CN201007800Y - Integrated control device for system fan - Google Patents

Abstract

The utility model provides a system fan integration control device, which is suitable for a computer system with multiple heat sources and multiple fans for cooling the heat sources respectively. Multiple detection units are used to detect the multiple heat sources and output multiple sets of temperature change parameter signals. The multiple temperature change parameter signals are received by a signal integration judgment circuit, and the multiple temperature change parameter signals are judged and determined to generate speed modulation signals. The signal integration judgment circuit is connected to an external driving power source through a fan driving circuit, and the speed modulation signal is received to synchronously adjust the driving power of the external driving power source to the multiple fans. Therefore, multiple heat sources can be detected at the same time and multiple fans of the integrated system can be synchronously dissipated, thereby effectively reducing the heat accumulation of the system environment.

Description

System Fan Integrated Control

technical field

The utility model relates to a fan control device, in particular to a system fan integration control device capable of detecting multiple heat sources and synchronously dissipating heat from multiple fans of the integrated system, thereby effectively reducing heat accumulation in the system environment.

Background technique

With the development of precision technology, the volume of electronic devices such as personal computers is shrinking day by day, but the performance continues to increase, which makes the problem of heat dissipation of electronic devices more and more serious. Please refer to the published Chinese Taiwan Patent No. 200619900, which discloses A temperature-sensing radiator provided by most patent documents or products, the main design concept is to continuously detect the temperature change of the heat source of the electronic device when the electronic device is in operation through the temperature detection circuit of thermistor or other temperature-sensing elements When the temperature detection circuit detects that the temperature of the heat source exceeds its preset temperature reference value, it sends a signal to the drive circuit to control the radiator to increase the corresponding speed to increase the cooling performance.

However, this method is increasingly unable to meet the needs of electronic devices. For example, there are multiple heat sources inside a general personal computer, such as a power supply, a central processing unit, a hard disk drive, a display card, and a casing. And corresponding to the position of the aforementioned heat source, fans for heat dissipation are respectively installed to reduce the temperature of the heat source. However, for the traditional fan control architecture, each fan can only increase the speed of the fan individually by adjusting the driving power after detecting the temperature rise of a single heat source. At the same time, the ambient temperature of the entire system rises. The traditional fan design does not take into account the adverse effects of environmental heat accumulation. Each group of fans is only responsible for cooling a single heat source, instead of synchronously controlling multiple fans in the system to increase the speed. (For example, the case fan also needs to increase its speed to discharge hot air out of the case). In this way, the temperature of the entire system is likely to rise due to heat convection, resulting in poor overall heat dissipation efficiency, which cannot effectively solve the problem of environmental heat accumulation.

Utility model content

The main purpose of the present invention is to provide a system fan integrated control device, which can simultaneously detect multiple heat sources and integrate multiple fans of the system to dissipate heat synchronously, thereby effectively reducing the problem of heat accumulation in the system environment.

In order to achieve the above purpose, the utility model is applicable to a computer system with multiple heat sources and multiple fans for respectively cooling the heat sources, and is characterized in that the system fan integrated control device includes: multiple detection units installed on multiple heat sources Detect multiple heat sources and output multiple sets of temperature change parameter signals; the signal integration judgment circuit is connected with multiple detection units to receive multiple temperature change parameter signals, and there is a signal integration means in the signal integration judgment circuit for multiple Discriminate and determine the speed modulation signal from two temperature change parameter signals; the fan drive circuit connects the signal integration judgment circuit and the external drive power source, and the fan drive circuit synchronously adjusts the external drive power source for multiple fans by receiving the speed modulation signal. drive electricity.

In summary, the utility model detects multiple heat sources through the system fan integration control device, and synchronously adjusts the driving power of the external drive power source for multiple fans, and multiple fans of the integrated system simultaneously dissipate heat, thus effectively reducing Heat accumulation in the system environment.

Description of drawings

Fig. 1 is the circuit diagram of preferred embodiment of the present utility model;

Fig. 2 is the circuit diagram of preferred embodiment of the utility model;

Fig. 3 is a structural diagram of a preferred embodiment of the utility model;

Fig. 4 is the structural diagram of the second preferred embodiment of the present utility model; And

Fig. 5 is a structural diagram of the third preferred embodiment of the utility model.

Detailed ways

Relevant detailed description and technical contents of the utility model are as follows in conjunction with the accompanying drawings:

Please refer to Fig. 1 and Fig. 3, which are circuit diagrams and structure diagrams of preferred embodiments of the present utility model, as shown in the figure: the utility model is an integrated control device for system fans, which is suitable for multiple heat sources 11-15 and multiple The computer system 10 of the fans 21-25 cooling the heat sources 11-15 respectively, the heat sources 11-15 can be (but not limited to) the power supply inside the computer system 10, the central processing unit, the display card, the disk Hardware or inside the computer system, etc., the system fan integrated control device 1 includes:

A plurality of detection units 2, the detection units 2 are thermistors, installed on the plurality of heat sources 11-15, detect the plurality of heat sources 11-15 and output a plurality of sets of temperature change parameter signals 3.

Signal integration and judgment circuit 4, the signal integration and judgment circuit 4 can be a micro control unit (MCU), connected with the plurality of detection units 2 to receive the plurality of temperature change parameter signals 3, in the signal integration and judgment circuit 4 there is a signal The integration means (signal integration device) is used to discriminate and determine the speed modulation signal 5 for the plurality of temperature change parameter signals 3, wherein the speed modulation signal 5 is the maximum value parameter of multiple sets of temperature change parameter signals 3 The signal is used as the speed modulation signal 5 , or the average parameter signal of multiple sets of temperature change parameter signals 3 is taken as the speed modulation signal 5 .

