CN105449829A - Power supply protection circuit - Google Patents
Power supply protection circuit Download PDFInfo
- Publication number
- CN105449829A CN105449829A CN201510962095.XA CN201510962095A CN105449829A CN 105449829 A CN105449829 A CN 105449829A CN 201510962095 A CN201510962095 A CN 201510962095A CN 105449829 A CN105449829 A CN 105449829A
- Authority
- CN
- China
- Prior art keywords
- power
- circuit
- power supply
- protection
- power source
- 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.)
- Pending
Links
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
- H02J9/04—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
Landscapes
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The invention discloses a power supply protection circuit, comprising a main power supply, a power supply converting circuit, a protected circuit, a power failure protection power supply and a power supply switching circuit; one side of the power supply switching circuit is respectively connected with the main power supply and the power failure protection power supply; the other side is respectively connected with the power supply converting circuit and the protected circuit; the power supply converting circuit is also connected with the protected circuit; the power supply converting circuit is used for switching a power supply circuit to the power failure protection power supply and sending a power supply switching notice to the protected circuit when the main power supply is detected to be in power failure; the power supply protection circuit of the invention prevents the system from being influenced by power failure resulted from installation of the main power supply and poor contact of an electrode, protects the normal work of the system circuit, promotes the stability and performance of the system and realizes low cost.
Description
Technical field
The present invention relates to the communications field, particularly relate to a kind of power protecting circuit.
Background technology
Handheld device adopts powered battery usually, and lowered in field environment hand-held uses, and the transducer integrated by handheld device and display device complete measurement, detecting, exploration task and man-machine interaction, possess wide application prospect.
The general integrated image sensor of handheld device (as infrared sensor, visible light sensor), range sensor (as laser), geographical coordinate transducer (as the Big Dipper, GPS), attitude transducer (as electronic compass) and display device (as OLED display screen).Therefore the kind of handheld device integrated sensor is many, integrated level is high, has higher requirement to the stability of system-level power supply
Supply power mode employing battery module (battery being encapsulated as a whole) that handheld device is conventional, electrode contact is adopted to power, the advantage done like this is that structural design is comparatively easy, electrode contact tightness easily ensures, can meet the adaptability requirement about impact shock in army's mark.But it is lower that this supply power mode implements flexibility, be in particular in that battery module volume is comparatively large, and need battery position in storehouse and the charging device of design specialized, cannot use if battery breaks down, then need to change whole battery module, maintenance cost is higher.
In order to improve above problem and meet the requirement of user side, the supply power mode of handheld device transfers to and directly adopts battery to power, or takes the design of battery module of detachable battery core, promotes flexibility, versatility and maintainability.The problem brought like this is the difficulty improving structural design, except will ensureing the tightness of electrode contact, also will ensure the installation stability of battery.As shown in Figure 1, be circuit system schematic diagram under existing supply power mode.Under this supply power mode, if battery is installed and electrode contact goes wrong, the adaptability about impact shock in army's mark just may not meet, and occurs power down phenomenon.
Summary of the invention
The invention provides a kind of power protecting circuit, in order to solve in prior art handheld device adopt battery to power time, easily because of impact shock power down, thus the power supply instability problem caused.
Concrete, power protecting circuit provided by the invention, comprising: main power source, power-switching circuit, protected circuit, power-off protection power supply and power supply switch circuit;
Described power supply switch circuit side is connected with power-off protection power supply with described main power source respectively, and opposite side is connected with protected circuit with described power-switching circuit respectively; Described power-switching circuit is also connected with described protected circuit;
Described power supply switch circuit, for when described main power source power down being detected, is switched to described power-off protection power supply by supply line, and sends electrical source exchange notice to described protected circuit.
Alternatively, power protecting circuit of the present invention, also comprises: charging circuit;
Described charging circuit, one end connects described main power source, and the other end connects described power-off protection power supply, for when the non-power down of described main power source, with described main power source for feeder ear is described power-off protection power source charges.
