CN102855201B - Data recording device and power supply control circuit thereof - Google Patents
Data recording device and power supply control circuit thereof Download PDFInfo
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- CN102855201B CN102855201B CN201210336452.8A CN201210336452A CN102855201B CN 102855201 B CN102855201 B CN 102855201B CN 201210336452 A CN201210336452 A CN 201210336452A CN 102855201 B CN102855201 B CN 102855201B
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D10/00—Energy efficient computing, e.g. low power processors, power management or thermal management
Abstract
The invention provides a data recording device and a power supply control circuit thereof, and is applicable to the field of power supply. The data recording device is provided with a charging module, an electric power charging and discharging module, a first voltage dividing filter module, a power supply module, a second voltage dividing filter module, a power supply judgment module and a resistor R1 power supply control circuit. Corresponding level signals are output in real time according to working states of an external power supply to inform a main control chip to perform corresponding data recording and saving operations, enough electric power can be supplied for the data recording device when in outage of the external power supply, and then the main control chip can save the record data at the moment of outage, so that integrity of recorded data is guaranteed, and the problem that data is lost due to the failure in saving data recorded before outage in the prior art is solved.
Description
Technical field
The invention belongs to power supply control field, particularly relate to a kind of data recording equipment and power-supplying circuit thereof.
Background technology
At present, all need to adopt data recording equipment record data and preserve in a lot of electronic equipment, such as, transport class Fixed Wing AirVehicle all needs install in driving cabin voice recorder with record driver in driving procedure with the speech communication data in the external world.For the data recording fashion in data recording equipment, traditional method realizes data record and preservation by adopting mechanical type or magnetic logging mode, and record data are stopped when data recording equipment power-off, and recorded data can completely be kept in storage medium before power-off, but mechanical type or magnetic logging mode exist and can only record data at short notice, and be inconvenient to the problem realizing data extraction.
In order to solve the problem existing for above-mentioned mechanical type or magnetic logging mode, prior art provides a kind of digital document memory module to realize carrying out non-volatile recording to data, and is convenient to carry out data extraction.But because digital document memory module is higher for the requirement of power supply continuation, if data recording equipment power-off, digital document memory module there will be the integrality that cannot keep recorded data before power-off, thus causes data to go out active.
Summary of the invention
The object of the present invention is to provide a kind of power-supplying circuit of data recording equipment, be intended to solve existing for prior art cannot keep power-off before recorded data integrality and cause the problem of loss of data.
The present invention is achieved in that a kind of power-supplying circuit of data recording equipment, and described power-supplying circuit comprises:
Charging module, electric energy charge and discharge module, the first divider filter module, supply module, the second divider filter module, power supply judge module and resistance R1;
Input end and the output terminal of described charging module are connected the electric energy end of external power source and described electric energy charge and discharge module respectively, and described charging module is used for when described external power source is opened and exported direct current, and introducing described direct current is the charging of described electric energy charge and discharge module;
The discharge end of described electric energy charge and discharge module connects other circuit modules in described data recording equipment, described electric energy charge and discharge module is used for carrying out electrical power storage when there being external power source, and the main control chip when outside power cut-off, stored electric energy is released in described data recording equipment and other circuit modules;
The input end of described first divider filter module and output terminal are connected with the main control chip in the electric energy end of described electric energy charge and discharge module and described data recording equipment respectively, and described first divider filter module exports described main control chip to after being used for carrying out divider filter to the voltage of the electric energy end of described electric energy charge and discharge module;
External power source described in the input termination of described supply module, output terminal and the discharge end of described electric energy charge and discharge module of described supply module are connected main control chip in described data recording equipment and other circuit modules jointly, described supply module for the direct current introduced described external power source and export be in described data recording equipment main control chip and other circuit modules power;
Input end and the output terminal of described second divider filter module are connected the input end of described supply module and the input end of described power supply judge module respectively, and described second divider filter module exports described power supply judge module to after being used for carrying out divider filter to the voltage of the input end of described supply module;
The output terminal of described power supply judge module connects described main control chip, and described power supply judge module is used for judging the whether power-off of described external power source according to the output voltage of described second divider filter module, and exports corresponding level signal to described main control chip;
The first end of described resistance R1 is connected with the input end of described charging module and the input end of described supply module simultaneously, the second end ground connection of described resistance R1, described power supply judge module is used for releasing the residual voltage of the input end of the input end of described charging module and described supply module to ground when described external power source power-off.
Another object of the present invention is also to provide a kind of data recording equipment, and described data recording equipment comprises main control chip and above-mentioned power-supplying circuit.
