CN106364398A - Brake lamp controller capable of indicating braking degree of motor vehicle - Google Patents
Brake lamp controller capable of indicating braking degree of motor vehicle Download PDFInfo
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- CN106364398A CN106364398A CN201510428955.1A CN201510428955A CN106364398A CN 106364398 A CN106364398 A CN 106364398A CN 201510428955 A CN201510428955 A CN 201510428955A CN 106364398 A CN106364398 A CN 106364398A
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- brake
- brake lamp
- lamp controller
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Abstract
The invention discloses a brake lamp controller capable of indicating a braking degree of a motor vehicle. A traditional brake lamp is on when a motor vehicle is braked, and a signal of motor vehicle braking is transmitted to a driver in a vehicle behind. The barking degree of the motor vehicle needs to be judged by the driver in the vehicle behind. According to the invention, a single-chip microcomputer samples signals of an acceleration sensor; and a flicker frequency of the brake lamp is controlled according to a negative acceleration value during the braking of the motor vehicle. In this way, the driver in the vehicle behind can know the braking degree of the front vehicle from a far location. The controller disclosed by the invention is advanced in that existing electronic technologies are applied to transmit more information.
Description
Technical field: the invention belongs to motor vehicle fittings field, be a kind of brake lamp controller of instruction brake of motor-driven vehicle emergency, the brake lamp being provided with the present invention can be rear car driver transmission front truck brake emergency information.
Technical background: current brake lamp, by brake switch control, is lighted in brake of motor-driven vehicle, as to whether bring to a halt need rear car driver to judge.With the progress of singlechip technology, brake lamp transmission more information is allowed to be possibly realized.
Content of the invention: coordinated with acceleration transducer using single-chip microcomputer, according to negative acceleration value during brake of motor-driven vehicle, control brake light flicker.Reducing speed of motor vehicle is faster, and brake light flicker is faster.It is easier to distinguish brake lamp and side-marker lamp after brake lamp is changed to flashing mode.
Brief description:
Fig. 1 is brake lamp controller full figure.
The part being labeled as 1 is former brake lamp power line, steps on and has electricity during brake, no electric during releasing of brake.
The part being labeled as 2 is this controller power source adjustment circuit, 12v or 24v is adjusted to the voltage of single-chip microcomputer requirement.
Be labeled as 3 part be this controller main control singlechip.
The part being labeled as 4 is to control the vmos switching tube of brake light flicker.
The part being labeled as 5 is acceleration transducer, accekeration during perception brake emergency.
The part being labeled as 6 is the i2c bus communicating between single-chip microcomputer and acceleration transducer.
The part being labeled as 7 is to connect common brake lamp interface.
Be labeled as 8 part be manufacture containing this controller brake lamp when led array.
Be labeled as 9 part be this brake lamp controller write a yard interface.
The part being labeled as 10 is functional select switch.Open circuit or closure select different working methods.
Embodiment:
By specification accompanying drawing makes brake lamp controller, if making complete brake lamp, can increase led array.Work process is: steps on brake pedal, input power (1) obtains electric.Single-chip microcomputer (3) is started working with acceleration transducer (5), and single-chip microcomputer (3) passes through the brake accekeration of i2c bus (6) sampled acceleration sensor (5), is scaled the brake lamp on/off time.According to the light on and off time, brake lamp on/off is controlled by vmos switching tube (4), realize external brake lamp (7) or led array (8) flicker.Until releasing of brake pedal, system dead electricity, complete a brake scitillation process.
Functional select switch (10) has closure and open circuit two states, a kind of state brake light flicker frequency following brake brief acceleration change.Another kind of state, preserves the maximum acceleration value in a brake process, flashes brake lamp with maximum acceleration value, and until brake terminates, brake lamp goes out.
This controller is by following algorithm controls light on and off duration:
Different according to mounting means, if the accekeration negative growth that when brake increases, sampling obtains, accekeration is multiplied by (- 1).
When brake increases, positive growth accekeration is expressed as: a
The maximum acceleration value that tire can produce with pavement friction is: max_a
Bright light duration: max_on when defining a=0 during programming
Bright light duration: min_on when defining a=max_a during programming
Turn off the light when defining a=0 during programming duration: max_off
Turn off the light when defining a=max_a during programming duration: min_off
Bright light duration during brake: time_on
Turn off the light during brake duration: time_off
Time_on=(min_on-max_on) * a/max_a+max_on
Time_off=(min_off-max_off) * a/max_a+max_off
Time_on+time_off is the brake light flicker cycle during brake.
