CN100584651C - Emergency braking device anti-misstep device - Google Patents
Emergency braking device anti-misstep device Download PDFInfo
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- CN100584651C CN100584651C CN200710042893A CN200710042893A CN100584651C CN 100584651 C CN100584651 C CN 100584651C CN 200710042893 A CN200710042893 A CN 200710042893A CN 200710042893 A CN200710042893 A CN 200710042893A CN 100584651 C CN100584651 C CN 100584651C
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Abstract
Disclosed is a mis-tread preventing device for emergency stop, belong to autocontrol technical field. The input port of a signal processor is connected to the output port of pressure difference electrical signal of a controllable magnet valve; the output port of the signal processor is connected to the input port of a controller; the two output ports of the controller are connected to the control pole of two electronic switches; the anode and the cathode of the first electronic switch are connected in series in a DC power supply loop for the controllable magnet valve; the controllable magnet valve is disposed at the upper range of the foot pedal accelerograph in a gasoline pipe of the automobile. Gasoline supplied to the automobile first goes through the controllable magnet valve, then passes the foot pedal accelerograph and at last goes to the cylinder of the engine. The anode and the cathode of the second electronic switch are connected in series in a DC power supply loop for an electricity powered handspike; the top of the electricity powered handspike is mechanically connected to the force arm at the lower part of the pedal rod of an arrester in a mode that the handspike and the arrester can rotate in a plane within 90 degree. The invention can prevent accidents and safeguard the safety of people as well as transportation vehicles.
Description
Technical field
The present invention relates to the vehicle traveling process safety guard in a kind of automatic control technology field, prevent the emergency braking device anti-misstep device of driver's mis-accelerator pressing when being specifically related to a kind of automobile urgent brake car.
Background technology
Along with world economy and science and technology development, when automobile was popularized day by day, frequent accidents took place.Lead to grave accident person because of the maloperation of automobile driver not within minority, and this just needs to rely on the raising of relevant art level to be avoided.Wherein, automobile is at driving process, when extraordinary circumstances appear suddenly in the place ahead, as: personnel cross road, front vehicles sudden stop etc. suddenly, because driver nervous at heart or react too late, therefore should carry out emergency brake, but step on throttle by mistake, cause vehicle to thrust into or the grave accident of car crash such as vehicle rear-end collision.Although the science and technology that grows up around auto-industry so far is quite flourishing in the world,, up to the present, still there is not the emergency braking device anti-misstep automatic control technology device of advanced technology and technical maturity.
Find through literature search prior art, the Chinese patent application patent No.: 200520036595.2, the name utility model that is called " the anti-error automobile braking device of stepping on " discloses a kind of anti-error automobile braking device of stepping on, this device is made of electromagnetic inductor, controller, drg, phonetic alarm device, wherein electromagnetic inductor is surveyed the mis-accelerator pressing actuating signal; Controller is accepted the maloperation signal that electromagnetic inductor produces, and this signal is transferred to drg through amplification, time delay circuit; Drg is accepted the controller transmission signals, starts braking automobile.The utility model is when running into emergency brake, if mis-accelerator pressing, drg can obtain signal and in time start automobile brake system realizing brake, thereby guarantee the safety of automobile.But the maximum technological deficiency that above-mentioned technology exists is that the sensing of " surveying the mis-accelerator pressing actuating signal " obtains by " electromagnetic inductor ".This is a kind of indirect sensing to the throttle opening, only be that sensing is carried out in the displacement of Das Gaspedal, and there is not the size of the actual oily flow of direct perception throttle, therefore, the engineering reliability of this sensing " mis-accelerator pressing action " is lower, in case owing to the variation in pedal machines gap causes the error of " electromagnetic inductor " output signal, the technique effect estimated of out of reach then.
Summary of the invention
The objective of the invention is to overcome deficiency of the prior art, a kind of emergency braking device anti-misstep device is proposed, make it can pass through the directly oily flow actual change situation of induction throttle, signal according to sensing output, signal processor is judged the mis-accelerator pressing behavior when whether driver's action belongs to sudden stop this moment real-time and accurately, in case confirm driver's mis-accelerator pressing, meeting be closed oil circuit automatically immediately and be braked in real time by controller, therefore, can very avoid the driver to lead to the generation of major traffic accidents because of mis-accelerator pressing reliably.
The present invention is achieved by the following technical solutions, the present invention includes: signal processor, controller, but observing and controlling electromagnetic valve, first electronic switch, second electronic switch, electric pushrod, drg, but the input port of signal processor is connected with the differential pressure electrical signal mouth of observing and controlling electromagnetic valve, the output port of signal processor is connected to the input port of controller, first output port of controller is connected to first electronic switch control utmost point, second output port of controller is connected to second electronic switch control utmost point, but first electronic switch Yang Yin the two poles of the earth are serially connected on the direct current power supply loop of observing and controlling electromagnetic valve, but the observing and controlling electromagnetic valve is installed on the upstream side of foot throttle in the automobile oil feed line, but make the automobile fuel feeding at first by just passing to engine cylinder by foot throttle again behind the observing and controlling electromagnetic valve, second electronic switch Yang Yin the two poles of the earth are serially connected on the direct current power supply loop of electric pushrod, and the push rod top of electric pushrod and the footbrake bar lower end arm of force are formed on rotating mechanical connection in 90 ° of Plane Angle scopes.
