CN101521410A - Method and device for power failure safeguard - Google Patents
Method and device for power failure safeguard Download PDFInfo
- Publication number
- CN101521410A CN101521410A CN200810178416A CN200810178416A CN101521410A CN 101521410 A CN101521410 A CN 101521410A CN 200810178416 A CN200810178416 A CN 200810178416A CN 200810178416 A CN200810178416 A CN 200810178416A CN 101521410 A CN101521410 A CN 101521410A
- Authority
- CN
- China
- Prior art keywords
- data transmission
- transmission terminal
- super capacitor
- voltage
- power supply
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Classifications
-
- 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
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/30—Systems integrating technologies related to power network operation and communication or information technologies for improving the carbon footprint of the management of residential or tertiary loads, i.e. smart grids as climate change mitigation technology in the buildings sector, including also the last stages of power distribution and the control, monitoring or operating management systems at local level
-
- 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
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S20/00—Management or operation of end-user stationary applications or the last stages of power distribution; Controlling, monitoring or operating thereof
- Y04S20/20—End-user application control systems
Landscapes
- Stand-By Power Supply Arrangements (AREA)
- Direct Current Feeding And Distribution (AREA)
Abstract
The invention provides a method for power failure safeguard, which comprises the following steps that: before the power failure of a data transmission terminal, a power supply voltage is reduced to the rated voltage of a super capacitor; the rated voltage of the super capacitor is raised to the working voltage of the data transmission terminal to supply power for the data transmission terminal; and after the power failure of the data transmission terminal, the super capacitor discharges, and the discharge voltage of the super capacitor is raised to the working voltage of the data transmission terminal to supply power for the data transmission terminal. Thus, the data transmission terminal can work normally to transmit data information and power failure alarming information to a remote control center. The invention also provides a device for power failure safeguard. The method and the device for power failure safeguard ensure that when the power of the data transmission terminal is off, the discharge time of the super capacitor from an initial value of the full charge to the lowest value meets the working time required by the data transmission terminal after power failure, thereby providing long time normal working voltage for the data transmission terminal.
Description
Technical field
The present invention relates to electric automatization control field, particularly a kind of method and apparatus of power down protection.
Background technology
Along with development of science and technology, the application of global positioning system (GPS, Global Position System) and GPRS (GPRS, General Packet Radio Service) more and more widely.Remote monitoring center utilizes the position and the working condition of described GPS and GPRS monitoring terminal.
The data transmission terminal of integrated described GPS and GPRS has obtained extensive use on engineering machinery.The positional information of GPS location engineering machinery.Data transmission terminal is sent to remote monitoring center by GPRS network with the positional information and the floor data information of engineering machinery, is convenient to the relevant information of remote monitoring center management and inquiry engineering machinery.
In the prior art, when the data transmission terminal power down, generally adopting rechargeable battery is the data transmission terminal power supply.But the life-span of rechargeable battery is limited, and hundreds of only can charge.And charging rate is slow, if just powered on and power down, rechargeable battery is not also charged, and this moment, the voltage of rechargeable battery did not satisfy the data transmission terminal requirements of one's work.
It is the data transmission terminal power supply that the technology that has at present adopts super capacitor to replace rechargeable battery.
Referring to Fig. 1, this figure is based on the power down protection circuit diagram of super capacitor in the prior art.
The supply voltage 24V of data transmission terminal reduces to 5V voltage through Switching Power Supply 101.5V voltage is reduced to 4.2V voltage through diode 102 again.4.2V voltage is 104 power supplies of GPRS module.On the other hand, 4.2V voltage is the CPU106 power supply through linear power supply 105.
Charging reaches V during super capacitor 103 work
Work=4.2V.Described GPRS module 104 minimum operating voltages are V
Min=3.8V.When voltage was lower than 3.8V, described GPRS module 104 was with cisco unity malfunction.
When system's power down, the electric energy that super capacitor 103 stores is through overdischarge, for CPU106 work a period of time.CPU106 utilizes and preserves current job information during this period of time.Super capacitor 103 only can be for the time of the about 3.3S of GPRS module 104 operate as normal.But GPRS module 104 needs these job informations to be sent to remote monitoring center by GPRS network through the time about 6S.
In sum, utilize super capacitor to provide enough normal working voltage for a long time at present, make data transmission terminal that the power down information of engineering machinery is sent to remote monitoring center for data transmission terminal.
