CN103105544B - Method, device and system for testing display panel of air conditioner - Google Patents
Method, device and system for testing display panel of air conditioner Download PDFInfo
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- CN103105544B CN103105544B CN201110357966.7A CN201110357966A CN103105544B CN 103105544 B CN103105544 B CN 103105544B CN 201110357966 A CN201110357966 A CN 201110357966A CN 103105544 B CN103105544 B CN 103105544B
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Abstract
The invention discloses a method, a device and a system for testing a display panel of an air conditioner. The testing device of the invention comprises a control unit; a first detecting unit connected between the control unit and the display panel to be tested for generating a detecting signal according to the control signal from the control unit and detecting the display panel to be tested according to the detecting signal; and the second detection unit is connected between the control unit and the display panel to be tested and used for monitoring the signal quantity change of the display panel to be tested to obtain detection data and sending the detection data to the control unit, wherein the first detection module comprises a remote detection module which is used for simulating a remote control system to detect the display panel to be tested.
Description
Technical field
The present invention relates to air conditioner field, in particular to a kind of method of testing, Apparatus and system of display panel of air-conditioner.
Background technology
Display board at present on air conditioner of base station, its specification is black and white lattice liquid crystal, and this display board has display, button is selected, control (controlling air-conditioning internal-external machine by selected function operation) function; Tester need operate produced display board and test its automatically, refrigeration, dehumidifier, blow, whether normally the control signal such as to heat, whether normally need to test separately remote monitoring function in addition; But existing this kind of test fixture is outmoded, do not possess remote monitoring function test, automaticity is not high, needs off-line to be used alone computer to complete communication function test.
For the problem needing in correlation technique to test the remote monitoring function of display panel of air-conditioner separately, at present effective solution is not yet proposed.
Summary of the invention
Fundamental purpose of the present invention is the method for testing providing a kind of display panel of air-conditioner, to solve in prior art the problem needing to test the remote monitoring function of display panel of air-conditioner separately.
To achieve these goals, according to an aspect of the present invention, provide a kind of method of testing of display panel of air-conditioner, comprising: proving installation generates detection signal; Proving installation detects tested display board according to detection signal; And proving installation monitors the semaphore change of tested display board to obtain detecting data, wherein, proving installation carries out detection according to detection signal to tested display board and comprises: proving installation simulation tele-control system detects tested display board.
Further, proving installation comprises: communicating circuit, and proving installation simulation tele-control system carries out detection to tested display board and comprises: communicating circuit is resolved the detection signal of proving installation according to communications protocol and exported remote detection signal to detect tested display board.
To achieve these goals, according to a further aspect in the invention, provide a kind of proving installation of display panel of air-conditioner, comprising: control module; First detecting unit, is connected between control module and tested display board, for generating detection signal according to the control signal from control module, and detects tested display board according to detection signal; And second detecting unit, be connected between control module and tested display board, for monitoring the semaphore change of tested display board to obtain detecting data, and detection data are sent to control module, wherein, first detecting unit comprises remote detection module, and remote detection module detects tested display board for simulating tele-control system.
Further, the first detecting unit comprises: digital signal output modules, generates digital quantity detection signal, and digital quantity detection signal is sent to tested display board for the control signal according to control module; And analog signal output module, generate analog quantity signal for the control signal according to control module, and analog quantity signal is sent to tested display board.
Further, digital signal output modules comprises: the first optical coupling isolation circuit, for carrying out light-coupled isolation to digital quantity detection signal.
Further, analog signal output module comprises: the first analogue quantity output circuit, and for exporting the first operating condition data of tested display board, wherein, the first operating condition data are the indoor temperature parameter of tested display board when being in guard mode; And second analogue quantity output circuit, for exporting the second operating condition data of tested display board, wherein, the second operating condition data are the pipe temperature parameter of tested display board when being in guard mode.
Further, remote detection module comprises: communicating circuit, is connected with control module, exports remote detection signal for the control signal of resolving control module according to communications protocol; And second optical coupling isolation circuit, be connected between communicating circuit and tested display board, for carrying out light-coupled isolation to the signal between communicating circuit and tested display board.
