CN106564374A - Vehicle speed control method and device - Google Patents
Vehicle speed control method and device Download PDFInfo
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- CN106564374A CN106564374A CN201610921102.6A CN201610921102A CN106564374A CN 106564374 A CN106564374 A CN 106564374A CN 201610921102 A CN201610921102 A CN 201610921102A CN 106564374 A CN106564374 A CN 106564374A
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- vehicle
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- monitoring
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K31/00—Vehicle fittings, acting on a single sub-unit only, for automatically controlling vehicle speed, i.e. preventing speed from exceeding an arbitrarily established velocity or maintaining speed at a particular velocity, as selected by the vehicle operator
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- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
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- Mechanical Engineering (AREA)
- Control Of Vehicle Engines Or Engines For Specific Uses (AREA)
- Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
Abstract
The invention discloses a vehicle speed control method. The vehicle speed control method comprises the following steps of monitoring running information of a vehicle in the vehicle running process; judging whether the running environment is not beneficial for vehicle running or not according to the running information; and if the running environment is not beneficial for vehicle running, limiting the highest rotation speed of an engine to a preset rotation speed and limiting highest vehicle speed through limiting the highest rotation speed; and if the running environment is beneficial for vehicle running, canceling the limitation if the highest rotation speed of the engine has been limited to the preset rotation speed. The invention further discloses a vehicle speed control device. According to the invention, due to different vehicle running environments, the highest speed of the vehicle is actively limited while the running environment is poor so that potential safety hazards are avoided. Meanwhile, while the running environment is good, the vehicle can be ensured to run at a high speed.
Description
Technical field
The present invention relates to automotive field, more particularly to car speed control method and device.
Background technology
At present, automobile is either travelled in the rain under different running environments in hill path or greatly, or in sunny height
Travel on fast road：It is the same that vehicle can reach maximum speed.But when running environment is bad, if human pilot is with a high speed
Travelled, easily caused traffic accident, to this vehicle driver and other vehicle drivers potential safety hazard is brought, and if
The max. speed of vehicle is set when dispatching from the factory, then vehicle can not be made to run at high speed when running environment is good.
The content of the invention
Present invention is primarily targeted at providing a kind of car speed control method, it is intended to limit vehicle in running environment not
Max. speed when good, it is to avoid potential safety hazard, ensures that vehicle be able to can run at high speed when running environment is good again.
For achieving the above object, a kind of car speed control method that the present invention is provided is comprised the following steps：
In vehicle travel process, the driving information of vehicle is monitored；
Judge whether running environment is unfavorable for that vehicle is travelled according to the driving information；
If so, the maximum speed for then limiting electromotor is preset rotation speed, and by limiting the maximum speed highest car is limited
Speed；
If if it is not, the maximum speed of the electromotor has been limited to the preset rotation speed, cancelling the restriction.
Preferably, described in vehicle travel process, monitoring the driving information of vehicle includes：The control electricity of monitoring wiper
The run signal that road is transmitted；
It is described to judge whether running environment is unfavorable for that vehicle traveling includes according to the driving information：When scraping water according to described
When the run signal that the control circuit of device is transmitted judges the wipers duration more than the first preset duration, it is judged as YES.
Preferably, described in vehicle travel process, monitoring the driving information of vehicle includes：The car that monitoring gyroscope is transmitted
The information of track angle；
It is described to judge whether running environment is unfavorable for that vehicle traveling includes according to the driving information：When according to the gyro
The information of the vehicle running surface angle that instrument is transmitted judges the road surface angle more than a predetermined angle and to be continued above second pre-
If during duration, being judged as YES.
Preferably, described in vehicle travel process, monitoring the driving information of vehicle includes：Monitoring drive recorder shoots
Real time imaging；
It is described to judge whether running environment is unfavorable for that vehicle traveling includes according to the driving information：When according to the every trade
When the real time imaging that car monitor shoots judges rainy or mist in the real time imaging, it is judged as YES.
