CN104709284A - Automobile automatic speed-limiting control system and control method - Google Patents
Automobile automatic speed-limiting control system and control method Download PDFInfo
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- CN104709284A CN104709284A CN201510095708.4A CN201510095708A CN104709284A CN 104709284 A CN104709284 A CN 104709284A CN 201510095708 A CN201510095708 A CN 201510095708A CN 104709284 A CN104709284 A CN 104709284A
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- automobile
- speed limit
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- controller
- speed
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W30/00—Purposes of road vehicle drive control systems not related to the control of a particular sub-unit, e.g. of systems using conjoint control of vehicle sub-units, or advanced driver assistance systems for ensuring comfort, stability and safety or drive control systems for propelling or retarding the vehicle
- B60W30/14—Adaptive cruise control
- B60W30/143—Speed control
- B60W30/146—Speed limiting
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W10/00—Conjoint control of vehicle sub-units of different type or different function
- B60W10/04—Conjoint control of vehicle sub-units of different type or different function including control of propulsion units
- B60W10/06—Conjoint control of vehicle sub-units of different type or different function including control of propulsion units including control of combustion engines
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W10/00—Conjoint control of vehicle sub-units of different type or different function
- B60W10/18—Conjoint control of vehicle sub-units of different type or different function including control of braking systems
- B60W10/184—Conjoint control of vehicle sub-units of different type or different function including control of braking systems with wheel brakes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W40/00—Estimation or calculation of non-directly measurable driving parameters for road vehicle drive control systems not related to the control of a particular sub unit, e.g. by using mathematical models
- B60W40/02—Estimation or calculation of non-directly measurable driving parameters for road vehicle drive control systems not related to the control of a particular sub unit, e.g. by using mathematical models related to ambient conditions
- B60W40/06—Road conditions
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W40/00—Estimation or calculation of non-directly measurable driving parameters for road vehicle drive control systems not related to the control of a particular sub unit, e.g. by using mathematical models
- B60W40/02—Estimation or calculation of non-directly measurable driving parameters for road vehicle drive control systems not related to the control of a particular sub unit, e.g. by using mathematical models related to ambient conditions
- B60W40/06—Road conditions
- B60W40/076—Slope angle of the road
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W40/00—Estimation or calculation of non-directly measurable driving parameters for road vehicle drive control systems not related to the control of a particular sub unit, e.g. by using mathematical models
- B60W40/10—Estimation or calculation of non-directly measurable driving parameters for road vehicle drive control systems not related to the control of a particular sub unit, e.g. by using mathematical models related to vehicle motion
- B60W40/105—Speed
Abstract
The invention discloses an automobile automatic speed-limiting control system and a control method. The automobile automatic speed-limiting control system comprises a control unit and a signal collecting unit. The control unit comprises a controller, an ABS braking device and a control valve arranged on an automobile oil supply pipeline for controlling the flow of gasoline. The signal collecting unit comprises a speed sensor used for collecting a driving speed of an automobile, a speed limit acquiring device used for collecting a speed limit value of a current driving road section and a satellite positioning device used for collecting a current driving direction of the automobile and a road condition where the automobile is located. The controller judges whether the current automobile is overspeeded or not based on signals received from the speed sensor and the speed limit acquiring device. Based on the judging signals and the information acquired from the satellite positioning device, the opening degree of the control valve and the condition of whether to activate the ABS braking device or not are confirmed. According to the automobile automatic speed-limiting control system, the effects of user-friendliness, high practicality and high safety coefficient are achieved. The invention further provides a control method which has the safe, care-free and intelligentized effect.
Description
Technical field
The present invention relates to a kind of velocity limiter used under automobile running condition.More particularly, the present invention relates to and be a kind ofly used in Car Automatic Speed Limit control system under automobile running condition and control method.
Background technology
Existing speed limit product is used in running car situation, be mainly used in for highway traffic control section, when having a strict speed limit to the moving velocity of automobile, as auxiliary, the moving velocity of automobile is limited, to reach its not traffic violation, there is again the effect of higher safety.
