CN106476732A - A kind of power supply circuits powered for drive recorder - Google Patents
A kind of power supply circuits powered for drive recorder Download PDFInfo
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- CN106476732A CN106476732A CN201611119453.1A CN201611119453A CN106476732A CN 106476732 A CN106476732 A CN 106476732A CN 201611119453 A CN201611119453 A CN 201611119453A CN 106476732 A CN106476732 A CN 106476732A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R16/00—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for
- B60R16/02—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements
- B60R16/03—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements for supply of electrical power to vehicle subsystems or for
- B60R16/033—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements for supply of electrical power to vehicle subsystems or for characterised by the use of electrical cells or batteries
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- G—PHYSICS
- G07—CHECKING-DEVICES
- G07C—TIME OR ATTENDANCE REGISTERS; REGISTERING OR INDICATING THE WORKING OF MACHINES; GENERATING RANDOM NUMBERS; VOTING OR LOTTERY APPARATUS; ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDED FOR ELSEWHERE
- G07C5/00—Registering or indicating the working of vehicles
- G07C5/08—Registering or indicating performance data other than driving, working, idle, or waiting time, with or without registering driving, working, idle or waiting time
- G07C5/0841—Registering performance data
- G07C5/085—Registering performance data using electronic data carriers
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Abstract
The invention discloses a kind of power supply circuits powered for drive recorder, it is provided with central processing unit, storage circuit, liquid crystal circuit, power circuit, sensor circuit, usb circuit, main power circuit includes power supply U1, diode D4, liquid crystal power supply circuits and central processing unit power supply circuits, it is provided with input stabilizing circuit in central processing unit power supply circuits, diode D2, resistance R2, diode D3, electric capacity C5, electric capacity C6, power supply chip IC1, electric capacity C7, electric capacity C8, the power supply circuits being designed based on voltage stabilizing chip, liquid crystal display screen and electric energy needed for central processing unit offer can be provided, effective guarantee liquid crystal display screen and central processing unit safely and steadily run；It is effectively combined central processing unit, storage circuit, liquid crystal circuit, power circuit, sensor circuit and usb circuit, forms reliable data source, whole circuit has the advantages that design structure is simple and practical, with low cost, stable and reliable operation.
Description
Technical field
The present invention relates to the field such as electronic information technology, consumer electronics, automotive electronic technology, specifically, it is one
Plant the power supply circuits powered for drive recorder.
Background technology
Electronic technology is the principle according to electronics, designs and manufacture the circuit of certain specific function with electronic devices and components
With the science of solving practical problems, including information electronic technology and Power Electronic Technique Liang great branch.Information electronic technology includes
Analog (simulation) electronic technology and Digital (digital) electronic technology.Electronic technology is the skill that electronic signal is processed
Art, the mode of process mainly has：The generation of signal, amplification, filtering, conversion.
Electronic technology is the emerging technology starting late nineteenth century, earlier 1900s to grow up, and twentieth century develops
Rapidly, most widely used, become an important symbol of modern science technology development.In 18 end of the centurys and earlier 1800s
In this period, due to the needs of production development, the research work in terms of electromagnet phenomenon develops quickly.1895, Dutch thing
Neo-confucian Heng get Li Ke finds a place for Lorentz and assumes that electronics exists.1897, English physicist Thomson
(J.J.Thompson) have found electronics with test.1904, British J.A.Fleming invented simplest diode
(diode or valve), for detecting faint radio signal.1906, L.D.Forest set up the 3rd in the diode
Individual electrode (grid, grid) has invented the audion with amplification, and this is most important mileage in electronics early history
Upright stone tablet.Several research worker invention transistors of AT＆T Labs of the U.S. in 1948.First sample of integrated circuit in 1958 is shown in
Zhu Yushi.The appearance of integrated circuit and application, indicate electronic technology development to a new stage.
Electronic technology research be the circuit that electronic device and its electronic device are constituted application.Semiconductor device is to constitute
Various discrete, components and parts that integrated electronic circuit is most basic.Developing rapidly with electronic technology, various semiconductor devices
Emerge in an endless stream.The developing direction of modern power electronics technology, is from the conventional electric power electronics based on low-frequency technology process problem
Learn, change to the modern power electronic direction based on high frequency technique process problem.Power Electronic Technique originates in 50 years
The silicon rectification device of generation last early sixties, its development successively experienced commutator epoch, inverter epoch and converter epoch,
And promote the application in many frontiers for the Power Electronic Technique.That the eighties latter stage and the nineties initial stage grow up,
Power semiconductor multiple device with power MOSFET and IGBT as representative, integrating high frequency, high pressure and high current, shows
Conventional electric power electronic technology comes into the modern power electronic epoch.
Electronic product is the Related product with electric energy as working foundation, main inclusion：Phone, television set, video disc player (VCD,
SVCD, DVD), videocorder, video camera, radio, radio cassette player, combination sound box, compact disc player (CD), computer, mobile communication product
Deng.
