CN203164558U - Equipment for measuring Flicker degrees of liquid crystal modules - Google Patents
Equipment for measuring Flicker degrees of liquid crystal modules Download PDFInfo
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- CN203164558U CN203164558U CN 201320185733 CN201320185733U CN203164558U CN 203164558 U CN203164558 U CN 203164558U CN 201320185733 CN201320185733 CN 201320185733 CN 201320185733 U CN201320185733 U CN 201320185733U CN 203164558 U CN203164558 U CN 203164558U
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Abstract
The utility model discloses equipment for measuring Flicker degrees of liquid crystal modules. The equipment comprises a main unit; the main unit comprises a signal processing circuit board; the signal processing circuit board comprises a display substrate and a main substrate, and the display substrate is electrically connected with the main substrate by a flexible flat cable; and the main substrate comprises a Flicker degree AC quantity acquisition module, a Flicker degree DC quantity acquisition module, an analog-digital conversion module, a CPU (central processing unit) processing module, an option switch module, a communication module and a digital display module. The equipment has the advantages that measured signals are stable owing to an RMS (root-mean-square) technology for processing the signals, the equipment is high in precision and can accurately and stably measure Flicker degree values, the minimum Flicker values measured by the equipment are consistent with visual perception of people, and the accuracy of measured data is effectively guaranteed when the equipment measures the data from a great distance in a non-contact manner.
Description
Technical field
The utility model relates to a kind of liquid crystal module sensing equipment, and is particularly a kind of for the equipment of measuring liquid crystal module Flicker flicker degree.
Background technology
Liquid crystal module is when display frame, determined by principle of work, always there is Flicker scintillation to a certain degree, and Flicker flicker degree is when big, can cause people's visual fatigue and other discomfort, thus before dispatching from the factory, must measure the Flicker flicker degree of every liquid crystal module, and according to measured value, regulate correlation parameter, make Flicker flicker degree drop to minimum value.
The larger production firm of part adopts the import optical detection apparatus to carry out the FLICKER detection of liquid crystal module both at home and abroad at present, its unit price costliness, volume is bigger, and production line need detect each piece liquid crystal module, to being in great demand of equipment, equipment drops into very high, and general company can't bear.
In the past few years, some also having occurred can be at the FLICKER of production line application pick-up unit, but there are larger difference in its spectral responsivity scope and human eye photopic vision spectrum efficiency function, so just bring the inaccurate of measurement result, be difficult to find the minimum value of Flicker, and being easy to be subjected to the interference of extraneous veiling glare, the reverse-examination rate is very high.In the machine handoff procedure, must remodify software and hardware in addition, to be fit to the requirement of this liquid crystal module.
The utility model content
The technical problems to be solved in the utility model provides for the equipment of measuring liquid crystal module Flicker flicker degree; This equipment is handled at signal and has been adopted the RMS technology to make that the signal that records is more stable, precision is higher, can be accurately stable measurement Flicker flicker degree value, the Flicker minimum value that equipment records is consistent with people's visual experience, and has guaranteed to record the accurate of data when the noncontact telemeasurement effectively.
For solving the problems of the technologies described above, the utility model adopts following technical proposals:
A kind of described equipment comprises main frame for the equipment of measuring liquid crystal module Flicker flicker degree, and this main frame comprises signal processing circuit board;
Described signal processing circuit board comprises display base plate and main substrate, is electrically connected by flexible flat cable between display base plate and the main substrate;
Described main substrate comprises Flicker flicker degree AC amount acquisition module, Flicker flicker degree DC amount acquisition module, analog-to-digital conversion module, CPU processing module, selector switch module, communication module and digital display module;
Described analog-to-digital conversion module, selector switch module, communication module and digital display module are connected with described CPU processing module respectively;
Described Flicker flicker degree DC amount acquisition module is connected with described analog-to-digital conversion module; Described Flicker flicker degree AC amount acquisition module is connected with frequency selection circuit, and frequency selection circuit is connected with described analog-to-digital conversion module by the RMS treatment circuit.
The separating of the complete Flicker flicker degree AC of described analog-to-digital conversion module, Flicker flicker degree AC amount acquisition module and the common composition of Flicker flicker degree DC amount acquisition module and DC, collection and preprocessing function; The utility model is handled the RMS technology that adopted at signal, the RMS(real effective) is measuring substantially the AC signal amplitude, the real effective of an AC signal equals to produce the required DC quantity of equal heat in same load, namely in the utility model, be that the light signal of flicker is become AC signal earlier, again AC signal is transformed into the direct current signal co-energy with it, makes that the signal that records is more stable, precision is higher;
Function that communication module can be used for program on-line upgrading, realization in real time and inspection machine links;
Digital display module is used for showing in real time Flicker flicker number of degrees value, survey frequency, criterion of acceptability.