Specifically, usual speed limit product mainly adopts two kinds of methods to realize: one is by installing radio-frequency transmissions end on speed limit guideboard, automobile is installed corresponding radio frequency reception end, realizes the acquisition of the speed limit to each section; Two is on automobile, install photographic camera or drive recorder and image processor to match the incompatible acquisition realizing speed limit, the speed limit pictorial information on speed limit guideboard is obtained by the camera function of photographic camera or drive recorder, and by image processor, the speed-limiting messages on picture is analyzed, processed, to obtain the digital signal of the speed limit to each section; Three is digital signals that electronic chart by storing in the navigating instrument on automobile obtains the speed limit in each section.
But in these three kinds of modes, all there is some problems, wherein first kind of way, its needs carry out secondary transformation respectively to each section speed limitation board, automobile, its engineering is comparatively large, and manpower and materials drop into more, is difficult to realize, the second way, need immediately to be taken pictures to each section speed limitation board by photographic camera or drive recorder in vehicle traveling process, obtain the speed limit information on each speed limitation board, but its photo taken is often because automobile is keeping certain speeds, and make shooting photographic fog out unclear, be unfavorable for that image processor extracts the speed limit information on picture to picture, its stability can not be guaranteed, obtain the poor effect of speed limit, often there will be speed limiting system not conduct or maloperation, the third mode, it adopts the electronic chart stored in navigating instrument to obtain the digital signal of the speed limit in each section, it reckons without and adopts various ways to extract the digital signal of the speed limit in navigating instrument, and there is the operation being reduced navigating mate when long-duration driving by speed limiting system, the as easy as rolling off a log reduction of personnel is made to watch out for and cause the generation of safety misadventure, occur up in vehicle traveling process simultaneously, or during downstream state, separately be not considered, very easily when up gradient is larger, because speed limiting system is under-supply to driving engine oil mass, automobile can not the generation of normal upstream or the situation that falls back, and the safety misadventure caused, or automobile be in descending grade larger time, by means of only speed limiting system to driving engine fuel-flow control, and do not consider the problem of the descending inertia of automobile, and cause speed limiting system cannot carry out the effect of speed limit veritably to the moving velocity of automobile, and occur safety misadventure.
Summary of the invention
An object of the present invention is to solve at least the problems referred to above and/or defect, and the advantage will illustrated at least is below provided.
A further object of the invention is to provide a kind of Car Automatic Speed Limit control system, its section speed limit that can be got by navigating instrument is controlled control cock opening degree, to control the amount of gasoline of automotive engine, to realize the effect of speed limit, and simultaneously can to different section situations, as up, descending, craspedodrome situation are analyzed, to reach different situations, give different control signals, there is hommization, practicality is high, safety factor is high effect.
A further object of the invention is by the control method to Car Automatic Speed Limit control system, the speed limit requirement that can fall according to current section, safety, province's heart realize intelligence, automatic speed-limiting to the moving velocity of automobile, need not navigating mate Non-follow control, simplify navigating mate operation, make navigating mate indefatigability and there is better Driving control.
In order to realize, according to these objects of the present invention and other advantage, providing a kind of Car Automatic Speed Limit control system, comprising:
Control unit, it comprises controller, ABS brake gear and is arranged on to control the control cock of gasoline flow on automobile oil supply line, and described ABS brake gear, control cock are all connected with described controller;
Signal gathering unit, it comprises the speed sensor for gathering automobile driving speed, gather the speed limit acquisition device of automobile current driving road segment speed limit and gather the travel direction of current automobile and the satellite positioning device of residing road conditions, and described speed sensor, speed limit acquisition device, satellite positioning device is all connected to controller, based on the signal received from speed sensor and speed limit acquisition device, wherein said controller judges whether current automobile exceeds the speed limit, and determine whether the opening degree of control cock and ABS brake gear start according to this decision signal and from the information that satellite positioning device gets.
Preferably, wherein, described speed limit acquisition device comprises navigating instrument and the recognizer that is connected successively with navigating instrument and amplifier, and the mouth of described amplifier, speed sensor is all connected to comparator, and the mouth of described comparator is connected to controller.
Preferably, wherein, described satellite positioning device obtain traffic information be present road situation information.
Preferably, wherein, described controller is also connected with compensation instrument, and described compensation instrument is connected with control cock.
