CN201910737U - Intelligent digital adjustable power supply of liquid crystal display module detection system - Google Patents
Intelligent digital adjustable power supply of liquid crystal display module detection system Download PDFInfo
- Publication number
- CN201910737U CN201910737U CN2011200071808U CN201120007180U CN201910737U CN 201910737 U CN201910737 U CN 201910737U CN 2011200071808 U CN2011200071808 U CN 2011200071808U CN 201120007180 U CN201120007180 U CN 201120007180U CN 201910737 U CN201910737 U CN 201910737U
- Authority
- CN
- China
- Prior art keywords
- module
- power supply
- liquid crystal
- crystal display
- signals
- 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.)
- Expired - Fee Related
Links
Images
Landscapes
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
Abstract
The utility model relates to an intelligent digital adjustable power supply of a liquid crystal display module detection system, which comprises a multi-channel transformer, an isolation adjusting module, a signal sampling module, an analog-to-digital (A/D) converter and a field programmable gate array (FPGA) controller. The multi-channel transformer provides multi-channel output voltage signals which are transmitted to the isolation adjusting module; after the signals are rectified and filtered in the isolation adjusting module, the signals are input through the input ends of a metal oxide semiconductor (MOS) tube, and after the signals output by the output ends of the MOS tube are filtered, the signals are transmitted to the signal sampling module; after the multi-channel output signals of the isolation adjusting module are sampled by the signal sampling module, are amplified and are converted by the A/D converter, the signals are transmitted to the FPGA controller; and the FPGA controller can output switching signals with different frequencies to control the conduction frequency of the MOS tube and thereby the magnitudes of the multi-channel output voltage signals can be controlled. The intelligent digital adjustable power supply has the advantages that since an intelligent controller is used in the power supply, the multi-channel output of the voltage of the power supply can be realized, the adjustable range is wide, the accuracy is high and the response speed is fast.
Description
Technical field
The utility model relates to a kind of liquid crystal display module detection system intelligent digital and adjusts power supply, especially the detection for various liquid crystal display modules provides multichannel scalable DC power supply, can be applicable to the working power of the application enterprise of the manufacturing enterprise of liquid crystal display module and liquid crystal display module as the product checkout equipment.
Background technology
The liquid crystal display module is widely used in numerous areas such as industry, national defence, household electrical appliances, traffic as present main display device.Liquid crystal display module production capacity improves year by year, adopts artificial semi-automatic detection and detect always, detects the power supply that uses and is analog power, have volume big, adjust inconvenience, precision not high, switch difficulty, defective such as stablize inadequately.
If full-automatic intelligent multichannel scalable DC power supply can be provided for the detection of liquid crystal display module, will overcome above-mentioned defective.
Summary of the invention
The purpose of this utility model provides a kind of liquid crystal display module detection system intelligent digital and adjusts power supply, and this power supply adopts intelligent controller, can realize the multichannel output of supply voltage, and adjustable range is wide, the precision height, and response speed is fast.
For achieving the above object, the utility model is achieved through the following technical solutions:
Liquid crystal display module detection system intelligent digital is adjusted power supply, comprises the multichannel transformer, isolates adjusting module, sample of signal module, A/D converter, FPGA controller;
Described multichannel transformer provides the multichannel output voltage signal, gives the isolation adjusting module;
Described isolation adjusting module comprises rectification filtering module, metal-oxide-semiconductor, secondary inductance capacitor filtering module, optocoupler isolator, and rectification filtering module, metal-oxide-semiconductor, secondary inductance capacitor filtering module are connected successively; By the duty ratio of FPGA controller control metal-oxide-semiconductor conducting, thus the adjustment of realization output voltage size;
After described sample of signal module is sampled to each road output signal of isolating adjusting module, through after amplification and the A/D conversion signal being passed to the FPGA controller;
The switching signal of the exportable different frequency of described FPGA controller is controlled the turn-on frequency of metal-oxide-semiconductor, thereby controls the output voltage signal size on each road.
Described FPGA controller connects the liquid crystal display module, and magnitude of voltage and current value that detected each road is exported export the demonstration of liquid crystal display module to.
Described FPGA controller connects communication module, by communication module and upper machine communication.
Compared with prior art, the beneficial effects of the utility model are:
1) this power supply adopts intelligent controller, can realize the multichannel output of supply voltage, for the detection of various liquid crystal display modules provides multichannel scalable DC power supply; Can be applicable to the working power of the application enterprise of the manufacturing enterprise of liquid crystal display module and liquid crystal display module as the product checkout equipment.
