CN205573742U - Vehicle-mounted electronic ECU system with automatic fault detection function for automobile brake lamp - Google Patents
Vehicle-mounted electronic ECU system with automatic fault detection function for automobile brake lamp Download PDFInfo
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- CN205573742U CN205573742U CN201620321238.9U CN201620321238U CN205573742U CN 205573742 U CN205573742 U CN 205573742U CN 201620321238 U CN201620321238 U CN 201620321238U CN 205573742 U CN205573742 U CN 205573742U
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- 238000001514 detection method Methods 0.000 title claims abstract description 46
- 230000015556 catabolic process Effects 0.000 claims description 12
- 230000007257 malfunction Effects 0.000 claims description 4
- 238000006243 chemical reaction Methods 0.000 claims description 3
- 206010039203 Road traffic accident Diseases 0.000 abstract 1
- 230000005611 electricity Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 230000000087 stabilizing effect Effects 0.000 description 2
- 230000005355 Hall effect Effects 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004020 luminiscence type Methods 0.000 description 1
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- 238000007789 sealing Methods 0.000 description 1
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Abstract
The utility model relates to an on-vehicle electron ECU system with car brake light fault automatic detection function, include: the automatic fault detection unit for the automobile brake lamp and the main processor module are arranged; still include in the car brake light trouble automatic checkout unit: the slave processor module is suitable for converting the fault judgment level into a serial port signal and sending the serial port signal to the master processor module; the main processor module is connected with the central control display module to reflect the working states of the left brake lamp and the right brake lamp; the utility model discloses a circuit structure of low-power consumption has realized all carrying out once detection to the brake lamp when stepping on the brake at every turn, has strong in real-time nature, and good reliability's advantage can in time discover the brake lamp trouble, avoids because the traffic accident that the brake lamp trouble caused.
Description
Technical field
This utility model belongs to technical field of automotive electronics, particularly to a kind of vehicle electronics ECU system.
Background technology
Automobile has become as the vehicles commonly used in people's daily life, when emergency occurs, and department
Machine generally rely on visual signal (such as brake lamp) obtain warning, therefore brake lamp the most intact be to ensure that driving peace
One of full major measure.The brake lamp of current most of low and middle-grade automobiles does not has automatic failure detection function,
When brake lamp breaks down, driver self is difficult to find, accordingly, it would be desirable to utility model goes out a kind of brake lamp event
Barrier automatic detection device is installed on automobile, and once brake lamp cisco unity malfunction, alarm lamp is lighted automatically
Prompting driver's on-call maintenance changes brake lamp, reduces the rear-ended car accident caused because of brake lights failure.
Utility model content
The purpose of this utility model is to provide a kind of braking automobile lamp failure automatic detection unit, to realize stopping
Car light detects automatically, feeds back fault in time, to avoid the rear-ended car accident caused because of brake lights failure.
In order to solve above-mentioned technical problem, this utility model provides a kind of automatic with braking automobile lamp failure
The vehicle electronics ECU system of detection function, including: braking automobile lamp failure automatic detection unit, main process
Device module；Also include in described braking automobile lamp failure automatic detection unit: from processor module, should from from
It is that rs 232 serial interface signal sends to main processor modules that reason device module is suitable to breakdown judge level conversion；Described main place
Reason device module is connected with middle control display module, to react the duty of left and right brake lamp.
Further, described braking automobile lamp failure automatic detection unit includes: left and right brake lamp detection module,
The circuit structure of described left and right brake lamp detection module is identical, all includes: be used for detecting brake lamp work electricity
The current detection circuit of stream, the voltage comparator circuit being connected with this current detection circuit, this voltage comparator circuit
By the output level of current detection circuit compared with reference voltage, to obtain breakdown judge level, and should
Breakdown judge level accesses to fault display circuit, to react the duty of left and right brake lamp.
Further, described current detection circuit includes: current detecting chip, the electric current of this current detecting chip
Input is connected with the supply line of brake lamp, and the brake lamp operating current of acquisition is turned by this current detecting chip
It is changed to corresponding output level；Described voltage comparator circuit includes: voltage comparator, this voltage comparator same
Holding the voltage output end with current detecting chip to be connected mutually, its end of oppisite phase accesses a reference voltage, and this electricity
The outfan of pressure comparator is suitable to a display lamp job in driving malfunction display circuit；Work as brake lights failure, i.e.
When current detection circuit is not detected by brake lamp operating current, the output level of described current detecting chip is less than
Reference voltage, then voltage comparator output breakdown judge level is low level, and display lamp lights.
The beneficial effects of the utility model are, vehicle electronics ECU system of the present utility model, pass through low-power consumption
Circuit structure, it is achieved that all brake lamp is carried out one-time detection when stepping on brake every time, there is real-time
By force, the advantage of good reliability, it is possible to find brake lights failure in time, it is to avoid owing to brake lights failure causes
Vehicle accident.
Accompanying drawing explanation
With embodiment, this utility model is further illustrated below in conjunction with the accompanying drawings.
Fig. 1 is the theory diagram of vehicle electronics ECU system of the present utility model；
Fig. 2 is the circuit theory diagrams of braking automobile lamp failure automatic detection unit of the present utility model.