But described observing and controlling electromagnetic valve, comprise: solenoid valve body, valve, compression spring, electromagnet, the pressure guide hole pipe, differential pressure pick-up, soft pressing plate of plasticity and cable interface, valve wherein, compression spring, electromagnet, differential pressure pick-up, soft pressing plate of plasticity and cable interface are distributed in solenoid valve body inside, press serial arrangement from bottom to up, valve is positioned at solenoid valve body in-to-in center, compression spring is enclosed within on the cylinder on valve top, so that being produced a prestress, valve is in normally open by the electromagnetic valve valve, electromagnet is positioned at directly over this cylinder, and it is gapped with this cylinder, the pressure input termination of pressure guide hole pipe is positioned on the tube wall of solenoid valve body in-to-in fluid passage, the pressure output end head of pressure guide hole pipe is connected with the pressure input end of differential pressure pick-up, the fluid differential pressure electric signal of differential pressure pick-up is exported by output lead, the fluid differential pressure electric signal output lead that is subjected to electric coil input lead and differential pressure pick-up of electromagnet is connected with cable interface, and is connected with signal processor with solenoid valve body controller outward respectively by it.
Described solenoid valve body is a kind of housing structure, inner hollow, there are upstream line joint and downstream line joint in exterior both sides, on solenoid valve body relies on, the outside thread of downstream line joint is guaranteed with last, the reliable connection of downstream line, upstream line joint and downstream line joint and valve are through-flow, and the duct forms the fluid passage, the solenoid valve body bottom is furnished with the loading and unloading that a bottom blind nut is convenient to valve and compression spring, part top and bottom two parts in the solenoid valve body, electromagnet is placed on top from the bottom to top successively, differential pressure pick-up, soft pressing plate of plasticity and cable interface, electromagnet is subjected to the electric signal output line of the lead-in wire of electric coil and differential pressure pick-up to pass wire guide on the soft pressing plate of plasticity respectively and the pin in the cable interface welds, cable interface and solenoid valve body are by being threaded, and the bottom is placed compression spring from top to bottom successively, valve and bottom blind nut.Solenoid valve body in-to-in geometric configuration has guaranteed that valve radially can smooth-goingly move with the flow area that changes valve from high point to minimum, or open to maximum from minimum, valve is the movement parts in the solenoid valve body, and compression spring is half movement parts, and other is the stationary fixing part.
Described valve is the step column structure, top is cylinder, the bottom is a cuboid, be axially arranged with a through-flow duct at cuboid over against liquid stream, this through-flow duct can be cylindrical-conical, it goes out port radius less than entry radius, entry radius is consistent with the upstream line joint radius of solenoid valve body, by the convergent shape in the through-flow duct of taper shape to strengthen the drag effect of fluid flow, therefore when fluid is flowed through this through-flow duct of taper shape, thereon, the downstream can present tangible differential pressure of flow, when valve was in opening, convection cell formed the flow area of standard-sized sheet, as long as move up and down the valve upper cylinder, can change the valve flow area, until closing; Utilize the step column structure of valve, the prestress that the suit compression spring makes this cylinder utilization be compressed spring on the valve upper cylinder makes valve be in normally open, in case electromagnet is subjected to, the electromagnetic force that electromagnet produces just spurs the valve upper cylinder, the thrust that overcomes compression spring makes valve move towards the direction of closing, until closing; Dead electricity again after electromagnet is subjected to electricity, the electromagnetic force of electromagnet will disappear, this moment valve under the thrust of compression spring, will move towards the direction of opening, logical until standard-sized sheet.
Described electromagnet is by formed by electric coil and soft magnetic core two parts, be installed on the top of valve, and keep certain passive distance with the valve upper cylinder, be enclosed within on the soft magnetic core by electric coil, when being subjected to electric coil to be subjected to electricity, under the effect of electromagnetic field, soft magnetic core produces magnetic induction and forms magnetic force and overcomes the ferromagnet pulling of the thrust of spring with valve, and then valve turned down gradually, until closing; Otherwise, the valve upper cylinder is under the thrust of compression spring, valve is moved towards the direction of opening, until open-minded fully, powered by power supply by electric coil, when the serial connection hard switching is controlled its conducting or turn-offed, be subjected to electric coil that two kinds of mode of operations are only arranged, promptly, be subjected to the electric current maximum, no power is called switch working state, controls its conducting or shutoff by the serial connection electronic switching device, then can utilize the soft of electronic switching device to open and soft turn-off function, realization is subjected to the continuous variation of electric coil circulating current, can form the mild of flow and regulate continuously, the water hammer effect that produces in the time of can also avoiding the sudden change of electromagnetic valve flow area.