Electronic technology be the western countries such as the European U.S. late nineteenth century, earlier 1900s start to grow up emerging
Technology, earliest by American Morse invention telegram in 1837, American Alexandria Bel's invention phone in 1875,
English physicist Fleming invention electron tube in 1902.Electronic product is the rapidest in twentieth century development, most widely used, becomes
An important symbol for the development of modern science technology.
First generation electronic product is with electron tube as core.It has been born first quasiconductor three pole in the world in the forties end
Pipe, the features such as it is with compact, light, power saving, life-span length, soon by various countries' application, instead of electricity in very large range
Son pipe.In the fifties latter stage, occur in that first piece of integrated circuit in the world, it is electronic component integrations such as many transistors one
On block silicon, electronic product is made to develop to smallerization.Integrated circuit develops rapidly extensive from small scale integration
Integrated circuit and super large-scale integration so that electronic product towards high-effect low consumption, in high precision, high stable, intelligence
The direction changed is developed.
Because the four-stage of electronic computer development experience can absolutely prove four ranks of electronic technology development just
The characteristic of section, so just illustrate the spy of the four-stage of electronic technology development from four epoch of electronic computer development below
Point.
Consumption electronic product：
Consumer electronics (non-life must electronic product) refer generally to consumption electronic product, English Consumer
Electronics, the electronic product that confession under directions everyday consumer life uses.Consumption electronic product all has manufacture all over the world,
Due to China's Mainland low-cost advantage, produce Relatively centralized.
Consumer electronics product has different intensions in the country of different level of development, in the different development ranks of same country
Section has different intensions.
China's consumer electronics product refers to for personal and family and broadcast, TV-related Voice ＆ Video product,
Main inclusion：Television set, video disc player (VCD, SVCD, DVD), videocorder, video camera, radio, radio cassette player, combination audio, electricity
Phonograph, compact disc player (CD) etc..And in some developed countries, then phone, PC, work-at-home equipment, domestic electronic
Health care facility, automobile electronics etc. are also returned in consumer electronics product.With technology development and the going out of new product new opplication
Existing, the product such as digital camera, mobile phone, PDA is also becoming emerging consumer electronics product.From later stage nineteen nineties
Start, merged computer, Information And Communication, the information household appliances in the big field of consumer electronics three start widely to go deep into family's life
Live, it has the functions such as audiovisual, information processing, bilateral network communication, by flush bonding processor, associated support hardware (as shown
The reading equipment of card, storage medium, IC-card or the credit card), the software kit composition of embedded OS and application layer.Broad sense
For upper, information household appliances include all household appliances that can pass through network system interactive information, such as PC, Set Top Box, HPC,
DVD, Super Video CD, radio data communication equipment, video game device, intelligent television box, WEBTV etc..At present, audio frequency, video and
Communication apparatus is the key component of information household appliances.In the long term, electric refrigerator, washing machine, microwave oven etc. also will develop into
For information household appliances, and constitute the ingredient of intelligent appliance.
Drive recorder is the instrument that registration of vehicle travels the relevent informations such as image and sound in way.Driving recording is installed
After instrument, it is able to record that video image and the sound of running car overall process, evidence can be provided for vehicle accident.Like self-driving travel
People, can also record the process conquering difficulties and dangers with it.Record a video when walking during driving, simultaneously in place to time, speed, institute
Put and all record in video recording, suitable black box.Also can be in and shoot the joy of life as DV, or make as domestic monitoring
With.At ordinary times can also do parking monitoring, install drive recorder, video data cannot cutting, if cutting, in liability accident
Help then cannot be provided after generation.Also for prevent now society those inevitably touch porcelain behavior.
Drive recorder has the advantage that：
1st, safeguard the legitimate rights and interests of driver, to the pedestrian crossing highway and by bike, motorcycle etc., just in case producing with them
Give birth to scratching it is possible to can be blackmailed, if there are drive recorder, driver can provide effective evidence for oneself.
2nd, monitoring video record is played back, accident responsibility is very clear, and traffic police's process accident is quick and precisely；Both can quickly remove
From in-situ FTIR spectroelectrochemitry traffic, vaild evidence during incident can be retained again, build safe and smooth traffic environment.
If all installing drive recorder in 3 each cars, driver also dare not at will drive against traffic regulations, and accident rate also can
Significantly decline, vehicle all can be filmed by the drive recorder of other vehicles, and escaping behavior after traffic accident case will subtract significantly
Few.
4th, law court, will be more accurately and evidence-based in the measurement of penalty and reparation when trying road traffic accident case,
Provide evidence to the Claims Resolution of insurance company.
5th, encounter specialty and touch porcelain and holding up, drive recorder will can provide the conclusive evidence solved a case：
There is macroscopic features of scene and criminal etc. in accident.
