CN110435533A - Rear car alarm set and method when a kind of automatic emergency brake system works - Google Patents
Rear car alarm set and method when a kind of automatic emergency brake system works Download PDFInfo
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- CN110435533A CN110435533A CN201910720282.5A CN201910720282A CN110435533A CN 110435533 A CN110435533 A CN 110435533A CN 201910720282 A CN201910720282 A CN 201910720282A CN 110435533 A CN110435533 A CN 110435533A
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- lamp
- driving circuit
- automatic emergency
- brake
- brake system
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
- B60Q1/00—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor
- B60Q1/26—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to indicate the vehicle, or parts thereof, or to give signals, to other traffic
- B60Q1/44—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to indicate the vehicle, or parts thereof, or to give signals, to other traffic for indicating braking action or preparation for braking, e.g. by detection of the foot approaching the brake pedal
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Lighting Device Outwards From Vehicle And Optical Signal (AREA)
Abstract
The present invention relates to the rear car alarm sets and method when a kind of work of automatic emergency brake system, which is characterized in that including flash driving circuit, brake switch and Brake lamp/AEB work warning lamp, wherein the flash driving circuit is P-channel metal-oxide-semiconductor;The output end of the grid connection automatic emergency brake system of the flash driving circuit;The anode of the drain electrode connection power supply of the flash driving circuit, the cathode ground connection of the power supply;The sources connected in parallel of the flash driving circuit connects the brake switch and Brake lamp/AEB work warning lamp one end, the other end of the brake switch connects the power supply, the Brake lamp/AEB work warning lamp other end ground connection, the flash driving circuit is used for the level-one pre-warning signal exported according to the automatic emergency brake system, it controls the Brake lamp/AEB work warning lamp by the brake switch to open or close, the present invention can be widely applied in the intelligent vehicles technology field.
Description
Technical field
The present invention relates to a kind of rear car alarm set and methods, specifically about a kind of automatic emergency brake system (AEB)
Rear car alarm set and method when work, belong to the intelligent vehicles technology field.
Background technique
With the development of intelligence auxiliary driving and automatic Pilot, has a large amount of vehicle installation intelligence auxiliary driving system now
System, and automatic emergency brake system undoubtedly installs most auxiliary at present and drives product, which is not only able to touching
It reminds driver to take measures when hitting danger, also brake regulation can be actively carried out in driver's response lag, to prevent from touching
It hits or the severity of reducing collisions, the maximized safety for guaranteeing occupant and the person of driving.
However, existing AEB system not can control Brake lamp at work, so that no AEB system followed by
Vehicle can not judge the anxious deceleration behavior of vehicle and cause the collision accident that occur.Meanwhile some AEB systems are not complete enough
It is kind, there can be some brake operatings entered by mistake through, this will cause the deceleration behavior for being more difficult to judge for rear car, to cause tight
The rear-end collision of weight.In addition, daily more vehicles in following vehicle, often will appear traveling intermediate vehicle is later determine before
Although the deceleration situations of vehicle and while carrying out emergency braking, are avoided knocking into the back with front truck, but collided the feelings of front truck after car rear-end again
Condition.
Summary of the invention
In view of the above-mentioned problems, the object of the present invention is to provide one kind can control Brake lamp, with reduce the probability that knocks into the back from
Rear car alarm set and method when dynamic emergency braking system work.
To achieve the above object, the present invention takes following technical scheme: after when a kind of automatic emergency brake system works
Vehicle alarm set, which is characterized in that including flash driving circuit, brake switch and Brake lamp/AES work warning lamp, wherein institute
Stating flash driving circuit is P-channel metal-oxide-semiconductor;The output of the grid connection automatic emergency brake system of the flash driving circuit
End;The anode of the drain electrode connection power supply of the flash driving circuit, the cathode ground connection of the power supply;The flash driving circuit
Sources connected in parallel connects the brake switch and Brake lamp/AES work warning lamp one end, the other end connection of the brake switch
The power supply, the other end ground connection of the Brake lamp/AES work warning lamp, the flash driving circuit be used for according to it is described from
The level-one pre-warning signal of dynamic emergency braking system output controls the Brake lamp/AES work warning lamp by the brake switch
Open or close.
