Cooling fan automatic control circuit for domestic Feiteng CPU
By designing an automatic control circuit for the cooling fan of the domestic Feiteng CPU and using a temperature sensor and a fan speed control communication support module, the cooling and silent effects of the domestic Feiteng CPU are achieved, thereby improving the user experience.
Patent Information
- Application Number
- CN202422995813.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-05
- Publication Date
- 2025-10-14
- Estimated Expiration
- 2034-12-05
AI Technical Summary
The domestic Feiteng CPU lacks a cooling fan control function module and a temperature sensor interface, which makes it difficult to strike a balance between cooling and quiet effects, affecting the user experience.
A cooling fan automatic control circuit is designed, including a cooling fan speed control main control circuit and a cooling fan drive circuit. By using a temperature sensor and a fan speed control communication support module, through components such as the main control chip U47 and field-effect transistors, real-time CPU temperature monitoring and fan speed adjustment can be achieved.
It achieves a good silent effect while giving priority to ensuring heat dissipation, thus improving the user experience.
Smart Images
Figure CN223434507U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of circuits, in particular to an automatic control circuit for a heat dissipation fan of a domestic Feiteng CPU. Background Art
[0002] The CPU, or Central Processing Unit (CPU), is one of the main components of a computer and a core component, typically located on the motherboard. Its primary function is to interpret computer instructions and process data from software. The CPU is the core component responsible for reading, decoding, and executing instructions. The CPU generates significant heat during operation. To maintain stable CPU operation, a cooling fan is typically installed on the motherboard. The CPU can adjust the fan's speed based on its own temperature, ensuring a stable operating temperature while maintaining a relatively quiet operation. Current mainstream CPUs are generally Intel or AMD. Intel CPUs have a built-in cooling fan control module and a PECI temperature sensor interface, which can detect the CPU's temperature and adjust the fan's speed. AMD CPUs have a built-in cooling fan control module and an SB-TSI temperature sensor interface, which can detect the CPU's temperature and adjust the fan's speed.
[0003] At present, with the rapid development of domestically produced CPUs, many domestically produced CPUs have also been widely used due to their cost-effectiveness, such as the domestic Feiteng CPU. However, domestic CPUs all have a disadvantage, that is, there is no dedicated functional module for controlling the cooling fan inside, nor is there a temperature sensor interface for adjusting the operating speed of the cooling fan. As a result, it is difficult to achieve a good balance between the heat dissipation effect and the quiet effect of the domestic CPU. To maintain a high heat dissipation effect, the high-speed rotating cooling fan will bring higher noise, and it is impossible to accurately know whether the temperature of the CPU has dropped to the desired temperature range; if you want to maintain a good quiet effect, then the heat dissipation effect is difficult to guarantee, which brings a very bad user experience. Utility Model Content
[0004] In order to solve the problems in the prior art, the utility model provides an automatic control circuit for a cooling fan of a domestically produced Feiteng CPU. By setting a cooling fan speed regulating main control circuit and a cooling fan driving circuit that cooperate with each other, it is possible to achieve both a good cooling effect and a good silent effect while giving priority to ensuring the cooling effect, thereby greatly improving the user experience and solving the problem in the prior art that it is difficult to strike a balance between the cooling effect and the silent effect of the domestically produced Feiteng CPU.
[0005] The utility model provides a cooling fan automatic control circuit for a domestic Feiteng CPU, which is arranged on a mainboard and cooperates with the domestic Feiteng CPU on the mainboard, and includes a cooling fan speed regulation main control circuit and a cooling fan drive circuit. The domestic Feiteng CPU is provided with a temperature sensor and a fan speed regulation communication support module. The input end of the cooling fan speed regulation main control circuit is connected to the temperature sensor, and the cooling fan speed regulation main control circuit is also communicatively connected to the fan speed regulation communication support module. The output end of the cooling fan speed regulation main control circuit is connected to the input end of the cooling fan drive circuit, and the output end of the cooling fan drive circuit is connected to the CPU cooling fan. The cooling fan speed regulation main control circuit can control the cooling fan drive circuit to adjust the speed of the CPU cooling fan according to the domestic Feiteng CPU temperature information fed back by the temperature sensor and the temperature control curve information provided by the fan speed regulation communication support module.
