CN107458303A - Automobile emergency braking danger alarm system and control method thereof - Google Patents
Automobile emergency braking danger alarm system and control method thereof Download PDFInfo
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- CN107458303A CN107458303A CN201710486475.XA CN201710486475A CN107458303A CN 107458303 A CN107458303 A CN 107458303A CN 201710486475 A CN201710486475 A CN 201710486475A CN 107458303 A CN107458303 A CN 107458303A
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- 238000000034 method Methods 0.000 title claims abstract description 14
- 230000001133 acceleration Effects 0.000 claims abstract description 28
- 230000000052 comparative effect Effects 0.000 claims description 4
- 230000005540 biological transmission Effects 0.000 claims description 3
- 238000001514 detection method Methods 0.000 description 3
- 230000001934 delay Effects 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000002618 waking effect Effects 0.000 description 1
Classifications
-
- 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
- B60Q1/441—Electric switches operable by the driver's pedals
-
- 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
- B60Q1/444—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 with indication of the braking strength or speed changes, e.g. by changing shape or intensity of the indication
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Lighting Device Outwards From Vehicle And Optical Signal (AREA)
Abstract
An automobile emergency braking danger alarm system and a control method thereof are disclosed, wherein an output end of a speed sensor, an output end of an acceleration sensor and an output end of a brake pedal sensor in the alarm system are respectively connected with an input port of a controller, an input end of a brake lamp circuit is connected with a brake control output port of the controller, one end of a relay (1) is connected with an output port of the controller, and the other end of the relay (1) is connected with a danger alarm circuit. The control method comprises the steps of judging whether the vehicle is braked emergently or not by detecting the force of the driver for stepping on the brake pedal, the angular speed change rate of the brake pedal, the acceleration of the vehicle and the speed of the vehicle, and reminding the vehicle behind by lightening a danger warning lamp; meanwhile, a delay control mode that a danger alarm is still reminded for a certain time after the emergency brake is released is ensured through a delay control circuit so as to remind a rear vehicle to pay attention to the distance between vehicles, and the occurrence of rear-end accidents can be effectively avoided.
Description
Technical field
The present invention relates to a kind of risk alarm system, more specifically to a kind of automobile emergency brake risk alarm system
And its control method, belong to technical field of automobile control.
Background technology
Currently, with the rise year by year of automotive average speed of operation, the safety problem of running car is also increasingly by people
Concern.Automobile brake is an important means for ensureing ride safety of automobile, and in vehicle travel process, driver's subtracts
Speed is intended to that surrounding vehicles and pedestrian can be passed to by stop, tail and number plate light, judges in advance, avoids the generation of rear-end collision.
Vehicle braking can be divided into general braking and brake hard, and the severity of braking typically braked is smaller, and vehicle deceleration is slower, front vehicle
When seeing the brake signal of front vehicles, can typically tackle in time；And brake hard, because severity of braking is larger, vehicle subtracts
Fast very fast, front vehicle is after the brake signal of front vehicles is seen, it is necessary to has time enough and enough severities of braking,
It can ensure that Vehicle Speed lowers, avoid the generation of rear-end collision.Stop, tail and number plate light when this requires brake hard with
The stop, tail and number plate light typically braked is different, front vehicle could be reminded to make action in advance in time, avoid knocking into the back；But at present
Brake system of car in, general braking and brake hard are not made a distinction, using identical stop, tail and number plate light, therefore
In the presence of greatly potential safety hazard, especially during high vehicle speeds, front vehicles once carry out brake hard, rear
The possibility of vehicle rear-end collision is very big.
