CN209409961U - A kind of igniting wakes up detection circuit and mobile unit - Google Patents
A kind of igniting wakes up detection circuit and mobile unit Download PDFInfo
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- CN209409961U CN209409961U CN201822015897.1U CN201822015897U CN209409961U CN 209409961 U CN209409961 U CN 209409961U CN 201822015897 U CN201822015897 U CN 201822015897U CN 209409961 U CN209409961 U CN 209409961U
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Abstract
A kind of igniting wakes up detection circuit and mobile unit comprising ignition module, power module, anti-reverse flow module, energy-storage module and comparison module by power module output current, and generate when ignition module work the voltage decline saltus step of output electric current；Anti-reverse flow module generates first voltage according to output electric current；Energy-storage module stores electric energy, and exports second voltage when exporting electric current and voltage decline saltus step occurring；Comparison module generates igniting detection signal according to the voltage decline saltus step, first voltage and second voltage of output electric current；To make igniting wake up detection circuit without relying upon vehicle ACC signal, it can realize the ignition conditions of detection vehicle, and then it control OBD equipment can be waken up when vehicle is lighted a fire, OBD device sleeps are controlled when not completed igniting to vehicle igniting or vehicle, so as to save the electricity of Vehicular battery.
Description
Technical field
The utility model belongs to mobile unit technical field more particularly to a kind of igniting and wakes up detection circuit and vehicle-mounted set
It is standby.
Background technique
Currently, OBD (On-Board Diagnostic, onboard diagnostic system) equipment is in vehicle stall, in order to save vehicle
The electricity of battery, OBD equipment are generally in dormant state, and when vehicle is opened and lighted a fire, OBD equipment needs to receive vehicle
ACC (Adaptive Cruise Control, adaptive learning algorithms) signal (ignition signal) could wake up, or need to connect
The fired state of vehicle could be detected by entering ACC signal；However, vehicle-mounted OBD equipment is OBDII (the Second On-of standard
Board Diagnostics, vehicle diagnosis second-generation system) interface, it cannot directly access automobile ACC signal, need additionally to increase
Automobile ACC signal could be accessed by adding ACC harness to connect vehicle device with OBD equipment, could detect OBD is lighted a fire and waken up to vehicle whether
Equipment.
Therefore, the igniting wake-up detection circuit in traditional technical solution exists and can not then examine not against vehicle ACC signal
The problem of OBD equipment, is lighted a fire and waken up to measuring car whether.
Utility model content
The utility model provides a kind of igniting and wakes up detection circuit and OBD equipment, it is intended to solve in traditional technical solution
Igniting wake up detection circuit and exist and not against vehicle ACC signal then can not detect OBD equipment is lighted a fire and waken up to vehicle whether
Problem.
The utility model is realized in this way a kind of igniting wakes up detection circuit, comprising:
It is connect with the power module, the ignition module for vehicle igniting；
It is connect with the ignition module, for generating the power supply mould of voltage decline saltus step when the ignition module works
Block；
It is connect with the power module, for generating the anti-reverse flow module of first voltage according to output electric current；
It is connect with the anti-reverse flow module, for storing electric energy, and when voltage decline saltus step occurs for the output electric current
Export the energy-storage module of second voltage；
It is connect with the power module, the anti-reverse flow module and the energy-storage module, for according to the output electric current
Voltage decline saltus step, the first voltage and the second voltage generate the comparison module of igniting detection signal.
The igniting wakes up detection circuit in one of the embodiments, further include: connect, is used for the comparison module
The main control module of mobile unit is waken up according to the igniting detection signal.
The igniting wakes up detection circuit in one of the embodiments, further include: and it is in parallel with energy-storage module, for reducing
The decoupling module of the noise of the second voltage.
The decoupling module includes first capacitor in one of the embodiments,；The first end and electricity of the first capacitor
It connects to source, the second end of the first capacitor is the input/output terminal of the decoupling module.