Described pressure guide hole pipe is the aperture pipe that two diameters are 1mm, play a part conducting fluid pressure, wherein one is upstream pressure guide hole pipe, its pressure input termination is positioned at the upstream, fluid passage near on the tube wall of valve inlet, another root is a downstream pressure guide hole pipe, its pressure input termination is positioned at the downstream, fluid passage near on the tube wall of valve export, on, the pressure input termination of downstream pressure guide hole pipe connects the pressure input end of differential pressure pick-up respectively, the fluid differential pressure electric signal of differential pressure pick-up is exported by output lead, when having fluid to pass through in the valve, because the convergent shape in the through-flow duct of valve causes throttling effect, make and produce different fluid pressures in the import and export of valve, transport to the input end of differential pressure pick-up through the conduction of pressure guide hole pipe, differential pressure end instr conversion in differential pressure pick-up, convert the fluid differential pressure signal to the fluid differential pressure electric signal,, handle for subsequent module or device again through output lead output.
The soft pressing plate of described plasticity, both utilized its insulation characterisitic well insulated each other by the lead-in wire of electric coil and the electric signal output line of differential pressure pick-up, fastening force the fixing of utilizing its soft plasticity to be threaded again with assurance electromagnetic valve internal components by cable interface to guarantee the electromagnet that therefrom passes.
Described cable interface utilizes connecting thread and solenoid valve body top leak-tight joint, and all attached numbering of signal wire (SW) wherein is so that to carry out signal by the equipment beyond communication cable and the present invention mutual.
Described bottom blind nut can guarantee the convenience of valve and compression spring loading and unloading, also is convenient to the cleaning of valve internal, posts leak-proof gasket on the blind nut of bottom, in case liquid seepage from here.
Described electric pushrod, maximum thrust reaches 300N, and range can reach 130mm, and the 24V/12V direct current permanent magnet motor drives, the full load current 2A during 24V, speed of response 27～50mm/s.
Described drg is transformed original foot brake, and original weighing arm that extends does not influence original service brake function as the thrust arm of electric pushrod.
Among the present invention, but the input port of described signal processor receives the fluid differential pressure electric signal of observing and controlling electromagnetic valve output, according to the incoming signal that the receives calculating of making a strategic decision, when automobile is in motoring condition, but the input port of signal processor can receive the fluid differential pressure electric signal of observing and controlling electromagnetic valve output in real time, and judge the driver by the rate of change that calculates the oil circuit flow that obtains and whether stepped on throttle in the sudden stop mistiming, whether therefore can make a policy needs to send braking instruction to controller, signal processor is judged through decision-making, in case judge driver's mis-accelerator pressing, then export braking instruction by output port to controller immediately, controller is exported trigging pulse by first output port to the control utmost point of first electronic switch immediately according to this instruction, first electronic switch is open-minded thereupon, but the electric coil that is subjected to of observing and controlling electromagnetic valve is subjected to, but make the valve closing of the observing and controlling electromagnetic valve that is in normally open immediately, meanwhile, controller is by the control utmost point output start pulse signal of second output port to second electronic switch, make this electronic switch open-minded, start electric pushrod propelling vehicle brake equipment immediately and make automobile automatic brake.
The present invention is during to the repacking of existing automobile or redesign, get final product but only need set up observing and controlling electromagnetic valve of the present invention and install electric pushrod additional at the upstream side of automobile oil feed line pin step on the accelerator at footbrake plate weighing arm end, remaining signal processor, controller and electronic switch can be made into incorporate electronic module by cable with above-mentioned both be connected, therefore very simple and easy to do.
After automobile adopts the technology of the present invention, obviously promote the automatic technology level of automobile, the safety factor of driving improves, and its economic value added rises thereupon.Confirm according to measured result: its sudden stop prevents the rate of accuracy reached to 100% that mistake is stepped on, response time is less than 10ms, speed per hour 80km when sudden stop occurring calculates, and whole process finishes from the SELF CL oil circuit to the automobile autobrake, automobile because of sluggish and inertia generation coasting distance less than 30cm.Obviously, the present invention can effectively avoid the generation of major traffic accidents.
Description of drawings
Fig. 1 is an embodiment of the invention system chart
But Fig. 2 is an embodiment of the invention observing and controlling electromagnetic valve inner structure scheme drawing
Fig. 3 is repacking of embodiment of the invention footbrake plate and electric pushrod installation site scheme drawing
The specific embodiment
Below in conjunction with accompanying drawing embodiments of the invention are elaborated: present embodiment has provided detailed embodiment and process being to implement under the prerequisite with the technical solution of the present invention, but protection scope of the present invention is not limited to following embodiment.
As illustrated in fig. 1 and 2, present embodiment comprises: but signal processor 1, controller 2 observing and controlling electromagnetic valves 3, first electronic switch 4, second electronic switch 5, electric pushrod 6, drg 7.But the input port of signal processor 1 is connected with the differential pressure electrical signal mouth of observing and controlling electromagnetic valve 3, the output port of signal processor 1 is connected to the input port of controller 2, first output port of controller 2 is connected to first electronic switch, the 4 control utmost points, second output port of controller 2 is connected to second electronic switch, the 5 control utmost points, but first electronic switch, 4 Yang Yin the two poles of the earth are serially connected on the direct current power supply loop of observing and controlling electromagnetic valve 3, but observing and controlling electromagnetic valve 3 is arranged at the upstream side of foot throttle in the automobile oil feed line, but the automobile fuel feeding is at first by just passing to engine cylinder by foot throttle again behind the observing and controlling electromagnetic valve 3, second electronic switch, 5 Yang Yin the two poles of the earth are serially connected on the direct current power supply loop of electric pushrod 6, and the push rod top of electric pushrod 6 and the drg 7 foot-driven lever lower end arm of forces are formed on rotating mechanical connection in 90 ° of Plane Angle scopes.