Alternatively, in power protecting circuit of the present invention, described protected circuit, for after receiving electrical source exchange notice, carries out power-off preparation.
Alternatively, in power protecting circuit of the present invention, described power-off prepares to comprise to preserve current system data.
Alternatively, in power protecting circuit of the present invention, described power supply switch circuit; also for during described power-off protection Power supply; if detect, described main power source restores electricity, then by supply line's switchback to described main power source, and to described protected circuit send power supply switchback notice.
Beneficial effect of the present invention is as follows:
The present invention, when main power source power down, adopts stand-by power supply to substitute the main power source of power down to system power supply, and notifies protected circuit, and guarantee system protected circuit when there is burst power-off has time enough for power down process.Prevent because main power source installation and electrode loose contact occur that power down has an impact to system, protection system circuit normally works, and the stability of system and performance is promoted, and realizes with low cost.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is circuit system schematic diagram under existing supply power mode;
Fig. 2 is the circuit theory diagrams of a kind of power protecting circuit provided by the invention;
Fig. 3 is the another circuit theory diagrams of a kind of power protecting circuit provided by the invention;
Fig. 4 is the workflow diagram that power protecting circuit of the present invention realizes power-off protection.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
In order to solve because safeguarding the problem produced, occur the phenomenon because of impact shock power down in system works, the embodiment of the present invention provides a kind of power protecting circuit, for protecting Important Circuit (i.e. " protected circuit ") when happening suddenly power-off.Important Circuit re-powers the circuit of meeting initiating system operating state exception after comprising signal processing circuit or burst power-off.
Power protecting circuit described in the present embodiment; automatically carry out; do not need user to arrange or operate can realize; when main power source power down; stand-by power supply (or energy-storage travelling wave tube) is adopted to substitute the main power source of power down to system power supply; there is provided the power-on time of system requirements, guarantee system protected circuit when there is burst power-off has time enough for power down process, and possesses stable operating state when restoring electricity.
As shown in Figure 2, the power protecting circuit described in the present embodiment specifically comprises: main power source, power-off protection power supply, power supply switch circuit, power-switching circuit and protected circuit.Wherein:
Power supply switch circuit side is connected with power-off protection power supply with main power source respectively, and opposite side is connected with protected circuit with power-switching circuit respectively; Power-switching circuit is also connected with protected circuit.
Wherein, power supply switch circuit when the non-power down of main power source, the supply line between conducting main power source and power-switching circuit; When main power source power down being detected, supply line is switched to power-off protection power supply (the supply line's conducting by between power-off protection power supply and power-switching circuit), and sends electrical source exchange notice to protected circuit.Protected circuit, after receiving electrical source exchange notice, carries out power-off preparation.Wherein, power-off prepares to comprise to preserve current system data.
Further, in the embodiment of the present invention, power supply switch circuit, during described power-off protection Power supply, if detect, described main power source restores electricity, then supply line is switched to described main power source, and sends power supply switchback notice to described protected circuit.
In another embodiment of the invention, power supply switch circuit also can realize the transmission of notification message by power-switching circuit.
In a preferred embodiment of the present invention, power protecting circuit also comprises: charging circuit;
As shown in Figure 3, described charging circuit, one end connects described main power source, and the other end connects described power-off protection power supply, for when the non-power down of described main power source, with described main power source for feeder ear is described power-off protection power source charges.
Under this embodiment; the high energy-storage travelling wave tube of power-off protection power acquisition is used for storage of electrical energy, and charged by charging circuit when system powers up for the first time, filling time is controlled; larger power consumption is no longer included after being full of, therefore less on system-level continuous working period impact.
