CN105172678B - Brake lamp Failure Alarm control device - Google Patents
Brake lamp Failure Alarm control device Download PDFInfo
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- CN105172678B CN105172678B CN201510572860.7A CN201510572860A CN105172678B CN 105172678 B CN105172678 B CN 105172678B CN 201510572860 A CN201510572860 A CN 201510572860A CN 105172678 B CN105172678 B CN 105172678B
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- brake lamp
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- car body
- warning device
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- 230000005611 electricity Effects 0.000 claims description 8
- 238000005070 sampling Methods 0.000 claims description 7
- 238000007689 inspection Methods 0.000 claims description 4
- 230000000694 effects Effects 0.000 description 8
- 238000001514 detection method Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000004140 cleaning Methods 0.000 description 2
- 239000012141 concentrate Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
Abstract
Parts are installed additional the purpose of the present invention is to propose to one kind few, cost increase is few, and overall aesthetic degree in driver's cabin is not influenceed, driver can be allowed to find the brake lamp Failure Alarm control device of brake lamp failure in time.The brake lamp Failure Alarm control device is made up of brake lamp, car body controller and warning device, and the car body controller is connected with brake lamp, warning device respectively；The car body controller judges the failure situation of brake lamp, and sends control command to warning device, is alarmed by warning device；Or car body controller receives the fault message that brake lamp is transmitted, and control command is sent to warning device, alarmed by warning device.The brake lamp Failure Alarm control device of the present invention directly borrows existing combination instrument and car body controller is realized, a connection brake lamp and BCM wire harness need to only be increased on this basis, it is few with parts are installed additional, increase cost few, and the overall aesthetic degree of driver's cabin is not had any impact, the features such as implementation is simple.
Description
Technical field
The present invention relates to a kind of brake lamp Failure Alarm control device.
Background technology
Numerous vehicles on existing China Auto Market are after brake lamp damage, and driver is difficult timely discovery, easily triggers and hands over
Interpreter's event, and regulation is not made as alarm to brake lamp operational failure and is distinctly claimed.Brake failure on existing combination instrument refers to
Show that the bright warning reason of lamp mainly there are two kinds：First, ABS is shown（Anti-lock braking system in automobiles）The system that module is sent out is certainly
Inspection, brake block is damaged, wheel speed sensors do not work, module does not work etc. reason in itself and make ABS-system fault, EBD（Deceleration of electrons
Power distribution system）Fault alarm is indicated；2nd, hand braking status indicator lamp is cancelled in order to reduce cost, with the trouble light that brakes
Make the hand braking status display replaced（To show whether parking brake unclamps）.And current Patents, for example：A kind of braking automobile
Lamp failure warning system（Number of patent application： 201310634764.1）, a kind of fault monitor for automobile brake light（Patent application
Number： 200920197918.4）Deng all because warning device module need to separately be set, to add parts more and cause cost to greatly improve,
It is unfavorable for the overall appearance in driver's cabin, and the not extensive use in automobile market.
The content of the invention
Parts are installed additional the purpose of the present invention is to propose to one kind few, cost increase is few, and overall appearance in driver's cabin is not influenceed
Degree, can allow driver to find the brake lamp Failure Alarm control device of brake lamp failure in time.
The brake lamp Failure Alarm control device of the present invention is made up of brake lamp, car body controller and warning device, described
Car body controller is connected with brake lamp, warning device respectively；The car body controller judges the failure situation of brake lamp, and to report
Alarm device sends control command, is alarmed by warning device；Or car body controller receives the fault message that brake lamp is transmitted,
And control command is sent to warning device, alarmed by warning device.
In above-mentioned brake lamp Failure Alarm control device, it is only necessary to enable a vacant PIN conduct of car body controller
The input of brake lights failure signal, changes the PCB of car body controller, to increase the input end interface electricity of brake lamp part
Road, and increase, to the software processing of the faulty component, hardware modifications are less, it is easy to accomplish.