Further, proving installation also comprises: display module, is connected between control module and tested display board, for showing the semaphore change of tested display board in real time and detecting data.
Further, proving installation also comprises power module, and power module is connected with control module, and power module comprises: transforming circuit; And mu balanced circuit, be connected with transforming circuit, for providing voltage of voltage regulation for proving installation.
To achieve these goals, according to a further aspect in the invention, provide a kind of test macro of display panel of air-conditioner, comprising: display panel of air-conditioner; And any one proving installation that foregoing of the present invention provides.
By the present invention, adopt control module; First detecting unit, is connected between control module and tested display board, for generating detection signal according to the control signal from control module, and detects tested display board according to detection signal; And second detecting unit, be connected between control module and tested display board, for monitoring the semaphore change of tested display board to obtain detecting data, and detection data are sent to control module, wherein, first detection module comprises remote detection module, remote detection module detects tested display board for simulating tele-control system, solve in prior art the problem needing to test the remote monitoring function of display panel of air-conditioner separately, and then reach the effect integrating on-the-spot test and remote monitoring function and test.
Accompanying drawing explanation
The accompanying drawing forming a application's part is used to provide a further understanding of the present invention, and schematic description and description of the present invention, for explaining the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 is the schematic diagram of the test macro according to the embodiment of the present invention;
Fig. 2 is the schematic appearance of the proving installation according to the embodiment of the present invention;
Fig. 3 is the schematic diagram of the proving installation according to the embodiment of the present invention;
Fig. 4 is the schematic diagram of proving installation according to the preferred embodiment of the invention;
Fig. 5 is the circuit diagram of power module according to the preferred embodiment of the invention;
Fig. 6 a is compressor low-voltage variation signal deteching circuit figure according to the preferred embodiment of the invention;
Fig. 6 b is compressor high voltage protective signal deteching circuit figure according to the preferred embodiment of the invention;
Fig. 6 c is overcurrent protection signal deteching circuit figure according to the preferred embodiment of the invention;
Fig. 7 a is the circuit diagram of room temperature simulation amount output circuit according to the preferred embodiment of the invention;
Fig. 7 b is the circuit diagram of pipe temperature analogue quantity output circuit according to the preferred embodiment of the invention;
Fig. 8 is the circuit diagram of remote communication module according to the preferred embodiment of the invention; And
Fig. 9 is the process flow diagram of the method for testing according to the embodiment of the present invention.
Embodiment
It should be noted that, when not conflicting, the embodiment in the application and the feature in embodiment can combine mutually.Below with reference to the accompanying drawings and describe the present invention in detail in conjunction with the embodiments.
Fig. 1 is the schematic diagram of the test macro according to the embodiment of the present invention, and as shown in Figure 1, this test macro comprises: display panel of air-conditioner 10 and proving installation 20.
Fig. 2 is the schematic appearance of the proving installation according to the embodiment of the present invention, as shown in Figure 2, this proving installation comprises LCDs to show detecting information, interface 1, interface 2, interface 3 and interface 4 are for being connected power supply or display panel of air-conditioner, on & off switch is for controlling unlatching or the closedown of proving installation functional circuit, Menu key carries out menu display for controlling LCDs, on rebuild and under rebuild be respectively used to the displaying contents of LCDs upwards select or select downwards operation, cancel key is for cancelling current operation, OK button is for confirming current operation, button is for controlling unlatching or the cut out of proving installation power supply.
Fig. 3 is the schematic diagram of the proving installation according to the embodiment of the present invention, and as shown in Figure 3, this proving installation comprises control module 201; First detecting unit 203, is connected between control module 201 and tested display board 205, for generating detection signal according to the control signal from control module 201, and detects tested display board 205 according to detection signal; And second detecting unit 207, be connected between control module 201 and tested display board 205, for monitoring the semaphore change of tested display board to obtain detecting data, and detection data are sent to control module 201, wherein, first detecting unit comprises remote detection module 2031, and remote detection module 2031 detects tested display board 205 for simulating tele-control system.
As can be seen from the above description, when needs carry out Site Detection to tested display board 205, control module 201 can directly be detected tested display board 205 by the first detecting unit 203, the second detecting unit 207 be simultaneously connected between control module 201 and tested display board 205 monitors the semaphore change of tested display board 205 to obtain detecting data, and detection data are sent to control module, achieve the Site Detection to tested display board 205; When needs carry out remote monitoring function detection to tested display board 205, control module 201 is detected tested display board 205 by the first detecting unit 203 medium-long range detection module 2031, the second detecting unit 207 be simultaneously connected between control module 201 and tested display board 205 monitors the semaphore change of tested display board 205 to obtain detecting data, and detection data are sent to control module, achieve and the remote monitoring function of tested display board 205 is detected.
Fig. 4 is the schematic diagram of proving installation according to the preferred embodiment of the invention, and as shown in Figure 4, the proving installation of the preferred embodiment of the present invention comprises:
Power module, power supply is to whole fixture system, the circuit diagram of power module as shown in Figure 5, first, 220V alternating voltage through transformer transformation be low-voltage ac voltage, the voltage stabilizing of voltage stabilizing chip is used after bridge rectifier circuit, stable power supply mode is provided to frock, wherein, the input end of voltage stabilizing chip U401 is connected with bridge rectifier circuit by filter capacitor C401 with C402, output terminal connects decoupling capacitor C403 and C404, the input end of voltage stabilizing chip U402 is connected with bridge rectifier circuit by filter capacitor C405 with C406, output terminal connects decoupling capacitor C407 and C408.
Digital signal output modules: power module is powered to after fixture system, and fixture system brings into operation.First software control single-chip microcomputer (PIC18F6720) exports low and high level control signal, through light-coupled isolation chip U101, U102 and U103, digital signal is exported to display board, and display board can produce various action after receiving; Now signal deteching circuit module real time detection signal change, change information is supplied to Intelligent Single-Chip Based and judges process, single-chip microcomputer judges the real-time display situation of change of rear drive liquid crystal display circuit module and result; Now be in functional test step (test automatically, refrigeration, dehumidifier, blow, the function such as to heat), as correct in test result, system prompt enters next step and tests.Wherein, Fig. 6 a is compressor low-voltage variation signal deteching circuit figure according to the preferred embodiment of the invention, as shown in Figure 6 a, the compressor low-voltage variation signal deteching circuit of the preferred embodiment of the present invention comprises: light-coupled isolation chip U101, first end meets the signal output LPP of single-chip microcomputer by resistance R104, the second end ground connection, the LPP input port of the 3rd termination display board, and by resistance R103 ground connection, the 4th end connects 5V voltage by resistance R102; Fig. 6 b is compressor high voltage protective signal deteching circuit figure according to the preferred embodiment of the invention, as shown in Figure 6 b, the compressor high voltage protective signal deteching circuit of the preferred embodiment of the present invention comprises: light-coupled isolation chip U102, first end meets the signal output OVC of single-chip microcomputer by resistance R107, second end ground connection, the OVC input port of the 3rd termination display board, and by resistance R106 ground connection, the 4th end connects 5V voltage by resistance R105; Fig. 6 c is overcurrent protection signal deteching circuit figure according to the preferred embodiment of the invention; as fig. 6 c; the overcurrent protection signal deteching circuit of the preferred embodiment of the present invention comprises: light-coupled isolation chip U103; first end meets the signal output OVI of single-chip microcomputer by resistance R118; second end ground connection; the OVI input port of the 3rd termination display board, and by resistance R117 ground connection, the 4th end connects 5V voltage by resistance R116.
Simulating signal (changes in resistance value analog room temperature, Guan Wen) output circuit module: software program control single chip computer (PIC18F6720) outputs signal pilot relay, be supplied to the different simulating signal of display board (room temperature of simulative display, Guan Wen), after display board receives different simulating signal, various different signalizing activity can be produced; Now signal deteching circuit module real time detection signal change, change information is supplied to Intelligent Single-Chip Based and judges process, single-chip microcomputer judges the real-time display situation of change of rear drive liquid crystal display circuit module and result.Now be in functional test step (testing the functions such as abnormal environment protection), as correct in test result, system prompt enters next step test.Wherein, analog signal output circuit comprises: room temperature simulation amount output circuit, Fig. 7 a is the circuit diagram of room temperature simulation amount output circuit according to the preferred embodiment of the invention, as shown in Figure 7a, its input end connects single-chip microcomputer IO and controls mouth, output terminal connects display board, and room temperature simulation amount output circuit is made up of relay R LY201, adjustable resistance R202, adjustable resistance R203, electric capacity C201, diode D201, triode Q201 and resistance R201; Pipe temperature analogue quantity output circuit, Fig. 7 b is the circuit diagram of room temperature simulation amount output circuit according to the preferred embodiment of the invention, as shown in Figure 7b, its input end connects single-chip microcomputer IO and controls mouth, output terminal connects display board, and pipe temperature analogue quantity output circuit is made up of relay R LY202, adjustable resistance R205, adjustable resistance R206, electric capacity C202, diode D202, triode Q202 and resistance R204.
Long-distance communication circuit module: as shown in Figure 8, single-chip microcomputer (PIC18F6720) connection standard RS485 communicating circuit input end is (by resistance R317 for long-distance communication circuit module circuit diagram, R318, R319, R320, R321, R322, electric capacity C301 and IC_MAX485 chip are formed), communicating circuit is resolved the detection signal of proving installation according to communications protocol and is exported remote detection signal to detect tested display board, and communicating circuit exports termination opto-coupler chip buffer circuit (by light-coupled isolation chip U302, U303, U304, U305 and peripheral circuit are formed, wherein, and light-coupled isolation chip U302, U303, U304, the first end of U305 is respectively by resistance R301, R305, R309, R313 connects 5V voltage, light-coupled isolation chip U302, second end of U305 connects the RX end of 485 communicating circuits respectively, DI holds, light-coupled isolation chip U303, second end of U304 is respectively by triode Q301 and resistance R304, triode Q302 is connected the RE end of 485 communicating circuits with resistance R308, DE holds, light-coupled isolation chip U302, U303, U304, 3rd end of U305 is respectively by resistance R302, R306, R310, R315 connects 5V voltage, light-coupled isolation chip U302, U303, U304, 4th end of U305 is respectively by resistance R303, R307, R311, R316 ground connection, the 4th end of light-coupled isolation chip U304 connects the DE_1 end of 485 communicating circuits by resistance R311) after, communications protocol is sent to display board, now signal deteching circuit module real time detection signal change, change information is supplied to Intelligent Single-Chip Based and judges process, single-chip microcomputer judges the real-time display situation of change of rear drive liquid crystal display circuit module and result.Now be in remote communicating function testing procedure.
Signal deteching circuit module: while digital signal module, the output of simulating signal module by signal and telecommunication agreement send, software program operation single-chip microcomputer (PIC18F6720) I/O port is set to input pattern, after access current-limiting resistance, the change of the various semaphores of real-time detection display plate automatically.
Liquid crystal display circuit module: in whole test process, software program drives 320*240 lattice lcd circuit to show detecting information and result in real time by single-chip microcomputer (PIC18F6720).
As can be seen from the above description, the global design scheme of the proving installation of the preferred embodiment of the present invention is divided into hardware scheme, software design scheme two parts.Be switched to corresponding resistance value (analog quantity) by master chip automatic control relay in the concrete test of hardware scheme to export to display board, detect each signal message obtaining display board in real time.Export data protocol to display board, each information change of detection display plate by RS485 communicating circuit simulation remote monitoring simultaneously.Key hardware modular design is described below: power module: adopt power frequency transforming circuit+interchange to turn direct current regulation circuit mode and power; Digital signal output circuit module: Master control chip IO exports low and high level and draws through opto-coupler chip isolation rear port, is supplied to display board access; Simulating signal (analog room temperature, Guan Wen) output circuit module: Master control chip IO exports low and high level pilot relay, relay connects different resistance value rear ports and draws, and is supplied to display board access.Signal deteching circuit module: Master control chip I/O port is set to input pattern, and access the extraction of current-limiting resistance rear port, be supplied to display board access.Long-distance communication circuit module: company standard RS485 communicating circuit connects opto-coupler chip isolation rear port and draws, and is supplied to display board access.Liquid crystal display circuit module: Master control chip drives 320*240 lattice lcd circuit to show.FLASH module: the data read in EEPROM need to be with power-down protection, so need chip belt FLASH, system have employed the PIC18F6720 single-chip microcomputer of MICROCHIP company.Read by serial 8 modes.Software design scheme is primarily of four major part compositions: testing procedure is reminded automatically: start test, while digital signal output circuit module, analog signal output circuit module run, software now reminds next step testing procedure of tester automatically, shown in real time by liquid crystal, prevent tester from omitting testing procedure.Automatic functional testing: after automatically reminding tester, software starts according under residing different testing procedure, automatically provide required semaphore to display board by digital signal output circuit module, analog signal output circuit module, and shown in real time by liquid crystal by the change of each semaphore of signal deteching circuit module monitors display board simultaneously.Communications protocol sends: after completing functional test, long-distance communication circuit module brings into operation, and software is automatically resolved communications protocol and sent to display board, monitors the change that display board receives each semaphore after communication information simultaneously.EEPROM read-write capability: last, software preserves detecting information and result automatically in EEPROM.
