CN209589490U - Automobile arcing detection circuit - Google Patents
Automobile arcing detection circuit Download PDFInfo
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- CN209589490U CN209589490U CN201822077587.2U CN201822077587U CN209589490U CN 209589490 U CN209589490 U CN 209589490U CN 201822077587 U CN201822077587 U CN 201822077587U CN 209589490 U CN209589490 U CN 209589490U
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Abstract
The utility model discloses a kind of automobile arcing detection circuits, including low level generation circuit and high level output circuit, the low level generation circuit is connect with automobile storage battery power output end, for detecting the low level pulse signal generated when the sparking of automobile storage battery, and export low level signal corresponding with low level pulse signal；The high level output circuit is connect with the low level generation circuit, for generating high level output signal under the action of the low level signal.The automobile arcing detection circuit realizes quickly (in 1 second) high level signal output after automobile sparking, can fast wake-up to automobile computer.
Description
Technical field
The utility model relates to technical field of automotive electronics more particularly to a kind of automobile arcing detection circuits.
Background technique
The country is universal with automobile, and quick (in 1 second) awakening technology, increasingly heavier to automotive check after automobile sparking
It wants, the mechanism that majority judges automobile sparking requires long period (3 seconds or more), quickly detects wakeup of automotive computer informing and uses
Family is a kind of improvement of vehicle testing technique.
Utility model content
The utility model is intended to solve at least some of the technical problems in related technologies.For this purpose, this reality
It is to propose a kind of automobile arcing detection circuit with a novel purpose.
To achieve the above object, according to the automobile arcing detection circuit of the utility model embodiment, the automobile sparking inspection
Slowdown monitoring circuit includes:
Low level generation circuit, the low level generation circuit is connect with automobile storage battery power output end, for detecting vapour
The low level pulse signal generated when the sparking of automobile battery, and export low level signal corresponding with low level pulse signal；
High level output circuit, the high level output circuit are connect with the low level generation circuit, for described
High level output signal is generated under the action of low level signal.
Further, one embodiment according to the present utility model, the low level generation circuit include first capacitor C8,
First resistor R6, second resistance R7, first diode D15 and the first triode Q1；One end of the first capacitor C8 with it is described
The connection of automobile storage battery power output end, the other end of the first capacitor C8 is connect with one end of the first resistor R6, described
The other end of first resistor R6 is connect with the base stage of the first triode Q1, the transmitter of the first triode Q1 and reference
Ground connection, the collector of the first triode Q1 also pass through the output end of second resistance R7 and the first power supply (+3_3V)
Connection, the cathode of institute first diode D15 are connect with the other end of the first capacitor C8, the first diode D15
Anode with reference to connect.
Further, one embodiment according to the present utility model, the high level output circuit include the first MOS crystal
Pipe Q2, the source electrode of the first MOS transistor Q2 are connect with the output end of first power supply (+3_3V), and described first
The grid of MOS transistor Q2 is connect with the output end of the low level generation circuit, the drain electrode of the first MOS transistor Q2 with
External wakeup of automotive computer connection.
Further, one embodiment according to the present utility model, the high level output circuit further includes 3rd resistor
R8, one end of the 3rd resistor R8 are connect with the drain electrode of the first MOS transistor Q2, the other end of the 3rd resistor R8
With reference it connect.
Further, one embodiment according to the present utility model, the low level generation circuit further include the two or two pole
The connection that pipe D14, the first capacitor C8 pass through the second diode D14 and the first resistor R6, wherein described
The anode of two diode D14 is connect with the other end of the first capacitor C8, the cathode of the second diode D14 and institute
State described one end connection of first resistor R6.
Further, one embodiment according to the present utility model, the low level generation circuit further include the second capacitor
C7, one end of the second capacitor C7 are connect with the collector of the first triode Q1, the other end of the second capacitor C7
It is connect with the other end of the first capacitor C8.
The automobile arcing detection circuit that utility model embodiment provides detects automobile storage battery by low level generation circuit
The low level pulse signal generated when sparking, and export low level signal corresponding with low level pulse signal；And pass through height
Electrical level output circuit generates high level output signal under the action of the low level signal.It realizes (1 second quick after automobile is struck sparks
It is interior) high level signal output, it can fast wake-up to automobile computer.
Detailed description of the invention
Fig. 1 is that automobile provided by the embodiment of the utility model sparking quickly generates high-level block diagram；
Fig. 2 is automobile arcing detection circuit structural schematic diagram provided by the embodiment of the utility model.
Appended drawing reference:
Automobile storage battery 10；
Sparking generates high level circuit 20；
Low level generation circuit 201；
High level output circuit 202；
Vehicle electronics 30.
The embodiments will be further described with reference to the accompanying drawings for the realization, functional characteristics and advantage of the utility model aim.