Specifically, there are following two situations：
1st, the brake lamp is bulb-type brake lamp, and the car body controller is judged by detecting brake lamp consumption electric current
Whether brake lamp breaks down.
Physical circuit is as follows：The car body controller is connected by a bleeder circuit with brake lamp, the bleeder circuit by
First resistor, second resistance are constituted, and one end of the first resistor is connected with brake lamp signal input part, and the other end passes through second
Resistance eutral grounding, the car body controller is connected with the contact of first resistor and second resistance.The electric current of brake lamp flows through partial pressure electricity
Lu Shi, can produce voltage in second resistance, and car body controller is by detecting the voltage change at second resistance two ends, you can know
The curent change of brake lamp, so as to detect whether brake lamp open circuit fault occurs.
2nd, the brake lamp be LED formula brake lamps, the brake lamp by self-inspection judge brake lamp whether operational failure.
Physical circuit is as follows：The brake lamp includes first resistor, second resistance, 3rd resistor, the 4th resistance, the 5th electricity
Resistance, the first triode, the second triode, the first diode, voltage-regulator diode, sampling diode and by LED and current limliting electricity
Hinder the lamp string being in series；The positive pole of the LED is connected with the power end of brake lamp, and the negative pole of LED passes through current-limiting resistance
Ground connection；One end of the first resistor is connected with the power end of brake lamp, and the other end is grounded by second resistance；The sampling two
The positive pole and first resistor of pole pipe are connected with the contact of second resistance, sample the negative pole and LED and current-limiting resistance of diode
Contact is connected；One end of the 3rd resistor is connected with the power end of brake lamp, and the other end passes through the 4th resistance eutral grounding；Described
The base stage and first resistor of one triode are connected with the contact of second resistance, the colelctor electrode and 3rd resistor of the first triode and the
The contact of four resistance is connected, the grounded emitter of the first triode；The base stage and 3rd resistor and the 4th of second triode
The contact of resistance is connected, and the colelctor electrode of the second triode is connected by the 5th resistance with the power end of brake lamp, the second triode
Grounded emitter；The colelctor electrode of second triode is grounded by voltage-regulator diode, and the colelctor electrode of the second triode leads to
The first diode is crossed to be connected with car body controller.
The Cleaning Principle of foregoing circuit is as follows：
The power supply of brake lamp is generally 13.5V, i.e., the significantly larger than general high level 5V often said.In brake lamp normal work
When, due to the effect of current-limiting resistance so that the cathode voltage of LED is higher than high level 5V, the base voltage of the first triode exists
It is high level that first resistor is lower with the effect of second resistance partial pressure, and the base voltage of such first triode can be negative less than LED
Pole tension, now the first triode is conducting state, the collector voltage of the first triode（That is the base stage electricity of the second triode
Pressure）It is pulled low so that the second triode disconnects, the colelctor electrode of the second triode does not have electric current to flow through, the current collection of the second triode
The voltage of pole is high level；
When open circuit occurs in brake lamp, current-limiting resistance does not have electric current to flow through so that the cathode voltage of LED becomes 0V, this
The base voltage of the triode of sample first will be pulled low, and now the first triode is off-state, the colelctor electrode of the first triode
Voltage（That is the base voltage of the second triode）It is high level under 3rd resistor and the effect of the partial pressure of the 4th resistance so that second
Triode ON, the collector voltage of the second triode is pulled low；
The collector voltage that car body controller passes through the second triode of detection, you can detect whether brake lamp short circuit occurs
Failure.Above-mentioned voltage-regulator diode, the first diode can protect the interface circuit of car body controller.
Further, the warning device is combination instrument, to make full use of existing part, saves cost.In addition, described
Car body controller is connected by CAN with warning device, to facilitate connection.For combination instrument, CAN instrument is at present
Table, signal by two PIN of CAN-H and CAN-L terminate into, therefore need to only be encoded with again on brake trouble light indicate it is soft
Part part, combination instrument is accelerated the brake glittering frequency of trouble light, made at quick flashing when receiving brake lamp failure condition signal
Reason, to distinguish original brake fault alarm pattern.
