CN209571216U - A kind of LED display mould group automatic white balance debugging system - Google Patents
A kind of LED display mould group automatic white balance debugging system Download PDFInfo
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- CN209571216U CN209571216U CN201920383161.1U CN201920383161U CN209571216U CN 209571216 U CN209571216 U CN 209571216U CN 201920383161 U CN201920383161 U CN 201920383161U CN 209571216 U CN209571216 U CN 209571216U
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Abstract
A kind of LED display mould group automatic white balance debugging system of the utility model belongs to LED display mould group automatic white balance debugging system technical field；Technical problem to be solved are as follows: a kind of LED display mould group automatic white balance debugging system is provided；Solve the technical solution of technical problem use are as follows: including central controller, the signal output end concatenation RGB brightness debugging resistance of the central controller is connected with the resistance of LED module debugging end, the signal output end of the LED module is connected with signal conditioning module, the signal output end of the signal conditioning module is connected with voltage data acquisition module, and the signal output end of the voltage data acquisition module is connected by usb bus with central controller；The central controller also passes through usb bus and is connected with color luminance meter；The central controller is also connected with display screen, keyboard, printer by conducting wire；The utility model is applied to debugging LED display.
Description
Technical field
A kind of LED display mould group automatic white balance debugging system of the utility model, it is automatically white to belong to LED display mould group
Balance adjustment systems technology field.
Background technique
LED display mould group because different batches lamp bead parameter is variant, is needed through white balance debugging work before manufacture
Skill determines the resistance that IC element is driven in LED display mould group, the drive of the size control driving IC output of the resistance
The size of current of dynamic LED lamp bead drives the size of current of LED lamp bead to determine the light emission luminance of LED lamp bead, then in production will
The resistance that resistance value is determined by white balance debugging technique is welded on PCB corresponding position using SMT technique, is realized and is adjusted
The purpose of LED display mould group white balance.
LED display mould group white balance debugging technique is generally manual operation, needs using accurate variable resistance box, colour
Luminance meter and special purpose computer manually carry out white balance debugging in darkroom, and debugging process is more complicated, to debugging technical staff
Skills and experience it is more demanding, and influence adjustment accuracy factor it is more, debugging efficiency is lower.
Utility model content
The utility model is in order to overcome the deficiencies in the prior art, technical problem to be solved are as follows: provide one kind
LED display mould group automatic white balance debugging system；In order to solve the above-mentioned technical problem, the technical solution adopted in the utility model
Are as follows: a kind of LED display mould group automatic white balance debugging system, including central controller, the signal of the central controller are defeated
Outlet concatenation RGB brightness debugging resistance is connected with the resistance of LED module debugging end, the signal output end and letter of the LED module
Number conditioning module is connected, and the signal output end of the signal conditioning module is connected with voltage data acquisition module, the voltage number
It is connected by usb bus with central controller according to the signal output end of acquisition module；
The central controller also passes through usb bus and is connected with color luminance meter；
The central controller is also connected with display screen, keyboard, printer by conducting wire；
The chip that the signal conditioning module uses is that line driving chip U1 and column driving chip U2, the voltage data are adopted
Integrate the chip that module uses as amplifier U3 and AD conversion module；The electricity of the signal conditioning module and voltage data acquisition module
Line structure are as follows:
The power end of the line driving chip U1 is connected with 5V input power, the output end concatenation of the line driving chip U1
It is connected after light emitting diode D1 with one end of sampling resistor R1, the other end of the sampling resistor R1 is defeated with column driving chip U2's
Outlet is connected, and the both ends of the sampling resistor R1 are connected with two input terminals of amplifier U3, the output end of the amplifier U3
It is connected with AD conversion module, the output end of the AD conversion module is connected by usb bus with central controller.
Chip pin pad is drawn at the both ends of the sampling resistor R1 respectively, the chip pin pad by conducting wire with
The signal output end of LED module is connected.
The model NI-9205 of the voltage data acquisition module.
