CN203009344U - Fan speed control system provided with rotating speed signal output - Google Patents
Fan speed control system provided with rotating speed signal output Download PDFInfo
- Publication number
- CN203009344U CN203009344U CN 201220622786 CN201220622786U CN203009344U CN 203009344 U CN203009344 U CN 203009344U CN 201220622786 CN201220622786 CN 201220622786 CN 201220622786 U CN201220622786 U CN 201220622786U CN 203009344 U CN203009344 U CN 203009344U
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- fan
- control chip
- speed
- control
- microcontroller
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- Control Of Positive-Displacement Air Blowers (AREA)
Abstract
The utility model discloses a fan speed control system provided with a rotating speed signal output. The fan speed control system comprises a control mechanism which is arranged on a fan F and adjusts the rotating speed of the fan F, wherein the control mechanism comprises a temperature sensor, a microcontroller and a control chip which are connected sequentially; the fan F is connected onto the control chip; the microcomputer is a processing module which can transmit a temperature signal acquired by the temperature sensor to the control chip; and the control chip is a control module capable of reading the rotating speed signal and transmitting the rotating signal to the microcomputer for control. The fan speed control system provided with the rotating speed signal output is simple in structure and reasonable in design, adopts the control chip to obtain the rotating speed of the fan F, and adjusts the speed of the fan F according to a speed instruction sent by the microcontroller, so that the functions of monitoring and adjusting the speed of the fan F automatically are achieved, the service life of the fan F is prolonged effectively, and the circuit power consumption is reduced.
Description
Technical field
The utility model relates to the speed control field, specifically, is the fan Speed control system with tach signal output.
Background technique
Existing intergrated circuit (IC) semiconductor fabrication process that adopt more, make the components and parts such as many transistors and resistor, capacitor on a less monocrystalline silicon piece, and according to the method for multilayer wiring or tunnel wiring, components and parts are combined into complete electronic circuit.In the actual fabrication process, the IC artificer makes every effort to put into the transistor of more high speed operations in more and more less encapsulation, but this certainly will will cause heating, for these high powers IC circuit is put in less encapsulation, just must effectively solve heat management problems.In the practical application of a lot of IC circuit, often lower the temperature with fan, but in this simultaneously, the use of fan can bring mechanical failure, increases power consumption and noise, therefore, the utility model proposes a kind of fan Speed control system, utilizing the fan with tach signal output is to be used in conjunction with, and has reached the purpose of controller rotating speed, reduce the power consumption of fan, structure is extremely simple.
The model utility content
The purpose of this utility model is to provide the fan Speed control system with tach signal output, utilize control mechanism that the fan F with tach signal output is controlled, in using process, can constantly read the tach signal of fan F, and the connecting inner circuit structure controls the voltage at fan F two ends, thereby reach the purpose of controlling its rotating speed, reasonable in design, circuit structure is simple, more reduces System noise and power consumption provides safeguard, and has extended the life-span of fan F.
The utility model is achieved through the following technical solutions: with the fan Speed control system of tach signal output, comprise and be located at the control mechanism that fan F went up and regulated its rotating speed, described fan F is the cooling device with tach signal output, can effectively solve the problem of IC circuit heat management, in actual application, control mechanism can constantly read the tach signal of fan F, and the connecting inner circuit structure is controlled the voltage at fan F two ends, to reach the purpose of controlling its rotating speed, reduce the power consumption of fan F, energy-conserving and environment-protective.in the utility model, described control mechanism comprises the temperature sensing device that is connected successively, microcontroller and control chip, described fan F is connected on control chip, described microcontroller is sent to the puocessing module of control chip for the temperature signal that temperature sensing device is collected, described control chip is for to read tach signal and to be sent to the control module that microcontroller is controlled, in use, control chip can utilize the speed command that microcontroller provides to carry out the speed adjusting, simultaneously, can also realize the automatic monitoring of fan F, after in case speed command is sent to control chip, microcontroller just can no longer be got involved, effectively reduced the workload of software in the control circuit.
For better realizing the utility model, microcontroller and control chip carry out data transmission by two line interfaces, that is: definition has SCL interface, SDA interface on described control chip, and described microcontroller is connected with control chip by SCL interface, SDA interface.
The utility model also defines on described control chip TACHO interface, OUT interface, described fan F is connected with control chip by TACHO interface, OUT interface, wherein, control chip is controlled voltage, the speed of fan F by OUT interface outputting analog signal, obtains the tach signal of fan F by the TACHO interface.
For better realizing said structure, described control chip is MAX6650; Described microcontroller is single chip computer AT 89S52; Described temperature sensing device is MAX6625.
The utility model compared with prior art has the following advantages and beneficial effect:
(1) the utility model is reasonable in design, adopt control chip can obtain the tach signal of fan F, and by the speed command that microcontroller provides, the speed of fan F is regulated, can realize the function of automatic monitoring and adjusting fan F speed, effectively extend the working life of fan F, reduced circuit power consumption.
(2) the utility model is simple in structure, all adopts connection interface to be connected between microcontroller, fan F and control chip, and peripheral circuit is simple in structure, and energy consumption is low.
Description of drawings
Fig. 1 is theory diagram of the present utility model.
Fig. 2 is electrical block diagram of the present utility model.
