CN208367144U - connection state diagnostic circuit and vehicle - Google Patents
connection state diagnostic circuit and vehicle Download PDFInfo
- Publication number
- CN208367144U CN208367144U CN201821139043.8U CN201821139043U CN208367144U CN 208367144 U CN208367144 U CN 208367144U CN 201821139043 U CN201821139043 U CN 201821139043U CN 208367144 U CN208367144 U CN 208367144U
- Authority
- CN
- China
- Prior art keywords
- triode
- interface
- circuit
- short
- power supply
- 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.)
- Active
Links
- 238000001514 detection method Methods 0.000 claims abstract description 64
- 239000003990 capacitor Substances 0.000 claims description 15
- 238000003745 diagnosis Methods 0.000 abstract description 11
- 238000006243 chemical reaction Methods 0.000 description 8
- 230000005611 electricity Effects 0.000 description 7
- 230000001681 protective effect Effects 0.000 description 7
- 238000010586 diagram Methods 0.000 description 5
- 230000003321 amplification Effects 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000003199 nucleic acid amplification method Methods 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004520 electroporation Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Abstract
The embodiments of the present invention disclose a kind of connection state diagnostic circuit, including first interface, second interface, open circuit detection module and short-circuit detecting module, wherein first interface is for connecting connector；Second interface is the power supply of active component through connector for connecting the first power supply, the first power supply；Detection module open a way between first interface and second interface, open circuit detection module is configured to only export high level in connector open circuit or only exports low level in connector open circuit；Short-circuit detecting module is connected with first interface, and short-circuit detecting module is configured to only export high level in connector short circuit or only exports low level in connector short circuit.The connection state diagnostic circuit that embodiment disclosed by the utility model provides uses the scheme of discrete component, can open circuit, normal connection and short circuit to connector carry out Accurate Diagnosis.
Description
Technical field
The utility model relates to electroporation fields, in particular to a kind of connection state diagnostic circuit and a kind of vehicle
?.
Background technique
GPS antenna is active antenna a bit on vehicle, for the PIN (Pin by connector external connection all on vehicle
Needle is used to complete a kind of metallics of the transmission of electricity or signal in connector) be likely to open circuit, short circuit etc. occur it is former
Hinder situation, such as maintenance personal can pull up active antenna in maintenance, and other equipment may be accessed on connector, this is
Internal circuit that is short-circuit and damaging vehicle may be caused due to misoperation.These failures diagnose in turn this
To remind user that there is currently these failures needs to repair in a little information feedbacks to vehicle device.Passive antenna is now on vehicle
Substantially it does not use, this is because can not be diagnosed to failure.
Active antenna needs external power supply to be powered, and substantially uses the power supply with diagnosis, and root in the related technology
The state that current antenna is in is judged according to the electric current on power supply line, and then state is fed back into vehicle device.
However, the higher cost needed using the power supply with diagnosis, the threshold value in addition diagnosed are not easy the rule according to antenna
Lattice are adjusted.
Utility model content
Embodiment disclosed by the utility model is aimed to solve the problem that the prior art or is needed in the related technology using the power supply with diagnosis
The higher cost wanted, and the threshold value diagnosed is not easy the problem of being adjusted according to the specification of antenna.
For this purpose, the first aspect of embodiment disclosed by the utility model proposes a kind of connection state diagnostic circuit.
The second aspect of embodiment disclosed by the utility model proposes a kind of vehicle.
In view of above-mentioned, according to embodiment disclosed by the utility model in a first aspect, providing a kind of connection state diagnostic
Circuit, including first interface, second interface, open circuit detection module and short-circuit detecting module, wherein first interface is for connecing
Plug-in unit；Second interface is the power supply of active component through connector for connecting the first power supply, the first power supply；Open circuit detection module position
Between first interface and second interface, open circuit detection module is configured to only export high level in connector open circuit or only connect
Plug-in unit exports low level when opening a way；Short-circuit detecting module is connected with first interface, and short-circuit detecting module is configured to only patching
High level is exported when part short circuit or only exports low level in connector short circuit.
The connection state diagnostic circuit that embodiment disclosed by the utility model provides uses the scheme of discrete component, setting
First interface and second interface as the interface being connected with connector and the first power supply, then first interface and second interface it
Between setting open circuit detection module and short-circuit detecting module, the level and other companies that open circuit detection module is exported when connector is opened a way
It connects different when state, different when the level that short-circuit detecting module is exported in connector short circuit is from other connection status therefore logical
Cross both detections output level can open circuit to connector, normal connection and short circuit carry out Accurate Diagnosis.In addition, according to not
Component parameter in the parameter request adjustment open circuit detection module and short-circuit detecting module of the active component of same specification, can be with
Diagnostic threshold, the i.e. judgment threshold of open circuit detection module and the level of short-circuit detecting module output are easily adjusted, is improved suitable
Ying Xing.
