CN102855201A - 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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- CN102855201A CN102855201A CN2012103364528A CN201210336452A CN102855201A CN 102855201 A CN102855201 A CN 102855201A CN 2012103364528 A CN2012103364528 A CN 2012103364528A CN 201210336452 A CN201210336452 A CN 201210336452A CN 102855201 A CN102855201 A CN 102855201A
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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
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- 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 the power supply control field, relate in particular to a kind of data recording equipment and power-supplying circuit thereof.
Background technology
At present, in a lot of electronic equipments, all need to adopt data recording equipment that data are recorded and preserve, for example, on transportation class Fixed Wing AirVehicle, all need in driving cabin, install voice recorder with record the driver in driving procedure with the speech communication data in the external world.For the data recording mode in the data recording equipment, traditional method is by adopting mechanical type or magnetic logging mode to realize data recording and preservation, and when cutting off the power supply, data recording equipment stops record data, and complete being kept in the storage medium of recorded data meeting before the outage, but there are at short notice record data in mechanical type or magnetic logging mode, and are inconvenient to realize the problem of data extraction.
In order to solve above-mentioned mechanical type or the existing problem of magnetic logging mode, prior art provides a kind of digital document memory module with realization data to be carried out non-volatile recording, and is convenient to carry out the data extraction.Yet because the digital document memory module is higher for the requirement of power supply continuation, if the data recording equipment outage, the digital document memory module can occur keeping the integrality of front recorded data of cutting off the power supply, thereby 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 the integrality of the existing front recorded data that can't keep cutting off the power supply of prior art 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 dividing potential drop filtration module, supply module, the second dividing potential drop filtration module, power supply judge module and resistance R 1;
The input end of described charging module and output terminal connect respectively the electric energy end that external power source and described electric energy charge and discharge module, and described charging module is used for opening and during output DC, introducing described direct current is that described electric energy charges and discharge the module charging at described external power source;
The discharge end that described electric energy charges and discharge module connects other circuit modules in the described data recording equipment, described electric energy charges and discharge module and is used in the situation that there is external power source to carry out electrical power storage, and externally stored electric energy is released into during power cut-off main control chip and other circuit modules in the described data recording equipment;
The input end of described the first dividing potential drop filtration module is connected the electric energy end that charges and discharge module with described electric energy and is connected with the main control chip of being connected in the data recording equipment with output terminal, the voltage that described the first dividing potential drop filtration module is used for described electric energy is charged and discharged the electric energy end of module carries out exporting described main control chip to after the dividing potential drop filtering;
The described external power source of input termination of described supply module, the discharge end that the output terminal of described supply module and described electric energy charge and discharge module is connected main control chip and other circuit modules in the described data recording equipment jointly, described supply module be used for introducing direct current that described external power source exports be described data recording equipment main control chip and other circuit modules power;
The input end of described the second dividing potential drop filtration module and output terminal respectively connect the input end of described supply module and the input end of described power supply judge module, and described the second dividing potential drop filtration module is used for the voltage of the input end of described supply module is carried out exporting described power supply judge module to after the dividing potential drop filtering;
The output terminal of described power supply judge module connects described main control chip, and described power supply judge module is used for judging according to the output voltage of described the second dividing potential drop filtration module whether described external power source cuts off the power supply, and exports corresponding level signal to described main control chip;
The first end of described resistance R 1 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 R 1, described power supply judge module are used for when described external power source outage the residual voltage of the input end of the input end of described charging module and described supply module is released to ground.
Another object of the present invention also is 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 charges and discharge module, described the first dividing potential drop filtration module, described supply module, described the second dividing potential drop filtration module, the power-supplying circuit of described power supply judge module and described resistance R 1, can export in real time corresponding level signal according to the duty of external power source and inform that main control chip carries out corresponding data recording and preserves operation, and externally for providing enough electric energy, data recording equipment supplies with during power cut-off, main control chip is preserved recorded data in power-cut time, thereby realize the integrality of data recording, solved the integrality of the existing front recorded data that can't keep cutting off the power supply of prior art and cause the problem of loss of data.
Description of drawings
Fig. 1 is the modular structure figure of the power-supplying circuit of the data recording equipment that provides of the embodiment of the invention;
Fig. 2 is the exemplary circuit structural drawing of the power-supplying circuit of the data recording equipment that provides of the embodiment of the invention.
Embodiment
In order to make purpose of the present invention, technical scheme and advantage clearer, 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, is not intended to limit the present invention.
