CN2847752Y - Fan operation fault detecting circuit and TV set with said detecting circuit - Google Patents
Fan operation fault detecting circuit and TV set with said detecting circuit Download PDFInfo
- Publication number
- CN2847752Y CN2847752Y CN 200520126131 CN200520126131U CN2847752Y CN 2847752 Y CN2847752 Y CN 2847752Y CN 200520126131 CN200520126131 CN 200520126131 CN 200520126131 U CN200520126131 U CN 200520126131U CN 2847752 Y CN2847752 Y CN 2847752Y
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- fan
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- power supply
- testing circuit
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Abstract
The utility model discloses a fan operation fault detecting circuit and a TV with a detecting circuit, which comprises an MCU, a fan and a direct current power supply, wherein the output end of a state signal of the fan is connected with the control end of a controllable switch element. One end of the gating end of the controllable switch element is connected with the ground, one square surface at the other end is connected with the direct current power supply and the other square surface is connected with a GPIO opening of the MCU. In the utility model, through the detecting circuit which is additionally arranged in a circuit of the existing TV, the running state of the fan is detected in real time. Detection result is transferred to the MCU and is judged, when the MCU detects the fault of the fan, the fault programme of the fan runs. Fault information is displayed on a TV screen, and a whole machine is controlled after time is delayed for a period of time and then automatically shuts down to effectively avoid the problems that because the fan stops rotating, inner devices of the machine overheat to cause the damage of components, performance degradation, etc., and prolong the service life of the TV product.
Description
Technical field
The utility model relates to a kind of improvement of TV set circuit, specifically, relate to a kind of being applied in the TV set circuit, the fan-status of all operations in the complete machine is detected in real time, and the control circuit of when one or more fan breaks down, promptly and accurately reporting to the police.
Background technology
Existing television set can generate heat owing to its internal components in running, thus need the heat abstractor of configure dedicated that it is dispelled the heat, to guarantee the normal operation of television set.At present, needing to use one or more fan in some tv product dispels the heat, break down when stopping operating at fan, if can not in time find, and make machine continue operation, will cause the performance of machine and damage even burn out components and parts, influence the normal use of equipment, may cause the generation of serious accidents such as fire when serious in addition owing to the lasting rising of temperature, not only reduce the complete machine quality of product, and people's life security has been caused harm.
Summary of the invention
The utility model easily causes machine element to be burnt out in order to solve tv product in the prior art owing to lack necessary fan running status testing circuit; the problem that the complete machine performance is lowered; a kind of novel TV machine fan operation troubles real-time detection circuit is provided; by adopting simple circuit configuration that the running status of fan is detected in real time; and when breaking down, fan in time reports to the police; the control complete machine shuts down automatically; thereby realized overtemperature protection, improved reliability of products tv product.
For solving the problems of the technologies described above, the utility model is achieved by the following technical solutions:
A kind of fan operation troubles testing circuit and have the television set of testing circuit, comprise MCU, fan and DC power supply, described fan state signal output part connects the control end of a controllable switch element, the gating end one end ground connection of described controllable switch element, the other end connects described DC power supply on the one hand, links to each other with the GPIO mouth of MCU on the other hand.
As further qualification to technique scheme, described controllable switch element adopts a NPN type triode to realize, the base stage of described NPN type triode connects described fan state signal output part through a switching diode, grounded emitter, collector electrode connects described DC power supply on the one hand, the GPIO mouth that connects described MCU on the other hand through a divider resistance, and through another divider resistance ground connection.
As further limiting again to technique scheme, in television set, described fan operation troubles testing circuit includes three groups, its signal input part respectively with three corresponding connections of fan state signal output part, and connect described DC power supply through pull-up resistor, its signal output part respectively with the corresponding connection of three GPIO mouths of MCU, realize real-time detection to three the fan running statuses in television set inside.
Compared with prior art, advantage of the present utility model and good effect are: the utility model is by setting up testing circuit in existing TV set circuit, running status to fan detects in real time, and send testing result to MCU and judge, when MCU detects fan and breaks down, operation fan failure program, on video screen, show fault message, and control complete machine shutdown automatically after time-delay a period of time, thereby effectively avoided because the fan stall, made the overheated and parts damages that cause of machine intimate device, problems such as performance reduction, greatly improve the complete machine quality of tv product, prolonged its useful life.
Description of drawings
Fig. 1 is the concrete circuit connection diagram of fan operation troubles testing circuit in the utility model.
Embodiment
Below in conjunction with the drawings and specific embodiments the utility model is done explanation in further detail.