2) adjustable range is wide, the precision height, and response speed is fast; Have overcurrent, open circuit, the overvoltage automatic protection functions.
3) this power supply not only has the man-machine operation interface that LCD shows, also has the host computer operation-interface.At different liquid crystal display modules backlight electric power, working power, contrast power supply can be set and open circuit, the short circuit threshold value, realize the electricity consumption situation of the tested liquid crystal display module of automatic diagnosis.
Description of drawings
Fig. 1 is the structured flowchart that liquid crystal display module detection system intelligent digital is adjusted power supply;
Fig. 2 is that liquid crystal display module detection system intelligence can numeral be adjusted power supply profile schematic diagram;
Fig. 3 is the structured flowchart of isolating adjusting module.
Embodiment
See Fig. 1, Fig. 3, liquid crystal display module detection system intelligent digital is adjusted power supply, comprises the multichannel transformer, isolates adjusting module, sample of signal module, A/D converter, FPGA controller, liquid crystal display module, communication module.Described multichannel output transformer provides the multichannel output voltage, after the rectification, selects to use for controller; A plurality of voltage isolation adjusting modules switch the conducting state of metal-oxide-semiconductor under the control of the switching signal of controller output different frequency, export required voltage through after the filtering again; After the sample of signal module is sampled to each road output signal, through giving the FPGA controller again after amplification and the A/D conversion; The FPGA controller outputs to the voltage signal of receiving on the liquid crystal display module; The FPGA controller is provided with communication interface, by communication module and upper machine communication.
The input of this device is imported various alternative power supplys by a multichannel transformer.Each road input power supply is received the metal-oxide-semiconductor input after rectification, filtering.The metal-oxide-semiconductor output is again through the required various power supplys of output LCD MODULE behind the secondary inductance capacitor filtering.The control end of metal-oxide-semiconductor is controlled by optocoupler isolator by the FPGA controller.The duty ratio of FPGA controller control metal-oxide-semiconductor conducting, thereby the adjustment function of realization output voltage.In the power output end sampling, be input to the FPGA controller by A/D converter, whether reach requirement in order to detect; Perhaps exceeded load, entered guard mode thereby turn-off output.Simultaneously, system is that every road out-put supply has disposed the adjustment button, is used for adjusting output.Also dispose the liquid crystal display module, be used for showing in real time each road power source voltage, electric current.
FPGA controller of the present utility model partly is the core that intelligent digital is adjusted power supply, at first, according to the selection of adjusting button, controls the turn-on frequency of each metal-oxide-semiconductor, thereby controls the output voltage of each road power supply.Secondly, according to the information that sample of signal module and A/D converter collect, show the voltage or the electric current of each road output.Also have, when output voltage or electric current exceeded certain limit, the output of turn-offing metal-oxide-semiconductor reached the purpose of tested liquid crystal module of protection and power supply complete machine.The utility model adopts the FPGA controller, have response speed fast, characteristics such as can not decipher.Being issued to setting from instruction finishes and can finish in several microseconds; If load short circuits, this power supply also can be turn-offed output in delicate several, reach purpose energy-conservation and tested equipment of protection and power supply itself.
The utlity model has intelligent characteristic and numerical characteristic, also have the host computer interface, can carry out communication by communication module and host computer, each road of rapid adjustment outputs to desired value.In fact each the road output of this power supply can be used as function generator and use, and can be provided with and adjust by host computer procedure, realizes the various digital waveforms of wanting.This function reflects its value when driving the multistable state liquid srystal display screen.
See Fig. 2,,, adjust VDD, VEE+ or four road output voltage values such as VEE-, VLED respectively, for lighting the hardware condition that liquid crystal display module to be checked is ready to the power supply aspect by each button according to liquid crystal display module to be checked requirement.Simultaneously, can demonstrate the voltage and current situation of each road output on the liquid crystal display screen.When using this power supply of PC control, can be to host computer instruction response fast, the out-put supply of the various waveforms that realization is wanted.
Claims (3)
1. liquid crystal display module detection system intelligent digital is adjusted power supply, it is characterized in that, comprises the multichannel transformer, isolates adjusting module, sample of signal module, A/D converter, FPGA controller;
Described multichannel transformer provides the multichannel output voltage signal, gives the isolation adjusting module;
Described isolation adjusting module comprises rectification filtering module, metal-oxide-semiconductor, secondary inductance capacitor filtering module, optocoupler isolator, and rectification filtering module, metal-oxide-semiconductor, secondary inductance capacitor filtering module are connected successively;
After described sample of signal module is sampled to each road output signal of isolating adjusting module, through after amplification and the A/D conversion signal being passed to the FPGA controller;
The switching signal of the exportable different frequency of described FPGA controller, the turn-on frequency of control metal-oxide-semiconductor.