When power down appears in main power source, by the circuit switching of power supply switch circuit, power-off protection power supply takes over main power source to system power supply, and power supply switch circuit notifies protected circuit simultaneously, makes protected circuit can carry out emergency management process after power-off.If in power-off protection Power supply guard time; main power source restores electricity; then notify protected circuit; normal work can be continued; if main power source fails to recover, then when power-off protection power depletion, system safety power down; even if at this moment main power source restores electricity, system does not also return normal operating conditions.
The flow process that the power protecting circuit provided below in conjunction with accompanying drawing 4 pairs of embodiment of the present invention realizes power-off protection is described.
Step S401, when powering on for the first time, power supply switch circuit is switched to main power source, makes main power source be that protected circuit is powered;
Step S402, main power source by charging circuit to power-off protection power source charges;
Step S403, when there is main power source power down phenomenon, power supply switch circuit is switched to power-off protection power supply, makes power-off protection power supply be that protected circuit is powered, and meanwhile notifies that protected circuit prepares to take emergency measures;
Step S404, within the power supply protection time of power-off protection power supply, if main power source recovers, then power supply switch circuit is switched to main power source, and meanwhile main power source supplements electricity to protective circuit;
Step S405, within the power supply protection time of power-off protection power supply, if main power source does not recover, then system safety power down, after power down, main power source recovers also no longer to recover normal operating conditions.
It is worth mentioning that; in the present invention, power supply switch circuit and power-switching circuit are two independently circuit; two circuit also can be combined into a circuit by those skilled in the art; such as can adjust power-switching circuit, make the function that it possesses electrical source exchange function and gives notice to protected circuit.
In a word, the foregoing is only preferred embodiment of the present invention, be not intended to limit protection scope of the present invention.Within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (5)
1. a power protecting circuit, comprises main power source, power-switching circuit and protected circuit, it is characterized in that, also comprise: power-off protection power supply and power supply switch circuit;
Described power supply switch circuit side is connected with power-off protection power supply with described main power source respectively, and opposite side is connected with protected circuit with described power-switching circuit respectively; Described power-switching circuit is also connected with described protected circuit;
Described power supply switch circuit, for when described main power source power down being detected, is switched to described power-off protection power supply by supply line, and sends electrical source exchange notice to described protected circuit.
2. power protecting circuit as claimed in claim 1, is characterized in that, also comprise: charging circuit;
Described charging circuit, one end connects described main power source, and the other end connects described power-off protection power supply, for when the non-power down of described main power source, with described main power source for feeder ear is described power-off protection power source charges.
3. power protecting circuit as claimed in claim 1 or 2, is characterized in that, described protected circuit, for after receiving electrical source exchange notice, carries out power-off preparation.
4. power protecting circuit as claimed in claim 3, is characterized in that, described power-off prepares to comprise to preserve current system data.
5. power protecting circuit as claimed in claim 1 or 2; it is characterized in that; described power supply switch circuit; also for during described power-off protection Power supply; if detect, described main power source restores electricity; then by supply line's switchback to described main power source, and to described protected circuit send power supply switchback notice.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510962095.XA CN105449829A (en) | 2015-12-21 | 2015-12-21 | Power supply protection circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510962095.XA CN105449829A (en) | 2015-12-21 | 2015-12-21 | Power supply protection circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105449829A true CN105449829A (en) | 2016-03-30 |
