CN110209234A - Voltage processing circuitry - Google Patents
Voltage processing circuitry Download PDFInfo
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- CN110209234A CN110209234A CN201910518190.9A CN201910518190A CN110209234A CN 110209234 A CN110209234 A CN 110209234A CN 201910518190 A CN201910518190 A CN 201910518190A CN 110209234 A CN110209234 A CN 110209234A
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- 230000005611 electricity Effects 0.000 claims abstract description 22
- 230000000087 stabilizing effect Effects 0.000 claims abstract description 20
- 238000004891 communication Methods 0.000 claims description 11
- GOLXNESZZPUPJE-UHFFFAOYSA-N spiromesifen Chemical compound CC1=CC(C)=CC(C)=C1C(C(O1)=O)=C(OC(=O)CC(C)(C)C)C11CCCC1 GOLXNESZZPUPJE-UHFFFAOYSA-N 0.000 claims description 10
- 238000001514 detection method Methods 0.000 claims description 7
- 230000001133 acceleration Effects 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 5
- 238000003745 diagnosis Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 238000004458 analytical method Methods 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 2
- 238000005070 sampling Methods 0.000 description 2
- 230000009466 transformation Effects 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000036772 blood pressure Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000011897 real-time detection Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05F—SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES
- G05F1/00—Automatic systems in which deviations of an electric quantity from one or more predetermined values are detected at the output of the system and fed back to a device within the system to restore the detected quantity to its predetermined value or values, i.e. retroactive systems
- G05F1/10—Regulating voltage or current
- G05F1/46—Regulating voltage or current wherein the variable actually regulated by the final control device is dc
- G05F1/56—Regulating voltage or current wherein the variable actually regulated by the final control device is dc using semiconductor devices in series with the load as final control devices
- G05F1/561—Voltage to current converters
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- General Physics & Mathematics (AREA)
- Radar, Positioning & Navigation (AREA)
- Automation & Control Theory (AREA)
- Power Sources (AREA)
Abstract
The present invention provides a kind of voltage processing circuitries, wherein the circuit includes: voltage comparison module, for obtaining the voltage for being input to onboard diagnostic system OBD, and the size relation of the size relation and/or voltage of comparison voltage and first threshold and second threshold；Voltage stabilizing module is connect with voltage comparison module, in the case where voltage is more than or equal to first threshold, reducing the voltage value of voltage to first threshold, and is exported and is reduced to the first voltage of first threshold to HUD equipment；It is also used in the case where voltage is less than first threshold and voltage is more than or equal to second threshold, output second voltage to HUD equipment, wherein the numerical value of second voltage is located between first threshold and second threshold；It is also used in the case where voltage is less than second threshold, forbids for electricity output, the problems such as solving the case where when taking electricity from OBD, the voltage that OBD is provided is easy to appear overload or power shortage, and then cause security risk to the use of HUD equipment.
Description
Technical field
The present invention relates to circuit fields, in particular to a kind of voltage processing circuitry.
Background technique
Onboard diagnostic system OBD equipment currently on the market is various, is substantially after taking electricity from OBD and is depressured, to place
Unit power supply is managed, while obtaining the every terms of information of automobile by OBD interface.There are also in addition a kind of vehicle-mounted product, do not need and OBD
Communication, but need to take electricity from OBD, it is all usually directly to connect automobile power source to equipment from car OBD interface in this kind of equipment.