6th, like the friend of self-driving travel, the process conquering difficulties and dangers can also be recorded with it.Record when walking during driving
Picture, all records time, speed, position in video recording simultaneously, is equivalent to black box.
7th, can be in and shoot the joy of life as DV, or monitor use as domestic.Parking monitoring can also be done at ordinary times.
Content of the invention
It is an object of the invention to provide a kind of power supply circuits powered for drive recorder, set based on voltage stabilizing chip
The power supply circuits of meter, can be respectively liquid crystal display screen and electric energy, effective guarantee liquid crystal display screen and centre needed for central processing unit offer
Reason device safely and steadily runs；And it is effectively combined central processing unit, storage circuit, liquid crystal circuit, power circuit, sensor
Circuit and usb circuit so that user can during timely registration of vehicle travels or parking surrounding enviroment real-time
Situation, is that follow-up data calls, formed reliable data source, whole circuit have design structure simple and practical, with low cost, fortune
The advantages of row is reliable and stable, is that driver is affixed by safely, escorts.
The present invention is achieved through the following technical solutions：A kind of power supply circuits powered for drive recorder, in being provided with
Central processor, storage circuit, liquid crystal circuit, power circuit, sensor circuit, usb circuit, central processing unit connects respectively
Storage circuit, liquid crystal circuit, power circuit, sensor circuit and usb circuit, power circuit connection liquid crystal circuit, in institute
State and in power circuit, be provided with main power circuit, main power circuit includes power supply U1, diode D4, liquid crystal power supply circuits and central authorities
Processor power supply, described power supply U1 is connected with liquid crystal power supply circuits and central processing unit power supply circuits respectively, described liquid
Brilliant power supply circuits connection liquid crystal circuit, central processing unit power supply circuits connect central processing unit；Power in described central processing unit
Be provided with circuit input stabilizing circuit, diode D2, resistance R2, diode D3, electric capacity C5, electric capacity C6, power supply chip IC1,
Electric capacity C7, electric capacity C8, power supply U1 connects the input of input stabilizing circuit, the outfan of input stabilizing circuit by diode D4
It is connected with the input of liquid crystal power supply circuits and the positive pole of diode D2 respectively, the negative pole of diode D2 is respectively with resistance R2's
First end, the Vin foot of the first end of electric capacity C5, the first end of electric capacity C6 and power supply chip IC1 are connected, second end of resistance R2
It is grounded by diode D3, the Vout foot of power supply chip IC1 is connected with the first end of electric capacity C7 and the first end of electric capacity C8 respectively
Connect and be connected with the power supply foot of central processing unit, second end of electric capacity C5 respectively with second end of electric capacity C6, electric capacity C7
The GND foot at two ends, second end of electric capacity C8 and power supply chip IC1 is connected and is grounded.
Further is that the present invention is better achieved, and especially adopts following setting structures：Arrange in input stabilizing circuit
There are diode D5, resistance R1, stabilivolt VS, electric capacity C1, electric capacity C2, the positive pole of diode D5 connects the negative of diode D4 respectively
Pole, the input of the negative pole of stabilivolt VS, the positive pole of diode D2 and liquid crystal power supply circuits, the negative pole of diode D5 passes through resistance
R1 is grounded, the plus earth of stabilivolt VS, and electric capacity C1 and electric capacity C2 is connected in parallel on the two ends of stabilivolt VS and is arranged on stabilivolt VS
Outlet side.
Further is that the present invention is better achieved, and especially adopts following setting structures：In described liquid crystal power supply circuits
It is provided with power supply chip IC2, electric capacity C3 and electric capacity C4, the Vin foot of power supply chip IC2 is connected on the outlet side of electric capacity C2, electricity
Hold C3 shunt capacitance C4 and be connected between the Vout foot of power supply chip IC2 and GND foot.
Further is that the present invention is better achieved, and especially adopts following setting structures：Described diode D3 is using luminous
Diode, diode D5 also adopts light emitting diode, and power supply chip IC1 adopts 4275 power supply chips, and power supply chip IC2 adopts
LM7805 series of power chip.
Further is that the present invention is better achieved, and especially adopts following setting structures：Also set in described power circuit
It is equipped with auxiliary power, described auxiliary power includes power supply U2 and diode D1, and power supply U2 passes through the first of diode D1 and resistance R2
End is connected, and the negative pole of diode D1 connects the first end of resistance R2.
Further is that the present invention is better achieved, and especially adopts following setting structures：Also include and central processing unit phase
The buzzer connecting and power failure signal testing circuit.
Further is that the present invention is better achieved, and especially adopts following setting structures：Described storage circuit includes at random
Memorizer, SD storage circuit and storage switch, described storage switch stores electricity with central processing unit, random access memory and SD respectively
Road is connected.
Further is that the present invention is better achieved, and especially adopts following setting structures：Described random access memory is using dynamic
State random access memory or/and SRAM.