The fan drive circuit 6 is connected to the signal integration judgment circuit 4 and the external drive power source 7, and the fan drive circuit 6 synchronously adjusts the drive power of the external drive power source 7 to the plurality of fans 21-25 by receiving the speed modulation signal 5 8.

Please refer to Fig. 2, which is a circuit diagram of a preferred embodiment of the present utility model, as shown in the figure, wherein the signal integration judgment circuit 4 includes: a signal conversion unit 41 (such as an integrating circuit) that integrates and calculates multiple sets of temperature variation parameter signals 3, and A logic unit 42 (such as an OR gate) is set up to filter the temperature change parameter signal 3 to generate the speed modulation signal 5 by setting the parameter level. And the fan drive circuit 6 has a comparison unit 61 that receives the speed modulation signal 5, the comparison unit 61 is connected to a drive signal generation unit 62, and the driving signal output by the drive signal generation unit 62 is corrected with the speed modulation signal 5 as a level. signal 621 , thereby generating a fan speed signal 611 to the power switch 63 , and the power switch 63 determines the driving power 8 of the external driving power source 7 for the plurality of fans 21 - 25 through the fan speed signal 611 .

The system fan integrated control device 1 of the present utility model is not limited to the external controller shown in FIG. 3 , it can also be set on the motherboard 16 as shown in FIG. 4 , or set on the computer as shown in FIG. 5 Inside the power supply (heat source 11) inside the system 10, no matter where the system fan integrated control device 1 is installed, there is a main power line 30 connected to the power supply to obtain power, and connected to each fan 21-25. A signal transmission line 31 for transmitting the temperature change parameter signal 3 and a power transmission line 32 for providing the driving power 8 are connected between them.

In summary, the utility model detects multiple heat sources 11-15 through the fan integrated control device 1 of the system, and synchronously adjusts the drive power 8 of the external drive power source 7 for multiple fans 21-25, and integrates multiple heat sources of the system. The fans 21 - 25 dissipate heat synchronously, thus effectively reducing heat accumulation in the system environment.

The above descriptions are only preferred embodiments of the present utility model, and are not intended to limit the present utility model. In the above embodiments, the present utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present utility model shall be included in the protection scope of the present utility model.

Claims (11)

1. An integrated control device for a system fan, suitable for a computer system (10) having multiple heat sources (11-15) and multiple fans (21-25) cooling the heat sources (11-15) respectively, wherein It is characterized in that the system fan integrated control device (1) includes: Multiple detection units (2), installed on the multiple heat sources (11-15), detect the multiple heat sources (11-15) and output multiple sets of temperature change parameter signals (3); The signal integration judgment circuit (4) is connected with the plurality of detection units (2) to receive the plurality of temperature change parameter signals (3), and the signal integration judgment circuit (4) has a signal integration means for Discriminate and determine the speed modulation signal (5) for the plurality of temperature change parameter signals (3); and the fan drive circuit (6), connect the signal integration judgment circuit (4) and the external drive power source (7 ), the fan driving circuit (6) synchronously adjusts the driving power (8) of the external driving power source (7) for the plurality of fans (21-25) by receiving the speed modulation signal (5). 2. The system fan integrated control device according to claim 1, characterized in that: The detection unit (2) is a thermistor. 3. The system fan integrated control device according to claim 1, characterized in that, the signal integration judgment circuit (4) includes a signal conversion unit (41) for integrating and calculating multiple sets of temperature change parameter signals (3) and setting parameters The level is used to filter the temperature change parameter signal (3) to generate the logic unit (42) of the rotational speed modulation signal (5). 4. The system fan integrated control device according to claim 1 or 3, characterized in that, the speed modulation signal (5) is the maximum value parameter signal of multiple sets of temperature change parameter signals (3) as the speed modulation signal (5). 5. The system fan integrated control device according to claim 1 or 3, characterized in that the speed modulation signal (5) is an average value parameter signal of multiple sets of temperature change parameter signals (3) as the speed modulation signal (5). 6. The system fan integrated control device according to claim 1 or 3, characterized in that, the fan drive circuit (6) has a comparison unit (61) for receiving the speed modulation signal (5), and the comparison The unit (61) is connected with a drive signal generation unit (62), and the drive signal (621) output by the drive signal generation unit (62) is corrected with the speed modulation signal (5) as a level to generate a fan speed signal ( 611) to the power switch (63), the power switch (63) determines the driving power (8) of the external driving power source (7) for the plurality of fans (21-25) through the fan speed signal (611). 7. The system fan integrated control device according to claim 1, characterized in that the signal integration judgment circuit (4) is a micro control unit (MCU). 8 . The system fan integrated control device according to claim 1 , characterized in that, the system fan integrated control device ( 1 ) is arranged on a motherboard ( 16 ) inside the computer system ( 10 ). 9 . The system fan integrated control device according to claim 1 , wherein the system fan integrated control device ( 1 ) is arranged inside a power supply inside the computer system ( 10 ). 10 . 10. The system fan integrated control device according to claim 1, characterized in that the system fan integrated control device (1) is an external controller. 11. The system fan integrated control device according to claim 1, characterized in that, the heat source (11-15) can be a power supply, or a central processing unit, or a display card, or a hard disk drive and a computer system (10 )internal.

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