CN206057538U - A kind of aging power supply of multi-channel LED direct current - Google Patents
A kind of aging power supply of multi-channel LED direct current Download PDFInfo
- Publication number
- CN206057538U CN206057538U CN201621044189.5U CN201621044189U CN206057538U CN 206057538 U CN206057538 U CN 206057538U CN 201621044189 U CN201621044189 U CN 201621044189U CN 206057538 U CN206057538 U CN 206057538U
- Authority
- CN
- China
- Prior art keywords
- current
- output
- module
- control system
- loop
- 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.)
- Active
Links
Landscapes
- Control Of Voltage And Current In General (AREA)
Abstract
The utility model discloses a kind of aging power supply of multi-channel LED direct current, including master control system, output Route Selection control system and some groups of electric current output group modules, master control system is connected with man-machine interactive system, electric isolution connection is carried out between master control system and output Route Selection control system, output Route Selection control system is connected with some groups of electric current output group modules, electric current output group module is connected with power power-supply, and the group number of electric current output group module is at least 11.In this utility model, every group of electric current output group module is equipped with 20 current control loops; improve detection efficiency; and ensure the accuracy and stability of output current;, output overvoltage overheated to power supply, current open carry out automatic protection; by master control system unified planning, the convenience of output current dilatation is increased.
Description
Technical field
This utility model is related to the supply unit of LED industry application, specifically, is to be related to a kind of multi-channel LED direct current
Aging power supply.
Background technology
Due to developing rapidly for global LED industry, each state has all put into effect some examination criterias for LED, while user
To the prescription of LED also more and more higher.Therefore, the test of the aging, service life of energization of LED also quickly grows, be to LED
Accurately be powered aging and life test, and basic requirement is the burn-in test of every LEDs, it is necessary to is an independence
Electric current, so market is to multichannel（It is more than 100 passages）The demand of DC current source also substantially increase.But, due to receiving
Equipment volume and cost are limited, and this multi-channel DC current source can not possibly be in each current loop using the scattered of large volume
Backing is radiated, so as to cause the output of this multi-channel DC current source, voltage, electric current to be restricted, at present
The range of application of this product is also limited to the test of low-power LED lamp bead, in the case where load changes, on power tube
The power for bearing accordingly changes, and unnecessary output is born by the power tube of current source completely, causes power tube drastically
Heating, so as to cause power tube to damage.
At present, the large-power LED light bead on market is more and more, while the LED lamp bead of disposable burn-in test is also more next
It is more, the lamp bead of more than 400 is usually required that while being tested.Therefore, in the urgent need to a kind of output power, voltage are high,
The big multi-channel DC current source of electric current solving the above problems, to promote the fast development of the industry.
The content of the invention
In order to overcome the shortcomings of existing technology, this utility model provides a kind of multi-channel LED direct current aging power supply.
Technical solutions of the utility model are as described below：
The aging power supply of a kind of multi-channel LED direct current, it is characterised in that including master control system, output Route Selection control
System and some groups of electric current output group modules, the master control system are connected with man-machine interactive system, the master control system
Between the output Route Selection control system carry out electric isolution and be connected, the output Route Selection control system with some groups
The electric current output group module connection, the electric current output group module are connected with power power-supply,
The group number of the electric current output group module is at least 11.
Further, the master control system includes MCU processors, and the MCU processors connect display interface, described
MCU processors are also bi-directionally connected with communication interface and data saver respectively, and the MCU processors are connect by exporting Route Selection
Mouth is connected with the output Route Selection control system.
Further, the communication interface is RS485 interfaces.
Further, the group number of the electric current output group module is 20.
Further, optically isolated module, command analysis module and group are provided with the output Route Selection control system
Logical control module, the optically isolated module are connected with master control system electric isolution through optocoupler, the optically isolated mould
Block is connected with the command analysis module, and the command analysis module connects the Combinational Logic Control module, and the combination is patrolled
Collect control module to be connected with the current interface of the electric current output group module.
Further, the electric current output group module includes 20 independent current control loops, and the current control is returned
Road include current closed-loop loop and with the loop-coupled output current module of the current closed-loop, the output current module with
ADC voltage x currents acquisition module connects, and current closed-loop loop front end is connected with DAC controlled output modules.
Further, the current closed-loop loop includes that electric current output loop, current detection module and electric current compare
Module, the electric current output loop are connected with the DAC outputs of the DAC controlled outputs module, the electric current output loop Jing institutes
State current detection module to be connected with current comparing module, the current comparing module adjusts electric current output and then connects the DAC
Output.
