CN2912171Y - TV set having integrated fault auto checking and alarming circuit - Google Patents
TV set having integrated fault auto checking and alarming circuit Download PDFInfo
- Publication number
- CN2912171Y CN2912171Y CN 200620085373 CN200620085373U CN2912171Y CN 2912171 Y CN2912171 Y CN 2912171Y CN 200620085373 CN200620085373 CN 200620085373 CN 200620085373 U CN200620085373 U CN 200620085373U CN 2912171 Y CN2912171 Y CN 2912171Y
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Abstract
The utility model discloses a television with an automatic diagnosis alarming circuit for complete machine fault. The utility model comprises a CPU and a module circuit communicated with the CPU through an I<2>C bus line; when a communication fault in the module circuit communicated with the bus line is detected by the CPU, an impulse signal with a certain frequency is outputted through the I/O port, and the I/O port is connected with the control terminal of a switching circuit, and connected with the indicating lamp circuit of the switching circuit. The indicating lamp circuit indicates which part fails with certain color and flashing frequency according to the impulse signal outputted by the CPU to create early warning and error reporting, thereby guiding the maintenance personnel to determine the faulty part and find the fault cause and greatly improving the maintenance efficiency of the television product.
Description
Technical field
The utility model relates to a kind of improvement of TV set circuit, specifically, relates to a kind of being applied in the TV set circuit, the complete machine fault is carried out the control circuit of automatic diagnosis and Realtime Alerts demonstration.
Background technology
At present, increase day by day along with the television set function, circuit system becomes and becomes increasingly complex, the probability that causes tv product to break down in running also increases gradually, if these faults can not be judged and get rid of in time, not only can cause the complete machine performance decrease, when serious even also can cause the damage of equipment, thereby influence consumer's normally watching TV programme.Meanwhile, when unusual condition appearred in equipment, owing to lack necessary failure diagnosis and warning circuit in the equipment, therefore, it was any fault that the technical staff often is difficult to judge in time, had brought a lot of difficulties for the inspection maintenance work of equipment.
Summary of the invention
The utility model is in order to solve in the prior art in the television devices owing to lack necessary failure diagnosis and warning circuit, thereby make mechanical disorder be difficult to judge, the problem of making troubles for technical staff's examination and maintenance work, a kind of novel TV machine complete machine automatic fault diagnosis warning circuit is provided, by in TV set circuit, setting up simple warning indicating circuit, when communication failure appears in each functional module in television system, can send alarm signal in time, and trouble location indicated, thereby greatly made things convenient for maintenance personal's inspection maintenance work.
For solving the problems of the technologies described above, the utility model is achieved by the following technical solutions:
A kind of television set with complete machine automatic fault diagnosis warning circuit comprises CPU and passes through I
2C bus and CPU carry out the modular circuit of communication; Described CPU has the pulse signal of certain frequency by its I/O mouth output when detecting the modular circuit of carrying out bus communication with it and communication failure occurs, described I/O mouth connects the control end of switching circuit, and connects indicator light circuit by described switching circuit.
As further qualification to technique scheme, in described switching circuit, include two NPN type triodes, its base stage connects the I/O mouth of CPU separately, the equal ground connection of emitter of described two NPN type triodes, collector electrode all links to each other with DC power supply on the one hand, links to each other with wherein one road diode of a double-colored light-emitting diode respectively on the other hand.Described dichromatic LED is red, blue two-color diode, the equal ground connection of its negative pole, and the positive pole of red light emitting diodes all connects the collector electrode of one of them triode, and the positive pole of blue LED all connects the collector electrode of another one triode.
As the further qualification again to technique scheme, described and CPU passes through I
2The modular circuit that the C bus is carried out communication comprises picture processing chip, display module circuit, acoustic processing chip and tuner.
Compared with prior art, advantage of the present utility model and good effect are: CPU of the present utility model passes through I
2The C bus detects the various piece in the television system termly, reads the state of current various piece, if note abnormalities or I
2The C bus can not normal communication, CPU will send command signal to switching circuit, the control indicator light with specific color and flicker frequency indicate concrete which partly break down, realize early warning and report an error, thereby the guide maintenance personnel determine trouble location rapidly, find out failure cause, greatly improved the maintenance efficiency of tv product.
Description of drawings
Fig. 1 is I in the utility model
2The corresponding schematic diagram of C bus communication and led status;
Fig. 2 is the correspondence graph of indicator light flicker sequential and trouble location;
Fig. 3 is the catenation principle figure of CPU and switching circuit;
Fig. 4 is the catenation principle figure of indicator light circuit.
Embodiment
Below in conjunction with the drawings and specific embodiments the utility model is done explanation in further detail.
The panel TV system mainly is made up of mainboard, tuner plate, image processing section, acoustic processing part, display module etc.Wherein, mainboard is the signal plate at system CPU place, and the switch of control signal switches, communication and control, signal decoding and the image processing etc. of system's various piece; Tuner received television signal and demodulation; Acoustic processing part to sound channel switch, voice codec, acoustic processing etc.; Display module is responsible for showing handling the back picture signal.CPU passes through I
2C bus and described each module are carried out communication.