[0006] The present utility model is further improved. The cooling fan speed regulation main control circuit is provided with a main control chip U47, a resistor R279 and a capacitor C137, wherein the main control chip U47 is provided with 48 pins, the 1st and 48th pins of the main control chip U47 are connected to a 3.3V voltage source, the 7th pin of the main control chip U47 is connected to one end of the resistor R279 and one end of the capacitor C137, the other end of the resistor R279 is connected to a 3.3V voltage source, the other end of the capacitor C137 is grounded, the 35th and 36th pins of the main control chip U47 are connected to the output end of the temperature sensor, the 45th and 46th pins of the main control chip U47 are communicatively connected to the fan speed regulation communication support module, and the 28th and 29th pins of the main control chip U47 are connected to the input end of the cooling fan drive circuit.
[0007] The present utility model is further improved. The cooling fan drive circuit is provided with a field effect transistor Q1, a field effect transistor Q2, a resistor R4, a fuse resistor FB1 and a CPU cooling fan interface J1, wherein the CPU cooling fan interface J1 is provided with 7 pins, the source of the field effect transistor Q1 is connected to the 29th pin of the main control chip U47, the source of the field effect transistor Q2 is connected to the 28th pin of the main control chip U47, the gate of the field effect transistor Q1 and the gate of the field effect transistor Q2 are connected to a 3.3V voltage source, the drain of the field effect transistor Q1 is connected to one end of the resistor R4, the other end of the resistor R4 is connected to the 4th pin of the CPU cooling fan interface J1, the drain of the field effect transistor Q2 is connected to one end of the fuse resistor FB1, and the other end of the fuse resistor FB1 is connected to the 3rd pin of the CPU cooling fan interface J1.
[0008] The utility model is further improved. A diode D1 and a resistor R5 are further provided in the cooling fan drive circuit. The positive electrode of the diode D1 is connected to the other end of the resistor R4 and the 4th pin of the CPU cooling fan interface J1. One end of the resistor R5 is connected to the drain of the field effect tube Q1 and one end of the resistor R4. The negative electrode of the diode D1 and the other end of the resistor R5 are connected to a 5V voltage source.
[0009] The utility model is further improved. A diode D2, a capacitor C2 and a resistor R6 are further provided in the cooling fan drive circuit. The positive electrode of the diode D2 is connected to one end of the capacitor C2, one end of the resistor R6, the drain of the field effect transistor Q2, and one end of the fuse resistor FB1. The negative electrode of the diode D2 and the other end of the resistor R6 are connected to a 5V voltage source, and the other end of the capacitor C2 is grounded.
[0010] The utility model is further improved. The cooling fan drive circuit is further provided with a capacitor C1 and a capacitor C3. One end of the capacitor C1 is connected to one end of the capacitor C3, the second pin of the CPU cooling fan interface J1, and a 5V voltage source. The other end of the capacitor C1 and the other end of the capacitor C3 are grounded.
[0011] The present invention is further improved, and the model of the main control chip U47 is GD32E235.
[0012] Compared with the existing technology, the beneficial effect of the utility model is: it provides an automatic control circuit for the cooling fan of the domestic Feiteng CPU, by setting a cooling fan speed regulation main control circuit and a cooling fan driving circuit that cooperate with each other, the cooling fan speed regulation main control circuit can control the cooling fan driving circuit to adjust the speed of the CPU cooling fan according to the domestic Feiteng CPU temperature information fed back by the temperature sensor and the temperature control curve information provided by the fan speed regulation communication support module, and can obtain the CPU temperature in real time and adjust the operating speed of the cooling fan according to the CPU temperature, which can not only obtain a good heat dissipation effect, but also maintain a good silent effect under the premise of giving priority to ensuring the heat dissipation effect, greatly improving the user experience, and solving the problem that the existing technology of the domestic Feiteng CPU is difficult to balance the heat dissipation effect and the silent effect. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] In order to more clearly illustrate the solutions in the present application or the prior art, a brief introduction will be given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.