In addition, the connection state diagnostic circuit in the above-mentioned technical proposal that embodiment disclosed by the utility model provides, also
It can have following additional technical feature:
In the above-mentioned technical solutions, it is preferable that open circuit detection module is connected between first interface and second interface, is opened a way
It is the first output level that detection module, which is used to detect the output electric current of the first power supply and exports,.
In the above-mentioned technical solutions, further, open circuit detection module includes detection resistance, operational amplifier, the one or three
Pole pipe and the first output port, wherein detection resistance is connected between first interface and second interface；The input of operational amplifier
It is terminated at the both ends of detection resistance；First triode is NPN type triode, the base stage of the first triode and operational amplifier it is defeated
Outlet is connected, and the collector of the first triode is connected with second source, the emitter ground connection of the first triode；First output
Port is connected with the collector of the first triode, for exporting the first output level.
In the above-mentioned technical solutions, further, open circuit detection module further includes that setting is exported in second source and first
The first protective resistance between port.
In any of the above-described technical solution, it is preferable that the input terminal of short-circuit detecting module is connected with first interface, short circuit
Detection module is used to detect the input voltage of first interface and exports the second output level.
In the above-mentioned technical solutions, further, short-circuit detecting module includes the second triode and second output terminal mouth,
In, the second triode is PNP type triode, and the base stage of the second triode is connected with first interface, the current collection of the second triode
Pole ground connection, the emitter of the second triode are connected with third power supply, and the rated output voltage of third power supply is less than the first power supply
Rated output voltage；Second output terminal mouth is connected with the collector of the second triode, for exporting the second output level.
In the above-mentioned technical solutions, further, short-circuit detecting module further includes current-limiting resistance, the base stage of the second triode
First interface is connected to through current-limiting resistance.
In the above-mentioned technical solutions, further, current-limiting resistance includes concatenated first current-limiting resistance and the second current limliting electricity
Resistance；Short-circuit detecting module further includes the first decoupling capacitor and the second decoupling capacitor, first decoupling capacitor one end ground connection, another termination
In the centre of the first current-limiting resistance and the second current-limiting resistance；Second decoupling capacitor one end ground connection is another to be terminated at second output terminal
Mouthful.
In any of the above-described technical solution, further, short-circuit detecting module further includes low-level resistance, the second triode
Collector be grounded through low-level resistance.
According to the second aspect of embodiment disclosed by the utility model, a kind of vehicle, including active component are provided；It connects
Plug-in unit, for connecting active component；First power supply, the first power supply are the power supply of active component through connector；And such as above-mentioned
Connection state diagnostic circuit described in one technical solution.
In the above-mentioned technical solutions, further, vehicle further includes controller, first with connection state diagnostic circuit
Output port is connected with second output terminal mouth, and controller is used for the output electricity according to the first output port and second output terminal mouth
The flat connection status for judging connector.
In any of the above-described technical solution, it is preferable that active component is active antenna.
It will be provided in following description section according to the additional aspect and advantage of embodiment disclosed by the utility model, portion
Dividing will become apparent from the description below, or be recognized by the practice of the utility model.
Detailed description of the invention
The above-mentioned and/or additional aspect and advantage of embodiment disclosed by the utility model are from combination following accompanying drawings to implementation
It will be apparent and be readily appreciated that in the description of example, in which:
Fig. 1 shows the circuit diagram of the connection state diagnostic circuit of one embodiment according to the present utility model；
Fig. 2 shows the circuit diagrams of the connection state diagnostic circuit of another embodiment according to the present utility model；
Fig. 3 shows the circuit diagram of the open circuit detection module of another embodiment according to the present utility model；
Fig. 4 shows the circuit diagram of the open circuit detection module of further embodiment according to the present utility model；
Fig. 5 shows the circuit diagram of the short-circuit detecting module of another embodiment according to the present utility model.
Specific embodiment
In order to be more clearly understood that the above objects, features, and advantages of the utility model, with reference to the accompanying drawing and have
The utility model is further described in detail in body embodiment.It should be noted that in the absence of conflict, this Shen
The feature in embodiment and embodiment please can be combined with each other.
Many details are explained in the following description in order to fully understand the utility model, still, this is practical
Novel to be implemented using other than the one described here other modes, therefore, the protection scope of the utility model is simultaneously
It is not limited by the specific embodiments disclosed below.