Its inside of television set of the present utility model is provided with three fan FAN1, FAN2, FAN3, and each fan links to each other with the GPIO mouth of MCU by a cover testing circuit, is annexation and the operation principle that example is specifically set forth its circuit with No. 1 fan FAN1.
Among Fig. 1, inserting sub-XP1 is the gang socket of fan FAN1, and PIN1 connects the grounding leg of fan FAN1, and PIN2 connects the supply pin of fan FAN1, and PIN3 connects the status signal output pin of fan FAN1.+ 12V DC power supply is through filter capacitor C2, C3 ground connection, and the ripple on the filter out power is for fan FAN1 provides stable working power.Insert the base stage of the PIN3 pin of sub-XP1 through switching diode D1, resistance R 4 connection NPN type triode V1, and through pull-up resistor R6 connection+12V DC power supply.The grounded emitter of described NPN type triode V1, collector electrode connects described+12V DC power supply through resistance R 2 on the one hand, the PORT COM 1 that connects MCU on the other hand through divider resistance R1, i.e. MCU GPIO mouth, the GPIO mouth of described MCU is through another divider resistance R3 ground connection.
When fan FAN1 works well, the status signal output pin of fan FAN1 is by PIN3 output low level signal, at this moment, the base voltage of triode V1 is a low level, and triode V1 ends, and resistance R 1, R2, R3 are formed bleeder circuit, and right+12V DC power supply is carried out dividing potential drop, make the PORT COM 1 of MCU be high level 3V, according to the communications protocol of this circuit module and MCU, this expression fan FAN1 operation is normal, the complete machine continuous firing.If fan FAN1 breaks down, stop operating, the status signal output pin of fan FAN1 is exported high level by PIN3, and+12V DC power supply affacts the positive pole of diode D1 by resistance R 6, controls its conducting, and then affact the base stage of triode V1 through resistance R 4, control its conducting, resistance R 1, R2, R3 form bleeder circuit makes the PORT COM 1 of MCU for low level 0V, according to the communications protocol of this circuit module and MCU, this expression fan FAN1 breaks down, and stops operating.MCU is behind the low level signal that detects PORT COM 1 input, operation fan failure program, the information that on video screen, shows " FAN1 fault; machine will cut out automatically " after 30 seconds, call user's attention, and make complete machine shutdown automatically after 30 seconds of delaying time, guarantee the complete machine safe operation with this, effectively avoid the damage of machine intimate components and parts, improved the reliability of tv product.
The operation principle of No. 2 fan FAN2 and No. 3 fan FAN3 and No. 1 fan FAN1 are identical.If two fans break down simultaneously, suppose that FAN1 and FAN3 break down, then MCU PORT COM 1 and MCU PORT COM 3 are low level 0V simultaneously, after MCU detects the low level signal of MCU PORT COM 1 and MCU PORT COM 3, operation fan failure program, on video screen, show the information of " FAN1 and FAN3 fault, machine will cut out automatically " after 30 seconds, and make complete machine shutdown automatically after 30 seconds of delaying time.If three fan FAN1, FAN2 and FAN3 break down simultaneously, then MCU PORT COM 1, MCU PORT COM 2 and MCU PORT COM 3 are low level 0V simultaneously, after MCU detects the low level signal of MCU PORT COM 1, MCU PORT COM 2 and MCU PORT COM 3, operation fan failure program, and the information of demonstration " FAN1, FAN2 and FAN3 fault; machine will cut out automatically " on video screen, and make complete machine shutdown automatically after 30 seconds of delaying time after 30 seconds.
More than be the operation principle of windy fan operation troubles real-time detection circuit, by this circuit module fan failure is detected in real time, just can be when one or more fan breaks down promptly and accurately warning, thereby the performance of effectively avoiding causing owing to the machine intimate device is overheated is damaged.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 (9)
1. fan operation troubles testing circuit, comprise MCU, fan and DC power supply, it is characterized in that: described fan state signal output part connects the control end of a controllable switch element, the gating end one end ground connection of described controllable switch element, the other end connects described DC power supply on the one hand, links to each other with the GPIO mouth of MCU on the other hand.
2. fan operation troubles testing circuit according to claim 1, it is characterized in that: described controllable switch element adopts a NPN type triode to realize, the base stage of described triode connects the fan state signal output part, grounded emitter, collector electrode connects described DC power supply on the one hand, links to each other with the GPIO mouth of MCU on the other hand.
