opening degrees of a brake pedal and an accelerator pedal in real time according to the environment of an automobile when the accelerator is mistakenly stepped.
The invention relates to an accelerator mistaken-stepping prevention system which comprises an active brake electromagnetic tube, an accelerator mistaken-stepping prevention electromagnetic tube, a bottom plate, a controller, a forward-looking camera, a pedal bottom camera and a safety button. The front-view camera is mounted on the vehicle. The bottom plate is fixed at the bottom of the cockpit. Two ends of the accelerator anti-misstep electromagnetic tube are respectively hinged with the bottom plate and the accelerator pedal. Two ends of the active braking electromagnetic tube are respectively hinged with the bottom plate and the brake pedal. The active brake electromagnetic tube and the accelerator mistakenly-stepping prevention electromagnetic tube are identical in structure and comprise an upper lifting lug, an upper iron core, an upper excitation coil, a lower lifting lug, a lower iron core, a lower excitation coil, a main telescopic tube, a return spring and a rubber dustproof sleeve. The upper iron core and the lower iron core are respectively connected to two ends of the inner cavity of the rubber dustproof sleeve in a sliding manner. The inner ends of the upper lifting lug and the lower lifting lug are respectively fixed with the lower iron core of the upper iron core. The upper excitation coil is wound on the upper iron core; the lower excitation coil is wound on the lower iron core. In the accelerator anti-misstep electromagnetic tube, when the upper excitation coil and the lower excitation coil are electrified, repulsion force is generated between the upper iron core and the lower iron core; in the active braking electromagnetic tube, when the upper excitation coil and the lower excitation coil are electrified, suction force is generated between the upper iron core and the lower iron core. The main telescopic pipe is arranged in the center of the rubber dustproof sleeve, and two ends of the main telescopic pipe are respectively fixed with the upper iron core and the lower iron core. The main telescopic pipe is provided with elastic force for restoring to the stretching state by a return spring.
Preferably, the active brake electromagnetic tube and the accelerator mistaken-stepping prevention electromagnetic tube both further comprise ultrasonic displacement sensors. The ultrasonic displacement sensor comprises an ultrasonic transmitting end and an ultrasonic receiving end. The ultrasonic transmitting end and the ultrasonic receiving end are both arranged at the center of the inner side face of the lower iron core and face the upper iron core.
Preferably, the accelerator anti-misstep system further comprises a safety button; the safety button is mounted on the steering wheel. When the safety button is pressed down, the active brake electromagnetic tube and the accelerator mistakenly-stepping prevention electromagnetic tube are powered off.
Preferably, the pedal bottom camera is arranged at the bottom of the vehicle cab, faces the accelerator pedal and the brake pedal and is provided with a light supplement lamp.
Preferably, the front-view camera adopts a binocular camera and is arranged on the front side of the interior rearview mirror.
Preferably, the middle and lower positions of the accelerator pedal and the brake pedal are both provided with first adjusting sliding chutes. The first adjusting sliding grooves on the accelerator pedal and the brake pedal are respectively provided with an upper connecting piece. The upper connecting piece can be fixed with different positions of the first adjusting sliding groove. The accelerator pedal, the upper connecting piece on the brake pedal, the active brake electromagnetic tube and the upper lifting lug in the accelerator anti-misstep electromagnetic tube form a revolute pair.
Preferably, the two sides of the top surface of the bottom plate are both provided with second adjusting sliding grooves. The two connecting slide blocks are respectively arranged in the two second adjusting sliding chutes of the bottom plate; the connecting slide block can be fixed at different positions of the second adjusting chute. The two connecting slide blocks, the active brake electromagnetic tube and the accelerator mistakenly-stepping prevention electromagnetic tube inner and lower lifting lugs form a revolute pair.
Preferably, the main telescopic pipe comprises a return spring and an upper-stage sliding cylinder, a middle sliding cylinder, a lower-stage sliding cylinder and a lower-stage sliding cylinder which are sequentially connected. The diameters of one ends of the upper primary slide cylinder, the upper secondary slide cylinder and the middle slide cylinder are reduced from large to small and are sleeved in sequence; the diameters of the other ends of the next-stage sliding cylinder, the next-stage sliding cylinder and the middle sliding cylinder are reduced from large to small and are sleeved in sequence; the return spring is sleeved on the upper second-stage sliding barrel, the middle sliding barrel and the lower second-stage sliding barrel, and two ends of the return spring respectively abut against the inner end faces of the upper first-stage sliding barrel and the lower first-stage sliding barrel.
Preferably, a plurality of side extension tubes are further arranged in the rubber dustproof sleeve; the extension tubes on each side are uniformly distributed along the circumferential direction of the main extension tube. Two ends of the side extension tube are respectively fixed with the lower iron core of the upper iron core.
The active braking method of the accelerator mistaken stepping prevention and active braking system comprises the following specific steps:
step one, a front-view camera detects whether an obstacle appears in a safety distance in front of a vehicle; if the obstacle in front of the vehicle is detected; meanwhile, detecting that the accelerator pedal is stepped on, wherein the stepping speed is greater than the preset mistaken stepping speed; the accelerator is considered to be stepped on by mistake.