Referring to Fig. 1 and Fig. 2 description the connection state diagnostic circuit according to the utility model some embodiments and
Vehicle.
As shown in Figure 1, the embodiment of the utility model first aspect provides a kind of connection state diagnostic circuit, including
One interface 10, second interface 20, open circuit detection module 30 and short-circuit detecting module 40, wherein first interface 10 is for being connected with
The connector ACC_ANT_POWER of source component；Second interface 20 is active component for connecting the first power supply, the first power supply
Power supply；Detection module 30 open a way between first interface 10 and second interface 20, open circuit detection module 30 is configured to only having
High level is exported when source component is opened a way or only exports low level when active component is opened a way；Short-circuit detecting module 40 and first
Interface 10 is connected, and short-circuit detecting module 40 is configured to only export high level in active component short circuit or only in active first device
Low level is exported when part short circuit.
The connection state diagnostic circuit that embodiment disclosed by the utility model provides uses the scheme of discrete component, setting
First interface 10 and second interface 20 are as the interface being connected with active component and the first power supply, then in 10 He of first interface
Setting open circuit detection module 30 and short-circuit detecting module 40 between second interface 20, open circuit detection module 30 are opened in active component
Level different when the level exported when road is from other connection status, that short-circuit detecting module 40 is exported in active component short circuit
It is different when from other connection status, thus by the level of both detections output can open circuit to active component, normally connect
It connects and short circuit carries out Accurate Diagnosis, specifically, not opening a way when open circuit detection module 30 detects, short-circuit detecting module 40 is detected
To when not short circuit, then show that connector ACC_ANT_POWER is in normal connection status.In addition, according to the active of different size
Component parameter in the parameter request adjustment open circuit detection module 30 and short-circuit detecting module 40 of component, is adjusted in which can be convenient
The judgment threshold for the level that whole diagnostic threshold, i.e. open circuit detection module 30 and short-circuit detecting module 40 export, improves adaptability.
As shown in Figure 1, in one embodiment of the utility model, it is preferable that open circuit detection module 30 is connected on first
Between interface 10 and second interface 20, open circuit detection module 30 is used to detect the output electric current of the first power supply and exports the first output
Level.
In this embodiment, specifically define that open circuit detection module 30 is connected between first interface 10 and second interface 20
To detect the output electric current of power supply (i.e. the first power supply), output electric current is theoretically 0 when due to open circuit, other connection status
Lower electric current be then normal value even it is larger, therefore by detection supply current output state, that is, diagnosable active component whether
Open circuit.Specifically, whether detection output electric current is less than current threshold.
As shown in Fig. 2, further, open circuit detection module 30 includes detection in one embodiment of the utility model
Resistance R_sensor, operational amplifier, the first triode Q1 and the first output port ANT_Connect_DET, wherein detection electricity
Resistance R_sensor is connected between first interface 10 and second interface 20；The input of operational amplifier is terminated at detection resistance R_
The both ends of sensor；First triode Q1 is NPN type triode, the output of the base stage b1 and operational amplifier of the first triode Q1
End is connected, and the collector c1 of the first triode Q1 is connected with second source, and the emitter e 1 of the first triode Q1 is grounded；The
One output port ANT_Connect_DET is connected with the collector c1 of the first triode Q1, for exporting the first output level.
In this embodiment, open circuit detection module 30 is specifically defined.It is gone here and there between first interface 10 and second interface 20
Joint inspection measuring resistance R_sensor, then the voltage at the both ends detection resistance R_sensor can reflect the output electric current of the first power supply, lead to
The voltage value that the both ends resistance R_sensor can be will test by crossing operational amplifier in parallel is converted into another voltage value, and inputs NPN
The collector c1 and emitter e 1 of the base stage b1, the first triode Q1 of first triode Q1 of type then connect second source respectively and connect
Ground, when connector ACC_ANT_POWER open circuit, the output electric current of the first power supply is extremely low, the both ends detection resistance R_sensor
Voltage decreases, and the pressure difference between the base stage b1 and emitter e 1 of the first triode Q1 is enabled to be less than conducting voltage (specially
0.7V), then the first triode Q1 is disconnected, the current collection due to the first output port ANT_Connect_DET through the first triode Q1
Pole c1 is connected to second source, so the first output level is high level, and under other connection status, current value is relatively
Greatly, so that the first triode Q1 because the pressure difference between base stage b1 and emitter e 1 be greater than conducting voltage due to be connected, then collector c1 with
Emitter e 1 is connected to and is grounded, so that the first output level is low level, so that the first output port ANT_Connect_
DET only exports high level when connector ACC_ANT_POWER opens a way, and the open circuit for realizing connector ACC_ANT_POWER is examined
It is disconnected.Further, since the resistance value of detection resistance R_sensor and the amplification factor of operational amplifier will affect the first triode Q1
Base stage b1 on voltage, therefore can be gone by the resistance value and the amplification factor of operational amplifier for changing detection resistance R_sensor
Adapt to the parameter request of the active component of different size.Specifically, operational amplifier is differential operational amplifier.
