CN207747821U - A kind of steering indicating light detecting fault system - Google Patents
A kind of steering indicating light detecting fault system Download PDFInfo
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- CN207747821U CN207747821U CN201721860068.2U CN201721860068U CN207747821U CN 207747821 U CN207747821 U CN 207747821U CN 201721860068 U CN201721860068 U CN 201721860068U CN 207747821 U CN207747821 U CN 207747821U
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- indicating light
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Abstract
The utility model discloses a kind of steering indicating light detecting fault systems, including：First output end of open circuit circuit for detecting, input terminal and steering indicating light connects, the open circuit information for detecting steering indicating light；The second output terminal of short circuit detection circuit, input terminal and steering indicating light connects, the short circuit information for detecting steering indicating light；Car body controller is connect with the output end of the output end of open circuit circuit for detecting and short circuit detection circuit respectively, for exporting failure indication information according to open circuit information or short circuit information.Fault message can be detected using the steering indicating light detecting fault system of the utility model in time, and fault message is supplied to driver, the safety to be formed can be effectively increased.
Description
Technical field
The utility model is related to car light technical field more particularly to a kind of steering indicating light detecting fault systems.
Background technology
Steering indicating light is a kind of important instruction opened when motor vehicles turn to and paid attention to the vehicle and pedestrian that prompt surrounding
Lamp.Usual steering indicating light is opened when motor vehicles are turned, and is closed at the end of motor vehicles are turned, and is neighbouring vehicle and pedestrian
Very intuitive vehicle multidate information instruction is provided, important guarantee is provided for traffic safety.But due to traditional steering indicating light
There is no fault monitoring circuit, therefore, when steering indicating light occur opening a way or open circuit and when failing, fault message can not be supplied in time
Driver, so that increasing the security risk of driving.
Utility model content
In view of the above-mentioned problems, a kind of steering indicating light detecting fault system of the utility model can detect fault message in time,
And fault message is supplied to driver, the safety to be formed can be effectively increased.
In order to solve the above technical problems, a kind of steering indicating light detecting fault system of the utility model, including：
First output end of open circuit circuit for detecting, input terminal and steering indicating light connects, the open circuit for detecting the steering indicating light
Information；
Short circuit detection circuit, input terminal are connect with the second output terminal of the steering indicating light, for detecting the steering indicating light
Short circuit information；
Car body controller, respectively with it is described open circuit circuit for detecting output end and the short circuit detection circuit output end connect
It connects, for exporting failure indication information according to the open circuit information or the short circuit information.
As the improvement of said program, the open circuit circuit for detecting includes：First triode and first switch pipe, wherein
The base stage of first triode is grounded by concatenated first resistor and second resistance, and the first resistor and
The common connection end of the second resistance is connected to the first output end of the steering indicating light, and collector is connected to the first switch
The input terminal of pipe, and the collector is connected to power supply, emitter ground connection by 3rd resistor；
First output end of the first switch pipe is connected to first power supply by the 4th resistance, and second output terminal connects
Ground, first output end connect the car body controller with the common connection end of the 4th resistance；
When the steering indicating light works normally, first triode ON and first switch pipe cut-off so that institute
State the first output end output high level of first switch pipe；When the steering indicating light is opened a way, the first triode cut-off
And the first switch pipe conducting so that the first output end of the first switch pipe exports low level, realizes open circuit detecting.
As the improvement of said program, the first switch pipe includes the second triode, the input of the first switch pipe
End is the base stage of second triode, and the first output end of the first switch pipe is the collector of second triode,
The second output terminal of the first switch pipe is the emitter of second triode.
As the improvement of said program, the first switch pipe includes the first NMOS tube, the input of the first switch pipe
End is the grid of first NMOS tube, and the first output end of the first switch pipe is the source electrode of first NMOS tube, institute
The second output terminal for stating first switch pipe is the drain electrode of first NMOS tube.