The comparison module includes: the first operational amplifier, first resistor, second resistance in one of the embodiments,
And 3rd resistor；The first end of the first resistor as the comparison module first input end and with the power module
Connection, the second end of the first resistor are connect with the inverting input terminal of the first comparator, and the first of the second resistance
End, the energy-storage module input/output terminal, it is described decoupling module input/output terminal and the first comparator first
Power end connects the second input terminal as the comparison module altogether and connect with the anti-reverse flow module, and the of the second resistance
Two ends are connect with the non-inverting input terminal of the first comparator, the second source end ground connection of the first comparator, and described first
The first end of the output end of comparator and the 3rd resistor is connected to the interruptive port of the main control module, the 3rd resistor altogether
Second end connect with the power module.
The anti-reverse flow module includes first diode in one of the embodiments,；The anode of the first diode
As the input terminal of the anti-reverse flow module, the cathode of the first diode is the output end of the anti-reverse flow module.
The energy-storage module includes the second capacitor in one of the embodiments,；The first end of second capacitor is grounded,
The second end of second capacitor is the input/output terminal of the energy-storage module.
In addition, also providing a kind of OBD equipment, detection circuit is waken up including above-mentioned igniting.
Above-mentioned igniting wakes up detection circuit, by using ignition module, power module, anti-reverse flow module, energy-storage module
And comparison module, decline comparison module in the voltage of the output electric current generated when ignition module works according to power module
The first voltage and energy-storage module that jump, counterflow-preventing module output current generate are when voltage decline saltus step occurs for output electric current
When the second voltage that exports generate igniting detection signal, and the low and high level of signal is detected by main control module identification ignition, just
It can determine whether vehicle lights a fire, so that igniting be made to wake up detection circuit without relying upon vehicle ACC signal, can realize detection vehicle
Ignition conditions, also can vehicle light a fire when by main control module control OBD equipment wake-up, additionally it is possible to do not light a fire in vehicle
Or completed to control OBD device sleeps when igniting, to save the electricity of Vehicular battery.
Detailed description of the invention
Fig. 1 is the module diagram that the igniting that an embodiment of the present invention provides wakes up detection circuit；
Fig. 2 is the circuit diagram that the igniting that an embodiment of the present invention provides wakes up detection circuit；
Fig. 3 is the module diagram that the igniting that another embodiment of the utility model provides wakes up detection circuit；
Fig. 4 is the circuit diagram that the igniting that another embodiment of the utility model provides wakes up detection circuit；
Fig. 5 is the module diagram that the igniting that another embodiment of the utility model provides wakes up detection circuit；
Fig. 6 is the circuit diagram that the igniting that another embodiment of the utility model provides wakes up detection circuit.
Specific embodiment
In order to make the purpose of the utility model, technical solutions and advantages more clearly understood, below in conjunction with attached drawing and implementation
Example, the present invention will be further described in detail.It should be appreciated that specific embodiment described herein is only used to explain
The utility model is not used to limit the utility model.
The igniting that Fig. 1 shows the utility model preferred embodiment offer wakes up the module diagram of detection circuit, in order to
Convenient for explanation, only the parts related to this embodiment are shown, and details are as follows:
With reference to Fig. 1 and 2, a kind of igniting wake-up detection circuit, comprising: ignition module 50, power module 10, anti-reverse flow module
20, energy-storage module 30 and comparison module 40.