3. fan operation troubles testing circuit according to claim 2 is characterized in that: described fan state signal output part connects the base stage of described NPN type triode through a switching diode, and connects described DC power supply through pull-up resistor.
4. fan operation troubles testing circuit according to claim 3 is characterized in that: the collector electrode of described NPN type triode connects the GPIO mouth of described MCU through a divider resistance, and through another divider resistance ground connection.
5. television set with described fan operation troubles testing circuit, comprise MCU, fan and DC power supply, it is characterized in that: described fan state signal output part connects the control end of a controllable switch element, the gating end one end ground connection of described controllable switch element, the other end connects described DC power supply on the one hand, links to each other with the GPIO mouth of MCU on the other hand.
6. the television set with fan operation troubles testing circuit according to claim 5, it is characterized in that: described controllable switch element adopts a NPN type triode to realize, the base stage of described triode connects the fan state signal output part, grounded emitter, collector electrode connects described DC power supply on the one hand, links to each other with the GPIO mouth of MCU on the other hand.
7. the television set with fan operation troubles testing circuit according to claim 6, it is characterized in that: described fan state signal output part connects the base stage of described NPN type triode through a switching diode, and connects described DC power supply through pull-up resistor.
8. the television set with fan operation troubles testing circuit according to claim 7 is characterized in that: the collector electrode of described NPN type triode connects the GPIO mouth of described MCU through a divider resistance, and through another divider resistance ground connection.
9. according to claim 5 or 6 described television sets with fan operation troubles testing circuit, it is characterized in that: include three groups at the fan operation troubles testing circuit described in the television set, its signal input part respectively with three corresponding connections of fan state signal output part, its signal output part respectively with the corresponding connection of three GPIO mouths of MCU.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520126131 CN2847752Y (en) | 2005-12-15 | 2005-12-15 | Fan operation fault detecting circuit and TV set with said detecting circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520126131 CN2847752Y (en) | 2005-12-15 | 2005-12-15 | Fan operation fault detecting circuit and TV set with said detecting circuit |
Publications (1)
| Publication Number | Publication Date |
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| CN2847752Y true CN2847752Y (en) | 2006-12-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520126131 Expired - Fee Related CN2847752Y (en) | 2005-12-15 | 2005-12-15 | Fan operation fault detecting circuit and TV set with said detecting circuit |
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| CN (1) | CN2847752Y (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN102128175A (en) * | 2010-01-15 | 2011-07-20 | 全汉企业股份有限公司 | Method for starting fan |
| 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 |
| CN104898009A (en) * | 2015-03-17 | 2015-09-09 | 杭州鸿雁电器有限公司 | Detection device for connected sensing device and detection method |
| CN112146903A (en) * | 2019-06-26 | 2020-12-29 | 珠海格力电器股份有限公司 | Fault identification method |
| CN114109885A (en) * | 2021-11-25 | 2022-03-01 | 阳光电源股份有限公司 | Detection board, power converter and complete machine fan detection method and system |
| CN114263630A (en) * | 2021-12-08 | 2022-04-01 | 凌云光技术股份有限公司 | Fan fault monitoring equipment and method of light source controller |
-
2005
- 2005-12-15 CN CN 200520126131 patent/CN2847752Y/en not_active Expired - Fee Related
Cited By (11)
| 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 |
| CN102128175A (en) * | 2010-01-15 | 2011-07-20 | 全汉企业股份有限公司 | Method for starting fan |
| 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 |
| CN104898009A (en) * | 2015-03-17 | 2015-09-09 | 杭州鸿雁电器有限公司 | Detection device for connected sensing device and detection method |
| CN104898009B (en) * | 2015-03-17 | 2024-02-13 | 杭州鸿雁电器有限公司 | Detection equipment and detection method for online sensing equipment |
| CN112146903A (en) * | 2019-06-26 | 2020-12-29 | 珠海格力电器股份有限公司 | Fault identification method |
| CN112146903B (en) * | 2019-06-26 | 2021-09-14 | 珠海格力电器股份有限公司 | Fault identification method |
| CN114109885A (en) * | 2021-11-25 | 2022-03-01 | 阳光电源股份有限公司 | Detection board, power converter and complete machine fan detection method and system |
| CN114109885B (en) * | 2021-11-25 | 2023-12-19 | 阳光电源股份有限公司 | Detection board, power converter and complete machine fan detection method and system |
| CN114263630A (en) * | 2021-12-08 | 2022-04-01 | 凌云光技术股份有限公司 | Fan fault monitoring equipment and method of light source controller |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |