CN205247871U - Liquid crystal display control assembly test system - Google Patents
Liquid crystal display control assembly test system Download PDFInfo
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- CN205247871U CN205247871U CN201520776050.9U CN201520776050U CN205247871U CN 205247871 U CN205247871 U CN 205247871U CN 201520776050 U CN201520776050 U CN 201520776050U CN 205247871 U CN205247871 U CN 205247871U
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- liquid crystal
- crystal display
- display control
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Abstract
The utility model discloses a liquid crystal display control assembly test system, including the computer, characterized by: the computer passes through the USB cable junction testboard, the testboard passes through test cable and connects liquid crystal display control assembly, digital multimeter able to programme and oscilloscope are still connected to the testboard. The utility model discloses a computer passes through the USB interface and is connected with the testboard to control whole test procedure, digital multimeter able to programme can be completely treats according to the test program that CMM provided and repaiies the piece and carry out complete functional test, and the testboard adopts high accuracy FPAG chip control relay unit able to programme, can the response test instruction of accurate high -efficient ground, improved efficiency of software testing and accuracy.
Description
Technical field
The utility model relates to testing arrangement field, specifically, relates to a kind of liquid crystal display Control Component test macro.
Background technology
The higher parts of offline inspection most more complicated, particularly functional integration of air environment, test need to be simulated various signals to meet crosslinking component environment on machine, and liquid crystal display Control Component (LCDU) just belongs to this base part. LCDU is the main thoroughfare that airborne computer and airplane operation person link up, the important system component communications such as LCDU and Flight Management Computer, aircraft communication addressing and reporting system, satellite communication system, data acquisition component, it is very difficult realizing its offline functionality test. If buying state exogenesis plant, cycle is long, expense is high, and due to blockade on new techniques, be unfavorable for the maintaining of equipment and the raising of R & D Level, so determine to adopt the method for test automatically to realize working environment on LCDU machine, by computer simulation interconnected system, complete detection and the maintenance work of LCDU.
Summary of the invention
The technical problems to be solved in the utility model is to provide a kind of liquid crystal display Control Component test macro, realizes the functional test of liquid crystal display Control Component.
The utility model adopts following technical scheme to realize goal of the invention:
A kind of liquid crystal display Control Component test macro, comprise computer, it is characterized in that: described computer is by USB cable connecting test platform, and described testboard connects liquid crystal display Control Component by test cable, and described testboard also connects programmable digital multimeter and oscillograph.
As the further restriction to the technical program, described testboard comprises cabinet, in described cabinet, be provided with control circuit, described control circuit comprises usb signal processing unit, described usb signal processing unit connects usb signal decoding unit, described usb signal decoding unit connects CPLD control module, and described CPLD control module connects relay drive unit, and described relay drive unit connects relay unit.
As the further restriction to the technical program, described usb signal processing unit adopts AN2131SC chip; Described signal decoding unit adopts chip 24LC32; Described CPLD control module adopts chip EPM7128SLC84-15N, and described relay drive unit adopts chip MC1413D.
As the further restriction to the technical program, described cabinet adopts standard 4U panel.
As the further restriction to the technical program, described cabinet comprises front panel and rear board, is provided with direct current 28V power switch, exchanges 115V power switch, ARINC429 DATA REASONING port, oscillograph connecting interface one and 50 core aviation plugs on described front panel; On described rear board, be provided with ARINC429 data sending terminal mouth, ARINC429 data receiver port, 28V power interface, exchange 115V electricity Yuan Jiekou USB interface and oscillograph connecting interface two.
As the further restriction to the technical program, described ARINC429 DATA REASONING port connects described programmable digital multimeter, and described oscillograph connecting interface one is connected described oscillograph with oscillograph connecting interface two.
Compared with prior art, advantage of the present utility model with good effect is: computer of the present utility model is connected with testboard by USB interface, and control whole test process, the test program that programmable digital multimeter can provide according to CMM completely carries out complete functional test to be repaired, testboard adopts high-precision programmable FPAG chip controls relay unit, accurately response test instruction efficiently, has improved testing efficiency and accuracy.
Brief description of the drawings
Fig. 1 is functional-block diagram of the present utility model.
Fig. 2 is the functional-block diagram of testboard of the present utility model.
Fig. 3 is the structure chart of front panel of the present utility model.
Fig. 4 is the structure chart of rear board of the present utility model.
In figure, 1, front panel, 2, rear board, 3, direct current 28V power switch, 4, exchange 115V power switch, 5, ARINC429 DATA REASONING port, 6, oscillograph connecting interface one, 7,50 core aviation plugs, 8, ARINC429 data sending terminal mouth, 9, ARINC429 data receiver port, 10,28V power interface, 11, exchange 115V power interface, 12, USB interface, 13, oscillograph connecting interface two.
Detailed description of the invention:
Below in conjunction with accompanying drawing and preferred embodiment, the utility model is further described in detail.