Wherein, ignition module 50 is connect with power module 10, is lighted a fire for vehicle；Power module 10 and ignition module 50 connect
It connects, for generating voltage decline saltus step when ignition module 50 works；Anti-reverse flow module 20 is connect with power module 10, is used for root
First voltage is generated according to output electric current；Energy-storage module 30 is connect with anti-reverse flow module 20, for storing electric energy, and when output electric current
Occur to export second voltage when voltage decline saltus step；Comparison module 40 and power module 10, anti-reverse flow module 20 and energy-storage module
30 connections generate igniting detection signal for the voltage decline saltus step, first voltage and second voltage according to output electric current.This
The power module 10 of embodiment is OBD equipment power supply, and ignition module 50 is sparking plug.Comparison module 40 is specifically used for when igniting mould
When block 50 does not work, low level igniting is generated according to output electric current and first voltage and detects signal；When 50 work of ignition module
When making, signal is detected according to the igniting that the voltage decline saltus step of output electric current and second voltage generate high level.Specific
In embodiment, when ignition module 50 lights a fire to vehicle, power module 10 exports electric current and voltage decline saltus step, counterflow-preventing mould occurs
Block 20 generates first voltage according to output current buck, makes energy-storage module 30 that the output of voltage decline saltus step occur according to output electric current
Second voltage, so that the first input end of comparison module 40 receives second voltage, the second input terminal of comparison module 40 receives defeated
The voltage decline saltus step of electric current out, the voltage of the first input end of comparison module 40 is higher than the voltage of the second input terminal at this time, because
This igniting for generating high level detects signal, when main control module 60 identifies that the igniting detection signal received is high level,
It can determine that ignition module 50 lights a fire to vehicle, while main control module 60 controls OBD equipment and wakes up.Power module 10 can be by
OBD equipment power supply is realized, for exporting direct current.
In the present embodiment, it is generated according to power module 10 when ignition module 50 works by setting comparison module 40
The output voltage decline saltus step of electric current, the first voltage that is generated according to output electric current of anti-reverse flow module 20 and energy-storage module 30
Igniting detection signal is generated in the second voltage exported when exporting electric current and voltage decline saltus step occurring, and passes through main control module 60
Identification ignition detects the low and high level of signal, can determine whether vehicle lights a fire, and does not have to so that the igniting be made to wake up detection circuit
By vehicle ACC signal, the ignition conditions of detection vehicle can be realized.
Fig. 3 and 4 is referred in one of the embodiments, and igniting wakes up detection circuit further include: main control module 60, the master
Control module 60 is connect with comparison module 40, for waking up mobile unit according to igniting detection signal.Master control mould in the present embodiment
Block 60 is realized by the main control chip of OBD equipment.The present embodiment not only can be by comparing the output igniting detection signal of module 40
Whether detection vehicle lights a fire, to can realize the ignition conditions of detection vehicle without relying upon vehicle ACC signal, additionally it is possible to
In vehicle igniting, control OBD equipment is waken up, additionally it is possible to OBD device sleeps is controlled in vehicle stall, to save vehicle electrical
The electricity in pond.
Fig. 5 is referred in one of the embodiments, igniting wakes up detection circuit further include: decoupling module 70, the decoupling mould
Block 70 is in parallel with energy-storage module 30, for reducing the noise of second voltage.The present embodiment setting decoupling module 70 can reduce storage
Energy module 30 exports the noise of second voltage, to export stable second voltage.
Fig. 5 is referred in one of the embodiments, and decoupling module 70 includes first capacitor C1；The first of first capacitor C1
End is connect with power ground, and the second end of first capacitor C1 is the input/output terminal for decoupling module 70.In the particular embodiment,
One capacitor C1 can be constituted in series and parallel using one or more capacitor.
In one of the embodiments, refer to Fig. 6, comparison module 40 include the first operational amplifier A1, first resistor R1,
Second resistance R2 and 3rd resistor R3；First input end and and power supply of the first end of first resistor R1 as comparison module 40
Module 10 connects, and the second end of first resistor R1 and the inverting input terminal of first comparator connect, the first end of second resistance R2,
First power end of the input/output terminal of energy-storage module 30, the input/output terminal for decoupling module 70 and first comparator connects work altogether
For comparison module 40 the second input terminal and connect with anti-reverse flow module 20, the second end of second resistance R2 and first comparator
The of non-inverting input terminal connection, the second source end ground connection of first comparator, the output end of first comparator and 3rd resistor R3
One end is connected to the interruptive port of main control module 60 altogether, and the second end of 3rd resistor R3 is connect with power module 10.In the present embodiment
In, by first resistor R1 and second resistance R2 balanced balanced current, to protect the first operational amplifier A1 not to be burned.Pass through first
Operational amplifier A1 generates igniting detection signal, thus make igniting wake-up detection circuit without relying upon vehicle ACC signal, it can
Enough ignition conditions for realizing detection vehicle.