As the improvement of said program, the short circuit detection circuit includes：Zener diode, third transistor and second open
Guan Guan, wherein
The negative pole end of the zener diode is connected to the second output terminal of the steering indicating light, positive terminal by the 5th resistance
By the 6th resistance eutral grounding, the common connection end of the positive terminal and the 6th resistance is connected to described by the 7th resistance
The base stage of three triodes；
The collector of the third transistor is connected to the input terminal of second switch pipe, and the collector passes through the 8th electricity
Resistance is connected to the power supply, emitter ground connection；
First output end of the second switch pipe is connected to first power supply, the second output by the 4th resistance
End ground connection, the first output end of the second switch connect the car body controller with the common connection end of the 4th resistance；
When the steering indicating light works normally, the zener diode is operated in reverse breakdown state so that the third
Triode ON and second switch pipe cut-off, the first output end of the second switch pipe export high level；When described turn
When short circuit occurs to lamp, the zener diode cut-off so that the third transistor cut-off and second switch pipe conducting,
First output end of the second switch pipe exports low level, realizes short circuit detecting.
As the improvement of said program, the second switch pipe includes the 4th triode, the input of the second switch pipe
End is the base stage of the 4th triode, and the first output end of the second switch pipe is the collector of the 4th triode,
The second output terminal of the second switch pipe is the emitter of the 4th triode；
As the improvement of said program, the second switch pipe includes the second NMOS tube, the input of the second switch pipe
End is the grid of second NMOS tube, and the first output end of the second switch pipe is the source electrode of second NMOS tube, institute
The second output terminal for stating second switch pipe is the drain electrode of second NMOS tube.
As the improvement of said program, the steering indicating light includes LED light group, and the LED light group is multiple concatenated LED
The input terminal of lamp, the LED light group is connected with constant-current supply to power to the LED light group.
As the improvement of said program, the first output end of the steering indicating light is the cathode of the LED light group, the steering
The second output terminal of lamp is the anode of the LED light group.
As the improvement of said program, the constant-current supply includes voltage increase and current constant power supply, buck constant-current supply, decompression perseverance
Galvanic electricity source or SEPIC constant-current supplies, the constant-current supply match with the quantity of the LED light group and required electric current.
Compared with prior art, the steering indicating light detecting fault system of the utility model, has the advantages that：
(1) the steering indicating light detecting fault system of the utility model can effectively detect the open fault information of steering indicating light and short
Road fault message, and then can fault message be provided to driver by car body controller in time, increase the safety of driving；
(2) steering indicating light can be set to concatenated LED light in the steering indicating light detecting fault system, and using constant-current supply to
Concatenated LED light power supply so that concatenated LED light has brightness uniformity；Steering indicating light detecting fault system；
(3) constant current power source of the steering indicating light detecting fault system can be configured to rise according to the quantity and current capability of steering indicating light
Constant-current supply, buck constant-current supply, decompression constant-current supply or SEPIC constant-current supplies are pressed, steering lamp failure can be effectively improved and detectd
The reliability and portability of examining system.
Description of the drawings
Fig. 1 is a kind of structural schematic diagram of steering indicating light detecting fault system of the utility model embodiment 1.
Fig. 2 is the electrical block diagram that lamp failure detecting system is turned in the utility model embodiment 1.
Fig. 3 is the circuit structure of steering indicating light detecting fault system when steering indicating light is opened a way in the utility model embodiment 1
Schematic diagram.
The circuit structure of steering indicating light detecting fault system when Fig. 4 is steering indicating light segment occurred road in the utility model embodiment 1
Schematic diagram.
Specific implementation mode
Many details are elaborated in the following description in order to fully understand the utility model.But this practicality is new
Type can be much to implement different from the other modes of this description, and those skilled in the art can be without prejudice to the utility model
Similar popularization is done in the case of intension, therefore the utility model is not limited by following public specific embodiment.
Clear, complete description is carried out to the technical solution of the utility model with reference to specific embodiments and the drawings.
As shown in Figure 1, being a kind of structural schematic diagram of steering indicating light detecting fault system of the utility model embodiment 1.