Further, in the current closed-loop loop, DAC output controls electric current output first computing of connection is put
The in-phase output end of big device A1, the outfan of first operational amplifier A 1 connect the grid of metal-oxide-semiconductor Q1, the metal-oxide-semiconductor Q1
Drain electrode Jing load resistances RL be connected with power power-supply Up, the source electrode of the metal-oxide-semiconductor Q1 connects the same of the second operational amplifier A 2
Phase input, the in-phase input end are also grounded through sampling resistor Rf, the outfan of second operational amplifier A 2 connection the
One resistance R1, the other end of first resistor R1 connect the inverting input of first operational amplifier A 1, and described first
The other end of resistance R1 also Jing second resistances R2 ground connection, outfan also the 6th resistance R6 of Jing of second operational amplifier A 2 with
The inverting input connection of second operational amplifier A 2, the inverting input are also grounded through the 5th resistance R5；
In the current closed-loop loop, also including voltage comparator, an input connection of the voltage comparator
Reference voltage Uf, its another input Jing critesistor NTC are connected with power supply VCC, and the input is also connect through 3rd resistor R3
Ground, the 4th resistance R4 of outfan Jing of the voltage comparator connect the power supply VCC, and the outfan of the voltage comparator is defeated
The power tube shutdown signal for going out connects the grid of the metal-oxide-semiconductor Q1.
Further, in the ADC voltage x currents acquisition module, including current acquisition ADC and voltage acquisition ADC,
The current acquisition ADC and the voltage acquisition ADC are connected with ADC timing control signals respectively, and the current acquisition ADC Jing are electric
Flow field simulation switching switch is bi-directionally connected with current measurement signal, and the voltage acquisition ADC Jing voltage analogs switching is switched and voltage
Measurement signal is bi-directionally connected, and the current analog switching switch and voltage analog switching switch are defeated by the master control system
Switching control in order.
Further, the man-machine interactive system include PC software management systems, screen liquid crystal Chinese operating system and
Touch screen button.
According to this utility model of such scheme, its advantage is, every group of electric current output group mould in this utility model
Block is equipped with 20 current control loops, can totally control the LED ageing managements of 100 passages for passing to, improve detection
Efficiency；By closed-loop process, automatic detection output current, feedback closed loop are exported, it is ensured that the accuracy and stability of output current,
, output overvoltage overheated to power supply, current open carry out automatic protection；The sampling of whole device is using by master control system unification control
System, so gathering signal does not have dependency with the current-mode block group number of device, and the dilatation to whole device output current brings pole
Big convenience.
Description of the drawings
Fig. 1 is system architecture diagram of the present utility model；
Fig. 2 is the structured flowchart of master control system in this utility model；
Fig. 3 is output Route Selection Control system architecture block diagram in this utility model；
Fig. 4 is the structural representation of every group of electric current output group module in this utility model；
Fig. 5 is the circuit theory diagrams in current closed-loop loop in this utility model；
Fig. 6 is the circuit diagram of circuit closed loop in this utility model；
Fig. 7 is the structured flowchart of ADC voltage x current acquisition modules in this utility model.
Specific embodiment
Below in conjunction with the accompanying drawings and embodiment is conducted further description to this utility model：
As shown in figure 1, a kind of aging power supply of multi-channel LED direct current, including master control system, output Route Selection control system
System and some groups of electric current output group modules, the master control system is connected with man-machine interactive system, the master control system and
Electric isolution connection, the output Route Selection control system and some groups of institutes are carried out between the output Route Selection control system
The connection of electric current output group module is stated, the electric current output group module is connected with power power-supply, according to output current size and electric current
Way, selects corresponding power power-supply system.
Man-machine interactive system is the interactive interface of this device and operator, and the man-machine interactive system includes PC software pipes
Reason system, screen liquid crystal Chinese operating system and touch screen button.
The group number of the electric current output group module is at least 11, it is preferred that the group number of the electric current output group module is 20,
Mainly it is introduced by taking 20 road electric current outputs as an example below.
As shown in Fig. 2 Intelligent treatment core of the master control system as whole supply unit, the association being responsible between modules
Adjust work.The master control system includes MCU processors, and the MCU processors connect display interface, and the MCU processors are also
It is bi-directionally connected with communication interface and data saver respectively, the MCU processors are defeated with described by exporting Route Selection interface
Outlet is connected by selection control system.
Preferably, the communication interface is RS485 interfaces so which locally not only can control, while RS485 can be passed through
Interface remote is controlled.