Fig. 6 is referred in one of the embodiments, and anti-reverse flow module 20 includes first diode D1；First diode D1
Input terminal of the anode as anti-reverse flow module 20, the cathode of first diode D1 is the output end of anti-reverse flow module 20.This reality
Applying the anti-reverse flow module 20 in example may be implemented to generate first voltage according to output electric current, while prevent energy-storage module 30 from lighting a fire
Flow backward when module 50 lights a fire to vehicle to power module 10.
Fig. 6 is referred in one of the embodiments, and energy-storage module 30 includes the second capacitor C2；The first of second capacitor C2
End ground connection, the second end of the second capacitor C2 are the input/output terminal of energy-storage module 30.In the particular embodiment, the second capacitor C2
It can be constituted in series and parallel using one or more capacitor.
In addition, also providing a kind of OBD equipment, detection circuit is waken up including above-mentioned igniting.
The working principle for waking up detection circuit to igniting of the invention by taking Fig. 6 as an example below is illustrated, and details are as follows:
After ignition module 50 does not light a fire or lights a fire to vehicle, the output electric current of power module 10 is to stablize electricity
Pressure makes first diode D1 generate first voltage according to burning voltage, while the second capacitor C2 charges according to first voltage,
The first voltage is the pressure drop (0.7V) that the voltage that power module 10 exports subtracts diode, so that the same phase of first comparator A1
The received voltage of input terminal is the pressure drop (0.7V) that the voltage that power module 10 exports subtracts diode, and first comparator A1
The received voltage of inverting input terminal is the voltage that power module 10 exports, at this time due to the non-inverting input terminal of first comparator A1
The voltage of inverting input terminal of the voltage lower than first comparator A1 generates low level igniting and detects signal, when main control module 60
When identifying that the igniting detection signal received is low level, ignition module 50 can be determined not to vehicle igniting or vehicle
Through completing to light a fire, while main control module 60 controls OBD device sleeps.When ignition module 50 lights a fire to vehicle, power module 10
Output electric current can generate output electric current voltage decline saltus step, make first diode D1 according to output current buck generate first
Voltage makes the second capacitor C2 that voltage decline saltus step output second voltage occur according to output electric current, so that first comparator A1
Non-inverting input terminal second voltage, the inverting input terminal of first comparator A1 receive the voltage decline saltus step of output electric current, at this time by
In the voltage of inverting input terminal of the voltage higher than first comparator A1 of the non-inverting input terminal of first comparator A1, therefore generate high
The igniting of level detects signal, when main control module 60 identifies that the igniting detection signal received is high level, can determine
Ignition module 50 lights a fire to vehicle, while main control module 60 controls OBD equipment and wakes up.
Beneficial effects of the present invention:
(1) voltage by comparing module according to power module in the output electric current generated when ignition module works declines
The first voltage and energy-storage module that jump, counterflow-preventing module output current generate are when voltage decline saltus step occurs for output electric current
When the second voltage that exports generate igniting detection signal, and the low and high level of signal is detected by main control module identification ignition, just
It can determine whether vehicle lights a fire, so that igniting be made to wake up detection circuit without relying upon vehicle ACC signal, can realize detection vehicle
Ignition conditions.
(2) vehicle light a fire when by main control module control OBD equipment wake up, not to vehicle light a fire or vehicle
OBD device sleeps are controlled by main control module when completing igniting, so as to save the electricity of Vehicular battery.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Made any modifications, equivalent replacements, and improvements etc., should all be included in the protection scope of the present invention within mind and principle.