Preferably, the maximum speed for limiting electromotor is preset rotation speed, is limited most by limiting the maximum speed
High speed includes：
Restricting signal is sent to engine management system；
When the rotating speed of the electromotor is higher than the preset rotation speed, reduced by reducing the distributive value of the electromotor
The rotating speed of the electromotor.
Additionally, for achieving the above object, the present invention also provides a kind of vehicle speed control device, the car speed control
Device includes：
Monitoring modular, in vehicle travel process, monitoring the driving information of the vehicle；
Judge module, for judging whether running environment is unfavorable for that vehicle is travelled according to the driving information；
Speed limit module, when judging that running environment is unfavorable for vehicle traveling according to the driving information for obtaining the vehicle
When, the maximum speed for limiting electromotor is preset rotation speed, and by limiting the maximum speed max. speed is limited；
Cancel module, when judging that running environment is not unfavorable for vehicle row according to the driving information for obtaining the vehicle
Sail, and the maximum speed of the electromotor is when having been limited to preset rotation speed, then cancel the restriction.
Preferably, the monitoring modular includes：First monitoring means, the fortune that the control circuit for monitoring wiper is transmitted
Row signal；
The judge module includes：First judging unit, for when the fortune transmitted according to the control circuit of the wiper
When row signal judges the wipers duration more than the first preset duration, it is judged as YES.
Preferably, the monitoring modular includes：Second monitoring means, for monitoring the vehicle running surface that gyroscope is transmitted
The information of angle；
The judge module includes：Second judging unit, for when the vehicle running surface transmitted according to the gyroscope
When the information of angle judges the road surface angle more than a predetermined angle and is continued above the second preset duration, it is judged as YES.
Preferably, the monitoring modular includes：3rd monitoring means, for monitoring the real-time figure of drive recorder shooting
Picture；
The judge module includes：3rd judging unit, for when the real-time figure shot according to the row drive recorder
As judging during rainy or mist in the real time imaging, to be judged as YES.
Preferably, the speed limit module includes：
Transmitting element, for sending restricting signal to engine management system；
Reduction unit, when the rotating speed of the electromotor is higher than the preset rotation speed, by the spray for reducing the electromotor
Oil mass is reducing the rotating speed of the electromotor.
The present invention is by vehicle travel process, monitoring the driving information of vehicle；Judged to go according to the driving information
Sail whether environment is unfavorable for that vehicle is travelled；If so, then limit electromotor maximum speed be preset rotation speed, by limit described in most
High rotating speed limits max. speed；If if it is not, the maximum speed of the electromotor has been limited to the preset rotation speed, taken
Disappear the restriction.So that according to different vehicle running environments, the highest of vehicle is actively limited when running environment is bad
Speed, it is to avoid potential safety hazard.Simultaneously when running environment is good, it is ensured that vehicle can run at high speed.
Description of the drawings
Fig. 1 is the schematic flow sheet of the embodiment of car speed control method one of the present invention；
Fig. 2 is the schematic flow sheet of another embodiment of car speed control method of the present invention；
Fig. 3 is the high-level schematic functional block diagram of the embodiment of car speed device one of the present invention；
Fig. 4 is the refinement high-level schematic functional block diagram that module is limited in another embodiment of car speed device of the present invention.
The realization of the object of the invention, functional characteristics and advantage will be described further referring to the drawings in conjunction with the embodiments.
Specific embodiment
It should be appreciated that specific embodiment described herein is not intended to limit the present invention only to explain the present invention.
The present invention provides a kind of car speed control method, real in car speed control method of the present invention first with reference to Fig. 1
In applying example, the car speed control method includes：
Step S10, in vehicle travel process, monitors the driving information of vehicle；
Step S20, judges whether running environment is unfavorable for that vehicle is travelled according to the driving information；
Judge whether the vehicle running environment is conducive to vehicle to travel by the analysis to the driving information, for example, sentence
Whether the running environment that breaks is rainy day or dense fog.