As shown in figure 3, the output Route Selection control system is mainly responsible for parsing all for coming from master control system
Work order, and start corresponding current output module and be operated.It is described output Route Selection control system in be provided with light every
From module, command analysis module and Combinational Logic Control module, the optically isolated module is through optocoupler and the main control system
System electric isolution connection, it is ensured that digital processing part carries out electrical isolation with simulation process, it is ensured that the stability of system, the light
Isolation module is connected with the command analysis module, and the command analysis module connects the Combinational Logic Control module, described
Combinational Logic Control module is connected with the current interface of the electric current output group module.
The instruction for carrying out self-control system is detected, the set of currents of output is determined first by a series of router-level topology
Number, secondly determines that corresponding set of currents number needs the function of performing（Output constant current, pulse current, clearance control output
Deng）, output current value is finally set, and starts corresponding function.Routing module control needs to perform each group voltage x current simultaneously
Gathered data is uploaded to master control system by synchronous acquisition.
As shown in figure 4, electric current output group module is nucleus module of the present utility model, it is responsible for the output of each current loop,
Every piece of electric current output group module includes 20 tunnel separate current control loops.The electric current output group module includes 20 independent electricity
Flow control loop, the current control loop include current closed-loop loop and with the loop-coupled output current of the current closed-loop
Module, the output current module are connected with ADC voltage x current acquisition modules, and current closed-loop loop front end is controlled with DAC
Output module connects.Exported by feedback closed loop, automatic detection output current, perfect protection mechanism realizes that power supply is overheated, defeated
Go out overvoltage, current open automatic protection.
As seen in figs. 5-6, the current closed-loop loop includes that electric current output loop, current detection module and electric current compare
Module, the electric current output loop are connected with the DAC outputs of the DAC controlled outputs module, the electric current output loop Jing institutes
State current detection module to be connected with current comparing module, the current comparing module adjusts electric current output and then connects the DAC
Output.
Specifically, in current closed-loop loop, the homophase of DAC output controls electric current output the first operational amplifier A 1 of connection
Outfan, the outfan of the first operational amplifier A 1 connect the grid of metal-oxide-semiconductor Q1, the drain electrode Jing load resistances RL of metal-oxide-semiconductor Q1 with
Power power-supply Up connects, and the source electrode of metal-oxide-semiconductor Q1 connects the in-phase input end of the second operational amplifier A 2, the in-phase input end also Jing
Over-sampling resistance Rf is grounded, and outfan connection first resistor R1 of the second operational amplifier A 2, the other end of first resistor R1 connect
Connect the inverting input of the first operational amplifier A 1, the other end also Jing second resistances R2 ground connection of first resistor R1, the second computing
The outfan of amplifier A2 also the 6th resistance R6 of Jing are connected with the inverting input of the second operational amplifier A 2, the inverting input
Also it is grounded through the 5th resistance R5；In current closed-loop loop, also including voltage comparator, an input of voltage comparator
Connection reference voltage Uf, its another input Jing critesistor NTC are connected with power supply VCC, and the input is also through 3rd resistor
R3 is grounded, the 4th resistance R4 of the outfan Jing connection power supply VCC of voltage comparator, the power of the outfan output of voltage comparator
Pipe shutdown signal connects the grid of metal-oxide-semiconductor Q1.
Whole current loop uses sample resistance Rf to use the precision resistance of high stability as the feedback electricity of current loop
Resistance.On hardware, when output current has slight fluctuations, on the voltage of sampling resistor, this voltage passes through one to direct reaction
The feedback circuit of series, direct reaction input control end, it is achieved thereby that the hardware closed-loop of whole current loop.
Current detection module constantly detects output current size, when detection electric current exceedes limit value with current error is arranged
Afterwards, the size of adjust automatically output current, realizes digital closed loop process, it is ensured that the long-time stability of electric current output.
As shown in fig. 7, in ADC voltage x current acquisition modules, including current acquisition ADC and voltage acquisition ADC, electric current is adopted
Collection ADC and voltage acquisition ADC is connected with ADC timing control signals respectively, and the switching of current acquisition ADC Jing current analogs is switched and electricity
Flow measurement signal is bi-directionally connected, and voltage acquisition ADC Jing voltage analogs switching switch is bi-directionally connected with voltage measurement signal, current-mode
Intend switching switch and voltage analog switching switch is defeated by master control system switching control in order, to reach the different input letters of collection
Number purpose.
And in this utility model, every group of electric current output group module, using two panels ADC, 20 road electric current of a piece of collection is a piece of
20 voltages of collection.The sampling of whole device so gathers the current-mode of signal and device using being uniformly controlled by main control module
Block group number does not have dependency.So no matter how many block current output module group, gathers the interval time of any one signal all
The 5S times are only needed to, the bringing great convenience property of dilatation to whole device output current.