Time_on/ (time_on+time_off) is brake light flicker dutycycle during brake.
By algorithm above, the fastest flicker frequency can be specified when dispatching from the factory, touch flicker frequency during brake pedal, light on and off duration ratio during flicker.The final corresponding relation realized between brake emergency and brake light flicker frequency.
Claims (7)
1. the invention discloses a kind of brake lamp controller that may indicate that brake of motor-driven vehicle emergency is it is characterised in that utilize
Single-chip microcomputer realizes the corresponding relation of brake light flicker frequency and brake emergency with acceleration transducer cooperation.
2. a kind of brake lamp controller according to claim 1 is it is characterised in that employ at avr single-chip microcomputer
Reason motor vehicles acceleration information.
3. a kind of brake lamp controller according to claim 1 adds it is characterised in that employing adxl345
Velocity sensor chip perceives motor vehicles acceleration information.
4. a kind of brake lamp controller according to claim 1 is it is characterised in that avr single-chip microcomputer and acceleration
Pass through i2c bus connection communication between sensor chip adxl345.
5. a kind of brake lamp controller according to claim 1, it is characterised in that being provided with switch 10, is realized
The selection of two kinds of working methods, a kind of mode is to dodge by the maximum acceleration value occurring in a brake process
Bright, the second way follows the acceleration change in brake process for flicker frequency.
6. a kind of brake lamp controller according to claim 1 is it is characterised in that press
When time_on=(min_on-max_on) * a/max_a+max_on controls brake light flicker during bright light
Long.
7. a kind of brake lamp controller according to claim 1 is it is characterised in that press
When time_off=(min_off-max_off) * a/max_a+max_off turns off the light when controlling brake light flicker
Long.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510428955.1A CN106364398A (en) | 2015-07-21 | 2015-07-21 | Brake lamp controller capable of indicating braking degree of motor vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510428955.1A CN106364398A (en) | 2015-07-21 | 2015-07-21 | Brake lamp controller capable of indicating braking degree of motor vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106364398A true CN106364398A (en) | 2017-02-01 |
Family
ID=57880657
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510428955.1A Pending CN106364398A (en) | 2015-07-21 | 2015-07-21 | Brake lamp controller capable of indicating braking degree of motor vehicle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106364398A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101665095A (en) * | 2008-09-01 | 2010-03-10 | 大亿交通工业制造股份有限公司 | Emergency brake warning lamp |
| CN102126463A (en) * | 2011-01-24 | 2011-07-20 | 北京吉纳百川科技发展有限公司 | Brake light flicker indication method |
| CN102343855A (en) * | 2011-07-22 | 2012-02-08 | 公安部交通管理科学研究所 | Lamp signal control device of trailer |
| CN102381244A (en) * | 2011-10-18 | 2012-03-21 | 奇瑞汽车股份有限公司 | Control system and control method for automobile brake lamp |
| CN103747571A (en) * | 2013-12-25 | 2014-04-23 | 浙江吉利控股集团有限公司 | Vehicle speed based brake lamp automatic control method and control apparatus |
-
2015
- 2015-07-21 CN CN201510428955.1A patent/CN106364398A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101665095A (en) * | 2008-09-01 | 2010-03-10 | 大亿交通工业制造股份有限公司 | Emergency brake warning lamp |
| CN102126463A (en) * | 2011-01-24 | 2011-07-20 | 北京吉纳百川科技发展有限公司 | Brake light flicker indication method |
| CN102343855A (en) * | 2011-07-22 | 2012-02-08 | 公安部交通管理科学研究所 | Lamp signal control device of trailer |
| CN102381244A (en) * | 2011-10-18 | 2012-03-21 | 奇瑞汽车股份有限公司 | Control system and control method for automobile brake lamp |
| CN103747571A (en) * | 2013-12-25 | 2014-04-23 | 浙江吉利控股集团有限公司 | Vehicle speed based brake lamp automatic control method and control apparatus |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20170201 |
|
| WD01 | Invention patent application deemed withdrawn after publication |