It is entitled《A kind of Automobile emergency brake alarm system and its control method》, application publication number CN102991412A
Chinese invention patent application disclose a kind of automobile emergency warning system and its control method, system therein includes display and filled
Put, acceleration detecting, brake pedal position detection means and controller, controller receive acceleration detecting and brake
The signal of pedal position detection means, and control according to signal the display of display device；Control method therein is to state control
Device receives the signal of acceleration detecting and brake pedal position detection means, when brake pedal step on and acceleration exceed it is pre-
When determining acceleration, controller control display device shows that this is in emergency brake state.But the application for a patent for invention just like
Lower defect：1st, the application for a patent for invention is that acceleration, brake pedal position and speed information are judged by controller,
To be confirmed whether it is brake hard, only when three meets sets requirement simultaneously, it is auxiliary that controller just controls display device to light
Brake lamp is helped, increase brake lamp shows area, reminds front vehicle to pay attention to；So incrementally increased when with brake-pedal travel,
When car speed is reduced to a certain extent, acceleration will be less and less, and when acceleration, which is less than, to impose a condition, controller will move out
Emergency brake modes, display device will no longer be shown as brake hard, and the prompting to front vehicle is inadequate, still occurs the thing that knocks into the back
Therefore possibility.2nd, do not have in the application for a patent for invention brake hard remind delay function, if front truck light auxiliary brake lamp,
After speed is reduced to certain value, loosen the brake, give it the gun, controller will move out emergency brake modes, and now due to
Front truck speed is not got up also, and there is also the possibility of car rear-end for rear car.3rd, the application for a patent for invention is controlled by controller
Display device lights auxiliary brake lamp, and increase brake lamp shows the mode of area to remind front vehicle, and this just illustrates to need
Increase auxiliary brake lamp on vehicle, cost will be caused to raise, and auxiliary brake lamp also increases the arrangement difficulty of vehicle.
The content of the invention
The present invention does not have brake hard to remind delay function, need existing for a kind of existing automobile emergency brake mode
Will on vehicle increase auxiliary brake lamp the problems such as, there is provided a kind of automobile emergency brake risk alarm system and its control method.
To achieve the above object, technical solution of the invention is：A kind of automobile emergency brake risk alarm system, bag
Vehicle speed sensor, acceleration transducer, brake pedal sensor, brake light circuit, hydropac circuit are included, also includes control
Device and relay, described vehicle speed sensor output end, acceleration transducer output end and brake pedal sensor output end point
It is not connected with the input port of controller, the input of the brake light circuit and the control for brake output port phase of controller
Connection, described relay one end are connected with the output port of controller, and the relay other end is connected with hydropac circuit.
Described controller include signal processing circuit, comparator circuit, ALU, delay control circuit and in
Entreat control unit, input port of the signal processing circuit input as controller, signal processing circuit output end difference
It is connected with the input port of comparator circuit input and central control unit, described comparator circuit output end and logic
Arithmetic element input is connected, and the ALU output end is connected with the input port of central control unit, institute
The delay control circuit stated includes the first triode and the second triode, the colelctor electrode and the second triode of first triode
A port of the colelctor electrode respectively with Control end be connected, another port at the Control end and power supply
Ground is connected, and the emitter stage of the emitter stage of the first triode and the second triode is connected with power supply respectively, the first triode
Base stage be connected with ALU output end, the base stage of second triode and the output port of central control unit
It is connected, a termination 24V power supplys of relay controlled terminal, the other end and the danger in hydropac circuit of relay controlled terminal
The pin 6 of alarm contact is connected, and the left steering lamp in hydropac circuit switchs with the hydropac in hydropac circuit
Pin 5 be connected, the right turn lamp in hydropac circuit and in hydropac circuit hydropac switch the phase of pin 2
Connection.
A kind of control method of automobile emergency brake risk alarm system, including following step：Step 1, work as driver
During brake pedal, brake light circuit receives brake signal and lights Brake lamp；Step 2, vehicle speed sensor, acceleration
The signal collected is passed to signal processing unit by sensor and brake pedal sensor respectively, signal processing unit according to
Corresponding algorithm is handled the signal of vehicle speed sensor, acceleration transducer and brake pedal sensor transmission and will processing
As a result export to comparator circuit and central control unit；Step 3, comparator circuit by speed, acceleration, brake pedal force,
Angle of brake pedal rate of change is exported to ALU compared with setting value and by comparative result；Step 4, logic
Arithmetic element is compared for the result of comparator circuit input, to judge whether the operation of driver is brake hard, such as
Fruit is non-emergent braking, then ALU output low level；If brake hard, then ALU output is high electric
Put down to delay control circuit and central control unit, now the first triode in delay control circuit is in the conduction state, electricity
Stream passes through the colelctor electrode of the first triode and closed to the control terminal of relay, the energization of Control end, the controlled terminal of relay,
The port 6 of hydropac switch is turned on, and now left steering lamp and right turn lamp are lit, i.e., hydropac lamp is opened；Meanwhile
Controller central control unit controls the second triode ON, when emergency brake signal moves back after emergency brake signal is received
After going out, central control unit continues to output brake signal it is first determined whether comparator circuit be present, if so, then continuing to output
High level controls the second triode to be constantly in conducting state to the second triode, it is ensured that hydropac lamp is always on to be in point
Bright state, after brake relieving signal, central controller then exports low level to the two or three after delay time set in advance
Pole pipe, the second triode of control disconnect, and disconnect dangerous relay, extinguish hydropac lamp, i.e. hydropac releases.