By the cooperation of various functions module, final frock integrates functional test and telecommunication is tested; Functional test part is more intelligent, robotization; Telecommunication part of detecting completes automatically; Save test operating procedure, and improve the testing efficiency of product.Reach self adjusting resistance value, analog quantity (simulation external environment condition is provided, operation conditions) to display board, respective change can be produced after the change of display board Received signal strength, frock liquid crystal display display testing procedure is reminded, automatic prompting tester carries out next step operation, when tester tests display board keypress function, change (the abnormal protection of each control signal of frock automatic monitoring, automatically, refrigeration, dehumidifier, air-supply, heat) and shown in real time by liquid crystal, frock simulation air-conditioning tele-control system and display board carry out telecommunication control, realize remote communicating function test, EEPROM can be read and write, the effect that key message is saved.
Fig. 9 is the process flow diagram of the method for testing according to the embodiment of the present invention, and as shown in Figure 9, the method for testing of the embodiment of the present invention comprises: step S902: proving installation generates detection signal; Step S904: proving installation detects tested display board according to detection signal; And step S906: proving installation monitors the semaphore change of tested display board to obtain detecting data, and wherein, step S904 comprises: proving installation simulation tele-control system detects tested display board.
By the above-mentioned method of testing of the embodiment of the present invention, when needs carry out Site Detection to tested display board, proving installation generates detection signal and directly to detect tested display board according to detection signal, the semaphore change of simultaneously monitoring tested display board, to obtain detecting data, achieves the Site Detection to tested display board; When needs carry out remote monitoring function detection to tested display board, proving installation generates detection signal and simulates tele-control system and detects tested display board, the semaphore change of simultaneously monitoring tested display board, to obtain detecting data, achieves and detects the remote monitoring function of tested display board.
Obviously, those skilled in the art should be understood that, above-mentioned of the present invention each module or each step can realize with general calculation element, they can concentrate on single calculation element, or be distributed on network that multiple calculation element forms, alternatively, they can realize with the executable program code of calculation element, thus, they can be stored and be performed by calculation element in the storage device, or they are made into each integrated circuit modules respectively, or the multiple module in them or step are made into single integrated circuit module to realize.Like this, the present invention is not restricted to any specific hardware and software combination.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (7)
1. a proving installation for display panel of air-conditioner, is characterized in that, comprising:
Control module;
First detecting unit, be connected between described control module and tested display board, for generating detection signal according to the control signal from described control module, and according to described detection signal, described tested display board is detected, described first detecting unit comprises digital signal output modules, digital quantity detection signal is generated for the control signal according to described control module, and described digital quantity detection signal is sent to described tested display board, described digital signal output modules comprises the first optical coupling isolation circuit, for carrying out light-coupled isolation to described digital quantity detection signal, wherein, described first optical coupling isolation circuit comprises light-coupled isolation chip, the first end of described light-coupled isolation chip connects described control module by the first resistance, second end ground connection of described light-coupled isolation chip, display board tested described in the three-terminal link of described light-coupled isolation chip, and by the second resistance eutral grounding, 4th end of described light-coupled isolation chip connects 5V voltage by the 3rd resistance, and
Second detecting unit, is connected between described control module and tested display board, for monitoring the semaphore change of described tested display board to obtain detecting data, and described detection data is sent to described control module,
Wherein, described first detecting unit comprises remote detection module, and described remote detection module detects described tested display board for simulating tele-control system.