Specific embodiment
In order to make those skilled in the art better understand the scheme of the utility model, below in conjunction with the utility model reality
The attached drawing in example is applied, the technical scheme in the utility model embodiment is clearly and completely described.Unless otherwise defined,
All technical and scientific terms used herein are generally understood with person skilled in the technical field of the present invention
Meaning it is identical.Terminology used in the description of the utility model herein is intended merely to description specific embodiment
Purpose, it is not intended that in limitation the utility model.
Referenced herein " embodiment " is it is meant that a particular feature, structure, or characteristic described can wrap in conjunction with the embodiments
It is contained at least one embodiment of the utility model., which there is the phrase, in each position in the description to be each meant
Identical embodiment, nor the independent or alternative embodiment with other embodiments mutual exclusion.Those skilled in the art are explicit
Ground and implicitly understand, embodiment described herein can be combined with other embodiments.
Refering to fig. 1 and Fig. 2, the utility model provide a kind of automobile arcing detection circuit, comprising: low level generation circuit
201 and high level output circuit 202, the low level generation circuit 201 connect, be used for 10 power output end of automobile storage battery
The low level pulse signal generated when the sparking of automobile storage battery 10 is detected, and exports low electricity corresponding with low level pulse signal
Ordinary mail number；Refering to fig. 1, when automobile is struck sparks, the battery voltage can be dragged down moment, and then increase, so that it is low to generate moment
Level pulse signal, the low level generation circuit 201 detect the low level pulse signal, and according to the low level pulse
Signal exports corresponding low level signal.
The high level output circuit 202 is connect with the low level generation circuit 201, in the low level signal
Under the action of generate high level output signal.The original state of the high level output circuit 202 is level state.When described low
When level generation circuit 201 exports low level, the high level output circuit 202 is generated and the low level generation circuit 201
Corresponding high level.
The automobile arcing detection circuit that utility model embodiment provides detects automobile electricity by low level generation circuit 201
The low level pulse signal generated when the sparking of bottle 10, and export low level signal corresponding with low level pulse signal；And
High level output signal is generated under the action of the low level signal by high level output circuit 202.Realize automobile sparking
Quickly (in 1 second) high level signal output afterwards, can fast wake-up to automobile computer.
Referring to Fig.2, the low level generation circuit 201 includes first capacitor C8, first resistor R6, second resistance R7, the
One diode D15 and the first triode Q1；One end of the first capacitor C8 is connect with 10 power output end of automobile storage battery,
The other end of the first capacitor C8 is connect with one end of the first resistor R6, the other end of the first resistor R6 with it is described
The base stage of first triode Q1 connects, and the transmitter of the first triode Q1 is connect with reference, the first triode Q1
Collector also pass through second resistance R7 and connect with the output end of the first power supply (+3_3V), the yin of institute first diode D15
Pole is connect with the other end of the first capacitor C8, and the anode of the first diode D15 is connect with reference.
Specifically, when the automobile storage battery 10 when automobile is struck sparks by voltage pull-down when, first capacitor C8 conducting,
The first capacitor C8 starts to discharge.After automobile sparking, 10 voltage of automobile storage battery is increased, and quickly recovers to
Level voltage originally, during this, the first capacitor C8 is connected and starts to charge again, and first capacitor C8 charging process makes
It obtains and is connected between the collector and emitter of the first triode Q1, the collector of the first triode Q1 exports low electricity
Flat, the low level is applied to the high level output circuit 202, so that the high level output circuit 202 generates output height
Level.
Referring to Fig.2, the high level output circuit 202 includes the first MOS transistor Q2, the first MOS transistor Q2
Source electrode connect with the output end of first power supply (+3_3V), the grid of the first MOS transistor Q2 with it is described
The output end of low level generation circuit 201 connects, and the drain electrode of the first MOS transistor Q2 and external wakeup of automotive computer connect
It connects.When the low level output circuit generates low level, the low level acts on the grid for including the first MOS transistor Q2
Pole, it is described to include first when the grid of the MOS transistor is low level since the MOS transistor is p channel transistor
MOS transistor Q2 conducting, the first MOS transistor Q2 export the voltage value of first power supply (+3_3V).
Referring to Fig.2, the high level output circuit 202 further includes 3rd resistor R8, one end of the 3rd resistor R8 with
The drain electrode of the first MOS transistor Q2 connects, and the other end of the 3rd resistor R8 is connect with reference.Pass through the third
Resistance R8 makes the drain electrode of the first MOS transistor Q2 be predetermined low level.It is described to be not provided in some other embodiment
When the 3rd resistor R8, the drain electrode of the first MOS transistor Q2 is high-impedance state.
Referring to Fig.2, the low level generation circuit 201 further includes that the second diode D14, the first capacitor C8 passes through institute
State the connection of the second diode D14 Yu the first resistor R6, wherein the anode and described first of the second diode D14
The other end of capacitor C8 connects, and the cathode of the second diode D14 and described one end of the first resistor R6 connect
It connects.The one-way conduction of the second diode D14, when so that the first capacitor C8 charging, the first triode Q1 is led
It is logical.
