CN205916027U - Failure diagnosis circuit of vehicle and indicator - Google Patents
Failure diagnosis circuit of vehicle and indicator Download PDFInfo
- Publication number
- CN205916027U CN205916027U CN201620839469.9U CN201620839469U CN205916027U CN 205916027 U CN205916027 U CN 205916027U CN 201620839469 U CN201620839469 U CN 201620839469U CN 205916027 U CN205916027 U CN 205916027U
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- China
- Prior art keywords
- steering indicating
- indicating light
- fault diagnosis
- diagnosis circuit
- controlled switch
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Abstract
The utility model discloses a failure diagnosis circuit of vehicle and indicator, indicator including first termination ground, through the first power that the pull -up resistance and the second end of indicator are connected, the resistance of pull -up resistance is more than the resistance of indicator, hold the second source of being connected through controllable switch with the second of indicator, the automobile body control module of controllable switch disconnection is connected with controllable switch's control end, is controlled when controlling controllable switch closure, turning indicator control pass when the turning indicator control is opened, be connected with the second end of indicator, the turn signal lamp when the second is held to the high level among the control combination meter carries out first action, controls the MCU that turn signal lamp carries out the second action when the second is held to the low level. Whether the action of driver through turn signal lamp can audio -visually obtain the indicator and break down, and this circuit fully utilizes the existing device of resistance, controllable switch and vehicle, with low costs, the modularization with integrate competently, improved the stability of system.
Description
Technical field
This utility model is related to car lighting lamp control and detection technique field, more particularly to a kind of vehicle and steering indicating light
Fault diagnosis circuit.
Background technology
At present, vehicle the steering indicating light of vehicle is detected typically by flasher, the operation principle of flasher
It is: when driver's manipulation pole changer, flasher controls steering indicating light to press normal frequency flicker, and this flash signal can be transmitted simultaneously
To combination instrument, just whether driver judge steering indicating light by the frequency observing the side marker light flicker in combination instrument
Often.When steering indicating light be short-circuited or other fault and when disconnecting, the electric current that flasher can check control loop reduces, and judges to turn
Damage to lamp, flasher will export to combination instrument with faster frequency signal, and driver passes through to observe combination instrument transfer
Frequency to display lamp flicker to judge whether steering indicating light breaks down.But the high cost of flasher, and in order to coordinate flasher
Use, the design of vehicle circuitry becomes complicated, reduces the stability of Full Vehicle System.
Therefore, how to solve the problems, such as that above-mentioned shortcoming of the prior art is that those skilled in the art need to solve at present.
Utility model content
The purpose of this utility model is to provide a kind of fault diagnosis circuit of vehicle turn signal, and driver is indicated by steering
The action of lamp can intuitively obtain whether steering indicating light breaks down, and this circuit fully uses resistance, gate-controlled switch and car
Existing device, low cost, modularity and integrated level are high, improve the stability of system；Of the present utility model another
Purpose is to provide a kind of vehicle of the fault diagnosis circuit including above-mentioned vehicle turn signal.
For solving above-mentioned technical problem, this utility model provides a kind of fault diagnosis circuit of vehicle turn signal, comprising:
The steering indicating light of first end ground connection；
The first power supply being connected with the second end of described steering indicating light by pull-up resistor, wherein, the resistance of described pull-up resistor
Value is much larger than the resistance of described steering indicating light；
The second source being connected with the second end of described steering indicating light by gate-controlled switch；
It is connected with the control end of described gate-controlled switch, control described gate-controlled switch closure, described when turning indicator control is opened
Turning indicator control controls the car body control module that described gate-controlled switch disconnects when closing；
It is connected with the second end of described steering indicating light, control when described second end is for high level the steering in combination instrument to refer to
Show that lamp carries out the first action, controls the mcu that described side marker light carries out the second action when described second end is for low level.
Preferably, described gate-controlled switch is relay, wherein:
The normally opened contact of described relay is connected with the second end of described steering indicating light, and movable contact is with described second source even
Connect；
The coil of described relay is connected with described car body control module.