Embodiment
Below in conjunction with embodiment, the utility model is described in further detail, but mode of execution of the present utility model is not limited to this.
Embodiment:
development along with modern electronic technology, the IC artificer also makes every effort to put into the transistor of more high speed operations in more and more less encapsulation, but this certainly will will cause heating, therefore, for effectively solving the heat management problems of IC circuit, the utility model proposes the fan Speed control system with tach signal output, be mainly used in the have velocity transducer fan assembly of (or tachometer), its structure as shown in Figure 1, comprise and be located at the control mechanism that fan F went up and regulated its rotating speed, fan F is the cooling device with tach signal output, can effectively solve the problem of IC circuit heat management, in actual application, control mechanism can constantly read the tach signal of fan F, and the connecting inner circuit structure is controlled the voltage at fan F two ends, thereby reach the purpose of controlling its rotating speed, simultaneously, can also monitor fan F, reduce the power consumption of fan F, energy-conserving and environment-protective.
In the utility model, control mechanism mainly is comprised of the temperature sensing device, microcontroller and the control chip that are connected successively, fan F is connected on control chip, microcontroller is sent to the puocessing module of control chip for the temperature signal that temperature sensing device is collected, as shown in Figure 2, microcontroller can adopt single chip computer AT 89S52, and temperature sensing device can adopt MAX6625, but in the actual fabrication process, can adopt similar I
2Two line interfaces of C are connected.Control chip is to read tach signal and be sent to the control module that microcontroller is controlled, can adopt MAX6650 to be made, as shown in Figure 2, definition has SCL interface, SDA interface, TACHO interface and OUT interface respectively on control chip, microcontroller is connected with control chip by SCL interface, SDA interface, the SDA interface can be realized the data transmission between microcontroller and control chip, that is: the measurement temperature of temperature sensing device can be sent to control chip, also can obtain the tach signal of the fan F output that control chip reads; As shown in Figure 2, TACHO interface and OUT interface can be realized being connected of control chip and fan F, and wherein, control chip is controlled voltage, the speed of fan F by OUT interface outputting analog signal, obtains the tach signal of fan F by the TACHO interface.
the circuit structure that the tach signal that a kind of use that is actually the utility model reads is measured and regulated fan F speed, the speed controller that control chip is used for fan F, read temperature with microcontroller from temperature sensing device, and from the control chip reading speed, then control voltage and the speed at fan F two ends by the internal circuit (DAC) of control chip, in use, microcontroller must constantly read the speed of fan F and the speed of regulating fan F by DAC, this is particularly important in startup and stop phase, can effectively reduce the power consumption of fan F, extended the working life of fan F.When carrying out the speed adjusting with control chip, can utilize microcontroller to provide speed command, and with control chip automatic monitoring and the speed of regulating fan F, after in case speed command is sent to control chip, microcontroller just can no longer be got involved, and has effectively reduced the workload of software in the control circuit.
The utility model is simple in structure, reasonable in design, adopt control chip can obtain the tach signal of fan F, and by the speed command that microcontroller provides, the speed of fan F is regulated, can realize the function of automatic monitoring and adjusting fan F speed, effectively extend the working life of fan F, reduced circuit power consumption.
The above; it is only preferred embodiment of the present utility model; be not that the utility model is done any pro forma restriction, any simple modification, equivalent variations that every foundation technical spirit of the present utility model is done above embodiment are within all falling into protection domain of the present utility model.
Claims (6)
1. the fan Speed control system of exporting with tach signal, it is characterized in that: comprise and be located at the control mechanism that fan F went up and regulated its rotating speed, described control mechanism comprises temperature sensing device, microcontroller and the control chip that is connected successively, described fan F is connected on control chip, described microcontroller is sent to the puocessing module of control chip for the temperature signal that temperature sensing device is collected, described control chip is for to read tach signal and to be sent to the control module that microcontroller is controlled.
2. the fan Speed control system with tach signal output according to claim 1, it is characterized in that: definition has SCL interface, SDA interface on described control chip, and described microcontroller is connected with control chip by SCL interface, SDA interface.
3. the fan Speed control system with tach signal output according to claim 2, it is characterized in that: also definition has TACHO interface, OUT interface on described control chip, and described fan F is connected with control chip by TACHO interface, OUT interface.
4. the described fan Speed control system with tach signal output of according to claim 1～3 any one, it is characterized in that: described control chip is MAX6650.
5. the fan Speed control system with tach signal output according to claim 4, it is characterized in that: described microcontroller is single chip computer AT 89S52.
6. the fan Speed control system with tach signal output according to claim 5, it is characterized in that: described temperature sensing device is MAX6625.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220622786 CN203009344U (en) | 2012-11-22 | 2012-11-22 | Fan speed control system provided with rotating speed signal output |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220622786 CN203009344U (en) | 2012-11-22 | 2012-11-22 | Fan speed control system provided with rotating speed signal output |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203009344U true CN203009344U (en) | 2013-06-19 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220622786 Expired - Fee Related CN203009344U (en) | 2012-11-22 | 2012-11-22 | Fan speed control system provided with rotating speed signal output |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203009344U (en) |
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2012
- 2012-11-22 CN CN 201220622786 patent/CN203009344U/en not_active Expired - Fee Related
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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: 20130619 Termination date: 20131122 |