Summary of the invention
The problem to be solved in the present invention provides a kind of method and apparatus of power down protection, can be when the data transmission terminal power down, for data transmission terminal provides enough normal working voltage for a long time.
The invention provides a kind of method of power down protection, may further comprise the steps:
Before the data transmission terminal power down, be the rated voltage of super capacitor with the supply voltage step-down;
The rated voltage of described super capacitor boosted is the operating voltage of data transmission terminal, is described data transmission terminal power supply;
After the data transmission terminal power down, described super capacitor discharge, the boost in voltage that described super capacitor is discharged is the operating voltage of described data transmission terminal, is described data transmission terminal power supply.
Preferably, described is that the rated voltage of super capacitor is specially with the supply voltage step-down: by Switching Power Supply is the rated voltage of described super capacitor with the supply voltage step-down.
Preferably, also comprise: be described CPU power supply after the operating voltage of described data transmission terminal being converted to the operating voltage of CPU by linear power supply.
Preferably, the operating voltage of described CPU comprises 3.3V and 1.8V, and 3.3V is the IO power supply of CPU, and 1.8V is the kernel power supply of CPU.
Preferably, the operating voltage of described data transmission terminal is 4.2V; The rated voltage of described super capacitor is less than 4.2V.
The present invention also provides a kind of equipment of power down protection, comprises pressure unit, super capacitor and boosting unit;
Described pressure unit, be used for the data transmission terminal power down before, be the rated voltage of super capacitor with the supply voltage step-down;
Described super capacitor is used for store electrical energy;
Described boosting unit, be used for the data transmission terminal power down before, the rated voltage of described super capacitor boosted is the operating voltage of described data transmission terminal, is described data transmission terminal power supply; After also being used for the data transmission terminal power down, described super capacitor discharge, the boost in voltage that described super capacitor is discharged is the operating voltage of described data transmission terminal, is described data transmission terminal power supply.
Preferably, described pressure unit is a Switching Power Supply.
Preferably, described equipment also comprises linear power supply, is used for the operating voltage of data transmission terminal is converted to the operating voltage of CPU, is the CPU power supply.
Preferably, the operating voltage of described CPU comprises 3.3V and 1.8V, and 3.3V is the IO power supply of CPU, and 1.8V is the kernel power supply of CPU.
Preferably, the operating voltage of described data transmission terminal is 4.2V, and the rated voltage of described super capacitor is less than 4.2V.
Compared with prior art, the present invention has the following advantages:
The invention provides a kind of method and apparatus of power down protection, can be when the data transmission terminal power down, stored voltage on the super capacitor boosted is the data transmission terminal required voltage.Stored voltage is as the operating voltage of boosting unit on the super capacitor.As long as the voltage on the super capacitor can guarantee the boosting unit operate as normal, boosting unit just can boost stored voltage on the super capacitor and be the operating voltage of data transmission terminal.Thereby data transmission terminal can operate as normal be sent to remote control center with data message and power down warning message.Therefore; the method and apparatus of power down protection provided by the invention can guarantee when the data transmission terminal power down; super capacitor satisfies the time of needs work after the data transmission terminal power down from the time that the initial value that is full of electricity discharges into minimum, thereby the normal working voltage of long period is provided for data transmission terminal.The storage of electrical energy utilance of super capacitor of the present invention has obtained improving greatly.The super capacitor discharge is more thorough, and storage of electrical energy is fully used, thereby saves the energy more.
Description of drawings
Fig. 1 is based on the power down protection circuit diagram of super capacitor in the prior art;
Fig. 2 is based on the method first embodiment flow chart of a kind of power down protection of the present invention;
Fig. 3 is based on the method second embodiment flow chart of a kind of power down protection of the present invention;
Fig. 4 is based on the equipment first example structure figure of a kind of power down protection of the present invention;
Fig. 5 is based on the equipment second example structure figure of a kind of power down protection of the present invention;
Fig. 6 is based on equipment the 3rd embodiment circuit diagram of a kind of power down protection of the present invention.
Embodiment
For above-mentioned purpose of the present invention, feature and advantage can be become apparent more, the specific embodiment of the present invention is described in detail below in conjunction with accompanying drawing.
Because super capacitor is compared rechargeable battery and is had the following advantages, so utilize super capacitor to replace rechargeable battery to provide power down protection for system.