Further, as the above analysis, the first triode Q1 has the function of switching levels, is low at base stage b1
It is high level at collector c1 when level, when being high level at base stage b1, is low level at collector c1, therefore, such as schemes
Shown in 3, by reconnecting one between the collector c1 of the first triode Q1 and the first output port ANT_Connect_DET
Conversion triode Q3 identical with the first triode Q1 structure converts the current collection of the base stage b3 and the first triode Q1 of triode Q3
Pole c1 is connected, and the collector c3 of conversion triode Q3 is connected with the first output port ANT_Connect_DET, and connects one
The emitter e 3 of a high level element, the 4th power supply such as identical with second source, conversion triode Q3 is grounded, and can patched
Part ACC_ANT_POWER exports low level when opening a way, and exports high level under other connection status.
As shown in figure 4, open circuit detection module 30 includes detection resistance R_ in another embodiment of the utility model
Sensor, operational amplifier, the first triode Q1, resistance R5 and the first output port ANT_Connect_DET, wherein detection
Resistance R_sensor is connected between first interface 10 and second interface 20；The input of operational amplifier is terminated at detection resistance R_
The both ends of sensor；First triode Q1 is NPN type triode, the output of the base stage b1 and operational amplifier of the first triode Q1
End is connected, and the collector c1 of the first triode Q1 is connected with second source, and the emitter e 1 of the first triode Q1 is through resistance
R5 ground connection；First output port ANT_Connect_DET is connected with the emitter e 1 of the first triode Q1, for exporting first
Output level.
In this embodiment, by it is shown in Fig. 2 open circuit detection module 30 the first output port ANT_Connect_DET from
The collector c1 of first triode Q1 is transferred to emitter e 1, and is connected with the first output port ANT_Connect_DET
Ground wire on increase a resistance R5.The working principle of detection resistance R_sensor and operational amplifier and previous embodiment phase
Together, when connector ACC_ANT_POWER opens a way, the output electric current of the first power supply is extremely low, the both ends detection resistance R_sensor
Voltage decreases, and the pressure difference between the base stage b1 and emitter e 1 of the first triode Q1 is enabled to be less than conducting voltage (specially
0.7V), then the first triode Q1 is disconnected, and is grounded due to the first output port ANT_Connect_DET and the first triode Q1
Emitter e 1 is connected, so the first output level is low level, and under other connection status, current value is relatively large, so that
First triode Q1 because the pressure difference between base stage b1 and emitter e 1 be greater than conducting voltage due to be connected, then emitter e 1 because with collector
C1 is connected to and is connected with second source, while collector c1 ground connection side is connected with resistance R5, then second source is resistance R5 power supply,
On the one hand making the first output level is high level, on the other hand protects second source that shorted to earth does not occur, so that the
One output port ANT_Connect_DET only exports low level when connector ACC_ANT_POWER opens a way, and realizes connector
The open circuit of ACC_ANT_POWER diagnoses.It is envisioned that can also the first triode Q1 in the present embodiment 1 He of emitter e
An aforementioned conversion triode Q3 is connected between first output port ANT_Connect_DET, converts the base of triode Q3 at this time
Pole b3 is connected with the emitter e 1 of the first triode Q1, converts the collector c3 and the first output port ANT_ of triode Q3
Connect_DET is connected, and connects a high level element, and the 5th power supply such as identical with second source converts triode
The emitter e 3 of Q3 is grounded, and can export high level when connector ACC_ANT_POWER opens a way, defeated under other connection status
Low level out.
As shown in Fig. 2, further, open circuit detection module 30 further includes setting in one embodiment of the utility model
Set the first protective resistance R1 between second source and the first output port ANT_Connect_DET.
In this embodiment, by being arranged first between second source and the first output port ANT_Connect_DET
Protective resistance R1, it can be ensured that when connector ACC_ANT_POWER is normally connected or is short-circuit, i.e. when the first triode Q1 is connected,
Shorted to earth does not occur for second source, and second source is protected not damage.Similarly, as shown in figure 3, it is defeated in the 4th power supply and first
It is also provided with a second protective resistance R6 between exit port ANT_Connect_DET, acts on identical as the first protective resistance R1.