Compared with prior art, the beneficial effects of the invention are as follows：
1st, determined whether in the present invention by speed, vehicle acceleration, brake pedal force and angle of brake pedal rate of change
For brake hard, and front vehicle is reminded by way of lighting hydropac lamp.
2nd, ensure that still hydropac reminds a timing after brake hard releasing by delay control circuit in the present invention
Between delays time to control mode, to remind front vehicle to pay attention to spacing, can effectively avoid the generation of rear-end collision.
3rd, front vehicle is reminded to pay attention to keeping the control mode of safe distance between vehicles by opening hydropac lamp in the present invention.
Brief description of the drawings
Fig. 1 is structured flowchart of the present invention.
Fig. 2 is delay control circuit circuit theory diagrams in the present invention.
In figure：Relay 1, the first triode 2, the second triode 3, hydropac switch 4, left steering lamp 5, right turn lamp
6。
Embodiment
Below in conjunction with brief description of the drawings, the present invention is described in further detail with embodiment.
Referring to Fig. 1, a kind of automobile emergency brake risk alarm system, including vehicle speed sensor, acceleration transducer, braking
Pedal sensor, controller, relay 1, brake light circuit and hydropac circuit.Described vehicle speed sensor output end plus
Velocity sensor output end and brake pedal sensor output end are connected with the input port of controller respectively, the Brake lamp
The input of circuit is connected with the control for brake output port of controller；Described one end of relay 1 and the output end of controller
Mouth is connected, and the other end of relay 1 is connected with hydropac circuit.
Referring to Fig. 1 to Fig. 2, described controller includes signal processing circuit, comparator circuit, ALU, prolonged
When control circuit and central control unit.Described delay control circuit includes the first triode 2 and the second triode 3, described
A port of the colelctor electrode of the colelctor electrode of first triode 2 and the second triode 3 respectively with the control terminal of relay 1 is connected,
Another port of the control terminal of relay 1 is connected with power supply.The emitter stage of first triode 2 and the second triode 3
Emitter stage be connected respectively with power supply, the base stage of the first triode 2 is connected with ALU output end, described
The base stage of two triodes 3 is connected with the output port of central control unit.One termination 24V power supplys of the controlled terminal of relay 1, after
The other end of the controlled terminal of electrical equipment 1 is connected with the pin 6 of the hydropac switch 4 in hydropac circuit, hydropac circuit
In left steering lamp 5 with hydropac circuit hydropac switch 4 pin 5 be connected, the right side in hydropac circuit
Steering indicating light 6 is connected with the pin 2 of the hydropac switch 4 in hydropac circuit.
Referring to Fig. 1 to Fig. 2, input port of the signal processing circuit input as controller, signal processing circuit
Input port of the output end respectively with comparator circuit input and central control unit is connected；Signal processing circuit is mainly
The signal gathered to vehicle speed sensor, acceleration transducer, brake pedal sensor is handled, and is exported and given comparator electricity
Road.Described comparator circuit output end is connected with ALU input, the ALU output end with
The input port of central control unit is connected；The comparator circuit by the speed after signal processing circuit is handled, accelerate
Degree, the power born of angle of brake pedal rate of change and brake pedal compared with setting value, and by comparative result export to
ALU.The result that ALU inputs to comparator circuit is compared, to determine whether brake hard,
If brake hard, ALU exports high level to delay control circuit, now first in delay control circuit
Triode 2 turns on, and electric current is by the colelctor electrode of the first triode 2 to the control terminal of relay 1, and relay 1 turns on, coil closes
Ring, the port 6 of hydropac lamp switch 4 are turned on, and left steering lamp 5 and right turn lamp 6 are lighted, i.e., hydropac lamp is opened；Together
When, central control unit is after emergency brake signal is received, and the second triode 3 of control turns on, when emergency brake signal exits
Afterwards, it is first determined whether there is brake signal in central control unit, if so, high level is then continued to output to the second triode 3,
Ensure that hydropac lamp is in illuminating state, if there is no brake signal, then after delay time set in advance, output is low
Level gives the second triode 3, disconnects relay 1, extinguishes hydropac lamp.
