CN206528426U - Automotive ignition status identification means - Google Patents
Automotive ignition status identification means Download PDFInfo
- Publication number
- CN206528426U CN206528426U CN201720097983.4U CN201720097983U CN206528426U CN 206528426 U CN206528426 U CN 206528426U CN 201720097983 U CN201720097983 U CN 201720097983U CN 206528426 U CN206528426 U CN 206528426U
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- CN
- China
- Prior art keywords
- pins
- control chip
- conversion circuit
- resistance
- identification means
- 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.)
- Expired - Fee Related
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Abstract
The utility model discloses a kind of automotive ignition status identification means, including the voltage conversion circuit and level-conversion circuit being electrically connected to each other, the voltage conversion circuit electrically connects with the battery voltage of automobile and is used to the variable quantity of battery voltage being converted to high level output, and the level-conversion circuit electrically connects with the mobile unit of automobile and is used to be overturn high level and low level.Using the utility model, the fired state of automobile can be recognized according to the variable quantity of automobile storage battery voltage, circuit is simple, and power consumption is low, strong adaptability.
Description
Technical field
The utility model is related to mobile unit technical field, more particularly to a kind of automotive ignition status identification means.
Background technology
At present, vehicle-mounted electronic equipment will read the fired state of automobile and generally comprise following two modes：
One is by special ECU（Electronic Control Unit）The vehicle-mounted OBD of decoding chip（On-Board
Diagnostic onboard diagnostic systems）To read the fired state of automobile, but which cost is higher, simultaneously as automobile
Battery voltage be to have output always, if vehicle-mounted OBD works always, power consumption can be compared.
Two be by G_Sensor（Gravity-sensor gravity sensors）Recognize the vibrations of automobile to realize, which
Although power saving, shock momentum differs when being due to different automobile sparkings, so making easily occur maloperation in this way.
The content of the invention
Technical problem to be solved in the utility model is that there is provided a kind of automobile that circuit is simple, power consumption is extremely low point
Fiery status identification means, can recognize the fired state of automobile according to the variable quantity of automobile storage battery voltage.
In order to solve the above-mentioned technical problem, the utility model provides a kind of automotive ignition status identification means, including phase
The voltage conversion circuit and level-conversion circuit mutually electrically connected, the voltage conversion circuit is electrically connected simultaneously with the battery voltage of automobile
For the variable quantity of battery voltage to be converted into high level output, the level-conversion circuit is electrically connected with the mobile unit of automobile
And for high level and low level to be overturn.
As the improvement of such scheme, the level-conversion circuit includes NPN type triode, the 4th resistance, the 5th resistance
And the 6th resistance, the base stage of the NPN type triode electrically connects with the 4th resistance, the colelctor electrode difference of the NPN type triode
Electrically connected with the 5th resistance and the 6th resistance, the grounded emitter of the NPN type triode.
As the improvement of such scheme, the voltage conversion circuit includes the first electric capacity, first resistor and control chip, institute
Battery voltage is stated to electrically connect with control chip by the first electric capacity and first resistor.
As the improvement of such scheme, the control chip is dual operational amplifier or single channel operational amplifier.
As the improvement of such scheme, the control chip is LM358 chips, and the LM358 chips draw provided with OUTA
Pin, INA- pins, INA+ pins, GND pin, VCC pin, OUTB pins, INB- pins and INB+ pins.
As the improvement of such scheme, the OUTA pins of the control chip pass sequentially through first resistor and the first electric capacity with
Battery voltage is connected, and the INA- pins of the control chip are connected by the first electric capacity with battery voltage.
As the improvement of such scheme, the voltage conversion circuit also include the second electric capacity, second resistance, 3rd resistor and
Magnetic bead, the INA+ pins of the control chip are grounded by second resistance, the GND pin ground connection of the control chip, the control
The VCC pin of coremaking piece with battery voltage is connected by the second capacity earth and by magnetic bead, and the INB- of the control chip draws
Pin is grounded by 3rd resistor.
Implement the beneficial effects of the utility model to be：
The utility model automotive ignition status identification means use hardware circuit（Voltage conversion circuit and level translation electricity
Road）The variable quantity of automobile storage battery voltage is read to recognize the fired state of automobile.
Compared with vehicle-mounted OBD schemes, the utility model uses operational amplifier（LM358 chips）The voltage transformation electricity built
Road recognizes battery voltage variable quantity, and is converted to the high level output of digital quantity, and circuit is simple and power consumption is extremely low.
