CN204633413U - A kind of Time-delay power supply unit of battery supply set - Google Patents
A kind of Time-delay power supply unit of battery supply set Download PDFInfo
- Publication number
- CN204633413U CN204633413U CN201520365262.8U CN201520365262U CN204633413U CN 204633413 U CN204633413 U CN 204633413U CN 201520365262 U CN201520365262 U CN 201520365262U CN 204633413 U CN204633413 U CN 204633413U
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- embedded system
- power
- microcontroller
- switch
- power supply
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Abstract
The utility model is a kind of Time-delay power supply unit of battery supply set, comprises the main power switch and Chang Kai gate-controlled switch that are connected with battery respectively; Main power switch is connected with embedded system by one way conducting device; Often open gate-controlled switch to be connected with microcontroller with embedded system respectively; Also comprising an end is connected between main power switch and one way conducting device, the power sense circuit that the other end is connected with microcontroller; Microcontroller respectively with often open gate-controlled switch and embedded system signal is connected.Effectively can control the power supply supply of embedded system, guarantee the rear power-off of embedded system shutdown, avoid the unreliability of embedded system, avoid the system data loss because unexpected power-off may cause, read-write is abnormal, the even generation of operating system crash issue.After power-off, do not expend any electric energy, equipment can be placed relatively for a long time, need not charge the short time.
Description
Technical field
The utility model relates to a kind of Time-delay power supply unit, is mainly used in the time delay power supply protection of powered battery embedded device.
Background technology
In vehicle electronics and battery powered mechanical control equipment, general simple single-chip microcomputer or the PLC of adopting controls, and system is closed suddenly electricity and can not be impacted equipment operation, re-powers and can work on.But, current control system becomes increasingly complex, simple single-chip microcomputer or PLC can not meet complicated functional requirement, have some systems to adopt microcomputer to control, cost is high, and needs to increase UPS back-up source, prevent unexpected power-off, power-off after the necessary software shutdown of system, along with the development of embedded system, microminiaturized embedded device more and more uses in a device.Embedded device generally adopts NandFlash as memory device, operation system, due to the difference of operating system read-write mechanism, after system also needs to be shut down by software, could power-off, the unexpected power-off of system may cause loss of data, even read and write exception, cause operating system to collapse.
Utility model content
Technical problem to be solved in the utility model is, provides a kind of Time-delay power supply unit of battery supply set, and after user turns off power switch, can maintain system power supply until software systems shutdown, last thoroughly cutting system is powered.
In order to solve the problems of the technologies described above, the utility model have employed following technical scheme.
A Time-delay power supply unit for battery supply set, comprises battery, and embedded system and microcontroller, is characterized in that: also comprise the main power switch and Chang Kai gate-controlled switch that are connected with battery respectively; Main power switch is connected with embedded system by one way conducting device; Often open gate-controlled switch to be connected with microcontroller with embedded system respectively; Also comprising an end is connected between main power switch and one way conducting device, the power sense circuit that the other end is connected with microcontroller; Microcontroller respectively with often open gate-controlled switch and embedded system signal is connected.
Good effect of the present utility model is:
The utility model can control the power supply supply of embedded system effectively, guarantee the rear power-off of embedded system shutdown, avoid the unreliability of embedded system, avoid the system data loss because unexpected power-off may cause, read-write is abnormal, the even generation of operating system crash issue.
Be different from the mode adopting microprocessor controls embedded system power supply, after the utility model power-off, do not expend any electric energy, equipment can be placed relatively for a long time, need not charge the short time.
Accompanying drawing explanation
Fig. 1 is structure of the present utility model and operation principle schematic diagram;
Fig. 2 is the circuit theory diagrams that the utility model often drives gate-controlled switch and microcontroller.
Embodiment
The utility model is further illustrated below in conjunction with the drawings and specific embodiments.
As shown in Figure 1, 2, the present embodiment comprises battery 3, power sense circuit 1, embedded system 6 and microcontroller 7.