Further is that the present invention is better achieved, and especially adopts following setting structures：Described usb circuit include according to
Secondary connected chip interface circuit and USB interface, described chip interface circuit connects central processing unit, and described sensor circuit is adopted
With thermal infrared sensor, described liquid crystal circuit adopts LCD liquid crystal circuit, is also associated with CAN and drives on described central processing unit
Device.
Further is that the present invention is better achieved, and especially adopts following setting structures：Described central processing unit adopts
STM32F412CORTEX-M4 entry level high-performance microcontroller.
The present invention compared with prior art, has advantages below and beneficial effect：
The power supply circuits that the present invention is designed based on voltage stabilizing chip, can be respectively liquid crystal display screen and central processing unit provides institute
Need electric energy, effective guarantee liquid crystal display screen and central processing unit safely and steadily run；And it is effectively combined central processing unit, storage
Circuit, liquid crystal circuit, power circuit, sensor circuit and usb circuit are so that user being capable of timely registration of vehicle row
During sailing or parking surrounding enviroment real time status, be that follow-up data calls, form reliable data source, whole circuit has
Design structure is simple and practical, with low cost, stable and reliable operation the advantages of, be that driver is affixed by safely, escort.
Auxiliary power designed by the present invention can be so that central processing unit and its outer in the case of the unexpected power down of main power source
Enclose circuit still to work, and timely carry out file closing so that file physical length and gathered data record sum still
Can be intact write in file relevant header, thus avoiding the occurrence of the later stage when calling data, Windows will be unable to find file
End, PC software also cannot open file because can not find the end of gathered data, thus drive recorder collection
The situation of data failure, thus effectively ensure drive recorder can not lack carry out data acquisition, be that later stage perfection is in
Sound assurance is now provided.
The present invention adopts the design structure that single-chip microcomputer and liquid crystal are individually powered, during main power source normal work, whole system
Power supply is supplied by main power source, once main power source power down, auxiliary power is only powered to central processing unit, completes to close for central processing unit
File process, and liquid crystal does not work because of power down；The power supply mode on this kind of separately 2 tunnels is not only provided that the power supply closing closed file needs
Will, and also a saving battery electric power.
Power failure signal testing circuit of the present invention, when detecting main power source power down, using central processing unit cooperation
Enable buzzer and light emitting diode abnormal to remind user's power supply to power, power supply connects so that user check that monitor
Whether head contacts good, consequently facilitating be switched to using main power source.
Brief description
Fig. 1 is power circuit principle figure of the present invention.
Fig. 2 is principle of the invention block diagram.
Specific embodiment
With reference to embodiment, the present invention is described in further detail, but embodiments of the present invention not limited to this.
It should be noted that in the practical application of the present invention, be inevitably applied to software program, but applicant
It is hereby stated that, the software program that this technical scheme is applied in the specific implementation is all prior art, in this application, is not related to
To change and the protection of software program, the simply protection to the hardware structure designing for realizing goal of the invention.
Embodiment 1：
A kind of power supply circuits powered for drive recorder, the power supply circuits being designed based on voltage stabilizing chip, Neng Goufen
Not for liquid crystal display screen and electric energy needed for central processing unit offer, effective guarantee liquid crystal display screen and central processing unit safely and steadily run；
And it is effectively combined central processing unit, storage circuit, liquid crystal circuit, power circuit, sensor circuit and usb circuit,
Enable a user to during timely registration of vehicle travels or parking surrounding enviroment real time status, be that follow-up data is adjusted
With, form reliable data source, whole circuit has the advantages that design structure is simple and practical, with low cost, stable and reliable operation,
It is affixed by safely for driver, escorts, as shown in Figure 1 and Figure 2, especially adopt following setting structures：It is provided with central authorities' process
Device, storage circuit, liquid crystal circuit, power circuit, sensor circuit, usb circuit, central processing unit connects storage electricity respectively
Road, liquid crystal circuit, power circuit, sensor circuit and usb circuit, power circuit connection liquid crystal circuit, in described power supply
It is provided with main power circuit, main power circuit includes power supply U1, diode D4, liquid crystal power supply circuits and central processing unit in circuit
Power supply circuits, described power supply U1 is connected with liquid crystal power supply circuits and central processing unit power supply circuits respectively, and described liquid crystal is powered
Circuit connection liquid crystal circuit, central processing unit power supply circuits connect central processing unit；In described central processing unit power supply circuits
Be provided with input stabilizing circuit, diode D2, resistance R2, diode D3, electric capacity C5, electric capacity C6, power supply chip IC1, electric capacity C7,
Electric capacity C8, power supply U1 connect the input of input stabilizing circuit by diode D4, the outfan of input stabilizing circuit respectively with
The input of liquid crystal power supply circuits is connected with the positive pole of diode D2, the negative pole of diode D2 respectively with resistance R2 first
End, the Vin foot of the first end of electric capacity C5, the first end of electric capacity C6 and power supply chip IC1 are connected, and second end of resistance R2 is passed through
Diode D3 be grounded, the Vout foot of power supply chip IC1 be connected with the first end of electric capacity C7 and the first end of electric capacity C8 respectively and
Be connected with the power supply foot of central processing unit, second end of electric capacity C5 respectively with second end of electric capacity C6, second end of electric capacity C7,
The GND foot of second end of electric capacity C8 and power supply chip IC1 is connected and is grounded.