Preferably, described gate-controlled switch is audion, wherein:
The grid of described audion is connected with described car body control module, and the colelctor electrode of described audion is electric with described second
Source connects, and the transmitting collection of described audion is connected with the second end of described steering indicating light.
Preferably, this circuit also includes:
First end is connected with the second end of described steering indicating light, the filter capacitor of the second end ground connection.
Preferably, also include electric fuse between described second source and described gate-controlled switch.
Preferably, described first power supply is the first accumulator.
Preferably, described first accumulator is the accumulator of 24v for rated voltage.
Preferably, described second source is the second accumulator.
Preferably, described second accumulator is the accumulator of 24v for rated voltage.
For solving above-mentioned technical problem, this utility model additionally provides a kind of vehicle, including the car described in any of the above-described
The fault diagnosis circuit of steering indicating light.
This utility model provides the fault diagnosis circuit of a kind of vehicle and steering indicating light, including steering indicating light, the first power supply,
Two power supplys, car body control module and mcu.
If steering indicating light is normal, when turning indicator control is opened, car body control module controls gate-controlled switch closure, then steering indicating light
Second end is directly connected with second source, and the second end is now high level, and steering indicating light is bright and mcu controls side marker light to carry out the
One action；When turning indicator control is closed, car body control module controls gate-controlled switch to disconnect, then the second end of steering indicating light and the second electricity
Source disconnects, because the resistance of pull-up resistor is much larger than the resistance of steering indicating light, according to voltage divider principle, the second end is now low level,
Steering indicating light goes out and mcu controls side marker light to carry out the second action.If turning to lamp failure to disconnect, no matter gate-controlled switch disconnects also
It is closure, the second end of steering indicating light is high level, and therefore, mcu can control side marker light to carry out the first action always.
It can be seen that, the fault diagnosis circuit that this utility model provides, the action that driver passes through side marker light can be directly perceived
Obtain whether steering indicating light breaks down, and this circuit fully uses resistance, gate-controlled switch and the existing device of vehicle, cost
Low, modularity and integrated level are high, improve the stability of system.
Brief description
In order to be illustrated more clearly that the technical scheme in this utility model embodiment, below will be to prior art and embodiment
In required use accompanying drawing be briefly described it should be apparent that, drawings in the following description are only of the present utility model
Some embodiments, for those of ordinary skill in the art, on the premise of not paying creative work, can also be according to this
A little accompanying drawings obtain other accompanying drawings.
A kind of structural representation of the fault diagnosis circuit of vehicle turn signal that Fig. 1 provides for this utility model；
The structural representation of the fault diagnosis circuit of another kind of vehicle turn signal that Fig. 2 provides for this utility model.
Specific embodiment
Core of the present utility model is to provide a kind of fault diagnosis circuit of vehicle turn signal, and driver is indicated by steering
The action of lamp can intuitively obtain whether steering indicating light breaks down, and this circuit fully uses resistance, gate-controlled switch and car
Existing device, low cost, modularity and integrated level are high, improve the stability of system；Of the present utility model another
Core is to provide a kind of vehicle of the fault diagnosis circuit including above-mentioned vehicle turn signal.
Purpose, technical scheme and advantage for making this utility model embodiment are clearer, new below in conjunction with this practicality
Accompanying drawing in type embodiment, is clearly and completely described it is clear that being retouched to the technical scheme in this utility model embodiment
The embodiment stated is a part of embodiment of this utility model, rather than whole embodiments.Based on the enforcement in this utility model
Example, the every other embodiment that those of ordinary skill in the art are obtained under the premise of not making creative work, broadly fall into
The scope of this utility model protection.