When automobile is in motoring condition, but signal processor 1 receives the oil circuit fluid differential pressure electric signal that is sent by observing and controlling electromagnetic valve 3 always in real time, calculate the transient flow value of oil circuit according to the fluid differential pressure electric signal, and in real time the flow of current flow and previous moment is compared, exceed the threshold value that presets in case find the transient changing rate of flow, illustrate that a kind of mal ground has appearred in the driver, sharply and fiercely trample the throttle situation, promptly appear to have stepped on throttle under the situation of sudden stop by mistake, so signal processor 1 sends braking instruction to controller 2 immediately.Controller 2 is exported trigging pulse by first output port to the control utmost point of first electronic switch 4 immediately according to this instruction; first electronic switch 4 is open-minded thereupon; but the electric coil 18 that is subjected to of observing and controlling electromagnetic valve 3 is subjected to; but the valve 9 of the observing and controlling electromagnetic valve 3 that is in normally open is closed; therefore turn-offed the oil circuit of automobile; meanwhile; controller 2 is by the control utmost point output start pulse signal of second output port to second electronic switch 5; make this electronic switch open-minded; start electric pushrod 6 propelling vehicle drgs 7 immediately and make automobile automatic brake; avoid contingent major traffic accidents, also automotive engine has been played the certain protection effect simultaneously.
As shown in Figure 2, but the observing and controlling electromagnetic valve 3 in the present embodiment comprises: solenoid valve body 8, valve 9, compression spring 10, electromagnet 11, upstream pressure guide hole pipe 12, downstream pressure guide hole pipe 13, differential pressure pick-up 14, the soft pressing plate 15 of plasticity, cable interface 16, solenoid valve body 8 is a kind of housing structures, its inner hollow, there are upstream line joint 21 and downstream line joint 22 in the exterior left and right sides, the two ends, fluid passage by they and last, downstream line connects, valve 9, compression spring 10, electromagnet 11, differential pressure pick-up 14, the soft pressing plate 15 of plasticity and cable interface 16 by serial arrangement from bottom to up in the inside of solenoid valve body, the bottom of solenoid valve body 8 is furnished with a bottom blind nut 23, be convenient to the loading and unloading of valve 9 and compression spring 10, valve 9 is step cylinder mechanisms, be in the center of solenoid valve body 8, its top is cylinder, the bottom is a cuboid, compression spring 10 is enclosed within on the cylinder on valve 9 tops and is in normally open so that valve 9 is produced a prestress by valve 9, electromagnet 11 is placed on valve 9 tops, keep a determining deviation with above-mentioned cylinder, the pressure input termination of upstream pressure guide hole pipe 12 is positioned at upstream, solenoid valve body in-to-in fluid passage near on the tube wall of valve inlet, the pressure input termination of downstream pressure guide hole pipe 13 then is positioned at downstream, above-mentioned fluid passage near on the tube wall of valve export, on, downstream pressure guide hole pipe 12,13 pressure output end head then is connected to the pressure input end of differential pressure pick-up 14 respectively, the fluid differential pressure electric signal of differential pressure pick-up 14 is exported by output lead, and the fluid differential pressure electric signal output lead 20 that is subjected to electric coil 18 input leads 19 and differential pressure pick-up 14 of electromagnet 11 is connected with signal processor with solenoid valve body controller outward respectively by cable interface 16.
But the solenoid valve body 8 of observing and controlling electromagnetic valve 3 relies on the fluid passage in the present embodiment, downstream line joint 21,22 outside thread is guaranteed with last, the reliable connection of downstream line, its inner must branch top and bottom two parts to lay parts, electromagnet 11 is placed on top from the bottom to top successively, differential pressure pick-up 14, soft pressing plate 15 of plasticity and cable interface 16, and be subjected to the fluid differential pressure electric signal output lead 20 of the input lead 19 of electric coil 18 and differential pressure pick-up 14 to pass wire guide on the soft pressing plate 15 of plasticity respectively the electromagnet 11 and the pin in the cable interface 16 welds, cable interface 16 and solenoid valve body 8 are by being threaded, and the bottom is placed compression spring 10 from top to bottom successively, valve 9 and bottom blind nut 23.Solenoid valve body 1 inner particular geometric shapes has guaranteed that valve 9 radially can smooth-goingly move with the flow area that changes valve 9 from high point to minimum, or open to maximum from minimum, valve 9 is the movement parts in the solenoid valve body 8, compression spring 10 is half movement parts, and other is the stationary fixing part.
