CN100541392C - Temperature detection system and method - Google Patents

Abstract

A temperature detecting system and method, for detecting the working temperature of the object to be detected in an electronic device, and driving the heat dissipating unit in the electronic device to dissipate the heat of the object to be detected when the working temperature is higher than a predetermined value, is to detect the working current of the object to be detected; converting the detected working current into a digital signal which can be read by the electronic equipment; and calculating according to the digital signal to obtain the consumed power of the object to be detected, taking the consumed power as the working temperature of the object to be detected, and driving the heat dissipation unit to dissipate the heat of the object to be detected by using the working temperature corresponding to the consumed power.

Description

Temperature detection system and method

technical field

The present invention relates to a temperature detection system and method. More specifically, it involves relatively obtaining the power consumed by the object to be measured according to the detected operating current of the object to be measured, and using the power consumption as the target A temperature detection system and method for measuring the working temperature of an object to drive a cooling unit to dissipate heat from the object to be measured when the operating temperature is detected to be higher than a predetermined value.

Background technique

With the development of science and technology, the performance of various electronic devices has been relatively improved. For example, to measure the operating temperature generated by the system operation of the electronic device, a temperature sensing chip (IC) is currently used to measure the temperature generated by the system. However, In this kind of temperature measurement method, the temperature sensing chip must be placed close to the object to be measured, such as a central processing unit or a hard disk, which is limited by the temperature sensing chip and its setting method, so the current temperature measurement method cannot target The temperature of all electronic parts in electronic equipment is measured.

In addition, the temperature sensing chip used in this type of temperature measurement method itself has a fixed transmission line specification, in order to measure the temperature of the object to be measured through the transmission line, so the object to be measured must have a connection line corresponding to the transmission line However, generally speaking, the object to be measured does not have a connection line corresponding to the transmission line of the temperature sensing chip, so this type of temperature measurement method is also limited to the connection line corresponding to the transmission line of the temperature sensing chip .

Therefore, how to design a temperature detection system to overcome the problem that the setting position of the temperature sensing chip is limited by the position of the object to be measured and the electronic equipment on the temperature detection processing needs to have a transmission line that can support the temperature sensing chip , is an urgent problem to be solved at present.

Contents of the invention

In view of the above-mentioned problems in the prior art, an object of the present invention is to provide a temperature detection system and method, which is used to solve the problem that the position of the temperature sensing chip is limited by the position of the object to be measured and the electronic equipment required for temperature detection processing. Corresponding to the problem of having a transmission line that can support the temperature sensing chip.

Another object of the present invention is to provide a temperature detection system and method for detecting the power consumed by the temperature detection object, and controlling the power consumption of the electronic device according to the relationship between the heat dissipation efficiency of the heat dissipation unit and the power consumption of the electronic device. The heat dissipation mechanism provided by the heat dissipation unit is used as an energy-saving control of the electronic equipment in the overall system.

Another object of the present invention is to provide a temperature detection system and method for detecting the power consumption and heat measurement of the electronic equipment in the overall system.

To achieve all the above objects and other objects, the present invention provides a temperature detection system and method. The temperature detection system of the present invention is used to detect the operating temperature of the object to be measured in an electronic device, and when it detects that the operating temperature is higher than a predetermined value, it drives the heat dissipation unit in the electronic device to the object to be tested The temperature detection system includes: a detection module, which is used to detect the operating current of the object to be measured; a conversion module, which is used to convert the operating current detected by the detection module into digital signal and output it; and the control module is used for receiving the digital signal output by the conversion module, performing calculations based on the digital signal to obtain the power consumption of the object to be measured, and using the power consumption as the power consumption of the object to be measured The operating temperature of the object, and the cooling unit is driven to dissipate heat from the object under test at the operating temperature corresponding to the power consumption.

In the present invention, the heat generated by the object to be measured is determined by the power consumption of the object to be measured, so that the control module controls the heat dissipation of the heat dissipation unit according to the relationship between the heat dissipation efficiency of the heat dissipation unit and the power consumption of the object to be measured. Heat dissipation performance, for example, the cooling unit is a fan, when the heat generated by the object to be measured is too high, the control module drives the fan to run at full speed to reduce the heat generated by the object to be measured, and because the electronic device The object under test will stop running relatively according to the system operating status of the electronic equipment, so the object under test will not consume any power when it stops running, and the fan is prohibited from running or the fan is maintained at a low speed. It can effectively control the noise generated by the fan when the speed changes. Therefore, the temperature detection system of the present invention is based on the temperature impact caused by power consumption as a reference for the heat dissipation mechanism.