Referring to Fig. 1 to Fig. 2, a kind of control method of automobile emergency brake risk alarm system, including following step：
Step 1, when driver's brake pedal, brake light circuit receives brake signal and lights Brake lamp.
Step 2, vehicle speed sensor, acceleration transducer and brake pedal sensor pass through the input of controller respectively
Mouthful the signal collected is passed into signal processing unit, signal processing unit according to corresponding algorithm to vehicle speed sensor,
Acceleration transducer and the signal of brake pedal sensor transmission handled and result is exported to comparator circuit and
Central control unit.Corresponding algorithm refers to signal processing unit respectively for vehicle speed sensor, acceleration transducer herein
Handled with the signal that brake pedal sensor is gathered, it is converted to the data signal that can be used, then enter one again
Step, which is converted to, can use measurand.
Step 3, comparator circuit is by speed, acceleration, brake pedal force, angle of brake pedal rate of change and setting value
It is compared and exports comparative result to ALU.Setting value herein is commonly referred to as the value demarcated in advance；But
Different brake pedals, setting value are different.
Step 4, ALU is compared for the result of comparator circuit input, to judge the behaviour of driver
Whether it is brake hard, if non-emergent braking, then ALU output low level.
If brake hard, then ALU exports high level to delay control circuit and central control unit,
The first triode 2 now in delay control circuit is in the conduction state, and electric current passes through the colelctor electrode of the first triode 2 to relay
The control terminal of device 1, the control terminal of relay 1 is powered, the controlled terminal of relay 1 closure；The port 6 of hydropac switch 4 turns on, this
When left steering lamp 5 and right turn lamp 6 be lit, i.e., hydropac lamp open, remind front vehicle danger.In meanwhile
Control unit is entreated after emergency brake signal is received, the second triode 3 of control turns on；After emergency brake signal exits, in
Centre control unit continues to output brake signal it is first determined whether comparator circuit be present, if so, then continuing to output high level
The second triode 3 is controlled to be constantly in conducting state to the second triode 3, it is ensured that always on be in of hydropac lamp lights shape
State, after now i.e. hydropac lamp is opened, as long as comparator circuit continues to output brake signal to central control unit, then in
Centre control unit will control the second triode 3 to be constantly in conducting state；After brake relieving signal, central controller is then pre-
Low level is exported after the delay time first set to disconnect to the second triode 3, the second triode 3 of control, disconnects dangerous relay
1, extinguish hydropac lamp, i.e. hydropac releases.
Referring to Fig. 1 to Fig. 2, by detecting, driver steps on the dynamics of brake pedal to the application, brake pedal angular speed changes
Rate, vehicle acceleration and speed judge whether vehicle is brake hard, and is carried by way of lighting hydropac lamp
Front vehicle of waking up；Meanwhile ensure that still hydropac reminds a timing after brake hard releasing by delay control circuit
Between delays time to control mode, i.e., still control hydropac lamp to light in certain time after driver loosens the brake, to carry
Awake front vehicle pays attention to spacing, can effectively avoid the generation of rear-end collision.
Above content is to combine specific preferred embodiment further description made for the present invention, it is impossible to is assert
The specific implementation of the present invention is confined to these explanations.For general technical staff of the technical field of the invention,
On the premise of not departing from present inventive concept, some simple deduction or replace can also be made, said structure should be all considered as belonging to
Protection scope of the present invention.
Claims (3)
1. a kind of automobile emergency brake risk alarm system, including vehicle speed sensor, acceleration transducer, brake pedal sensing
Device, brake light circuit, hydropac circuit, it is characterised in that：Also include controller and relay（1）, described speed passes
Sensor output end, acceleration transducer output end and brake pedal sensor output end are connected with the input port of controller respectively
Connect, the input of the brake light circuit is connected with the control for brake output port of controller, the relay（1）One end with
The output port of controller is connected, relay（1）The other end is connected with hydropac circuit.