Object of the present invention can also be realized the control method of automobile speed limit by a kind of Car Automatic Speed Limit control system that adopts further, and the method comprises the following steps:
Step one, gathered the speed limit exporting the current velocity amplitude of automobile and current road segment respectively by described speed sensor, speed limit acquisition device, and to convert thereof into be the first electric signal and the second electric signal;
Step 2, receive the first electric signal and the second electric signal by described comparator, and the two is compared obtain a comparative result, and described comparative result is sent to controller;
Based on described comparative result, step 3, described controller judge whether automobile drives over the speed limit on current road segment, if then jump to step 4, otherwise returns step one;
Step 4, obtain the current residing road condition information of automobile by described satellite positioning device and be sent to controller;
Step 5, described controller are based on the road condition information received, to present road, whether there is the gradient to judge, if having, jump to step 6, otherwise send control signal according to result of determination to control cock, to determine the opening degree of control cock, and return step one;
Step 6, obtain automobile current driving direction information by described satellite positioning device and be sent to controller;
Step 7, described controller are based on the current travel direction information of the automobile received, the current uplink state that whether is in of automobile is judged, and according to result of determination to control cock or/and ABS brake system sends control signal, to determine the opening degree of control cock and whether to start ABS brake system, and return step one.
Preferably, wherein, in described step one, recognizer in described speed limit acquisition device is identified current road segment speed limit numerical value by the speed limit voice signal that sends navigating instrument or the electronic chart be stored in navigating instrument, and convert thereof into corresponding electric signal, then be sent to comparator after electric signal being amplified by amplifier.
Preferably, wherein, in described step 2, described comparator compares the first electric signal received and the second electric signal, if the value of the first electric signal is greater than the value of the second electric signal, then exports 1 to controller, otherwise exports 0; In described step 3, described controller receives the numerical value that comparator exports, and if numerical value is 1, then judges hypervelocity.
Preferably, wherein, in described step 5, described controller is based on the current residing road condition information of the automobile received, to the present road residing for automobile, whether there is the gradient by determination module disposed thereon to judge, if judged result is for having the gradient, then jumping to step 6, otherwise described controller with the second electric signal for standard sends control signal to control cock, to determine that the opening degree of control cock realizes the speed limit to automobile driving speed.
Preferably, wherein, in described step 7, whether described controller is in uplink state based on the motoring condition that the automobile received is current judges, if send control signal to control cock again after then being compensated secondary signal by described compensation instrument, to determine that the opening degree of control cock realizes the speed limit to automobile driving speed, and return step one.
Preferably, wherein, in described step 4, whether described controller is in uplink state based on the motoring condition that the automobile received is current judges, if not then with the second electric signal for standard sends control signal to control cock, start ABS brake system, to determine the opening degree of control cock and to realize, to the speed limit of automobile driving speed, returning step one by ABS brake system simultaneously.
The present invention at least comprises following beneficial effect: one, due to the navigating instrument in the speed limit acquisition device that arranges in the present invention, ABS brake system, speed sensor all utilize the device of automobile self, and therefore relative to traditional speed-limit device, it has the effect reduced costs.
They are two years old, the section speed limit got by navigating instrument in the present invention is controlled control cock opening degree, to control the amount of gasoline of automotive engine, to realize the effect of speed limit, and simultaneously can to different section situations, as up, descending, craspedodrome situation are analyzed, to reach different situations, give different control signals, there is hommization, practicality is high, safety factor is high effect.
They are three years old, to the speed limit requirement that the moving velocity of automobile can fall according to current section in the present invention, safety, province's heart realize intelligence, automatic speed-limiting to the moving velocity of automobile, need not navigating mate Non-follow control, simplify navigating mate operation, and two kinds of speed limit obtain manners are provided, navigating mate are selected more, and under voice message indefatigability there is better driving experience.
They are four years old, once enter intelligent speed-limiting pattern in the present invention, the effect of the original foot-operated control fuel tap of automobile is only the two kinds of alternatives had to engine oil and not fuel feeding, and the number of oil mass can directly be controlled by speed limiting system, prevent beginner in maloperation or the safety misadventure the control fuel tap of automobile being used as throttle to step on and causing.