A kind of automatic emergency brake system work when rear car alarm set, which is characterized in that including braking lamp controller,
Brake switch and Brake lamp/AES work warning lamp, wherein the braking lamp controller includes microcontroller and flash driving electricity
Road, the flash driving circuit are P-channel metal-oxide-semiconductor;The input terminal of the microcontroller connects the defeated of automatic emergency brake system
Outlet, the output end of the microcontroller connect the grid of the flash driving circuit;The drain electrode of the flash driving circuit connects
Connect the anode of power supply, the cathode ground connection of the power supply;The sources connected in parallel of the flash driving circuit connect the brake switch and
Brake lamp/AES work warning lamp one end, the other end of the brake switch connect the power supply, the Brake lamp/AES work
Make the other end ground connection of warning lamp, the microcontroller is used for according to the level-one early warning exported by the automatic emergency brake system
Signal and front truck speed signal judge algorithm using front truck deceleration, by the flash driving circuit through the brake switch control
The Brake lamp/AES work warning lamp is made to open or close.
Further, the input terminal of the microcontroller connects the defeated of the automatic emergency brake system by CAN bus
Outlet.
Further, parameter setting module, data reception module and front truck deceleration judgement are provided in the microcontroller
Module;The parameter setting module is for presetting deceleration regime threshold value;The data reception module for receive it is described from
The level-one alarm signal and front truck speed signal that dynamic emergency braking system is sent;The front truck deceleration judgment module is used for according to one
Grade alarm signal, front truck speed signal and preset deceleration regime threshold value, by the brake switch control the Brake lamp/
AEB work warning lamp is lighted or is flashed.
Further, the deceleration regime threshold value includes speed threshold value and deceleration duration threshold value.
Rear car based reminding method when a kind of automatic emergency brake system works, which is characterized in that including the following contents: 1) originally
The deceleration regime of the automatic emergency brake system real-time detection front truck of vehicle, when automatic emergency brake system detect this vehicle with
When front truck has risk of collision, output level-one pre-warning signal to microcontroller;2) automatic emergency brake system also passes through output front truck
Speed signal is to microcontroller;3) microcontroller is according to level-one alarm signal, front truck speed signal and preset deceleration regime threshold
Value judges algorithm using front truck deceleration, lights or flashes by brake switch control Brake lamp/AES work warning lamp.
Further, the deceleration regime threshold value includes speed threshold value and deceleration duration threshold value.
Further, the detailed process of the step 4) are as follows: 4.1) microcontroller is according to level-one alarm signal, front truck speed
Signal and preset deceleration regime threshold value, the deceleration regime of real-time detection front truck, when automatic emergency brake system does not export one
Grade alarm signal, and when the speed signal of front truck reaches preset speed threshold value without reaching preset deceleration duration threshold value,
Microcontroller controls Brake lamp/AES work warning lamp fast blink through brake switch by flash driving circuit;4.2) when automatic
Emergency braking system does not export level-one alarm signal, and the speed signal of front truck reaches preset speed threshold value and deceleration simultaneously
When duration threshold value, microcontroller controls Brake lamp/AES work warning lamp through brake switch by flash driving circuit and dodges at a slow speed
It is bright;4.3) when automatic emergency brake system exports level-one alarm signal, microcontroller is by flash driving circuit through brake switch
Control Brake lamp/AEB work warning lamp is lighted.
The invention adopts the above technical scheme, which has the following advantages: 1, the present invention is when the vehicle equipped with AEB system
When intervention automatic emergency brake (either normal intervention or abnormal intervention), braking lamp/AEB work police can be automatically controlled
Show that lamp is lighted, to remind rear car driver's front truck to come into AEB braking, to reduce the probability to knock into the back.2, the present invention also adopts
Algorithm is judged with front truck deceleration, it, also can be by the shape that slows down even if the deceleration regime of front truck does not make AEB system intervene control for brake
State passes to rear car, enables rear car by judging that the deceleration regime of front truck reminds rear car to slow down in real time in due course, reaches same
Reduction knock into the back the effect of probability, can be widely applied in the intelligent vehicles technology field.
Detailed description of the invention
Fig. 1 is the principle of the present invention schematic diagram;
Fig. 2 is the structural schematic diagram of the embodiment of the present invention 1;
Fig. 3 is the structural schematic diagram of the embodiment of the present invention 2;
Fig. 4 is the flow chart of the method for the present invention.
Specific embodiment
Come to carry out detailed description to the present invention below in conjunction with attached drawing.It should be appreciated, however, that attached drawing has been provided only more
Understand the present invention well, they should not be interpreted as limitation of the present invention.