[0014] Figure 1 This is a functional block diagram of an automatic control circuit for a cooling fan of a domestic Feiteng CPU.
[0015] Figure 2 This is a circuit diagram of the main speed control circuit of the cooling fan of the present utility model;
[0016] Figure 3 This is a circuit diagram of the heat dissipation fan driving circuit of the present invention. DETAILED DESCRIPTION
[0017] Unless otherwise defined, all technical and scientific terms used herein have the same meanings as commonly understood by those skilled in the art to which this application belongs. The terms used in the specification of the application are only for the purpose of describing specific embodiments and are not intended to limit this application. The terms "including" and "having" and any variations thereof in the specification and claims of this application and the above-mentioned drawings are intended to cover non-exclusive inclusions. The terms "first", "second", etc. in the specification and claims of this application or the above-mentioned drawings are used to distinguish different objects, not to describe a specific order.
[0018] References herein to "embodiments" mean that a particular feature, structure, or characteristic described in connection with the embodiments may be included in at least one embodiment of the present application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor does it constitute an independent or alternative embodiment that is mutually exclusive of other embodiments. It is understood, both explicitly and implicitly, by those skilled in the art that the embodiments described herein may be combined with other embodiments.
[0019] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the accompanying drawings.
[0020] like Figure 1-Figure 3 As shown, the utility model provides a cooling fan automatic control circuit for a domestic Feiteng CPU, which is arranged on a mainboard and cooperates with the domestic Feiteng CPU on the mainboard, including a cooling fan speed regulation main control circuit and a cooling fan drive circuit. A temperature sensor and a fan speed regulation communication support module are provided in the domestic Feiteng CPU. The input end of the cooling fan speed regulation main control circuit is connected to the temperature sensor, and the cooling fan speed regulation main control circuit is also communicatively connected to the fan speed regulation communication support module. The output end of the cooling fan speed regulation main control circuit is connected to the input end of the cooling fan drive circuit, and the output end of the cooling fan drive circuit is connected to the CPU cooling fan. In this embodiment, the cooling fan speed regulation main control circuit can control the cooling fan drive circuit to adjust the speed of the CPU cooling fan according to the domestic Feiteng CPU temperature information fed back by the temperature sensor and the temperature control curve information provided by the fan speed regulation communication support module. It can obtain the CPU temperature in real time and adjust the operating speed of the cooling fan according to the CPU temperature. It can not only obtain a good cooling effect, but also maintain a good silent effect while giving priority to ensuring the cooling effect, greatly improving the user experience. Among them, the fan speed regulation communication support module can transmit the temperature control curve information of the domestic Feiteng CPU temperature and the CPU cooling fan speed to the cooling fan speed regulation main control circuit. The temperature sensor transmits the temperature information to the cooling fan speed regulation main control circuit in real time through the TS interface of the domestic Feiteng CPU.
[0021] like Figure 2As shown, the cooling fan speed control main control circuit is provided with a main control chip U47, a resistor R279 and a capacitor C137, wherein the model of the main control chip U47 is GD32E235, and the main control chip U47 is provided with 48 pins, the 1st and 48th pins of the main control chip U47 are connected to a 3.3V voltage source, the 7th pin of the main control chip U47 is connected to one end of the resistor R279 and one end of the capacitor C137, the other end of the resistor R279 is connected to a 3.3V voltage source, the other end of the capacitor C137 is grounded, the 35th and 36th pins of the main control chip U47 are connected to the output end of the temperature sensor, the 45th and 46th pins of the main control chip U47 are communicated with the fan speed control communication support module, and the 28th and 29th pins of the main control chip U47 are connected to the input end of the cooling fan drive circuit. In this embodiment, the cooling fan speed regulation main control circuit is used to control the cooling fan drive circuit to adjust the speed of the CPU cooling fan based on the domestic Feiteng CPU temperature information fed back by the temperature sensor and the temperature control curve information provided by the fan speed regulation communication support module. On the premise of not exceeding the set temperature, priority is given to ensuring that the heat dissipation achieves the effect of no temperature rise. On this basis, the fan speed is adjusted to achieve a better silent effect, thereby improving the user experience.
