CN201000601Y - radiator control - Google Patents

Abstract

The utility model relates to a radiator control device, which integrates manual voltage adjustment and the existing PWM signal control mode to control the action of a radiator. The heat sink control device comprises a voltage stabilizer, a voltage regulator and a switching unit, wherein the voltage stabilizer is electrically connected with a central processing unit of the computer mainboard and is used for receiving a PWM signal and outputting a power supply signal with stable voltage. The voltage regulator is electrically connected with the voltage stabilizer and is used for regulating the voltage of the power supply signal with the stable voltage. The switching unit is electrically connected to the voltage stabilizer, the voltage regulator and the heat sink and is used for switching a first control mode and a second control mode, wherein the first control mode controls the heat sink by a power signal with a stable voltage, and the second control mode controls the heat sink by a power signal with an adjustable stable voltage.

Description

radiator control

technical field

The utility model relates to a radiator control device, especially a heat dissipation control device which integrates a PWM signal output by a central processing unit and a manual voltage adjustment method to control the action of a radiator.

Background technique

With the continuous advancement of semiconductor technology, the volume of integrated circuits (Integrated Circuit; IC) has become smaller and its operation speed has increased. Generally speaking, when the circuit is operating, the temperature of the electronic components in it will rise, especially when the operation speed of the IC components is higher, the heat generation becomes more serious.

The main heat source in the computer case comes from the central processing unit (CPU). The central processing unit is the soul of the microcomputer. The data it processes is the largest, the calculation speed is the fastest, and the heat generation is the most serious. Therefore, it is necessary to detect the temperature of the central processing unit in the computer case, so that when the temperature in the case is too high, it can be processed in real time.

In general computer cases, there are simple heat dissipation fans for heat dissipation. In this design, the heat dissipation fans will start as soon as the computer is turned on. When the computer system enters the power-saving mode, the design of the aforementioned cooling fan will still operate with the maximum cooling power, so this design consumes a lot of energy and does not meet the needs of the trend of the times.

In view of the shortcomings of the above-mentioned cooling fan design, the mainboard produced by Intel can output a corresponding PWM signal according to the actual temperature of the CPU, and control the fan speed by means of the PWM signal, so that the actual temperature of the CPU can be controlled. be effectively controlled. The aforementioned control method is based on the feedback temperature value to achieve the adjustment of the rotation speed. However, the temperature value is a fluctuating analog value, so there is a slight error between the detected temperature value and the actual temperature. The PWM signal generated relative to the detected temperature value will cause a control delay phenomenon due to the aforementioned error.

Contents of the invention

In view of this, the utility model provides a radiator control device, which integrates manual voltage adjustment and existing PWM signal control to solve the disadvantage of slow fine-tuning of the PWM signal generated by the existing CPU.

The radiator control device of the utility model captures a PWM signal output by a central processing unit on a computer motherboard and controls a radiator. In the first embodiment of the present invention, the radiator control device includes a voltage stabilizer, a voltage regulator and a switching unit.

Wherein, the voltage stabilizer is electrically connected to the central processing unit of the computer motherboard, receives the PWM signal, and outputs a power signal with a stable voltage. The voltage regulator is electrically connected to the voltage stabilizer and is used to adjust the voltage of the power signal with stable voltage. The switch unit is electrically connected to the voltage stabilizer, the voltage regulator and the radiator, and is used as a switch between a first control mode and a second control mode, wherein the first control mode is The heat sink is controlled by a power signal with a stable voltage, and the second control mode is controlled by a power signal with an adjustable stable voltage.

In the second embodiment of the present invention, the radiator control device includes a switching unit, a voltage regulator and a voltage stabilizer. Wherein, the switching unit is electrically connected to the central processing unit of the computer motherboard. The voltage regulator is electrically connected to the switching unit and outputs an adjustable output voltage. The voltage regulator is electrically connected between the switching unit and the heat sink, receives the PWM signal through the switching unit, and outputs a power signal with a stable voltage to the heat sink or through the heat sink The switching unit receives the adjustable output voltage, and outputs the stable adjustable output voltage to the radiator. In this way, the switching unit is used as a switch between a first control mode and a second control mode, the first control mode is to control the radiator with a power signal with a stable voltage, and the second control mode is to control the radiator. The control mode is to control the radiator with an adjustable output voltage.