But the valve 9 of present embodiment observing and controlling electromagnetic valve 3 is the ferromagnetic metal component of step column structure form, top is cylinder, the bottom is a cuboid, in cuboid boring on the through-flow direction one conical through-flow duct is arranged, this through-flow duct go out port radius less than entry radius, entry radius is consistent with the upstream line joint radius of solenoid valve body 8, by the convergent shape in the through-flow duct of taper shape to strengthen the drag effect of fluid flow, therefore when fluid is flowed through this through-flow duct of taper shape, thereon, the downstream can present tangible differential pressure of flow, when valve 9 is in opening, convection cell forms the flow area of standard-sized sheet, as long as move up and down above-mentioned cylinder, can change valve 9 flow areas, until closing, utilize the step column structure of valve 9, the prestress that suit compression spring 10 makes valve 9 upper cylinder utilizations be compressed spring 10 on the cylinder makes valve 9 be in normally open in the top, in case electromagnet 11 is subjected to, the electromagnetic force that electromagnet 11 produces is just with valve 9 upper end cylinder pullings, the thrust that overcomes compression spring 10 makes valve 9 move towards the direction of closing, until closing, dead electricity again after electromagnet 11 is subjected to electricity, the electromagnetic force of electromagnet 11 will disappear, this moment, valve 9 upper cylinder were under the thrust of compression spring 10, valve 9 will be moved towards the direction of opening, logical until standard-sized sheet.
But the electromagnet 11 of present embodiment observing and controlling electromagnetic valve 3 is installed on the top of valve 9, and keep certain passive distance with valve 9 upper cylinder, form by being subjected to electric coil 18 and soft magnetic core 17 two parts, be enclosed within on the soft magnetic core 17 by electric coil 18, when being subjected to electric coil 18 to be subjected to electricity, under the effect of electromagnetic field, soft magnetic core 17 produces very strong magnetic induction density, therefore form enough magnetic force and overcome the thrust of spring ferromagnetic valve 9 pullings, and then valve 9 turned down gradually, until closing, otherwise valve 9 is moved under the thrust of compression spring 10 towards the direction of opening, logical until standard-sized sheet; Powered by power supply by electric coil 18, when the serial connection hard switching is controlled its conducting or turn-offed, be subjected to electric coil 18 that two kinds of mode of operations are only arranged: or be subjected to the electric current maximum, or no power, be called switch working state; When serial connection electronic power switch device is controlled its conducting or is turn-offed, can utilize then that the electronic power switch device is soft to be opened and soft turn-off function, realization is subjected to the continuous variation of electric coil 18 circulating currents, can form the mild of flow regulates continuously, therefore, the water hammer effect that produces in the time of can also avoiding the sudden change of electromagnetic valve flow area.
But the upstream pressure guide hole pipe 12 of present embodiment observing and controlling electromagnetic valve 3 and downstream pressure guide hole pipe 13 are aperture pipes that two diameters are 1mm, when having fluid to pass through in the valve 9, because the convergent shape in valve 9 through-flow ducts causes throttling effect, make and produce different fluid pressures in the import and export of valve 9, and then generation fluid differential pressure, this differential pressure is through last, downstream pressure guide hole pipe 12, the input end of differential pressure pick-up 14 is transported in 13 conduction, and the differential pressure end instr in differential pressure pick-up 14 converts the fluid differential pressure electric signal to, through output lead output, handle again for subsequent module or device.
But the soft pressing plate 15 of the plasticity of present embodiment observing and controlling electromagnetic valve 3, because of its insulation characterisitic, both can guarantee that the electromagnet 11 that therefrom passes was well insulated by the lead-in wire of electric coil 18 and the electric output lead 20 of fluid differential pressure of differential pressure pick-up 14 each other, fastening force the fixing that can utilize its soft plasticity to be threaded again with assurance electromagnetic valve internal components by cable interface 16.
But the cable interface 16 of present embodiment observing and controlling electromagnetic valve 3 is by the connecting thread and the top leak-tight joint of electromagnetic valve of cable interface 16, and all attached numbering of signal wire (SW) wherein is so that to carry out signal by communication cable and present embodiment equipment in addition mutual.
But the bottom blind nut 23 of present embodiment observing and controlling electromagnetic valve 3 can guarantee the convenience of valve 9 and compression spring 10 loading and unloading, and it is more convenient that valve 9 in-to-ins are cleaned, and in addition, bottom blind nut 23 posts leak-proof gasket 24, in case liquid seepage from here.
But present embodiment observing and controlling electromagnetic valve 3 is by on specific, downstream pressure guide hole pipe 12, on the 13 conduction valves 9, the fluid downstream differential pressure is to differential pressure pick-up 14, differential pressure pick-up 14 converts the fluid differential pressure signal to the fluid differential pressure electric signal by its differential pressure end instr, according to the derivation of the physical quantity transformational relation of end instr in Bernoulli Jacob's energy conservation equation and the differential pressure pick-up 14 can obtain the to flow through computing formula of flow of valve 9, simultaneously, present embodiment is subjected to the added voltage in electric coil 18 two ends just can change the electric current that is subjected in the electric coil 18 by changing electromagnet 11, therefore change the electromagnetic attraction of electromagnet 11 and reach the control that valve 9 is moved up and down displacement, and then the flow area of change valve 9 is to reach the control of fluid flow, in addition, the measurement of present embodiment and control signal with exterior be connected also very convenient.