The steering indicating light detecting fault system of the utility model includes：It opens a way circuit for detecting 1, the of input terminal and steering indicating light 3
One output end connects, the open circuit information for detecting steering indicating light 3；Short circuit detection circuit 2, the second of input terminal and steering indicating light 3 are defeated
Outlet connects, the short circuit information for detecting steering indicating light 3；Car body controller 4, respectively with open circuit circuit for detecting 1 output end and
The output end of short circuit detection circuit 2 connects, for exporting failure indication information according to open circuit information or short circuit information.
Specifically, as depicted in figs. 1 and 2, open circuit circuit for detecting 1 includes：(figure is not for first triode Q1 and first switch pipe
Show), wherein the base stage of the first triode Q1 is grounded by concatenated first resistor R1 and second resistance R2, and first resistor R1
The first output end of steering indicating light 3 is connected to the common connection end of second resistance R2, collector is connected to the defeated of first switch pipe
Enter end, and collector is connected to power supply V1, emitter ground connection by 3rd resistor R3；First output end of first switch pipe passes through
4th resistance R4 is connected to the first power supply V1, second output terminal ground connection, the common connection end of the first output end and the 4th resistance R4
Connect car body controller 4；When steering indicating light 3 works normally, the first triode Q1 conductings and the cut-off of first switch pipe so that first
First output end of switching tube exports high level；When steering indicating light 3 is opened a way, the first triode Q1 cut-offs and first switch pipe
Conducting so that the first output end of first switch pipe exports low level, realizes open circuit detecting.
Wherein, first switch pipe can be triode or NMOS tube, for example, as shown in Fig. 2, when first switch pipe is second
When triode Q2, the input terminal of first switch pipe is the base stage of the second triode Q2, and the first output end of first switch pipe is the
The collector of two triode Q2, the second output terminal of first switch pipe are the emitter of the second triode Q2.When first switch pipe
For the first NMOS tube (not shown) when, the input terminal of first switch pipe is the grid of the first NMOS tube, the first of first switch pipe
Output end is the source electrode of the first NMOS tube, and the second output terminal of first switch pipe is the drain electrode of the first NMOS tube.
Further, as shown in Fig. 2, the short circuit detection circuit 2 in embodiment 1 includes：Zener diode D1, the three or three pole
Pipe Q3 and second switch pipe (not shown), wherein the negative pole end of zener diode D1 is connected to steering indicating light 3 by the 5th resistance R5
Second output terminal, positive terminal is grounded by the 6th resistance R6, and the common connection end of positive terminal and the 6th resistance R6 pass through the 7th
Resistance R7 is connected to the base stage of third transistor Q3；The collector of third transistor Q3 is connected to the input terminal of second switch pipe,
And collector is connected to power supply V1, emitter ground connection by the 8th resistance R8；First output end of second switch pipe passes through the 4th
Resistance R4 is connected to the first power supply V1, second output terminal ground connection, and the first output end of second switch is common with the 4th resistance R4's
Connecting pin connects car body controller 4；When steering indicating light 3 works normally, zener diode D1 is operated in reverse breakdown state so that
Third transistor Q3 conductings and the cut-off of second switch pipe, the first output end of second switch pipe export high level；When steering indicating light 3 is sent out
When raw short circuit, zener diode D1 cut-offs so that third transistor Q3 cut-offs and second switch pipe is connected, the of second switch pipe
One output end exports low level, realizes short circuit detecting.
Wherein, second switch pipe can be triode or NMOS tube.For example, as shown in figure 4, when second switch is the four or three
When pole pipe Q4, then the input terminal of second switch pipe is the base stage of the 4th triode Q4, and the first output end of second switch pipe is the
The collector of four triode Q4, the second output terminal of second switch pipe are the emitter of the 4th triode Q4.When second switch pipe
For the second NMOS tube when (not shown), the input terminal of second switch pipe is the grid of the second NMOS tube, the first of second switch pipe
Output end is the source electrode of the second NMOS tube, and the second output terminal of second switch pipe is the drain electrode of the second NMOS tube.