Protective resistance equally can be set between the 5th power supply and the first output port ANT_Connect_DET.
As shown in Figure 1, in one embodiment of the utility model, it is preferable that the input terminal of short-circuit detecting module 40 with
First interface 10 is connected, and short-circuit detecting module 40 is used to detect the input voltage of first interface 10 and exports the second output electricity
It is flat.
In this embodiment, specifically define that short-circuit detecting module 40 is connected with first interface 10 to detect power supply
(i.e. the first power supply) is the input voltage that first interface 10 provides, due to being equivalent to when short circuit in connector ACC_ANT_POWER
Locate a very small resistance of parallel connection, increases electric current, the input electricity in the case where output power is constant, at first interface 10
Pressure is greatly reduced, and under other connection status is then voltage rating, therefore passes through detection input voltage, that is, diagnosable connector
Whether ACC_ANT_POWER is short-circuit.Specifically, whether detection input voltage is less than voltage threshold.
As shown in Fig. 2, further, short-circuit detecting module 40 includes second in one embodiment of the utility model
Triode Q2 and second output terminal mouth ANT_Short_DET, wherein the second triode Q2 is PNP type triode, the second triode
The base stage b2 of Q2 is connected with first interface 10, the collector c2 ground connection of the second triode Q2, the emitter of the second triode Q2
E2 is connected with third power supply, the rated output voltage of the rated output voltage of third power supply less than the first power supply；Second output
Port ANT_Short_DET is connected with the collector c2 of the second triode Q2, for exporting the second output level.
In this embodiment, short-circuit detecting module 40 is specifically defined.The base stage b2 of second triode Q2 of positive-negative-positive and
One interface 10 is connected, so that the voltage of base stage b2 is related to the input voltage at first interface 10, the collection of the second triode Q2
Electrode c2 and emitter e 2 are grounded and connect respectively third power supply, and the rated output voltage of third power supply is smaller than the first power supply, when
When connector ACC_ANT_POWER short circuit, the input voltage at first interface 10 is extremely low, enables the second triode Q2 because of emitter e 2
Pressure difference between base stage b2 is greater than conducting voltage and is connected, and the collector c2 of the second triode Q2 with emitter e 2 because being connected at this time
And it is in high level, the second output level of the second output terminal mouth ANT_Short_DET output being attached thereto also is high level,
And the input voltage under other connection status at first interface 10 is the rated output voltage of the first power supply, is greater than and emitter
E2 connected third power supply, therefore the second triode Q2 is disconnected, the collector that second output terminal mouth ANT_Short_DET is connected
C2 keeps ground connection, and the second output level is then low level, so that second output terminal mouth ANT_Short_DET is only in connector
High level is exported when ACC_ANT_POWER short circuit, realizes the short circuit diagnosis of connector ACC_ANT_POWER.
Specifically, the present embodiment and the above-mentioned open circuit for including the first triode Q1 and not including conversion triode are detected into mould
Block 30 combines, then in combination with the first output level and second output terminal mouth of the first output port ANT_Connect_DET
The connection status of the second output level Accurate Diagnosis connector ACC_ANT_POWER of ANT_Short_DET, the logic of diagnosis is such as
Shown in table 1:
1 diagnostic logic table of table
The connection status of connector ACC_ANT_POWER can be diagnosed by the logic of upper table, specifically, when the
When one output level is high level, the second output level is low level, diagnostic result is open circuit；When the first output level and second
When output level is low level, diagnostic result is normal connection；When the first output level is low level, the second output level is
When high level, diagnostic result is short circuit.
Further, as shown in figure 5, the second triode Q2 collector c2 and second output terminal mouth ANT_Short_
An aforementioned conversion triode Q3 is connected between DET, converts the collector c2 of the base stage b3 and the second triode Q2 of triode Q3
It is connected, the collector c3 of conversion triode Q3 is connected with second output terminal mouth ANT_Short_DET, and connects one high electricity
The emitter e 3 of flat elements, the 6th power supply such as identical with second source, conversion triode Q3 is grounded, can be in connector ACC_
Low level is exported when ANT_POWER short circuit, exports high level under other connection status.It is envisioned that with the first protection
Resistance R1 is similar, and a third protective resistance can also be arranged between the 6th power supply and second output terminal mouth ANT_Short_DET
R7。
As shown in Fig. 2, further, short-circuit detecting module 40 further includes limit in one embodiment of the utility model
The base stage b2 of leakage resistance, the second triode Q2 is connected to first interface 10 through current-limiting resistance.