Detailed description of the invention
Presently in connection with accompanying drawing, this utility model is described in further detail.These accompanying drawings are showing of simplification
Being intended to, basic structure of the present utility model is described the most in a schematic way, therefore it only shows and this utility model
Relevant composition.
Embodiment 1
As it is shown in figure 1, a kind of vehicle-mounted with automobile brake lamp automatic failure detection function of the present utility model
Electronics ECU system, including: braking automobile lamp failure automatic detection unit, main processor modules；Described vapour
Also include in car brake lights failure automatic detection unit: from processor module, should from processor module be suitable to by
Breakdown judge level conversion is that rs 232 serial interface signal sends to main processor modules；Described main processor modules and middle control
Display module is connected, to react the duty of left and right brake lamp.
Described braking automobile lamp failure automatic detection unit, including: left and right brake lamp detection module, this left side,
Right brake lamp detection module is suitable to when brake is stepped on, to detect and to react the duty of left and right brake lamp.
The circuit structure of described left and right brake lamp detection module is identical and all includes: be used for detecting brake lamp work
Making the current detection circuit of electric current, the voltage comparator circuit being connected with this current detection circuit, this voltage ratio is relatively
Circuit by the output level of current detection circuit compared with reference voltage, to obtain breakdown judge level, and
This breakdown judge level is accessed to fault display circuit, to react the duty of left and right brake lamp.
As in figure 2 it is shown, concrete, described current detection circuit includes: current detecting chip, and this electric current is examined
The current input terminal surveying chip is connected with the supply line of brake lamp, the brake that this current detecting chip will obtain
Lamp operating current is converted to corresponding output level；Described voltage comparator circuit includes: voltage comparator, this electricity
The in-phase end of pressure comparator is connected with the voltage output end of current detecting chip, and its end of oppisite phase accesses a benchmark electricity
Press, and the outfan of this voltage comparator is suitable to a display lamp job in driving malfunction display circuit；When stopping
When car light fault, i.e. current detection circuit are not detected by brake lamp operating current, described current detecting chip
Output level is less than reference voltage, then voltage comparator output breakdown judge level is low level, and display lamp is bright
Rise.
Further, described current detecting chip is such as but not limited to using current detecting chip ACS712, described
Reference voltage is such as but not limited to selecting 2.6V；And display lamp is such as but not limited to using light emitting diode
(LED1 and LED2).
Further, this braking automobile lamp failure automatic detection unit is suitable to from Vehicular accumulator cell power taking, and it includes 5V
Voltage stabilizing module, such as but not limited to the 5V Voltage stabilizing module using 7805 compositions.
On the basis of embodiment 1, the operation principle of this braking automobile lamp failure automatic detection unit is carried out
Describe in detail.
(1) left and right brake lamp is all normal, steps on brake S1, and two brake lamps are bright, and electric current is by left current detecting
Chip U2, right current detecting chip U3, the voltage of two chips exports 7 feet and is 2.8V, left voltage comparator
The inverting input of U4 and right voltage comparator U4A is 2.6V, normal phase input end > inverting input, left electricity
Pressure comparator U4 and right voltage comparator U4A is all output as high level, and LED 1, LED2 are not
Bright.
(2) two brake lamps have a damage (as bad in left brake lamp), owing to left brake lamp is bad, is stepping on
During brake S1, IP+, IP-end of left current detecting chip U2 does not has electric current, and its voltage is output as 2.5V,
Voltage comparator U4 inverting input is 2.6V, and normal phase input end is less than inverting input, voltage comparator
U4 is output as low level, and red light emitting diodes LED1 is lit, and instruction left side brake lamp is bad, needs in time
Maintenance is changed；Right current detecting chip U3 current detecting chip I P+, IP-have electric current, and its voltage is output as
2.8V, the inverting input of voltage comparator U4A is 2.6V, therefore the normal phase input end of voltage comparator U4A
More than inverting input, voltage comparator U4A is output as high level, and red light emitting diodes LED2 does not works.
(3) two brake lamps are the worst, when stepping on brake S1, and left current detecting chip U2, right current detecting
IP+, IP-of chip U3 do not have electric current, and its voltage is output as 2.5V, and voltage comparator U4, voltage ratio are relatively
Device U4A inverting input is 2.6V, therefore the normal phase input end of two voltage comparators is respectively less than inverting input,
Therefore, two red light emitting diodes are all lighted by two voltage comparators, show that two brake lamps are all broken, and need
Change in time.
As in figure 2 it is shown, this braking automobile lamp failure automatic detection unit has the advantage that
(1) design of 5V mu balanced circuit requires that load current is milliampere level (low power consumption), loads as electric resistance partial pressure
Circuit, comprising: resistance R2, resistance R3, resistance R1, resistance R4, red light emitting diodes LED1,
Red light emitting diodes LED2；When two brake lamps are normal, load as resistor voltage divider circuit, i.e. resistance R2,
Resistance R3, its electric current is 0.24mA；When left (right) brake lamp bad time, load as resistor voltage divider circuit, i.e.