Compared with existing G_sensor schemes, the utility model is not in due to maloperation caused by vehicle difference
The problem of；And the variable quantity of battery voltage is converted into digital output so that other mobile units need to only read level
Height can judge whether automobile strikes sparks, it is easier to be adapted to other equipment.
Brief description of the drawings
Fig. 1 is the battery voltage change schematic diagram of automobile during automobile sparking；
Fig. 2 is the schematic diagram of the utility model automotive ignition status identification means；
Fig. 3 is the circuit diagram of voltage conversion circuit in the utility model automotive ignition status identification means；
Fig. 4 is the circuit diagram of level-conversion circuit in the utility model automotive ignition status identification means.
Embodiment
It is new to this practicality below in conjunction with accompanying drawing to make the purpose of this utility model, technical scheme and advantage clearer
Type is described in further detail.Only this is stated, the up, down, left, right, before and after of the invention that occurs in the text or will appear from,
The orientation such as inside and outside word, only on the basis of the accompanying drawing of the present invention, it is not the specific restriction to the present invention.
All it is built-in with many mobile units 3 on present automobile, therefore part mobile unit 3 during automobile sparking（Such as middle control）
It can directly work and moment extracts the storage battery electric current of automobile, so as to cause battery voltage to produce certain change in sparking.
And after the completion of automobile sparking, mobile unit 3 comes into stable working condition, therefore battery voltage can keep stable.
As shown in figure 1, VCC_12V_Charge is automobile storage battery voltage, often power supply.When automotive ignition, due to storage battery
Moment is taken out electric current and under-voltage, and battery voltage moment occurs and fallen, and then rises and keeps stable.Wherein, during T1, automobile point
Fire, voltage decline abruptly simultaneously drops to most bottom in T2；During T2 ~ T3, voltage is gradually increasing and steady.
The utility model exactly realizes automotive ignition state by the Variation Features of battery voltage during automotive ignition
Automatic identification.
Referring to Fig. 2, Fig. 2 shows the utility model automotive ignition status identification means 2 and automobile storage battery voltage 1 and vehicle-mounted
The connected mode of equipment 3.Automotive ignition status identification means 2 include the voltage conversion circuit being electrically connected to each other and level translation electricity
Road, wherein：
The voltage conversion circuit is electrically connected with automobile storage battery voltage 1 and for the variable quantity of battery voltage 1 to be converted to
High level output, so as to recognize the fired state of automobile；
The level-conversion circuit is electrically connected with the mobile unit 3 of automobile and for the wake-up level according to mobile unit 3
High level and low level are overturn.
As shown in figure 3, the voltage conversion circuit includes the first electric capacity C1, first resistor R1 and control chip U1, it is described
Battery voltage VCC_12V_Charge is electrically connected by the first electric capacity C1 and first resistor R1 with control chip U1.
The control chip U1 is dual operational amplifier or single channel operational amplifier, preferably LM358 chips.Wherein, institute
LM358 chips are stated provided with OUTA pins, INA- pins, INA+ pins, GND pin, VCC pin, OUTB pins, INB- pins
And INB+ pins.Specifically, the OUTA pins of the control chip U1 pass sequentially through first resistor R1 and the first electric capacity C1 and electricity
Bottle voltage VCC_12V_Charge connections, the INA- pins of the control chip U1 pass through the first electric capacity C1 and battery voltage VCC_
12V_Charge connections.
It should be noted that the output OUTA of voltage conversion circuit=- (the first electric capacity C1 × first resistor R1) d storage batterys electricity
Pressure/dt.Therefore, the actual parameter for adjusting the first electric capacity C1 and first resistor R1 is passed through, you can by battery voltage VCC_12V_
Charge variable quantities are converted to high level output.Understand that, in TI ~ T2 Voltage Drop periods, voltage conversion circuit can with reference to Fig. 1
Battery voltage VCC_12V_Charge variable quantities are effectively converted into output.
Further, the voltage conversion circuit also includes the second electric capacity C2, second resistance R2,3rd resistor R3 and magnetic bead
FB, the INA+ pins of the control chip U1 are grounded by second resistance R2, the GND pin ground connection of the control chip U1, institute
The VCC pin for stating control chip U1 is grounded by the second electric capacity C2 and connected by magnetic bead FB and battery voltage VCC_12V_Charge
Connect, the INB- pins of the control chip U1 are grounded by 3rd resistor R3.