A kind of 2. automobile emergency brake risk alarm system according to claim 1, it is characterised in that：Described controller
Including signal processing circuit, comparator circuit, ALU, delay control circuit and central control unit, the signal
Input port of the process circuit input as controller, signal processing circuit output end respectively with comparator circuit input and
The input port of central control unit is connected, and described comparator circuit output end is connected with ALU input
Connect, the ALU output end is connected with the input port of central control unit, described delay control circuit bag
Include the first triode（2）With the second triode（3）, first triode（2）Colelctor electrode and the second triode（3）Current collection
Pole respectively with relay（1）The a port of control terminal is connected, the relay（1）Another port of control terminal and power supply
Ground is connected, the first triode（2）Emitter stage and the second triode（3）Emitter stage be connected respectively with power supply, first
Triode（2）Base stage be connected with ALU output end, second triode（3）Base stage and center control it is single
The output port of member is connected, relay（1）One termination 24V power supplys of controlled terminal, relay（1）The other end and danger of controlled terminal
Hydropac switch in dangerous circuit for alarming（4）Pin 6 be connected, the left steering lamp in hydropac circuit（5）With danger
Hydropac switch in circuit for alarming（4）Pin 5 be connected, the right turn lamp in hydropac circuit（6）Warned with danger
Hydropac switch in telegraph circuit（4）Pin 2 be connected.
3. a kind of control method of automobile emergency brake risk alarm system, it is characterised in that including following step：
Step 1, when driver's brake pedal, brake light circuit receives brake signal and lights Brake lamp；
Step 2, vehicle speed sensor, acceleration transducer and brake pedal sensor respectively pass to the signal collected
Signal processing unit, signal processing unit pass according to corresponding algorithm to vehicle speed sensor, acceleration transducer and brake pedal
The signal of sensor transmission is handled and is exported result to comparator circuit and central control unit；
Step 3, comparator circuit carry out speed, acceleration, brake pedal force, angle of brake pedal rate of change and setting value
Relatively and by comparative result export to ALU；
Step 4, ALU are compared for the result of comparator circuit input, to judge that the operation of driver is
No is brake hard, if non-emergent braking, then ALU output low level；
If brake hard, then ALU exports high level to delay control circuit and central control unit, now
The first triode in delay control circuit（2）In the conduction state, electric current passes through the first triode（2）Colelctor electrode to relay
Device（1）Control terminal, relay（1）Control terminal is powered, relay（1）Controlled terminal closure, hydropac switch（4）Port
6 turn on, now left steering lamp（5）With right turn lamp（6）It is lit, i.e., hydropac lamp is opened；Meanwhile controller center control
Unit processed controls the second triode after emergency brake signal is received（3）Conducting, after emergency brake signal exits, center
Control unit continues to output brake signal it is first determined whether comparator circuit be present, if so, then continue to output high level to
Second triode（3）Control the second triode（3）It is constantly in conducting state, it is ensured that always on be in of hydropac lamp is lighted
State, after brake relieving signal, central controller then exports low level to the two or three pole after delay time set in advance
Pipe（3）, control the second triode（3）Disconnect, disconnect dangerous relay（1）, extinguish hydropac lamp, i.e. hydropac releases.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710486475.XA CN107458303B (en) | 2017-06-23 | 2017-06-23 | Emergency braking danger alarm system for automobile and control method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710486475.XA CN107458303B (en) | 2017-06-23 | 2017-06-23 | Emergency braking danger alarm system for automobile and control method thereof |
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| Publication Number | Publication Date |
|---|---|
| CN107458303A true CN107458303A (en) | 2017-12-12 |
| CN107458303B CN107458303B (en) | 2023-10-24 |
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ID=60546410
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710486475.XA Active CN107458303B (en) | 2017-06-23 | 2017-06-23 | Emergency braking danger alarm system for automobile and control method thereof |
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| Country | Link |
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| CN (1) | CN107458303B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108501733A (en) * | 2018-04-25 | 2018-09-07 | 北京新能源汽车股份有限公司 | Control method and device for emergency braking auxiliary early warning function and electric automobile |
| CN111391675A (en) * | 2020-03-31 | 2020-07-10 | 东风汽车集团有限公司 | A variable braking torque energy recovery control method for electric vehicles |
| CN111469757A (en) * | 2019-01-23 | 2020-07-31 | 北京新能源汽车股份有限公司 | Brake lamp control method and device and electric automobile |
| CN115402456A (en) * | 2021-05-27 | 2022-11-29 | 北京骑胜科技有限公司 | Braking system, braking method and vehicle |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111391675A (en) * | 2020-03-31 | 2020-07-10 | 东风汽车集团有限公司 | A variable braking torque energy recovery control method for electric vehicles |
| CN111391675B (en) * | 2020-03-31 | 2022-03-15 | 东风汽车集团有限公司 | Variable braking torque energy recovery control method for electric automobile |
| CN115402456A (en) * | 2021-05-27 | 2022-11-29 | 北京骑胜科技有限公司 | Braking system, braking method and vehicle |
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