In this embodiment, by the way that current-limiting resistance is arranged between the base stage b2 and first interface 10 of the second triode Q2,
The electric current on the base stage b2 of the second triode Q2 can be reduced, the second triode Q2 of protection is not damaged.
As shown in Fig. 2, further, current-limiting resistance includes concatenated first in one embodiment of the utility model
Current-limiting resistance R2 and the second current-limiting resistance R3；Short-circuit detecting module 40 further includes the first decoupling capacitor C1 and the second decoupling capacitor
C2, first one end decoupling capacitor C1 ground connection, another centre for being terminated at the first current-limiting resistance R2 and the second current-limiting resistance R3；Second
The one end decoupling capacitor C2 ground connection is another to be terminated at second output terminal mouth ANT_Short_DET.
In this embodiment, pass through first of the intermediate connection ground connection in the first current-limiting resistance R2 and the second current-limiting resistance R3
Decoupling capacitor C1 connects the second decoupling capacitor C2 of ground connection on second output terminal mouth ANT_Short_DET, can be the two or three pole
Pipe Q2 and second output terminal mouth ANT_Short_DET decoupling filtering, reduces noise, improves the accuracy of detection.It is contemplated that
Be, when using embodiment as shown in Figure 5, the second triode Q2 collector c2 and third transistor Q3 base stage b3 it
Between be arranged third current-limiting resistance R8 and the 4th current-limiting resistance R9, short-circuit detecting module 40 remove include the first decoupling capacitor C1 and second
It further include third decoupling capacitor C3 outside decoupling capacitor C2, one end ground connection is another to be terminated at the limit of third current-limiting resistance R8 and the 4th
Between leakage resistance R9.
As shown in Fig. 2, further, short-circuit detecting module 40 further includes low in one embodiment of the utility model
Level resistance R4, the collector c2 of the second triode Q2 are grounded through low-level resistance R4.
It in this embodiment, can by the way that low-level resistance R4 is arranged on the ground wire of the collector c2 of the second triode Q2
Ensure that collector c2 is in when that is, the second triode Q2 is not turned on when connector ACC_ANT_POWER is normally connected or opened a way
Stable low level, and in connector ACC_ANT_POWER short circuit, i.e. collector c2 can switch to when the second triode Q2 is connected
High level keeps measurement result accurate.
The embodiment of the utility model second aspect provides a kind of vehicle, comprising: active component；First power supply, the
One power supply is the power supply of active component；And the connection state diagnostic circuit as described in above-mentioned any embodiment.
The vehicle that embodiment disclosed by the utility model provides, including connection state diagnostic described in any of the above-described embodiment
Circuit, thus have whole technical effects of the connection state diagnostic circuit, details are not described herein.Specifically, connector ACC_
ANT_POWER is Fakra connector.Vehicle power supply usually has tri- kinds of 3.3V, 5V, 8V, when using circuit design as shown in Figure 2
When, as long as ensuring that the rated output voltage of the first power supply is greater than third power supply, such as the first power supply is the power supply of 5V
5V_ANT, third power supply are the Switching Power Supply 3V3_SW of 3.3V, and second source, the 4th power supply, the 5th power supply, the 6th power supply are unlimited
It is fixed, the Switching Power Supply 3V3_SW of 3.3V can also be used.
In one embodiment of the utility model, further, vehicle further includes controller, with connection state diagnostic
First output port ANT_Connect_DET of circuit is connected with second output terminal mouth ANT_Short_DET, and controller is used for
Judged according to the output level of the first output port ANT_Connect_DET and second output terminal mouth ANT_Short_DET active
The state of component.
In this embodiment, further defining vehicle further includes controller, for detecting connection state diagnostic circuit
Two output levels, and then Accurate Diagnosis goes out the connection status of active component for open circuit, normal connection or short circuit.
Further, also settable warning device or electric control gear are to receive the diagnostic result of controller and then execute corresponding
Operation such as issues alarm, prompt information when diagnostic result is open circuit, or disconnects active component when diagnostic result is short circuit
With protection power source.
In one embodiment of the utility model, it is preferable that active component is active antenna.
In this embodiment, it specifically defines that active component is active antenna, and then realizes the connection shape of active antenna
State diagnosis.