For example, CN201420446068 discloses following technical scheme: one kind passing through OBD-II vehicle diagnosis interface intelligence
The system for managing mobile unit, voltage transformation module and sampling control module in system are connected to OBD-II vehicle diagnosis
On interface, voltage transformation module supply voltage needed for being converted to mobile unit from the power supply that automobile OBD-II interface provides,
Power supply is provided for mobile unit, and sampling control module adopts the positive voltage of OBD-II vehicle diagnosis interface to it
The information of voltage monitored is transmitted to central processing module central processing module output control signal control mobile unit work by sample
Make.The utility model is by checking that the voltage change of OBD-II vehicle diagnosis interface obtains the starting, enforcement, flame-out, storage of automobile
The information such as battery capacity deficiency, and then the automatic switchover of booting, suspend mode, normal work, shutdown that can control mobile unit etc.,
Artificial participation is reduced, the purpose of unmanned intervention apparatu automatic running is reached, improves automation degree of equipment.In addition,
A kind of mobile unit based on OBD interface, gsm module, processor and acceleration transducer difference are disclosed in CN205311474
It is electrically connected with the output end of voltage conversion circuit；The input terminal and processor of voltage conversion circuit are electric with OBD input interface respectively
Connection；Acceleration transducer is electrically connected with processor respectively with gsm module；Gsm module includes audio treatment unit；Audio processing
Unit is electrically connected with loudspeaker.By the acceleration situation of acceleration transducer real-time detection vehicle driving, and by processor into
Row analysis processing, when the analysis result identification acceleration at this time of processor is to belong to bring to a halt or the case where anxious acceleration, pass through
Audio treatment unit in gsm module is communicated with loudspeaker, is carried out voice broadcast by loudspeaker and is reminded driver, is formed a set of
Most of vehicle completely is applicable to convenient for operation to the system of driver's driving behavior supervision.As it can be seen that above-mentioned technology
The information such as the starting of available automobile, enforcement, flame-out, accumulator electric-quantity deficiency are disclosed in scheme, but are not related to pair
How the voltage of circuit handles and carries out according to OBD the supervision of the driving behavior of driver.
For in the related technology, when taking electricity from OBD, the case where voltage that OBD is provided is easy to appear overload or power shortage, into
And the problems such as security risk is caused to the use of HUD equipment, not yet propose effective technical solution.
Summary of the invention
The embodiment of the invention provides a kind of voltage processing circuitries, and when solving to take electricity from OBD in the related technology, OBD is mentioned
The voltage of confession is easy to appear the case where overload or power shortage, and then the problems such as cause security risk to the use of HUD equipment.
According to one embodiment of present invention, a kind of voltage processing circuitry is provided, comprising: voltage comparison module is used for
It obtains and is input to the voltage of onboard diagnostic system OBD, and the size relation of the voltage and first threshold and/or described
The size relation of voltage and second threshold；Voltage stabilizing module is connect with the voltage comparison module, be used to be greater than in the voltage etc.
In the case where first threshold, the voltage value of the voltage is reduced to the first threshold, and export and be reduced to first threshold
First voltage is to HUD equipment；It is also used to be less than the first threshold in the voltage, and the voltage is more than or equal to second threshold
In the case where, output second voltage to HUD equipment, wherein the numerical value of the second voltage is located at for first threshold and the second threshold
Between value；It is also used to forbid in the case where the voltage is less than the second threshold for electricity output.
Further, the circuit further include: go interference module, connect with the voltage comparison module, for described
Voltage carries out interference and handles, and will go interference treated that voltage is sent to the voltage comparison module.
Further, it is described go interference module include: interference submodule, for by π type filter circuit to the electricity
Pressure carries out interference and handles.
Further, the circuit further include: reference voltage module is connect, for being arranged with the voltage comparison module
The second threshold, and the second threshold after setting is sent to the voltage comparison module.
Further, the circuit further include: the first display module is connect with the Voltage stabilizing module, in the electricity
In the case that pressure is more than or equal to first threshold；Or the voltage is less than the first threshold, and the voltage is more than or equal to the
In the case where two threshold values, show that the OBD is in the signal of work.
Further, the circuit further include: the second display module connect with the Voltage stabilizing module, is also used to described
In the case that voltage is less than second threshold, alarm signal is shown.
Further, the circuit further include: forbid output module, for being less than the second threshold in the voltage
In the case of, forbid exporting the voltage.
Further, the Voltage stabilizing module further include: feedback submodule, for being more than or equal to first threshold in the voltage
In the case where, the signal that the voltage is more than or equal to the first threshold is fed back into control submodule；The control submodule,
After responding the signal, the voltage value of the voltage is reduced to the first threshold.
Further, the circuit includes: communication module, for being communicated with the HUD equipment.
Further, the circuit includes: detection module, for detecting in the circuit when shown OBD is worked normally
Voltage it is whether normal；Whether the communication for being also used to detect between the OBD and the HUD is normal.