They are five years old, speed limiting system of the present invention also can receive and manually input speed limit as electric signal, to realize the control to the opening degree of control cock, reach the object at the uniform velocity travelled, the operation of navigating mate can be simplified, and beginner is also suitable for, the speed of a motor vehicle can be controlled in a safer velocity amplitude.
Part is embodied by explanation below by other advantage of the present invention, target and feature, part also will by research and practice of the present invention by those skilled in the art is understood.
Accompanying drawing explanation
Fig. 1 is the structural representation of Car Automatic Speed Limit control system in one embodiment of the present of invention.
Detailed description of the invention
Below in conjunction with accompanying drawing, the present invention is described in further detail, can implement according to this with reference to specification sheets word to make those skilled in the art.
Should be appreciated that used hereinly such as " to have ", other element one or more do not allotted in " comprising " and " comprising " term or the existence of its combination or interpolation.
Fig. 1 shows the way of realization according to a kind of Car Automatic Speed Limit control system of the present invention, comprising:
Control unit 1, it comprises controller 2, ABS brake gear 3 and is arranged on to control the control cock 4 of gasoline flow on automobile oil supply line, and described ABS brake gear, control cock are all connected with described controller;
Signal gathering unit 5, it comprises the speed sensor 6 for gathering automobile driving speed, gather the speed limit acquisition device 7 of automobile current driving road segment speed limit and gather the travel direction of current automobile and the satellite positioning device 8 of residing road conditions, and described speed sensor, speed limit acquisition device, satellite positioning device is all connected to controller, based on the signal received from speed sensor and speed limit acquisition device, wherein said controller judges whether current automobile exceeds the speed limit, and determine whether the opening degree of control cock and ABS brake gear start according to this decision signal and from the information that satellite positioning device gets.Described control cock is used for limiting the flow of gasoline pipeline when overspeed of vehicle, and then make to flow into in-engine oil mass and controlled, to realize the speed limit to automobile, described ABS brake gear is used at overspeed of vehicle and when being in downstream state, the control to automobile oil mass is carried out by control cock, but because the reason of automobile inertial, and when can not control within speed limit, start ABS brake gear and assist to reach the effect controlled by car speed within speed limit.This scheme is adopted to detect the moving velocity of automobile in real time, and carry out realization with the current road segment speed limit got and compare, as judged to exceed the speed limit, by being arranged on the control cock opening degree on gasoline pipeline, the fuel feeding size of driving engine is controlled, to realize the speed limit to automobile driving speed, because of the component that its INT COMP majority adopts automobile itself to carry, there is cost low, and safety, intelligence, the favourable part of good stability, simultaneously when control cock works, the effect of the original foot-operated control fuel tap of automobile is only the two kinds of alternatives had to engine oil and not fuel feeding, and oil mass number can directly by speed limiting system to the control signal of control cock realize control, reduce maloperation, safety factor is higher.Further, this mode is a kind of explanation of preferred embodiments, but is not limited thereto.
In another kind of example, described speed limit acquisition device 7 comprises navigating instrument 9 and the recognizer 10 that is connected successively with navigating instrument and amplifier 11, the mouth of described amplifier, speed sensor is all connected to comparator 12, and the mouth of described comparator is connected to controller.The speed limit of this scheme to each section is adopted to obtain, relative to the shooting of traditional camera or the mode of installing radio-frequency receiving-transmitting end, there is the favourable part that reliability is high, cost obtains control, and described recognizer can be used for identifying that vehicle body carries the speed limit of the voice message signal to current driving road segment speed limit that navigating instrument sends or each section being stored in the electronic chart internal labeling in navigating instrument, make the acquisition diversification of forms of its speed limit, and more quick, be beneficial to controller and can send control command within the shortest time.Further, this mode is a kind of explanation of preferred embodiments, but is not limited thereto.
In another kind of example, described satellite positioning device obtain traffic information be present road situation information.Adopt the particular case of this scheme to the current running section place of automobile to analyze, be beneficial to controller and can make different responses flexibly according to different road conditions, there is alerting ability high, the favourable part of hommization.Further, this mode is a kind of explanation of preferred embodiments, but is not limited thereto.
