CN101437173A - Instrument for detecting flat-plate television failure and detection method thereof - Google Patents
Instrument for detecting flat-plate television failure and detection method thereof Download PDFInfo
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Abstract
The invention relates to television technology, solves the problems that the fault detection and the positioning of the prior panel television are complicated, and provides a panel television fault detector and a detection method thereof. The technical proposal can be summarized as follows: the panel television fault detector comprises a power supply module, a digital signal input interface, an analog signal input interface, a multi-way analog switch, an analysis processing control module, a key control module, a liquid crystal display module, a video signal generation module, an audio signal generation module, a remote control signal generation module, a signal output interface and a memory module, wherein each functional module is used to generate each signal of an analog panel television input, and the fault detection for the panel television is performed through detecting the voltage of each detection point of the panel television. The panel television fault detector has the advantages that fault components of the panel television can be determined conveniently and quickly, the fault components are convenient to replace, and the maintenance time of the whole panel television is greatly shortened, thus the panel television fault detector is suitable for the maintenance of the panel television.
Description
Technical field
The present invention relates to TV tech, particularly the technology of television fault detection.
Background technology
At present, panel TV sale at home and abroad all is the situation of breaking out growth, and according to the appropriate authority data statistics, the early stage repair rate of panel TV (in 15 days) is up to 8%, if add the data of reprocessing of user's phase, then more strengthen surprisingly, high maintenance cost and long maintenance cycle have not only increased the operation cost of enterprise, simultaneously also bring great inconvenience to the user, if the user can obtain after complete machine breaks down rapidly, accurately, cheap maintenance service, the user is improved to the satisfaction of company's brand, thereby the brand of the company of giving is brought positive impact, the core competitiveness of company's product is provided, and the fault detect of panel TV generally is according to phenomenon of the failure by experienced maintenance technician, combined circuit plate voltage tester, comprehensive decision circuitry fault, and a veteran maintenance personal's cultivation needs long time and higher human resources expense.Along with the development of panel TV, its product has been realized modularization gradually, and product mainly contains fixing product component such as power panel, mainboard, drive plate, inverter and keypad and is formed by connecting by plug with wive.
Summary of the invention
Technical problem to be solved by this invention in order to overcome the complicated shortcoming of present panel TV fault detect and location, provides a kind of panel TV fault locator and detection method thereof exactly.
The present invention solves its technical problem, the technical scheme that adopts is, the panel TV fault locator, it is characterized in that, comprise power module, the digital signal input interface, analog input interface, multiway analog switch, the analyzing and processing control module, the button control module, LCD MODULE, vision signal generation module, audio signal generation module, remote signal generation module, signal output interface and memory module, described digital signal input interface is connected with the analyzing and processing control module, analog input interface is connected with the analyzing and processing control module by multiway analog switch, the button control module is connected with the analyzing and processing control module, LCD MODULE is connected with the analyzing and processing control module, vision signal generation module is connected with the analyzing and processing control module, audio signal generation module is connected with the analyzing and processing control module, remote signal generation module is connected with the analyzing and processing control module, vision signal generation module is connected with signal output interface, audio signal generation module is connected with signal output interface, remote signal generation module is connected with signal output interface, memory module is connected with the analyzing and processing control module, and power module is to each module for power supply;
Concrete, also comprising serial communication modular, described serial communication modular is connected with the analyzing and processing control module;
Further, described vision signal generation module is used different microprocessors respectively with the analyzing and processing control module; Described power module comprises power autonomous module and power input interface; Described power input interface, digital signal input interface, analog input interface, signal output interface adopt standard interface;
The detection method of panel TV fault locator is characterized in that, may further comprise the steps:
A. panel TV fault locator standard interface is connected with the panel TV interface;
B. connect flat-plate television power supply,,, then start power autonomous module for power supply if flat-plate television power supply has fault if the flat-plate television power supply fault-free then utilizes power input interface to use the flat-plate television power supply power supply;
C. detect by button control module control fault and start;
D. the analyzing and processing control module is controlled each functional module work respectively, the analog signal that the digital signal of receiving digital signals input interface input simultaneously and analog input interface are imported by multiway analog switch, and carry out mould/number conversion;
E. judge that to order whether the relevant voltage of each assembly input is in normal range (NR) according to electric current and signal flow according to the detection algorithm program, if detected an assembly relevant voltage not in normal range (NR), then the panel TV fault locator shows this faulty components information by LCD MODULE and interrupts detecting;
F. fault detect finishes;
Concrete, further comprising the steps of:
G. will detect information stores in the memory module of panel TV fault locator or, relevant information will be stored in the computer by serial communication modular;
Further, step e is described judges that to order whether the relevant voltage of each assembly comprises assembly, mainboard assembly on power panel assembly, inverter assembly, remote control dash receiver assembly, keypad assembly, loudspeaker assembly, the screen at each assembly of normal range (NR) according to electric current and signal flow according to the detection algorithm program.
The invention has the beneficial effects as follows, can judge the faulty components of panel TV set quickly and easily, be convenient to faulty components and change, shorten panel TV complete machine maintenance time greatly by above-mentioned panel TV fault locator and detection method thereof.
Description of drawings
Fig. 1 is the system block diagram of embodiment.
Embodiment
Below in conjunction with drawings and Examples, describe technical scheme of the present invention in detail.
The invention provides a kind of panel TV fault locator and detection method thereof, the digital signal input interface is connected with the analyzing and processing control module, analog input interface is connected with the analyzing and processing control module by multiway analog switch, the button control module is connected with the analyzing and processing control module, LCD MODULE is connected with the analyzing and processing control module, vision signal generation module is connected with the analyzing and processing control module, audio signal generation module is connected with the analyzing and processing control module, remote signal generation module is connected with the analyzing and processing control module, vision signal generation module is connected with signal output interface, audio signal generation module is connected with signal output interface, remote signal generation module is connected with signal output interface, memory module is connected with the analyzing and processing control module, and use power module to form the panel TV fault locator for each functional module power supply, then the panel TV fault locator is connected with panel TV set to be measured, energized is also controlled the startup of panel TV fault locator, the analyzing and processing control module is controlled each functional module work respectively, be docile and obedient preface according to the detection algorithm program and judge that whether the relevant voltage of each assembly input is in normal range (NR), if detected an assembly relevant voltage not in normal range (NR), then the panel TV fault locator shows this faulty components information by LCD MODULE and interrupts detecting.
Embodiment
This routine panel TV fault locator also comprises serial communication modular, and serial communication modular is connected with the analyzing and processing control module, its system's frame such as Fig. 1.
The digital signal input interface is connected with the analyzing and processing control module, analog input interface is connected with the analyzing and processing control module by multiway analog switch, the button control module is connected with the analyzing and processing control module, LCD MODULE is connected with the analyzing and processing control module, vision signal generation module is connected with the analyzing and processing control module, audio signal generation module is connected with the analyzing and processing control module, remote signal generation module is connected with the analyzing and processing control module, vision signal generation module is connected with signal output interface, audio signal generation module is connected with signal output interface, remote signal generation module is connected with signal output interface, memory module is connected with the analyzing and processing control module, serial communication modular is connected with the analyzing and processing control module, and uses power module to form the panel TV fault locator for each functional module power supply.
Wherein, described vision signal generation module is used different microprocessors respectively with the analyzing and processing control module, works simultaneously to realize vision signal generation module and analyzing and processing control module, with the accuracy that guarantees to detect.The analyzing and processing control module adopts integrated circuit P89LPC936 to form, digital signal is directly imported by the digital signal input interface, the multi-channel gating switch input that analog signal is formed by two CD4051 gating switches, integrated circuit P89LPC936 carries out 4 road moulds/number conversion simultaneously, vision signal generation module uses integrated circuit P89LPC934 and integrated circuit AD724 to form, this module is exported R respectively by the I/O mouth of single-chip microcomputer, G, B and SYNC signal, deceiving of analog video signal, in vain, red, green, display mode such as indigo plant and colour bar, audio signal generation module adopts amplifier LM358 and peripheral circuit to form and produces the 1KHz sine wave as audio excitation signal, export with simulated audio signal, remote signal generation module adopts the integrated circuit P89LPC934 of vision signal generation module, remote signal generation chip, signal emitting diode and peripheral circuit are formed, the NEC code stream that mimicked remote control signals is used, be connected to panel TV remote control receiving unit by signal output interface, be used for remote controller simulation and control to panel TV, serial communication modular adopts the serial communication of integrated circuit MAX3222E and realization of standard 9 needle serial ports and computer, memory module adopts external EEPRAM memory, store in the memory various panel TV set models under working condition standard voltage value and can be used for the storage of fault message, foundation as fault judgement and location, power module comprises power autonomous module and power input interface, power autonomous module adopts the 9V powered battery, power input interface, the digital signal input interface, analog input interface, signal output interface adopts standard interface, standard interface is standard 25 pin parallel interface cables, the action of button control module control panel TV fault locator.
At first panel TV fault locator standard interface is connected with the panel TV interface, connect flat-plate television power supply then, if flat-plate television power supply fault-free, then utilize power input interface to use the power supply of panel TV 5V power supply, if panel TV 5V power supply has fault, then start power autonomous module and use the 9V powered battery, detect by button control module control fault again and start, the analyzing and processing control module is controlled each functional module work respectively, the digital signal of receiving digital signals input interface input simultaneously and analog input interface are by the analog signal of multiway analog switch input, and carry out mould/number conversion, be docile and obedient preface according to the detection algorithm program then and judge that whether the relevant voltage of each assembly input is in normal range (NR), if detected an assembly relevant voltage not in normal range (NR), then the panel TV fault locator shows this faulty components information by LCD MODULE and interrupts detecting, and then fault detect finishes.
Wherein, need to judge that each assembly that detects comprises the power panel assembly, inverter assembly, remote control dash receiver assembly, the keypad assembly, loudspeaker assembly, assembly on the screen, mainboard assembly, wherein, the judgement testing process of power panel assembly is: the processor supply power voltage that at first reads the 5V image processing section, within normal range (NR), then be not judged to be switch and power line fault or power panel fault as magnitude of voltage according to its magnitude of voltage, utilize the time-delay of remote signal generation module to continue to detect the remote signal value of remote control panel test point after 1 second, within normal range (NR), then be not judged to be remote control dash receiver fault or mainboard and remote control dash receiver relevant portion fault as magnitude of voltage according to its value, start after delaying time again 5 seconds, as detect boot failure and then be judged as main board failure, detect the supply power voltage of inverter and the supply power voltage that screen is gone up assembly respectively, itself and standard voltage value are compared, as the undesired power panel fault that then is judged to be.As all normal, then continue other partial faults and detect; The judgement testing process of inverter assembly is: at first utilize remote signal generation module remote-control closedown, start again after 5 seconds, can not drift about to guarantee test voltage with available machine time length, remote control enters the AV pattern and encourages white field signal, read control backlight illumination test point backlight illumination control magnitude of voltage and with the normal voltage value relatively, as in normal range (NR), then not being judged to be main board failure, as normally then reading the on off state of control inverter, judge whether to be main board failure with this, read the inverter power supply current value of inverter test point at last, and judge whether to be mainboard or fault of converter with this, as all normal, then continue other partial faults and detect; The judgement testing process of mainboard image section is: start shooting and encourage white field signal, read the data of panel TV EEPROM identical address at twice and compare, then be judged as main IC fault as inequality, as all normal, then continue other partial faults and detect; The judgement testing process of assembly is on the screen: at first control the panel TV shutdown, start after delaying time again 5 seconds, and panel TV switched under the AV pattern, the excitation of panel TV fault locator produces Hei Chang, Bai Chang, blue field signal respectively, detects the magnitude of voltage of selected test point, and itself and normal working voltage value are compared, if three kinds of situations have a kind of situation voltage undesired, then be judged as screen and go up component faults,, then continue other partial faults and detect as all normal; The judgement testing process of mainboard tuner part is: at first remote-controlled start-up and searching TV program, manually confirm image state, and as not searching TV programme, then show the tuner fault, as all normal, then continue other partial faults and detect; The judgement testing process of loudspeaker assembly is: at first start shooting and encourage audio signal, then continue to detect the audio-frequency test point as the loud speaker voiceless sound, then be judged to be main board failure as audio-frequency test point no signal, then be judged to be loudspeaker faults if any signal, as all normal, then continue other partial faults and detect; The judgement testing process of remote control dash receiver assembly is: at first the manual operation remote controller produces menu signal, there is not response as panel TV, then read the code stream on the remote control dash receiver, correctly then be judged to be main board failure as code stream, as the incorrect remote control dash receiver fault that then is judged to be, as all normal, then continue other partial faults and detect; The judgement testing process of button assembly is: remote-controlled start-up and test the button voltage of keypad test point when not having button and pressing at first, as the undesired keypad fault that then is judged to be, manual operation button then, and it is corresponding to it to observe panel TV, as responds undesiredly, then reads button voltage, as read voltage and normally then be judged to be main board failure, otherwise be judged to be the keypad fault,, then continue other partial faults and detect as all normal.
Because each circuit module physical circuit and software engineering in the technical solution of the present invention all belong to this area routine techniques, no longer describe in detail herein.Those of ordinary skill in the art according to foregoing description, can adopt various physical circuits and software approach to realize technical scheme of the present invention, and it all belongs to protection scope of the present invention.
Claims (8)
- [claim 1] panel TV fault locator, it is characterized in that, comprise power module, the digital signal input interface, analog input interface, multiway analog switch, the analyzing and processing control module, the button control module, LCD MODULE, vision signal generation module, audio signal generation module, remote signal generation module, signal output interface and memory module, described digital signal input interface is connected with the analyzing and processing control module, analog input interface is connected with the analyzing and processing control module by multiway analog switch, the button control module is connected with the analyzing and processing control module, LCD MODULE is connected with the analyzing and processing control module, vision signal generation module is connected with the analyzing and processing control module, audio signal generation module is connected with the analyzing and processing control module, remote signal generation module is connected with the analyzing and processing control module, vision signal generation module is connected with signal output interface, audio signal generation module is connected with signal output interface, remote signal generation module is connected with signal output interface, memory module is connected with the analyzing and processing control module, and power module is to each module for power supply.
- [claim 2] is characterized in that according to the described panel TV fault locator of claim 1, and also comprise serial communication modular, described serial communication modular is connected with the analyzing and processing control module.
- [claim 3] is characterized in that according to the described panel TV fault locator of claim 1, and described vision signal generation module is used different microprocessors respectively with the analyzing and processing control module.
- [claim 4] is characterized in that according to the described panel TV fault locator of claim 1 described power module comprises power autonomous module and power input interface.
- [claim 5] is characterized in that according to the described panel TV fault locator of claim 4, and described power input interface, digital signal input interface, analog input interface, signal output interface adopt standard interface.
- The detection method of [claim 6] panel TV fault locator is characterized in that, may further comprise the steps:A. panel TV fault locator standard interface is connected with the panel TV interface;B. connect flat-plate television power supply,,, then start power autonomous module for power supply if panel TV 5V power supply has fault if the flat-plate television power supply fault-free then utilizes power input interface to use the power supply of panel TV 5V power supply;C. detect by button control module control fault and start;D. the analyzing and processing control module is controlled each functional module work respectively, the analog signal that the digital signal of receiving digital signals input interface input simultaneously and analog input interface are imported by multiway analog switch, and carry out mould/number conversion;E. judge that to order whether the relevant voltage of each assembly input is in normal range (NR) according to electric current and signal flow according to the detection algorithm program, if detected an assembly relevant voltage not in normal range (NR), then the panel TV fault locator shows this faulty components information by LCD MODULE and interrupts detecting;F. fault detect finishes.
- [claim 7] is characterized in that according to the detection method of the described panel TV fault locator of claim 6, and be further comprising the steps of:G. will detect information stores in the memory module of panel TV fault locator or, relevant information will be stored in the computer by serial communication modular.
- [claim 8] is according to the detection method of the described panel TV fault locator of claim 6, it is characterized in that step e is described to judge that to order whether the relevant voltage of each assembly comprises assembly, mainboard assembly on power panel assembly, inverter assembly, remote control dash receiver assembly, keypad assembly, loudspeaker assembly, the screen at each assembly of normal range (NR) according to electric current and signal flow according to the detection algorithm program.
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| CN101778310A (en) * | 2010-03-02 | 2010-07-14 | 四川长虹电器股份有限公司 | Method for rapidly debugging fault of integrated digital television |
| CN101969578A (en) * | 2010-09-17 | 2011-02-09 | 青岛海信电器股份有限公司 | Fault detection system and method as well as television |
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| CN102186099A (en) * | 2011-04-29 | 2011-09-14 | 冠捷显示科技（厦门）有限公司 | Method for responding messages of broadcast television |
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- 2008-11-28 CN CNA2008103058456A patent/CN101437173A/en active Pending
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| CN110033853B (en) * | 2019-05-28 | 2023-11-03 | 中国人民解放军陆军工程大学 | Monitoring equipment |
| CN111459721A (en) * | 2020-04-08 | 2020-07-28 | 中国长城科技集团股份有限公司 | Fault processing method and device and computer |
| CN111459721B (en) * | 2020-04-08 | 2023-06-16 | 中国长城科技集团股份有限公司 | Fault processing method, device and computer |
| CN112542116A (en) * | 2020-12-14 | 2021-03-23 | 四川长虹电器股份有限公司 | Method for rapidly positioning display fault of TCONLESS liquid crystal display television |
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