And step two, when the accelerator is detected to be stepped on by mistake, the upper magnet exciting coil and the lower magnet exciting coil in the accelerator mistaken-stepping prevention magnet tube are electrified, so that repulsive force is generated between the upper iron core and the lower iron core, and the stepping force of a driver on the accelerator pedal is resisted. Meanwhile, an upper magnet exciting coil and a lower magnet exciting coil in the active brake solenoid are electrified, so that attraction force is generated between the upper iron core and the lower iron core, and active braking is realized.
And step three, after the obstacle in front of the vehicle disappears or the safety button is pressed down, the accelerator mistaken-stepping state is considered to disappear, and the active brake electromagnetic tube and the accelerator mistaken-stepping prevention electromagnetic tube are powered off.
The invention has the beneficial effects that:
1. the invention can be used for transforming the existing vehicle without the automatic braking function, and can realize the functions of preventing the accelerator from being stepped by mistake and automatically braking the vehicle only by simple installation; when the invention detects that the accelerator is mistakenly stepped, the invention can utilize the electromagnetic repulsion to prevent the driver from stepping on the accelerator pedal and utilize the electromagnetic attraction to automatically brake.
2. The accelerator mistaken-stepping prevention system adopts the forward-looking camera, the pedal bottom camera and the ultrasonic displacement sensor in the electromagnetic pipe to identify the mistaken stepping action of a driver, the forward-looking camera identifies whether an obstacle exists in front of a vehicle or not, the pedal bottom camera identifies the leg action of the driver, and the ultrasonic displacement sensor in the electromagnetic pipe acquires the position information of the pedal. When the front-view camera recognizes that an obstacle exists in front of the vehicle, the bottom camera recognizes that the driver steps on the accelerator pedal, and the ultrasonic displacement sensor detects that the position of the accelerator pedal is changed greatly, the system judges that the obstacle is a mistaken stepping action. Therefore, the identification precision of the false stepping action can be fully ensured.
3. The electromagnetic tube is convenient to adjust the angle and the position of the electromagnetic tube through the design of the connecting slide block and the upper connecting piece, can be suitable for suspension type accelerator pedals and brake pedals of various automobiles, can be fixed between the accelerator pedal and the bottom plate, and is convenient to disassemble and assemble between the brake pedal and the bottom plate.
4. The electromagnetic tubes are arranged on the accelerator pedal and the brake pedal, when the system detects that the accelerator pedal and the brake pedal are mistakenly stepped on, the system can respectively control the energizing size and the energizing direction of the exciting coils of the two electromagnetic tubes, so that repulsive force is generated between the upper permanent magnet and the lower permanent magnet of the electromagnetic tubes on the accelerator pedal to block the continuous movement of the accelerator pedal, force feedback is provided for a driver, meanwhile, suction force is generated between the upper permanent magnet and the lower permanent magnet of the electromagnetic tubes on the brake pedal to replace the driver to step on the brake pedal, the stroke of the brake pedal is accurately controlled under the actual condition, and the driving safety of an automobile is highly guaranteed.
5. According to the electromagnetic tube, the main telescopic tube and the side telescopic tubes are adopted, the sizes of the mechanism can be changed by the relative sliding of the sliding cylinders at all stages in the movement process of the pedal, and the electromagnetic tube is more beneficial to being arranged in a narrow space where an automobile pedal is located compared with a common piston type structure.
6. The electromagnetic tube can adjust the polarity and the electromagnetic force generated by the electromagnetic tube by controlling the electrifying size and the electrifying direction of the upper and lower excitation coils, thereby controlling the length of the folding tube and the displacement of the control pedal.
7. The electromagnetic tube of the invention has the advantages that the polarity of the electromagnetic force is opposite by controlling the electrifying size and the electrifying direction of the upper exciting coil and the lower exciting coil, the electromagnetic force is increased along with the increase of the compression deformation of the return spring, the generated electromagnetic attraction counteracts the elastic restoring force of the spring, and the compression deformation of the return spring can be detected by the ultrasonic sensor. Therefore, the foot feeling of a driver when the driver normally steps on the accelerator and the brake pedal is not influenced by the mistaken stepping prevention device.
8. According to the electromagnetic tube, the built-in ultrasonic displacement sensor is used for converting the angular displacement of the pedal into the linear displacement for detecting the upper permanent magnet and the lower permanent magnet, and the smaller angular stroke of the accelerator pedal is converted into the larger linear displacement stroke, so that the measurement precision can be improved, and the cost of the sensor can be reduced.
9. The electromagnetic tube is of a highly symmetrical structure, the upper permanent magnet, the lower permanent magnet, the upper magnet exciting coil and the lower magnet exciting coil are completely the same, and the main telescopic tube and the side telescopic tubes are both formed by connecting a plurality of completely same sliding cylinders in series, so that the electromagnetic tube is convenient to process, manufacture and assemble.
10. The safety button can stop the control of the controller on the electromagnetic tube, and when the driver finds that the mistaken stepping action is recognized by mistake or the driver finds that the mistaken stepping action is processed by the system to be too aggressive, the driver can take over the accelerator pedal and the brake pedal again after pressing the safety button.
