Cooling fan control device

Abstract

The invention relates to the technical field of heat dissipation control of electronic equipment, and discloses a cooling fan control device which comprises a control mechanism, a dismounting mechanism is arranged at the bottom of the control mechanism, and a ventilation mechanism is arranged at the top of the control mechanism; the control mechanism comprises a bottom plate, a top plate is arranged at the top of the bottom plate, a fan is arranged at the top of the bottom plate, a direct current motor is fixedly connected to the bottom of the fan, a microprocessor is arranged at the bottom of the fan, and the microprocessor and the bottom plate are installed. According to the cooling fan control device, after electronic equipment is started, a temperature sensor and a load sensor start to collect data in real time and transmit the data to a microprocessor through an SPI or I2C interface, after the microprocessor receives the data, a proper fan rotating speed instruction is calculated according to a preset self-adaptive PID algorithm and output to a direct current motor through a PWM signal, and the direct current motor controls the fan to rotate. And after the direct current motor receives the PWM signal, the power supply voltage is adjusted, so that the rotating speed of the fan is changed, and accurate temperature control is realized.

Description

Technical Field

[0001] The invention relates to the technical field of heat dissipation control of electronic equipment, in particular to a cooling fan control device. Background Art

[0002] As the performance of electronic devices continues to improve, the heat generated is also increasing. How to effectively dissipate heat has become an important research topic. Traditional heat dissipation methods mainly include air cooling, water cooling and other forms. Among them, air cooling has been widely used in many occasions due to its low cost and simple maintenance. However, the existing air cooling system still has a lot of room for improvement in heat dissipation efficiency and energy efficiency.

[0003] In the specific solutions of the prior art, the fan speed constant control has high reliability, but the fan speed cannot be dynamically adjusted according to the actual load changes, resulting in high energy consumption. The temperature threshold control can save energy to a certain extent, but it is prone to frequent switching when the temperature fluctuates greatly, affecting the fan life and system stability. PID control has good stability and response speed, but there is also the problem of complex parameter adjustment. Different application scenarios require different parameter configurations, which increases the difficulty of debugging. Summary of the invention

[0004] The object of the present invention is to provide a cooling fan control device to solve the problems raised in the above background technology.

[0005] In order to solve the above technical problems, the present invention provides the following technical solutions: a cooling fan control device, comprising a control mechanism, a disassembly mechanism is provided at the bottom of the control mechanism, and a ventilation mechanism is provided at the top of the control mechanism; The control mechanism comprises a bottom plate, a top plate is arranged on the top of the bottom plate, a fan is arranged on the top of the bottom plate, a DC motor is fixedly connected to the bottom of the fan, a microprocessor is arranged on the bottom of the fan, and the microprocessor is installed on the bottom plate; The disassembly mechanism comprises a fixing block, a cross bolt is arranged on the top of the fixing block, a fan frame is arranged on the top of the fixing block, a connecting plate is fixedly connected inside the fan frame, and a screen is arranged on the top of the connecting plate.

[0006] Among them, the microprocessor: model is STM32F103RCT6, which has rich I / O interfaces and powerful computing power, built-in adaptive PID control algorithm, and can dynamically adjust PID parameters according to changes in temperature and load; DC motor: model is EC45D10-12V, rated voltage is 12V, maximum speed is 12000RPM, supports PWM signal input, and can smoothly adjust the speed according to the instructions issued by the controller.

[0007] Preferably, a temperature sensor is installed on the top of the base plate, and a load sensor is installed on the top of the base plate.

[0008] Among them, the temperature sensor: model DS18B20, accuracy ±0.5℃, response time 750ms, load sensor: model ACS712, measurement range 0-30A, sensitivity 66mV / A, temperature sensors are installed in key heating areas of electronic equipment, such as near core components such as CPU and GPU, and load sensors are integrated in the power management system to collect the working current or power of the equipment in real time.

[0009] Preferably, a plurality of the fixing blocks are provided, and the plurality of the fixing blocks are arranged in a rectangular array, and the bottoms of the plurality of the fixing blocks are fixedly connected to the same bottom plate.

[0010] Preferably, threaded holes are provided inside the plurality of fixing blocks, the plurality of threaded holes are adapted to the cross bolts, and the bottoms of the plurality of cross bolts are movable through the interior of the same fan frame and extend to the bottom thereof.

[0011] Preferably, two connecting plates are provided, installation grooves are provided inside the two connecting plates, fans are installed inside the two installation grooves, a spring is fixedly connected to the top of the connecting plate, and the top of the spring is fixedly connected to the screen.