It is as shown in Figure 1 the principle of the present invention schematic diagram, when being equipped with the vehicle detection of AEB system 1 to the deceleration of front truck
When state, algorithm is judged by the level-one early warning of AEB system 1 or front truck deceleration, the reduce-speed sign of front truck is inputted, controls Brake lamp
It lights, so that rear car be reminded to slow down.
Embodiment 1:
Based on the above principles, as shown in Fig. 2, for traditional braking lamp, increase flash driving electricity all the way in AEB system 1
The active control to Brake lamp can be completed in road 2, and therefore, rear car when automatic emergency brake system provided by the invention works mentions
Awake device, including flash driving circuit 2, brake switch 3 and Brake lamp/AEB work warning lamp 4, wherein flash driving circuit 2
For P-channel metal-oxide-semiconductor.
The output end of the grid connection AEB system 1 of flash driving circuit 2, the drain electrode connection vehicle of flash driving circuit 2
The anode of power supply 5, the cathode ground connection of power supply 5.The sources connected in parallel connection brake switch 3 and Brake lamp/AEB of flash driving circuit 2
One end of work warning lamp 4, the other end of brake switch 3 connect power supply 5, another termination of Brake lamp/AEB work warning lamp 4
Ground, flash driving circuit 2 are used for the level-one pre-warning signal that export according to AEB system 1, by the control of brake switch 3 Brake lamp/
AEB work warning lamp 4 opens or closes.
Embodiment 2:
Based on the above principles, as shown in figure 3, AEB system 1 for not can increase flash driving circuit 2, individually designed system
The controller of dynamic lamp or AEB work warning lamp 4 passes through the level-one pre-warning signal that CAN bus 6 issues by AEB system 1 to respond, into
And the light on and off of Brake lamp or AEB work warning lamp 4 are controlled, therefore, when automatic emergency brake system provided by the invention works
Rear car alarm set, including brake switch 3, Brake lamp/AEB work warning lamp 4 and braking lamp controller 7, wherein Brake lamp control
Device 7 processed includes flash driving circuit 2, microcontroller 8 and CAN interface, and flash driving circuit 2 is P-channel metal-oxide-semiconductor.
The input terminal of microcontroller 8 connects the CAN interface of AEB system 1, microcontroller 8 by CAN interface through CAN bus 6
Output end connection flash driving circuit 2 grid, flash driving circuit 2 drain electrode connection vehicle power supply 5 anode, power supply
5 cathode ground connection.The sources connected in parallel connection brake switch 3 and Brake lamp of flash driving circuit 2/AEB work warning lamp 4 one
End, the other end of brake switch 3 connect power supply 5, Brake lamp/AEB work warning lamp 4 other end ground connection, and microcontroller 8 is used for
Pass through the level-one pre-warning signal and front truck speed signal that CAN bus 6 exports according to by AEB system 1, is slowed down using front truck and judge to calculate
Method controls Brake lamp/AEB work warning lamp 4 through brake switch 3 by flash driving circuit 2 and opens or closes.
In a preferred embodiment, parameter setting module, data reception module and front truck are provided in microcontroller 8
Deceleration judgment module.Parameter setting module is for presetting deceleration regime threshold value, including speed threshold value and deceleration duration threshold value.
Data reception module is used to receive AEB system 1 and passes through level-one alarm signal and front truck speed signal that CAN bus 6 is sent.Front truck
Deceleration judgment module is used to be opened according to level-one alarm signal, front truck speed signal and preset deceleration regime threshold value by braking
3 control Brake lamps/AEB work warning lamp 4 is closed to light or flash.
Rear car alarm set when 2 automatic emergency brake system work based on the above embodiment, as shown in figure 4, this hair
A kind of bright rear car based reminding method also provided when automatic emergency brake system works, comprising the following steps:
1) deceleration regime of the 1 real-time detection front truck of AEB system of this vehicle, when AEB system 1 detects this vehicle and front truck
When having risk of collision, level-one pre-warning signal is exported to microcontroller 8, to remind the driver of the vehicle by CAN bus 6.
2) AEB system 1 also exports front truck speed signal to microcontroller 8 by CAN bus 6.
3) microcontroller 8 presets deceleration regime threshold value, including speed threshold value and deceleration duration threshold value.