Drawings
FIG. 1 is a schematic view of an accelerator step-on prevention system according to the present invention;
FIG. 2 is a schematic view of the working flow of the accelerator step-on prevention system of the present invention;
FIG. 3 is a cross-sectional view of a magnetron according to the present invention;
FIG. 4 is a sectional view showing an extended state of the main telescopic tube in the present invention;
FIG. 5 is a sectional view showing a shortened state of the main telescopic tube in the present invention;
FIG. 6 is a sectional view showing an extended state of a side extension tube according to the present invention;
FIG. 7 is a sectional view showing a state where the side telescopic tube is shortened in the present invention.
In the figure: 101. a pedal cylindrical pin; 102. an upper connecting piece; 103. the accelerator is prevented from stepping on the electromagnetic tube by mistake; 104. an accelerator pedal; 105. a brake pedal; 106. actively braking the electromagnetic tube; 107. connecting the sliding block; 108. a base plate; 108-1, a second adjusting chute; 108-2 controller mounting slots; 108-3, a camera mounting groove; 1. an upper lifting lug; 2. an upper iron core; 3. an upper excitation coil; 4. a first lead hole; 5. a lower lifting lug; 6. a lower iron core; 7. a lower excitation coil; 8. a second lead hole; 9 a main telescopic pipe; 9-1, a slide cylinder at the upper stage; 9-2, an upper secondary slide cylinder; 9-3, a middle sliding cylinder; 9-4, a lower secondary slide cylinder; 9-5, the next stage of sliding cylinder; 9-6, a main extension tube sliding groove; 9-7, positioning holes of the main telescopic pipes; 10. a side extension tube; 10-1, a first outer sleeve; 10-2, a middle rod; 10-3, a second outer sleeve; 10-4, a side extension tube sliding groove, 10-5 and a side extension tube positioning hole; 11. a rubber dustproof sleeve; 12. a return spring; 13. an ultrasonic displacement sensor; 13-1, an ultrasonic wave transmitting end; 13-2, and an ultrasonic receiving end.
Detailed Description
The invention is further described below with reference to the accompanying drawings.
Embodiments of the present invention will be described in further detail below with reference to the accompanying drawings.
As shown in fig. 1 and 2, an accelerator mis-stepping prevention system comprises an active brake solenoid 106, an accelerator mis-stepping prevention solenoid 103, an accelerator pedal 104, a brake pedal 105, a bottom plate, a controller, a front-view camera, a pedal bottom camera, a safety button and an alarm unit. The front-view camera adopts a binocular camera, is arranged on the front side of the interior rearview mirror and is embedded into the interior rearview mirror. The binocular camera not only can identify the obstacle, but also can determine the distance of the obstacle through parallax calculation of two images. The size and type of the obstacle in front of the vehicle and the distance information between the obstacle and the vehicle can be acquired by using the forward-looking binocular camera. The safety button is arranged on the steering wheel and is connected with the controller. The alarm unit is arranged in the vehicle and is connected with the controller through a lead. The camera is installed in cockpit bottom in footboard bottom, and has the light filling lamp, can open the light filling lamp when vehicle footboard position light is relatively poor. The camera at the bottom of the pedal is used for detecting the leg action of the driver and identifying the pedal on which the driver steps.
The top ends of the accelerator pedal 104 and the brake pedal 105 and the bottom of the cab form a rotating pair through a pedal cylindrical pin 101. First adjusting sliding grooves are formed in the middle and lower positions of the accelerator pedal 104 and the brake pedal 105. The upper connecting piece 102 is arranged on the first adjusting chutes of the accelerator pedal 104 and the brake pedal 105. The upper connector 102 includes an upper cover and a lower cover. The upper cover and the lower cover 10 are fixed by bolts and nuts. The upper connecting piece 102 can be fixed with different positions of the first adjusting runner. An accelerator pedal 104, an upper connecting piece 102 on a brake pedal 105, an active brake solenoid 106 and an upper lifting lug 1 in an accelerator anti-misstep solenoid 103 form a revolute pair.
The bottom plate is fixed at the front end of the bottom of the cockpit. The two sides of the top surface of the bottom plate are both provided with second adjusting chutes 108-1. The two connecting slide blocks 107 are respectively arranged in the two second adjusting chutes 108-1 of the bottom plate; the connecting slide 107 can be fixed in different positions of the second adjusting slide 108-1. The installation mode of the active brake electromagnetic tube 106 and the accelerator mistaken-stepping prevention electromagnetic tube 103 can obviously reduce the installation requirements of the bottom plate and increase the universality of the invention. The bottom plate is also provided with a camera mounting groove 108-3 and a controller mounting groove 108-2. The camera mounting groove 108-3 and the controller mounting groove 108-2 are both located between the two second adjustment chutes 108-1. The pedal bottom camera is fixed in the camera mounting groove 108-3 and faces the accelerator pedal 104 and the brake pedal 105. The controller is secured within the controller mounting slot 108-2.