The brake lamp Failure Alarm control device of the present invention is not individually to each brake lamp（Including automobile tail or so each one
Individual brake lamp and a high-mount brake lamp）Make from the aspects of police instruction, security the device with individually to each brake lamp report
Alert effect is identical, therefore the reason in view of in terms of cost, the complexity that installs additional, and simply all on existing automobile stop
Car light, which puts together to concentrate, to be judged, as long as mode is to have the brake failure warning on a brake lamp failure job, combination instrument
Lamp is to make quick flashing processing, can timely and conveniently remind human pilot.
The brake lamp Failure Alarm control device of the present invention directly borrows existing combination instrument and car body controller is realized,
A connection brake lamp and BCM wire harness need to only be increased on this basis, few with parts are installed additional, increase cost is few and right
The overall aesthetic degree of driver's cabin does not have any impact, the features such as implementation is simple.
Brief description of the drawings
Fig. 1 is the schematic diagram of the brake lamp Failure Alarm control device of the present invention.
Fig. 2 is the failure detector circuit schematic diagram of bulb-type brake lamp.
Fig. 3 is the failure detector circuit schematic diagram of LED formula brake lamps.
Accompanying drawing is indicated：First divider resistance：R1；Second divider resistance：R2；First resistor：R3；Second resistance：R4；3rd
Resistance：R5；4th resistance：R6；5th resistance：R7；First triode：Q1；Second triode：Q2；First diode：D1；Surely
Press diode：D2；Sample diode：D3、D4；LED L1~L6；Current-limiting resistance R8, R9.
Embodiment
It is for example involved each to the embodiment of the present invention by the description to embodiment below against accompanying drawing
Mutual alignment and annexation, the effect of each several part and operation principle between the shape of component, construction, each several part etc. are made into one
The detailed description of step.
Embodiment 1：
As shown in Figure 1, 2, the brake lamp Failure Alarm control device of the present embodiment is by bulb-type brake lamp, car body controller
And warning device（That is combination instrument）Constitute, the car body controller is connected by a bleeder circuit with brake lamp, the partial pressure
Circuit is made up of the first divider resistance R1, the second divider resistance R2, one end and the brake modulating signal of the first divider resistance R1
Input is connected, and the other end is grounded by the second divider resistance R2, the car body controller and the first divider resistance R1 and second
Divider resistance R2 contact is connected.When the electric current of brake lamp flows through bleeder circuit, voltage can be produced on the second divider resistance R2,
The voltage change that car body controller passes through the second divider resistance R2 two ends of detection, you can know the curent change of brake lamp, so that
Detect whether brake lamp open circuit fault occurs；
Car body controller is connected by CAN with warning device, and car body controller judges the failure situation of brake lamp, and
Control command is sent to warning device when brake lamp breaks down, is alarmed by warning device.
Certainly, above-mentioned bleeder circuit can also be integrated in car body controller.
Embodiment 2：
As shown in Figure 1,3, the brake lamp Failure Alarm control device of the present embodiment is by LED formulas brake lamp, car body controller
And warning device（That is combination instrument）Constitute, car body controller is connected with brake lamp, warning device respectively, and brake lamp passes through self-inspection
Judge brake lamp whether operational failure, car body controller receives the fault message that transmits of brake lamp, and is broken down in brake lamp
When send control command to warning device, alarmed by warning device.