Embodiment 2：
The present embodiment is to optimize further on the basis of above-described embodiment, and further is that the present invention is better achieved,
As shown in Figure 1 and Figure 2, following setting structures are especially adopted：It is provided with diode D5, resistance R1, voltage stabilizing in input stabilizing circuit
Pipe VS, electric capacity C1, electric capacity C2, the positive pole of diode D5 connects the negative pole of diode D4, the negative pole of stabilivolt VS, diode respectively
The positive pole of D2 and the input of liquid crystal power supply circuits, the negative pole of diode D5 is grounded by resistance R1, and the positive pole of stabilivolt VS connects
Ground, electric capacity C1 and electric capacity C2 is connected in parallel on the two ends of stabilivolt VS and is arranged on the outlet side of stabilivolt VS.
Embodiment 3：
The present embodiment is to optimize further on the basis of any of the above-described embodiment, and further is that this is better achieved
Bright, as shown in Figure 1 and Figure 2, especially adopt following setting structures：Be provided with described liquid crystal power supply circuits power supply chip IC2,
The Vin foot of electric capacity C3 and electric capacity C4, power supply chip IC2 is connected on the outlet side of electric capacity C2, electric capacity C3 shunt capacitance C4 and company
It is connected between the Vout foot of power supply chip IC2 and GND foot.
Embodiment 4：
The present embodiment is to optimize further on the basis of any of the above-described embodiment, and further is that this is better achieved
Bright, as shown in Figure 1 and Figure 2, especially adopt following setting structures：Described diode D3 adopts light emitting diode, and diode D5 also adopts
With light emitting diode, using 4275 power supply chips, power supply chip IC2 is using LM7805 series of power chip for power supply chip IC1.
Embodiment 5：
The present embodiment is to optimize further on the basis of any of the above-described embodiment, and further is that this is better achieved
Bright, as shown in Figure 1 and Figure 2, especially adopt following setting structures：It is additionally provided with auxiliary power in described power circuit, described secondary electricity
Source includes power supply U2 and diode D1, and power supply U2 is connected with the first end of resistance R2 by diode D1, and diode D1
Negative pole connect resistance R2 first end；Designed auxiliary power can in the case of the unexpected power down of main power source so that central authorities
Processor and its peripheral circuit still work, and timely carry out the closing of file so that file physical length and gathered data
Record sum still can be intact write in file relevant header, thus avoiding the occurrence of the later stage when calling data, Windows will
The end of file cannot be found, PC software also cannot open file because can not find the end of gathered data, thus going out existing
The situation of car monitor gathered data failure, thus effectively ensure drive recorder can not lack carry out data acquisition,
Assume offer sound assurance for later stage perfection.
Embodiment 6：
The present embodiment is to optimize further on the basis of any of the above-described embodiment, and further is that this is better achieved
Bright, as shown in Figure 1 and Figure 2, especially adopt following setting structures：Also include buzzer and the power supply being connected with central processing unit
Power-off signal testing circuit；Described power failure signal testing circuit, when detecting main power source power down, is joined using central processing unit
It is abnormal to remind user's power supply to power, so that user check that monitor power supply that conjunction enables buzzer and light emitting diode
Whether joint contacts well, consequently facilitating be switched to using main power source.
Embodiment 7：
The present embodiment is to optimize further on the basis of any of the above-described embodiment, and further is that this is better achieved
Bright, as shown in Figure 1 and Figure 2, especially adopt following setting structures：Described storage circuit include random access memory, SD storage circuit and
Storage switch, described storage switch is connected with central processing unit, random access memory and SD storage circuit respectively.
Embodiment 8：
The present embodiment is to optimize further on the basis of any of the above-described embodiment, and further is that this is better achieved
Bright, as shown in Figure 1 and Figure 2, especially adopt following setting structures：Described random access memory adopts dynamic RAM or/and quiet
State random access memory；The feature of static memory (SRAM) is that operating rate is fast, as long as power supply is not removed, the information of write SRAM
Would not disappear it is not necessary to refresh circuit, not destroy, when reading, the information originally deposited simultaneously, can repeatedly read once write
Go out, but integrated level is relatively low, power consumption is larger, make cache memory (Cache) in the present invention and use.DRAM is dynamic random
Memorizer (DynamicRandomAccessMemory), it is the distribution capacity between its substrate for the grid using field effect transistor
To preserve information, with store electric charge number, that is, the height of electric capacity terminal voltage to be representing " 1 " and " 0 ", in the present invention as main
Memorizer uses.