Through the invention, voltage comparison module, for obtaining the voltage for being input to onboard diagnostic system OBD, and it is more electric
Pressure and the size relation of first threshold and/or the size relation of voltage and second threshold；Voltage stabilizing module, with voltage comparison module
Connection in the case where voltage is more than or equal to first threshold, reducing the voltage value of voltage to first threshold, and exports reduction
To the first voltage of first threshold to HUD equipment；It is also used to be less than first threshold in voltage, and voltage is more than or equal to second threshold
In the case where, output second voltage is to HUD equipment, wherein the numerical value of second voltage be located at for first threshold and second threshold it
Between；It is also used to forbid for electricity output in the case where voltage is less than second threshold, i.e., be provided with one in OBD or HUD equipment
Protect circuit.It solves in the related technology, when taking electricity from OBD, the voltage that OBD is provided is easy to appear the feelings of overload or power shortage
Condition, and then the problems such as cause security risk to the use of HUD equipment.
In addition, technical solution of the present invention, goes interference module, it is connect with the voltage comparison module, for the electricity
Pressure carries out interference and handles, and will go interference treated that voltage is sent to the voltage comparison module, to make the electricity in OBD
Pressure avoids extraneous interference, it is ensured that the relative stability of circuit point voltage in OBD.
Detailed description of the invention
The drawings described herein are used to provide a further understanding of the present invention, constitutes part of this application, this hair
Bright illustrative embodiments and their description are used to explain the present invention, and are not constituted improper limitations of the present invention.In the accompanying drawings:
Fig. 1 is a kind of schematic diagram of voltage processing circuitry of the embodiment of the present invention；
Fig. 2 is a kind of schematic diagram of voltage processing circuitry according to the preferred embodiment of the invention.
Specific embodiment
Hereinafter, the present invention will be described in detail with reference to the accompanying drawings and in combination with Examples.It should be noted that not conflicting
In the case of, the features in the embodiments and the embodiments of the present application can be combined with each other.
It should be noted that description and claims of this specification and term " first " in above-mentioned attached drawing, "
Two " etc. be to be used to distinguish similar objects, without being used to describe a particular order or precedence order.
Embodiment 1
Fig. 1 is the schematic diagram of voltage processing circuitry according to an embodiment of the present invention, which is applied to flat OBD equipment, such as
Shown in Fig. 1, which includes:
Voltage comparison module 10, for obtaining the voltage for being input to onboard diagnostic system OBD, and comparison voltage and the first threshold
The size relation and/or voltage of value and the size relation of second threshold.
Voltage stabilizing module 12 is connect with voltage comparison module 10, for dropping in the case where voltage is more than or equal to first threshold
The voltage value of low-voltage is exported and is reduced to the first voltage of first threshold to HUD equipment to first threshold；It is also used in voltage
Less than first threshold, and in the case that voltage is more than or equal to second threshold, output second voltage to HUD equipment, wherein the second electricity
The numerical value of pressure is located between first threshold and second threshold；It is also used to forbid supplying in the case where voltage is less than second threshold
Electricity output.
It should be noted that first threshold is greater than second threshold.For example, the voltage of first threshold can be 12V, the second threshold
The voltage of value is 5V.Wherein, the voltage value of the first voltage of first threshold is the value of first threshold.
Wherein, above-mentioned Voltage stabilizing module further include: feedback submodule, for the case where voltage is more than or equal to first threshold
Under, the signal that voltage is more than or equal to first threshold is fed back into control submodule；Control submodule will for receiving signal
Voltage is reduced to first threshold.To which the function of lowering and stabilizing blood pressure may be implemented in Voltage stabilizing module.
Through the invention, voltage comparison module, which obtains, is input to the voltage of onboard diagnostic system OBD, and comparison voltage and the
The size relation and/or voltage of one threshold value and the size relation of second threshold；Voltage stabilizing module is connect with voltage comparison module,
In the case that voltage is more than or equal to first threshold, the voltage value of voltage is reduced to first threshold, and export and be reduced to first threshold
First voltage to HUD equipment；It is also used in the case where voltage is less than first threshold and voltage is more than or equal to second threshold,
Second voltage is exported to HUD equipment, wherein the numerical value of second voltage is located between first threshold and second threshold；It is also used to
In the case where voltage is less than second threshold, forbid for electricity output, i.e., is provided with a protection circuit in OBD or HUD equipment.