It is a kind of dedicated white flat that the utility model had compared with the existing technology has the beneficial effect that the utility model provides
Weigh debugging control device, by built-in precision resister debugging module, constructs historical data base, uses signal conditioning module and voltage
The voltage and luminance parameter of data collecting module collected lamp bead, when the lamp bead parameter of input is inquired as the used lamp bead of history
When, the resistance value that precision resister debugging module output history uses can be directly controlled, white parameter qualification is measured, can directly use
Resistance value production, whole process do not require commissioning staff to grasp complicated analysis ability and computing capability, can effectively shorten
The white balance debugging time effectively promotes debugging efficiency and adjustment accuracy；In addition system is circumscribed with printer, facilitates test report certainly
Dynamic to generate, printout reduces the time of hand filling record.
Detailed description of the invention
The utility model is described further with reference to the accompanying drawing:
Fig. 1 is the electrical block diagram of the utility model；
Fig. 2 is the circuit diagram of the utility model voltage data acquisition module；
In figure: 1 being central controller, 2 be LED module, 3 be signal conditioning module, 4 be voltage data acquisition module, 5 be
Color luminance meter, 6 be display screen, 7 be keyboard, 8 be printer.
Specific embodiment
As depicted in figs. 1 and 2, a kind of LED display mould group automatic white balance debugging system of the utility model, including center
Controller 1, the signal output end concatenation RGB brightness debugging resistance of the central controller 1 and the resistance of LED module 2 debug end
It is connected, the signal output end of the LED module 2 is connected with signal conditioning module 3, the signal output of the signal conditioning module 3
End is connected with voltage data acquisition module 4, and the signal output end of the voltage data acquisition module 4 passes through usb bus and center
Controller 1 is connected；
The central controller 1 is also connected by usb bus with color luminance meter 5；
The central controller 1 is also connected with display screen 6, keyboard 7, printer 8 by conducting wire；
The chip that the signal conditioning module 3 uses is line driving chip U1 and column driving chip U2, the voltage data
The chip that acquisition module 4 uses is amplifier U3 and AD conversion module；The signal conditioning module 3 and voltage data acquisition module
4 circuit structure are as follows:
The power end of the line driving chip U1 is connected with 5V input power, the output end concatenation of the line driving chip U1
It is connected after light emitting diode D1 with one end of sampling resistor R1, the other end of the sampling resistor R1 is defeated with column driving chip U2's
Outlet is connected, and the both ends of the sampling resistor R1 are connected with two input terminals of amplifier U3, the output end of the amplifier U3
It is connected with AD conversion module, the output end of the AD conversion module is connected by usb bus with central controller 1.
Chip pin pad is drawn at the both ends of the sampling resistor R1 respectively, the chip pin pad by conducting wire with
The signal output end of LED module 2 is connected.
The model NI-9205 of the voltage data acquisition module 4.
Debugging system provided by the utility model is constructed based on virtual instrument technology, and key hardware uses common hardware mould
Block, major parameter precision is high, and hardware effort is stablized.
The central controller is the core of system, realizes function control to each hardware module, data I/O, analysis meter
The institute such as calculation, human-computer interaction, printing is functional；Precision resister debugging module (pci card) is used inside the central controller, In
Resistance value needed for RGB brightness resistance can be provided as LED display mould group using 2 Ω steppings under the control of central controller.
Current signal is converted to voltage signal, electricity by signal conditioning circuit by the RGB electric current of the LED module output
Pressure signal can be used voltage data capture card and be acquired, and the voltage data acquisition module leads to the voltage value data of conversion
It crosses usb bus and is transferred to central controller, central controller is acquired processing to data and current value, center control is calculated
Device controls voltage data acquisition module by usb bus and completes A/D conversion and data transmission.
As shown in Fig. 2, specially current measurement circuit, since sampling resistor both ends are without the end GND, it is necessary to use NI-9205
The Differential Input functional measurement voltage of the voltage data acquisition module of model；Wherein column driving chip U2 pin is maintained at GND
>=0.7V, by maximum current 22mA calculate, sampling resistor maximum pressure drop≤0.8V, sampling resistor use 36.5 Ω, 0.1% precision,
1/8W straight cutting resistance；Voltage data acquisition module range use ± 1V, voltage sample precision are 0.031mV, be can satisfy white flat
The requirement of weighing apparatus debugging testing current precision ± 0.1mA.
The utility model connects central controller by usb bus using color luminance meter, and central controller can be to coloured silk
Colour brightness meter control and be read out to measurement data；It is identical as manual debugging white balance, by controlling central controller
And corresponding network-control receives card, and LED module can be made to show RGBW monochrome debugging pictures.