Embodiment 9：
The present embodiment is to optimize further on the basis of any of the above-described embodiment, and further is that this is better achieved
Bright, as shown in Figure 1 and Figure 2, especially adopt following setting structures：Described usb circuit includes the chip interface electricity being sequentially connected
Road and USB interface, described chip interface circuit connects central processing unit, and described sensor circuit adopts thermal infrared sensor, institute
State liquid crystal circuit and adopt LCD liquid crystal circuit, CAN driver is also associated with described central processing unit；Described CAN driver is adopted
Use PCA82C250 driving chip, described LCD liquid crystal circuit adopts WYM19264, described chip interface circuit adopts CH375 interface
Chip.
Embodiment 10：
The present embodiment is to optimize further on the basis of any of the above-described embodiment, and further is that this is better achieved
Bright, as shown in Figure 1 and Figure 2, especially adopt following setting structures：Described central processing unit is entered using STM32F412CORTEX-M4
Gate leve high-performance microcontroller.
Using the design structure of the independent power supply of single-chip microcomputer and liquid crystal, during main power source normal work, the power supply of whole system by
Main power source supplies, once main power source power down, auxiliary power is only powered to central processing unit, completes to close at closed file for central processing unit
Reason, and liquid crystal does not work because of power down；The power supply mode on this kind of separately 2 tunnels is not only provided that the power supply needs closing closed file, and
And also a saving battery electric power.
The present invention not only gathers the CAN message of in-car, also can Real-time Collection analogue signal amount as needed.Liquid crystal display screen
(LCD liquid crystal circuit) is used for showing each road signal value of collection, has power-down protection, after being re-energised, you can recover aobvious
Show legacy data.It, except being shown in real time with outdoor with liquid crystal display screen, also can be deposited by the data collecting by usb circuit
Store up in u disk, in case the later stage uses, when using as store function to be realized, press storage switch.Storage switch is simultaneously
Also realize the handoff functionality of random access memory and SD storage circuit.
Present invention preferably employs the MC9S12XD series monolithic of STMicw Electronics (ST) company.It is to control and communication unit
The core divided, is not only responsible for system initialization setting and message receives, and realizes relevant data and judge to process and display.Piece
Inside it is integrated with the analog- and digital- peripheral hardware of almost all and the other work(constituting needed for single-chip computer control system data acquisition system
Can part.
STM32F412 microcontroller is the introduction product of high-performance STM32F4 series monolithic it is achieved that under operational mode
Dynamic power consumption and processor performance between optimum balance, even if being also integrated with the small package of 3.653 x 3.651mm
Substantial amounts of breeding property.
STM32F412 MCU can run on operating frequency 100MHz, supports FPU Float Point UnitIn-M4
Core, realizes outstanding low power capabilities under operation and shutdown mode.
STM32F412 single-chip microcomputer utilizes mass data obtaining mode (BAM) that batch data process is carried out optimised power consumption, will
Dynamic power consumption improved efficiency is to a new level.BAM allows communications peripheral to realize batch data to exchange, device simultaneously its
Its part (including CPU) is positively retained at battery saving mode.
It has the property that：
Performance：Under 100MHz frequency, by the ART accelerator of STMicw Electronics, STM32F412 MCU is capable of
125DMIPS/339 CoreMark performance, and achieve from the execution of flash storage zero-waiting.DSP instruction and floating-point operation list
Unit expands the range of application of product.
Effect：This series of products of ST adopt STMicw Electronics's 90nm technique, adjust work(using ART accelerator and dynamic power consumption
Can, from flash storage execute instruction, under operational mode, can achieve the current drain of as little as 112 μ A/MHz.Under shutdown mode,
Power consumption as little as 18 μ A.
Integrated level：The built-in up to flash storage of 512 to 1024KB of STM32F412 single-chip microcomputer and up to 256KB's
SRAM.
Possess class wrapper each from 48 to 144 pins；4 road USART, speed may be up to 12.5Mbit/s；5 road SPI are (with I2S
Multiplexing), speed is up to 50Mbit/s；4 I2C, up to 1Mbps；2x CAN (2.0B is effective)；All encapsulation all carry 1 SDIO,
Clock is up to 48MHz；1 full speed USB 2.0OTG；2 full duplexs I2S, highest 32-bit/192kHz；3 either simplex I2S, highest
32-bit/192kHz；2 digital filters, for ∑ Delta modulator；4 PDM interfaces, support stereophony microphone；Speed is high
Reach 12 ADC of 2.4MSPS；14 intervalometers, frequency is up to the 16 and 32 bit timing devices of 100MHz；Hardware random number occurs
Device.
