CN113407418B - Computer early warning monitoring circuit and monitoring method - Google Patents

Abstract

The invention relates to a computer early warning monitoring circuit and its monitoring method. The computer early warning monitoring circuit includes a first capacitor, an analog-to-digital conversion unit, a control unit and an alarm unit, and the first capacitor includes a first pole plate and a second pole plate, the thermal paste extends at least partially between the first pole plate and the second pole plate, and the first pole plate or the second pole plate is electrically connected to the analog-to-digital conversion unit; the The analog-to-digital conversion unit is electrically connected with the control unit, and is used for converting the analog signal transmitted from the first capacitor into a digital signal; the control unit is electrically connected with the alarm unit, and is used for according to the digital signal Calculate the capacitance change of the first capacitor to control the alarm unit to give an alarm. The invention can well protect the computer and improve the service life of the computer.

Description

Computer early warning monitoring circuit and its monitoring method

technical field

The invention relates to the field of computer technology, in particular to a computer early warning monitoring circuit and a monitoring method thereof.

Background technique

A computer, commonly known as a computer, is an electronic computing machine used for high-speed calculations. It can perform numerical calculations, logic calculations, and storage and memory functions. It is a modern intelligent electronic device that can run according to programs and process massive amounts of data automatically and at high speed. , consists of a hardware system and a software system, and a computer without any software installed is called a bare metal.

Computers can be divided into five categories: supercomputers, industrial control computers, network computers, personal computers, and embedded computers. More advanced computers include biological computers, photonic computers, quantum computers, etc. Computers usually generate a lot of heat during work. Failure to dissipate the heat in time will affect the service life of the computer. In existing computers, in order to dissipate the heat generated by the central processing unit in a timely manner, a heat sink and thermal paste between the heat sink and the central processing unit are usually provided. The heat generated during work is quickly transferred to the radiator for heat dissipation. However, as time goes by, the thermal paste tends to dry out, so that the heat cannot be conducted to the radiator for heat dissipation in time, resulting in frequent shutdowns or damage to the CPU. Therefore, how to monitor the thermal conductivity of the thermal paste to prompt the user to replace the thermal paste has become an urgent problem to be solved.

Contents of the invention

Based on this, it is necessary to address the above problems and provide a computer early warning monitoring circuit and monitoring method for monitoring the heat conduction of the thermal paste to prompt the user to replace the thermal paste.

In the first aspect, the present invention provides a computer early warning monitoring circuit, which is used to monitor the heat conduction of the heat conduction paste between the radiator and the central processing unit in the computer mainframe, including a first capacitor, an analog-to-digital conversion unit, a control unit and an alarm unit , the first capacitor includes a first pole plate and a second pole plate, the thermal conductive paste extends at least partially between the first pole plate and the second pole plate, the first pole plate or the The second plate is electrically connected to the analog-to-digital conversion unit; the analog-to-digital conversion unit is electrically connected to the control unit, and is used to convert the analog signal transmitted from the first capacitor into a digital signal; the control unit It is electrically connected with the alarm unit, and is used for calculating the capacitance change of the first capacitor according to the digital signal, so as to control the alarm unit to give an alarm.

In one embodiment, the first polar plate is grounded, and the second polar plate is electrically connected to the analog-to-digital conversion unit.

In one embodiment, it further includes a second capacitor and a multiplexer, the second capacitor includes a third plate and a fourth plate, and the thermal paste at least partially extends to the third plate and the Between the fourth pole plates, the third pole plate or the fourth pole plate is electrically connected to the multiplexer; the multiplexer is electrically connected to the analog-to-digital conversion unit, and the first A capacitor is electrically connected to the multiplexer to be electrically connected to the analog-to-digital conversion unit through the multiplexer.

In one embodiment, the number of the second capacitors is several, all of which are flat plate capacitors, several of the third plates are arranged in a row, several of the fourth plates are arranged in a row, and the first The three pole plates are arranged opposite to the fourth pole plate, and the third pole plate and the fourth pole plate are respectively located on opposite sides of the central processing unit.

In one embodiment, the third plate is grounded, and the fourth plate is electrically connected to the multiplexer.

In one embodiment, the first capacitor is a mica capacitor or a glass glaze capacitor.

In one embodiment, the computer early warning monitoring circuit further includes a calibration unit, which is used to calibrate the digital signal output by the analog-to-digital conversion unit, and transmit the calibrated digital signal to the control unit .

In the second aspect, this embodiment also discloses the monitoring method of the computer early warning monitoring circuit described in any one of the above first aspects, including the following steps:

Obtain computer power-on signal;

Acquiring the real-time capacitance of the first capacitor according to the computer power-on signal;

comparing the real-time capacitance with a first preset capacitance value;

When the absolute value of the difference between the real-time capacitance and the first preset capacitance value is greater than the first preset value, the alarm unit is controlled to give an alarm.

The above-mentioned computer early warning monitoring circuit and detection method have at least the following advantages:

In the present invention, through the cooperation among the first capacitor, the analog-to-digital conversion unit, the control unit and the alarm unit, the first capacitor includes a first pole plate and a second pole plate, and the thermal conductive paste extends at least partially to the Between the first pole plate and the second pole plate, during the use of the computer, as time goes by, when the heat conduction paste dries to a certain level, so as to affect the heat transfer of the central processing unit to the radiator, That is, when the absolute value of the difference between the monitored real-time capacitance and the first preset capacitance value is greater than the first preset value, the alarm unit is controlled to give an alarm, so that the user can know that the thermal paste becomes dry enough to affect the work of the computer layer, so that the thermal paste can be replaced in time, thus protecting the computer well and improving the service life of the computer.

Description of drawings

Fig. 1 is the schematic diagram of the first embodiment of the computer early warning monitoring circuit of the present invention;

Fig. 2 is the structural schematic view when the first capacitor and the second capacitor of the first embodiment of the computer early warning monitoring circuit of the present invention cooperate with the central processing unit and the thermal paste;

Fig. 3 is the schematic diagram of the second embodiment of the computer early warning monitoring circuit of the present invention;

Fig. 4 is a flow chart of the monitoring method of the computer early warning monitoring circuit of the present invention.

Detailed ways

Below in conjunction with accompanying drawing, the present invention is described in further detail:

Please refer to Fig. 1 and Fig. 2, the present invention discloses a computer early warning monitoring circuit, which is used to monitor the heat conduction of the heat conduction paste 200 between the heat sink and the central processing unit 100 in the computer mainframe, and the computer early warning monitoring circuit includes the first A capacitor 1, a second capacitor 2, a multiplexer 3, an analog-to-digital conversion unit 4, a control unit 5 and an alarm unit 6, the first capacitor 1 is a flat panel capacitor, which includes a first plate 11 and a second pole plate 12, the first pole plate 11 and the second pole plate 12 are located opposite to each other and are respectively located on opposite sides of the central processing unit 100, and the thermal conductive paste 200 partially extends to the first pole plate 11 and the second pole plate 12, wherein the thermally conductive paste 200 can be a material such as thermally conductive silicone grease, as long as it can conduct heat, and its material is not specifically limited here.

The first pole plate 11 is grounded, and the second pole plate 12 is electrically connected to the analog-to-digital conversion unit 4 . Certainly, in another embodiment, the second polar plate 12 is grounded, and the first polar plate 11 is electrically connected to the analog-to-digital conversion unit 4 . That is to say, one of the first pole plate 11 or the second pole plate 12 is electrically connected to the analog-to-digital conversion unit 4 . More specifically, the multiplexer 3 is electrically connected to the analog-to-digital conversion unit 4, and the first capacitor 1 is electrically connected to the multiplexer 3, so as to communicate with the multiplexer 3 through the multiplexer 3. The analog-to-digital conversion unit 4 is electrically connected. In this embodiment, the first capacitor 1 is a mica capacitor, which has a small temperature coefficient, high stability, and high reliability, so it is not easily affected by the heat generated by the central processing unit 100 during operation. Preferably, the orthographic projection of the geometric center of the first capacitor 1 on the upper surface of the central processing unit 100 is located on the geometric center of the central processing unit 100, so that the thermal paste in the hottest area of the central processing unit 100 can be monitored. The drying condition, that is, the heat conduction condition, thereby protecting the central processing unit 100 as much as possible, and improving the protection effect.

The second capacitor 2 is a flat plate capacitor, the number of the second capacitor 2 is several, and it includes a third pole plate 21 and a fourth pole plate 22, and the third pole plate 21 and the fourth pole plate 22 are located opposite to each other, the third pole plate 21 and the fourth pole plate 22 are located opposite to each other and are respectively located on opposite sides of the central processing unit 100, and the thermal conductive paste 200 partially extends to the third pole plate 22. Between the pole plate 21 and the fourth pole plate 22, the third pole plate 21 is grounded and located on the same side of the central processing unit 100 as the first pole plate 11, and several third pole plates The plates 21 are arranged in a row.

The fourth pole plate 22 is electrically connected to the multiplexer 3 and is located on the same side of the central processing unit 100 as the second pole plate 12, and several fourth pole plates 22 are arranged in a row , the third pole plate 21 and the fourth pole plate 22 are respectively located on opposite sides of the central processing unit 100 . In this embodiment, the second capacitor 2 is a mica capacitor, which has a small temperature coefficient, high stability, and high reliability, so it is not easily affected by the heat generated by the central processing unit 100 during operation.

It can be understood that, in another embodiment, the first capacitor 1 and the second capacitor 2 are both glass glaze capacitors, and glass glaze capacitors have the advantages of high temperature resistance, low loss and good stability, so they are not It is easily affected by the heat generated by the CPU 100 during its operation. Of course, the first capacitor 1 and the second capacitor 2 can be selected according to needs, and their types are not specifically limited here.

The multiplexer 3 is used to conduct the first capacitor 1 or one of the second capacitors 2 with the analog-to-digital conversion unit 4 within a preset time, so as to switch the first capacitor 1 or The capacitance signal of the second capacitor 2 is sent to the analog-to-digital conversion unit 4 . Wherein, the preset time may be a unit time, and the unit time may be 1 second or 1 minute, etc., which can be set according to needs, and is not specifically limited here.

Through the cooperation between the multiplexer 3 and the first capacitor 1, the second capacitor 2 and the analog-to-digital conversion unit 4, there is no need to set a plurality of analog-to-digital conversion units 4 and reduce the port occupation of the control unit 5 resources to achieve cost savings. In addition, the overall circuit structure is made more concise, it is convenient to run wires, and the space occupied by the computer is reduced.

The analog-to-digital conversion unit 4 is electrically connected to the control unit 5, and is used to convert the analog signal transmitted from the first capacitor 1 and the second capacitor 2 into a digital signal, so that the control unit 5 can identify. The control unit 5 is electrically connected to the alarm unit 6, and is used for calculating the capacitance variation of the first capacitor 1 and the second capacitor 2 according to the digital signal, so as to control the alarm unit 6 to give an alarm. For example, when the capacitance change value of the first capacitor 1 or the second capacitor 2 is greater than a preset value, the control unit 5 controls the alarm unit 6 to issue an alarm. The control unit 5 may include a single chip microcomputer or a programmable logic array, etc., and the alarm unit 6 may include an LED indicator light or a buzzer, etc., which are not specifically limited here.

In another embodiment, as shown in Figure 3, the computer early warning monitoring circuit also includes a calibration unit 7, the calibration unit 7 is used to calibrate the digital signal output by the analog-to-digital conversion unit 4, and calibrate The final digital signal is sent to the control unit 5, thus better avoiding the problem of misjudgment.

Please refer to Fig. 4, this embodiment also discloses the monitoring method of the computer early warning monitoring circuit described in the first embodiment above, including the following steps:

S1. Obtain a computer power-on signal;

The control unit 5, which is electrically connected to the power supply of the computer, obtains a power-on signal of the computer when the computer is turned on.

S2. Obtain the real-time capacitance of the first capacitor 1 according to the computer power-on signal;

After the computer is turned on, at a preset time, the multiplexer 3 selects the first capacitor 1 to conduct with the analog-to-digital conversion unit 4, and the control unit 5 passes the analog-to-digital conversion unit 4 The transmitted signal obtains the real-time capacitance of the first capacitor 1 . It can be understood that the real-time capacitance refers to the capacitance of the first capacitor 1 at this moment.

S3. Comparing the real-time capacitance with a first preset capacitance value;

The control unit 5 performs a difference calculation between the real-time capacitance and the first preset capacitance value.

S4. When the absolute value of the difference between the real-time capacitance and the first preset capacitance value is greater than the first preset value, control the alarm unit 6 to give an alarm.

When the absolute value of the difference between the real-time capacitance and the first preset capacitance value is greater than the first preset value, that is, when the humidity change of the thermal paste 200 is greater than the preset humidity, it means that the thermal paste is dry. temperature has reached a critical value, the control unit 5 controls the alarm unit 6 to issue an alarm to remind the user to replace the heat dissipation paste, otherwise the central processing unit 100 has a risk of overheating.

Preferably, after the step S4, the monitoring method further includes the following steps:

Obtaining the real-time capacitance of the second capacitor 2 in sequence;

That is, after the capacitance of the first capacitor 1 is measured, the capacitance of the second capacitor 2 is measured in a preset order.

respectively comparing the real-time capacitance of the second capacitor 2 with a second preset capacitance value;

When the absolute value of the difference between the real-time capacitance of the second capacitor 2 and the second preset capacitance value is greater than the second preset value, the alarm unit 6 is controlled to give an alarm.

By detecting the real-time capacitance of the second capacitor 2, it is possible to have a more comprehensive understanding of the humidity change of the heat dissipation paste, thereby improving the accuracy of detection, and better avoiding the problem of overheating in some areas caused by uneven application of the heat conduction paste 200, The central processing unit 100 is well protected, and the problem that the computer is automatically shut down due to overheating and the user does not know the reason is solved. Wherein, the detection sequence of the second capacitor 2 can be selected according to needs, and the detection sequence is not specifically limited here.

In summary, the present invention, through the cooperation between the first capacitor 1, the analog-to-digital conversion unit 4, the control unit 5 and the alarm unit 6, the first capacitor 1 includes the first pole plate 11 and the second pole plate 12. The thermal conductive paste 200 extends at least partially between the first pole plate 11 and the second pole plate 12. During the use of the computer, as time goes by, when the thermal conductive paste 200 dries to a certain layer When the heat that affects the central processing unit 100 is transferred to the radiator, that is, when the absolute value of the difference between the monitored real-time capacitance and the first preset capacitance value is greater than the first preset value, the alarm is controlled. The unit 6 gives an alarm, so the user can know that the heat conduction paste 200 has dried out to the extent that it affects the operation of the computer, so that the heat conduction paste 200 can be replaced in time, thereby protecting the computer well and improving the service life of the computer.

The technical features of the above-mentioned embodiments can be combined arbitrarily. To make the description concise, all possible combinations of the technical features in the above-mentioned embodiments are not described. However, as long as there is no contradiction in the combination of these technical features, should be considered as within the scope of this specification.

The above-mentioned embodiments only express several implementation modes of the present invention, and the descriptions thereof are relatively specific and detailed, but should not be construed as limiting the patent scope of the invention. It should be noted that those skilled in the art can make several modifications and improvements without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent for the present invention should be based on the appended claims.

Claims (6)

1. a computer early warning monitoring circuit, for monitoring the heat conduction situation of the heat conduction paste between radiator and central processing unit in the mainframe computer, it is characterized in that: comprise the first capacitor, analog-to-digital conversion unit, control unit and alarm unit, The first capacitor includes a first pole plate and a second pole plate, the thermal conductive paste extends at least partially between the first pole plate and the second pole plate, and the first pole plate or the second pole plate The dipole plate is electrically connected to the analog-to-digital conversion unit; the analog-to-digital conversion unit is electrically connected to the control unit, and is used to convert the analog signal transmitted from the first capacitor into a digital signal; the control unit is connected to the control unit. The alarm unit is electrically connected, and is used to calculate the capacitance change of the first capacitor according to the digital signal, so as to control the alarm unit to issue an alarm; The computer early warning monitoring circuit also includes a second capacitor and a multiplexer, the second capacitor includes a third plate and a fourth plate, and the thermal paste extends at least partially to the third plate and the Between the fourth pole plates, the third pole plate or the fourth pole plate is electrically connected to the multiplexer; the multiplexer is electrically connected to the analog-to-digital conversion unit, and the first A capacitor is electrically connected to the multiplexer to be electrically connected to the analog-to-digital conversion unit through the multiplexer; The number of the second capacitors is several, and all of them are flat plate capacitors. Several of the third pole plates are arranged in a row, and a plurality of the fourth pole plates are arranged in a row. The fourth pole plate is located opposite to each other, and the third pole plate and the fourth pole plate are respectively located on opposite sides of the central processing unit. 2 . The computer early warning and monitoring circuit according to claim 1 , wherein the first polar plate is grounded, and the second polar plate is electrically connected to the analog-to-digital conversion unit. 3 . 3 . The computer early warning and monitoring circuit according to claim 1 , wherein the third polar plate is grounded, and the fourth polar plate is electrically connected to the multiplexer. 4 . 4. The computer early warning and monitoring circuit according to claim 1 or 2, wherein the first capacitor is a mica capacitor or a glass glaze capacitor. 5. The computer early warning monitoring circuit according to claim 1 or 2, wherein the computer early warning monitoring circuit also includes a calibration unit, and the calibration unit is used to calibrate the digital signal output by the analog-to-digital conversion unit , and transmit the calibrated digital signal to the control unit. 6. A monitoring method of the computer early warning monitoring circuit according to any one of claims 1 to 5, characterized in that, comprising the steps of: Obtain computer power-on signal; Acquiring the real-time capacitance of the first capacitor according to the computer power-on signal; comparing the real-time capacitance with a first preset capacitance value; When the absolute value of the difference between the real-time capacitance and the first preset capacitance value is greater than the first preset value, the alarm unit is controlled to give an alarm.

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