Because the capacity of super capacitor is very big, is called " battery capacitor " again, has the following advantages:
1. super capacitor can quick charge, and quickly charging battery then can be received infringement.
2. super capacitor can circulate hundreds thousand of times repeatedly, and rechargeable battery has only hundreds of.
3. the super capacitor volume is little, and price is more cheap than rechargeable battery.
Referring to Fig. 2, this figure is the method first embodiment flow chart based on a kind of power down protection of the present invention.
S201: before the data transmission terminal power down, be the rated voltage of super capacitor with the supply voltage step-down.
For example, described supply voltage is 24V.The rated voltage that 24V voltage is reduced to super capacitor is the super capacitor power supply.During the system normal power supply, supply voltage is the super capacitor charging.After system's power down, the super capacitor discharge.
S202: the rated voltage of described super capacitor boosted is the operating voltage of data transmission terminal, is described data transmission terminal power supply.
S203: after the data transmission terminal power down, described super capacitor discharge, the boost in voltage that described super capacitor is discharged is the operating voltage of described data transmission terminal, is described data transmission terminal power supply.
Need to prove that the method for a kind of power down protection provided by the invention can be applied in all power down protections in electric automatization control field.Can select supply voltage, the rated voltage of super capacitor and/or the operating voltage of data transmission terminal according to actual needs.Certainly, according to the capacity of the described super capacitor of selection of time of needs work after the data transmission terminal power down.
The invention provides a kind of method of power down protection, can be the operating voltage of data transmission terminal with the boost in voltage of discharging on the super capacitor when the data transmission terminal power down.Data transmission terminal can operate as normal, and data message and power down warning message are sent to remote control center.The method of power down protection provided by the invention can guarantee when the data transmission terminal power down, needs the time of work after super capacitor has surpassed the data transmission terminal power down from the time that the initial value that is full of electricity discharges into minimum.Thereby provide the operating voltage of long period for data transmission terminal.
Referring to Fig. 3, this figure is the method second embodiment flow chart based on a kind of power down protection of the present invention.
S301: before the data transmission terminal power down, be the rated voltage of super capacitor with the power supply step-down, be the super capacitor power supply by Switching Power Supply.
Described supply voltage is 24V.
Described 24V voltage process Switching Power Supply is reduced to the rated voltage less than the super capacitor of 4.2V.
The embodiment of the invention is preferably reduced to 24V voltage the rated voltage of the super capacitor of 2.3V.
The preferred LM2596-ADJ of described Switching Power Supply, described LM2596-ADJ reduce to the supply voltage of 24V the rated voltage of the super capacitor of 2.3V.
LM2596-ADJ is the switching power source chip of a Adjustable Output Voltage, and the output voltage adjustable range is 1.2V～37V, and can export the 3A maximum load current.
S302: the rated voltage of described super capacitor boosted is the operating voltage of data transmission terminal, is described data transmission terminal power supply.
S303: after the data transmission terminal power down, the super capacitor discharge, the boost in voltage that super capacitor is discharged is the operating voltage of data transmission terminal; Be described data transmission terminal power supply.
Boosting unit boosts the discharge voltage of super capacitor and is the operating voltage of data transmission terminal.
The operating voltage of described data transmission terminal is 4.2V.
Be described in detail when system's power down the method for the described power down protection of the embodiment of the invention below.
During the data transmission terminal operate as normal, super capacitor is charged to rated voltage 2.3V.
During the data transmission terminal power down, the minimum value of the normal voltage that boosting unit can be worked is V
Min=0.7V.
Data transmission terminal can operate as normal minimum voltage be 3.8V.The super capacitor discharge directly is the data transmission terminal power supply in the prior art.When the voltage of super capacitor discharge was lower than 3.8V, data transmission terminal can't operate as normal.Therefore super capacitor from the utilance that rated operational voltage 4.2V discharges into 3.8V only is: (4.2V-3.8V)/and 4.2V=9.5%.
Power-off protection method provided by the invention, super capacitor from the utilance that rated operational voltage 2.3V discharges into the input voltage 0.7V of boosting unit operate as normal is: (2.3V-0.7V)/2.3V=69.6%.
This shows that the storage of electrical energy utilance of super capacitor of the present invention has obtained improving greatly.The super capacitor discharge is more thorough, and storage of electrical energy is fully used, thereby saves the energy more.