In order to further understand the features and technical contents of the present utility model, please refer to the following detailed description and accompanying drawings of the present utility model.

Description of drawings

FIG. 1 is a schematic block diagram of a circuit of a radiator control device according to a first embodiment of the present invention;

FIG. 2 is a circuit block diagram of a radiator control device according to a second embodiment of the present invention.

Explanation of reference numerals: 1 - central processing unit; 2, 4 - radiator control device; 20, 40 - voltage regulator; 22, 42 - voltage regulator; 24, 44 - switching unit; 26, 46 - action indicating unit ; 3-radiator; S1-PWM signal; S2-power signal; Vm-adjustable output voltage.

Detailed ways

Please refer to FIG. 1 , which is a circuit block diagram of a radiator control device according to a first embodiment of the present invention. The radiator control device 2 of the present utility model captures the PWM signal S1 output by the CPU 1 on the motherboard (not shown) in the computer case, and controls the action of a radiator 3 . The radiator control device 2 includes a voltage regulator 20 , a voltage regulator 22 and a switching unit 24 .

The voltage regulator 20 is electrically connected to the CPU 1 on the motherboard of the computer, receives the PWM signal S1, and outputs a power signal S2 with a stable voltage. The voltage regulator 22 is used to adjust the voltage of the power signal S2 with a stable voltage. The switch unit 24 is electrically connected to the voltage stabilizer 20, the voltage regulator 22 and the radiator 3, and is used as a switch between a first control mode and a second control mode, wherein the first control mode A control mode is to control the radiator 3 with a power signal S2 with a stable voltage, and the second control mode is to control the radiator 3 with a power signal S2 with an adjustable and stable voltage.

The duty cycle of the PWM signal S1 output by the CPU 1 will change with the actual temperature of the CPU 1 . When the switching unit 24 is switched so that the radiator control device 2 is in the first control mode, the power signal S2 with a stable voltage output after being stabilized by the voltage regulator 20 will be sent to the radiator 3 through the switching unit 24 , and at this time, the action of the radiator 3 is controlled by the modulation of the duty cycle of the power signal S2 with a stable voltage. In addition, when the switching unit 24 is switched so that the radiator control device 2 is in the second control mode, the voltage regulator 22 is electrically connected to the voltage regulator 20 through the switching unit 24 to adjust the The voltage of the stable voltage power signal S2. At this time, the action of the radiator 3 is controlled by the modulation and voltage of the duty cycle of the power signal S2 with a stable voltage.

The switching unit 24 is further electrically connected to an action indication unit 26, and the action indication unit 26 is implemented by a light emitting diode, in the first embodiment, a red light emitting diode (not marked) and a green light emitting diode (not marked) implement. When the radiator control device 2 is in the first control mode, the red light-emitting diode will light up, and the radiator 3 is only controlled by the duty cycle modulation of the power signal S2 with a stable voltage.

And when the switching unit 24 is manually switched to make the radiator control device 2 in the second control mode, the user can adjust the voltage of the power signal S2 with a stable voltage by means of the manual voltage regulator 22 to control the radiator. 3, at the same time, the brightness of the green LED will change with the voltage of the power signal S2. For example, if the radiator is a fan, the higher the voltage of the power signal S2, the higher the fan speed, and the brightness of the green LED will be higher. brighter.

In the first embodiment, when the user finds that the applied device is overheated, he can directly manually adjust the voltage regulator 22 to speed up the action of the heat sink 3, and then adjust the heat sink 3 to a better action through the PWM control function state.

Similarly, if the user feels that the action of the radiator 3 does not need to be so fast, he can directly manually adjust the voltage regulator 22 to slow down the action of the radiator 3, and then adjust the radiator 3 to a better operating state through the PWM control function.