The present invention comprises described charging module by adopting in data recording equipment, described electric energy charge and discharge module, described first divider filter module, described supply module, described second divider filter module, the power-supplying circuit of described power supply judge module and described resistance R1, corresponding level signal can be exported in real time according to the duty of external power source and inform that main control chip carries out corresponding data record and operates with preservation, and when outside power cut-off for data recording equipment provides enough electric energy supplies, recorded data is preserved in power-cut time by main control chip, thus realize the integrality of data record, solve existing for prior art cannot keep power-off before recorded data integrality and cause the problem of loss of data.
Accompanying drawing explanation
Fig. 1 is the function structure chart of the power-supplying circuit of the data recording equipment that the embodiment of the present invention provides;
Fig. 2 is the exemplary circuit structural drawing of the power-supplying circuit of the data recording equipment that the embodiment of the present invention provides.
Embodiment
In order to make object of the present invention, technical scheme and advantage clearly understand, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
The embodiment of the present invention comprises charging module by adopting in data recording equipment, electric energy charge and discharge module, first divider filter module, supply module, second divider filter module, the power-supplying circuit of power supply judge module and resistance R1, corresponding level signal can be exported in real time according to the duty of external power source and inform that main control chip carries out corresponding data record and operates with preservation, and when outside power cut-off for data recording equipment provides enough electric energy supplies, recorded data is preserved in power-cut time by main control chip, thus realize the integrality of data record.
In embodiments of the present invention, data recording equipment comprises power-supplying circuit, main control chip and other circuit modules.
Fig. 1 shows the modular structure of the power-supplying circuit of the data recording equipment that the embodiment of the present invention provides, and for convenience of explanation, illustrate only part related to the present invention, details are as follows:
The power-supplying circuit of data recording equipment comprises:
Charging module 100, electric energy charge and discharge module 200, first divider filter module 300, supply module 400, second divider filter module 500, power supply judge module 600 and resistance R1.
Input end and the output terminal of charging module 100 are connected the electric energy end of external power source 700 and electric energy charge and discharge module 200 respectively, and charging module 100 is for when external power source 700 is opened and exported direct current, and introducing this direct current is that electric energy charge and discharge module 200 is charged.
Other circuit modules in the discharge end connection data pen recorder of electric energy charge and discharge module 200, electric energy charge and discharge module 200 is for carrying out electrical power storage when there being external power source 700 to power, and the main control chip 800 when external power source 700 power-off, stored electric energy is released in data recording equipment and other circuit modules.
The input end of the first divider filter module 300 and output terminal are connected with the main control chip 800 in the electric energy end of electric energy charge and discharge module 200 and data recording equipment respectively, and the first divider filter module 300 exports main control chip 800 to after carrying out divider filter for the voltage of the electric energy end to electric energy charge and discharge module 200.
The input termination external power source 700 of supply module 400, main control chip 800 in the output terminal of supply module 400 and the common connection data pen recorder of discharge end of electric energy charge and discharge module 200 and other circuit modules, supply module 400 is that main control chip 800 in data recording equipment and other circuit modules are powered for the direct current introduced external power source 700 and export.
Input end and the output terminal of the second divider filter module 500 are connected the input end of supply module 400 and the input end of power supply judge module 600 respectively, and the second divider filter module 500 exports power supply judge module 600 to after carrying out divider filter for the voltage of the input end to supply module 400.
The output terminal of power supply judge module 600 connects main control chip 800, and power supply judge module 600 for judging external power source 700 whether power-off according to the output voltage of the second divider filter module 500, and exports corresponding level signal to main control chip 800.
The first end of resistance R1 is connected with the input end of charging module 100 and the input end of supply module 400 simultaneously, the second end ground connection of resistance R1, power supply judge module 600 is for releasing the residual voltage of the input end of the input end of charging module 100 and supply module 400 to ground when external power source 700 power-off.
Fig. 2 shows the exemplary circuit structure of the power-supplying circuit of the data recording equipment that the embodiment of the present invention provides, and for convenience of explanation, illustrate only part related to the present invention, details are as follows:
As one embodiment of the present invention, charging module 100 comprises diode D1 and resistance R2, the anode of diode D1 is the input end of charging module 100, and the first end of resistance R2 connects the negative electrode of diode D1, and second end of resistance R2 is the output terminal of charging module 100.