Executing the heat dissipation temperature detection method of the present invention through the temperature detection system of the present invention is used to detect the operating temperature of the object to be tested in an electronic device, and when the detected operating temperature is higher than a predetermined value, it is driven The heat dissipation unit in the electronic equipment dissipates heat from the object to be measured, and the temperature detection method includes the following steps: detecting the operating current of the object to be measured; converting the detected operating current into The read digital signal; and performing calculations based on the digital signal to obtain the power consumption of the object to be measured, and use the power consumption as the working temperature of the object to be measured, and drive the heat dissipation at the working temperature corresponding to the power consumption The unit performs heat dissipation on the object under test.

Compared with the prior art, the temperature detection system and method of the present invention can effectively eliminate the need to consider the location of the object to be measured in the setting of the existing temperature sensing chip, and the electronic equipment in the temperature detection process needs to be equipped to support the temperature sensor. In addition, since the heat dissipation is performed according to the actual power consumption of the object to be measured, the generation of noise can be effectively controlled, and the setting of the temperature sensing chip can also be exempted, thereby reducing the power consumption of electronic equipment; On the one hand, the heat dissipation performance of the heat dissipation unit is controlled according to the relationship between the heat dissipation efficiency of the heat dissipation unit and the power consumption of the object to be measured, thereby achieving energy-saving control of the electronic equipment. Furthermore, through the temperature detection system of the present invention, the power consumption of the object to be measured can be obtained, and this can be used as the power consumption of the object to be measured itself, or the power consumption of the entire system of the electronic device can be obtained, based on the power consumption The temperature effect caused by consumption can be used as a reference for the heat dissipation mechanism. In other words, the heat dissipation performance of the heat dissipation unit can also be controlled according to the power consumed by the overall system of the electronic device or the local electronic components. Energy-saving control on heat dissipation.

Description of drawings

FIG. 1 is a schematic block diagram of the basic structure of the temperature detection system of the present invention; and

FIG. 2 is a basic flowchart of the temperature detection method of the present invention.

[Description of main component symbols]

1 Temperature detection system

10 detection module

11 conversion module

12 control module

2 electronic equipment

20 objects to be tested

21 cooling unit

S201～S203 steps

Detailed ways

The implementation of the present invention is described below through specific specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and various modifications and changes can be made to the details in this specification based on different viewpoints and applications without departing from the spirit of the present invention.

As shown in FIG. 1 , it is a schematic block diagram of the basic structure of the temperature detection system 1 of the present invention. The temperature detection system 1 is applied in the electronic equipment 2, and can be directly built in the electronic equipment 2, so as to sense the temperature of the object 20 to be measured in the electronic equipment 2, and drive the The heat dissipation unit 21 in the electronic device 2 executes a heat dissipation mechanism corresponding to the temperature sensing result. In this embodiment, the object under test 20 is such as a CPU, and the heat dissipation unit 21 is a fan. If the test result is high temperature, the electronic device 2 drives the fan to run at full speed to reduce the temperature of the object 20 to be tested. Since the electronic components in the electronic device 2 will be in a state of running or stopping in response to the operating conditions of the system, the corresponding power will be consumed when the electronic components are running. Relatively, no power will be consumed when the electronic components stop running, so , the temperature detection system 1 of the present invention is based on the temperature impact caused by power consumption as a reference for the heat dissipation mechanism.

The temperature detection system 1 of the present invention includes: a detection module 10 , a conversion module 11 , a control module 12 and a memory 120 , and the temperature detection system 1 of the present invention will be described in detail below.

The detection module 10 is used to detect the working current of the object under test 20, and obtain the corresponding power consumption through the detection of the current. Generally speaking, the detection module 10 is a current detection circuit. In this embodiment, the working current of the object under test 20 determines the power consumed by it, and the heat generated by the object under test 20 can be determined from the consumed power, which is then used as the working temperature of the object under test.