If judge that running environment is unfavorable for that vehicle is travelled according to the driving information for obtaining the vehicle, step is performed
Rapid S30, the maximum speed for limiting electromotor is preset rotation speed, and by limiting the maximum speed max. speed is limited；
It is of the invention using the electromotor for actively limiting vehicle in order to safer when running environment is unfavorable for that vehicle is travelled
Maximum speed limiting the max speed of vehicle, it is to avoid cause safe thing because running at high speed when vehicle running environment is not good
Therefore.
If judging that running environment is not unfavorable for that vehicle is travelled according to the driving information for obtaining the vehicle, perform
Step S40, if the maximum speed of the electromotor has been limited to the preset rotation speed, cancels the restriction.
When vehicle running environment does not have dangerous, if limited the maximum speed of electromotor, should
The max. speed for cancelling vehicle is limited, it is ensured that user can run at high speed, and not processed if not limiting.
Specifically：When vehicle is when there is the road traveling of accumulated snow, by the driving information for monitoring the vehicle, the traveling
When presentation of information vehicle does not stop to skid, then confirm that running environment is unfavorable for that vehicle is travelled.It is 2000 to limit engine peak speed
Rev/min, 40 kilometers/hour of corresponding speed so that vehicle will not run at high speed；When not judged according to driving information
When the vehicle is travelled in snow, then check whether the maximum speed of electromotor is limited, cancel if being limited and sending out
Motivation maximum speed is the restriction of 2000 rev/min so that vehicle energy high-ball.The present embodiment allow vehicle according to
Different running environments, automatically selects different max. speed, that is, safety when ensure that running environment is bad in turn ensure that
Vehicle can run at high speed when running environment is good.
Based on car speed control method first embodiment of the present invention, implement in car speed control method of the present invention second
In example, step S10 includes：The run signal that the control circuit of monitoring wiper is transmitted；
Observation circuit is arranged by the control circuit to automobile wiper, first is just sent when the wipers electric
Ordinary mail number, in working order lower timing sends second electrical level signal, and when the wiper power cut-off the 3rd level is just sent
Signal, by the time difference of the appearance of three level signal and the first level signal the time of the wipers is judged.
In some embodiments, when wiper is started working, just transmission level signal, and last till that wiper stops work
Make, the working time of the wiper is calculated according to the level signal persistence length.
Step S20 includes：Water is scraped described in judging when the run signal transmitted according to the control circuit of the wiper
When device operating time is more than the first preset duration, it is judged as YES.
When the wipers duration is more than a preset duration, it is believed that vehicle in the rain or affect drive
Travel in the environment of member's sight line.Specifically：The first default time is 2 minutes, when the wiper is started working, institute
The first level signal for representing beginning that the control circuit of wiper sends is stated, then every 20 seconds, the monitoring electricity is received
The second electrical level signal that the expression that road is transmitted is working, when receive for the 3rd time be the three level signal for representing end when,
The time that whole wiper unlatching can be obtained is not above 2 minutes, judges that the running environment is not unfavorable for the vehicle
Traveling, then check whether the maximum speed of electromotor is limited, and the highest that the electromotor is released if being limited turns
Speed limit system；As described above, if when just receiving three level signal the 20th time, can obtain that whole wiper opens when
Between already exceed 2 minutes, then judge that the vehicle running environment is unfavorable for vehicle traveling, the electromotor is limited immediately
Maximum speed be 2000 rev/min, limit max. speed, it is to avoid cause vehicle accident because of high vehicle speeds.
Based on car speed control method first embodiment of the present invention, implement in car speed control method the 3rd of the present invention
In example, step S10 includes：The information of the vehicle running surface angle that monitoring gyroscope is transmitted；
Step S20 includes：Described in judging when the information of the vehicle running surface angle transmitted according to the gyroscope
When road surface angle is more than a predetermined angle and is continued above the second preset duration, it is judged as YES.
