CN205446129U - Automatic adjust fan speed's circuit structure - Google Patents
Automatic adjust fan speed's circuit structure Download PDFInfo
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- CN205446129U CN205446129U CN201521065345.1U CN201521065345U CN205446129U CN 205446129 U CN205446129 U CN 205446129U CN 201521065345 U CN201521065345 U CN 201521065345U CN 205446129 U CN205446129 U CN 205446129U
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- fan
- main control
- control chip
- mcu
- circuit structure
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Abstract
The utility model discloses an automatic adjust fan speed's circuit structure, including main control chip, the MCU who connects this main control chip, temperature sensor who connects MCU and height above sea level sensor, the FPGA who connects MCU and connection FPGA's fan. The utility model discloses effectively reduce main control chip's load, improved system operation efficiency and response speed to avoided the card machine that arouses because of main control chip overload and crashed.
Description
Technical field
This utility model relates to projector equipment field, particularly relates to the fan control circuitry in laser projection.
Background technology
Along with the range of application of scialyscope is increasingly wider, scialyscope is by the area surroundings being likely to be applied to various height above sea level, but along with the rising of height above sea level, the heat radiation of scialyscope will be greatly affected；And existing scialyscope cannot adjust rotation speed of the fan by detecting ambient temperature or height above sea level simultaneously, scialyscope the most just normally cannot work in high altitude localities, probably due to temperature is too high and quits work；It addition, during to the control of fan, it is desirable to after the real-time judge to ambient temperature and height above sea level, fan is adjusted to corresponding rotating speed, the fan of existing scialyscope is directly by main control chip control so that the load of main control chip is the highest, the work abnormalities such as operation slow, the deadlock of reaction easily occurs.
Utility model content
The purpose of this utility model is to provide a kind of circuit structure being automatically adjusted rotation speed of the fan, under different height above sea level and ambient temperature, the rotating speed of radiator fan is different, controls rotation speed of the fan without main control chip, reduce the load of main control chip, it is to avoid because of the excessive card machine caused of main control chip load and deadlock.
The technical solution of the utility model is a kind of circuit structure being automatically adjusted rotation speed of the fan, the MCU that including main control chip, connects this main control chip, the temperature sensor connecting MCU and height above sea level sensor, connects the FPGA of MCU and connects the fan of described FPGA.MCU controls the rotating speed of fan by FPGA, main control chip is freed, main control chip only reads the error feedback information about fan at MCU, then subsequent treatment is carried out, effectively reduce the load of main control chip, improve running efficiency of system and response speed, thus promote client's experience.
Further, MCU connects described FPGA by Serial Peripheral Interface (SPI).MCU receives after the signal of temperature sensor and height above sea level sensor, carries out computing, draws the rotary speed data of fan under current environmental temperature and height above sea level.The data about rotation speed of the fan that FPGA sends according to MCU, send corresponding clock frequency and the square wave of dutycycle to fan, adjust the PWM of fan, thus adjust the rotating speed of fan.
Further, main control chip uses DDP4422 type image and the signal processing chip of TI company.
Further, MCU uses the C8051F310 type processor of SILICONLABS company, is the microprocessor of high integration, low in energy consumption, and operational efficiency is high.
Further, the model of FPGA is XC3S50AN.MCU reads the current rotary regimes information of fan by Serial Peripheral Interface (SPI) from FPGA, it is simple to adjust rotary speed data.
Beneficial effect: this utility model effectively reduces the load of main control chip, improves running efficiency of system and response speed, thus avoids because of the excessive card machine caused of main control chip load and deadlock.
Accompanying drawing explanation
Fig. 1 is automatically adjusted the circuit relationships block diagram of rotation speed of the fan.
Labelling in figure: 1-main control chip；2-MCU；3-temperature sensor；4-height above sea level sensor；5-FPGA；6-fan.
Detailed description of the invention
Below in conjunction with the accompanying drawings, preferably embodiment of the present utility model is described in further detail:
In conjunction with Fig. 1, a kind of circuit structure being automatically adjusted fan 6 rotating speed, the MCU2 including main control chip 1, connecting this main control chip 1, connect the temperature sensor 3 of MCU2 and height above sea level sensor 4, connect the FPGA5 of MCU2 and connect the fan 6 of described FPGA5.MCU2 controls the rotating speed of fan 6 by FPGA5, main control chip 1 is freed, main control chip 1 reads the error feedback information about fan 6 by 12C (Inter-IntegratedCircuit) at MCU2, then subsequent treatment is carried out, effectively reduce the load of main control chip 1, improve running efficiency of system and response speed, thus promote client's experience.
Described MCU2 connects described FPGA5 by Serial Peripheral Interface (SPI).MCU2 receives after the signal of temperature sensor 3 and height above sea level sensor 4, carries out computing, draws the rotary speed data of fan 6 under current environmental temperature and height above sea level.The data about fan 6 rotating speed that FPGA5 sends according to MCU2, send corresponding clock frequency and the square wave of dutycycle to fan 6, adjust the PWM of fan 6, thus adjust the rotating speed of fan 6.Main control chip 1 is also connected with other circuit and display unit.
Main control chip 1 uses DDP4422 type image and the signal processing chip of TI company.
MCU2 uses the C8051F310 type processor of SILICONLABS company, is the microprocessor of high integration, low in energy consumption, and operational efficiency is high.