The conversion module 11 is used for performing analog-to-digital conversion (ADC) on the operating current detected by the detection module 10, so as to convert the operating current into a digital signal for output. The control module 12 is used for controlling the heat dissipation unit 21 to perform a relative heat dissipation mechanism for the object under test 20 according to the digital signal output by the conversion module 11 upon receiving the digital signal. Wherein, the control module 12 and the conversion module 11 realize the transmission processing of digital signals through transmission lines such as I2C or GPIO.

The control module 12 is such as the control center of the electronic device 2, for example, if the electronic device 2 is a desktop computer or a notebook computer, then the control module 12 is a central processing unit (CPU); if the electronic device 2 is a server, the control module 12 is a baseboard management controller (BMC). Generally speaking, the control module 12 is electrically connected to the memory 120 for storing multiple operating parameters, wherein the operating parameters refer to the control speed of the fan and the resistance value of the object to be measured, and the control speed of each fan is also consistent with the preset Corresponding to the set power consumption, so that after the control module 12 receives the output digital signal converted by the conversion module 11, according to the initial output source of the digital signal, that is, the initial generation source of the digital signal is the The object to be measured 20 is used to obtain the resistance value of the object to be measured 20 and calculate the resistance value with the received digital signal (that is, the current flowing through the object to be measured) to obtain the consumption of the object to be measured 20 power, so that the control module 12 obtains the corresponding fan control speed from the memory 12 according to the obtained power consumption of the object under test 20, and then drives the cooling unit 21 to dissipate heat according to the obtained fan control speed.

As can be seen from the above, the detection module 10 detects the current flowing through the object to be measured 20, and the conversion module 11 performs digital conversion on the measured current for the control module 12 to use according to the received The digital signal and the resistance value of the object to be measured 20 prestored in the memory 120 are used to obtain the power consumed by the object to be measured 20, and then the fan speed corresponding to the power is used to drive the cooling unit to perform heat dissipation. Therefore, the temperature of the present invention The detection system 1 is to add a current detection circuit (that is, a detection module) and use the analog-to-digital conversion circuit (that is, a conversion module) and a control module originally provided by the existing electronic equipment 2 to obtain the power consumption of the object to be measured And use it as the working temperature of the object to be measured, or obtain all the power consumption of the overall system of the electronic equipment, and use it as a reference for the heat dissipation mechanism based on the temperature influence caused by the power consumption. The temperature detection system 1 of the present invention can effectively eliminate the problem that the existing temperature sensing chip needs to consider the location of the object to be measured and the electronic equipment in the temperature detection process needs to have a transmission line that can support the temperature sensing chip. , in addition, because the heat dissipation is performed according to the actual power consumption of the object to be measured, the generation of noise can be effectively controlled, and the setting of the temperature sensing chip can also be avoided, thereby reducing the power consumption of the electronic device. On the other hand, according to the heat dissipation unit 21 The relationship between the heat dissipation efficiency and the power consumption of the object to be measured is used to control the heat dissipation performance of the heat dissipation unit 21 , thereby achieving energy-saving control of the electronic device 2 .

The flow chart of implementing the temperature detection method of the present invention through the temperature detection system 1 of the present invention is shown in Figure 2. The method includes the following implementation steps: In step S201, detect the The operating current of the object under test 20 . Next, go to step S202.

In step S202 , digital conversion is performed by the conversion module 11 according to the working current detected by the detection module 10 , so as to be converted into a digital signal that can be interpreted by the electronic device 2 . Next, go to step S203.

In step S203, the control module 12 calculates the power consumed by the object under test 20 according to the received digital signal, so that the control module 12 uses the calculated power to control the heat dissipation unit 21 to implement a corresponding heat dissipation mechanism. It should be noted here that since the control module 12 is electrically connected to the memory 120 for storing multiple operating parameters, wherein the operating parameters refer to the control speed of the fan and the resistance value of the object to be measured, and each fan's The control speed also corresponds to the preset power consumption, for example, the higher the power consumption, the higher the fan speed, so the control module 12 receives the digital signal converted by the conversion module 11 (that is, flows through the object under test current) and the resistance value of the object to be measured 20 to obtain the power consumed by the object to be measured 20, that is, the power acquisition method includes multiplying the operating voltage of the object to be measured by the operating current of the object to be measured, Or the square of the operating current of the object to be measured is multiplied by the resistance of the object to be measured. In this embodiment, the square of the operating current of the object to be measured is multiplied by the resistance of the object to be measured to obtain the object to be measured According to the obtained power consumption of the object under test 20, the control module 12 obtains the corresponding fan control speed, and then drives the cooling unit 21 to dissipate heat according to the obtained fan control speed.