Load current 600mA when powering by super capacitor, the capacity 5F of super capacitor, V
Work=2.3V, V
Min=0.7V, C=5F, I=0.6A, the time that the voltage that can get super capacitor discharge satisfies the boosting unit operate as normal is:
t＝C×(V
work-V
min)/I
＝5×(2.3-0.7)/0.6 (1)
＝13.3s
Can get by formula (1), when system's power down, the super capacitor discharge, the time that can make the boosting unit operate as normal is 13.3s.During the boosting unit operate as normal, the discharge voltage of super capacitor can be boosted is the operating voltage of data transmission terminal.Therefore, the time that data transmission terminal can operate as normal also is 13.3s.13.3s enough described data transmission terminal of time system's power down message is transferred to remote monitoring center by GPRS network.Remote monitoring center is taked necessary power down measure.
Need to prove that described super capacitor can be selected different capacity as required.
The rated voltage of described super capacitor can be selected different magnitudes of voltage as required, as long as guarantee the operating voltage less than data transmission terminal.The operating voltage of preference data transmission terminal is 4.2V among the present invention.If the described method of the embodiment of the invention is applied in the other system, promptly not system's power down information to be transferred to remote monitoring center, but adopt other communication apparatus to transmit by GPRS network, for example pass through CAN bus etc.At this moment, the operating voltage of data transmission terminal can be selected other magnitudes of voltage.
S304: by linear power supply the operating voltage of data transmission terminal being converted to the operating voltage of CPU, is the CPU power supply.
The operating voltage of described CPU comprises 3.3V and two kinds of voltages of 1.8V.
Described 3.3V is the IO power supply of CPU.
Described 1.8V is the kernel power supply of CPU.
When system's power down, CPU is used for preserving current data message.
The method of the described a kind of power down protection of the embodiment of the invention when system's power down, with the boost in voltage of super capacitor discharge, is supplied with CPU and data transmission terminal.CPU is stored in ferroelectric memory or E2PROM the inside with the relevant information of current system works.After re-powering, CPU reads the system information of power down at that time, the working state of system when recovering power down.Data transmission terminal has the sufficiently long time that the information of system's power down is reported to the police to remote monitoring center.Remote monitoring center can be in time to system power down take measures necessary.
Based on the method for above-mentioned a kind of power down protection, the embodiment of the invention also provides a kind of equipment of power down protection, describes described equipment in detail below in conjunction with accompanying drawing.
Referring to Fig. 4, this figure is the equipment first example structure figure based on a kind of power down protection of the present invention.
The invention provides the equipment that a kind of power down is reported to the police, comprise pressure unit 401, super capacitor 402 and boosting unit 403.
Described pressure unit 401, be used for data transmission terminal 404 power down before, be the rated voltage of super capacitor with the supply voltage step-down.
Described super capacitor 402 is used for store electrical energy.
For example, described supply voltage is 24V.The rated voltage that 24V voltage is reduced to super capacitor is the super capacitor power supply.During the system normal power supply, supply voltage is the super capacitor charging.After system's power down, the super capacitor discharge.
Described boosting unit 403, be used for data transmission terminal 404 power down before, the rated voltage of described super capacitor 402 boosted is the operating voltage of described data transmission terminal 404, is described data transmission terminal 404 power supplies; After also being used for data transmission terminal 404 power down, described super capacitor 402 discharges, the boost in voltage that described super capacitor 402 is discharged is the operating voltage of described data transmission terminal 404, is described data transmission terminal 404 power supplies.
Need to prove that the equipment of a kind of power down protection provided by the invention, described equipment can be applied on the power down protections all in the electric automatization control field.Can select supply voltage, the rated voltage voltage of super capacitor and/or the operating voltage of data transmission terminal according to actual needs.Certainly, select the capacity of described super capacitor according to the operating time of needs after the data transmission terminal power down.
Described equipment can be when data transmission terminal 404 power down, and the boost in voltage that super capacitor 402 is discharged is the operating voltage of data transmission terminal 404.Thereby data transmission terminal 404 can operate as normal, and data message and power down warning message are sent to remote control center.The equipment of power down protection provided by the invention can guarantee when data transmission terminal 404 power down, needs the time of work after super capacitor 402 has surpassed data transmission terminal 404 power down from the time that the initial value that is full of electricity discharges into minimum.Thereby provide the operating voltage of long period for data transmission terminal 404.
