CN206270871U - The protection device of electronic hard disc in LED photosystem - Google Patents
The protection device of electronic hard disc in LED photosystem Download PDFInfo
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- CN206270871U CN206270871U CN201621353406.9U CN201621353406U CN206270871U CN 206270871 U CN206270871 U CN 206270871U CN 201621353406 U CN201621353406 U CN 201621353406U CN 206270871 U CN206270871 U CN 206270871U
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- hard disc
- power
- modules
- electronic hard
- protection device
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Abstract
The utility model is related to a kind of protection device of electronic hard disc in LED photosystem.The protection device includes that 5V Power Entry Modules, the 5V Power Entry Modules turn 3.3V power modules and connect electronic hard disc, CPU, CPLD chip and SRAM by a 5V；It is characterized in that：The 5V Power Entry Modules also connect a 5V and turn 3.3V power modules by charge circuit, farad capacitor, 5V Power Entry Modules connection voltage detection module.The utility model has simple structure, uses safe and reliable advantage.
Description
Technical field
The utility model is related to electronic hard disc in LED photosystem, electronic hard disc in particularly a kind of LED photosystem
Protection device.
Background technology
SD card（Secure Digital Memory Card）, it is a kind of a new generation's note based on semiconductor fast-flash memory device
Recall equipment, be also the one kind in electronic hard disc.It by widely in being used on mancarried device, such as digital camera, individual number
Code assistant (foreign language abbreviation PDA) and multimedia player etc.;With various features such as Large Copacity, high-performance, safety.
Recently as the high speed development of technology, the electronic hard disc of various Large Copacities（Such as：SD card）As data storage
Every field is widely used, especially for the LED photosystem that off line is played.Because people are to LED photosystem
Display effect requirement more and more higher, display content is also increasingly enriched, and required data capacity is also increasing, to data storage
The requirement of the electronic hard disc of device also more and more higher.
Used as the SD card of data storage, be easiest to damage is exactly to power off suddenly in the process of running or voltage instability；
And this certain recurrent thing in LED lamplight system engineering；Due to the particularity of LED photosystem（Can not possibly be as some
Electronic product equally matches somebody with somebody external cell）, therefore how the electronic hard disc of protecting of economical and efficient is not influenceed to turn into one by supply voltage
Individual problem.
The main cause that SD card is damaged：It is exactly in SD card operation（Card Reader, write card）Power-off or voltage are unexpected suddenly for system
Step-down, so as to cause SD card internal data to damage；Influence the operation of LED photosystem.
Utility model content
The purpose of this utility model is the protection device for providing electronic hard disc in a kind of LED photosystem, is mainly solved
Technical problem existing for above-mentioned prior art, it has simple structure, uses safe and reliable advantage.
To achieve the above object, the technical solution of the utility model is：
The protection device of electronic hard disc in a kind of LED photosystem, it includes 5V Power Entry Modules, the 5V power inputs
Module turns 3.3V power modules and connects electronic hard disc, CPU, CPLD chip and SRAM by a 5V；It is characterized in that：5V electricity
Source input module also connects a 5V and turns 3.3V power modules by charge circuit, farad capacitor, and the 5V Power Entry Modules connect
Connect voltage detection module.
The protection device of electronic hard disc in described LED photosystem, it is characterised in that：The 5V Power Entry Modules also lead to
Cross the 2nd 5V and turn 3.3V power modules connection mixed-media network modules mixed-media.
The protection device of electronic hard disc in described LED photosystem, it is characterised in that：The 5V Power Entry Modules also divide
Other connecting communication module and output display module.
The protection device of electronic hard disc in described LED photosystem, it is characterised in that：First 5V turns 3.3V power supply moulds
Block uses AMS1117-3.3V chips.
The protection device of electronic hard disc in described LED photosystem, it is characterised in that：The voltage detection module is used
MAX813L chips.
The protection device of electronic hard disc in described LED photosystem, it is characterised in that：The farad capacitor using 0.1-
The electric capacity of 0.5F/5.5V.
Its operation principle is：With farad capacitor as electronic hard disc and the stand-by power supply of CPU；When voltage detection module detection
When being less than CPU working voltages to system power supply voltage, powered by farad capacitor, normal voltage is less than in electronic hard disc supply voltage
Before, stop the operation to electronic hard disc；So as to protect electronic hard disc.
Brief description of the drawings
Fig. 1 is structured flowchart of the present utility model.
Specific embodiment
Fig. 1 is referred to, the utility model discloses a kind of protection device of electronic hard disc in LED photosystem.As schemed
Show：It is hard that it includes that 5V Power Entry Modules 1, the 5V Power Entry Modules 1 turn the connection electronics of 3.3V power modules 2 by a 5V
Disk 3（Mainly SD card）, CPU 4, CPLD chips 5 and SRAM 6.The 5V Power Entry Modules 1 also pass through charge circuit 7, method
Draw electric capacity 8 to connect a 5V and turn 3.3V power modules 2, the 5V Power Entry Modules 1 connection voltage detection module 13.
The 5V Power Entry Modules 1 also turn 3.3V power modules 9 and connect mixed-media network modules mixed-media 10 by the 2nd 5V.
The 5V Power Entry Modules 1 are also respectively connected with communication module 11 and output display module 12.
First 5V turns the 5V of 3.3V power modules 2 and the 2nd and turns 3.3V power modules 9 using AMS1117-3.3V chips, it
5V input voltages can be converted into 3.3V operating voltages.