As shown in fig. 3, the active brake solenoid 106 and the accelerator mistaken-stepping prevention solenoid 103 have the same structure, and both include an upper lifting lug 1, an upper iron core 2, an upper excitation coil 3, a lower lifting lug 5, a lower iron core 6, a lower excitation coil 7, a main telescopic pipe 9, a side telescopic pipe 10, an ultrasonic displacement sensor 13, a return spring 12 and a rubber dust-proof sleeve 11. The upper iron core 2 and the lower iron core 6 are respectively connected with two ends of the inner cavity of the rubber dustproof sleeve 11 in a sliding manner. The inner ends of the upper lifting lug 1 and the lower lifting lug 5 are respectively fixed with the lower iron core 6 of the upper iron core 2. The upper excitation coil 3 is wound on the upper iron core 2 and is led out through a first lead hole 4 formed in the upper iron core 2; the lower excitation coil 7 is wound on the lower iron core 6 and is led out through a second lead hole 8 formed in the lower iron core 6. When the upper excitation coil 3 and the lower excitation coil 7 are electrified, attraction force or repulsion force is generated between the upper iron core 2 and the lower iron core 6; specifically, in the active braking electromagnetic tube 106, two iron cores generate suction force to realize active braking; the accelerator mistaken-stepping prevention electromagnetic tube 103 generates repulsive force by the two iron cores and is used for resisting the mistaken stepping of the accelerator pedal 104 by a user; the main telescopic pipe 9 is arranged at the central position in the rubber dustproof sleeve 11, and two ends of the main telescopic pipe are respectively fixed with the lower iron core 6 of the upper iron core 2. The main telescopic tube 9 is provided with a spring force to return to the extended state by a return spring 12. A plurality of side extension tubes 10 are also arranged in the rubber dustproof sleeve 11; the side telescopic tubes 10 are evenly distributed along the circumferential direction of the main telescopic tube 9. Two ends of the side extension tube 10 are respectively fixed with the lower iron core 6 of the upper iron core 2. The ultrasonic displacement sensor 13 comprises an ultrasonic transmitting end 13-1 and an ultrasonic receiving end 13-2. The ultrasonic transmitting end 13-1 and the ultrasonic receiving end 13-2 are both arranged at the center of the inner side surface of the lower iron core 6 and face the upper iron core 2. Ultrasonic waves are transmitted through the ultrasonic transmitting end 13-1, are transmitted in the inner cavity of the main extension tube 9, meet the upper iron core 2 and are reflected to the lower iron core 6, and are finally received by the ultrasonic receiving end 13-2, and the distance between the upper iron core 2 and the lower iron core 6 is detected by calculating the time difference between the transmission of the ultrasonic waves and the reception of the ultrasonic waves. The precision of the ultrasonic displacement sensor 13 is 1-3 mm.
As shown in figures 4 and 5, the main extension tube 9 comprises an upper first-stage slide cylinder 9-1, an upper second-stage slide cylinder 9-2, a middle slide cylinder 9-3, a lower second-stage slide cylinder 9-4, a lower first-stage slide cylinder 9-5 and a return spring 12. The inner side surfaces of the upper first-stage sliding barrel 9-1, the upper second-stage sliding barrel 9-2, the middle sliding barrel 9-3, the lower second-stage sliding barrel 9-4 and the lower first-stage sliding barrel 9-5 are all provided with four main telescopic pipe sliding chutes 9-6; the diameters of one ends of the upper first-stage sliding barrel 9-1, the upper second-stage sliding barrel 9-2 and the middle sliding barrel 9-3 are reduced from large to small and are sleeved in sequence; the diameters of the other ends of the next-stage sliding barrel 9-5, the next-stage sliding barrel 9-4 and the middle sliding barrel 9-3 are reduced from large to small and are sleeved in sequence; thereby forming a waist-shaped main bellows 9. The return spring 12 is sleeved on the upper second-stage sliding barrel 9-2, the middle sliding barrel 9-3 and the lower second-stage sliding barrel 9-4, and two ends of the return spring respectively abut against the inner end faces of the upper first-stage sliding barrel 9-1 and the lower first-stage sliding barrel 9-5, so that the extension reset of the main telescopic pipe 9 is realized. Two adjacent sliding cylinders limit the circumferential relative movement through the main extension tube sliding groove 9-6 and the guide protrusion. Bosses are arranged at the outer ends of the upper stage sliding barrel 9-1 and the lower stage sliding barrel 9-5; the boss is provided with main telescopic pipe positioning holes 9-7 for fixing with the upper iron core 2 and the lower iron core 6; the inner cavities of the upper and lower secondary slide cylinders 9-2 and 9-4 are provided with four sliding grooves, four small bulges are distributed on the periphery of the top flange and are contacted with the four sliding grooves of the inner cavities of the upper and lower primary slide cylinders 9-1 and 9-5 to play the roles of circumferential positioning and guiding, and the upper and lower secondary slide cylinders 9-2 and 9-4 can relatively slide along the direction of the sliding grooves of the inner cavity of the primary slide cylinder. Four small bulges are distributed on the periphery of the top and bottom flanges of the middle sliding barrel 9-3 and are respectively contacted with four sliding chutes of the inner cavities of the upper and lower secondary sliding barrels 9-2 and 9-4 to play the roles of circumferential positioning and guiding, and the middle sliding barrel 9-3 can relatively slide along the sliding chute directions of the inner cavities of the upper and lower secondary sliding barrels 9-2 and 9-4. The main telescopic tube 9 coaxially connects and fixes the positioning holes on the bosses of the upper and lower stage sliding cylinders 9-1 and 9-5 and the threaded holes at the bottoms of the upper and lower iron cores between the upper iron core 2 and the lower iron core 6 through screws.