Referring to Fig.2, the low level generation circuit 201 further includes the second capacitor C7, one end of the second capacitor C7 with
The collector of the first triode Q1 connects, and the other end of the second capacitor C7 is described another with the first capacitor C8's
End connection.
The above is only the embodiments of the present invention, are not intended to limit the scope of the patents of the utility model, although referring to before
Embodiment is stated the utility model is described in detail, it, still can be right for coming for those skilled in the art
Technical solution documented by aforementioned each specific embodiment is modified, or carries out equivalent replace to part of technical characteristic
It changes.All equivalent structures done using the utility model specification and accompanying drawing content are directly or indirectly used in other correlations
Technical field, similarly within the utility model patent protection scope.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means specific features, structure, material or spy described in conjunction with this embodiment or example
Point is contained at least one embodiment or example of the utility model.In the present specification, to the schematic table of above-mentioned term
Stating may not refer to the same embodiment or example.Moreover, particular features, structures, materials, or characteristics described can be
It can be combined in any suitable manner in any one or more embodiment or examples.
Although the embodiments of the present invention have been shown and described above, it is to be understood that above-described embodiment is
Illustratively, it should not be understood as limiting the present invention, those skilled in the art are not departing from the utility model
Principle and objective in the case where above-described embodiment can be changed in the scope of the utility model, modify, replace and
Modification.
Claims (6)
1. a kind of automobile arcing detection circuit characterized by comprising
Low level generation circuit, the low level generation circuit are connect with automobile storage battery power output end, for detecting automobile electricity
The low level pulse signal generated when the sparking of bottle, and export low level signal corresponding with low level pulse signal；
High level output circuit, the high level output circuit are connect with the low level generation circuit, in the low electricity
High level output signal is generated under the action of ordinary mail number.
2. automobile arcing detection circuit according to claim 1, which is characterized in that the low level generation circuit includes the
One capacitor, first resistor, second resistance, first diode and the first triode；One end of the first capacitor and the automobile
The connection of battery power output end, the other end of the first capacitor are connect with one end of the first resistor, the first resistor
The other end connect with the base stage of first triode, the transmitter of first triode with reference to connect, described the
The collector of one triode also passes through second resistance and connect with the output end of the first power supply, the cathode of institute's first diode with
The other end of the first capacitor connects, and the anode of the first diode is connect with reference.
3. automobile arcing detection circuit according to claim 1, which is characterized in that the high level output circuit includes the
The source electrode of one MOS transistor, first MOS transistor is connect with the output end of the first power supply, the first MOS crystal
The grid of pipe is connect with the output end of the low level generation circuit, the drain electrode of first MOS transistor and external wake-up vapour
The connection of vehicle computer.
4. automobile arcing detection circuit according to claim 3, which is characterized in that the high level output circuit further includes
3rd resistor, one end of the 3rd resistor are connect with the drain electrode of first MOS transistor, the other end of the 3rd resistor
With reference it connect.
5. automobile arcing detection circuit according to claim 2, which is characterized in that the low level generation circuit further includes
Second diode, the connection that the first capacitor passes through second diode and the first resistor, wherein the described 2nd 2
The anode of pole pipe is connect with the other end of the first capacitor, cathode and the first resistor of second diode
One end connection.
6. automobile arcing detection circuit according to claim 2, which is characterized in that the low level generation circuit further includes
Second capacitor, one end of second capacitor are connect with the collector of first triode, the other end of second capacitor
It is connect with the other end of the first capacitor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822077587.2U CN209589490U (en) | 2018-12-11 | 2018-12-11 | Automobile arcing detection circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822077587.2U CN209589490U (en) | 2018-12-11 | 2018-12-11 | Automobile arcing detection circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209589490U true CN209589490U (en) | 2019-11-05 |
Family
ID=68349849
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822077587.2U Active CN209589490U (en) | 2018-12-11 | 2018-12-11 | Automobile arcing detection circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209589490U (en) |
-
2018
- 2018-12-11 CN CN201822077587.2U patent/CN209589490U/en active Active
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Effective date of registration: 20210603 Address after: 518000 1701-1708, 1801-1806, block D, building 1, Chuangzhi Yuncheng bid section 1, Liuxian Avenue, Xili community, Xili street, Nanshan District, Shenzhen City, Guangdong Province Patentee after: Shenzhen Yunjia Intelligent Technology Co.,Ltd. Address before: 518000 Yue Meilin Central Plaza, Kang Road, Futian District, Shenzhen City, Guangdong Province (North District), 2nd floor 204, 205, 206 Patentee before: SHENZHEN XTOOLTECH Co.,Ltd. |