[0012] Preferably, the ventilation mechanism includes a support plate, the bottom of the support plate is fixedly connected to the top plate, the right side of the support plate is fixedly connected to an electric push rod, the output end of the electric push rod is fixedly connected to a push bar, and the bottom of the push bar is fixedly connected to a cover plate.

[0013] Preferably, a ventilation hole is opened inside the top plate, a ventilation plate is installed in the ventilation hole, and the top of the ventilation plate is in contact with the cover plate.

[0014] Preferably, a plurality of first air outlets are provided inside the cover plate, a plurality of second air outlets are provided inside the ventilation plate, and the plurality of first air outlets are matched with the second air outlets.

[0015] Preferably, a plurality of the electric push rods are provided, and the left sides of the plurality of electric push rods are fixedly connected to the same support plate.

[0016] Compared with the prior art, the beneficial effects achieved by the present invention are: First, in the present invention, when the electronic device is started, the temperature sensor and the load sensor begin to collect data in real time, and transmit the data to the microprocessor through the SPI or I2C interface. After receiving the data, the microprocessor calculates the appropriate fan speed instruction according to the preset adaptive PID algorithm, and outputs it to the DC motor through the PWM signal. After receiving the PWM signal, the DC motor adjusts the supply voltage, thereby changing the fan speed, achieving precise temperature control, and realizing intelligent control of the cooling fan. It can automatically adjust the speed according to different load conditions, effectively improve the heat dissipation efficiency and energy efficiency, reduce the frequent start and stop of the fan caused by temperature fluctuations, extend the service life of the fan, improve the overall stability of the system, simplify the configuration of control parameters, reduce the debugging time, and make the control system easier to deploy and maintain.

[0017] Second, the present invention uses a plurality of threaded holes inside the fixing blocks, and fixes the fan frame in mid-air by tightening the cross bolts inside the fan frame, and fixes the fan by a connecting plate inside the fan frame so that it will not shift position when rotating, and uses a screen on the top of the connecting plate to prevent the fan from driving dust and attaching it to the fan when working, thereby reducing the cooling efficiency of the fan and the cost of repeated cleaning. The spring on the top of the connecting plate is connected to the screen, and the vibration generated when the fan is running is shared to the screen through the spring, which can shake the dust on the screen to one side while absorbing the vibration, so as to facilitate subsequent disassembly and cleaning.

[0018] Third, the present invention fixes the electric push rod through the support plate, and starts the electric push rod to enable the cover plate to move left and right on the top of the ventilation plate through the push strip. When the fan is working, the position of the cover plate is moved by the electric push rod to align it with the ventilation plate so that the first air outlet and the second air outlet are in the same position, which is convenient for air circulation and enhances the cooling ability of the fan. When the machine is idle, the cover plate is moved by the electric push rod so that the first air outlet of the cover plate and the second air outlet of the ventilation plate are staggered, so that external dust will not naturally fall onto the fan, thereby reducing the number of cleaning times and lowering maintenance costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a three-dimensional schematic diagram of the overall structure of the present invention; Figure 2 It is a three-dimensional schematic diagram of the structural control mechanism of the present invention; Figure 3 This is a disassembled schematic diagram of the structural control mechanism of the present invention; Figure 4 It is a three-dimensional schematic diagram of the structural disassembly mechanism of the present invention; Figure 5 This is a schematic diagram of the disassembly of the structural disassembly mechanism of the present invention; Figure 6 It is a three-dimensional schematic diagram of the structural ventilation mechanism of the present invention; Figure 7 This is a schematic diagram of the disassembly of the structural ventilation mechanism of the present invention.

[0020] Legend: 1. Control mechanism; 101. Bottom plate; 102. Top plate; 103. Fan; 104. DC motor; 105. Microprocessor; 106. Temperature sensor; 107. Load sensor; 2. Disassembly mechanism; 201. Fixing block; 202. Fan frame; 203. Cross bolt; 204. Connecting plate; 205. Screen; 206. Spring; 3. Ventilation mechanism; 301. Support plate; 302. Electric push rod; 303. Push strip; 304. Cover plate; 305. Ventilation plate. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0022] Embodiment 1 like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 and Figure 7 As shown, the present invention provides a technical solution: a cooling fan control device, comprising a control mechanism 1, a disassembly mechanism 2 is provided at the bottom of the control mechanism 1, and a ventilation mechanism 3 is provided at the top of the control mechanism 1; The control mechanism 1 includes a base plate 101 , a top plate 102 is arranged on the top of the base plate 101 , a fan 103 is arranged on the top of the base plate 101 , a DC motor 104 is fixedly connected to the bottom of the fan 103 , a microprocessor 105 is arranged at the bottom of the fan 103 , and the microprocessor 105 is installed with the base plate 101 .

[0023] A temperature sensor 106 is installed on the top of the bottom plate 101 , and a load sensor 107 is installed on the top of the bottom plate 101 .