The self-checking circuit of brake lamp is as follows：The brake lamp include first resistor R3, second resistance R4,3rd resistor R5,
4th resistance R6, the 5th resistance R7, the first triode Q1, the second triode Q2, the first diode D1, voltage-regulator diode D2, take
Sample diode D3, D4 and the first lamp string being in series by LED L1~L3 and current-limiting resistance R8, by LED L4~L6 and
The second lamp string that current-limiting resistance R9 is in series；The positive pole of the LED L3 is connected with the power end of brake lamp, LED L3's
Negative pole is grounded by current-limiting resistance R8；The positive pole of the LED L6 is connected with the power end of brake lamp, and LED L6 negative pole leads to
Cross current-limiting resistance R9 ground connection；
One end of the first resistor R3 is connected with the power end of brake lamp, and the other end is grounded by second resistance R4；Institute
The positive pole and first resistor R3 for stating sampling diode D3 are connected with second resistance R4 contact, sample diode D3 negative pole with
LED L3 is connected with current-limiting resistance R8 contact；Sampling diode D4 positive pole and connecing for first resistor R3 and second resistance R4
Point is connected, and sampling diode D4 negative pole and LED L6 are connected with current-limiting resistance R9 contact；
One end of the 3rd resistor R5 is connected with the power end of brake lamp, and the other end is grounded by the 4th resistance R6；Institute
The base stage and first resistor R3 for stating the first triode Q1 are connected with second resistance R4 contact, the first triode Q1 colelctor electrode and
3rd resistor R5 is connected with the 4th resistance R6 contact, the first triode Q1 grounded emitter；The second triode Q2's
Base stage and 3rd resistor R5 are connected with the 4th resistance R6 contact, and the second triode Q2 colelctor electrode is by the 5th resistance R7 with stopping
The power end of car light is connected, the second triode Q2 grounded emitter；The colelctor electrode of the second triode Q2 passes through voltage stabilizing two
Pole pipe D2 is grounded, and the second triode Q2 colelctor electrode is connected by the first diode D1 with car body controller.
Above-mentioned first triode Q1, the second triode Q2 are NPN type triode, the first diode D1 negative pole and vehicle body
Controller is connected, and positive pole is connected with the second triode Q2 colelctor electrode.
The Cleaning Principle of foregoing circuit is as follows：
The supply voltage of brake lamp is 13.5V, i.e., the significantly larger than general high level 5V often said.In brake lamp normal work
When, due to current-limiting resistance R8（R9）Effect so that LED L3 and L6 cathode voltage are above high level 5V, the one or three pole
Pipe Q1 base voltage is high level, such first triode Q1 base under first resistor R3 and the effect of second resistance R4 partial pressures
Pole tension can be less than the cathode voltage of LED, and now the first triode Q1 is conducting state, the first triode Q1 colelctor electrode electricity
Pressure（That is the second triode Q2 base voltage）It is pulled low so that the second triode Q2 disconnects, the second triode Q2 colelctor electrode
There is no electric current to flow through, the voltage of the second triode Q2 colelctor electrode is high level；
When open circuit occurs in brake lamp, current-limiting resistance does not have electric current to flow through so that LED L3 or L6 cathode voltage become
0V, such first triode Q1 base voltage will be pulled low, and now the first triode Q1 is off-state, the first triode
Q1 collector voltage（That is the second triode Q2 base voltage）Under 3rd resistor R5 and the 4th resistance R6 partial pressure effect
For high level so that the second triode Q2 is turned on, the second triode Q2 collector voltage is pulled low；
The collector voltage that car body controller passes through the second triode Q2 of detection, you can detect whether brake lamp occurs short
Road failure.Above-mentioned voltage-regulator diode D2, the first diode D1 can protect the interface circuit of car body controller.