Referring to Fig. 1-Fig. 4, the utility model comprises computer, and described computer is by USB cable connecting test platform, and described testboard connects liquid crystal display Control Component by test cable, and described testboard also connects programmable digital multimeter and oscillograph.
Described testboard comprises cabinet, in described cabinet, be provided with control circuit, described control circuit comprises usb signal processing unit, described usb signal processing unit connects usb signal decoding unit, described usb signal decoding unit connects CPLD control module, described CPLD control module connects relay drive unit, and described relay drive unit connects relay unit.
Described usb signal processing unit adopts AN2131SC chip; Described usb signal decoding unit adopts chip 24LC32; Described CPLD control module adopts chip EPM7128SLC84-15N, and described relay drive unit adopts chip MC1413D.
Described cabinet adopts standard 4U panel.
Described cabinet comprises front panel and rear board, is provided with direct current 28V power switch, exchanges 115V power switch, ARINC429 DATA REASONING port, oscillograph connecting interface one and 50 core aviation plugs on described front panel; On described rear board, be provided with ARINC429 data sending terminal mouth, ARINC429 data receiver port, 28V power interface, exchange 115V electricity Yuan Jiekou USB interface and oscillograph connecting interface two. 50 core aviation plugs connect liquid crystal display Control Component, and 28V power interface connects 28V dc source, or exchange 115V power interface connection 115V alternating current, are used to testboard power supply, and have corresponding insurance FUSE1 and FUSE2 that short-circuit protection is provided.
This testboard is according to LCDUCMM handbook (ATA:34-61-14, P/N:174101-0X-01) design, be one for liquid crystal control display module (LiquidCrystalDisplayControlDisplayUnit, be called for short LCDU, and the testboard of exploitation and composition can complete the test job to corresponding to be repaired PN:174101-0X-01).
Computer is connected with testboard by USB interface, and controls whole test process. The design uses AN2131SC chip as USB coding chip, and its hardware access program is stored in eeprom chip 24LC32. The input of CPLD control module is from USB coding chip 24LC32, by address signal AD[0..6] and data-signal D[0..6] carry out respectively address realm verification and error checking, if correctly allow CPLD output.
After hardware design completes, form PCB circuit board, be installed in standard 4U cabinet. Testing software designs according to CMM handbook and ATLAS, meets ARINC739 communication protocol standard, can simulate communications status on LCDU machine completely, realizes LCDU functional test needs.
Claims (6)
1. a liquid crystal display Control Component test macro, comprise computer, it is characterized in that: described computer is by USB cable connecting test platform, and described testboard connects liquid crystal display Control Component by test cable, and described testboard also connects programmable digital multimeter and oscillograph.
2. liquid crystal display Control Component test macro according to claim 1, it is characterized in that: described testboard comprises cabinet, in described cabinet, be provided with control circuit, described control circuit comprises usb signal processing unit, described usb signal processing unit connects usb signal decoding unit, described usb signal decoding unit connects CPLD control module, and described CPLD control module connects relay drive unit, and described relay drive unit connects relay unit.
3. liquid crystal display Control Component test macro according to claim 2, is characterized in that: described usb signal processing unit adopts AN2131SC chip; Described signal decoding unit adopts chip 24LC32; Described CPLD control module adopts chip EPM7128SLC84-15N, and described relay drive unit adopts chip MC1413D.
4. liquid crystal display Control Component test macro according to claim 2, is characterized in that: described cabinet adopts standard 4U panel.
5. liquid crystal display Control Component test macro according to claim 4, it is characterized in that: described cabinet comprises front panel and rear board, on described front panel, be provided with direct current 28V power switch, exchange 115V power switch, ARINC429 DATA REASONING port, oscillograph connecting interface one and 50 core aviation plugs; On described rear board, be provided with ARINC429 data sending terminal mouth, ARINC429 data receiver port, 28V power interface, exchange 115V electricity Yuan Jiekou USB interface and oscillograph connecting interface two.
6. liquid crystal display Control Component test macro according to claim 5, is characterized in that: described ARINC429 DATA REASONING port connects described programmable digital multimeter, and described oscillograph connecting interface one is connected described oscillograph with oscillograph connecting interface two.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520776050.9U CN205247871U (en) | 2015-10-09 | 2015-10-09 | Liquid crystal display control assembly test system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520776050.9U CN205247871U (en) | 2015-10-09 | 2015-10-09 | Liquid crystal display control assembly test system |
Publications (1)
| Publication Number | Publication Date |
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| CN205247871U true CN205247871U (en) | 2016-05-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201520776050.9U Active CN205247871U (en) | 2015-10-09 | 2015-10-09 | Liquid crystal display control assembly test system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106802649A (en) * | 2017-03-10 | 2017-06-06 | 山东翔宇航空技术服务有限责任公司 | Aircraft fuel oil control panel automatic testing stand |
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2015
- 2015-10-09 CN CN201520776050.9U patent/CN205247871U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106802649A (en) * | 2017-03-10 | 2017-06-06 | 山东翔宇航空技术服务有限责任公司 | Aircraft fuel oil control panel automatic testing stand |
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