[0024] Through the above technical solution, when the electronic device is started, the temperature sensor 106 and the load sensor 107 start to collect data in real time, and transmit it to the microprocessor 105 through the SPI or I2C interface. After receiving the data, the microprocessor 105 calculates the appropriate fan speed instruction according to the preset adaptive PID algorithm, and outputs it to the DC motor 104 through the PWM signal. After receiving the PWM signal, the DC motor 104 adjusts the power supply voltage, thereby changing the speed of the fan 103 to achieve precise temperature control.

[0025] Embodiment 2 like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 and Figure 7 As shown, the present invention provides a technical solution: a cooling fan control device, the disassembly mechanism 2 includes a fixed block 201, a cross bolt 203 is arranged on the top of the fixed block 201, a fan frame 202 is arranged on the top of the fixed block 201, a connecting plate 204 is fixedly connected to the inside of the fan frame 202, and a screen 205 is arranged on the top of the connecting plate 204.

[0026] A plurality of fixing blocks 201 are provided, and the plurality of fixing blocks 201 are arranged in a rectangular array, and the bottoms of the plurality of fixing blocks 201 are fixedly connected to the same bottom plate 101 .

[0027] Threaded holes are formed inside the plurality of fixing blocks 201 , and the plurality of threaded holes are adapted to the cross bolts 203 . The bottoms of the plurality of cross bolts 203 are movable through the interior of the same fan frame 202 and extend to the bottom thereof.

[0028] There are two connecting plates 204 , each of which has an installation groove inside, and fans 103 are installed inside the two installation grooves. A spring 206 is fixedly connected to the top of the connecting plate 204 , and the top of the spring 206 is fixedly connected to the screen 205 .

[0029] Through the above technical solution, the threaded holes inside the multiple fixing blocks 201 are used, and the fan frame 202 is fixed in mid-air by tightening the cross bolts 203 inside the fan frame 202, and the fan 103 is fixed by the connecting plate 204 inside the fan frame 202 so that it will not move when rotating, and the screen 205 on the top of the connecting plate 204 is used to prevent the fan 103 from driving dust to adhere to the fan 103 during operation, resulting in reduced cooling efficiency of the fan 103 and reduced cost of repeated cleaning. The spring 206 on the top of the connecting plate 204 is connected to the screen 205, and the vibration generated by the operation of the fan 103 is shared by the spring 206 to the screen 205, which can shake the dust on the screen 205 to one side while absorbing the vibration, so as to facilitate subsequent disassembly and cleaning.

[0030] Embodiment 3 like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 and Figure 7 As shown, the present invention provides a technical solution: a cooling fan control device, the ventilation mechanism 3 includes a support plate 301, the bottom of the support plate 301 is fixedly connected to the top plate 102, the right side of the support plate 301 is fixedly connected to an electric push rod 302, the output end of the electric push rod 302 is fixedly connected to a push strip 303, and the bottom of the push strip 303 is fixedly connected to a cover plate 304.

[0031] A vent is formed inside the top plate 102 , and a vent plate 305 is installed inside the vent. The top of the vent plate 305 is in contact with the cover plate 304 .

[0032] A plurality of first air outlets are provided inside the cover plate 304 , and a plurality of second air outlets are provided inside the ventilation plate 305 . The plurality of first air outlets are matched with the second air outlets.

[0033] A plurality of electric push rods 302 are provided, and the left sides of the plurality of electric push rods 302 are all fixedly connected to the same support plate 301 .

[0034] Through the above technical solution, the electric push rod 302 is fixed by the support plate 301, and the electric push rod 302 is started to enable the cover plate 304 to move left and right on the top of the ventilation plate 305 through the push bar 303. When the fan 103 is working, the position of the cover plate 304 is moved by the electric push rod 302 to align it with the ventilation plate 305, so that the first exhaust port and the second exhaust port are in the same position, which is convenient for air circulation and enhances the cooling ability of the fan 103. When the machine is idle, the cover plate 304 is moved by the electric push rod 302, so that the first exhaust port of the cover plate 304 and the second exhaust port of the ventilation plate 305 are staggered, so that external dust will not naturally fall on the fan 103, thereby reducing the number of cleaning times and reducing maintenance costs.