The embodiment of the invention comprises charging module by adopting in data recording equipment, electric energy charges and discharge module, the first dividing potential drop filtration module, supply module, the second dividing potential drop filtration module, the power-supplying circuit of power supply judge module and resistance R 1, can export in real time corresponding level signal according to the duty of external power source and inform that main control chip carries out corresponding data recording and preserves operation, and externally for providing enough electric energy, data recording equipment supplies with during power cut-off, main control chip is preserved recorded data in power-cut time, thereby realized the integrality of data recording.
In embodiments of the present invention, comprise power-supplying circuit, main control chip and other circuit modules in the data recording equipment.
Fig. 1 shows the modular structure of the power-supplying circuit of the data recording equipment that the embodiment of the invention provides, and for convenience of explanation, only shows part related to the present invention, and details are as follows:
The power-supplying circuit of data recording equipment comprises:
The input end of charging module 100 and output terminal connect respectively the electric energy end that external power source 700 and electric energy charge and discharge module 200, and charging module 100 is used for externally that power supply 700 is opened and during output DC, introducing this direct current is that electric energy charges and discharge module 200 chargings.
Electric energy charges and discharge other circuit modules in the discharge end connection data pen recorder of module 200, electric energy charges and discharge module 200 and is used in the situation that there are external power source 700 power supplies to carry out electrical power storage, and externally stored electric energy is released into during power supply 700 outage main control chip 800 and other circuit modules in the data recording equipment.
The input end of the first dividing potential drop filtration module 300 is connected with output terminal and is charged and discharged the main control chip 800 that the electric energy end of module 200 is connected with data recording equipment with electric energy and be connected, and the voltage that the first dividing potential drop filtration module 300 is used for electric energy is charged and discharged the electric energy end of module 200 carries out exporting main control chip 800 to after the dividing potential drop filtering.
The input termination external power source 700 of supply module 400, the output terminal of supply module 400 and electric energy charge and discharge main control chip 800 and other circuit modules in the common connection data pen recorder of discharge end of module 200, and it is main control chip 800 and the power supply of other circuit modules of data recording equipment that supply module 400 is used for introducing the direct current that external power source 700 exports.
The input end of the second dividing potential drop filtration module 500 and output terminal respectively connect the input end of supply module 400 and the input end of power supply judge module 600, and the second dividing potential drop filtration module 500 is used for the voltage of the input end of supply module 400 is carried out exporting power supply judge module 600 to after the dividing potential drop filtering.
The output terminal of power supply judge module 600 connects main control chip 800, and power supply judge module 600 is used for judging according to the output voltage of the second dividing potential drop filtration module 500 whether external power source 700 cuts off the power supply, and exports corresponding level signal to main control chip 800.
The first end of resistance R 1 is connected with the input end of charging module 100 and the input end of supply module 400 simultaneously, when the second end ground connection of resistance R 1, power supply judge module 600 are used for externally power supply 700 outage the residual voltage of the input end of the input end of charging module 100 and supply module 400 is released to ground.
Fig. 2 shows the exemplary circuit structure of the power-supplying circuit of the data recording equipment that the embodiment of the invention provides, and for convenience of explanation, only shows part related to the present invention, and details are as follows:
As one embodiment of the present invention, charging module 100 comprises diode D1 and resistance R 2, the anode of diode D1 is the input end of charging module 100, and the first end of resistance R 2 connects the negative electrode of diode D1, and the second end of resistance R 2 is the output terminal of charging module 100.
As one embodiment of the present invention, electric energy charges and discharge module 200 and comprises diode D2, storage capacitor C1, capacitor C 2 and storage capacitor C3, the first end of storage capacitor C1 is the electric energy end that electric energy charges and discharge module 200, the second end ground connection of storage capacitor C1, the first end of the anodic bonding storage capacitor C1 of diode D2, the negative electrode of diode D2 is the discharge end that electric energy charges and discharge module 200, and capacitor C 2 and storage capacitor C3 are connected in parallel between the negative electrode and ground of diode D2.
As one embodiment of the present invention, the first dividing potential drop filtration module 300 comprises resistance R 3, resistance R 4 and capacitor C 4, the first end of resistance R 3 is the input end of the first dividing potential drop filtration module 300, the second end of resistance R 3 and the first end of resistance R 4 are connected to the first end of capacitor C 4 altogether, the first end of capacitor C 4 is the output terminal of the first dividing potential drop filtration module 300, and the second end of resistance R 4 and the second end of capacitor C 4 are connected to ground altogether.
As one embodiment of the present invention, supply module 400 comprises diode D3, storage capacitor C5, capacitor C 6 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, the second end of inductance L 1 is the output terminal of supply module 400, and storage capacitor C5 and capacitor C 6 are connected in parallel between the first end and ground of diode D3.