[0022] like Figure 3As shown, the cooling fan driving circuit is provided with a field effect transistor Q1, a field effect transistor Q2, a resistor R4, a fuse resistor FB1 and a CPU cooling fan interface J1, wherein the CPU cooling fan interface J1 has 7 pins, the source of the field effect transistor Q1 is connected to the 29th pin of the main control chip U47, the source of the field effect transistor Q2 is connected to the 28th pin of the main control chip U47, the gate of the field effect transistor Q1 and the gate of the field effect transistor Q2 are connected to a 3.3V voltage source, the drain of the field effect transistor Q1 is connected to one end of the resistor R4, the other end of the resistor R4 is connected to the 4th pin of the CPU cooling fan interface J1, the drain of the field effect transistor Q2 is connected to one end of the fuse resistor FB1, and the other end of the fuse resistor FB1 is connected to the 3rd pin of the CPU cooling fan interface J1; the cooling fan driving circuit is also provided with a diode D1 and a resistor R5, The positive electrode of diode D1 is connected to the other end of resistor R4 and pin 4 of CPU cooling fan interface J1. One end of resistor R5 is connected to the drain of field-effect transistor Q1 and one end of resistor R4. The cathode of diode D1 and the other end of resistor R5 are connected to a 5V voltage source. The cooling fan drive circuit also includes a diode D2, a capacitor C2, and a resistor R6. The positive electrode of diode D2 is connected to one end of capacitor C2, one end of resistor R6, the drain of field-effect transistor Q2, and one end of fuse resistor FB1. The cathode of diode D2 and the other end of resistor R6 are connected to a 5V voltage source, and the other end of capacitor C2 is grounded. The cooling fan drive circuit also includes capacitors C1 and C3. One end of capacitor C1 is connected to one end of capacitor C3, pin 2 of CPU cooling fan interface J1, and a 5V voltage source. The other ends of capacitors C1 and C3 are grounded. In this embodiment, the cooling fan drive circuit is used to drive the CPU cooling fan and simultaneously feed back the CPU cooling fan's speed to the cooling fan speed control circuit.
[0023] From the above, it can be seen that the utility model provides an automatic control circuit for a cooling fan of a domestic Feiteng CPU. By setting a cooling fan speed regulation main control circuit and a cooling fan driving circuit that cooperate with each other, the cooling fan speed regulation main control circuit can control the cooling fan driving circuit to adjust the rotation speed of the CPU cooling fan according to the domestic Feiteng CPU temperature information fed back by the temperature sensor and the temperature control curve information provided by the fan speed regulation communication support module. It can obtain the temperature of the CPU in real time and adjust the operating speed of the cooling fan according to the temperature of the CPU. It can not only obtain a good heat dissipation effect, but also maintain a good silent effect under the premise of giving priority to ensuring the heat dissipation effect, greatly improving the user experience, and solving the problem that it is difficult to take into account both the heat dissipation effect and the silent effect of the domestic Feiteng CPU in the existing technology.
[0024] The specific implementation methods described above are preferred implementation methods of the present invention, and are not intended to limit the specific implementation scope of the present invention. The scope of the present invention includes but is not limited to the specific implementation methods. All equivalent changes made in accordance with the present invention are within the protection scope of the present invention.