Resistance R2, resistance R3, resistance R1, red light emitting diodes LED1, electric current is 25mA；When two brake lamps
In all bad times, load as resistor voltage divider circuit, i.e. resistance R2, resistance R3, resistance R1, red light emitting diodes
LED1, resistance R4, red light emitting diodes LED2, now electric current is 50mA, therefore whole circuit is in low
Power consumption state (maximum power dissipation is less than 250 milliwatts).
(2) current comparison circuit design requires that the resistance sealing in circuit must be little, does not affect the brightness of brake lamp,
Therefore using the current detecting chip ACS712 range ± 5A chip with Hall effect, this chip importation is
One section lead, resistance the least (1.2m Ω).
(3) voltage comparator circuit design requires when two brake lamps are normal, and corresponding light emitting diode does not works,
When occurring damaging, ability is the brightest, therefore voltage comparator uses LM339, its inverting input voltage design 2.6V.
(4) fault display circuit design requires that light emitting diode is low power LED, for protection luminescence
Diode, series resistance R4 is 120 Ω.
With above-mentioned according to desirable embodiment of the present utility model for enlightenment, by above-mentioned description, relevant
Staff can carry out various change completely in the range of without departing from this utility model technological thought
And amendment.The content that the technical scope of this utility model is not limited in description, it is necessary to root
Its technical scope is determined according to right.
Claims (3)
1., with a vehicle electronics ECU system for automobile brake lamp automatic failure detection function, its feature exists
In, including: braking automobile lamp failure automatic detection unit, main processor modules；
Also include in described braking automobile lamp failure automatic detection unit: from processor module, should be from processor
It is that rs 232 serial interface signal sends to main processor modules that module is suitable to breakdown judge level conversion；
Described main processor modules is connected with middle control display module, to react the duty of left and right brake lamp.
Vehicle electronics ECU system the most according to claim 1, it is characterised in that described braking automobile
Lamp failure automatic detection unit includes: left and right brake lamp detection module, and the detection of described left and right brake lamp
The circuit structure of module is identical, all includes:
For detecting the current detection circuit of brake lamp operating current, the voltage being connected with this current detection circuit
Comparison circuit, this voltage comparator circuit by the output level of current detection circuit compared with reference voltage, with
Obtain breakdown judge level, and this breakdown judge level is accessed to fault display circuit, to react left and right
The duty of brake lamp.
Vehicle electronics ECU system the most according to claim 2, it is characterised in that described current detecting
Circuit includes: current detecting chip, the current input terminal of this current detecting chip and the supply line of brake lamp
Being connected, the brake lamp operating current of acquisition is converted to corresponding output level by this current detecting chip；
Described voltage comparator circuit includes: voltage comparator, the in-phase end of this voltage comparator and current detecting
The voltage output end of chip is connected, and its end of oppisite phase accesses a reference voltage, and the output of this voltage comparator
End is suitable to a display lamp job in driving malfunction display circuit；
Working as brake lights failure, when i.e. current detection circuit is not detected by brake lamp operating current, described electric current is examined
The output level surveying chip is less than reference voltage, then voltage comparator output breakdown judge level is low level,
Display lamp lights.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620321238.9U CN205573742U (en) | 2016-04-15 | 2016-04-15 | Vehicle-mounted electronic ECU system with automatic fault detection function for automobile brake lamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620321238.9U CN205573742U (en) | 2016-04-15 | 2016-04-15 | Vehicle-mounted electronic ECU system with automatic fault detection function for automobile brake lamp |
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| Publication Number | Publication Date |
|---|---|
| CN205573742U true CN205573742U (en) | 2016-09-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620321238.9U Expired - Fee Related CN205573742U (en) | 2016-04-15 | 2016-04-15 | Vehicle-mounted electronic ECU system with automatic fault detection function for automobile brake lamp |
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| CN (1) | CN205573742U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110356316A (en) * | 2019-06-28 | 2019-10-22 | 潍柴动力股份有限公司 | Car lamp control system |
| CN113829993A (en) * | 2021-08-16 | 2021-12-24 | 奇瑞商用车（安徽）有限公司 | Motor vehicle brake lamp fault reminding system |
| CN114590192A (en) * | 2021-11-04 | 2022-06-07 | 江苏叶迪电子有限公司 | Automobile lamp with automatic fault detection and regulation functions |
-
2016
- 2016-04-15 CN CN201620321238.9U patent/CN205573742U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110356316A (en) * | 2019-06-28 | 2019-10-22 | 潍柴动力股份有限公司 | Car lamp control system |
| CN113829993A (en) * | 2021-08-16 | 2021-12-24 | 奇瑞商用车（安徽）有限公司 | Motor vehicle brake lamp fault reminding system |
| CN114590192A (en) * | 2021-11-04 | 2022-06-07 | 江苏叶迪电子有限公司 | Automobile lamp with automatic fault detection and regulation functions |
| CN114590192B (en) * | 2021-11-04 | 2023-08-08 | 江苏叶迪电子有限公司 | Automobile lamp with automatic fault detection and adjustment function |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160914 Termination date: 20180415 |