In another kind of example, described controller is also connected with and compensates instrument 13, and described compensation instrument is connected with control cock.This scheme is adopted to be in overspeed condition at automobile, but when it locates again uplink state, before electric signal after changing with speed limit controls as the opening degree of control signal to control cock, first by compensating instrument, this electric signal is compensated, control as the opening degree of control signal to control cock with the electric signal after compensating, make automobile when being in the gradient of different size can in the scope that speed limit specifies normal upstream, and can not because of controlling the opening degree of control cock, and then make automobile when great slope is up, because the reason of inertia can not the impact that requires but forced ascending to cause automotive engine of normal upstream or speed out of reach, there is intelligence, practical, the favourable part increased the service life.Further, this mode is a kind of explanation of preferred embodiments, but is not limited thereto.
Car Automatic Speed Limit control system in such scheme can realize automobile speed limit by following control method, and the method comprises the following steps:
Step one, gathered the speed limit exporting the current velocity amplitude of automobile and current road segment respectively by described speed sensor, speed limit acquisition device, and to convert thereof into be the first electric signal and the second electric signal;
Step 2, receive the first electric signal and the second electric signal by described comparator, and the two is compared obtain a comparative result, and described comparative result is sent to controller;
Based on described comparative result, step 3, described controller judge whether automobile drives over the speed limit on current road segment, if then jump to step 4, otherwise returns step one;
Step 4, obtain the current residing road condition information of automobile by described satellite positioning device and be sent to controller;
Step 5, described controller are based on the road condition information received, to present road, whether there is the gradient to judge, if having, jump to step 6, otherwise send control signal according to result of determination to control cock, to determine the opening degree of control cock, and return step one;
Step 6, obtain automobile current driving direction information by described satellite positioning device and be sent to controller;
Step 7, described controller are based on the current travel direction information of the automobile received, the current uplink state that whether is in of automobile is judged, and according to result of determination to control cock or/and ABS brake system sends control signal, to determine the opening degree of control cock and whether to start ABS brake system, and return step one.Adopt different schemes respectively to realize when adopting this scheme to be in different road conditions to automobile and speed limit is carried out to automobile, have adaptable, practical, the favourable part of hommization.Further, this mode is a kind of explanation of preferred embodiments, but is not limited thereto.
In another kind of example, in described step one, recognizer in described speed limit acquisition device is identified current road segment speed limit numerical value by the speed limit voice signal that sends navigating instrument or the electronic chart be stored in navigating instrument, and convert thereof into corresponding electric signal, then be sent to comparator after electric signal being amplified by amplifier.Adopt this scheme that two kinds of modes can be selected to obtain speed limit, there is the favourable part that stability is strong, practicality is good, different driving experience can be brought to different navigating mates, and when obtaining for one, alternative scheme can be had to adopt, and its navigating instrument can receive the speed limit that user manually inputs, and with value of its input as speed limit electric signal, with the moving velocity of automobile can control one comparatively fixing and in the velocity amplitude of safety.Further, this mode is a kind of explanation of preferred embodiments, but is not limited thereto.
In another kind of example, in described step 2, described comparator compares the first electric signal received and the second electric signal, if the value of the first electric signal is greater than the value of the second electric signal, then exports 1 to controller, otherwise exports 0; In described step 3, described controller receives the numerical value that comparator exports, and if numerical value is 1, then judges hypervelocity.Whether adopt this scheme to exceed the speed limit to running car can obtain fast at current road segment, this comparator also can replace with comparator circuit etc. simultaneously, to reach identical effect, has practical favourable part.Further, this mode is a kind of explanation of preferred embodiments, but is not limited thereto.
In another kind of example, in described step 5, described controller is based on the current residing road condition information of the automobile received, by the present road residing for determination module 14 pairs of automobiles disposed thereon, whether there is the gradient to judge, if judged result is for having the gradient, then jump to step 6, otherwise described controller with the second electric signal for standard sends control signal to control cock, to determine that the opening degree of control cock realizes the speed limit to automobile driving speed.Adopt this scheme when overspeed of vehicle, real-time judgement is carried out to the road conditions of automobile current driving, if current road segment has the gradient, just need to consider to make corresponding judgement according to the gradient, and make corresponding reaction according to judged result, can adapt to make native system can correctly its speed of a motor vehicle be controlled while the speed limit of current road segment to different road environments, road conditions, can ensure that automobile can normally travel, there is hommization, intellectuality, practical favourable part.Further, this mode is a kind of explanation of preferred embodiments, but is not limited thereto.