[0035] During use, when the electronic device is started, the temperature sensor 106 and the load sensor 107 begin to collect data in real time, and transmit the data to the microprocessor 105 through the SPI or I2C interface. After receiving the data, the microprocessor 105 calculates the appropriate fan speed instruction according to the preset adaptive PID algorithm, and outputs it to the DC motor 104 through the PWM signal. After receiving the PWM signal, the DC motor 104 adjusts the supply voltage, thereby changing the speed of the fan 103 to achieve precise temperature control. The fan frame 202 is fixed in mid-air by tightening the cross bolts 203 inside the fan frame 202 using the threaded holes inside the multiple fixing blocks 201, and the fan frame 202 is fixed in mid-air by the connecting plate 204 inside the fan frame 202, so that the fan 103 will not move when it rotates, and the screen 205 on the top of the connecting plate 204 is used to prevent the fan 103 from driving dust to adhere to the fan 103 during operation, thereby reducing the cooling efficiency of the fan 103 and the cost of repeated cleaning. The spring 206 on the top of the connecting plate 204 is connected to the screen 205, and the vibration generated by the operation of the fan 103 is shared by the spring 206 to the screen 205, which can shake the dust on the screen 205 to one side while absorbing the vibration, so as to facilitate subsequent disassembly and cleaning. The electric push rod 302 is fixed by the support plate 301, and the electric push rod 302 is started to enable the cover plate 304 to move left and right on the top of the ventilation plate 305 through the push strip 303. When the fan 103 is working, the position of the cover plate 304 is moved by the electric push rod 302 to align it with the ventilation plate 305, so that the first air outlet and the second air outlet are in the same position, which is convenient for air circulation and enhances the cooling ability of the fan 103. When the machine is idle, the cover plate 304 is moved by the electric push rod 302, so that the first air outlet of the cover plate 304 and the second air outlet of the ventilation plate 305 are staggered, so that external dust will not naturally fall on the fan 103, thereby reducing the number of cleaning times and reducing maintenance costs.

[0036] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and alterations may be made to the embodiments without departing from the principles and spirit thereof, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A cooling fan control device, comprising a control mechanism (1), characterized in that: A disassembly mechanism (2) is provided at the bottom of the control mechanism (1), and a ventilation mechanism (3) is provided at the top of the control mechanism (1); The control mechanism (1) comprises a bottom plate (101), a top plate (102) is arranged on the top of the bottom plate (101), a fan (103) is arranged on the top of the bottom plate (101), a DC motor (104) is fixedly connected to the bottom of the fan (103), a microprocessor (105) is arranged at the bottom of the fan (103), and the microprocessor (105) is installed on the bottom plate (101); The disassembly mechanism (2) comprises a fixing block (201), a cross bolt (203) is arranged on the top of the fixing block (201), a fan frame (202) is arranged on the top of the fixing block (201), a connecting plate (204) is fixedly connected inside the fan frame (202), and a screen (205) is arranged on the top of the connecting plate (204).

2. A cooling fan control device according to claim 1, characterized in that: A temperature sensor (106) is installed on the top of the bottom plate (101), and a load sensor (107) is installed on the top of the bottom plate (101).

3. A cooling fan control device according to claim 1, characterized in that: A plurality of the fixing blocks (201) are provided, and the plurality of the fixing blocks (201) are arranged in a rectangular array, and the bottoms of the plurality of the fixing blocks (201) are fixedly connected to the same bottom plate (101).

4. A cooling fan control device according to claim 3, characterized in that: The interiors of the plurality of fixing blocks (201) are all provided with threaded holes, the plurality of threaded holes are all compatible with the cross bolts (203), and the bottoms of the plurality of cross bolts (203) are all movable and penetrate the interior of the same fan frame (202) and extend to the bottom thereof.

5. A cooling fan control device according to claim 1, characterized in that: Two connecting plates (204) are provided, and mounting grooves are provided inside the two connecting plates (204). Fans (103) are installed inside the two mounting grooves. A spring (206) is fixedly connected to the top of the connecting plate (204), and the top of the spring (206) is fixedly connected to the screen (205).

6. A cooling fan control device according to claim 1, characterized in that: The ventilation mechanism (3) comprises a support plate (301), the bottom of the support plate (301) is fixedly connected to the top plate (102), the right side of the support plate (301) is fixedly connected to an electric push rod (302), the output end of the electric push rod (302) is fixedly connected to a push bar (303), and the bottom of the push bar (303) is fixedly connected to a cover plate (304).

7. A cooling fan control device according to claim 6, characterized in that: A vent is provided inside the top plate (102), a vent plate (305) is installed inside the vent, and the top of the vent plate (305) is in contact with the cover plate (304).

8. A cooling fan control device according to claim 7, characterized in that: A plurality of first air outlets are provided inside the cover plate (304), a plurality of second air outlets are provided inside the ventilation plate (305), and the plurality of first air outlets are all compatible with the second air outlets.

9. The cooling fan control device according to claim 6, characterized in that: A plurality of the electric push rods (302) are provided, and the left sides of the plurality of electric push rods (302) are fixedly connected to the same support plate (301).

Images