Claims (8)
1. a kind of igniting wakes up detection circuit, which is characterized in that the igniting wakes up detection circuit and includes:
Ignition module for vehicle igniting；
It is connect with the ignition module, for generating the power module of voltage decline saltus step when the ignition module works；
It is connect with the power module, for generating the anti-reverse flow module of first voltage according to output electric current；
It connect with the anti-reverse flow module, is exported for storing electric energy, and when voltage decline saltus step occurs for the output electric current
The energy-storage module of second voltage；And
It is connect with the power module, the anti-reverse flow module and the energy-storage module, for the electricity according to the output electric current
Drops jump, the first voltage and the second voltage generate the comparison module of igniting detection signal.
2. igniting as described in claim 1 wakes up detection circuit, which is characterized in that the igniting wakes up detection circuit and also wraps
It includes:
It is connect with the comparison module, for waking up the main control module of mobile unit according to the igniting detection signal.
3. igniting as claimed in claim 2 wakes up detection circuit, which is characterized in that the igniting wakes up detection circuit and also wraps
It includes:
It is in parallel with energy-storage module, for reducing the decoupling module of the noise of the second voltage.
4. igniting as claimed in claim 3 wakes up detection circuit, which is characterized in that the decoupling module includes first capacitor；
The first end of the first capacitor is connect with power ground, and the second end of the first capacitor is the input of the decoupling module
Output end.
5. igniting as claimed in claim 4 wakes up detection circuit, which is characterized in that the comparison module includes: the first operation
Amplifier, first resistor, second resistance and 3rd resistor；
The first end of the first resistor as the comparison module first input end and connect with the power module, it is described
The second end of first resistor is connect with the inverting input terminal of the first comparator, the first end of the second resistance and described
First power end of first comparator connects the second input terminal as the comparison module altogether, the second end of the second resistance with
The non-inverting input terminal of the first comparator connects, the second source end ground connection of the first comparator, the first comparator
Output end and the first end of the 3rd resistor collectively form the output end of the comparison module, the second of the 3rd resistor
End is connect with the power module.
6. igniting as claimed in claim 5 wakes up detection circuit, which is characterized in that the anti-reverse flow module includes the one or two pole
Pipe；
Input terminal of the anode of the first diode as the anti-reverse flow module, the cathode of the first diode is described
The output end of anti-reverse flow module.
7. igniting as claimed in claim 6 wakes up detection circuit, which is characterized in that the energy-storage module includes the second capacitor；
The first end of second capacitor is grounded, and the second end of second capacitor is the input/output terminal of the energy-storage module.
8. a kind of mobile unit, which is characterized in that wake up detection circuit including the described in any item igniting of claim 1 to 7.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822015897.1U CN209409961U (en) | 2018-11-30 | 2018-11-30 | A kind of igniting wakes up detection circuit and mobile unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822015897.1U CN209409961U (en) | 2018-11-30 | 2018-11-30 | A kind of igniting wakes up detection circuit and mobile unit |
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| CN209409961U true CN209409961U (en) | 2019-09-20 |
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| CN201822015897.1U Active CN209409961U (en) | 2018-11-30 | 2018-11-30 | A kind of igniting wakes up detection circuit and mobile unit |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112212359A (en) * | 2020-09-28 | 2021-01-12 | 华帝股份有限公司 | Power-saving control system and control method for igniter |
| CN112947165A (en) * | 2021-02-01 | 2021-06-11 | 深圳市海沃德科技有限公司 | Method for waking up electronic equipment and electronic equipment |
-
2018
- 2018-11-30 CN CN201822015897.1U patent/CN209409961U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112212359A (en) * | 2020-09-28 | 2021-01-12 | 华帝股份有限公司 | Power-saving control system and control method for igniter |
| CN112947165A (en) * | 2021-02-01 | 2021-06-11 | 深圳市海沃德科技有限公司 | Method for waking up electronic equipment and electronic equipment |
| CN112947165B (en) * | 2021-02-01 | 2024-04-05 | 深圳市海沃德科技有限公司 | Method for waking up electronic equipment and electronic equipment |
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