In another kind of example, in described step 7, whether described controller is in uplink state based on the motoring condition that the automobile received is current judges, if send control signal to control cock again after then being compensated secondary signal by described compensation instrument, to determine that the opening degree of control cock realizes the speed limit to automobile driving speed, and return step one.When adopting this scheme at overspeed of vehicle and be in up again, control signal is compensated, while making the moving velocity of automobile can remain in speed limit, automobile can normally travel, can not be not enough because of automobile oil mass time up, forced ascending driving engine gives the dynamics of automobile not to the damage that automobile causes driving engine, even occurs situation about falling back, and then bring safety misadventure, there is the favourable part that safety factor is high.Further, this mode is a kind of explanation of preferred embodiments, but is not limited thereto.
In another kind of example, in described step 4, whether described controller is in uplink state based on the motoring condition that the automobile received is current judges, if not then with the second electric signal for standard sends control signal to control cock, start ABS brake system simultaneously, to determine the opening degree of control cock and to realize, to the speed limit of automobile driving speed, returning step one by ABS brake system.When adopting this scheme at overspeed of vehicle and be in downstream state, when the opening degree of control cock is controlled to the electric signal corresponding with speed limit, start ABS brake system simultaneously and carry out auxiliary speed limit, when preventing automobile to be in abrupt slope, glide voluntarily because of the strength of inertia, and the generation of the hypervelocity caused and safety misadventure, there is safety high, the favourable part of hommization.Further, this mode is a kind of explanation of preferred embodiments, but is not limited thereto.
Here the number of devices illustrated and treatment scale are used to simplify explanation of the present invention.The application of automobile speed limit system of the present invention and control method thereof, modifications and variations be will be readily apparent to persons skilled in the art.
As mentioned above, according to the present invention, one, due to the navigating instrument in the speed limit acquisition device that arranges in the present invention, ABS brake system, speed sensor all utilize the device of automobile self, and therefore relative to traditional speed-limit device, it has the effect reduced costs.
They are two years old, the section speed limit got by navigating instrument in the present invention is controlled control cock opening degree, to control the amount of gasoline of automotive engine, to realize the effect of speed limit, and simultaneously can to different section situations, as up, descending, craspedodrome situation are analyzed, to reach different situations, give different control signals, there is hommization, practicality is high, safety factor is high effect.
They are three years old, to the speed limit requirement that the moving velocity of automobile can fall according to current section in the present invention, safety, province's heart realize intelligence, automatic speed-limiting to the moving velocity of automobile, need not navigating mate Non-follow control, simplify navigating mate operation, make navigating mate indefatigability and there is better driving experience.
They are four years old, once enter intelligent speed-limiting pattern in the present invention, the effect of the original foot-operated control fuel tap of automobile is only the two kinds of alternatives had to engine oil and not fuel feeding, and the number of oil mass can directly be controlled by speed limiting system, prevent beginner in maloperation or the safety misadventure the control fuel tap of automobile being used as throttle to step on and causing.
They are five years old, speed limiting system of the present invention also can receive and manually input speed limit as electric signal, to realize the control to the opening degree of control cock, reach the object at the uniform velocity travelled, the operation of navigating mate can be simplified, and beginner is also suitable for, the speed of a motor vehicle can be controlled in a safer velocity amplitude.
Although embodiment of the present invention are open as above, it is not restricted to listed in specification sheets and embodiment utilization.It can be applied to the various field being applicable to this practicality completely.For those skilled in the art, can easily realize other amendment.Therefore do not deviating under the universal that claim and equivalency range limit, this practicality is not limited to specific details and illustrates here and the legend described.
Claims (10)
1. a Car Automatic Speed Limit control system, is characterized in that, comprising:
Control unit, it comprises controller, ABS brake gear and is arranged on to control the control cock of gasoline flow on automobile oil supply line, and described ABS brake gear, control cock are all connected with described controller;
Signal gathering unit, it comprises the speed sensor for gathering automobile driving speed, gather the speed limit acquisition device of automobile current driving road segment speed limit and gather the travel direction of current automobile and the satellite positioning device of residing road conditions, and described speed sensor, speed limit acquisition device, satellite positioning device is all connected to controller, based on the signal received from speed sensor and speed limit acquisition device, wherein said controller judges whether current automobile exceeds the speed limit, and determine whether the opening degree of control cock and ABS brake gear start according to this decision signal and from the information that satellite positioning device gets.