In this way, the radiator control device provided by the utility model can make up for the existing shortcoming of slow fine-tuning of the radiator 3 that only uses PWM signals to control the radiator 3, and allows the user to manually adjust a better action mode, so that the system is in good condition. in better condition.

The aforementioned radiator 3 is a cooling fan. The cooling fan can be a CPU fan, a case fan, a power supply fan, a display card fan or a motherboard fan. In this way, when a plurality of aforementioned cooling fans (CPU fan, case fan, power supply fan, display card fan and motherboard fan, etc.) In the modulation of the duty cycle of the power signal S2 with a stable voltage or at the same time controlled by the modulation of the duty cycle of the power signal S2 and the magnitude of the voltage, the speed of the rotation speed of the central processing unit 1 is changed according to the actual temperature of the CPU 1. slow, which in turn regulates the overall temperature in the computer case. The aforementioned radiator 3 can also be a PWM-controlled water cooling pump (CoolerPump), which can also be controlled by the power signal S2 and the voltage to adjust the temperature in the computer case.

Please refer to FIG. 2 , which is a circuit block diagram of a radiator control device according to a second embodiment of the present invention. The radiator control device 4 of the present utility model captures the PWM signal S1 output by the CPU 1 on the motherboard (not shown) in the computer case, and controls a radiator 3 to act. The radiator control device 4 includes a voltage regulator 40 , a voltage regulator 42 and a switching unit 44 .

The switching unit 44 is electrically connected to the CPU 1 on the motherboard of the computer. The voltage regulator 42 is electrically connected to the switching unit 44 and outputs an adjustable output voltage Vm. The regulator 40 is electrically connected to the switching unit 44 and the radiator 3, receives the PWM signal S1 through the switching unit 44, and outputs a power signal S2 with a stable voltage to the The heat sink 3, or receive the adjustable output voltage Vm through the switching unit 44, and output the stable adjustable output voltage Vm to the heat sink 3. In this way, the switching unit 44 is used as a switch between a first control mode and a second control mode, the first control mode is to control the radiator 3 with the power signal S2 having a stable voltage, the The second control mode is to control the radiator 3 with an adjustable output voltage Vm.

The duty cycle of the PWM signal S1 output by the CPU 1 will change with the actual temperature of the CPU 1 . When the switching unit 44 is switched so that the radiator control device 4 is in the first control mode, the power signal S2 with a stable voltage output after being stabilized by the voltage regulator 40 will be sent to the radiator 3, and at this time , the action of the radiator 3 is controlled by the modulation of the duty cycle of the power signal S2 with a stable voltage. In addition, when the switching unit 44 is switched so that the radiator control device 4 is in the second control mode, the voltage regulator 42 is electrically connected to the voltage regulator 40 through the switching unit 44, and transmits the adjustable output voltage Vm to The voltage regulator 40 further controls the radiator 3 . At this time, the action of the radiator 3 is controlled at the stable adjustable output voltage Vm.

The switching unit 44 is further electrically connected to an action indication unit 46, and the action indication unit is implemented by a light-emitting diode, and in the second embodiment is implemented by a red light-emitting diode (not marked) and a green light-emitting diode (not marked). . When the radiator control device 4 is in the first control mode, the red light-emitting diode will light up, and the radiator 3 is only controlled by the duty cycle modulation of the power signal S2 with a stable voltage.

And when the switching unit 44 is manually switched, so that the radiator control device 4 is in the second control mode, the user can adjust the voltage of the stable adjustable output voltage Vm by means of the manual voltage regulator 42, so as to Control the action of the radiator 3. At the same time, the brightness of the green LED will change with the voltage of the power signal S2. For example, the radiator 3 is a fan. When the voltage of the power signal S2 is higher, the fan speed is higher, and the green LED is green The brightness of the LED is brighter.

In the second embodiment, when the user finds that the applied device is overheated, the user can select the second control mode, and directly manually adjust the voltage regulator 42 to allow the heat sink 3 to accelerate the cooling action. Conversely, if the user feels that the cooling action of the radiator 3 does not need to be so fast, he can directly manually adjust the voltage regulator 42 to slow down the cooling action of the radiator 3 . Afterwards, the user can also select the first control mode, and adjust the radiator 3 to a better operating state through the PWM control function.