The mentality of designing of failure diagnosis warning circuit of the present utility model is: system CPU passes through I
2The C bus detects each modular circuit in the television system termly, reads the state of current various piece, if note abnormalities or I
2The C bus can not normal communication, such as: CPU does not receive the answer signal that modular circuit is sent in official hour, then CPU will send command signal to switching circuit, the control indicator light with specific color and flicker frequency indicate concrete which partly break down, realize early warning and report an error, thereby the guide maintenance personnel determine trouble location rapidly, find out failure cause.Wherein, the flicker frequency of indicator light and the corresponding relation of trouble location be referring to Fig. 1, shown in Figure 2, and when communication failure appearred in picture processing chip, indicator light was exported in the mode of twice of phase flicker weekly; When communication failure appearred in display module, indicator light was exported in the mode of the flicker of phase weekly three times; When communication failure appearred in the acoustic processing chip, indicator light was exported in the mode of the flicker of phase weekly four times; And when communication failure appearred in tuner, indicator light was then exported in the mode of the flicker of phase weekly five times.The maintenance personal passes through the viewing lamp number of times difference of phase flicker weekly, can judge easily where partial circuit breaks down in the television set, thereby implement maintenance work targetedly.
The circuit theory diagrams of specific implementation warning indication are referring to Fig. 3, Fig. 4.Among Fig. 3, CPU is by two I/O mouth output pulse signal, and the base stage by resistance R 372 connection NPN type triode QM5 is exported the pulse signal LED R that controls blinking red lamp; Another is by the base stage of resistance R 377 connection NPN type triode QM6, the pulse signal LED B of the blue lamp flicker of output control.The grounded emitter of described triode QM5, collector electrode are on the one hand by resistance R M26 connection+5V DC power supply, the red light emitting diodes among the dichromatic LED VDR01 in the 3 pin connection layouts 4 of 6 needle interface J20 and XPR01 on the other hand.In like manner, the grounded emitter of described triode QM6, collector electrode is on the one hand by resistance R M27 connection+5V DC power supply, the blue LED among the dichromatic LED VDR01 in the 2 pin connection layouts 4 of 6 needle interface J20 and XPR01 on the other hand, according to the difference of CPU output pulse frequency, control dichromatic LED VDR01 is with the luminous demonstration of assigned frequency.
Among Fig. 4, remote signal receives a NR01 and receives the control signal that remote controller sends, and remote signal is outputed among the CPU through 1 pin of interface XPR01 and J20 by its SIG end, realizes that CPU receives remote control command ground.
The utility model is by adopting above-mentioned simple circuit configuration, realized a kind of can automatic testing circuit of the fault of widespread usage on television system and programming scheme, help when maintenance, determining rapidly the position of fault, can improve maintenance efficiency greatly.Certainly; above-mentioned explanation is not to be to restriction of the present utility model; the utility model also is not limited in above-mentioned giving an example, and variation, remodeling, interpolation or replacement that those skilled in the art are made in essential scope of the present utility model also should belong to protection range of the present utility model.
Claims (4)
1. the television set with complete machine automatic fault diagnosis warning circuit comprises CPU and passes through I
2C bus and CPU carry out the modular circuit of communication, it is characterized in that: described CPU is when detecting the modular circuit of carrying out bus communication with it and communication failure occurs, the pulse signal that has certain frequency by its I/O mouth output, described I/O mouth connects the control end of switching circuit, and connects indicator light circuit by described switching circuit.
2. the television set with complete machine automatic fault diagnosis warning circuit according to claim 1, it is characterized in that: described switching circuit is a NPN type triode, the I/O mouth of CPU connects the base stage of triode, the grounded emitter of described triode, collector electrode connects DC power supply on the one hand, the positive pole that connects light-emitting diode in the described indicator light circuit on the other hand, the minus earth of described light-emitting diode.
3. the television set with complete machine automatic fault diagnosis warning circuit according to claim 2, it is characterized in that: in described switching circuit, include two NPN type triodes, its base stage connects the I/O mouth of CPU separately, the equal ground connection of emitter of described two NPN type triodes, collector electrode all links to each other with DC power supply on the one hand, links to each other with wherein one road diode of a double-colored light-emitting diode respectively on the other hand.
4. the television set with complete machine automatic fault diagnosis warning circuit according to claim 3 is characterized in that: described and CPU passes through I
2The modular circuit that the C bus is carried out communication comprises picture processing chip, display module circuit, acoustic processing chip and tuner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620085373 CN2912171Y (en) | 2006-06-06 | 2006-06-06 | TV set having integrated fault auto checking and alarming circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620085373 CN2912171Y (en) | 2006-06-06 | 2006-06-06 | TV set having integrated fault auto checking and alarming circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2912171Y true CN2912171Y (en) | 2007-06-13 |
Family
ID=38134034
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620085373 Expired - Fee Related CN2912171Y (en) | 2006-06-06 | 2006-06-06 | TV set having integrated fault auto checking and alarming circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2912171Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101888570A (en) * | 2010-06-25 | 2010-11-17 | 深圳创维－Rgb电子有限公司 | Post-sale breakdown maintenance system and method thereof of 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 |
| CN101754048B (en) * | 2008-12-10 | 2012-01-25 | 康佳集团股份有限公司 | Method and device for processing fault of television |
| CN106961565A (en) * | 2017-03-17 | 2017-07-18 | 安徽波维电子科技有限公司 | A kind of tuner of the intelligent information prompting based on DSP single-chip microcomputers |
-
2006
- 2006-06-06 CN CN 200620085373 patent/CN2912171Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101754048B (en) * | 2008-12-10 | 2012-01-25 | 康佳集团股份有限公司 | Method and device for processing fault of television |
| CN101888570A (en) * | 2010-06-25 | 2010-11-17 | 深圳创维－Rgb电子有限公司 | Post-sale breakdown maintenance system and method thereof of 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 |
| CN101969578B (en) * | 2010-09-17 | 2012-10-10 | 青岛海信电器股份有限公司 | Fault detection system and method as well as television |
| CN106961565A (en) * | 2017-03-17 | 2017-07-18 | 安徽波维电子科技有限公司 | A kind of tuner of the intelligent information prompting based on DSP single-chip microcomputers |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20070613 Termination date: 20110606 |