Embodiment one
Refer to Fig. 1, a kind of structural representation of the fault diagnosis circuit of vehicle turn signal that Fig. 1 provides for this utility model
Figure, this fault diagnosis circuit includes:
The steering indicating light 1 of first end ground connection；
The first power supply 3 being connected with the second end of steering indicating light 1 by pull-up resistor 2, wherein, the resistance of pull-up resistor 2 is remote
Resistance more than steering indicating light 1；
The second source 5 being connected with the second end of steering indicating light 1 by gate-controlled switch 4；
It is understood that when gate-controlled switch 4 closes, second source 5 is directly connected with the second end of steering indicating light 1, when
When gate-controlled switch 4 disconnects, second source 5 is disconnected with the second end of steering indicating light 1.
Be connected with the control end of gate-controlled switch 4, when turning indicator control is opened control gate-controlled switch 4 close, turning indicator control
Control the car body control module 6 that gate-controlled switch 4 disconnects during pass；
It is understood that when driver opens turning indicator control, car body control module 6 controls gate-controlled switch 4 to close,
When driver turns off turning indicator control, car body control module 6 controls gate-controlled switch 4 to disconnect.
It is connected with the second end of steering indicating light 1, control when the second end is for high level the side marker light in combination instrument to enter
Row first action, side marker light is controlled to carry out the mcu7 (microcontroller of the second action when the second end is for low level
Unit, micro-control unit).
It is understood that the first action here can be bright, the second action can be for going out；Or first here moves
As the flicker being carried out with first frequency, the second action is to enter line flicker with second frequency；Or the first action here is
Bright, the second action is the flicker being carried out with certain frequency.Certainly, the first action here and the second action can also be other tools
The action of body, this utility model here is not particularly limited, and the first action is different with the second action.
This utility model provides a kind of fault diagnosis circuit of vehicle turn signal, including steering indicating light, the first power supply, second
Power supply, car body control module and mcu.
If steering indicating light is normal, when turning indicator control is opened, car body control module controls gate-controlled switch closure, then steering indicating light
Second end is directly connected with second source, and the second end is now high level, and steering indicating light is bright and mcu controls side marker light to carry out the
One action；When turning indicator control is closed, car body control module controls gate-controlled switch to disconnect, then the second end of steering indicating light and the second electricity
Source disconnects, because the resistance of pull-up resistor is much larger than the resistance of steering indicating light, according to voltage divider principle, the second end is now low level,
Steering indicating light goes out and mcu controls side marker light to carry out the second action.If turning to lamp failure to disconnect, no matter gate-controlled switch disconnects also
It is closure, the second end of steering indicating light is high level, and therefore, mcu can control side marker light to carry out the first action always.
It can be seen that, the fault diagnosis circuit that this utility model provides, the action that driver passes through side marker light can be directly perceived
Obtain whether steering indicating light breaks down, and this circuit fully uses resistance, gate-controlled switch and the existing device of vehicle, cost
Low, modularity and integrated level are high, improve the stability of system.
Embodiment two
Refer to Fig. 2, the structure of the fault diagnosis circuit of another kind of vehicle turn signal that Fig. 2 provides for this utility model is shown
It is intended to, this fault diagnosis circuit is on the basis of embodiment one:
Preferably, gate-controlled switch 4 is relay 41, wherein:
The normally opened contact of relay 41 is connected with the second end of steering indicating light 1, and movable contact is connected with second source 5；
The coil of relay 41 is connected with car body control module (body control module, bcm) 6.
It is understood that the input signal of relay 41 is the low and high level of car body control module 6 input, when input letter
Number for high level when, relay 41 adhesive be x, y conducting；When input signal is for low level, relay 41 disconnection is that x, z lead
Logical.
Preferably, gate-controlled switch 4 is audion, wherein:
The grid of audion is connected with car body control module 6, and the colelctor electrode of audion is connected with second source 5, audion
Transmitting collection be connected with the second end of steering indicating light 1.
It is understood that the input signal of audion is the low and high level of car body control module 6 input, work as input signal
During for high level, audion adhesive is x, y conducting；When input signal is for low level, audion disconnection is x, z conducting.
Preferably, this circuit also includes:
First end is connected with the second end of steering indicating light 1, the filter capacitor 8 of the second end ground connection.
It is understood that filter capacitor 8 here and pull-up resistor 2 constitute rc filter circuit.
Preferably, also include electric fuse 9 between second source 5 and gate-controlled switch 4.
Preferably, the first power supply 3 is the first accumulator 31.
Preferably, the first accumulator 31 is the accumulator of 24v for rated voltage.
Certainly, the accumulator that the first accumulator 31 here can also be other numerical value for rated voltage, according to actual feelings
Determining, this utility model here is not particularly limited condition.
Preferably, second source 5 is the second accumulator 51.
Preferably, the second accumulator 51 is the accumulator of 24v for rated voltage.
Certainly, the accumulator that the second accumulator 51 here can also be other numerical value for rated voltage, according to actual feelings
Determining, this utility model here is not particularly limited condition.
Then specifically, the operation principle for fault diagnosis circuit is it is assumed here that the first action for bright, the second action is
Go out, gate-controlled switch 4 to be described for relay 41:
Car body control module 6 is used for the primary signal of output control steering indicating light 1 light on and off, and high level represents control steering indicating light 1
Bright, low level represents that control steering indicating light 1 goes out.The effect of relay 41 is for being directly connected to steering indicating light 1, the input of relay 41
Signal is the low and high level of car body control module 6 output.
Assume steering indicating light 1 normal work, when input signal is low level, relay 41 disconnection is pin x, z turns on, by
It is much larger than the resistance of steering indicating light 1 in pull-up resistor 2 resistance, according to voltage divider principle, the voltage of steering indicating light 1 is 0 volt, at steering indicating light 1
In OFF state, the input signal that mcu 7 receives simultaneously is low level, and mcu 7, according to low level signal, makes in combination instrument
Side marker light is gone out.When input signal is for high level, relay 41 adhesive is pin x, and y turns on, and the voltage of steering indicating light 1 is 24
Volt, steering indicating light 1 is in bright state, and the input signal that mcu 7 receives simultaneously is high level, and mcu 7, according to high level signal, makes
Side marker light in combination instrument is bright.
Assume that steering indicating light 1 phenomenon that is short-circuited is that trailer steering indicating light 1 disconnects, as shown in Figure 2, when car body control module 6 is defeated
When going out low level and so that relay 41 is off, the input signal that mcu 7 receives is high level, and mcu 7 is according to high level
Signal, makes the side marker light in combination instrument bright.When car body control module 6 output high level makes relay 41 be in adhesive shape
During state, the input signal that mcu 7 receives is still high level, and meter lamp continues bright.
In sum, when operating turning indicator control, if trailer steering indicating light 1 is working properly, in instrument, trailer turns to and refers to
Show lamp also with the light on and off of steering indicating light 1 and light on and off；If trailer steering indicating light 1 is short-circuited during abnormal work, in instrument, trailer turns
To display lamp Chang Liang, thus can determine whether that steering indicating light 1 is damaged, reached the purpose of detection trailer steering indicating light 1 fault.
This utility model additionally provides a kind of vehicle, including the fault diagnosis electricity of the vehicle turn signal in above-described embodiment
Road.
Concrete introduction for the fault diagnosis circuit of the vehicle turn signal in vehicle refer to embodiment one and embodiment
Two, this utility model will not be described here.
In this specification, each embodiment is described by the way of going forward one by one, and what each embodiment stressed is and other
The difference of embodiment, between each embodiment identical similar portion mutually referring to.
Also, it should be noted in this manual, such as first and second or the like relational terms be used merely to by
One entity or operation are made a distinction with another entity or operation, and not necessarily require or imply these entities or operation
Between there is any this actual relation or order.And, term " inclusion ", "comprising" or its any other variant meaning
Covering comprising of nonexcludability, so that including a series of process of key elements, method, article or equipment not only include that
A little key elements, but also include other key elements being not expressly set out, or also include for this process, method, article or
The intrinsic key element of equipment.In the absence of more restrictions, the key element being limited by sentence "including a ...", does not arrange
Remove and also there is other identical element in the process including described key element, method, article or equipment.
Described above to the disclosed embodiments, makes professional and technical personnel in the field be capable of or new using this practicality
Type.Multiple modifications to these embodiments will be apparent from for those skilled in the art, is determined herein
The General Principle of justice can be realized in the case of without departing from spirit or scope of the present utility model in other embodiments.Cause
This, this utility model is not intended to be limited to the embodiments shown herein, and is to fit to and principles disclosed herein
The wide scope consistent with features of novelty.
Claims (10)
1. a kind of fault diagnosis circuit of vehicle turn signal is it is characterised in that include:
The steering indicating light of first end ground connection；
The first power supply being connected with the second end of described steering indicating light by pull-up resistor, wherein, the resistance of described pull-up resistor is remote
Resistance more than described steering indicating light；
The second source being connected with the second end of described steering indicating light by gate-controlled switch；
It is connected with the control end of described gate-controlled switch, control described gate-controlled switch closure, described steering when turning indicator control is opened
Lamp switch controls the car body control module that described gate-controlled switch disconnects when closing；
It is connected with the second end of described steering indicating light, control the side marker light in combination instrument when described second end is for high level
Carry out the first action, control the mcu that described side marker light carries out the second action when described second end is for low level.
2. fault diagnosis circuit as claimed in claim 1 is it is characterised in that described gate-controlled switch is relay, wherein:
The normally opened contact of described relay is connected with the second end of described steering indicating light, and movable contact is connected with described second source；
The coil of described relay is connected with described car body control module.
3. fault diagnosis circuit as claimed in claim 1 is it is characterised in that described gate-controlled switch is audion, wherein:
The grid of described audion is connected with described car body control module, and the colelctor electrode of described audion is with described second source even
Connect, the transmitting collection of described audion is connected with the second end of described steering indicating light.
4. fault diagnosis circuit as claimed in claim 2 is it is characterised in that this circuit also includes:
First end is connected with the second end of described steering indicating light, the filter capacitor of the second end ground connection.
5. fault diagnosis circuit as claimed in claim 4 is it is characterised in that between described second source and described gate-controlled switch
Also include electric fuse.
6. fault diagnosis circuit as claimed in claim 1 is it is characterised in that described first power supply is the first accumulator.
7. fault diagnosis circuit as claimed in claim 6 is it is characterised in that described first accumulator is 24v for rated voltage
Accumulator.
8. fault diagnosis circuit as claimed in claim 1 is it is characterised in that described second source is the second accumulator.
9. fault diagnosis circuit as claimed in claim 8 is it is characterised in that described second accumulator is 24v for rated voltage
Accumulator.
10. a kind of vehicle is it is characterised in that include the fault diagnosis of the vehicle turn signal as described in any one of claim 1-9
Circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620839469.9U CN205916027U (en) | 2016-08-04 | 2016-08-04 | Failure diagnosis circuit of vehicle and indicator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620839469.9U CN205916027U (en) | 2016-08-04 | 2016-08-04 | Failure diagnosis circuit of vehicle and indicator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205916027U true CN205916027U (en) | 2017-02-01 |
Family
ID=57870117
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620839469.9U Expired - Fee Related CN205916027U (en) | 2016-08-04 | 2016-08-04 | Failure diagnosis circuit of vehicle and indicator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205916027U (en) |
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 |
| CN110636664A (en) * | 2019-08-02 | 2019-12-31 | 惠州市德赛西威汽车电子股份有限公司 | Indicator lamp driving circuit with diagnosis function |
-
2016
- 2016-08-04 CN CN201620839469.9U patent/CN205916027U/en not_active Expired - Fee Related
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 |
| CN110636664A (en) * | 2019-08-02 | 2019-12-31 | 惠州市德赛西威汽车电子股份有限公司 | Indicator lamp driving circuit with diagnosis function |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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: 20170201 Termination date: 20210804 |