It should be appreciated that for those of ordinary skills, can be improved according to the above description or be converted,
And all these modifications and variations should all belong to the protection domain of this utility model claims.
Exemplary description is carried out to this utility model patent above in conjunction with accompanying drawing, it is clear that the reality of this utility model patent
Now it is not subject to the restrictions described above, as long as the method design for employing this utility model patent is various with what technical scheme was carried out
Improve, or it is not improved the design of this utility model patent and technical scheme are directly applied to into other occasions, in this reality
With in new protection domain.
Claims (10)
1. the aging power supply of a kind of multi-channel LED direct current, it is characterised in that including master control system, output Route Selection control system
System and some groups of electric current output group modules, the master control system is connected with man-machine interactive system, the master control system and
Electric isolution connection, the output Route Selection control system and some groups of institutes are carried out between the output Route Selection control system
The connection of electric current output group module is stated, the electric current output group module is connected with power power-supply,
The group number of the electric current output group module is at least 11.
2. the aging power supply of multi-channel LED direct current according to claim 1, it is characterised in that the master control system includes
MCU processors, the MCU processors connect display interface, the MCU processors also respectively with communication interface and data saver
It is bi-directionally connected, the MCU processors are connected with the output Route Selection control system by exporting Route Selection interface.
3. the aging power supply of multi-channel LED direct current according to claim 2, it is characterised in that the communication interface is RS485
Interface.
4. the aging power supply of multi-channel LED direct current according to claim 1, it is characterised in that the electric current output group module
Group number be 20.
5. the aging power supply of multi-channel LED direct current according to claim 1, it is characterised in that the output Route Selection control
Optically isolated module, command analysis module and Combinational Logic Control module are provided with system processed, the optically isolated module is through light
Coupling is connected with master control system electric isolution, and the optically isolated module is connected with the command analysis module, the instruction solution
Analysis module connects the Combinational Logic Control module, the electric current of the Combinational Logic Control module and the electric current output group module
Interface connects.
6. the aging power supply of multi-channel LED direct current according to claim 1, it is characterised in that the electric current output group module
Including 20 independent current control loops, the current control loop is included current closed-loop loop and is returned with the current closed-loop
The output current module of road connection, the output current module are connected with ADC voltage x current acquisition modules, and the current closed-loop is returned
Road front end is connected with DAC controlled output modules.
7. the aging power supply of multi-channel LED direct current according to claim 6, it is characterised in that the current closed-loop loop bag
Include electric current output loop, current detection module and current comparing module, the electric current output loop and the DAC controlled outputs
The DAC output connections of module, current detection module described in the electric current output loop Jing are connected with current comparing module, the electricity
Stream comparison module adjusts electric current output and then connects the DAC outputs.
8. the aging power supply of multi-channel LED direct current according to claim 7, it is characterised in that in the current closed-loop loop
In, the in-phase output end of DAC output controls electric current output first operational amplifier A 1 of connection, first operational amplifier
The outfan of A1 connects the grid of metal-oxide-semiconductor Q1, and the drain electrode Jing load resistances RL of the metal-oxide-semiconductor Q1 is connected with power power-supply Up, institute
The source electrode for stating metal-oxide-semiconductor Q1 connects the in-phase input end of the second operational amplifier A 2, and the in-phase input end is also through sampling resistor Rf
Ground connection, outfan connection first resistor R1 of second operational amplifier A 2, the other end connection institute of first resistor R1
The inverting input of the first operational amplifier A 1 is stated, the other end also Jing second resistances R2 ground connection of first resistor R1 is described
The outfan of the second operational amplifier A 2 also the 6th resistance R6 of Jing are connected with the inverting input of second operational amplifier A 2,
The inverting input is also grounded through the 5th resistance R5；
In the current closed-loop loop, also including voltage comparator, an input connection benchmark of the voltage comparator
Voltage Uf, its another input Jing critesistor NTC are connected with power supply VCC, and the input is also grounded through 3rd resistor R3, institute
The 4th resistance R4 of outfan Jing for stating voltage comparator connect the power supply VCC, the outfan output of the voltage comparator
Power tube shutdown signal connects the grid of the metal-oxide-semiconductor Q1.
9. the aging power supply of multi-channel LED direct current according to claim 6, it is characterised in that adopt in the ADC voltage x currents
Collection module in, including current acquisition ADC and voltage acquisition ADC, the current acquisition ADC and the voltage acquisition ADC respectively with
ADC timing control signals connect, and the current acquisition ADC Jing current analogs switching switch is bi-directionally connected with current measurement signal,
The voltage acquisition ADC Jing voltage analogs switching switch is bi-directionally connected with voltage measurement signal, the current analog switching switch
It is defeated by master control system switching control in order with voltage analog switching switch.