4) microcontroller 8 is according to level-one alarm signal, front truck speed signal and preset deceleration regime threshold value, using front truck
Deceleration judges algorithm, lights or flashes by the control of brake switch 3 Brake lamp/AEB work warning lamp 4, to remind driving for rear car
The person's of sailing slow down, specifically:
4.1) microcontroller 8 is examined in real time according to level-one alarm signal, front truck speed signal and preset deceleration regime threshold value
The deceleration regime (speed and deceleration duration) of front truck is surveyed, two threshold values of above-mentioned speed threshold value and deceleration duration threshold value are by front vehicles
Deceleration regime be divided into it is strong slow down and two grades of normally slowing down, form three in conjunction with the level-one alarm signal that AEB system 1 exports
Grade alarm.When AEB system 1 does not enter into, control is i.e. no to export level-one alarm signal, and the speed signal of front truck reaches default
Speed threshold value without reaching preset deceleration duration threshold value when, microcontroller 8 by flash driving circuit 2 through brake switch
3 control Brake lamps/AEB work 4 fast blinks of warning lamp (such as: flicker frequency is 1 second, wherein bright 500 milliseconds, go out 500
Millisecond), remind rear car to notice that the strong deceleration in front may;
4.2) when AEB system 1 does not enter into, control is i.e. no to export level-one alarm signal, and the speed signal of front truck is simultaneously
When reaching preset speed threshold value and deceleration duration threshold value, microcontroller 8 is controlled by flash driving circuit 2 through brake switch 3
Brake lamp/AEB work warning lamp 4 flash at a slow speed (such as: flicker frequency is 2 seconds, wherein bright 1 second, go out 1 second), prompting rear car
Notice that the normal deceleration in front may;
4.3) it is passed through when AEB system 1 enters control i.e. output level-one alarm signal, microcontroller 8 by flash driving circuit 2
Brake switch 3 controls Brake lamp/AEB work warning lamp 4 and lights, and reminding has the appearance of emergency braking situation in front of rear car, should be immediately
Carry out deceleration-operation, wherein speed threshold value and deceleration duration threshold value can be set according to the actual situation, and different vehicles is corresponding
Threshold value it is different.
The various embodiments described above are merely to illustrate the present invention, wherein the structure of each component, connection type and manufacture craft etc. are all
It can be varied, all equivalents and improvement carried out based on the technical solution of the present invention should not exclude
Except protection scope of the present invention.
Claims (8)
- Rear car alarm set when 1. a kind of automatic emergency brake system works, which is characterized in that including flash driving circuit, system Dynamic switch and Brake lamp/AES work warning lamp, wherein the flash driving circuit is P-channel metal-oxide-semiconductor;The output end of the grid connection automatic emergency brake system of the flash driving circuit;The anode of the drain electrode connection power supply of the flash driving circuit, the cathode ground connection of the power supply;The sources connected in parallel of the flash driving circuit connects the brake switch and Brake lamp/AES work warning lamp one end, institute The other end for stating brake switch connects the power supply, the Brake lamp/AES work warning lamp other end ground connection, the flash Driving circuit is used for the level-one pre-warning signal exported according to the automatic emergency brake system, controls institute by the brake switch Brake lamp/AES work warning lamp is stated to open or close.
- Rear car alarm set when 2. a kind of automatic emergency brake system works, which is characterized in that including braking lamp controller, system Dynamic switch and Brake lamp/AES work warning lamp, wherein and the braking lamp controller includes microcontroller and flash driving circuit, The flash driving circuit is P-channel metal-oxide-semiconductor;The output end of the input terminal connection automatic emergency brake system of the microcontroller, the output end connection of the microcontroller The grid of the flash driving circuit;The anode of the drain electrode connection power supply of the flash driving circuit, the cathode ground connection of the power supply;The sources connected in parallel of the flash driving circuit connects the brake switch and Brake lamp/AES work warning lamp one end, institute The other end for stating brake switch connects the power supply, the Brake lamp/AES work warning lamp other end ground connection, the micro-control Device processed is used to be subtracted according to the level-one pre-warning signal and front truck speed signal that are exported by the automatic emergency brake system using front truck Speed judges algorithm, controls the Brake lamp/AES work warning lamp through the brake switch by the flash driving circuit and opens It opens or closes.