But the head piece of going into of observing and controlling electromagnetic valve 3 valves 9 openings in the present embodiment directly is communicated with the fuel-tank outlet pipeline by the oil pipe communication port, but observing and controlling electromagnetic valve 3 valves 9 openings go out head piece is communicated to foot throttle by the oil pipe communication port inlet.But near on the tube wall of valve 9 through flow hole upstream and downstream end faces two pressure guide hole pipes 12 are set respectively in the observing and controlling electromagnetic valve 3,13, two of differential pressure pick-up 14 input terminations respectively with two pressure guide hole pipes 12,13 connect, upstream and downstream pressure signal during fuel flow exists the difference of pressure of upstream and downstream fluid because of the drag effect of throttling element, two kinds of pressure signals are through pressure guide hole pipe 12,13 transfer to differential pressure pick-up 14, differential pressure pick-up 14 converts the fluid differential pressure of flow signal of sensing to input end that the differential pressure electric signal exports signal processor 1 to, and signal processor 1 calculates the transient flow value that obtains in the oil circuit according to the differential pressure electric signal by flow and fluid differential pressure equation.But be subjected to the negative pole of a termination 24V direct supply of electric coil 18 in the observing and controlling electromagnetic valve 3, the other end is connected to the negative electrode of first electronic switch 4, the anode of first electronic switch 4 is connected with the positive pole of 24V direct supply, but opening or closing of observing and controlling electromagnetic valve 3 valves 9 is subjected to first electronic switch 4 to control the control of utmost point start pulse signals, when first electronic switch, the 4 control utmost points receive trigging pulse, 4 conductings of first electronic switch make that but observing and controlling electromagnetic valve 3 is subjected to by electric coil 18, so but the valve 9 of observing and controlling electromagnetic valve 3 is closed under the effect of electromagnet suction, when first electronic switch, the 4 control utmost points do not receive trigging pulse, the 4 not conductings of first electronic switch, make that but observing and controlling electromagnetic valve 3 is subjected to electric coil 18 not to be subjected to electricity, but the valve 9 of observing and controlling electromagnetic valve 3 returns to normally open under the thrust of compression spring.In case the mis-accelerator pressing behavior takes place according to the differential pressure electric signal judgement driver who receives in signal processor 1 when the needs sudden stop, can send braking instruction to controller 2 immediately, and then, the controller 2 control utmost point to two electronic switchs 4 and 5 simultaneously sends trigging pulse, make electronic switch 4 and 5 conductings, but observing and controlling electromagnetic valve 3 is subjected to electric coil 18 and electric pushrod 6 DC machine to be subjected to electricity, and at this moment, the vehicle fuel path in time is closed, also timely autobrake automobile.Whole process was finished in the time of 10ms.
Shown in Figure 3, the electric pushrod 6 in the present embodiment is installed on the lower end of the footbrake plate behind the lengthening weighing arm.In case signal processor 1 is judged driver's mis-accelerator pressing, send braking instruction to controller 2 immediately, in the time of controller 2 control fuel cut oil circuits, controller 2 to second electronic switch, 5 output trigging pulse conductings, second electronic switch 5, starts electric pushrod 6, by second output port under the driving of DC machine, the thrust that push rod produces causes automobile automatic brake by transmission of torque, therefore, can avoid contingent accident, and ensure that the normal function of driving engine is not endangered.
When concrete application, but observing and controlling electromagnetic valve 3 is installed in the upstream side of automobile oil feed line pin step on the accelerator in the present embodiment, electric pushrod 6 is installed at footbrake plate weighing arm elongated end, the electronic module of signal processor 1, controller 2 and electronic switch 4 and 5 integrated being made into one, but be connected with the cable interface of observing and controlling electromagnetic valve 3 by the joint current interface with electric pushrod 6.Above-mentioned joint current interface is made up of 6 core leads, wherein, but 2 cores be connected with two electrodes of observing and controlling electromagnetic valve 3 differential pressure electric signal for differential pressure electric signal input line, 4 cores are that the vdc output line is to powered by electric coil 18 and electric pushrod 6 DC machine; 2 cores in the 4 core vdc output lines are the public negative pole that is subjected to electric coil 18 and electric pushrod 6 DC machine, are subjected to electric coil 18 to do corresponding the connection with the positive pole of electric pushrod 6 DC machine but all the other 2 cores then are respectively the negative electrode output line of two electronic switchs with observing and controlling electromagnetic valve 3.But the cable interface 16 of observing and controlling electromagnetic valve 3 is made up of 4 core leads, and 2 cores are the output of differential pressure electric signal, and 2 cores are the vdc input; The cable interface of electric pushrod 6 is made up of 2 core leads, is the vdc input.