Also comprise the main power switch 2 and Chang Kai gate-controlled switch 4 that are connected with battery 3 respectively, main power switch 2 is connected with embedded system 6 by one way conducting device 5, often opens gate-controlled switch 4 and is also connected with microcontroller 7 with embedded system 6 respectively.Also comprising an end is connected between main power switch 2 and one way conducting device 5, the power sense circuit 1 that the other end is connected with microcontroller 7.Microcontroller 7 respectively with often open gate-controlled switch 4 and embedded system 6 signal is connected.
Battery 3 provides power supply for whole system, when main power switch 2 and Chang Kai gate-controlled switch 4 all disconnect, do not have power supply to provide, system does not consume any electric current, when main power switch 2 closes, power supply powers to embedded system 6 and microcontroller 7 through one way conducting device 5.System starts, microcontroller 7 controls often to open gate-controlled switch 4 and closes, and electric current is powered for embedded system 6 through main power switch 2 and Chang Kai gate-controlled switch 4 simultaneously, and embedded system 6 normally works.When closing main power switch 2, embedded system 6 still can obtain power supply supply by often opening gate-controlled switch 4.Now due to the cut-off of unidirectional gate-controlled switch 5, power sense circuit 1 detects that the power supply of main power switch 2 turns off, when microcontroller 7 obtains disconnected 2 signal of telecommunication of main power switch from power sense circuit 1, informed embed formula system 6 carries out power-off operation, before embedded system 6 shutdown terminates, notice microcontroller 7 has shut down, microcontroller 7 controls often to open gate-controlled switch 4 and disconnects, and system stops all power supply.
Described embedded system 6 be native system want the core work system of power protection, the power-off of burst may cause systems soft ware to collapse or other faults.
Described one way conducting device 5 only allows electric current one-way flow.
Described often opens gate-controlled switch 4, refers to that switch is in dissengaged positions when without any control, can external control switch closed and opening.
Whether described power sense circuit 1 can detect power supply supply exists.
Described main power switch 2 is the mains switches for manual operation equipment, manually opens and closes.
As Fig. 2, whether described microcontroller 7 can detect power supply supply by power sense circuit 1 exists, and can carry out alternately with embedded system 6, controls embedded system 6 and shuts down, can control the closed and disconnected often opening gate-controlled switch 4.
Described battery 3 is powered for whole system.
Claims (1)
1. a Time-delay power supply unit for battery supply set, comprises battery (3), embedded system (6) and microcontroller (7), it is characterized in that: also comprise the main power switch (2) that is connected with battery (3) respectively and often open gate-controlled switch (4); Main power switch (2) is connected with embedded system (6) by one way conducting device (5); Often open gate-controlled switch (4) to be connected with microcontroller (7) with embedded system (6) respectively; Also comprising an end is connected between main power switch (2) and one way conducting device (5), the power sense circuit (1) that the other end is connected with microcontroller (7); Microcontroller (7) respectively with often open gate-controlled switch (4) and embedded system (6) signal is connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520365262.8U CN204633413U (en) | 2015-06-01 | 2015-06-01 | A kind of Time-delay power supply unit of battery supply set |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520365262.8U CN204633413U (en) | 2015-06-01 | 2015-06-01 | A kind of Time-delay power supply unit of battery supply set |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204633413U true CN204633413U (en) | 2015-09-09 |
Family
ID=54052400
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520365262.8U Expired - Fee Related CN204633413U (en) | 2015-06-01 | 2015-06-01 | A kind of Time-delay power supply unit of battery supply set |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204633413U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107994891A (en) * | 2017-11-16 | 2018-05-04 | 北京奇虎科技有限公司 | A kind of time-delay shutdown circuit and electronic equipment |
-
2015
- 2015-06-01 CN CN201520365262.8U patent/CN204633413U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107994891A (en) * | 2017-11-16 | 2018-05-04 | 北京奇虎科技有限公司 | A kind of time-delay shutdown circuit and electronic equipment |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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: 20150909 Termination date: 20170601 |