As one embodiment of the present invention, electric energy charge and discharge module 200 comprises diode D2, storage capacitor C1, electric capacity C2 and storage capacitor C3, the first end of storage capacitor C1 is the electric energy end of electric energy charge and discharge module 200, the second end ground connection of storage capacitor C1, the anode of diode D2 connects the first end of storage capacitor C1, the negative electrode of diode D2 is the discharge end of electric energy charge and discharge module 200, between the negative electrode that electric capacity C2 and storage capacitor C3 is connected in parallel in diode D2 and ground.
As one embodiment of the present invention, first divider filter module 300 comprises resistance R3, resistance R4 and electric capacity C4, the first end of resistance R3 is the input end of the first divider filter module 300, second end of resistance R3 and the first end of resistance R4 are connected to the first end of electric capacity C4 altogether, the first end of electric capacity C4 is the output terminal of the first divider filter module 300, and second end of resistance R4 and second end of electric capacity C4 are connected to ground altogether.
As one embodiment of the present invention, supply module 400 comprises diode D3, storage capacitor C5, electric capacity C6 and inductance L 1, the anode of diode D3 is the input end of supply module 400, the negative electrode of diode D3 connects the first end of inductance L 1, second end of inductance L 1 is the output terminal of supply module 400, between the first end that storage capacitor C5 and electric capacity C6 is connected in parallel in diode D3 and ground.
As one embodiment of the present invention, second divider filter module 500 comprises electric capacity C7, resistance R5, resistance R6 and electric capacity C8, the first end of electric capacity C7 is the input end of the second divider filter module 500, the second end ground connection of electric capacity C7, the first end of resistance R5 connects the first end of electric capacity C7, second end of resistance R5 and the first end of resistance R6 are connected to the first end of electric capacity C8 altogether, the first end of electric capacity C8 is the output terminal of the second divider filter module 500, and second end of electric capacity C8 and second end of resistance R6 are connected to ground altogether.
As one embodiment of the present invention, power supply judge module 600 comprises:
Microprocessor monitors chip U1, resistance R7, resistance R8, electric capacity C9, NPN type triode Q1, resistance R9 and electric capacity C10;
The supply pin VCC of microprocessor monitors chip U1 is the input end of power supply judge module 600, the grounding leg GND ground connection of microprocessor monitors chip U1, the first end of the reset signal output pin RST connecting resistance R7 of microprocessor monitors chip U1, the first end of second end of resistance R7 and the first end of resistance R8 and electric capacity C9 is connected to the base stage of NPN type triode Q1 altogether, the first end of the emitter of NPN type triode Q1 and the first end of resistance R8 and electric capacity C9 is connected to ground altogether, first termination+3.3V the direct supply of resistance R9, second end of resistance R9 and the collector of NPN type triode Q1 are connected to the first end of electric capacity C10 altogether, the first end of electric capacity C10 is the output terminal of power supply judge module 600, the second end ground connection of electric capacity C10.Wherein, the microprocessor monitors chip of microprocessor monitors chip U1 to be model be MAX810LTR.
Be described further below in conjunction with the power-supplying circuit of principle of work to above-mentioned data recording equipment:
When external power source 700 is opened and is exported direct current, this direct current is charged to storage capacitor C1 by diode D1 and resistance R2, by resistance R3 and resistance R4, dividing potential drop is carried out to the voltage of the first end of storage capacitor C1 simultaneously, and main control chip 800 is exported to after electric capacity C4 filtering, when main control chip 800 detects that the voltage of the first end of this electric capacity C4 reaches preset voltage value, then each circuit module of main control chip 800 meeting control data pen recorder inside starts to carry out record data.
While the above-mentioned course of work, direct current is that main control chip 800 in data recording equipment and other circuit modules are powered by diode D3 and inductance L 1, wherein, storage capacitor C5 and electric capacity C6 carries out energy storage and filtering to the direct current that the negative electrode of diode D3 flows out, meanwhile, resistance R5 and resistance R6 carries out dividing potential drop to the direct current that external power source 700 exports, and after electric capacity C8 filtering, export the supply pin VCC of a high level to microprocessor monitors chip U1, then microprocessor monitors chip U1 can export a low level from its reset signal output pin RST thereupon, this low level enters the base stage of NPN type triode Q1 by resistance R7, and then NPN type triode Q1 is ended, then+3.3V direct supply exports a high level from the collector of NPN type triode Q1 to main control chip 800 by resistance R9, then main control chip 800 proceeds normal data record according to this high level.