In the description of this specification, the orientation or positional relationship of the instructions such as term " on ", "lower" is based on shown in attached drawing
Orientation or positional relationship, be merely for convenience of describing embodiment disclosed by the utility model and simplify description, rather than indicate
Or imply that signified device or element must have a particular orientation, be constructed and operated in a specific orientation, therefore cannot understand
For limitations of the present invention；Term " multiple " then refers to two or more, unless otherwise restricted clearly；Term is " even
Connect ", " installation ", " fixation " etc. shall be understood in a broad sense, for example, " connection " may be a fixed connection, be also possible to detachably connect
It connects, or is integrally connected；It can be directly connected, it can also be indirectly connected through an intermediary.For the common skill of this field
For art personnel, concrete meaning of the above-mentioned term in embodiment disclosed by the utility model can be understood as the case may be.
In the description of this specification, the description of term " one embodiment ", " some embodiments ", " specific embodiment " etc.
Mean particular features, structures, materials, or characteristics described in conjunction with this embodiment or example be contained in it is disclosed by the utility model extremely
In few one embodiment or example.In the present specification, schematic expression of the above terms are not necessarily referring to identical reality
Apply example or example.Moreover, the particular features, structures, materials, or characteristics of description can in any one or more embodiments or
It can be combined in any suitable manner in example.
The above descriptions are merely preferred embodiments of the present invention, is not intended to limit the utility model, for this
For the technical staff in field, embodiment disclosed by the utility model can have various modifications and variations.It is all in the utility model
Spirit and principle within, any modification, equivalent replacement, improvement and so on should be included in the protection model of the utility model
Within enclosing.
Claims (12)
1. a kind of connection state diagnostic circuit characterized by comprising
First interface, for connecting connector；
Second interface, for connecting the first power supply, first power supply is the power supply of active component through the connector；
Open circuit detection module, between the first interface and the second interface, the open circuit detection module is configured to only
High level is exported in connector open circuit or only exports low level when the connector is opened a way；And
Short-circuit detecting module is connected with the first interface, and the short-circuit detecting module is configured to only in the connector
High level is exported when short-circuit or only exports low level in the connector short circuit.
2. connection state diagnostic circuit according to claim 1, which is characterized in that
The open circuit detection module is connected between the first interface and the second interface, and the open circuit detection module is used for
It detects the output electric current of first power supply and exports the first output level.
3. connection state diagnostic circuit according to claim 2, which is characterized in that the open circuit detection module includes:
Detection resistance, the detection resistance are connected between the first interface and the second interface；
Operational amplifier, the input of the operational amplifier are terminated at the both ends of the detection resistance；
First triode is NPN type triode, the base stage and the output end phase of the operational amplifier of first triode
Connection, the collector of first triode are connected with second source, the emitter ground connection of first triode；
First output port is connected with the collector of first triode, for exporting first output level.
4. connection state diagnostic circuit according to claim 3, which is characterized in that
The open circuit detection module further includes the first protection being arranged between the second source and first output port
Resistance.
5. connection state diagnostic circuit according to any one of claim 1 to 4, which is characterized in that
The input terminal of the short-circuit detecting module is connected with the first interface, and the short-circuit detecting module is described for detecting
The input voltage of first interface simultaneously exports the second output level.
6. connection state diagnostic circuit according to claim 5, which is characterized in that the short-circuit detecting module includes:
Second triode is PNP type triode, and the base stage of second triode is connected with the first interface, described
The emitter of the grounded collector of second triode, second triode is connected with third power supply, the third power supply
Rated output voltage is less than the rated output voltage of first power supply；
Second output terminal mouth is connected with the collector of second triode, for exporting second output level.
7. connection state diagnostic circuit according to claim 6, which is characterized in that the short-circuit detecting module further include:
The base stage of current-limiting resistance, second triode is connected to the first interface through the current-limiting resistance.
8. connection state diagnostic circuit according to claim 7, which is characterized in that
The current-limiting resistance includes concatenated first current-limiting resistance and the second current-limiting resistance；
The short-circuit detecting module further include:
First decoupling capacitor, one end ground connection are another to be terminated in first current-limiting resistance and second current-limiting resistance
Between；
Second decoupling capacitor, one end ground connection are another to be terminated at the second output terminal mouth.
9. the connection state diagnostic circuit according to any one of claim 6 to 8, which is characterized in that the short-circuit detecting
Module further include:
The collector of low-level resistance, second triode is grounded through the low-level resistance.
10. a kind of vehicle characterized by comprising
Active component；
Connector, for connecting the active component；
First power supply, first power supply are that the active component is powered through the connector；And
Connection state diagnostic circuit as claimed in any one of claims 1-9 wherein.
11. vehicle according to claim 10, which is characterized in that the vehicle further include:
Controller is connected with the first output port of the connection state diagnostic circuit and second output terminal mouth, the control
Device processed is used to judge according to the output level of first output port and the second output terminal mouth connection of the connector
State.