As a preferred technical scheme, the upper stage sliding barrel 9-1 and the lower stage sliding barrel 9-5 have the same size, and the bottom of the upper stage sliding barrel is provided with a hollow baffle; the upper secondary slide cylinder 9-2 and the lower secondary slide cylinder 9-4 have the same size, the diameter is smaller than that of the primary slide cylinder, and the bottom is also provided with a hollow baffle; the diameter of the middle sliding barrel 9-3 is smaller than that of the second sliding barrel; the heights of the upper first-stage sliding barrel 9-1, the upper second-stage sliding barrel 9-2, the middle sliding barrel 9-3, the lower first-stage sliding barrel 9-5 and the lower second-stage sliding barrel 9-4 are the same. When the main extension tube 9 is folded to the limit state, the upper first-stage sliding cylinder 9-1 is contacted with the bottom of the lower first-stage sliding cylinder 9-5, and the upper second-stage sliding cylinder 9-2, the middle sliding cylinder 9-3 and the lower second-stage sliding cylinder 9-4 are all wrapped in the cavity of the first-stage sliding cylinder. The difference between the stroke of the main telescopic pipe 9 and the limit compression length of the spring is not less than the stroke of the accelerator pedal 104 and the brake pedal 105 along the axial direction of the main telescopic pipe.
As shown in FIGS. 6 and 7, the side extension tube 10 includes a first outer tube 10-1, an intermediate rod 10-2, and a second outer tube 10-3. Two ends of the middle rod 10-2 respectively extend into the first outer sleeve 10-1 and the second outer sleeve 10-3, and separation limiting is avoided through bosses at the ends. The inner cavities of the first outer sleeve 10-1 and the second outer sleeve 10-3 are both provided with two sliding grooves, the outer ends of the two sliding grooves are provided with bosses, and side extension tube positioning holes 10-5 are arranged on the bosses. Two small bulges are distributed on the periphery of the top flange and the bottom flange of the middle rod 10-2 and are respectively contacted with two chutes of the inner cavities of the first outer sleeve 10-1 and the second outer sleeve 10-3 to play the roles of circumferential positioning and guiding, and the middle rod 10-2 can relatively slide along the chutes of the inner cavities of the first outer sleeve 10-1 and the second outer sleeve 10-3. The side telescopic tubes 10 are coaxial with the positioning holes on the bosses of the first outer sleeve 10-1 and the second outer sleeve 10-3 and the threaded holes at the bottoms of the upper iron core and the lower iron core and are fixedly connected between the upper iron core 2 and the lower iron core 6 through screws, and the two side telescopic tubes 10 are distributed at two sides of the main telescopic tube 9 to play a role in enhancing the rigidity of the whole structure.
As a preferred technical scheme, a first outer sleeve 10-1 and a second outer sleeve 10-3 in the side extension tube 10 have the same size, the diameter of the first outer sleeve is smaller than that of the second-stage sliding cylinder, and a hollow baffle is arranged at the bottom of the first outer sleeve; the diameter of the intermediate rod 10-2 is smaller than that of the outer sleeve, and the height of the intermediate rod 10-2 is more than twice of that of the outer sleeve. The stroke of the side telescopic tube 10 is equal to that of the main telescopic tube 9.
The active brake electromagnetic tube 106, the ultrasonic displacement sensor in the accelerator mistaken-stepping prevention electromagnetic tube 103, the upper magnet exciting coil 3, the lower magnet exciting coil 7, the front-view camera, the pedal bottom camera and the safety button are all connected with the controller. The rubber dustproof sleeve 11 wraps the electromagnetic tube to play a dustproof and waterproof role. The return spring 12 is less stiff and has a smaller ultimate compression length. The accelerator pedal 104 is a suspension type accelerator pedal.
The active braking method of the accelerator mistaken stepping prevention and active braking system comprises the following specific steps:
step one, a front-view camera detects whether an obstacle appears in a safety distance in front of a vehicle; if the obstacle in front of the vehicle is detected; meanwhile, the camera at the bottom of the pedal detects that the accelerator pedal 104 is stepped on, and when the controller detects that the change rate of the displacement data of the ultrasonic displacement sensor, namely the speed of the stepped on pedal is greater than the preset mistaken stepping speed; the accelerator is considered to be stepped on by mistake.
And step two, when the accelerator is detected to be stepped on by mistake, the upper magnet exciting coil 3 and the lower magnet exciting coil 7 in the electromagnetic tube 103 for preventing the accelerator from being stepped on by mistake are electrified, so that repulsive force is generated between the upper iron core 2 and the lower iron core 6, the stepping force of a driver on the accelerator pedal 104 is resisted, the accelerator pedal 104 is prevented from further displacing, even the accelerator pedal 104 is restored to the original position, and the engine cannot be accelerated at the moment.
Meanwhile, the upper magnet exciting coil 3 and the lower magnet exciting coil 7 in the active brake electromagnetic tube 106 are electrified, so that attraction is generated between the upper iron core 2 and the lower iron core 6, active flexible brake is performed, the vehicle is not directly braked and stopped, the size of the electrified current of the electromagnetic tube is controlled in real time according to the movement speed and the position information of the obstacle in front of the vehicle, the displacement of the brake pedal 105 is adjusted, and different brake force is realized, so that the comfort and the driving safety are improved.