Preferably, in order to improve the consistency of LED light brightness in steering indicating light 3, as shown in Fig. 2, the steering of the utility model
In lamp failure detecting system, steering indicating light 3 includes LED light group, and LED light group is multiple concatenated LED light, the input terminal of LED light group
Constant-current supply V2 is connected with to power to LED light group.Wherein, the first output end of steering indicating light 3 is the cathode of LED light group, is turned to
The second output terminal of lamp 3 is the anode of LED light group.
Preferably, in the steering indicating light detecting fault system of the utility model, constant-current supply V2 includes voltage increase and current constant power supply, rises
It is depressured constant-current supply, decompression constant-current supply or SEPIC constant-current supplies, the quantity and required electric current of constant-current supply V2 and LED light group
Match, and then improves the reliability and portability of the steering indicating light detecting fault system of the utility model.For example, working as LED light
When in group using decompression LED light, then it is permanent need to be configured to decompression according to the quantity and LED light group voltage of decompression LED light for constant-current supply
Galvanic electricity source, to match with the LED light group so that when the LED light group works normally, the first triode Q1 can be connected or
Zener diode D1 can be operated in direction breakdown conditions.
Next, illustrating the steering indicating light open fault of the utility model so that first switch pipe is the second triode Q2 as an example
Work of detection and examination process：
As shown in Fig. 2, when steering indicating light 3 works normally, the negative power supply V1 of steering indicating light 3 is directly transferred to first resistor R1
Upper end, by be arranged obtained after first resistor R1 and second resistance R2 partial pressures the base voltage of the first triode Q1 always greater than
0.7V, therefore the first triode Q1 conductings, when the first triode Q1 is connected, the base voltage of conduction to the second triode Q2 is about
0V, therefore the second triode Q2 cut-offs, the collector of the second triode Q2 export high level；
As shown in figure 3, when steering indicating light 3 is opened a way, first resistor R1 and second resistance R2 ground connection, the first triode Q1
Base stage and emitter between electric current be about 0, therefore the first triode Q1 cut-offs, when the first triode Q1 cut-offs, the one or three
Pole pipe Q1 collectors export high level so that and the base voltage of the second triode Q2 accordingly increases and is more than 0.7V, so that
Second triode Q2 conductings, the collector pin of the second triode Q2 are pulled low so that the collector of the second triode Q2 exports
Low level；
In this way, when the collector that car body controller 4 detects the second triode Q2 exports low level, then realize that open circuit is detectd
It surveys, and then car body controller 4 in time can be believed open fault according to the low level detected come output open circuit failure indication information
Breath is supplied to driver, increases the safety of driving.
It should be understood that when first switch pipe is the first NMOS tube, when steering indicating light 3 is worked normally and is opened a way,
The state change of first NMOS tube is similar to the state change of the second triode Q2, and details are not described herein.
Next, illustrating the steering indicating light short trouble of the utility model so that second switch pipe is the 4th triode Q4 as an example
Work of detection and examination process：
As shown in Fig. 2, when steering indicating light 3 works normally, zener diode D1 is operated in reverse breakdown state, passes through the 6th
After resistance R6 and the 7th resistance R7 partial pressures so that the base voltage of third transistor Q3 is always greater than 0.7V, therefore the three or three pole
Pipe Q3 conductings, when third transistor Q3 is connected, the base voltage of conduction to the 4th triode Q4 is about 0V, therefore the 4th triode
Q4 ends, and the collector of the 4th triode Q4 exports high level；
As shown in figure 4, when short circuit occurs for steering indicating light 3, the resistance of 3 place branch of steering indicating light becomes smaller, branch where steering indicating light 3
The electric current that road is got accordingly increases, and the electric current that branch where zener diode D1 is got accordingly reduces, and then zener diode D1
It is operated in cut-off state so that the electric current for flowing through the 6th resistance R6 and the 7th resistance R7 is about 0, therefore third transistor Q3 is cut
Only, when third transistor Q3 ends, third transistor Q3 collectors export high level so that the base voltage of third transistor Q3
It is corresponding to increase and be more than 0.7V, so that the 4th triode Q4 conductings, the collector pin of the 4th triode Q4 are pulled low, make
The collector for obtaining the 4th triode Q4 exports low level；
In this way, when the collector that car body controller 4 detects the 4th triode Q4 exports low level, then realize that short circuit is detectd
It surveys, and then car body controller 4 in time can be believed short trouble according to the low level detected come output short-circuit failure indication information
Breath is supplied to driver, increases the safety of driving.