Compared with the prior art, the temperature detection system and method of the present invention mainly detects the operating current of the object to be measured 20 through the detection module 10, and converts the operating current into a digital signal for the electronic device 2 The control module 12 in the control module 12 judges, and then obtains the power consumption of the object under test 20 through the calculation of power consumption, so as to control the operation of the heat dissipation unit 21 according to the heat dissipation parameters corresponding to the power consumption. Therefore, through the temperature detection system and method of the present invention, it is possible to effectively eliminate the need to consider the location of the object to be measured for the setting of the existing temperature sensing chip, and the electronic equipment for temperature detection processing must be equipped with a device that can support the temperature sensing chip. The problem of the transmission line; in addition, because the present invention carries out cooling according to the actual power consumption situation of the object under test, it can adjust the operation of the fan in a timely manner, for example, the fan is driven to run at full speed when the power consumed by the object under test reaches a high power, Otherwise, if the object to be measured stops running and there is no power consumption, the fan is prohibited from running or the fan is kept at a low speed. Therefore, the temperature sensing system and method of the present invention can also effectively control the fan when the speed changes. the noise produced.

Claims (6)

1. A temperature detection system, which is used to detect the operating temperature of an object under test in an electronic device, and drives the fan in the electronic device to detect the operating temperature of the object to be tested when the operating temperature is detected to be higher than a predetermined value. The temperature detection system includes: A detection module is used to detect the working current of the object to be tested; The conversion module is used to convert the working current detected by the detection module into a digital signal and output it; and The control module is electrically connected to the memory for storing multiple operating parameters. The operating parameters include the control speed of the fan and the resistance value of the object to be measured, and the control speed of each fan corresponds to the preset power consumption , so that after the control module receives the digital signal output by the conversion module, it takes out the resistance value of the object under test that initially generates the digital signal from the memory, and performs calculations on the resistance value and the received digital signal, according to The digital signal is calculated to obtain the power consumption of the object to be measured, so that the control module obtains the corresponding fan control speed from the memory according to the obtained power consumption of the object to be measured, and uses the power consumption as the object to be measured The operating temperature corresponding to the power consumption is used to drive the fan to dissipate heat from the object under test according to the obtained fan control speed. 2. The temperature detection system according to claim 1, wherein the electronic device is a server, the temperature detection system is built in the server, and the control module is a baseboard management controller (BMC) of the server . 3. The temperature detection system according to claim 1, wherein the electronic device is a computer, the temperature detection system is built in the computer, and the control module is a central processing unit (CPU) of the computer. 4. A temperature detection method, which is used to detect the operating temperature of an object to be tested in an electronic device, and when it is detected that the operating temperature is higher than a predetermined value, the fan in the electronic device is driven to the object to be tested. The measured object is radiated heat, and the method includes the following steps: The electronic device stores multiple operating parameters in the memory, the operating parameters include the control speed of the fan and the resistance value of the object to be measured, and the control speed of each fan corresponds to the preset power consumption; detecting the working current of the object to be tested; convert the detected operating current into a digital signal readable by the electronic device; and The resistance value of the object to be measured that first generates the digital signal is taken out from the memory, and the resistance value is calculated with the received digital signal to obtain the power consumption of the object to be measured, so that the control module can obtain the power consumption of the object to be measured according to the obtained The power consumption of the measured object obtains the corresponding fan control speed from the memory, and takes the power consumption as the working temperature of the object to be measured, and uses the working temperature corresponding to the power consumption to drive the fan according to the obtained fan control speed. The object under test dissipates heat. 5. The temperature detection method according to claim 4, wherein the electronic device is a server, and the baseboard management controller (BMC) in the server executes the operation based on the digital signal to obtain the temperature of the object to be measured The step of consuming power and the step of driving the fan to dissipate heat from the object under test. 6. The temperature detection method according to claim 4, wherein the electronic device is a computer, and the computer's central processing unit (CPU) executes the calculation based on the digital signal to obtain the power consumption of the object to be measured and the step of driving the fan to dissipate heat from the object under test.

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