Specifically：One predetermined angle is 20 degree, and second Preset Time is 60 seconds, while the gyroscope also has
The ability of detecting vehicle turning data, when the Ackermann steer angle, default number of turns is：Turn over less than certain angle for 10 times
Turn, described turn of certain angle is 140 degree, the traveling angle of more specifically described vehicle in the second Preset Time, the top
The data of a preset percentage are exceeded in the information that spiral shell instrument is transmitted, vehicle receives under steam, persistently the gyroscope and sends
Angle information, the gyroscope is checked vehicle and is travelled 61 seconds with 21 degree of the elevation angle or with 21 degree of the angle of depression, more specifically when 61
90% data display vehicle carries out 21 degree of upward slope or descent run really in the information that the gyroscope is transmitted in second, then limit
Make the electromotor maximum (top) speed be 2000 rev/min, in the case where continuing to monitor, if the gyroscope check vehicle with
19 degree of the elevation angle or the angle of depression travel 61 seconds, then the 2000 rev/min rotating speeds for cancelling the electromotor are limited；Institute ought also be detected
State vehicle had 11 number of times for being less than 140 degree of turning in 60 seconds, then it is assumed that vehicle row in the environment for driving is unfavorable for
Sail, the maximum (top) speed for limiting the electromotor is 2000 rev/min.So that it is excessive turning, or in the rain, or also can in hill path
Engine peak speed is actively limited, to limit vehicle max. speed, it is ensured that safety.
Based on car speed control method first embodiment of the present invention, implement in car speed control method the 4th of the present invention
In example, step S10 includes：The real time imaging that monitoring drive recorder shoots；
Step S20 includes：When the real time imaging shot according to the row drive recorder judges the real time imaging
During middle rainy or mist, it is judged as YES.
Using the picture of drive recorder captured in real-time, high-frequency image acquisition is carried out to picture, every width picture is entered
Row sampling analyses, judge vehicle running environment, such as if many many bright spots, then may be considered in the rainy day in image,
Can determine whether to be yes.
Specifically：When vehicle is when travelling in the rain, picture of the drive recorder in a Preset Time is entered
Row sampling, continuously carried out sampling analyses, when picture fixed area per 30 seconds more particularly in five minutes to the picture
When all there are a large amount of bright spots, judgement is to travel in the rain；If large area canescence background occurs in picture, judgement is in mist
Middle traveling.The maximum (top) speed for actively limiting the electromotor is 2000 rev/min, in the case where continuing to monitor, if in five minutes
Continuously sampling analyses are carried out to the picture per 30 seconds, when the bright spot or canescence background of picture fixed area disappear, then taken
Disappear the electromotor 2000 rev/min rotating speeds limit.Enable actively to limit engine peak speed in the rainy day, to limit
Vehicle max. speed, it is ensured that safety.
It should be noted that in some embodiments for the picture more conducively analyzed, sampling picture can be being shot
When, strong illumination is carried out to the local of picture detection zone using collimated light beam, make the raindrop for photographing easily identified.
Fig. 2 is refer to, based on car speed control method first embodiment of the present invention, in car speed controlling party of the present invention
In the embodiment of method the 5th, when the running environment has is unfavorable for that vehicle is travelled, the maximum speed of the restriction electromotor is pre-
If rotating speed, included by limiting the maximum speed restriction max. speed：
Step S31, sends restricting signal to engine management system；
The method for reducing the engine speed is a lot, and having passively reduce the air inflow or capacity, but in order to
Protection electromotor, takes using the engine management system or ECU (Electronic Control Unit：Electronic Control
Unit) reduction rotating speed is actively carried out controlling the electromotor.
Step S32, when the rotating speed of the electromotor is higher than the preset rotation speed, by the oil spout for reducing the electromotor
Measure to reduce the rotating speed of the electromotor.