It should be understood that when second switch pipe is the second NMOS tube, in the normal work of steering indicating light 3 and segment occurred road,
The state change of second NMOS tube is similar to the state change of the 4th triode Q4, and details are not described herein.
Preferably, in order to simplify 3 detecting fault system of steering indicating light so that the open circuit information and short circuit information energy of steering indicating light 3
Enough to be detected from the same output end, the collector of the second triode Q2 and the collector of the 4th triode Q4 pass through the 4th electricity
Resistance R4 is connected to the common of power supply V1, the collector of the second triode Q2 and the collector of the 4th triode Q4 and the 4th resistance R4
Connecting pin constitutes feedback output end, and then car body controller 4 is then realized and turned when the voltage for detecting feedback output end is level
To 3 detecting fault of lamp.
It is detectd it should be understood that may respectively be the setting open circuit of steering indicating light 3 in the steering indicating light detecting fault system of the utility model
Slowdown monitoring circuit 1 or short circuit detection circuit 2 are detected, it is not limited to scheme with the open fault detecting or short trouble of realizing steering indicating light 3
2~embodiment shown in Fig. 4.
The above descriptions are merely preferred embodiments of the present invention, is not done in any form to the utility model
Limitation, therefore all contents without departing from technical solutions of the utility model, according to the technical essence of the utility model to implementing above
Any simple modification, equivalent change and modification that example is done, are still within the scope of the technical solutions of the present invention.
Claims (10)
1. a kind of steering indicating light detecting fault system, which is characterized in that including：
First output end of open circuit circuit for detecting, input terminal and steering indicating light connects, the open circuit information for detecting the steering indicating light；
Short circuit detection circuit, input terminal are connect with the second output terminal of the steering indicating light, the short circuit for detecting the steering indicating light
Information；
Car body controller is connect with the output end of the output end of the open circuit circuit for detecting and the short circuit detection circuit respectively,
For exporting failure indication information according to the open circuit information or the short circuit information.
2. steering indicating light detecting fault system as described in claim 1, which is characterized in that the open circuit circuit for detecting includes：The
One triode and first switch pipe, wherein
The base stage of first triode is grounded by concatenated first resistor and second resistance, and the first resistor and described
The common connection end of second resistance is connected to the first output end of the steering indicating light, and collector is connected to the first switch pipe
Input terminal, and the collector is connected to power supply, emitter ground connection by 3rd resistor；
First output end of the first switch pipe is connected to first power supply by the 4th resistance, and second output terminal is grounded,
First output end connect the car body controller with the common connection end of the 4th resistance；
When the steering indicating light works normally, first triode ON and the first switch pipe end so that described the
First output end of one switching tube exports high level；When the steering indicating light is opened a way, the first triode cut-off and institute
State the conducting of first switch pipe so that the first output end of the first switch pipe exports low level, realizes open circuit detecting.
3. steering indicating light detecting fault system as claimed in claim 2, which is characterized in that the first switch pipe includes the two or three
Pole pipe, the input terminal of the first switch pipe are the base stage of second triode, the first output end of the first switch pipe
For the collector of second triode, the second output terminal of the first switch pipe is the emitter of second triode.