The voltage detection module 13 uses MAX813L chips.It powers for 5V, can be produced when 5V supply voltages are less than 4.8V
A raw low spot ordinary mail number gives CPU 4.
The farad capacitor 8 need to only be ensured when external power source dead electricity or brownout using the electric capacity of 0.1-0.5F/5.5V
When, can guarantee that CPU 4 and electronic hard disc 3 have enough time to complete protection act.
The electronic hard disc 3 is common SD card, the 2G/4G/8G/16G cards of such as ScanDisk, the 2G/4G/ of Kingston
8G/16G cards.
The CPU 4 using NUVOTON NUC130LE3CN chips, be 32 embedded ARM Cortex-M0 cores it is micro-
Controller, it is adaptable to the application field of Industry Control and the abundant communication interface of needs；Maximum speed can be run to 50 MHz,
The flash storage of built-in 128K bytes, and 16K bytes SRAM.
The LCMX02-1200 family chips of the CPLD chips 5 use LATTICE, built-in 64KbitsSRAM,
10KbitsRAM, 1280 registers.
The SRAM 6 uses the IS61LV5128 chips of ISSI, and data capacity is 512K x 8bit；It is static high-speed cmos
SRAM；Highest reads and writes speed up to 125MHZ.
The network data processing chip of the mixed-media network modules mixed-media 10 uses the DM9000A chips of DAVICOM, and 10/100M speed is certainly
Adapt to, inside there is 4KSRAM.
The utility model guard method principle is described as follows:
1), under normal circumstances, 5V power supplys are charged 5V supply voltages by charge circuit 7 to farad capacitor 8, Zhi Dao electricity
Pressure reaches the ceiling voltage of farad capacitor 8；3.3V power modules 2 are turned by a 5.5V simultaneously and generates 3.3V power supplys to CPU, electricity
The 3.3V equipment such as sub- hard disk, CPLD chips, SRAM are powered.
2）, when 5V supply voltages disconnect, voltage detection module 13 can produce an interrupt signal to CPU.While farad
Electric capacity 8 starts to turn 3.3V power modules 2 to a 5.5V to power；CPU, the normal 3.3V of electronic hard disc is maintained to power.
3）, after CPU receives the interrupt signal of voltage detection module 13, stopping present procedure being got started, into operation
Electronic hard disc shuts down procedure；Stop the operation to electronic hard disc by normal step；So as to protect electronic hard disc.
The main points of the utility model guard method are as follows：
1）, 5V supply voltages are when disconnecting, the voltage of voltage detection module is step-down gradually, can adjust interrupt signal product
Voltage threshold when raw.With corresponding different working environment.
2）, CPU stop it is general to time of electronic hard disc operation in 100MS or so, therefore farad capacitor Capacity Selection
Need to only ensure to maintain the 3.3V voltage 500MS times just can be with.
3）, as far as possible make farad capacitor maintain 3.3V only CPU, electronic hard disc are powered.
It is only in sum preferred embodiment of the present utility model, not for limiting implementation model of the present utility model
Enclose.The equivalence changes that i.e. all contents according to present utility model application the scope of the claims are made and modification, all should be of the present utility model
Technology category.
Claims (6)
1. in a kind of LED photosystem electronic hard disc protection device, it include 5V Power Entry Modules（1）, the 5V power supplys it is defeated
Enter module（1）3.3V power modules are turned by a 5V（2）Connection electronic hard disc（3）、CPU（4）, CPLD chips（5）And SRAM
（6）；It is characterized in that：The 5V Power Entry Modules（1）Also pass through charge circuit（7）, farad capacitor（8）A 5V is connected to turn
3.3V power modules（2）, the 5V Power Entry Modules（1）Connection voltage detection module（13）.
2. in LED photosystem according to claim 1 electronic hard disc protection device, it is characterised in that：The 5V power supplys
Input module（1）3.3V power modules are also turned by the 2nd 5V（9）Connection mixed-media network modules mixed-media（10）.
3. in LED photosystem according to claim 1 electronic hard disc protection device, it is characterised in that：The 5V power supplys
Input module（1）It is also respectively connected with communication module（11）With output display module（12）.
4. in LED photosystem according to claim 1 electronic hard disc protection device, it is characterised in that：First 5V
Turn 3.3V power modules（2）Using AMS1117-3.3V chips.
5. in LED photosystem according to claim 1 electronic hard disc protection device, it is characterised in that：The voltage is examined
Survey module（13）Using MAX813L chips.
6. in LED photosystem according to claim 1 electronic hard disc protection device, it is characterised in that：This farad of electricity
Hold（8）Using the electric capacity of 0.1-0.5F/5.5V.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621353406.9U CN206270871U (en) | 2016-12-12 | 2016-12-12 | The protection device of electronic hard disc in LED photosystem |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621353406.9U CN206270871U (en) | 2016-12-12 | 2016-12-12 | The protection device of electronic hard disc in LED photosystem |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206270871U true CN206270871U (en) | 2017-06-20 |
Family
ID=59044991
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621353406.9U Active CN206270871U (en) | 2016-12-12 | 2016-12-12 | The protection device of electronic hard disc in LED photosystem |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206270871U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106648017A (en) * | 2016-12-12 | 2017-05-10 | 上海光联照明有限公司 | Protection device and method of electronic hard disk in LED light system |
-
2016
- 2016-12-12 CN CN201621353406.9U patent/CN206270871U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106648017A (en) * | 2016-12-12 | 2017-05-10 | 上海光联照明有限公司 | Protection device and method of electronic hard disk in LED light system |
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