Equipment utilization of the present invention the super capacitor capacity big, the advantage that volume is little, and with the boost in voltage after the super capacitor discharge, be data transmission terminal 404 power supplies can make the long time of data transmission terminal 404 work.
Referring to Fig. 5, this figure is the equipment second example structure figure based on a kind of power down protection of the present invention.
The difference of present device second embodiment and equipment first embodiment is to have increased linear power supply 501 and CPU502.
Need to prove that pressure unit described in the present embodiment 401 adopts Switching Power Supply 401a.
Described supply voltage is 24V.
Described Switching Power Supply 401a reduces to rated voltage less than the super capacitor of 4.2V with described 24V voltage.
The embodiment of the invention is preferably reduced to 24V voltage the rated voltage of the super capacitor of 2.3V.
Need to prove that can select the rated voltage of super capacitor according to the actual needs of system, the rated voltage of super capacitor needs only the operating voltage less than data transmission terminal.
The preferred LM2596-ADJ of described Switching Power Supply 401a, described LM2596-ADJ will be the rated voltage of the super capacitor of 2.3V with the supply voltage of 24V.
LM2596-ADJ is the switching power source chip of a Adjustable Output Voltage, and the output voltage adjustable range is 1.2V～37V, and can export the 3A maximum load current.
When system's power down, super capacitor discharges, and can make the time of the about 13.3s of described data transmission terminal 404 operate as normal.13.3s enough described data transmission terminal 404 of time system's power down message is transferred to remote monitoring center by GPRS network.Remote monitoring center is taked necessary power down measure.
Data transmission terminal can operate as normal minimum voltage be 3.8V.The super capacitor discharge directly is the data transmission terminal power supply in the prior art.When the voltage of super capacitor discharge was lower than 3.8V, data transmission terminal can't operate as normal.Therefore super capacitor from the utilance that rated operational voltage 4.2V discharges into 3.8V only is: (4.2V-3.8V)/and 4.2V=9.5%.
Power down protection equipment provided by the invention, super capacitor from the utilance that rated operational voltage 2.3V discharges into the input voltage 0.7V of boosting unit operate as normal is: (2.3V-0.7V)/2.3V=69.6%.
This shows that the storage of electrical energy utilance of super capacitor of the present invention has obtained improving greatly.The super capacitor discharge is more thorough, and storage of electrical energy is fully used, thereby saves the energy more.
Need to prove that described super capacitor 402 can be selected different capacity as required.
The operating voltage of preference data transmission terminal is 4.2V among the present invention, because the operating voltage of GPRS module 404a is 4.2V.If the described equipment of the embodiment of the invention is applied in the other system, promptly not system's power down information to be transferred to remote monitoring center, but adopt other communication apparatus to transmit by GPRS network, for example pass through CAN bus etc.At this moment, the operating voltage of data transmission terminal can be selected other magnitudes of voltage.
Described linear power supply 501 is converted to the operating voltage of CPU502 with the operating voltage of data transmission terminal, is the CPU502 power supply.
The operating voltage of described CPU502 comprises 3.3V and two kinds of voltages of 1.8V.
Described 3.3V is the IO power supply of CPU502.
Described 1.8V is the kernel power supply of CPU502.
When system's power down, CPU502 is used for preserving current data message.
The equipment of the described a kind of power down protection of the embodiment of the invention when system's power down, boosts the discharge voltage of super capacitor 402, is CPU502 and GPRS module 404a power supply.CPU502 is stored in ferroelectric memory or E2PROM the inside with the relevant information of current system works.After re-powering, CPU502 reads the system information of power down at that time, the working state of system when recovering power down.GPRS module 404a has the sufficiently long time by GPRS network the information of system's power down to be reported to the police to remote monitoring center.Remote monitoring center can be in time to system power down take measures necessary.
Describe the equipment of power down protection of the present invention in detail below in conjunction with physical circuit figure.
Referring to Fig. 6, this figure is equipment the 3rd embodiment circuit diagram based on a kind of power down protection of the present invention.
As shown in Figure 6, U1 is described Switching Power Supply 401a.U12 is described boosting unit 403.E2 is described super capacitor 402.
Switching Power Supply 401a chip is selected LM2596-ADJ for use, and LM2596-ADJ is the switching power source chip of a Adjustable Output Voltage, and the output voltage adjustable range is 1.2V～37V, and can export the 3A maximum load current, and the output voltage computing formula is as follows:
V wherein
Ref=1.23V selects R here
1=5.1K, R
2=4.7K, V
Out=1.23 * (1+4.7/5.1), V then
Out=2.3V.