Family
ID=55559735
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510962095.XA Pending CN105449829A (en) | 2015-12-21 | 2015-12-21 | Power supply protection circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105449829A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110609596A (en) * | 2018-06-15 | 2019-12-24 | 慧荣科技股份有限公司 | Development system and production method of data storage device |
| CN114629227A (en) * | 2022-03-01 | 2022-06-14 | 中金金融认证中心有限公司 | Device and method for power-off protection of electric equipment |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201113549Y (en) * | 2007-08-29 | 2008-09-10 | 新巨企业股份有限公司 | Electric power redundancy system |
| CN201750208U (en) * | 2010-09-02 | 2011-02-16 | 南京财经大学 | Double-power-supply automatic shifting circuit of embedded device with standby storage battery |
| US20110119506A1 (en) * | 2009-11-19 | 2011-05-19 | Hon Hai Precision Industry Co., Ltd. | Powered device |
| CN102893491A (en) * | 2010-05-13 | 2013-01-23 | 伊顿公司 | Uniterruptible power supply systems and methods supporting high-efficiency bypassed operation with a variably available power source |
| CN103187789A (en) * | 2011-12-30 | 2013-07-03 | 比亚迪股份有限公司 | Quick uninterrupted power system and control method of quick uninterrupted power system |
-
2015
- 2015-12-21 CN CN201510962095.XA patent/CN105449829A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201113549Y (en) * | 2007-08-29 | 2008-09-10 | 新巨企业股份有限公司 | Electric power redundancy system |
| US20110119506A1 (en) * | 2009-11-19 | 2011-05-19 | Hon Hai Precision Industry Co., Ltd. | Powered device |
| CN102893491A (en) * | 2010-05-13 | 2013-01-23 | 伊顿公司 | Uniterruptible power supply systems and methods supporting high-efficiency bypassed operation with a variably available power source |
| CN201750208U (en) * | 2010-09-02 | 2011-02-16 | 南京财经大学 | Double-power-supply automatic shifting circuit of embedded device with standby storage battery |
| CN103187789A (en) * | 2011-12-30 | 2013-07-03 | 比亚迪股份有限公司 | Quick uninterrupted power system and control method of quick uninterrupted power system |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110609596A (en) * | 2018-06-15 | 2019-12-24 | 慧荣科技股份有限公司 | Development system and production method of data storage device |
| CN110609596B (en) * | 2018-06-15 | 2022-11-15 | 慧荣科技股份有限公司 | Development system and production method of data storage device |
| CN114629227A (en) * | 2022-03-01 | 2022-06-14 | 中金金融认证中心有限公司 | Device and method for power-off protection of electric equipment |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN204129120U (en) | A kind of lightning monitoring system | |
| CN201270416Y (en) | Reverse connection protection circuit | |
| CN109696599A (en) | External capacitive short-circuit detecting circuit and detection method for battery protection chip | |
| CN105449829A (en) | Power supply protection circuit | |
| CN103839384A (en) | Intelligent fuel gas leakage alarm system | |
| KR102367690B1 (en) | A system for preventing electricshock by leakage current | |
| CN205377437U (en) | Electric power protective circuit | |
| CN104065437A (en) | Anti-power-supply-interruption wireless early-warning broadcast main station | |
| CN105006885A (en) | Independently-controlled earth leakage protection project management service system | |
| CN202333070U (en) | Backup battery activation starting device | |
| CN210181787U (en) | Fire hydrant remote data acquisition device and fire hydrant | |
| CN205004747U (en) | Automatic female two electrical power generating system that ally oneself with protection in area | |
| CN206575219U (en) | A kind of unattended station seismic instrument intelligent power management system | |
| CN203205846U (en) | Storage battery protection circuit | |
| CN104966393A (en) | Sensor data transmitting-receiving device based on internet of things | |
| RU2486289C2 (en) | Device for cathodic protection with self-contained power supply | |
| CN215121206U (en) | Electronic monument positioning sensing terminal for Beidou short messages and Internet of things | |
| CN101719654A (en) | Novel design of power failure warning of power system | |
| CN212162911U (en) | Intelligent integrated UPS (uninterrupted Power supply) | |
| CN110047235A (en) | A kind of anti-theft positioning alarming system for cathodic protection test pile | |
| CN210803689U (en) | Power supply power failure detection circuit | |
| CN221126935U (en) | Position indication mark power module | |
| CN107769168A (en) | A kind of arc light protecting system | |
| CN204009076U (en) | A kind of beacon receiver | |
| CN215118951U (en) | Improved disposable lithium battery |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20160330 |