Specifically：The restricting signal for meeting CAN protocol is sent to the engine management system by CAN.Work as institute
When stating engine speed and go to 2000 rev/min, the engine management system actively adjusts the electromotor, reduces spray
Oil, reduces the rotating speed of the electromotor, the normal oil spout started again after speed is dropped under 2000 rev/min so that described
Motivation rotating speed, so as to also limit max. speed, limits vehicle when running environment is bad not over 2000 rev/min
Maximum speed, it is ensured that safety.
The present invention also provides a kind of vehicle speed control device, with reference to Fig. 3, in car speed control method first of the present invention
In embodiment, the vehicle speed control device includes：
Monitoring modular 10, in vehicle travel process, monitoring the driving information of the vehicle；
Judge module 20, for judging whether running environment is unfavorable for that vehicle is travelled according to the driving information；
Judge whether the vehicle running environment is conducive to vehicle to travel by the analysis to the driving information, for example, sentence
Whether the running environment that breaks is the rainy day, dense fog.
Speed limit module 30, when judging that running environment is unfavorable for vehicle traveling according to the driving information for obtaining the vehicle
When, the maximum speed for limiting electromotor is preset rotation speed, and by limiting the maximum speed max. speed is limited；
It is of the invention using the electromotor for actively limiting vehicle in order to safer when running environment is unfavorable for that vehicle is travelled
Maximum speed limiting the max speed of vehicle, it is to avoid cause safe thing because running at high speed when vehicle running environment is not good
Therefore.
Cancel module 40, when judging that running environment is not unfavorable for vehicle according to the driving information for obtaining the vehicle
Traveling, and the maximum speed of the electromotor is when having been limited to preset rotation speed, then cancel the restriction.
When vehicle running environment does not have dangerous, if limited the maximum speed of electromotor, should
The max. speed for cancelling vehicle is limited, it is ensured that user can run at high speed, and not processed if not limiting.
Specifically：When vehicle is when there is the road traveling of accumulated snow, the row of the vehicle is monitored by the monitoring modular 10
Information is sailed, when the judge module 20 judges that vehicle does not stop to skid according to the driving information, then confirms that running environment is unfavorable for
Vehicle is travelled, and start the speed limit module 30 to limit engine peak speed is 2000 rev/min, and corresponding speed 40 is public
In/hour so that vehicle will not run at high speed；When the judge module 20 does not judge that the vehicle exists according to driving information
When travelling in snow, then start cancellation module 40 and check whether the maximum speed of electromotor is limited, and is taken if being limited
The engine peak speed that disappears is the restriction of 2000 rev/min.Enable vehicle high-ball.The present embodiment causes the vehicle can be with
According to different running environments, different max. speed are automatically selected, that is, safety when ensure that running environment is bad is protected again
Having demonstrate,proved vehicle can run at high speed when running environment is good.
Based on vehicle speed control device first embodiment of the present invention, implement in vehicle speed control device of the present invention second
In example, the monitoring modular 10 includes：First monitoring means, the run signal that the control circuit for monitoring wiper is transmitted；
Observation circuit is arranged by the control circuit to automobile wiper, first is just sent when the wipers electric
Ordinary mail number, in working order lower timing sends second electrical level signal, and when the wiper power cut-off the 3rd level is just sent
Signal, by the time difference of the appearance of three level signal and the first level signal the time of the wipers is judged.
In some embodiments, when wiper is started working, just transmission level signal, and last till that wiper stops work
Make, the working time of the wiper is calculated according to the level signal persistence length.
The judge module 20 includes：First judging unit, for working as what is transmitted according to the control circuit of the wiper
When run signal judges the wipers duration more than the first preset duration, it is judged as YES.