Super capacitor E2 is connected on after the output voltage of Switching Power Supply 401a, as shown in Figure 6.
U12 is a boosting unit, and this circuit prior is selected the master chip of MAX1708EEE as boosting unit.The input voltage range of this chip is 0.7～5V.The Adjustable Output Voltage of MAX1708EEE, voltage-regulation scope are 2.5V～5V.
Output voltage adjusting computing formula is as follows:
By formula (3) as can be seen, regulate resistance R
4And R
5Can regulate the scope of boosting unit output voltage.
Select V in the embodiment of the invention
FB=1.24V, R
4=3.6K, R
5=1.5K, V
Out=1.24 * (1+3.6/1.5), V then
Out=4.2V.
Need to prove, can select the circuit or the master chip of boosting unit according to the practical application needs.Thereby select to obtain the input voltage and the output voltage of different boosting units.
The described power down protection equipment of the embodiment of the invention mainly comprises super capacitor 402 and boosting unit 403.
When system's power down, super capacitor 402 can make the operate as normal 13.3s of system through overdischarge, and enough GPRS module 404a by GPRS network, transfer to remote monitoring center with power down information.
If during system's operate as normal, the equipment of power down protection of the present invention can satisfy the voltage request of system's operate as normal.
The equipment utilization of power down protection of the present invention big the and little characteristics of volume of super capacitor energy-storage, convenient and practical.
The above only is preferred embodiment of the present invention, is not the present invention is done any pro forma restriction.Though the present invention discloses as above with preferred embodiment, yet be not in order to limit the present invention.Any those of ordinary skill in the art, do not breaking away under the technical solution of the present invention scope situation, all can utilize the method and the technology contents of above-mentioned announcement that technical solution of the present invention is made many possible changes and modification, or be revised as the equivalent embodiment of equivalent variations.Therefore, every content that does not break away from technical solution of the present invention, all still belongs in the scope of technical solution of the present invention protection any simple modification, equivalent variations and modification that above embodiment did according to technical spirit of the present invention.
Claims (10)
1, a kind of method of power down protection is characterized in that, may further comprise the steps:
Before the data transmission terminal power down, be the rated voltage of super capacitor with the supply voltage step-down;
The rated voltage of described super capacitor boosted is the operating voltage of data transmission terminal, is described data transmission terminal power supply;
After the data transmission terminal power down, described super capacitor discharge, the boost in voltage that described super capacitor is discharged is the operating voltage of described data transmission terminal, is described data transmission terminal power supply.
2, method according to claim 1 is characterized in that, described is that the rated voltage of super capacitor is specially with the supply voltage step-down: by Switching Power Supply is the rated voltage of described super capacitor with the supply voltage step-down.
3, method according to claim 1 is characterized in that, also comprises: be described CPU power supply after the operating voltage of described data transmission terminal being converted to the operating voltage of CPU by linear power supply.
4, method according to claim 3 is characterized in that, the operating voltage of described CPU comprises 3.3V and 1.8V, and 3.3V is the IO power supply of CPU, and 1.8V is the kernel power supply of CPU.
5, according to claim 1 or 4 described methods, it is characterized in that the operating voltage of described data transmission terminal is 4.2V; The rated voltage of described super capacitor is less than 4.2V.
6, a kind of equipment of power down protection is characterized in that, comprises pressure unit, super capacitor and boosting unit;
Described pressure unit, be used for the data transmission terminal power down before, be the rated voltage of super capacitor with the supply voltage step-down;
Described super capacitor is used for store electrical energy;
Described boosting unit, be used for the data transmission terminal power down before, the rated voltage of described super capacitor boosted is the operating voltage of described data transmission terminal, is described data transmission terminal power supply; After also being used for the data transmission terminal power down, described super capacitor discharge, the boost in voltage that described super capacitor is discharged is the operating voltage of described data transmission terminal, is described data transmission terminal power supply.
7, equipment according to claim 6 is characterized in that, described pressure unit is a Switching Power Supply.
8, equipment according to claim 6 is characterized in that, described equipment also comprises linear power supply, is used for the operating voltage of data transmission terminal is converted to the operating voltage of CPU, is the CPU power supply.