It solves in the related technology, when taking electricity from OBD, voltage the case where being easy to appear overload or power shortage that OBD is provided, so that it is right
The problems such as use of HUD equipment causes security risk.
For the stray wave on shielded power supply, while ensuring the interference signal of HUD host not to the other electronic equipments of automobile
It is interfered, foregoing circuit can also include: interference module, connect with voltage comparison module, for do to voltage
Processing is disturbed, and interference will be gone treated that voltage is sent to voltage comparison module.
Wherein, it is above-mentioned go interference module may include: interference submodule, for by π type filter circuit to voltage into
Row goes interference to handle.The simple operation for realizing removal interference.
In order to which the voltage of second threshold is arranged, foregoing circuit can also include: reference voltage module, with voltage comparison module
10 connections, are sent to voltage comparison module 10 for second threshold to be arranged, and by the second threshold after setting.
In order to simply, intuitively obtain the working condition of current circuit, foregoing circuit can also include: the first display mould
Block is connect with Voltage stabilizing module 12, is used in the case where voltage is more than or equal to first threshold or voltage is less than first threshold,
And in the case that voltage is more than or equal to second threshold, display OBD is in the signal of work.
In order to simply, intuitively obtain the working condition of current circuit, foregoing circuit can also include: the second display mould
Block is connect with Voltage stabilizing module, is also used to show alarm signal in the case where voltage is less than second threshold.
When the voltage of current circuit is less than second threshold, the electricity of the power supply of automobile at this time is to be in power shortage, in order to
It when avoiding the electricity of automobile smaller, also needs electricity supplying OBD, can also include: to forbid output module in foregoing circuit, be used for
In the case where voltage is less than second threshold, forbid output voltage.
In order to facilitate the communication between OBD and HUD, foregoing circuit may include: communication module, for carrying out between HUD
Communication.And then the information of installation OBD vehicle can be obtained by communication module, wherein information may include the traveling speed of vehicle
Degree, position of traveling etc..
In the state that if current circuit works really, but since extraneous factor makes circuit be in abnormal working condition,
Then in order to detect such case, foregoing circuit may include: detection module, be used for when shown OBD is worked normally, detection circuit
In voltage it is whether normal；Whether the communication for being also used to detect between OBD and HUD is normal.
It should be noted that above-mentioned detection module is worked in the normal situation of OBD, i.e., voltage be first threshold or
When voltage of person's voltage between first threshold and second threshold.When the voltage in circuit is by external interference, detection module can
It is changed with detecting the voltage of current circuit, the situation of change of voltage can be uploaded to circuit protection module by detection module, will
The communication of circuit disconnects, and then realizes the function of protection OBD.
Fig. 2 is the schematic diagram of voltage processing circuitry according to the preferred embodiment of the invention, which is applied to flat OBD and sets
It is standby, as shown in Fig. 2, the circuit implementations are as follows:
The DC power supply that automobile storage battery comes first passes through interference module 21, concretely π type filter circuit, shielded power supply
On stray wave, while ensuring that the interference signal of HUD host is not interfered the other electronic equipments of automobile.After wave filter
Power supply be divided into two.
On the one hand by voltage-dropping type Voltage stabilizing module 23, by power supply control within 12V, all voltages higher than 12V will be by
It is stabilized to 12V and is then output to HUD equipment；On the other hand it is supplied to the reference voltage that reference voltage module 25 generates 5V.By
Filtered automobile power source and 5V reference voltage are handled by voltage comparison module 27, when automobile storage battery voltage is higher than minimum
Operating voltage, by enable signal control Voltage stabilizing module 23 exported, when automobile storage battery voltage be lower than minimum, lead to
Crossing enable signal forbids Voltage stabilizing module 23 to be exported, to realize low-voltage variation.
Optionally, the specific example in the present embodiment can be with reference to described in above-described embodiment and optional embodiment
Example, details are not described herein for the present embodiment.