As one embodiment of the present invention, the second dividing potential drop filtration module 500 comprises capacitor C 7, resistance R 5, resistance R 6 and capacitor C 8, the first end of capacitor C 7 is the input end of the second dividing potential drop filtration module 500, the second end ground connection of capacitor C 7, the first end of resistance R 5 connects the first end of capacitor C 7, the second end of resistance R 5 and the first end of resistance R 6 are connected to the first end of capacitor C 8 altogether, the first end of capacitor C 8 is the output terminal of the second dividing potential drop filtration module 500, and the second end of capacitor C 8 and the second end of resistance R 6 are connected to ground altogether.
As one embodiment of the present invention, power supply judge module 600 comprises:
Microprocessor monitors chip U1, resistance R 7, resistance R 8, capacitor C 9, NPN type triode Q1, resistance R 9 and capacitor C 10;
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 the second end of resistance R 7 and the first end of resistance R 8 and capacitor C 9 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 R 8 and capacitor C 9 is connected to ground altogether, the first termination of resistance R 9+3.3V direct supply, the collector of the second end of resistance R 9 and NPN type triode Q1 is connected to the first end of capacitor C 10 altogether, the first end of capacitor C 10 is the output terminal of power supply judge module 600, the second end ground connection of capacitor C 10.Wherein, microprocessor monitors chip U1 is that model is the microprocessor monitors chip of 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 unlatchings and output DC, this direct current charges by diode D1 and 2 couples of storage capacitor C1 of resistance R, the voltage of while by the first end of resistance R 3 and 4 couples of storage capacitor C1 of resistance R carries out dividing potential drop, and through exporting main control chip 800 to after capacitor C 4 filtering, when the voltage that detects the first end of this capacitor C 4 when main control chip 800 reached the predeterminated voltage value, each circuit module that then main control chip 800 can control data recording equipment inside began to carry out record data.
In the above-mentioned course of work, direct current be that main control chip 800 and other circuit modules in the data recording equipment powered by diode D3 and inductance L 1, wherein, the direct current that the negative electrode of storage capacitor C5 and 6 couples of diode D3 of capacitor C flows out carries out energy storage and filtering, meanwhile, resistance R 5 is carried out dividing potential drop with the direct current that 6 pairs of external power sources of resistance R 700 are exported, and through exporting a high level after capacitor C 8 filtering to the supply pin VCC of 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 R 7, and then NPN type triode Q1 is ended, then+the 3.3V direct supply by resistance R 9 from the collector of NPN type triode Q1 to main control chip 800 outputs, one high level, then main control chip 800 is proceeded normal data recording according to this high level.
When external power source 700 cuts off the power supply at power supply process midway, then resistance R 1 can be released the residual voltage of the anode of the anode of diode D1 and diode D3 to ground, and the voltage threshold that resistance R 5 and resistance R 6 dividing potential drop that realizes also can receive less than the supply pin VCC of microprocessor monitors chip U1, then microprocessor monitors chip U1 can export a high level by its reset signal output pin RST, this high level is by resistance R 7 driving N PN type triode Q1 conductings, NPN type triode Q1 can draw electric current to ground from resistance R 9, 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 supply with by main control chip 800 and other circuit module the electric energy that power-cut time be provided of diode D2 in the data recording equipment, has time enough to preserve recorded data is complete to guarantee main control chip 800.
The embodiment of the invention also 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 invention comprises charging module by adopting in data recording equipment, electric energy charges and discharge module, the first dividing potential drop filtration module, supply module, the second dividing potential drop filtration module, the power-supplying circuit of power supply judge module and resistance R 1, can export in real time corresponding level signal according to the duty of external power source and inform that main control chip carries out corresponding data recording and preserves operation, and externally for providing enough electric energy, data recording equipment supplies with during power cut-off, main control chip is preserved recorded data in power-cut time, thereby realize the integrality of data recording, solved the integrality of the existing front recorded data that can't keep cutting off the power supply of prior art and cause the problem of loss of data.
The above only is preferred embodiment of the present invention, not in order to limiting the present invention, all any modifications of doing within the spirit and principles in the present invention, is equal to and replaces and improvement etc., all should be included within protection scope of the present invention.