9, equipment according to claim 6 is characterized in that, the operating voltage of described CPU comprises 3.3V and 1.8V, and 3.3V is the IO power supply of CPU, and 1.8V is the kernel power supply of CPU.
10, according to claim 6 or 9 described equipment, it is characterized in that the operating voltage of described data transmission terminal is 4.2V, the rated voltage of described super capacitor is less than 4.2V.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008101784167A CN101521410B (en) | 2008-11-24 | 2008-11-24 | Method and device for power failure safeguard |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008101784167A CN101521410B (en) | 2008-11-24 | 2008-11-24 | Method and device for power failure safeguard |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101521410A true CN101521410A (en) | 2009-09-02 |
| CN101521410B CN101521410B (en) | 2010-12-22 |
Family
ID=41081837
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008101784167A Expired - Fee Related CN101521410B (en) | 2008-11-24 | 2008-11-24 | Method and device for power failure safeguard |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101521410B (en) |
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101860200A (en) * | 2010-04-27 | 2010-10-13 | 华为技术有限公司 | Power-down retaining circuit, method and power supply system |
| CN102074996A (en) * | 2011-01-26 | 2011-05-25 | 江苏斯菲尔电气股份有限公司 | Voltage shock avoiding circuit |
| CN102111011A (en) * | 2011-02-28 | 2011-06-29 | 华为技术有限公司 | Power failure maintaining method and circuit |
| CN103683885A (en) * | 2013-12-12 | 2014-03-26 | 安伏（苏州）电子有限公司 | Device for preventing electric current backward flowing and output capacitor discharging |
| CN104218827A (en) * | 2014-08-25 | 2014-12-17 | 国家电网公司 | Direct-current stabilized power supply circuit with circuit protection module |
| CN105866527A (en) * | 2016-03-18 | 2016-08-17 | 武汉盛帆电子股份有限公司 | Intelligent electric energy meter with power failure event reporting function and application system thereof |
| CN106410960A (en) * | 2016-12-12 | 2017-02-15 | 湖南威胜信息技术有限公司 | Power supply circuit, power supply method and power-consumption information acquisition terminal manufactured thereby |
| CN106410974A (en) * | 2016-12-13 | 2017-02-15 | 苏州瑞铬优电子科技有限公司 | Two-stage energy storage system used for wireless sensor node |
| CN109104091A (en) * | 2018-08-13 | 2018-12-28 | 深圳市普威技术有限公司 | A kind of power circuit and power supply adaptor |
| CN111157780A (en) * | 2019-12-28 | 2020-05-15 | 杭州拓深科技有限公司 | Power failure alarm device and control method thereof |
| CN112313601A (en) * | 2020-04-24 | 2021-02-02 | 上海商汤临港智能科技有限公司 | Vehicle, visual field controller, video data processing method, apparatus and medium |
| CN113626257A (en) * | 2021-07-20 | 2021-11-09 | 烽火通信科技股份有限公司 | Method, device and equipment for protecting and recovering service of Internet of things terminal in case of power failure |
| US11472668B2 (en) | 2018-11-14 | 2022-10-18 | Otis Elevator Company | Elevator alarm systems |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1601566A (en) * | 2004-09-30 | 2005-03-30 | 甘国工 | Finance tax cash register |
| CN2917066Y (en) * | 2006-04-04 | 2007-06-27 | 南京熊猫电子股份有限公司 | Power-off protection and super-capacitance charging/discharging protector for tax control equipment |
| CN101286655B (en) * | 2008-05-22 | 2011-08-31 | 中国科学院电工研究所 | Complementary power supply system of wind and photovoltaic power generation based on super capacitor power storage |
-
2008
- 2008-11-24 CN CN2008101784167A patent/CN101521410B/en not_active Expired - Fee Related
Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101860200A (en) * | 2010-04-27 | 2010-10-13 | 华为技术有限公司 | Power-down retaining circuit, method and power supply system |
| CN102074996A (en) * | 2011-01-26 | 2011-05-25 | 江苏斯菲尔电气股份有限公司 | Voltage shock avoiding circuit |
| CN102111011A (en) * | 2011-02-28 | 2011-06-29 | 华为技术有限公司 | Power failure maintaining method and circuit |
| CN103683885A (en) * | 2013-12-12 | 2014-03-26 | 安伏（苏州）电子有限公司 | Device for preventing electric current backward flowing and output capacitor discharging |
| CN103683885B (en) * | 2013-12-12 | 2017-02-15 | 安伏（苏州）电子有限公司 | Device for preventing electric current backward flowing and output capacitor discharging |