Claims
1. A cooling fan automatic control circuit for a domestic Feiteng CPU, provided on a motherboard and coordinated with the domestic Feiteng CPU on the motherboard, characterized in that: It includes a cooling fan speed regulation main control circuit and a cooling fan drive circuit. A temperature sensor and a fan speed regulation communication support module are provided in the domestic Feiteng CPU. The input end of the cooling fan speed regulation main control circuit is connected to the temperature sensor. The cooling fan speed regulation main control circuit is also communicated with the fan speed regulation communication support module. The output end of the cooling fan speed regulation main control circuit is connected to the input end of the cooling fan drive circuit. The output end of the cooling fan drive circuit is connected to the CPU cooling fan. The cooling fan speed regulation main control circuit can control the cooling fan drive circuit to adjust the speed of the CPU cooling fan according to the domestic Feiteng CPU temperature information fed back by the temperature sensor and the temperature control curve information provided by the fan speed regulation communication support module.
2. The cooling fan automatic control circuit for a domestic Feiteng CPU according to claim 1 is characterized in that: The cooling fan speed regulation main control circuit is provided with a main control chip U47, a resistor R279 and a capacitor C137, wherein the main control chip U47 is provided with 48 pins, the 1st and 48th pins of the main control chip U47 are connected to a 3.3V voltage source, the 7th pin of the main control chip U47 is connected to one end of the resistor R279 and one end of the capacitor C137, the other end of the resistor R279 is connected to a 3.3V voltage source, the other end of the capacitor C137 is grounded, the 35th and 36th pins of the main control chip U47 are connected to the output end of the temperature sensor, the 45th and 46th pins of the main control chip U47 are communicatively connected to the fan speed regulation communication support module, and the 28th and 29th pins of the main control chip U47 are connected to the input end of the cooling fan drive circuit.
3. The cooling fan automatic control circuit for a domestic Feiteng CPU according to claim 2 is characterized in that: The cooling fan drive circuit is provided with a field effect transistor Q1, a field effect transistor Q2, a resistor R4, a fuse resistor FB1 and a CPU cooling fan interface J1, wherein the CPU cooling fan interface J1 is provided with 7 pins, the source of the field effect transistor Q1 is connected to the 29th pin of the main control chip U47, the source of the field effect transistor Q2 is connected to the 28th pin of the main control chip U47, the gate of the field effect transistor Q1 and the gate of the field effect transistor Q2 are connected to a 3.3V voltage source, the drain of the field effect transistor Q1 is connected to one end of the resistor R4, the other end of the resistor R4 is connected to the 4th pin of the CPU cooling fan interface J1, the drain of the field effect transistor Q2 is connected to one end of the fuse resistor FB1, and the other end of the fuse resistor FB1 is connected to the 3rd pin of the CPU cooling fan interface J1.
4. The cooling fan automatic control circuit for a domestic Feiteng CPU according to claim 3 is characterized in that: The cooling fan drive circuit is also provided with a diode D1 and a resistor R5. The positive electrode of the diode D1 is connected to the other end of the resistor R4 and the 4th pin of the CPU cooling fan interface J1. One end of the resistor R5 is connected to the drain of the field effect transistor Q1 and one end of the resistor R4. The negative electrode of the diode D1 and the other end of the resistor R5 are connected to a 5V voltage source.
5. The cooling fan automatic control circuit for a domestic Feiteng CPU according to claim 4 is characterized in that: The cooling fan drive circuit is also provided with a diode D2, a capacitor C2 and a resistor R6. The positive electrode of the diode D2 is connected to one end of the capacitor C2, one end of the resistor R6, the drain of the field effect transistor Q2, and one end of the fuse resistor FB1. The negative electrode of the diode D2 and the other end of the resistor R6 are connected to a 5V voltage source, and the other end of the capacitor C2 is grounded.
6. The cooling fan automatic control circuit for a domestic Feiteng CPU according to claim 5 is characterized in that: The cooling fan drive circuit is further provided with a capacitor C1 and a capacitor C3. One end of the capacitor C1 is connected to one end of the capacitor C3, the second pin of the CPU cooling fan interface J1, and a 5V voltage source, and the other end of the capacitor C1 and the other end of the capacitor C3 are grounded.
7. The cooling fan automatic control circuit for a domestic Feiteng CPU according to claim 6, characterized in that: The model of the main control chip U47 is GD32E235.