- 3. rear car alarm set when a kind of automatic emergency brake system work as claimed in claim 2, which is characterized in that institute The input terminal for stating microcontroller connects the output end of the automatic emergency brake system by CAN bus.
- 4. rear car alarm set when a kind of automatic emergency brake system work as claimed in claim 2, which is characterized in that institute It states and is provided with parameter setting module, data reception module and front truck deceleration judgment module in microcontroller;The parameter setting module is for presetting deceleration regime threshold value;The data reception module is used to receive level-one alarm signal and front truck speed that the automatic emergency brake system is sent Signal;The front truck deceleration judgment module is used for according to level-one alarm signal, front truck speed signal and preset deceleration regime threshold Value is lighted or is flashed by the brake switch control Brake lamp/AEB work warning lamp.
- 5. rear car alarm set when a kind of automatic emergency brake system work as claimed in claim 4, which is characterized in that institute Stating deceleration regime threshold value includes speed threshold value and deceleration duration threshold value.
- Rear car based reminding method when 6. a kind of automatic emergency brake system works, which is characterized in that including the following contents:1) deceleration regime of the automatic emergency brake system real-time detection front truck of this vehicle, when automatic emergency brake system detects When this vehicle and front truck have risk of collision, output level-one pre-warning signal to microcontroller;2) automatic emergency brake system also passes through output front truck speed signal to microcontroller;3) microcontroller is slowed down according to level-one alarm signal, front truck speed signal and preset deceleration regime threshold value using front truck Judge algorithm, lights or flash by brake switch control Brake lamp/AES work warning lamp.
- 7. rear car based reminding method when a kind of automatic emergency brake system work as claimed in claim 6, which is characterized in that institute Stating deceleration regime threshold value includes speed threshold value and deceleration duration threshold value.
- 8. rear car based reminding method when a kind of automatic emergency brake system work as claimed in claim 7, which is characterized in that institute State the detailed process of step 4) are as follows:4.1) microcontroller is according to level-one alarm signal, front truck speed signal and preset deceleration regime threshold value, before real-time detection The deceleration regime of vehicle, when automatic emergency brake system does not export level-one alarm signal, and the speed signal of front truck reaches default Speed threshold value without reaching preset deceleration duration threshold value when, microcontroller by flash driving circuit through brake switch control Brake lamp processed/AES work warning lamp fast blink;4.2) when automatic emergency brake system does not export level-one alarm signal, and the speed signal of front truck reaches preset simultaneously When speed threshold value and deceleration duration threshold value, microcontroller controls Brake lamp/AES through brake switch by flash driving circuit and works Warning lamp flashes at a slow speed;4.3) when automatic emergency brake system exports level-one alarm signal, microcontroller is by flash driving circuit through brake switch Control Brake lamp/AEB work warning lamp is lighted.
Priority Applications (1)
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CN201910720282.5A CN110435533A (en) | 2019-08-06 | 2019-08-06 | Rear car alarm set and method when a kind of automatic emergency brake system works |
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CN201910720282.5A CN110435533A (en) | 2019-08-06 | 2019-08-06 | Rear car alarm set and method when a kind of automatic emergency brake system works |
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN111653126A (en) * | 2020-05-29 | 2020-09-11 | 长安大学 | Rear-end collision prevention method during vehicle passing yellow light |
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CN101648542A (en) * | 2008-08-14 | 2010-02-17 | 缪瑛 | Alarm and automatic brake system for brake state of automobile |
CN202966280U (en) * | 2012-12-21 | 2013-06-05 | 长安大学 | Automotive emergency brake assistant device |
CN202966105U (en) * | 2012-11-30 | 2013-06-05 | 肇庆中晶实业有限公司 | Control circuit of brake light |
CN108082036A (en) * | 2016-11-23 | 2018-05-29 | 福特全球技术公司 | Vehicle notification device |
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Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
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CN200962201Y (en) * | 2006-01-04 | 2007-10-17 | 倪明旺 | Car automatic forewarning braking device |
CN101648542A (en) * | 2008-08-14 | 2010-02-17 | 缪瑛 | Alarm and automatic brake system for brake state of automobile |
CN202966105U (en) * | 2012-11-30 | 2013-06-05 | 肇庆中晶实业有限公司 | Control circuit of brake light |
CN202966280U (en) * | 2012-12-21 | 2013-06-05 | 长安大学 | Automotive emergency brake assistant device |
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Application publication date: 20191112 |
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