The model of FPGA5 is XC3S50AN.MCU2 reads the current rotary regimes information of fan 6 by Serial Peripheral Interface (SPI) from FPGA5 (Field-ProgrammableGateArray), it is simple to adjust rotary speed data.
In a specific embodiment, under different ambient temperatures and height above sea level, the test data of fan 6 rotating speed are as follows:
| Height above sea level (m) | Ambient temperature (DEG C) | Required rotation speed of the fan |
| 0 | 23 | 35% |
| 0 | 25 | 40% |
| 0 | 27 | 45% |
| … | … | … |
| 200 | 23 | 37% |
| 200 | 25 | 42% |
| 200 | 27 | 47% |
| … | … | … |
| 400 | 23 | 39% |
| 400 | 25 | 44% |
| 400 | 27 | 49% |
| … | … | … |
| … | … | … |
As can be seen from the above table, same height above sea level, ambient temperature is the highest, and under the control of MCU2, the rotating speed of fan 6 is the fastest；Under same ambient temperature, height above sea level is the highest, and air is the thinnest, and the heat-conducting medium in air is the fewest, and under the control of MCU2, the rotating speed of fan 6 is the fastest.Achieve the purpose of this utility model.
In another embodiment, main control chip 1 operational efficiency in prior art and the present embodiment and response speed being contrasted respectively, find that main control chip 1 power consumption in the present embodiment is lower, response speed is faster.It is specifically shown in following table:
| Contrast project | Former technology | This utility model |
| Main control chip power consumption | 4.1W | 3.5W |
| Main control chip response speed | 1.5s | 0.8s |
This utility model effectively reduces the load of main control chip 1, improves running efficiency of system and response speed, thus avoids because of the excessive card machine caused of main control chip 1 load and deadlock.
Above content is to combine concrete preferred implementation further detailed description of the utility model, it is impossible to assert that of the present utility model being embodied as is confined to these explanations.For this utility model person of an ordinary skill in the technical field, without departing from the concept of the premise utility, it is also possible to make some simple deduction or replace, all should be considered as belonging to protection domain of the present utility model.
Claims (5)
1. the circuit structure being automatically adjusted rotation speed of the fan, it is characterised in that: include main control chip, connect the MCU of this main control chip, the temperature sensor connecting MCU and height above sea level sensor, the FPGA of connection MCU and connect the fan of described FPGA.
The circuit structure being automatically adjusted rotation speed of the fan the most according to claim 1, it is characterised in that: MCU connects described FPGA by Serial Peripheral Interface (SPI).
The circuit structure being automatically adjusted rotation speed of the fan the most according to claim 2, it is characterised in that: the model of main control chip is DDP4422.
The circuit structure being automatically adjusted rotation speed of the fan the most according to claim 2, it is characterised in that: the model of MCU is C8051F310.
The circuit structure being automatically adjusted rotation speed of the fan the most according to claim 2, it is characterised in that: the model of FPGA is XC3S50AN.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521065345.1U CN205446129U (en) | 2015-12-18 | 2015-12-18 | Automatic adjust fan speed's circuit structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521065345.1U CN205446129U (en) | 2015-12-18 | 2015-12-18 | Automatic adjust fan speed's circuit structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205446129U true CN205446129U (en) | 2016-08-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201521065345.1U Active CN205446129U (en) | 2015-12-18 | 2015-12-18 | Automatic adjust fan speed's circuit structure |
Country Status (1)
| Country | Link |
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| CN (1) | CN205446129U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106909209A (en) * | 2017-02-28 | 2017-06-30 | 郑州云海信息技术有限公司 | A kind of height above sea level modification method and system for server fan regulation and control |
| CN107368122A (en) * | 2017-08-08 | 2017-11-21 | 南京华讯方舟通信设备有限公司 | Laser-projector and for automatic temperature control system therein and control method |
| CN108506238A (en) * | 2018-03-02 | 2018-09-07 | 盛科网络（苏州）有限公司 | The method of Ethernet switching chip integration fan controller |
| CN109958647A (en) * | 2019-03-26 | 2019-07-02 | 苏州浪潮智能科技有限公司 | A kind of fan rotational frequency control method, system and electronic equipment and storage medium |
-
2015
- 2015-12-18 CN CN201521065345.1U patent/CN205446129U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106909209A (en) * | 2017-02-28 | 2017-06-30 | 郑州云海信息技术有限公司 | A kind of height above sea level modification method and system for server fan regulation and control |
| CN107368122A (en) * | 2017-08-08 | 2017-11-21 | 南京华讯方舟通信设备有限公司 | Laser-projector and for automatic temperature control system therein and control method |
| CN108506238A (en) * | 2018-03-02 | 2018-09-07 | 盛科网络（苏州）有限公司 | The method of Ethernet switching chip integration fan controller |
| CN109958647A (en) * | 2019-03-26 | 2019-07-02 | 苏州浪潮智能科技有限公司 | A kind of fan rotational frequency control method, system and electronic equipment and storage medium |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP03 | Change of name, title or address |
Address after: Nanshan District Shahe road Shenzhen city Guangdong province 518000 No. 3011 Baisha building 8415 Patentee after: Shenzhen city reflect Polytron Technologies Inc Address before: Liteon No. 1 building, 518000 Guangdong Province, Shenzhen high tech Zone of Nanshan District City, North Beihuan Avenue North Pine Road 1506 room Patentee before: AVANZA Corporation |