Therefore, the utility model uses operational amplifier（LM358 chips）The voltage conversion circuit built recognizes storage battery
Voltage VCC_12V_Charge variable quantities, and the high level output of digital quantity is converted to, circuit is simple and power consumption is extremely low.
As shown in figure 4, the level-conversion circuit includes NPN type triode Q1, the 4th resistance R4, the 5th resistance R5 and the
Six resistance R6, the base stage of the NPN type triode Q1 is electrically connected with the 4th resistance R4, the colelctor electrode of the NPN type triode Q1
Electrically connected respectively with the 5th resistance R5 and the 6th resistance R6, the grounded emitter of the NPN type triode Q1.
It should be noted that level-conversion circuit can be according to the wake-up level INT1 of actual mobile unit 3 requirement, by height
Level and low level are overturn.
From the foregoing, it will be observed that the utility model automotive ignition status identification means 2 use hardware circuit（Voltage conversion circuit and electricity
Flat translation circuit）The variable quantity of automobile storage battery voltage is read to recognize the fired state of automobile.
Compared with vehicle-mounted OBD schemes, the utility model uses operational amplifier（LM358 chips）The voltage transformation electricity built
Road recognizes battery voltage variable quantity, and is converted to the high level output of digital quantity, and circuit is simple and power consumption is extremely low.
Compared with existing G_sensor schemes, the utility model is not in due to maloperation caused by vehicle difference
The problem of；And the variable quantity of battery voltage is converted into digital output so that other mobile units 3 need to read level
Height can judge whether automobile strikes sparks, it is easier to be adapted to other equipment.
Described above is preferred embodiment of the present utility model, it is noted that for the ordinary skill of the art
For personnel, under the premise without departing from the principles of the invention, some improvements and modifications can also be made, these improvements and modifications
It is considered as protection domain of the present utility model.
Claims (7)
1. a kind of automotive ignition status identification means, it is characterised in that including the voltage conversion circuit and level being electrically connected to each other
Translation circuit, the voltage conversion circuit electrically connects with the battery voltage of automobile and is used to be converted to the variable quantity of battery voltage
High level output, the level-conversion circuit electrically connects with the mobile unit of automobile and is used to be turned over high level and low level
Turn.
2. automotive ignition status identification means as claimed in claim 1, it is characterised in that the level-conversion circuit includes
NPN type triode, the 4th resistance, the 5th resistance and the 6th resistance, the base stage of the NPN type triode are electrically connected with the 4th resistance
Connect, the colelctor electrode of the NPN type triode is electrically connected with the 5th resistance and the 6th resistance respectively, the hair of the NPN type triode
Emitter grounding.
3. automotive ignition status identification means as claimed in claim 1, it is characterised in that the voltage conversion circuit includes the
One electric capacity, first resistor and control chip, the battery voltage are electrically connected by the first electric capacity and first resistor with control chip.
4. automotive ignition status identification means as claimed in claim 3, it is characterised in that the control chip is that double computings are put
Big device or single channel operational amplifier.
5. automotive ignition status identification means as claimed in claim 4, it is characterised in that the control chip is LM358 cores
Piece, the LM358 chips provided with OUTA pins, INA- pins, INA+ pins, GND pin, VCC pin, OUTB pins,
INB- pins and INB+ pins.
6. automotive ignition status identification means as claimed in claim 5, it is characterised in that the OUTA pins of the control chip
Pass sequentially through first resistor and the first electric capacity be connected with battery voltage, the INA- pins of the control chip by the first electric capacity with
Battery voltage is connected.
7. automotive ignition status identification means as claimed in claim 6, it is characterised in that the voltage conversion circuit also includes
Second electric capacity, second resistance, 3rd resistor and magnetic bead, the INA+ pins of the control chip are grounded by second resistance, described
The GND pin ground connection of control chip, the VCC pin of the control chip is by the second capacity earth and passes through magnetic bead and storage battery electricity
Pressure connection, the INB- pins of the control chip are grounded by 3rd resistor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720097983.4U CN206528426U (en) | 2017-01-26 | 2017-01-26 | Automotive ignition status identification means |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720097983.4U CN206528426U (en) | 2017-01-26 | 2017-01-26 | Automotive ignition status identification means |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206528426U true CN206528426U (en) | 2017-09-29 |
Family
ID=59919110
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720097983.4U Expired - Fee Related CN206528426U (en) | 2017-01-26 | 2017-01-26 | Automotive ignition status identification means |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206528426U (en) |
-
2017
- 2017-01-26 CN CN201720097983.4U patent/CN206528426U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| 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: 20170929 Termination date: 20200126 |