12. vehicle described in 0 or 11 according to claim 1, which is characterized in that
The active component is active antenna.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821139043.8U CN208367144U (en) | 2018-07-18 | 2018-07-18 | connection state diagnostic circuit and vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821139043.8U CN208367144U (en) | 2018-07-18 | 2018-07-18 | connection state diagnostic circuit and vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208367144U true CN208367144U (en) | 2019-01-11 |
Family
ID=64925732
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821139043.8U Active CN208367144U (en) | 2018-07-18 | 2018-07-18 | connection state diagnostic circuit and vehicle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208367144U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111398852A (en) * | 2020-03-31 | 2020-07-10 | 厦门科灿信息技术有限公司 | Power output short circuit detection circuit and electronic equipment |
| CN111693899A (en) * | 2020-05-31 | 2020-09-22 | 东风电驱动系统有限公司 | Device and method for rapidly detecting antenna extension line of car networking terminal |
| CN112798988A (en) * | 2019-10-24 | 2021-05-14 | 北京小米移动软件有限公司 | Detection circuit, detection method and device, and electronic device |
| TWI782339B (en) * | 2020-07-22 | 2022-11-01 | 美商輝達公司 | Testing system and method for in chip decoupling capacitor circuits |
-
2018
- 2018-07-18 CN CN201821139043.8U patent/CN208367144U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112798988A (en) * | 2019-10-24 | 2021-05-14 | 北京小米移动软件有限公司 | Detection circuit, detection method and device, and electronic device |
| CN111398852A (en) * | 2020-03-31 | 2020-07-10 | 厦门科灿信息技术有限公司 | Power output short circuit detection circuit and electronic equipment |
| CN111693899A (en) * | 2020-05-31 | 2020-09-22 | 东风电驱动系统有限公司 | Device and method for rapidly detecting antenna extension line of car networking terminal |
| TWI782339B (en) * | 2020-07-22 | 2022-11-01 | 美商輝達公司 | Testing system and method for in chip decoupling capacitor circuits |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN208367144U (en) | connection state diagnostic circuit and vehicle | |
| CN108896861A (en) | A kind of detection circuit and electric car in high-voltage interlocking circuit | |
| CN203673003U (en) | Multi-core cable automatic tester | |
| CN102346478B (en) | Circuit and method for detecting failures in data acquisition of overall controller of automobile | |
| CN207232324U (en) | A kind of fault diagnosis circuit of low side driving | |
| CN201528224U (en) | High-tension line electrified detecting and locking device | |
| CN109283424B (en) | Testing device and method for four-port sensor signal deconcentrator with LED | |
| CN105572517B (en) | A kind of arrester on-line monitoring Intelligent live access protective device and control method | |
| CN114124071A (en) | Open circuit detection method, circuit, device, electronic equipment and storage medium | |
| CN106872845A (en) | A kind of test equipment adapter connecting detection method | |
| CN205981495U (en) | Quick detection device of thermocouple | |
| CN201037857Y (en) | Device for testing output current of charger | |
| CN109856498A (en) | Battery harness detection circuit and detection method | |
| CN205829654U (en) | Power equipment communication test instrument | |
| CN209640434U (en) | A kind of equipment for the vehicle-mounted school VOBC line | |
| CN110702962B (en) | Universal meter pen of digital multimeter with anti-error measurement function | |
| CN110286317B (en) | Diagnostic circuit and method of battery system | |
| CN2927068Y (en) | RS232 series wire inspector | |
| CN209560010U (en) | A kind of open circuit detection system | |
| CN208255712U (en) | Hand-held type automobile diagnostic equipment based on CAN-BUS bus communication protocol | |
| CN208255713U (en) | The hand-held type automobile diagnostic equipment of KWP2000 communication protocol based on K line | |
| CN202230151U (en) | Intelligent gear shifter detection device | |
| CN212255499U (en) | Integrated power distribution automation terminal signal and control test system | |
| CN212378800U (en) | Welding signal acquisition and conversion device | |
| CN214728610U (en) | Vehicle CAN signal reading connection system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20211130 Address after: Room 103, building 1, yard 4, Hengxing Road, Gaoliying Town, Shunyi District, Beijing Patentee after: Beijing Rockwell Technology Co.,Ltd. Address before: Room 801, 8 / F, building 3, No.10 courtyard, Wangjing street, Chaoyang District, Beijing 100102 Patentee before: BEIJING CHJ AUTOMOTIVE TECHNOLOGY Co.,Ltd. |
|
| TR01 | Transfer of patent right |