Claims (3)
1. a kind of brake lamp Failure Alarm control device, is made up of brake lamp, car body controller and warning device, the vehicle body control
Device processed is connected with brake lamp, warning device respectively；The car body controller judges the failure situation of brake lamp, and to warning device
Control command is sent, is alarmed by warning device；Or car body controller receives the fault message that transmits of brake lamp, and to report
Alarm device sends control command, is alarmed by warning device；The brake lamp is LED formula brake lamps, and the brake lamp passes through
Self-inspection judge brake lamp whether operational failure；It is characterized in that the brake lamp includes first resistor, second resistance, the 3rd electricity
Resistance, the 4th resistance, the 5th resistance, the first triode, the second triode, the first diode, voltage-regulator diode, sampling diode with
And the lamp string being in series by LED and current-limiting resistance；The positive pole of the LED is connected with the power end of brake lamp, LED
Negative pole is grounded by current-limiting resistance；One end of the first resistor is connected with the power end of brake lamp, and the other end passes through the second electricity
Resistance ground connection；It is described sampling diode positive pole and first resistor be connected with the contact of second resistance, sample diode negative pole with
LED is connected with the contact of current-limiting resistance；One end of the 3rd resistor is connected with the power end of brake lamp, and the other end passes through
Four resistance eutral groundings；The base stage and first resistor of first triode are connected with the contact of second resistance, the collection of the first triode
Electrode and 3rd resistor are connected with the contact of the 4th resistance, the grounded emitter of the first triode；The base of second triode
Pole and 3rd resistor are connected with the contact of the 4th resistance, and the colelctor electrode of the second triode passes through the 5th resistance and the power supply of brake lamp
End is connected, the grounded emitter of the second triode；The colelctor electrode of second triode is grounded by voltage-regulator diode, and second
The colelctor electrode of triode is connected by the first diode with car body controller.
2. brake lamp Failure Alarm control device according to claim 1, it is characterised in that the warning device is combination
Instrument.
3. brake lamp Failure Alarm control device according to claim 1, it is characterised in that the car body controller passes through
CAN is connected with warning device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510572860.7A CN105172678B (en) | 2015-09-10 | 2015-09-10 | Brake lamp Failure Alarm control device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510572860.7A CN105172678B (en) | 2015-09-10 | 2015-09-10 | Brake lamp Failure Alarm control device |
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| Publication Number | Publication Date |
|---|---|
| CN105172678A CN105172678A (en) | 2015-12-23 |
| CN105172678B true CN105172678B (en) | 2017-07-11 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510572860.7A Active CN105172678B (en) | 2015-09-10 | 2015-09-10 | Brake lamp Failure Alarm control device |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101439691A (en) * | 2008-12-12 | 2009-05-27 | 奇瑞汽车股份有限公司 | Brake lamp fault monitoring apparatus and method |
| JP2011225043A (en) * | 2010-04-16 | 2011-11-10 | Stanley Electric Co Ltd | Failure sensing device of vehicular lighting fixture |
| CN102837639A (en) * | 2012-08-28 | 2012-12-26 | 奇瑞汽车股份有限公司 | Brake lamp detection and breakdown alternative method |
| CN104704916A (en) * | 2012-10-15 | 2015-06-10 | 大陆汽车有限公司 | Method and apparatus for the diagnosis of faulty light-emitting means |
| CN104742799A (en) * | 2015-03-31 | 2015-07-01 | 奇瑞汽车股份有限公司 | LED steering lamp control circuit and control method thereof |
-
2015
- 2015-09-10 CN CN201510572860.7A patent/CN105172678B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101439691A (en) * | 2008-12-12 | 2009-05-27 | 奇瑞汽车股份有限公司 | Brake lamp fault monitoring apparatus and method |
| JP2011225043A (en) * | 2010-04-16 | 2011-11-10 | Stanley Electric Co Ltd | Failure sensing device of vehicular lighting fixture |
| CN102837639A (en) * | 2012-08-28 | 2012-12-26 | 奇瑞汽车股份有限公司 | Brake lamp detection and breakdown alternative method |
| CN104704916A (en) * | 2012-10-15 | 2015-06-10 | 大陆汽车有限公司 | Method and apparatus for the diagnosis of faulty light-emitting means |
| CN104742799A (en) * | 2015-03-31 | 2015-07-01 | 奇瑞汽车股份有限公司 | LED steering lamp control circuit and control method thereof |
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| Publication number | Publication date |
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| CN105172678A (en) | 2015-12-23 |
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