2. Car Automatic Speed Limit control system as claimed in claim 1, it is characterized in that, described speed limit acquisition device comprises navigating instrument and the recognizer that is connected successively with navigating instrument and amplifier, the mouth of described amplifier, speed sensor is all connected to comparator, and the mouth of described comparator is connected to controller.
3., as right wants the Car Automatic Speed Limit control system as described in 2, it is characterized in that, described satellite positioning device obtain traffic information be present road situation information.
4. as right wants the Car Automatic Speed Limit control system as described in 3, it is characterized in that, described controller is also connected with compensation instrument, and described compensation instrument is connected with control cock.
5. adopt Car Automatic Speed Limit control system as described in claim 4 to a control method for automobile speed limit, it is characterized in that, comprise the following steps:
Step one, gathered the speed limit exporting the current velocity amplitude of automobile and current road segment respectively by described speed sensor, speed limit acquisition device, and to convert thereof into be the first electric signal and the second electric signal;
Step 2, receive the first electric signal and the second electric signal by described comparator, and the two is compared obtain a comparative result, and described comparative result is sent to controller;
Based on described comparative result, step 3, described controller judge whether automobile drives over the speed limit on current road segment, if then jump to step 4, otherwise returns step one;
Step 4, obtain the current residing road condition information of automobile by described satellite positioning device and be sent to controller;
Step 5, described controller are based on the road condition information received, to present road, whether there is the gradient to judge, if having, jump to step 6, otherwise send control signal according to result of determination to control cock, to determine the opening degree of control cock, and return step one;
Step 6, obtain automobile current driving direction information by described satellite positioning device and be sent to controller;
Step 7, described controller are based on the current travel direction information of the automobile received, the current uplink state that whether is in of automobile is judged, and according to result of determination to control cock or/and ABS brake system sends control signal, to determine the opening degree of control cock and whether to start ABS brake system, and return step one.
6. Car Automatic Speed Limit control system as claimed in claim 4 is to the control method of automobile speed limit, it is characterized in that, in described step one, recognizer in described speed limit acquisition device is identified current road segment speed limit numerical value by the speed limit voice signal that sends navigating instrument or the electronic chart be stored in navigating instrument, and convert thereof into corresponding electric signal, then be sent to comparator after electric signal being amplified by amplifier.
7. Car Automatic Speed Limit control system as claimed in claim 5 is to the control method of automobile speed limit, it is characterized in that, in described step 2, described comparator compares the first electric signal received and the second electric signal, if the value of the first electric signal is greater than the value of the second electric signal, then export 1 to controller, otherwise export 0; In described step 3, described controller receives the numerical value that comparator exports, and if numerical value is 1, then judges hypervelocity.
8. Car Automatic Speed Limit control system as claimed in claim 6 to automobile speed limit control method, it is characterized in that, in described step 5, described controller is based on the current residing road condition information of the automobile received, to the present road residing for automobile, whether there is the gradient by determination module disposed thereon to judge, if judged result is for having the gradient, then jump to step 6, otherwise described controller with the second electric signal for standard sends control signal to control cock, to determine that the opening degree of control cock realizes the speed limit to automobile driving speed.
9. Car Automatic Speed Limit control system as claimed in claim 7 is to the control method of automobile speed limit, it is characterized in that, in described step 7, whether described controller is in uplink state based on the motoring condition that the automobile received is current judges, if send control signal to control cock again after then being compensated secondary signal by described compensation instrument, to determine that the opening degree of control cock realizes the speed limit to automobile driving speed, and return step one.
10. the control method of Car Automatic Speed Limit control system automobile speed limit as claimed in claim 7, it is characterized in that, in described step 4, whether described controller is in uplink state based on the motoring condition that the automobile received is current judges, if not then with the second electric signal for standard sends control signal to control cock, start ABS brake system, to determine the opening degree of control cock and to realize, to the speed limit of automobile driving speed, returning step one by ABS brake system simultaneously.
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