When the wipers duration is more than a preset duration, it is believed that vehicle in the rain or affect drive
Travel in the environment of member's sight line.Specifically：The first default time is 2 minutes, when the wiper is started working, institute
The first level signal for representing beginning that the control circuit of wiper sends is stated, then every 20 seconds, first monitoring means
The second electrical level signal that the expression that the observation circuit transmits is working is received, is connect for the 3rd time when first monitoring means
Receive be the three level signal for representing end when, can obtain the time that whole wiper opens is not above 2 minutes, institute
State the first judging unit and judge that the running environment is not unfavorable for the vehicle traveling, then checking the maximum speed of electromotor is
No to be limited, the maximum speed that the electromotor is released if being limited is limited；As described above, if the 20th institute
When stating the first monitoring means and just receiving three level signal, can obtain the time that whole wiper opens alreadys exceed 2 points
Clock, then first judging unit judge that the vehicle running environment is unfavorable for vehicle traveling, described sending out is limited immediately
The maximum speed of motivation is 2000 rev/min, limits max. speed, it is to avoid cause traffic thing because of high vehicle speeds
Therefore.
Based on vehicle speed control device first embodiment of the present invention, implement in vehicle speed control device of the present invention 3rd
In example, the monitoring modular 10 includes：Second monitoring means, for monitoring the letter of the vehicle running surface angle that gyroscope is transmitted
Breath；
The judge module 20 includes：Second judging unit, for travelling road when the vehicle transmitted according to the gyroscope
When the information of face angle degree judges the road surface angle more than a predetermined angle and is continued above the second preset duration, it is judged as YES.
Specifically：One predetermined angle is 20 degree, and second Preset Time is 60 seconds, while the gyroscope also has
The ability of detecting vehicle turning data, when the Ackermann steer angle, default number of turns is：Turn over less than certain angle for 10 times
Turn, described turn of certain angle is 140 degree, the traveling angle of more specifically described vehicle in the second Preset Time, the top
The data of a preset percentage are exceeded in the information that spiral shell instrument is transmitted, vehicle under steam, persistently receive by second monitoring means
To the angle information that the gyroscope sends, the gyroscope checks vehicle and travels 61 with 21 degree of the elevation angle or with 21 degree of the angle of depression
Second, more specifically the data display vehicle when in the information that the gyroscope in 61 seconds is transmitted 90% carries out 21 degree of upward slope really
Or descent run, then the second judging unit judge the vehicle be unfavorable for travel running environment in, then limit described in start
The maximum (top) speed of machine is 2000 rev/min, in the case where second monitoring means are continued to monitor, if the gyroscope is checked
Vehicle judges the vehicle in the traveling for not being unfavorable for travelling with the elevation angle or 19 degree of angle of depression traveling 61 seconds, then the second judging unit
In environment, then the 2000 rev/min rotating speeds for cancelling the electromotor are limited；Also when second monitoring means detect institute
State vehicle had 11 number of times for being less than 140 degree of turning in 60 seconds, then it is assumed that vehicle row in the environment for driving is unfavorable for
Sail, then the second judging unit judges the vehicle in the running environment for travelling is unfavorable for, the maximum for limiting the electromotor turns
Speed is 2000 rev/min so that excessive turning, or in the rain, or also engine peak speed can be actively limited in hill path, with
Limit vehicle max. speed, it is ensured that safety.
Based on vehicle speed control device first embodiment of the present invention, implement in vehicle speed control device of the present invention 4th
In example, the monitoring modular 10 includes：3rd monitoring means, for monitoring the real time imaging of drive recorder shooting；
The judge module 20 includes：3rd judging unit, for real-time when what is shot according to the row drive recorder
When image judges rainy or mist in the real time imaging, it is judged as YES.
Using the picture of drive recorder captured in real-time, high-frequency image acquisition is carried out to picture, every width picture is entered
Row sampling analyses, judge vehicle running environment, such as if many many bright spots, then may be considered in the rainy day in image,
Can determine whether to be yes.