Further, described main frame comprises a housing, and described case cover is located at outside the described signal processing circuit board, is provided with power supply board between the base plate of described main substrate and described housing, this power supply board is connected by cable with described main substrate, and power supply board provides power supply for whole main frame.
Further, described display base plate is provided with 15 and is the light emitting diode of U-shaped curved arrangement and four LED charactron.
Further, described equipment also comprises optic probe, and described optic probe is connected with signal processing circuit board by shielding line.
Principle of work of the present utility model is as follows:
Main frame comprises signal processing circuit board, and described signal processing circuit board comprises display base plate and main substrate; Optic probe is used for realizing the acquisition function of data, and main substrate and display base plate are used for realizing the functions such as access, communication, control and demonstration of data.
It is the processing of circuit mode of core that main substrate has adopted CPU processing module+alternating current-direct current separation circuit+frequency selection circuit+RMS treatment circuit+A/D change-over circuit+display circuit+telecommunication circuit, cooperates hardware systems such as corresponding ROM, RAM; Wherein the CPU processing module adopts arm processor.
The light signal that LCD module under test sends converts electric signal to via the photoelectric probe that meets luminosity function, is sent to the alternating current-direct current separation circuit, and it is divided into the different signal of two-way with the AC compounent in the Flicker signal and DC component.DC component is sent into after the digitizing in the CPU processing module and is analyzed as basis signal; AC compounent is admitted in the frequency selection circuit, sends in the RMS treatment circuit after bypassing other frequency signal, extracts the effective value of AC signal, sends into after the digitizing in the CPU processing module, and comprehensive alternating current-direct current analysis result calculates the Flicker value of liquid crystal module.
In sum, photosignal is analyzed with processing procedure in, come the liquid crystal module of corresponding different operating frequency because having adopted frequency-selecting technology, the Flicker flicker degree raw data that records carried out transform analysis, reduction; The accurate of data, the Flicker flicker degree that the equipment that makes records and the visual experience basically identical of human eye when the noncontact telemeasurement, have been guaranteed to record effectively.
The utility model is compared with existing product, has following actively useful effect:
1, cost is low, approximately has only about 1/2nd of import equipment, and general manufacturer can bear.Its volume has only about 1/4th of import equipment, is easy to carry.
2, effectively eliminate because of human factor and cause inconsistent to Flicker minimum value discrimination standard.
3, equipment aims at measurement liquid crystal module Flicker flicker degree and designs the visual effect basically identical of the Flicker flicker degree that records and human eye.
4, when the noncontact telemeasurement, measuring distance guarantees that data are accurate during smaller or equal to 100mm.
5, the utility model is handled the RMS technology that adopted at signal, the RMS(real effective) is measuring substantially the AC signal amplitude, the real effective of an AC signal equals to produce the required DC quantity of equal heat in same load, namely in the utility model, be that the light signal of flicker is become AC signal earlier, again AC signal is transformed into the direct current signal co-energy with it, makes that the signal that records is more stable, precision is higher.
Description of drawings
Fig. 1 is the surface structure synoptic diagram of main frame in the utility model.
Fig. 2 is the whole decomposition texture synoptic diagram of main frame in the utility model.
Fig. 3 is the structured flowchart of main substrate in the utility model.
Embodiment
Below in conjunction with description of drawings embodiment of the present utility model.
As shown in Figures 1 to 3, present embodiment provides a kind of equipment for mensuration liquid crystal module Flicker flicker degree, and it comprises main frame 1 and optic probe 3, and described main frame 1 comprises signal processing circuit board and housing 2; Described optic probe 1 is the high performance signal cable by shielding line 4() be connected with signal processing circuit board.
Described signal processing circuit board comprises display base plate 11 and main substrate 12, is electrically connected by flexible flat cable between display base plate 11 and the main substrate 12; Described display base plate 11 is provided with 15 and is the light emitting diode 111 of U-shaped curved arrangement and four LED charactron 112.
Described main substrate 12 comprises Flicker flicker degree AC amount acquisition module 121, Flicker flicker degree DC amount acquisition module 122, analog-to-digital conversion module 123, CPU processing module 124, selector switch module 125, communication module 126 and digital display module 127;
Described analog-to-digital conversion module 123, selector switch module 125, communication module 126 and digital display module 127 are connected with described CPU processing module 124 respectively;
Described Flicker flicker degree DC amount acquisition module 122 is connected with described analog-to-digital conversion module 123; Described Flicker flicker degree AC amount acquisition module 121 is connected with frequency selection circuit 128, and frequency selection circuit 128 is connected with described analog-to-digital conversion module 123 by RMS treatment circuit 129.
In concrete enforcement, optic probe 3 is used for realizing the acquisition function of data, and main substrate 12 and display base plate 11 are used for realizing the functions such as access, communication, control and demonstration of data.The signal that optic probe is gathered is the high performance signal cable by shielding line 4() send the measurement that main frame is realized Flicker to.