After present embodiment installs according to above-mentioned connection mode and implementation method, when automobile when driving process runs into accident and needs emergency brake, can avoid the driver to lead to traffic accident because of mis-accelerator pressing, yet, the startup of automobile and cruising function can not be affected, and entire work process is further described below:
(1) in necessary sudden stop, driver's mis-accelerator pressing, fuel flow at first can occur sharply increases, but on behalf of the fluid differential pressure information of sudden change flow, the observing and controlling electromagnetic valve 3 among the present invention will be delivered to signal processor 1 in real time in real time;
(2) signal processor 1 will calculate comparing when premutation flow and previous moment flow of obtaining, and according to front and back difference in flow Δ q and the criterion that presets, just can judge accurately whether driver at this moment the behavior of mis-accelerator pressing takes place;
(3) in a single day judge mis-accelerator pressing, signal processor 1 in time sends braking instructions to controller 2;
(4) after controller 2 obtains braking instruction, but close with the valve 9 of control observing and controlling electromagnetic valve 4 to first electronic switch, 4 output trigging pulses by first output port in real time, simultaneously, move to drive electric pushrod 6 to second electronic switch, 5 output trigging pulses by second output port, realize automatic emergency brake;
(5) after accident was removed, all recovered normal.
From whole work as can be seen, present embodiment can prevent the generation that the sudden stop mistake is stepped on incident automatically, has effectively ensured personnel and vehicle safety, and simple and feasible to the improvement of existing automobile, therefore has the significant social economic benefit.
Claims (10)
1, a kind of emergency braking device anti-misstep device, comprise controller, drg, it is characterized in that, also comprise: signal processor, but observing and controlling electromagnetic valve, first electronic switch, second electronic switch, electric pushrod, but the input port of signal processor is connected with the differential pressure electrical signal mouth of observing and controlling electromagnetic valve, the output port of signal processor is connected to the input port of controller, first output port of controller is connected to first electronic switch control utmost point, second output port of controller is connected to second electronic switch control utmost point, but first electronic switch Yang Yin the two poles of the earth are serially connected on the direct current power supply loop of observing and controlling electromagnetic valve, but the observing and controlling electromagnetic valve is arranged at the upstream side of foot throttle in the automobile oil feed line, but the automobile fuel feeding is at first by just passing to engine cylinder by foot throttle again behind the observing and controlling electromagnetic valve, second electronic switch Yang Yin the two poles of the earth are serially connected on the direct current power supply loop of electric pushrod, and the push rod top of electric pushrod and the drg foot-driven lever lower end arm of force are formed on rotating mechanical connection in 90 ° of Plane Angle scopes.
2, emergency braking device anti-misstep device according to claim 1, it is characterized in that, described controller input end is connected with the mouth of signal processor with the braking instruction of received signal treater to its transmission, but controller is exported the action of trigging pulse with control observing and controlling electromagnetic valve valve closing and electric pushrod to the control utmost point of first electronic switch, second electronic switch according to braking instruction simultaneously by its first output port, second output port, realizes in time closing oil circuit and self-actuating brake.
3, emergency braking device anti-misstep device according to claim 1, it is characterized in that, but described observing and controlling electromagnetic valve, comprise: solenoid valve body, valve, compression spring, electromagnet, the pressure guide hole pipe, differential pressure pick-up, soft pressing plate of plasticity and cable interface, valve wherein, compression spring, electromagnet, differential pressure pick-up, it is inner and by serial arrangement from bottom to up that soft pressing plate of plasticity and cable interface are distributed in solenoid valve body, valve is positioned at solenoid valve body in-to-in center, compression spring is enclosed within on the cylinder on valve top, electromagnet is positioned at directly over this cylinder, and it is gapped with this cylinder, the pressure input termination of pressure guide hole pipe is positioned on the tube wall of solenoid valve body in-to-in fluid passage, the pressure output end head of pressure guide hole pipe is connected with the pressure input end of differential pressure pick-up, the fluid differential pressure electric signal of differential pressure pick-up is exported by output lead, the fluid differential pressure electric signal output lead that is subjected to electric coil input lead and differential pressure pick-up of electromagnet is connected with cable interface, and is connected with signal processor with solenoid valve body controller outward respectively by cable interface.
4, emergency braking device anti-misstep device according to claim 3, it is characterized in that, described solenoid valve body is a kind of housing structure, inner hollow, there are upstream line joint and downstream line joint in exterior both sides, on solenoid valve body relies on, the outside thread of downstream line joint and last, downstream line connects, upstream line joint and downstream line joint and valve are through-flow, and the duct forms the fluid passage, the solenoid valve body bottom is provided with a bottom blind nut, part top and bottom two parts in the solenoid valve body, electromagnet is placed on top from the bottom to top successively, differential pressure pick-up, soft pressing plate of plasticity and cable interface, electromagnet is subjected to the electric signal output line of the lead-in wire of electric coil and differential pressure pick-up to pass wire guide on the soft pressing plate of plasticity respectively and the pin in the cable interface welds, cable interface and solenoid valve body are by being threaded, and the bottom sets gradually compression spring from top to bottom, valve and bottom blind nut.