And step three, after the obstacle in front of the vehicle disappears, or the driver shifts gears, or the safety button is pressed, the accelerator mistaken-stepping state disappears, the active brake solenoid 106 and the accelerator mistaken-stepping prevention solenoid 103 are both powered off, and the accelerator mistaken-stepping prevention solenoid 103 and the active brake solenoid 106 are respectively restored under the action of the corresponding return springs 12.
In the embodiment, the software part of the controller adopts negative feedback closed-loop control, the displacement of the pedal detected by the ultrasonic displacement sensor is used as feedback quantity, and the magnitude of the electrifying current of the electromagnetic tube is controlled by a PID control algorithm, so that the displacement of the pedal can still be ensured to be near a target value under different treading forces. This allows for precise control of the position of the accelerator pedal 104 and the brake pedal 105.
The safety button in this example is mounted on the steering wheel and can terminate the control of the controller on the pedal cylinder pin 106 when the mistaken stepping action is identified, and when the driver finds that the mistaken stepping action is identified by mistake or the driver finds that the mistaken stepping action is too aggressive to be handled by the system, the driver can take over the accelerator pedal 104 and the brake pedal 105 again after pressing the safety button.
Claims (9)
1. The utility model provides a throttle is prevented mistake and is stepped on and initiative braking system which characterized in that: the accelerator pedal anti-misstep accelerator pedal comprises an active brake electromagnetic tube (106), an accelerator anti-misstep electromagnetic tube (103), a bottom plate, a controller, a forward-looking camera, a pedal bottom camera and a safety button; the front-view camera is arranged on the vehicle; the bottom plate is fixed at the bottom of the cockpit; two ends of the accelerator anti-misstep electromagnetic tube (103) are respectively hinged with the bottom plate and the accelerator pedal (104); two ends of the active braking electromagnetic tube (106) are respectively hinged with the bottom plate and the brake pedal (105); the active brake electromagnetic tube (106) and the accelerator mistaken-stepping prevention electromagnetic tube (103) are identical in structure and respectively comprise an upper lifting lug (1), an upper iron core (2), an upper magnet exciting coil (3), a lower lifting lug (5), a lower iron core (6), a lower magnet exciting coil (7), a main telescopic tube (9), a return spring (12) and a rubber dustproof sleeve (11); the upper iron core (2) and the lower iron core (6) are respectively connected with two ends of the inner cavity of the rubber dustproof sleeve (11) in a sliding manner; the inner ends of the upper lifting lug (1) and the lower lifting lug (5) are respectively fixed with the lower iron core (6) of the upper iron core (2); the upper magnet exciting coil (3) is wound on the upper iron core (2); the lower excitation coil (7) is wound on the lower iron core (6); in the accelerator mistaken-stepping prevention electromagnetic tube (103), when the upper excitation coil (3) and the lower excitation coil (7) are electrified, repulsion force is generated between the upper iron core (2) and the lower iron core (6); in the active braking electromagnetic tube (106), when the upper excitation coil (3) and the lower excitation coil (7) are electrified, suction force is generated between the upper iron core (2) and the lower iron core (6); the main telescopic pipe (9) is arranged at the central position in the rubber dustproof sleeve (11), and two ends of the main telescopic pipe are respectively fixed with the lower iron core (6) of the upper iron core (2); the main telescopic pipe (9) is provided with elastic force for recovering to an extension state by a return spring (12); first adjusting sliding grooves are formed in the middle-lower positions of the accelerator pedal (104) and the brake pedal (105); the first adjusting chutes on the accelerator pedal (104) and the brake pedal (105) are respectively provided with an upper connecting piece (102); the upper connecting piece (102) can be fixed with different positions of the first adjusting chute; an upper connecting piece (102) on an accelerator pedal (104) and a brake pedal (105), an active brake solenoid (106) and an upper lifting lug (1) in an accelerator anti-misstep solenoid (103) form a rotating pair.
2. The system of claim 1, wherein the system comprises: the active brake electromagnetic tube (106) and the accelerator mistaken-stepping prevention electromagnetic tube (103) both comprise ultrasonic displacement sensors (13); the ultrasonic displacement sensor (13) comprises an ultrasonic transmitting end (13-1) and an ultrasonic receiving end (13-2); the ultrasonic transmitting end (13-1) and the ultrasonic receiving end (13-2) are both arranged at the center of the inner side surface of the lower iron core (6) and face the upper iron core (2).
3. The system of claim 1, wherein the system comprises: the safety button is also included; the safety button is arranged on the steering wheel; when the safety button is pressed down, the active brake solenoid (106) and the accelerator mistaken-stepping prevention solenoid (103) are powered off.
4. The system of claim 1, wherein the system comprises: the camera is installed in the bottom in vehicle cockpit under the footboard bottom, towards accelerator pedal (104) and brake pedal (105), and has the light filling lamp.
5. The system of claim 1, wherein the system comprises: the front-view camera adopts a binocular camera and is arranged on the front side of the interior rearview mirror.