2. proving installation according to claim 1, is characterized in that, described first detecting unit comprises:
Analog signal output module, generates analog quantity signal for the control signal according to described control module, and described analog quantity signal is sent to described tested display board.
3. proving installation according to claim 2, is characterized in that, described analog signal output module comprises:
First analogue quantity output circuit, for exporting the first operating condition data of described tested display board, wherein, described first operating condition data are the indoor temperature parameter of described tested display board when being in guard mode; And
Second analogue quantity output circuit, for exporting the second operating condition data of described tested display board, wherein, described second operating condition data are the pipe temperature parameter of described tested display board when being in guard mode.
4. proving installation according to claim 1, is characterized in that, described remote detection module comprises:
Communicating circuit, is connected with described control module, exports remote detection signal for the control signal of resolving described control module according to communications protocol; And
Second optical coupling isolation circuit, is connected between described communicating circuit and described tested display board, for carrying out light-coupled isolation to the signal between described communicating circuit and described tested display board.
5. proving installation according to claim 1, is characterized in that, described proving installation also comprises:
Display module, is connected between described control module and described tested display board, for showing the semaphore change of described tested display board and described detection data in real time.
6. proving installation according to claim 1, is characterized in that, described proving installation also comprises power module, and described power module is connected with described control module, and described power module comprises:
Transforming circuit; And
Mu balanced circuit, is connected with described transforming circuit, for providing voltage of voltage regulation for described proving installation.
7. a test macro for display panel of air-conditioner, is characterized in that, comprising:
Display panel of air-conditioner; And
Proving installation described in any one of claim 1 to 6.
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| CN201110357966.7A CN103105544B (en) | 2011-11-11 | 2011-11-11 | Method, device and system for testing display panel of air conditioner |
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| CN201110357966.7A CN103105544B (en) | 2011-11-11 | 2011-11-11 | Method, device and system for testing display panel of air conditioner |
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Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104199364A (en) * | 2014-09-15 | 2014-12-10 | 格力电器（武汉）有限公司 | Display panel test system |
| CN110275102A (en) * | 2019-06-12 | 2019-09-24 | 格力电器（武汉）有限公司 | Air conditioner display panel testing arrangement and air conditioner display panel |
| CN111077884A (en) * | 2019-12-28 | 2020-04-28 | 佛山市扬凡电子科技有限公司 | Inter-board communication testing method |
| CN111579903A (en) * | 2020-05-18 | 2020-08-25 | 格力电器（合肥）有限公司 | Display module testing tool and testing method |
| CN111707842B (en) * | 2020-06-28 | 2022-03-29 | 中车大连机车车辆有限公司 | Frequency signal generation method based on RS485 serial port and rotating speed system test method |
| CN111895614A (en) * | 2020-07-23 | 2020-11-06 | Tcl空调器(中山)有限公司 | Monitoring circuit and system for outdoor unit of air conditioner |
| CN113219322A (en) * | 2021-04-23 | 2021-08-06 | 格力电器（武汉）有限公司 | Display panel detection method based on PLC |
| CN113820588B (en) * | 2021-09-02 | 2024-05-10 | 格力电器（武汉）有限公司 | Integrated detection method for display and communication interface of air conditioner control main board |
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| CN201364496Y (en) * | 2009-01-15 | 2009-12-16 | 珠海格力电器股份有限公司 | Variable frequency air conditioner mainboard test system |
| CN201637814U (en) * | 2009-12-22 | 2010-11-17 | 广州擎天实业有限公司 | One-key type circuit board detecting device |
| CN202330582U (en) * | 2011-11-11 | 2012-07-11 | 珠海格力电器股份有限公司 | Testing device and system for display panel of air conditioner |
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| CN103105544A (en) | 2013-05-15 |
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