5, emergency braking device anti-misstep device according to claim 4 is characterized in that, described cable interface utilizes connecting thread and solenoid valve body top leak-tight joint, and all attached numbering of signal wire (SW) wherein is so that to carry out signal by communication cable mutual; Post leak-proof gasket on the blind nut of described bottom.
6, emergency braking device anti-misstep device according to claim 3, it is characterized in that, described valve is the step column structure, top is cylinder, the bottom is a cuboid, is axially arranged with a through-flow duct at cuboid over against liquid stream, and this through-flow duct is cylindrical-conical, it goes out port radius less than entry radius, and entry radius is consistent with the upstream line joint radius of solenoid valve body.
7, emergency braking device anti-misstep device according to claim 3, it is characterized in that, described electromagnet is installed on the top of valve by formed by electric coil and soft magnetic core, and keeps passive distance with the valve upper cylinder, be enclosed within on the soft magnetic core by electric coil, when being subjected to electric coil to be subjected to electricity, under the effect of electromagnetic field, soft magnetic core produces magnetic induction and forms magnetic force and overcomes the ferromagnet pulling of the thrust of spring with valve, and then valve turned down gradually, until closing; Otherwise, the valve upper cylinder is under the thrust of compression spring, valve is moved towards the direction of opening,, be subjected to electric coil by ac power supply until open-minded fully, when the serial connection hard switching is controlled its conducting or is turn-offed, be subjected to electric coil that two kinds of mode of operations of switch are only arranged, control its conducting or shutoff, then can utilize the soft of power switching device to open and soft turn-off function by the serial connection power switching device, realization is subjected to the continuous variation of electric coil circulating current, forms the mild of flow and regulates continuously.
8, emergency braking device anti-misstep device according to claim 3, it is characterized in that, described pressure guide hole pipe is the aperture pipe that two diameters are 1mm, wherein one is upstream pressure guide hole pipe, its pressure input termination is positioned at the upstream, fluid passage near on the tube wall of valve inlet, another root is a downstream pressure guide hole pipe, its pressure input termination is positioned at the downstream, fluid passage near on the tube wall of valve export, on, the pressure input termination of downstream pressure guide hole pipe connects the pressure input end of differential pressure pick-up respectively, the fluid differential pressure electric signal of differential pressure pick-up is exported by output lead, when having fluid to pass through in the valve, transport to the input end of differential pressure pick-up through the conduction of pressure guide hole pipe, differential pressure end instr conversion in differential pressure pick-up converts the fluid differential pressure signal to the fluid differential pressure electric signal, exports through output lead again.
9, emergency braking device anti-misstep device according to claim 1 is characterized in that, described electric pushrod, its maximum thrust reaches 300N, and range reaches 130mm, and the 24V/12V direct current permanent magnet motor drives, full load current 2A during 24V, speed of response 27～50mm/s.
10, emergency braking device anti-misstep device according to claim 1, it is characterized in that, but the input port of described signal processor receives the fluid differential pressure electric signal of observing and controlling electromagnetic valve output, according to the incoming signal that the receives calculating of making a strategic decision, when automobile is in motoring condition, but the input port of signal processor can receive the fluid differential pressure electric signal of observing and controlling electromagnetic valve output in real time, and judge the driver by the rate of change of oil circuit flow and whether stepped on throttle in the sudden stop mistiming, whether therefore can make a policy needs to send braking instruction to controller, signal processor is judged through decision-making, in case judge driver's mis-accelerator pressing, then immediately by output port to controller output signal, controller is exported trigging pulse by first output port to the control utmost point of first electronic switch immediately according to this signal, first electronic switch is open-minded thereupon, but the electric coil that is subjected to of observing and controlling electromagnetic valve is subjected to, but make the valve closing of the observing and controlling electromagnetic valve that is in normally open immediately, meanwhile, controller is by the control utmost point output start pulse signal of second output port to second electronic switch, make this electronic switch open-minded, start electric pushrod propelling vehicle drg immediately and make automobile automatic brake.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200710042893A CN100584651C (en) | 2007-06-28 | 2007-06-28 | Emergency braking device anti-misstep device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200710042893A CN100584651C (en) | 2007-06-28 | 2007-06-28 | Emergency braking device anti-misstep device |
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| CN101104382A CN101104382A (en) | 2008-01-16 |
| CN100584651C true CN100584651C (en) | 2010-01-27 |
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| CN200710042893A Expired - Fee Related CN100584651C (en) | 2007-06-28 | 2007-06-28 | Emergency braking device anti-misstep device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104175881B (en) * | 2014-08-06 | 2016-07-13 | 陕西科技大学 | A kind of emergency braking apparatus for automatic catch vehicle |
| CN107719121B (en) * | 2017-09-29 | 2020-06-02 | 利辛县雨若信息科技有限公司 | Automobile accelerator mistaken stepping prevention control device |
| CN111449362B (en) * | 2020-04-10 | 2021-06-04 | 李明渊 | Device for assisting in stepping on brake accelerator |
| CN115009240B (en) * | 2022-07-06 | 2022-12-30 | 杭州禾美汽车科技有限公司 | Brake control system for new energy automobile |
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| 防误踩油门装置的设计构想. 贾佳鹏.汽车电器，第8期. 2006 |
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