| CN104218827A (en) * | 2014-08-25 | 2014-12-17 | 国家电网公司 | Direct-current stabilized power supply circuit with circuit protection module |
| CN105866527A (en) * | 2016-03-18 | 2016-08-17 | 武汉盛帆电子股份有限公司 | Intelligent electric energy meter with power failure event reporting function and application system thereof |
| CN106410960A (en) * | 2016-12-12 | 2017-02-15 | 湖南威胜信息技术有限公司 | Power supply circuit, power supply method and power-consumption information acquisition terminal manufactured thereby |
| CN106410974A (en) * | 2016-12-13 | 2017-02-15 | 苏州瑞铬优电子科技有限公司 | Two-stage energy storage system used for wireless sensor node |
| CN106410974B (en) * | 2016-12-13 | 2018-11-02 | 苏州瑞铬优电子科技有限公司 | A kind of two-stage energy storage system for wireless sensor node |
| CN109104091A (en) * | 2018-08-13 | 2018-12-28 | 深圳市普威技术有限公司 | A kind of power circuit and power supply adaptor |
| US11472668B2 (en) | 2018-11-14 | 2022-10-18 | Otis Elevator Company | Elevator alarm systems |
| CN111157780A (en) * | 2019-12-28 | 2020-05-15 | 杭州拓深科技有限公司 | Power failure alarm device and control method thereof |
| CN112313601A (en) * | 2020-04-24 | 2021-02-02 | 上海商汤临港智能科技有限公司 | Vehicle, visual field controller, video data processing method, apparatus and medium |
| CN112313601B (en) * | 2020-04-24 | 2023-07-07 | 上海商汤临港智能科技有限公司 | Vehicle, vision domain controller, video data processing method, apparatus and medium |
| CN113626257A (en) * | 2021-07-20 | 2021-11-09 | 烽火通信科技股份有限公司 | Method, device and equipment for protecting and recovering service of Internet of things terminal in case of power failure |
| CN113626257B (en) * | 2021-07-20 | 2024-01-30 | 烽火通信科技股份有限公司 | Method, device and equipment for protecting and recovering service under power failure of Internet of things terminal |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101521410B (en) | 2010-12-22 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101521410B (en) | Method and device for power failure safeguard | |
| US20080100143A1 (en) | Power management system with charger/boost controller | |
| US9825478B2 (en) | Method for supplying power to a load within a portable electronic device | |
| JP5490834B2 (en) | Charge / feed device, charge / feed management device, energy management system, and charge / feed management method | |
| JP5396549B1 (en) | Charge / feed device, charge / feed management device, energy management system, and charge / feed management method | |
| CN109245085A (en) | DC energy storage backup power supply and control method with peak load shifting function | |
| KR20200048913A (en) | Stand-alone household energy storage system based on waste battery | |
| CN105313718A (en) | Vehicle-mounted storage battery charging equipment, system and method | |
| JP2013021778A (en) | Control device, power storage system, electronic apparatus, electric vehicle, and electric power system | |
| CN101237152A (en) | Electronic device and system for DC voltage conversion | |
| CN101841184A (en) | Power supply switching device and method thereof | |
| CN205113046U (en) | Vehicle -mounted storage battery battery charging outfit and system | |
| CN102593925A (en) | Power battery pack voltage transformation system and transformation method | |
| WO2013122073A1 (en) | Power charging and supplying device, power charging and supplying management device, energy management system, and power charging and supplying management method | |
| CN106886273A (en) | A kind of power-down protection circuit | |
| CN112564268B (en) | Internet of things tracker terminal equipment | |
| JP2002315228A (en) | Power supply apparatus | |
| CN1203385C (en) | Power supply management system for palm equipment | |
| CN205141819U (en) | Electric power redundancy system | |
| JP2015070637A (en) | Power supply system | |
| CN209119812U (en) | DC energy storage backup power supply with peak load shifting function | |
| CN104218665A (en) | A power supply apparatus and a method for switching the same | |
| CN211830347U (en) | Concentrator | |
| CN103986200A (en) | Device and method for optimizing use of an NVDC charger | |
| US11038368B2 (en) | Method of controlling power supply of caravan and power control device of caravan |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20101222 Termination date: 20151124 |