Obviously, those skilled in the art should be understood that each module of the above invention or each step can be with general
Computing device realize that they can be concentrated on a single computing device, or be distributed in multiple computing devices and formed
Network on, optionally, they can be realized with the program code that computing device can perform, it is thus possible to which they are stored
It is performed by computing device in the storage device, and in some cases, it can be to be different from shown in sequence execution herein
Out or description the step of, perhaps they are fabricated to each integrated circuit modules or by them multiple modules or
Step is fabricated to single integrated circuit module to realize.In this way, the present invention is not limited to any specific hardware and softwares to combine.
The foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention, for the skill of this field
For art personnel, the invention may be variously modified and varied.It is all within principle of the invention, it is made it is any modification, etc.
With replacement, improvement etc., should all be included in the protection scope of the present invention.
Claims (10)
1. a kind of voltage processing circuitry characterized by comprising
Voltage comparison module, for obtaining the voltage for being input to onboard diagnostic system OBD, and the voltage and first threshold
Size relation and/or the voltage and second threshold size relation；
Voltage stabilizing module is connect with the voltage comparison module, for dropping in the case where the voltage is more than or equal to first threshold
The voltage value of the low voltage is exported and is reduced to the first voltage of first threshold to HUD equipment to the first threshold；Also use
In in the case where the voltage is less than the first threshold and the voltage is more than or equal to second threshold, second voltage is exported
To HUD equipment, wherein the numerical value of the second voltage is located between first threshold and second threshold；It is also used in the electricity
In the case that pressure is less than the second threshold, forbid for electricity output.
2. circuit according to claim 1, which is characterized in that the circuit further include:
Interference module is gone, is connect with the voltage comparison module, is handled for carrying out interference to the voltage, and will go to interfere
Treated, and voltage is sent to the voltage comparison module.
3. circuit according to claim 2, which is characterized in that described to go the interference module to include:
Interference submodule is removed, is handled for carrying out interference to the voltage by π type filter circuit.
4. circuit according to claim 1, which is characterized in that the circuit further include:
Reference voltage module is connect with the voltage comparison module, for being arranged the second threshold, and by second after setting
Threshold value is sent to the voltage comparison module.
5. circuit according to claim 1, which is characterized in that the circuit further include:
First display module is connect with the Voltage stabilizing module, in the case where the voltage is more than or equal to first threshold；Or
In the case that voltage described in person is less than the first threshold, and the voltage is more than or equal to second threshold, show that the OBD is in
The signal of work.
6. circuit according to claim 1, which is characterized in that the circuit further include:
Second display module is connect with the Voltage stabilizing module, is also used to the display in the case where the voltage is less than second threshold
Alarm signal.
7. circuit according to claim 1, which is characterized in that the circuit further include:
Forbid output module, for forbidding exporting the voltage in the case where the voltage is less than the second threshold.
8. circuit according to claim 1, which is characterized in that the Voltage stabilizing module further include:
Submodule is fed back, for the voltage being more than or equal to described in the case where the voltage is more than or equal to first threshold
The signal of first threshold feeds back to control submodule；
The control submodule reduces the voltage value of the voltage to the first threshold after responding the signal.
9. circuit according to claim 1, which is characterized in that the circuit includes:
Communication module, for being communicated with the HUD equipment.
10. circuit according to claim 1, which is characterized in that the circuit includes:
Detection module, for when the OBD is worked normally, whether the voltage detected in the circuit to be normal；It is also used to detect
Whether the communication between the OBD and the HUD equipment is normal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910518190.9A CN110209234B (en) | 2019-06-14 | 2019-06-14 | voltage processing circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910518190.9A CN110209234B (en) | 2019-06-14 | 2019-06-14 | voltage processing circuit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110209234A true CN110209234A (en) | 2019-09-06 |
| CN110209234B CN110209234B (en) | 2024-02-13 |
Family
ID=67792893
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910518190.9A Active CN110209234B (en) | 2019-06-14 | 2019-06-14 | voltage processing circuit |
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| Country | Link |
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| CN (1) | CN110209234B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115309219A (en) * | 2022-08-03 | 2022-11-08 | 上海艾为电子技术股份有限公司 | Start completion indication signal circuit, signal forming method and chip |
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| Publication number | Publication date |
|---|---|
| CN110209234B (en) | 2024-02-13 |
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