10. the aging power supply of multi-channel LED direct current according to claim 1, it is characterised in that the man-machine interactive system bag
Include PC software management systems, screen liquid crystal Chinese operating system and touch screen button.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621044189.5U CN206057538U (en) | 2016-09-07 | 2016-09-07 | A kind of aging power supply of multi-channel LED direct current |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621044189.5U CN206057538U (en) | 2016-09-07 | 2016-09-07 | A kind of aging power supply of multi-channel LED direct current |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206057538U true CN206057538U (en) | 2017-03-29 |
Family
ID=58369996
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621044189.5U Active CN206057538U (en) | 2016-09-07 | 2016-09-07 | A kind of aging power supply of multi-channel LED direct current |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206057538U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108572331A (en) * | 2017-08-08 | 2018-09-25 | 常州星宇车灯股份有限公司 | A kind of portable multi-channel car light on-line detecting system |
| CN112486237A (en) * | 2020-12-17 | 2021-03-12 | 三门核电有限公司 | Multi-channel high-precision micro-current source for nuclear power reactor core nuclear measurement system |
| CN113359924A (en) * | 2021-06-23 | 2021-09-07 | 深圳市费思泰克科技有限公司 | Program-controlled direct-current power supply control circuit |
-
2016
- 2016-09-07 CN CN201621044189.5U patent/CN206057538U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108572331A (en) * | 2017-08-08 | 2018-09-25 | 常州星宇车灯股份有限公司 | A kind of portable multi-channel car light on-line detecting system |
| CN112486237A (en) * | 2020-12-17 | 2021-03-12 | 三门核电有限公司 | Multi-channel high-precision micro-current source for nuclear power reactor core nuclear measurement system |
| CN113359924A (en) * | 2021-06-23 | 2021-09-07 | 深圳市费思泰克科技有限公司 | Program-controlled direct-current power supply control circuit |
| CN113359924B (en) * | 2021-06-23 | 2021-12-03 | 深圳市费思泰克科技有限公司 | Program-controlled direct-current power supply control circuit |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN206057538U (en) | A kind of aging power supply of multi-channel LED direct current | |
| CN203798886U (en) | Current sampling circuit | |
| CN103196491B (en) | Transformer integral comprehensive detection device | |
| CN204166424U (en) | Simple intelligent High-accuracy direct current electronic load | |
| CN103208839A (en) | Lithium ion battery pack charger based on controller area network (CAN) bus and charging control method | |
| CN104345867B (en) | Field device | |
| CN104539170B (en) | Three-level Cuk voltage regulation constant current source and operation method thereof | |
| CN102062825B (en) | Direct current protection test device and test method of direct current protector | |
| CN103019932B (en) | A kind of method obtaining embedded software version information | |
| CN202631620U (en) | Optical module intelligent test board | |
| CN106468702A (en) | A kind of multi-parameter water quality detector control system | |
| CN202025033U (en) | Bidirectional input/output interface circuit | |
| CN208721742U (en) | A kind of portable high-pressure auxiliary switch for circuit breaker resistance meter | |
| CN103454508A (en) | Four-channel overcurrent and overvoltage protecting tester | |
| CN203428032U (en) | DC-DC linear piecewise converter used for airplane power source system | |
| CN202395741U (en) | Single-pole double-throw electronic switch with single wire system | |
| CN201788243U (en) | Direct-current protection testing device | |
| CN206114819U (en) | Simple and easy type multichannel impedance and division short circuit detecting system | |
| CN212503488U (en) | Portable elevator brake action reliability testing device | |
| CN203573105U (en) | Time setting signal testing tool | |
| CN209231756U (en) | A kind of auxiliary laser detection device realizes the power supply module of AGC function | |
| CN202372818U (en) | Multi-mode infrared control switch | |
| CN203786264U (en) | Temperature rise test loop of low voltage switchgear assembly | |
| CN104317216A (en) | General AC-DC electric signal threshold arrangement and discrimination system | |
| CN109884575A (en) | A kind of single-phase electrical appliance research and application system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20210930 Address after: No.1401-1403, 13 Pingji Avenue, shanglilang community, Nanwan street, Longgang District, Shenzhen, Guangdong 518000 Patentee after: SHENZHEN LONGYUAN TECHNOLOGY Co.,Ltd. Address before: 518000 23b06, building 2, No. 182, Bulan Road, shanglilang community, Nanwan street, Shenzhen, Guangdong Patentee before: SHENZHEN JIA ZHAOHONG ELECTRONICS Co.,Ltd. |