6. The system of claim 1, wherein the system comprises: two sides of the top surface of the bottom plate are both provided with second adjusting sliding grooves (108-1); the two connecting sliding blocks (107) are respectively arranged in the two second adjusting sliding grooves (108-1) of the bottom plate; the connecting slide block (107) can be fixed at different positions of the second adjusting chute (108-1); the two connecting sliding blocks (107), the active brake electromagnetic tube (106) and the accelerator mistakenly-stepping prevention electromagnetic tube (103) inner lower lifting lug form a revolute pair.
7. The system of claim 1, wherein the system comprises: the main telescopic pipe (9) comprises a return spring (12) and an upper first-stage sliding cylinder (9-1), an upper second-stage sliding cylinder (9-2), a middle sliding cylinder (9-3), a lower second-stage sliding cylinder (9-4) and a lower first-stage sliding cylinder (9-5) which are sequentially connected; the diameters of one ends of the upper first-stage sliding cylinder (9-1), the upper second-stage sliding cylinder (9-2) and the middle sliding cylinder (9-3) are reduced from large to small and are sleeved in sequence; the diameters of the other ends of the next-stage sliding cylinder (9-5), the next-stage sliding cylinder (9-4) and the middle sliding cylinder (9-3) are reduced from large to small and are sleeved in sequence; the return spring (12) is sleeved on the upper secondary slide cylinder (9-2), the middle slide cylinder (9-3) and the lower secondary slide cylinder (9-4), and two ends of the return spring respectively abut against the inner end faces of the upper primary slide cylinder (9-1) and the lower primary slide cylinder (9-5).
8. The system of claim 1, wherein the system comprises: a plurality of side extension tubes (10) are also arranged in the rubber dustproof sleeve (11); the extension tubes (10) at all sides are uniformly distributed along the circumferential direction of the main extension tube (9); two ends of the side extension tube (10) are respectively fixed with the upper iron core (2) and the lower iron core (6).
9. The active braking method of the accelerator stepping prevention and active braking system according to claim 1, characterized in that:
step one, a front-view camera detects whether an obstacle appears in a safety distance in front of a vehicle; if the obstacle in front of the vehicle is detected; meanwhile, detecting that the accelerator pedal (104) is stepped on, wherein the stepping speed of the accelerator pedal (104) is greater than the preset mistaken stepping speed; considering that the accelerator is stepped on by mistake;
step two, when the accelerator is detected to be stepped on by mistake, an upper magnet exciting coil (3) and a lower magnet exciting coil (7) in an accelerator mistakenly-stepping electromagnetic tube (103) are electrified, so that repulsive force is generated between an upper iron core (2) and a lower iron core (6) to resist the stepping force of a driver on an accelerator pedal (104); meanwhile, an upper magnet exciting coil (3) and a lower magnet exciting coil (7) in the active braking electromagnetic tube (106) are electrified, so that attraction force is generated between the upper iron core (2) and the lower iron core (6), and active braking is realized;
and step three, after the obstacle in front of the vehicle disappears or the safety button is pressed, the accelerator mistaken-stepping state is considered to disappear, and the active braking electromagnetic tube (106) and the accelerator mistaken-stepping prevention electromagnetic tube (103) are powered off.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011580784.1A CN112622615B (en) | 2020-12-28 | 2020-12-28 | Accelerator mistaken-stepping prevention and active braking system and active braking method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011580784.1A CN112622615B (en) | 2020-12-28 | 2020-12-28 | Accelerator mistaken-stepping prevention and active braking system and active braking method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112622615A CN112622615A (en) | 2021-04-09 |
| CN112622615B true CN112622615B (en) | 2022-02-01 |
Family
ID=75325586
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011580784.1A Active CN112622615B (en) | 2020-12-28 | 2020-12-28 | Accelerator mistaken-stepping prevention and active braking system and active braking method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112622615B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114103635A (en) * | 2021-12-08 | 2022-03-01 | 安徽江淮汽车集团股份有限公司 | Method and system for preventing vehicle from stepping on accelerator mistakenly |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101357628A (en) * | 2008-09-10 | 2009-02-04 | 朱武学 | Brake miss-stamping error correction device |
| CN101362440A (en) * | 2007-08-09 | 2009-02-11 | 刘新广 | Magnetic energy car |
| CN101712282A (en) * | 2008-10-06 | 2010-05-26 | 黄少华 | Device for preventing stepping on accelerator by mistake |
Family Cites Families (23)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101143587A (en) * | 2007-08-10 | 2008-03-19 | 奇瑞汽车有限公司 | Throttle control assembly for automobile |
| CN102424002A (en) * | 2011-05-24 | 2012-04-25 | 刘铁华 | Device for preventing mistaken pedaling of accelerator pedal |