When using, monitor power supply takes from 12V Vehicular accumulator cell power supply (main power source U1), and this power supply removes for system work
Outward, also undertake the power supply of the equipment such as igniting, illumination, signal, power-supply fluctuation is big, serious interference, due to automobile in the process of moving,
Be likely encountered the more severe situation of pavement behavior it may appear that monitor power interface due to caused by strenuous vibration loosen or
Loose contact.Auxiliary power U2 is the 6V backup battery being provided by battery, and U1 (main power source) is vehicle-mounted 12V power supply, this power module
It is divided into 2 tunnels ,+5v (VCC2) voltage after 7805 voltage stabilizings is individually powered to liquid crystal, the VCC1 after 4275 conversions gives whole
Single-chip microcomputer and auxiliary circuit are powered.During system worked well, diode D1 is in cut-off state, and reserce cell (auxiliary power) does not rise
Effect, once losing main power source supply, then diode D1 turns on rapidly, and backup battery automatic is system power supply.
The CH375 that chip interface circuit in the present invention is selected, this chip supports host mode and DeviceMode. it has
8 bit data bus and reading and writing, piece select control line and interrupt output, can easily be articulated on the system bus of single-chip microcomputer.
The firmware of the also built-in special communication protocol processing Mass Storage mass memory unit, external microcontroller can be direct
U disk is read and write for ultimate unit with sector.
The above, be only presently preferred embodiments of the present invention, and not the present invention is done with any pro forma restriction, every according to
Any simple modification above example made according to the technical spirit of the present invention, equivalent variations, each fall within the protection of the present invention
Within the scope of.
Claims (10)
1. a kind of power supply circuits powered for drive recorder it is characterised in that：Be provided with central processing unit, storage circuit,
Liquid crystal circuit, power circuit, sensor circuit, usb circuit, central processing unit connect respectively storage circuit, liquid crystal circuit,
Power circuit, sensor circuit and usb circuit, power circuit connection liquid crystal circuit, it is provided with described power circuit
Main power circuit, main power circuit includes power supply U1, diode D4, liquid crystal power supply circuits and central processing unit power supply circuits, institute
State power supply U1 to be connected with liquid crystal power supply circuits and central processing unit power supply circuits respectively, described liquid crystal power supply circuits connect liquid crystal
Circuit, central processing unit power supply circuits connect central processing unit；It is provided with input steady in described central processing unit power supply circuits
Volt circuit, diode D2, resistance R2, diode D3, electric capacity C5, electric capacity C6, power supply chip IC1, electric capacity C7, electric capacity C8, power supply
U1 connects the input of input stabilizing circuit by diode D4, the outfan of input stabilizing circuit respectively with liquid crystal power supply circuits
Input be connected with the positive pole of diode D2, the negative pole of diode D2 respectively with the first end of resistance R2, electric capacity C5
The Vin foot of one end, the first end of electric capacity C6 and power supply chip IC1 is connected, and second end of resistance R2 is grounded by diode D3,
The Vout foot of power supply chip IC1 be connected with the first end of electric capacity C7 and the first end of electric capacity C8 respectively and with central processing unit
Power supply foot is connected, second end of electric capacity C5 respectively with second end of electric capacity C6, second end of electric capacity C7, electric capacity C8 the second end
And the GND foot of power supply chip IC1 is connected and is grounded.
2. a kind of power supply circuits powered for drive recorder according to claim 1 it is characterised in that：Steady in input
It is provided with diode D5, resistance R1, stabilivolt VS, electric capacity C1, electric capacity C2, the positive pole of diode D5 connects two respectively in volt circuit
The negative pole of pole pipe D4, the input of the negative pole of stabilivolt VS, the positive pole of diode D2 and liquid crystal power supply circuits, diode D5's is negative
Pole is grounded by resistance R1, the plus earth of stabilivolt VS, and electric capacity C1 and electric capacity C2 is connected in parallel on two ends and the setting of stabilivolt VS
Outlet side in stabilivolt VS.
3. a kind of power supply circuits powered for drive recorder according to claim 2 it is characterised in that：In described liquid
It is provided with power supply chip IC2, electric capacity C3 and electric capacity C4, the Vin foot of power supply chip IC2 is connected to electric capacity C2's in brilliant power supply circuits
On outlet side, electric capacity C3 shunt capacitance C4 and being connected between the Vout foot of power supply chip IC2 and GND foot.
4. a kind of power supply circuits powered for drive recorder according to claim 3 it is characterised in that：Described two poles
Pipe D3 adopts light emitting diode, and diode D5 also adopts light emitting diode, and power supply chip IC1 adopts 4275 power supply chips, power supply
Chip IC 2 adopts LM7805 series of power chip.
5. a kind of power supply circuits powered for drive recorder according to any one of claim 1-4 it is characterised in that：
It is additionally provided with auxiliary power in described power circuit, described auxiliary power includes power supply U2 and diode D1, and power supply U2 passes through two
Pole pipe D1 is connected with the first end of resistance R2, and the negative pole of diode D1 connects the first end of resistance R2.