Specifically：When vehicle is when travelling in the rain, picture of the drive recorder in a Preset Time is entered
Row sampling, more particularly described 3rd monitoring means continuously carried out sampling analyses per 30 seconds in five minutes to the picture,
When a large amount of bright spots of all appearance of picture fixed area, judgement is to travel in the rain；If there is the large area canescence back of the body in picture
Jing Shi, then judge it is to move through a fog.The maximum (top) speed for actively limiting the electromotor is 2000 rev/min, is persistently being supervised
Under survey, if the 3rd monitoring means continuously carried out sampling analyses per 30 seconds in five minutes to the picture, the described 3rd sentences
Disconnected unit judges when the bright spot or canescence background of picture fixed area disappear, then cancel 2000 turns of the electromotor/it is every
Minute rotating speed is limited so that engine peak speed can be actively limited in the rainy day, to limit vehicle max. speed, it is ensured that peace
Entirely.
It should be noted that in some embodiments for the picture more conducively analyzed, sampling picture can be being shot
When, strong illumination is carried out to the local of picture detection zone using collimated light beam, make the raindrop that photograph easily identified.
Fig. 4 is refer to, based on vehicle speed control device first embodiment of the present invention, is filled in car speed of the present invention control
In putting the 5th embodiment, the speed limit module 30 includes：
Transmitting element 31, for sending restricting signal to engine management system；
The method for reducing the engine speed is a lot, and having passively reduce the air inflow or capacity, but in order to
Protection electromotor, takes using the engine management system or ECU (Electronic Control Unit：Electronic Control
Unit) reduction rotating speed is actively carried out controlling the electromotor.
Reduction unit 32, when the rotating speed of the electromotor is higher than the preset rotation speed, by reducing the electromotor
Distributive value is reducing the rotating speed of the electromotor.
Specifically：The transmitting element 31 sends the restricting signal for meeting CAN protocol to the electromotor by CAN
Management system.When the engine speed goes to 2000 rev/min, the engine management system starts the reduction of speed
Unit 32 adjusts the electromotor, reduces oil spout, reduces the rotating speed of the electromotor, after speed is dropped under 2000 rev/min
The normal oil spout for starting again so that the engine speed not over 2000 rev/min, so as to also limit highest car
Speed, limits maximum speed of the vehicle when running environment is bad, it is ensured that safety.
The preferred embodiments of the present invention are these are only, the scope of the claims of the present invention is not thereby limited, it is every using this
Equivalent structure or equivalent flow conversion that bright description and accompanying drawing content are made, or directly or indirectly it is used in other related skills
Art field, is included within the scope of the present invention.
Claims (10)
1. a kind of car speed control method, it is characterised in that the car speed control method is comprised the following steps：
In vehicle travel process, the driving information of vehicle is monitored；
Judge whether running environment is unfavorable for that vehicle is travelled according to the driving information；
If so, the maximum speed for then limiting electromotor is preset rotation speed, and by limiting the maximum speed max. speed is limited；
If if it is not, the maximum speed of the electromotor has been limited to the preset rotation speed, cancelling the restriction.
2. car speed control method as claimed in claim 1, it is characterised in that described in vehicle travel process, monitoring car
Driving information include：The run signal that the control circuit of monitoring wiper is transmitted；
It is described to judge whether running environment is unfavorable for that vehicle traveling includes according to the driving information：When according to the wiper
When the run signal that control circuit is transmitted judges the wipers duration more than the first preset duration, it is judged as YES.
3. car speed control method as claimed in claim 1, it is characterised in that described in vehicle travel process, monitoring car
Driving information include：The information of the vehicle running surface angle that monitoring gyroscope is transmitted；
It is described to judge whether running environment is unfavorable for that vehicle traveling includes according to the driving information：When according to gyroscope biography
Come vehicle running surface angle information judge the road surface angle more than a predetermined angle and be continued above second preset when
When long, it is judged as YES.