It is the processing of circuit mode of core that main substrate 12 has adopted CPU processing module+alternating current-direct current separation circuit+frequency selection circuit+RMS treatment circuit+A/D change-over circuit+display circuit+telecommunication circuit, cooperates hardware systems such as corresponding ROM, RAM; Wherein the CPU processing module adopts arm processor.The light signal that LCD module under test 5 sends converts electric signal to via the photoelectric probe 3 that meets luminosity function, is sent to the alternating current-direct current separation circuit, and it is divided into the different signal of two-way with the AC compounent in the Flicker signal and DC component.DC component is sent into after the digitizing in the CPU processing module and is analyzed as basis signal; AC compounent is admitted in the frequency selection circuit, sends in the RMS treatment circuit after bypassing other frequency signal, extracts the effective value of AC signal, sends into after the digitizing in the CPU processing module, and comprehensive alternating current-direct current analysis result calculates the Flicker value of liquid crystal module.
The word in the description orientation that adopts herein " on ", D score, " left side ", " right side " etc. all be for the convenience that illustrates based on the orientation shown in the drawing in the accompanying drawing, these orientation may be because the disposing way of device and different in actual device.
In sum, embodiment described in the utility model only provides a kind of embodiment of the best, technology contents of the present utility model and technical characterstic disclose as above, however the content that the personage who is familiar with this technology still may disclose based on the utility model and do various replacement and the modifications that do not deviate from the utility model creation spirit; Therefore, protection domain of the present utility model is not limited to the technology contents that embodiment discloses, so all equivalences of doing according to shape of the present utility model, structure and principle change, all is encompassed in the protection domain of the present utility model.
Claims (4)
1. equipment of be used for measuring liquid crystal module Flicker flicker degree, it is characterized in that: described equipment comprises main frame (1), this main frame (1) comprises signal processing circuit board;
Described signal processing circuit board comprises display base plate (11) and main substrate (12), is electrically connected by flexible flat cable between display base plate (11) and the main substrate (12);
Described main substrate (12) comprises Flicker flicker degree AC amount acquisition module (121), Flicker flicker degree DC amount acquisition module (122), analog-to-digital conversion module (123), CPU processing module (124), selector switch module (125), communication module (126) and digital display module (127);
Described analog-to-digital conversion module (123), selector switch module (125), communication module (126) and digital display module (127) are connected with described CPU processing module (124) respectively;
Described Flicker flicker degree DC amount acquisition module (122) is connected with described analog-to-digital conversion module (123); Described Flicker flicker degree AC amount acquisition module (121) is connected with frequency selection circuit (128), and frequency selection circuit (128) is connected with described analog-to-digital conversion module (123) by RMS treatment circuit (129).
2. according to claim 1 a kind of for the equipment of measuring liquid crystal module Flicker flicker degree, it is characterized in that: described main frame (1) comprises a housing (2), described housing (2) is located at outside the described signal processing circuit board, be provided with power supply board (13) between the base plate of described main substrate (12) and described housing (2), this power supply board (13) is connected by cable with described main substrate (12).
3. according to claim 1 a kind of for the equipment of measuring liquid crystal module Flicker flicker degree, it is characterized in that: described display base plate (11) is provided with 15 and is the light emitting diode (111) of U-shaped curved arrangement and four LED charactron (112).
4. according to claim 1 a kind of it is characterized in that: described equipment also comprises optic probe (3) for the equipment of measuring liquid crystal module Flicker flicker degree, and described optic probe (3) passes through shielding line (4) and is connected with signal processing circuit board.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320185733 CN203164558U (en) | 2013-04-12 | 2013-04-12 | Equipment for measuring Flicker degrees of liquid crystal modules |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320185733 CN203164558U (en) | 2013-04-12 | 2013-04-12 | Equipment for measuring Flicker degrees of liquid crystal modules |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203164558U true CN203164558U (en) | 2013-08-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320185733 Expired - Lifetime CN203164558U (en) | 2013-04-12 | 2013-04-12 | Equipment for measuring Flicker degrees of liquid crystal modules |
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| Country | Link |
|---|---|
| CN (1) | CN203164558U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108871567A (en) * | 2018-07-13 | 2018-11-23 | 吉林医药学院 | Light quality detector and its stroboscopic detection method |
-
2013
- 2013-04-12 CN CN 201320185733 patent/CN203164558U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108871567A (en) * | 2018-07-13 | 2018-11-23 | 吉林医药学院 | Light quality detector and its stroboscopic detection method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: 215000 Qingqiu Lane 8, Suzhou Industrial Park, Suzhou City, Jiangsu Province Patentee after: SUZHOU HYC TECHNOLOGY Co.,Ltd. Address before: 215011 No. 16 Lingyan Street, Suzhou High-tech Zone, Jiangsu Province Patentee before: SUZHOU HYC ELECTRONIC TECHNOLOGY Co.,Ltd. |
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| CP03 | Change of name, title or address | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130828 |
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| CX01 | Expiry of patent term |