6. a kind of power supply circuits powered for drive recorder according to any one of claim 1-4 it is characterised in that：
Also include buzzer and the power failure signal testing circuit being connected with central processing unit.
7. a kind of power supply circuits powered for drive recorder according to any one of claim 1-4 it is characterised in that：
Described storage circuit includes random access memory, SD storage circuit and storage switch, described storage switch respectively with central processing unit,
Random access memory and SD storage circuit are connected.
8. a kind of power supply circuits powered for drive recorder according to claim 7 it is characterised in that：Described random
Memorizer adopts dynamic RAM or/and SRAM.
9. according to claim 1-4, a kind of power supply circuits powered for drive recorder described in 8 any one, its feature exists
In：Described usb circuit includes the chip interface circuit being sequentially connected and USB interface, during described chip interface circuit connects
Central processor, described sensor circuit adopts thermal infrared sensor, and described liquid crystal circuit adopts LCD liquid crystal circuit, in described
CAN driver is also associated with central processor.
10. according to claim 1-4, a kind of power supply circuits powered for drive recorder described in 8 any one, its feature exists
In：Described central processing unit adopts STM32F412CORTEX-M4 entry level high-performance microcontroller.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201611119453.1A CN106476732A (en) | 2016-12-08 | 2016-12-08 | A kind of power supply circuits powered for drive recorder |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201611119453.1A CN106476732A (en) | 2016-12-08 | 2016-12-08 | A kind of power supply circuits powered for drive recorder |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107546843A (en) * | 2017-07-19 | 2018-01-05 | 深圳市麦道微电子技术有限公司 | A kind of drive recorder power control system of multiple feed |
| CN108275091A (en) * | 2018-02-05 | 2018-07-13 | 苏州睿艾迪汽车科技有限公司 | Automobile power back door ECU power-supply management systems |
| CN110562172A (en) * | 2019-09-19 | 2019-12-13 | 浙江大华技术股份有限公司 | Power supply device and method and vehicle power supply system |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104574570A (en) * | 2015-02-06 | 2015-04-29 | 成都市科虹电子有限公司 | Rearview mirror automobile data recorder |
| US20160274658A1 (en) * | 2013-12-02 | 2016-09-22 | Yazaki Corporation | Graphic meter device |
| CN106127884A (en) * | 2016-08-15 | 2016-11-16 | 成都为帆斯通科技有限公司 | A kind of multifunctional running monitor with automatic regulating function |
| CN205788331U (en) * | 2016-05-26 | 2016-12-07 | 深圳市思博瑞德信息技术有限公司 | There is the drive recorder of anti-fatigue-driving function |
| CN206243102U (en) * | 2016-12-08 | 2017-06-13 | 重庆互兴科技有限公司 | A kind of power supply circuit powered for drive recorder |
-
2016
- 2016-12-08 CN CN201611119453.1A patent/CN106476732A/en not_active Withdrawn
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20160274658A1 (en) * | 2013-12-02 | 2016-09-22 | Yazaki Corporation | Graphic meter device |
| CN104574570A (en) * | 2015-02-06 | 2015-04-29 | 成都市科虹电子有限公司 | Rearview mirror automobile data recorder |
| CN205788331U (en) * | 2016-05-26 | 2016-12-07 | 深圳市思博瑞德信息技术有限公司 | There is the drive recorder of anti-fatigue-driving function |
| CN106127884A (en) * | 2016-08-15 | 2016-11-16 | 成都为帆斯通科技有限公司 | A kind of multifunctional running monitor with automatic regulating function |
| CN206243102U (en) * | 2016-12-08 | 2017-06-13 | 重庆互兴科技有限公司 | A kind of power supply circuit powered for drive recorder |
Non-Patent Citations (1)
| Title |
|---|
| 李俐: "基于CAN总线的行车记录仪设计", 《计算机工程与设计》 * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107546843A (en) * | 2017-07-19 | 2018-01-05 | 深圳市麦道微电子技术有限公司 | A kind of drive recorder power control system of multiple feed |
| CN107546843B (en) * | 2017-07-19 | 2023-03-10 | 深圳市麦道微电子技术有限公司 | Automobile data recorder power supply control system powered by multiple power supplies |
| CN108275091A (en) * | 2018-02-05 | 2018-07-13 | 苏州睿艾迪汽车科技有限公司 | Automobile power back door ECU power-supply management systems |
| CN110562172A (en) * | 2019-09-19 | 2019-12-13 | 浙江大华技术股份有限公司 | Power supply device and method and vehicle power supply system |
| CN110562172B (en) * | 2019-09-19 | 2021-02-26 | 浙江大华汽车技术有限公司 | Power supply device and method and vehicle power supply system |
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