4. car speed control method as claimed in claim 1, it is characterised in that described in vehicle travel process, monitoring car
Driving information include：The real time imaging that monitoring drive recorder shoots；
It is described to judge whether running environment is unfavorable for that vehicle traveling includes according to the driving information：When according to every trade car note
When the real time imaging that record instrument shoots judges rainy or mist in the real time imaging, it is judged as YES.
5. the car speed control method as described in any one of Claims 1-4, it is characterised in that the restriction electromotor is most
High rotating speed is preset rotation speed, is included by limiting the maximum speed restriction max. speed：
Restricting signal is sent to engine management system；
When the rotating speed of the electromotor is higher than the preset rotation speed, reduced by reducing the distributive value of the electromotor described
The rotating speed of electromotor.
6. a kind of vehicle speed control device, it is characterised in that the vehicle speed control device includes：
Monitoring modular, in vehicle travel process, monitoring the driving information of the vehicle；
Judge module, for judging whether running environment is unfavorable for that vehicle is travelled according to the driving information；
Speed limit module, when judging that running environment is unfavorable for that vehicle is travelled according to the driving information for obtaining the vehicle, limit
The maximum speed of electromotor processed is preset rotation speed, and by limiting the maximum speed max. speed is limited；
Cancel module, when judging that running environment is not unfavorable for vehicle traveling according to the driving information for obtaining the vehicle,
And the maximum speed of the electromotor is when having been limited to preset rotation speed, then cancel the restriction.
7. vehicle speed control device as claimed in claim 6, it is characterised in that the monitoring modular includes：First monitoring is single
Unit, the run signal that the control circuit for monitoring wiper is transmitted；
The judge module includes：First judging unit, for believing when the operation transmitted according to the control circuit of the wiper
When number judging the wipers duration more than the first preset duration, it is judged as YES.
8. vehicle speed control device as claimed in claim 6, it is characterised in that the monitoring modular includes：Second monitoring is single
Unit, for monitoring the information of the vehicle running surface angle that gyroscope is transmitted；
The judge module includes：Second judging unit, for when the vehicle running surface angle transmitted according to the gyroscope
Information judge that the road surface angle, more than a predetermined angle and when being continued above the second preset duration, is judged as YES.
9. vehicle speed control device as claimed in claim 6, it is characterised in that the monitoring modular includes：3rd monitoring is single
Unit, for monitoring the real time imaging of drive recorder shooting；
The judge module includes：3rd judging unit, for sentencing when the real time imaging shot according to the row drive recorder
In the disconnected real time imaging during rainy or mist, it is judged as YES.
10. the vehicle speed control device as described in any one of claim 6 to 9, it is characterised in that the speed limit module includes：
Transmitting element, for sending restricting signal to engine management system；
Reduction unit, when the rotating speed of the electromotor is higher than the preset rotation speed, by the distributive value for reducing the electromotor
To reduce the rotating speed of the electromotor.
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| CN201610921102.6A CN106564374B (en) | 2016-10-20 | 2016-10-20 | Vehicle speed control method and device |
| PCT/CN2017/071866 WO2018072357A1 (en) | 2016-10-20 | 2017-01-20 | Vehicle speed control method and device |
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| CN201610921102.6A CN106564374B (en) | 2016-10-20 | 2016-10-20 | Vehicle speed control method and device |
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| CN108248385A (en) * | 2017-12-25 | 2018-07-06 | 长沙中联消防机械有限公司 | Adaptive method for limiting speed, system and track fire fighting truck under complex environment |
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| CN109501593A (en) * | 2018-11-28 | 2019-03-22 | 安徽合力股份有限公司 | A kind of modular cart speed limit system and method for fork truck |
| CN111186442B (en) * | 2020-01-13 | 2022-06-24 | 惠龙易通国际物流股份有限公司 | Vehicle control method and device |
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| CN106564374B (en) | 2020-11-13 |
| WO2018072357A1 (en) | 2018-04-26 |
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