| CN202669488U (en) * | 2012-05-28 | 2013-01-16 | 韦广用 | Automatic control device for preventing misoperation on accelerator of automobile |
| CN103050216A (en) * | 2012-12-31 | 2013-04-17 | 东南大学 | Electromagnetic actuator for active noise control for amorphous alloy transformers |
| CN203126532U (en) * | 2013-02-05 | 2013-08-14 | 长安大学 | Error correcting device for mistake of stepping on accelerator during urgent braking |
| DE102014106959A1 (en) * | 2013-05-20 | 2014-11-20 | Kyung Chang Industrial Co., Ltd. | A sudden acceleration preventing electronic accelerator pedal and method thereof |
| CN103625287A (en) * | 2013-11-11 | 2014-03-12 | 天津江湾科技有限公司 | Device and method for preventing driver from stepping on accelerator instead of brake by mistake |
| KR101526723B1 (en) * | 2013-12-03 | 2015-06-05 | 현대자동차주식회사 | Position adjustable pedal |
| CN104753303B (en) * | 2013-12-31 | 2018-10-02 | 博立码杰通讯(深圳)有限公司 | Driving device and device manufacture method |
| CN104260639A (en) * | 2014-10-21 | 2015-01-07 | 吉林大学 | Device for automatically converting into emergency brake when driver mistakes accelerator for brake to step on |
| CN204526834U (en) * | 2015-01-13 | 2015-08-05 | 三明学院 | A kind of preventing to touch on the brake the safety device caused the accident because of mistake |
| CN204726234U (en) * | 2015-06-25 | 2015-10-28 | 厦门理工学院 | A kind of automobile-used Anti-mis-stepping pedal system |
| CN106915253B (en) * | 2015-12-24 | 2021-10-19 | 富泰华工业（深圳）有限公司 | Device for preventing mistaken stepping on accelerator during braking |
| CN105946589B (en) * | 2016-05-12 | 2018-04-20 | 杭州电子科技大学 | Wheel hub motor braking system of electric car and Brake energy recovery control method |
| JP6141503B1 (en) * | 2016-12-26 | 2017-06-07 | 和生 常深 | Pedal device |
| CN109835313B (en) * | 2017-11-24 | 2021-09-03 | 比亚迪股份有限公司 | Vehicle false-stepping prevention device, method and system |
| CN109305010B (en) * | 2018-10-30 | 2020-05-19 | 西南交通大学 | Permanent magnet electromagnetic coupling control energy-regenerative suspension actuator |
| CN209409817U (en) * | 2019-01-09 | 2019-09-20 | 北京理工华创电动车技术有限公司 | A kind of control device for automobile accelerator |
| CN109760513A (en) * | 2019-03-01 | 2019-05-17 | 大连理工大学 | A kind of Anti-false stepping system for automobile throttle and its working method |
| CN110228454A (en) * | 2019-06-18 | 2019-09-13 | 威马智慧出行科技（上海）有限公司 | Automotive throttle prevents from accidentally stepping on method, electronic equipment and automobile |
| CN110239364A (en) * | 2019-07-10 | 2019-09-17 | 海汇新能源汽车有限公司 | A kind of electric car low speed anticollision control system and its control method |
| CN111301163B (en) * | 2020-02-18 | 2021-07-20 | 江苏大学 | Anti-misstep double-accelerator pedal system and control method thereof |
| CN111845340A (en) * | 2020-08-19 | 2020-10-30 | 覃柔美 | Throttle control device |
-
2020
- 2020-12-28 CN CN202011580784.1A patent/CN112622615B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101362440A (en) * | 2007-08-09 | 2009-02-11 | 刘新广 | Magnetic energy car |
| CN101357628A (en) * | 2008-09-10 | 2009-02-04 | 朱武学 | Brake miss-stamping error correction device |
| CN101712282A (en) * | 2008-10-06 | 2010-05-26 | 黄少华 | Device for preventing stepping on accelerator by mistake |
Also Published As
| Publication number | Publication date |
|---|---|
| CN112622615A (en) | 2021-04-09 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US6324457B1 (en) | Apparatus for controlling run of a car, and car using the apparatus | |
| US8991940B2 (en) | Electrically driven brake booster | |
| US20170361851A1 (en) | Vehicle control device | |
| US9308897B2 (en) | Brake control device | |
| CN112622615B (en) | Accelerator mistaken-stepping prevention and active braking system and active braking method thereof | |
| GB2484584A (en) | Brake actuating system having a spring between an actuating element and an ouput piston | |
| KR101961511B1 (en) | Differential travel sensor for a brake system of a vehicle, and method for determining a differential travel | |
| US4918424A (en) | Two-stage brake light system | |
| BR112020006958A2 (en) | saddle-type vehicle | |
| JP2016524560A (en) | Accelerator system for preventing vehicle collision and stepping errors by controlling the motor rotation direction with a relay | |
| CN113840760A (en) | Adjustable brake lever sensor system | |
| CN111873798B (en) | Device and method for remedying mistaken stepping of accelerator pedal of automobile | |
| JP2013252849A (en) | Brake system simulator device for motorcycle, method for attaching brake system to motorcycle, and method for braking motorcycle | |
| CN202703556U (en) | Two-in-one car pedal | |
| CN103950384A (en) | Throttle device for automobile | |
| CN203957888U (en) | A kind of gas device | |
| CN220430120U (en) | Braking device and vehicle | |
| CN201029054Y (en) | Vehicle throttle safety controller | |
| CN110027527A (en) | Pedal simulator and line control brake system, vehicle with it | |
| CN112896116B (en) | Electromagnetic regulation type intelligent pedal mechanism for braking feeling of electric automobile | |
| CN208324888U (en) | Flat accelerator pedal | |
| CN103213501B (en) | A kind of automobile oil circuit clutch | |
| CN117962829A (en) | Design method of brake boosting assembly and brake boosting assembly | |
| CN110027524A (en) | The pedal sense simulator of vehicle and vehicle with it | |
| KR20230010113A (en) | Brake system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |