Computer mainboard

Abstract

The utility model provides a computer mainboard which comprises a processor, a control unit, a level conversion unit and a switch unit, and the control unit is used for controlling a power supply of the computer mainboard. The processor is provided with an over-temperature alarm port, and when the over-temperature alarm port of the processor outputs an over-temperature alarm signal to the input end of the level conversion unit, the level conversion unit performs level conversion on the over-temperature alarm signal and outputs the over-temperature alarm signal subjected to level conversion to the control end of the switch unit; and when the control end of the switch unit receives the over-temperature alarm signal subjected to level conversion, the switch unit is started and outputs a reset signal to the reset end of the control unit, so that the control unit cuts off the power supply of a power supply of the computer mainboard to the computer mainboard. According to the utility model, the power supply of the computer mainboard can be cut off in time when the processor is over-temperature, and timely and effective over-temperature shutdown protection is provided for the processor and the computer mainboard.

Description

Technical Field

[0001] The utility model relates to the technical field of computers, in particular to a computer motherboard. Background Art

[0002] In this era of booming information technology, computers have been widely used in people's work and life and have become indispensable office and entertainment devices for people.

[0003] With the popularization of computers in people's work and life, the usage scenarios of computers are becoming more and more diverse, and they are often required to be applied in various harsh environments, such as high-temperature and high-humidity environments or high-acidity environments near the sea. Therefore, the protection of computer motherboards is also becoming more diverse, and temperature monitoring of the central processing unit on the computer motherboard is one of them.

[0004] The operating temperature of a computer directly affects its performance. During the operation of a computer, the temperature of the central processing unit (CPU) is affected by various factors, including the performance of the central processing unit itself, the operating intensity of the central processing unit, the performance of the computer radiator, the ambient temperature, etc. These factors may cause the temperature of the central processing unit to reach a very high level. For example, for a desktop computer, during its operation, the temperature of the central processing unit may reach above 100 degrees Celsius. Coupled with the continuous increase in the ambient temperature of the usage scenario, the temperature of the central processing unit itself will be even higher. If the central processing unit operates at a high temperature for a long time, its service life will be greatly reduced, and even the internal modules may be burned out, resulting in the damage of the entire central processing unit.

[0005] In the prior art, the external temperature information is often sensed by setting a thermal sensor around the central processing unit of the computer, and the internal temperature information of the central processing unit can also be obtained by directly reading the internal temperature of the central processing unit for temperature monitoring of the central processing unit. Based on this, the fan speed can be further adjusted to reduce the temperature of the central processing unit and its working environment. However, all such existing technologies need to monitor and judge the temperature of the central processing unit, either remind the user to perform subsequent processing, or the computer itself performs fan regulation. When the central processing unit is overheated, overheat protection cannot be provided in a timely manner, which may cause damage to the central processing unit and its internal modules. Summary of the Invention

[0006] The purpose of the utility model is to provide a computer motherboard, which can cut off the power supply of the computer motherboard in time when the processor is overheated, and provide timely and effective overheat shutdown protection for the processor and the computer motherboard.

[0007] To achieve the above object, the present utility model provides a computer motherboard, which includes a processor and a control unit. The control unit is used to control the power supply of the computer motherboard. The processor has an over-temperature alarm port. The computer motherboard further includes a level conversion unit and a switch unit. The over-temperature alarm port of the processor is connected to the input end of the level conversion unit. The output end of the level conversion unit is connected to the control end of the switch unit. The output end of the switch unit is connected to the reset end of the control unit. Wherein, when the over-temperature alarm port of the processor outputs an over-temperature alarm signal to the input end of the level conversion unit, the level conversion unit performs level conversion on the over-temperature alarm signal and outputs the level-converted over-temperature alarm signal to the control end of the switch unit through its output end. When the switch unit receives the level-converted over-temperature alarm signal at its control end, it is turned on and outputs a reset signal to the reset end of the control unit through its output end, so that the control unit cuts off the power supply to the computer motherboard.

[0008] Preferably, the switch unit includes an NMOS transistor. The gate of the NMOS transistor serves as the control end of the switch unit. The source of the NMOS transistor is grounded. The drain of the NMOS transistor serves as the output end of the switch unit.

[0009] Preferably, the switch unit further includes a first resistor and a second resistor. The gate of the NMOS transistor is connected to the output end of the level conversion unit through the first resistor. The second resistor is connected between the gate of the NMOS transistor and the ground.

[0010] Preferably, the switch unit further includes a third resistor. The third resistor is connected between the drain of the NMOS transistor and the ground.

[0011] Preferably, the level conversion unit performs level conversion on the over-temperature alarm signal, converting the level of the over-temperature alarm signal from 1.8V to 3.3V.

[0012] Preferably, the level conversion unit includes a level conversion chip, which includes a first port, a first power supply port, a second port, a second power supply port, an enable terminal, and a ground terminal. Among them, the first port serves as the input terminal of the level conversion unit; the first power supply port is the power supply port of the first port, connected to the P1V8SB power supply of the computer motherboard through a fourth resistor, connected to the P1V8 power supply of the computer motherboard through a fifth resistor, and grounded through a first capacitor; the second port serves as the output terminal of the level conversion unit; the second power supply port is the power supply port of the second port, connected to the P3V3SB power supply of the computer motherboard through a sixth resistor, connected to the P3V3 power supply of the computer motherboard through a seventh resistor, and grounded through a second capacitor; the enable terminal is connected to the P1V8 power supply of the computer motherboard through an eighth resistor, and is active high; the ground terminal is grounded.

[0013] Preferably, the control unit is an embedded controller.

[0014] Preferably, the processor is a Feiteng processor.

[0015] Preferably, the processor is a Feiteng D3000 processor.

[0016] The beneficial effects of the present invention: In the computer motherboard of the present invention, a level conversion unit and a switch unit are provided between the over-temperature alarm port of the processor and the reset terminal of the control unit for controlling the power supply of the computer motherboard. Once the processor generates an over-temperature alarm signal due to excessive temperature, the over-temperature alarm signal will be level-converted by the level conversion unit and then input into the switch unit to turn on the switch unit so that it outputs a reset signal to the control unit, causing the control unit to reset and thus cut off the power supply of the computer motherboard to the computer motherboard, realizing over-temperature shutdown of the processor. Therefore, the computer motherboard of the present invention can immediately cut off the power supply of the computer motherboard when the processor on it generates an over-temperature alarm signal, causing the computer motherboard to stop working, realizing over-temperature shutdown of the processor, thereby preventing the processor and its internal modules from being damaged by high temperature, providing timely and effective over-temperature shutdown protection for the processor and the computer motherboard, and prolonging the service life of the processor and the computer motherboard. Description of the Drawings

[0017] In order to further understand the features and technical content of the present invention, please refer to the following detailed description and drawings of the present invention. However, the drawings are only for reference and explanation, and are not used to limit the present invention. In the drawings,

[0018] Figure 1 is the circuit structure block diagram of the computer motherboard of the present invention.

[0019] Figure 2 The circuit wiring diagram of the level conversion unit of the computer motherboard according to an embodiment of the present utility model.

[0020] Figure 3 The circuit wiring diagram of the switch unit of the computer motherboard according to an embodiment of the present utility model. Detailed implementation manners

[0021] To further elaborate on the technical means and effects adopted by the present utility model, the following provides a detailed description in combination with the preferred embodiments of the present utility model and their accompanying drawings.

[0022] As Figure 1 shown, the present utility model provides a computer motherboard, including a processor 10, a control unit 20, a level conversion unit 30, and a switch unit 40. Among them, the control unit 20 is used to control the power supply of the computer motherboard. The processor 10 has an over-temperature alarm port. The over-temperature alarm port of the processor 10 is connected to the input end of the level conversion unit 30. The output end of the level conversion unit 30 is connected to the control end of the switch unit 40. The output end of the switch unit 40 is connected to the reset end of the control unit 20. When the over-temperature alarm port of the processor 10 outputs an over-temperature alarm signal to the input end of the level conversion unit 30, the level conversion unit 30 performs level conversion on the over-temperature alarm signal and outputs the level-converted over-temperature alarm signal to the control end of the switch unit 40 through its output end. When the switch unit 40 receives the level-converted over-temperature alarm signal at its control end, it is turned on and outputs a reset signal to the reset end of the control unit 20 through its output end, so that the control unit 20 cuts off the power supply of the computer motherboard to the computer motherboard.

[0023] Specifically, when the temperature of the processor 10 exceeds a preset warning temperature, an over-temperature alarm signal will be generated. Once the processor 10 generates an over-temperature alarm signal, the over-temperature alarm signal will be input into the switch unit 40 after being level-converted by the level conversion unit 30, so that the switch unit 40 is turned on and correspondingly outputs a reset signal to the control unit 20. After receiving the reset signal, the control unit 20 is reset to cut off the power supply of the computer motherboard to the computer motherboard, realizing over-temperature shutdown of the processor.

[0024] Thus, the computer motherboard of the present utility model can immediately cut off the power supply of the computer motherboard when the processor 10 generates an over-temperature alarm signal, so that the computer motherboard stops working, realizing over-temperature shutdown of the processor, thereby preventing the processor 10 and its internal modules from being damaged by high temperature, and providing timely and effective over-temperature shutdown protection for the processor 10 and the computer motherboard.

[0025] Specifically, when the temperature of the processor 10 is higher than a preset warning temperature, the over-temperature alarm signal is generated. The over-temperature alarm signal is a high-level signal and is output through the over-temperature alarm port of the processor 10. When the temperature of the processor 10 is not higher than the preset warning temperature, the over-temperature alarm port remains at a low level. In a preferred embodiment, the processor 10 is a Feiteng processor. Preferably, the processor 10 is a Feiteng D3000 processor, which can generate the over-temperature alarm signal when its own temperature exceeds the preset warning temperature and output the over-temperature alarm signal through its over-temperature alarm port. However, the processor 10 of the present invention is not limited to the Feiteng D3000 processor, and any processor that can generate an over-temperature alarm signal when the temperature is higher than the preset warning temperature is acceptable.

[0026] The control unit 20 is used to control the power supply of the computer motherboard. In one embodiment, the control unit 20 is an Embedded Controller (EC for short), which is used to control the power supply of the computer motherboard. The control method of the control unit 20 for the power supply of the computer motherboard is well known to those skilled in the art and will not be elaborated here.

[0027] Furthermore, the level conversion unit 30 is used to convert the level of the over-temperature alarm signal, converting the level of the over-temperature alarm signal from 1.8V to 3.3V to meet the level requirements of the control unit 20 such as an embedded controller, and to prevent the control unit 20 from leaking electricity to the processor 10 and damaging the processor 10. In addition, the over-temperature alarm signal with a higher level can also turn on the switch unit 40 more quickly, so as to respond to the over-temperature alarm signal more timely and perform over-temperature shutdown protection.

[0028] In one embodiment, the level conversion unit 30 can be implemented by a level conversion chip. Such as Figure 2As shown, it is a circuit wiring diagram of the level conversion unit 30 of a computer motherboard according to an embodiment of the present invention. In this embodiment, the level conversion unit 30 includes a level conversion chip U1, and the level conversion chip U1 includes a first port A3, a first power supply port VCCA, a second port B3, a second power supply port VCCB, an enable terminal EN, and a ground terminal GND. Among them, the first port A3 serves as the input terminal of the level conversion unit 30. The first power supply port VCCA is the power supply port of the first port A3, connected to the P1V8SB power supply of the computer motherboard through a fourth resistor R4, connected to the P1V8 power supply of the computer motherboard through a fifth resistor R5, and grounded through a first capacitor C1. The second port B3 serves as the output terminal of the level conversion unit 30. The second power supply port VCCB is the power supply port of the second port B3, connected to the P3V3SB power supply of the computer motherboard through a sixth resistor R6, connected to the P3V3 power supply of the computer motherboard through a seventh resistor R7, and grounded through a second capacitor C2. The enable terminal EN is connected to the P1V8 power supply of the computer motherboard through an eighth resistor R8, and is effective at a high level. The ground terminal GND of the level conversion chip U1 is grounded.

[0029] The first port A3 of the level conversion chip U1 is connected to the over-temperature alarm port of the processor 10, receives the over-temperature alarm signal TS_OVER transmitted by the over-temperature alarm port, converts the level of the over-temperature alarm signal TS_OVER from 1.8V to 3.3V, and outputs the level-converted over-temperature alarm signal EC_TS_OVER from the second port B3. The level-converted over-temperature alarm signal EC_TS_OVER is used to input the control terminal of the switch unit 40. The second port B3 remains at a low level when the level conversion chip U1 does not receive the over-temperature alarm signal.

[0030] Furthermore, the switch unit 40 can be implemented by a triode level inversion circuit. In a preferred embodiment, the switch unit 40 includes an NMOS transistor. The gate of the NMOS transistor serves as the control terminal of the switch unit 40, the source of the NMOS transistor is grounded, and the drain of the NMOS transistor serves as the output terminal of the switch unit 40. When the processor 10 outputs an over-temperature alarm signal to the level conversion unit 30, the level conversion unit 30 performs level conversion on the over-temperature alarm signal and outputs the level-converted over-temperature alarm signal to the gate of the NMOS transistor. The NMOS transistor conducts, and the drain of the NMOS transistor outputs a low-level reset signal to the reset terminal of the control unit 20, causing the control unit 20 to reset, thereby cutting off the power supply of the computer motherboard.

[0031] In a preferred embodiment, the switch unit 40 further includes a first resistor and a second resistor. The gate of the NMOS transistor is connected to the output terminal of the level conversion unit 30 via the first resistor, and the second resistor is connected between the gate of the NMOS transistor and the ground. Further, in a preferred embodiment, the switch unit 40 further includes a third resistor, and the third resistor is connected between the drain of the NMOS transistor and the ground.

[0032] As Figure 3 shown, it is a circuit wiring diagram of the switch unit 40 of a computer motherboard according to an embodiment of the present invention. In this embodiment, the switch unit 40 includes an NMOS transistor Q1, a first resistor R1, a second resistor R2, and a third resistor R3. Among them, the gate of the NMOS transistor Q1 serves as the control terminal of the switch unit 40 and is connected to the output terminal of the level conversion unit 30 via the first resistor R1; the source of the NMOS transistor Q1 is grounded; the drain of the NMOS transistor Q1 serves as the output terminal of the switch unit 40 and is used to output a low-level reset signal WRST signal to the reset terminal of the control unit 20 such as an embedded controller EC. The second resistor R2 is connected between the gate of the NMOS transistor Q1 and the ground. The third resistor R3 is connected between the drain of the NMOS transistor Q1 and the ground.

[0033] Combined with Figure 2 the level conversion unit 30 shown in Figure 3 and the switch unit 40 shown in

[0034] the gate of the NMOS transistor Q1 is connected to the second port B3 of the level conversion chip U1 via the first resistor R1 for receiving the over-temperature alarm signal EC_TS_OVER after being level-converted by the level conversion unit 30.

[0035] In a preferred embodiment, the processor 10 of the present utility model can be implemented by a Feiteng D3000 processor; the level conversion unit 30 can be implemented by a level conversion chip U1, and the model of the level conversion chip U1 can be RS0108YQ20; the model of the NMOS transistor Q1 of the switching circuit 40 can be L2N7002WT1G; the control unit 20 can be an embedded controller, and its model can be IT8637; but it is not limited thereto.

[0036] In summary, for the computer motherboard of the present utility model, a level conversion unit and a switching unit are provided between the over-temperature alarm port of the processor and the reset terminal of the control unit for controlling the power supply of the computer motherboard. Once the processor generates an over-temperature alarm signal due to excessive temperature, the over-temperature alarm signal will be input into the switching unit after being level-converted by the level conversion unit to turn on the switching unit so that it outputs a reset signal to the control unit, causing the control unit to reset and thus cut off the power supply of the computer motherboard to the computer motherboard, realizing over-temperature shutdown of the processor. Thus, the computer motherboard of the present utility model can immediately cut off the power supply of the computer motherboard when the processor thereon generates an over-temperature alarm signal, causing the computer motherboard to stop working, realizing over-temperature shutdown of the processor, thereby preventing the processor and its internal modules from being damaged by high temperature, providing timely and effective over-temperature shutdown protection for the processor and the computer motherboard, and extending the service life of the processor and the computer motherboard.

[0037] As described above, for those of ordinary skill in the art, various corresponding changes and deformations can be made according to the technical solutions and technical concepts of the present utility model, and all these changes and deformations should fall within the protection scope of the claims of the present utility model.

Claims

1. A computer motherboard, comprising a processor and a control unit, wherein the control unit is configured to control the power supply of the computer motherboard, characterized in that, The processor has an over-temperature alarm port. The computer motherboard further includes a level conversion unit and a switch unit. The over-temperature alarm port of the processor is connected to the input end of the level conversion unit. The output end of the level conversion unit is connected to the control end of the switch unit. The output end of the switch unit is connected to the reset end of the control unit. Wherein, when the over-temperature alarm port of the processor outputs an over-temperature alarm signal to the input end of the level conversion unit, the level conversion unit performs level conversion on the over-temperature alarm signal and outputs the level-converted over-temperature alarm signal to the control end of the switch unit through its output end. When the switch unit receives the level-converted over-temperature alarm signal at its control end, it turns on and outputs a reset signal to the reset end of the control unit through its output end, so that the control unit cuts off the power supply of the computer motherboard to the computer motherboard.

2. The computer motherboard according to claim 1, characterized in that, The switch unit includes an NMOS transistor. The gate of the NMOS transistor serves as the control end of the switch unit. The source of the NMOS transistor is grounded. The drain of the NMOS transistor serves as the output end of the switch unit.

3. The computer motherboard according to claim 2, characterized in that, The switch unit further includes a first resistor and a second resistor. The gate of the NMOS transistor is connected to the output end of the level conversion unit through the first resistor. The second resistor is connected between the gate of the NMOS transistor and the ground.

4. The computer motherboard according to claim 2, characterized in that, The switch unit further includes a third resistor. The third resistor is connected between the drain of the NMOS transistor and the ground.

5. The computer motherboard according to claim 1, characterized in that, The level conversion unit performs level conversion on the over-temperature alarm signal, converting the level of the over-temperature alarm signal from 1.8V to 3.3V.

6. The computer motherboard according to claim 5, characterized in that, The level conversion unit includes a level conversion chip. The level conversion chip includes a first port, a first power supply port, a second port, a second power supply port, an enable end, and a ground end. Wherein, the first port serves as the input end of the level conversion unit; the first power supply port is the power supply port of the first port, connected to the P1V8SB power supply of the computer motherboard through a fourth resistor, connected to the P1V8 power supply of the computer motherboard through a fifth resistor, and grounded through a first capacitor; the second port serves as the output end of the level conversion unit; the second power supply port is the power supply port of the second port, connected to the P3V3SB power supply of the computer motherboard through a sixth resistor, connected to the P3V3 power supply of the computer motherboard through a seventh resistor, and grounded through a second capacitor; the enable end is connected to the P1V8 power supply of the computer motherboard through an eighth resistor and is effective at a high level; the ground end is grounded.

7. The computer motherboard according to claim 1, characterized in that, The control unit is an embedded controller.

8. The computer motherboard according to any one of claims 1-7, characterized in that, The processor is a Feiteng processor.

9. The computer motherboard according to claim 8, characterized in that, The processor is a Feiteng D3000 processor.

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