2. liquid crystal display module detection system intelligent digital according to claim 1 is adjusted power supply, it is characterized in that, described FPGA controller connects the liquid crystal display module.
3. liquid crystal display module detection system intelligent digital according to claim 1 and 2 is adjusted power supply, it is characterized in that, described FPGA controller connects communication module, by communication module and upper machine communication.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200071808U CN201910737U (en) | 2011-01-11 | 2011-01-11 | Intelligent digital adjustable power supply of liquid crystal display module detection system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200071808U CN201910737U (en) | 2011-01-11 | 2011-01-11 | Intelligent digital adjustable power supply of liquid crystal display module detection system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201910737U true CN201910737U (en) | 2011-07-27 |
Family
ID=44302935
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200071808U Expired - Fee Related CN201910737U (en) | 2011-01-11 | 2011-01-11 | Intelligent digital adjustable power supply of liquid crystal display module detection system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201910737U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102025275A (en) * | 2011-01-11 | 2011-04-20 | 鞍山亚世光电显示有限公司 | Intelligent digital regulating power supply for liquid crystal display (LCD) module detection system |
| CN112019046A (en) * | 2019-05-30 | 2020-12-01 | 贵州振华群英电器有限公司（国营第八九一厂） | Multichannel power supply conversion management module based on singlechip |
-
2011
- 2011-01-11 CN CN2011200071808U patent/CN201910737U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102025275A (en) * | 2011-01-11 | 2011-04-20 | 鞍山亚世光电显示有限公司 | Intelligent digital regulating power supply for liquid crystal display (LCD) module detection system |
| CN112019046A (en) * | 2019-05-30 | 2020-12-01 | 贵州振华群英电器有限公司（国营第八九一厂） | Multichannel power supply conversion management module based on singlechip |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN204575813U (en) | A kind of relay electric service life detector | |
| CN104269893A (en) | Charging control method and charging system | |
| CN211527816U (en) | Multi-channel multifunctional integrated automatic testing equipment for electromagnetic valve | |
| CN203135390U (en) | Over-current protection circuit and electronic apparatus | |
| CN105005013A (en) | Calibration device for high current test equipment | |
| CN105301478A (en) | Detection device and detection method of 3.7V cell single-string protection plate | |
| CN201910737U (en) | Intelligent digital adjustable power supply of liquid crystal display module detection system | |
| CN202330520U (en) | High-voltage isolation sampling circuit | |
| CN103063905A (en) | Single battery voltage isolation detecting system | |
| CN102801333A (en) | Voltage supplying device | |
| CN204832483U (en) | Calibrating device of big current test equipment | |
| CN102025275A (en) | Intelligent digital regulating power supply for liquid crystal display (LCD) module detection system | |
| CN102736799A (en) | Infrared touch screen driven by constant current source and constant current source driving circuit | |
| CN104716526A (en) | Signal terminal reusing method and device | |
| CN204304446U (en) | The quick harmonics restraint reactive power compensator of a kind of intelligent integrated formula | |
| CN103454508A (en) | Four-channel overcurrent and overvoltage protecting tester | |
| CN207010540U (en) | The driving control system and its draw-out power supply of electric and electronic power module | |
| CN102103157B (en) | Direct voltage isolated sampling device | |
| CN208063053U (en) | A kind of power circuit of automotive motor controller | |
| CN103095144B (en) | Power supply circuit provided with voltage acceleration compensation | |
| CN112366923A (en) | Isolated voltage sampling device | |
| CN104090199B (en) | Device for simulating poor power contact phenomenon in use process of electric appliance | |
| CN200941107Y (en) | Digital oscilloscope having detection output of pass/failure | |
| CN204231310U (en) | A kind of many waveforms Width funtion generation device | |
| CN102841242B (en) | Sampling circuit and electronic equipment |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: YASHI OPTOELECTRONICS CO., LTD. Free format text: FORMER OWNER: ANSHAN YES OPTOELECTRONICS DISPLAY CO., LTD. Effective date: 20130627 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20130627 Address after: 114031 No. 196 Qianshan Middle Road, Liaoning, Anshan Patentee after: Yashi Photoelectric Co.,Ltd. Address before: 114031, No. 215, Qianshan Road, hi tech Zone, Liaoning, Anshan Patentee before: Anshan Yes Optoelectronics Display Co., Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110727 Termination date: 20150111 |
|
| EXPY | Termination of patent right or utility model |