When external power source 700 is in power supply process midway power-off, then the residual voltage of the anode of the anode of diode D1 and diode D3 can be released to ground by resistance R1, and resistance R5 and resistance R6 realize the voltage threshold that supply pin VCC that dividing potential drop also can be less than microprocessor monitors chip U1 can receive, then microprocessor monitors chip U1 can export a high level by its reset signal output pin RST, this high level is by resistance R7 driving N PN type triode Q1 conducting, NPN type triode Q1 can draw electric current to ground from resistance R9, and then the current potential of the collector of NPN type triode Q1 is reduced, then main control chip 800 can obtain a low level from the collector of NPN type triode Q1, and according to this low level, its recorded data is preserved, meanwhile, storage capacitor C1 can provide the electric energy of power-cut time to supply to the main control chip 800 in data recording equipment and other circuit modules by diode D2, to ensure that main control chip 800 has time enough to preserve complete for recorded data.
The embodiment of the present invention additionally provides a kind of data recording equipment, and this data recording equipment comprises main control chip 800 and above-mentioned power-supplying circuit.
The embodiment of the present invention comprises charging module by adopting in data recording equipment, electric energy charge and discharge module, first divider filter module, supply module, second divider filter module, the power-supplying circuit of power supply judge module and resistance R1, corresponding level signal can be exported in real time according to the duty of external power source and inform that main control chip carries out corresponding data record and operates with preservation, and when outside power cut-off for data recording equipment provides enough electric energy supplies, recorded data is preserved in power-cut time by main control chip, thus realize the integrality of data record, solve existing for prior art cannot keep power-off before recorded data integrality and cause the problem of loss of data.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, all any amendments done within the spirit and principles in the present invention, equivalent replacement and improvement etc., all should be included within protection scope of the present invention.
Claims (8)
1. a power-supplying circuit for data recording equipment, is characterized in that, described power-supplying circuit comprises:
Charging module, electric energy charge and discharge module, the first divider filter module, supply module, the second divider filter module, power supply judge module and resistance R1;
Input end and the output terminal of described charging module are connected the electric energy end of external power source and described electric energy charge and discharge module respectively, and described charging module is used for when described external power source is opened and exported direct current, and introducing described direct current is the charging of described electric energy charge and discharge module;
The discharge end of described electric energy charge and discharge module connects other circuit modules in described data recording equipment, described electric energy charge and discharge module is used for carrying out electrical power storage when there being external power source, and the main control chip when outside power cut-off, stored electric energy is released in described data recording equipment and other circuit modules;
The input end of described first divider filter module and output terminal are connected with the main control chip in the electric energy end of described electric energy charge and discharge module and described data recording equipment respectively, and described first divider filter module exports described main control chip to after being used for carrying out divider filter to the voltage of the electric energy end of described electric energy charge and discharge module;
External power source described in the input termination of described supply module, output terminal and the discharge end of described electric energy charge and discharge module of described supply module are connected main control chip in described data recording equipment and other circuit modules jointly, and described supply module is that main control chip in described data recording equipment and other circuit modules are powered for the direct current introduced described external power source and export;
Input end and the output terminal of described second divider filter module are connected the input end of described supply module and the input end of described power supply judge module respectively, and described second divider filter module exports described power supply judge module to after being used for carrying out divider filter to the voltage of the input end of described supply module;
The output terminal of described power supply judge module connects described main control chip, and described power supply judge module is used for judging the whether power-off of described external power source according to the output voltage of described second divider filter module, and exports corresponding level signal to described main control chip;
The first end of described resistance R1 is connected with the input end of described charging module and the input end of described supply module simultaneously, the second end ground connection of described resistance R1, described power supply judge module is used for releasing the residual voltage of the input end of the input end of described charging module and described supply module to ground when described external power source power-off.
2. power-supplying circuit as claimed in claim 1, it is characterized in that, described charging module comprises diode D1 and resistance R2, the anode of described diode D1 is the input end of described charging module, the first end of described resistance R2 connects the negative electrode of described diode D1, and second end of described resistance R2 is the output terminal of described charging module.
3. power-supplying circuit as claimed in claim 1, it is characterized in that, described electric energy charge and discharge module comprises diode D2, storage capacitor C1, electric capacity C2 and storage capacitor C3, the first end of described storage capacitor C1 is the electric energy end of described electric energy charge and discharge module, the second end ground connection of described storage capacitor C1, the anode of described diode D2 connects the first end of described storage capacitor C1, the negative electrode of described diode D2 is the discharge end of described electric energy charge and discharge module, between the negative electrode that described electric capacity C2 and described storage capacitor C3 is connected in parallel in described diode D2 and ground.