In this way, the radiator control device provided by the utility model can make up for the existing shortcoming of slow fine-tuning of the radiator 3 that only uses PWM signals to control the radiator 3, and allows the user to manually adjust a better action mode, so that the system is in good condition. in better condition.

Referring again to FIG. 2 , the aforementioned radiator 3 is a cooling fan. The cooling fan can be a CPU fan, a case fan, a power supply fan, a display card fan or a motherboard fan. In this way, when a plurality of aforementioned cooling fans (CPU fan, case fan, power supply fan, display card fan and motherboard fan, etc.) The modulation or voltage magnitude of the adjustable output voltage Vm output by the voltage regulator 42 in the duty cycle of the power signal S2 with a stable voltage adjusts the overall temperature in the computer case. The aforementioned radiator 3 can also be a PWM-controlled water cooling pump (Cooler Pump), which can also be controlled by the power signal S2 or the voltage to adjust the temperature in the computer case.

In summary, the utility model provides a radiator control device including a voltage stabilizer, a voltage regulator and a switching unit, which integrates manual voltage adjustment and existing PWM signal control to control a radiator action to solve the PWM signal generated by the existing central processing unit, which will cause control delay due to the aforementioned error.

The above description is only illustrative, rather than restrictive, of the present invention. Those of ordinary skill in the art understand that many modifications and changes can be made without departing from the spirit and scope defined by the following appended claims. Or equivalent, but all will fall within the protection domain of the present utility model.

Claims (12)

1. A radiator control device, which captures a PWM signal output by a central processing unit on a computer motherboard and controls a radiator, wherein the radiator control device includes: A voltage regulator, electrically connected to the computer motherboard, the voltage regulator receives the PWM signal and outputs a power signal with a stable voltage; a voltage regulator, electrically connected to the voltage regulator, and the voltage regulator is used to adjust the voltage of the power signal with stable voltage; and a switching unit electrically connected to the voltage stabilizer, the voltage regulator and the radiator respectively, the switching unit is used as a switch between a first control mode and a second control mode, The first control mode is to control the radiator with a power signal with a stable voltage, and the second control mode is to control the radiator with a power signal with an adjustable and stable voltage. 2. The radiator control device according to claim 1, further comprising an action indicating unit, said action indicating unit being electrically connected to said switching unit, providing said first control mode or said Indication of the second control mode described above. 3. The radiator control device according to claim 2, wherein the action indicating unit comprises a light emitting diode. 4. The radiator control device according to claim 1, wherein the radiator is a cooling fan. 5. The radiator control device according to claim 4, wherein the cooling fan is one of a CPU fan, a casing fan, a power supply fan, a display card fan or a motherboard fan one. 6. The radiator control device according to claim 1, wherein the radiator is a water cooling pump. 7. A radiator control device that captures a PWM signal output by a central processing unit on a computer motherboard and controls a radiator, wherein the radiator control device includes: A voltage regulator, outputting an adjustable output voltage; a switching unit electrically connected to the computer motherboard and the voltage regulator, the switching unit provides switching between a first control mode and a second control mode; and A voltage stabilizer, electrically connected between the switching unit and the radiator, used to provide a stable voltage for the signal output by the switching unit and output it to the radiator; Wherein, when the switching unit switches to the first control mode, the switching unit outputs the PWM signal to the voltage regulator; and when the switching unit switches to the In the second control mode, the switching unit outputs the adjustable output voltage to the regulator. 8. The radiator control device according to claim 7, further comprising an action indicating unit, said action indicating unit being electrically connected to said switching unit, providing said first control mode or said Indication of the second control mode described above. 9. The radiator control device according to claim 8, wherein the action indicating unit comprises a light emitting diode. 10. The radiator control device according to claim 7, wherein the radiator is a cooling fan. 11. The radiator control device according to claim 10, wherein the cooling fan is one of a CPU fan, a case fan, a power supply fan, a display card fan or a motherboard fan one. 12. The radiator control device according to claim 7, wherein the radiator is a water cooling pump.

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