Claims (8)
1. the power-supplying circuit of a data recording equipment is characterized in that, described power-supplying circuit comprises:
Charging module, electric energy charge and discharge module, the first dividing potential drop filtration module, supply module, the second dividing potential drop filtration module, power supply judge module and resistance R 1;
The input end of described charging module and output terminal connect respectively the electric energy end that external power source and described electric energy charge and discharge module, and described charging module is used for opening and during output DC, introducing described direct current is that described electric energy charges and discharge the module charging at described external power source;
The discharge end that described electric energy charges and discharge module connects other circuit modules in the described data recording equipment, described electric energy charges and discharge module and is used in the situation that there is external power source to carry out electrical power storage, and externally stored electric energy is released into during power cut-off main control chip and other circuit modules in the described data recording equipment;
The input end of described the first dividing potential drop filtration module is connected the electric energy end that charges and discharge module with described electric energy and is connected with the main control chip of being connected in the data recording equipment with output terminal, the voltage that described the first dividing potential drop filtration module is used for described electric energy is charged and discharged the electric energy end of module carries out exporting described main control chip to after the dividing potential drop filtering;
The described external power source of input termination of described supply module, the discharge end that the output terminal of described supply module and described electric energy charge and discharge module is connected main control chip and other circuit modules in the described data recording equipment jointly, described supply module be used for introducing direct current that described external power source exports be described data recording equipment main control chip and other circuit modules power;
The input end of described the second dividing potential drop filtration module and output terminal respectively connect the input end of described supply module and the input end of described power supply judge module, and described the second dividing potential drop filtration module is used for the voltage of the input end of described supply module is carried out exporting described power supply judge module to after the dividing potential drop filtering;
The output terminal of described power supply judge module connects described main control chip, and described power supply judge module is used for judging according to the output voltage of described the second dividing potential drop filtration module whether described external power source cuts off the power supply, and exports corresponding level signal to described main control chip;
The first end of described resistance R 1 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 R 1, described power supply judge module are used for when described external power source outage the residual voltage of the input end of the input end of described charging module and described supply module is released to ground.
2. power-supplying circuit as claimed in claim 1, it is characterized in that, described charging module comprises diode D1 and resistance R 2, the anode of described diode D1 is the input end of described charging module, the first end of described resistance R 2 connects the negative electrode of described diode D1, and the second end of described resistance R 2 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 charges and discharge module and comprises diode D2, storage capacitor C1, capacitor C 2 and storage capacitor C3, the first end of described storage capacitor C1 is the electric energy end that described electric energy charges and discharge module, the second end ground connection of described storage capacitor C1, the first end of the described storage capacitor C1 of the anodic bonding of described diode D2, the negative electrode of described diode D2 is the discharge end that described electric energy charges and discharge module, and described capacitor C 2 and described storage capacitor C3 are connected in parallel between the negative electrode and ground of described diode D2.
4. power-supplying circuit as claimed in claim 1, it is characterized in that, described the first dividing potential drop filtration module comprises resistance R 3, resistance R 4 and capacitor C 4, the first end of described resistance R 3 is the input end of described the first dividing potential drop filtration module, the second end of described resistance R 3 and the first end of described resistance R 4 are connected to the first end of described capacitor C 4 altogether, the first end of described capacitor C 4 is the output terminal of described the first dividing potential drop filtration module, and the second end of described resistance R 4 and the second end of described capacitor C 4 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, capacitor C 6 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, the second end of described inductance L 1 is the output terminal of described supply module, and described storage capacitor C5 and described capacitor C 6 are connected in parallel between the first end and ground of described diode D3.
6. power-supplying circuit as claimed in claim 1, it is characterized in that, described the second dividing potential drop filtration module comprises capacitor C 7, resistance R 5, resistance R 6 and capacitor C 8, the first end of described capacitor C 7 is the input end of described the second dividing potential drop filtration module, the second end ground connection of described capacitor C 7, the first end of described resistance R 5 connects the first end of described capacitor C 7, the second end of described resistance R 5 and the first end of described resistance R 6 are connected to the first end of described capacitor C 8 altogether, the first end of described capacitor C 8 is the output terminal of described the second dividing potential drop filtration module, and the second end of described capacitor C 8 and the second end of described resistance R 6 are connected to ground altogether.
7. power-supplying circuit as claimed in claim 1 is characterized in that, described power supply judge module comprises:
Microprocessor monitors chip, resistance R 7, resistance R 8, capacitor C 9, NPN type triode Q1, resistance R 9 and capacitor C 10;
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 R 7, the first end of the second end of described resistance R 7 and the first end of described resistance R 8 and described capacitor C 9 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 R 8 and described capacitor C 9 is connected to ground altogether, the first termination of described resistance R 9+3.3V direct supply, the collector of the second end of described resistance R 9 and described NPN type triode Q1 is connected to the first end of described capacitor C 10 altogether, the first end of described capacitor C 10 is the output terminal of described power supply judge module, the second end ground connection of described capacitor C 10.
8. a data recording equipment comprises main control chip, it is characterized in that, described data recording equipment also comprises such as each described power-supplying circuit 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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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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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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| 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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| US20070222297A1 (en) * | 2006-03-23 | 2007-09-27 | Min-Hui Hung | Power Supply Device of an Electronic Device |
| 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 |
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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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