4. power-supplying circuit as claimed in claim 1, it is characterized in that, described first divider filter module comprises resistance R3, resistance R4 and electric capacity C4, the first end of described resistance R3 is the input end of described first divider filter module, second end of described resistance R3 and the first end of described resistance R4 are connected to the first end of described electric capacity C4 altogether, the first end of described electric capacity C4 is the output terminal of described first divider filter module, and second end of described resistance R4 and second end of described electric capacity C4 are connected to ground altogether.
5. power-supplying circuit as claimed in claim 1, it is characterized in that, described supply module comprises diode D3, storage capacitor C5, electric capacity C6 and inductance L 1, the anode of described diode D3 is the input end of described supply module, the negative electrode of described diode D3 connects the first end of described inductance L 1, second end of described inductance L 1 is the output terminal of described supply module, between the first end that described storage capacitor C5 and described electric capacity C6 is connected in parallel in described diode D3 and ground.
6. power-supplying circuit as claimed in claim 1, it is characterized in that, described second divider filter module comprises electric capacity C7, resistance R5, resistance R6 and electric capacity C8, the first end of described electric capacity C7 is the input end of described second divider filter module, the second end ground connection of described electric capacity C7, the first end of described resistance R5 connects the first end of described electric capacity C7, second end of described resistance R5 and the first end of described resistance R6 are connected to the first end of described electric capacity C8 altogether, the first end of described electric capacity C8 is the output terminal of described second divider filter module, second end of described electric capacity C8 and second end of described resistance R6 are connected to ground altogether.
7. power-supplying circuit as claimed in claim 1, it is characterized in that, described power supply judge module comprises:
Microprocessor monitors chip, resistance R7, resistance R8, electric capacity C9, NPN type triode Q1, resistance R9 and electric capacity C10;
The supply pin of described microprocessor monitors chip is the input end of described power supply judge module, the grounding leg ground connection of described microprocessor monitors chip, the reset signal output pin of described microprocessor monitors chip connects the first end of described resistance R7, the first end of second end of described resistance R7 and the first end of described resistance R8 and described electric capacity C9 is connected to the base stage of described NPN type triode Q1 altogether, the first end of the emitter of described NPN type triode Q1 and the first end of described resistance R8 and described electric capacity C9 is connected to ground altogether, first termination+3.3V the direct supply of described resistance R9, second end of described resistance R9 and the collector of described NPN type triode Q1 are connected to the first end of described electric capacity C10 altogether, the first end of described electric capacity C10 is the output terminal of described power supply judge module, the second end ground connection of described electric capacity C10.
8. a data recording equipment, comprises main control chip, it is characterized in that, described data recording equipment also comprises the power-supplying circuit as described in any one of claim 1 to 7.
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| CN201210336452.8A CN102855201B (en) | 2012-09-12 | 2012-09-12 | Data recording device and power supply control circuit thereof |
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| CN201210336452.8A CN102855201B (en) | 2012-09-12 | 2012-09-12 | Data recording device and power supply control circuit thereof |
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| CN102855201B true CN102855201B (en) | 2015-02-04 |
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| CN111555597A (en) * | 2020-03-31 | 2020-08-18 | 芜湖宏景电子股份有限公司 | Residual current discharge circuit of DDR chip power supply circuit |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202149911U (en) * | 2011-06-27 | 2012-02-22 | 武汉盛帆电子股份有限公司 | Power supply circuit of external battery for intelligent three-phase charge control electric meter |
| CN202815820U (en) * | 2012-09-12 | 2013-03-20 | 深圳市多尼卡电子技术有限公司 | Data recording device and power supplying control circuit thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| TW200737663A (en) * | 2006-03-23 | 2007-10-01 | Novatek Microelectronics Corp | Power supply device of an electronic device |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202149911U (en) * | 2011-06-27 | 2012-02-22 | 武汉盛帆电子股份有限公司 | Power supply circuit of external battery for intelligent three-phase charge control electric meter |
| CN202815820U (en) * | 2012-09-12 | 2013-03-20 | 深圳市多尼卡电子技术有限公司 | Data recording device and power supplying control circuit thereof |
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Effective date of registration: 20200206 Address after: 518000 Guangzhou Nanshan Nantou Street Pass No. 2 Zhiheng Strategic Emerging Industrial Park, 1 Building and 1 Floor Patentee after: Shenzhen city many Nica avionics Co., Ltd. Address before: 518000, Guangdong, Nanshan District, Shenzhen hi tech Industrial Park (North District), 2 dream Creek Road, 6 cool information port, 3 floor Patentee before: DONICA AVIATION ENGINEERING Co.,Ltd. |