Color luminance meter in system can accurately be measured white balance photoelectric parameter, be used reference instrument using reference instrument
Realize the optical parameter of automatic measurement LED module, measurement parameter includes RGB monochromatic brightness, RGB monochrome chromaticity coordinates, white
Colour brightness, white chromaticity coordinates and colour temperature.
Universal Database and corresponding control module built in the central controller are realized and test white balance number to LED module
According to the common functions such as storage, inquiry.
Control module, current measurement module, brightness control module, database, inquiry are provided in the central controller
Functional module based on module is called for manual debugging function, calculating and analysis two functional modules of processing function, with complete
It is debugged manually at system and automatic debugging function.
The utility model is realized using normal color luminance meter to LED by building LED display mould group debugging system
The measurement of mould group brightness data, white balance resistance control resistance value required for it is exported using precision resister debugging module, from
And LED module monochromatic brightness is controlled, it is accurately surveyed using the Differential Input mode and signal conditioning circuit of voltage data acquisition module
Measure the electric current in LED lamp bead control loop.
Finally, it should be noted that the above various embodiments is only to illustrate the technical solution of the utility model, rather than it is limited
System；Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should
Understand: it is still possible to modify the technical solutions described in the foregoing embodiments, or to some or all of
Technical characteristic is equivalently replaced；And these are modified or replaceed, it does not separate the essence of the corresponding technical solution, and this is practical new
The range of each embodiment technical solution of type.
Claims (3)
1. a kind of LED display mould group automatic white balance debugging system, it is characterised in that: including central controller (1), it is described in
The signal output end concatenation RGB brightness debugging resistance of centre controller (1) is connected with the resistance of LED module (2) debugging end, described
The signal output end of LED module (2) is connected with signal conditioning module (3), the signal output end of the signal conditioning module (3) with
Voltage data acquisition module (4) is connected, and the signal output end of the voltage data acquisition module (4) passes through usb bus and center
Controller (1) is connected；
The central controller (1) is also connected by usb bus with color luminance meter (5)；
The central controller (1) is also connected with display screen (6), keyboard (7), printer (8) by conducting wire；
The chip that the signal conditioning module (3) uses is that line driving chip U1 and column driving chip U2, the voltage data are adopted
Integrate the chip that module (4) uses as amplifier U3 and AD conversion module；The signal conditioning module (3) and voltage data acquire mould
The circuit structure of block (4) are as follows:
The power end of the line driving chip U1 is connected with 5V input power, and the output end concatenation of the line driving chip U1 shines
It is connected after diode D1 with one end of sampling resistor R1, the other end of the sampling resistor R1 and the output end of column driving chip U2
It is connected, the both ends of the sampling resistor R1 are connected with two input terminals of amplifier U3, the output end and AD of the amplifier U3
Conversion module is connected, and the output end of the AD conversion module is connected by usb bus with central controller (1).
2. a kind of LED display mould group automatic white balance debugging system according to claim 1, it is characterised in that: described
Chip pin pad is drawn at the both ends of sampling resistor R1 respectively, and the chip pin pad passes through the letter of conducting wire and LED module (2)
Number output end is connected.
3. a kind of LED display mould group automatic white balance debugging system according to claim 2, it is characterised in that: described
The model NI-9205 of voltage data acquisition module (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920383161.1U CN209571216U (en) | 2019-03-25 | 2019-03-25 | A kind of LED display mould group automatic white balance debugging system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920383161.1U CN209571216U (en) | 2019-03-25 | 2019-03-25 | A kind of LED display mould group automatic white balance debugging system |
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| Publication Number | Publication Date |
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| CN209571216U true CN209571216U (en) | 2019-11-01 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109949726A (en) * | 2019-03-25 | 2019-06-28 | 山西高科华瑞电子科技有限公司 | A kind of LED display mould group automatic white balance debugging system and adjustment method |
-
2019
- 2019-03-25 CN CN201920383161.1U patent/CN209571216U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109949726A (en) * | 2019-03-25 | 2019-06-28 | 山西高科华瑞电子科技有限公司 | A kind of LED display mould group automatic white balance debugging system and adjustment method |
| CN109949726B (en) * | 2019-03-25 | 2024-05-14 | 山西高科华瑞电子科技有限公司 | Automatic white balance debugging system and method for LED display screen module |
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Granted publication date: 20191101 |