4. steering indicating light detecting fault system as claimed in claim 2, which is characterized in that the first switch pipe includes first
NMOS tube, the input terminal of the first switch pipe are the grid of first NMOS tube, the first output of the first switch pipe
End is the source electrode of first NMOS tube, and the second output terminal of the first switch pipe is the drain electrode of first NMOS tube.
5. steering indicating light detecting fault system as claimed in claim 2, which is characterized in that the short circuit detection circuit includes：Surely
Press diode, third transistor and second switch pipe, wherein
The negative pole end of the zener diode is connected to the second output terminal of the steering indicating light by the 5th resistance, and positive terminal passes through
The common connection end of 6th resistance eutral grounding, the positive terminal and the 6th resistance is connected to the described 3rd 3 by the 7th resistance
The base stage of pole pipe；
The collector of the third transistor is connected to the input terminal of second switch pipe, and the collector is connected by the 8th resistance
It is connected to the power supply, emitter ground connection；
First output end of the second switch pipe is connected to first power supply by the 4th resistance, and second output terminal connects
Ground, the first output end of the second switch connect the car body controller with the common connection end of the 4th resistance；
When the steering indicating light works normally, the zener diode is operated in reverse breakdown state so that the three or three pole
Pipe is connected and the second switch pipe ends, and the first output end of the second switch pipe exports high level；When the steering indicating light
When short circuit occurs, the zener diode cut-off so that the third transistor cut-off and second switch pipe conducting, it is described
First output end of second switch pipe exports low level, realizes short circuit detecting.
6. steering indicating light detecting fault system as claimed in claim 5, which is characterized in that the second switch pipe includes the four or three
Pole pipe, the input terminal of the second switch pipe are the base stage of the 4th triode, the first output end of the second switch pipe
For the collector of the 4th triode, the second output terminal of the second switch pipe is the emitter of the 4th triode.
7. steering indicating light detecting fault system as claimed in claim 5, which is characterized in that the second switch pipe includes second
NMOS tube, the input terminal of the second switch pipe are the grid of second NMOS tube, the first output of the second switch pipe
End is the source electrode of second NMOS tube, and the second output terminal of the second switch pipe is the drain electrode of second NMOS tube.
8. steering indicating light detecting fault system as described in claim 1, which is characterized in that the steering indicating light includes LED light group, institute
It is multiple concatenated LED light to state LED light group, and the input terminal of the LED light group is connected with constant-current supply to supply the LED light group
Electricity.
9. steering indicating light detecting fault system as claimed in claim 8, which is characterized in that the first output end of the steering indicating light is
The cathode of the LED light group, the second output terminal of the steering indicating light are the anode of the LED light group.
10. steering indicating light detecting fault system as claimed in claim 8, which is characterized in that the constant-current supply includes that boosting is permanent
Galvanic electricity source, buck constant-current supply, decompression constant-current supply or SEPIC constant-current supplies, the constant-current supply and the LED light group
Quantity and required electric current match.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721860068.2U CN207747821U (en) | 2017-12-26 | 2017-12-26 | A kind of steering indicating light detecting fault system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721860068.2U CN207747821U (en) | 2017-12-26 | 2017-12-26 | A kind of steering indicating light detecting fault system |
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| Publication Number | Publication Date |
|---|---|
| CN207747821U true CN207747821U (en) | 2018-08-21 |
Family
ID=63150528
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN201721860068.2U Active CN207747821U (en) | 2017-12-26 | 2017-12-26 | A kind of steering indicating light detecting fault system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108082041A (en) * | 2017-12-26 | 2018-05-29 | 广东晶科电子股份有限公司 | A kind of steering indicating light detecting fault system |
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2017
- 2017-12-26 CN CN201721860068.2U patent/CN207747821U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108082041A (en) * | 2017-12-26 | 2018-05-29 | 广东晶科电子股份有限公司 | A kind of steering indicating light detecting fault system |
| CN108082041B (en) * | 2017-12-26 | 2024-07-09 | 广东晶科电子股份有限公司 | Steering lamp fault detection system |
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