Electrical equipment working temperature monitoring method and system

Abstract

The invention discloses a method and a system for monitoring the working temperature of electrical equipment. The method comprises the following steps: acquiring the environment temperature T of a key heating component on a mainboard in the electrical equipment; acquiring a real-time working current I of the electrical equipment; acquiring a CPU occupancy rate L of the MCU; the rotating speed F of a cooling fan on the mainboard is obtained; when I reaches the upper limit value of the preset current threshold value, high-load heat accumulation operation time Time is counted; and in the operation process of the electrical equipment, judging whether a triggering condition of a corresponding weight value adjustment mode is met or not, obtaining a temperature rise index theta by utilizing the weight values of T, I, L, F and Time, and judging whether to start a protection mechanism of the electrical equipment or not according to the theta and T. By monitoring the theta and the degree T, the working temperature of the electrical equipment can be reliably monitored, and the working reliability of the electrical equipment is ensured.

Description

Technical Field

[0001] This invention relates to the field of electrical equipment protection technology, and specifically to a method and system for monitoring the operating temperature of electrical equipment. Background Technology

[0002] When electrical equipment operates under high load for a long time or in harsh environments, the internal temperature of the electrical equipment will continue to rise, directly causing the internal electronic components to overheat and be damaged due to overheating. In severe cases, it may cause greater hazards such as fire.

[0003] Currently, only some key components of electrical equipment have over-temperature protection, but over-temperature damage to other components directly affects the normal use of electrical equipment. Therefore, a comprehensive and reliable monitoring method is needed to ensure the normal operation of electrical equipment. Summary of the Invention

[0004] To address the aforementioned technical problems, one objective of this invention is to provide a method for monitoring the operating temperature of electrical equipment. This method focuses on the ambient temperature T of key heat-generating components on the motherboard and monitors the temperature rise index Θ, which is related to ambient temperature T, total input current I, CPU utilization L, cooling fan speed F, and high-load heat accumulation time. The monitoring data is comprehensive, enabling reliable monitoring of the operating temperature of electrical equipment and ensuring the reliability of the equipment's operation.

[0005] To solve the above-mentioned technical problems, the present invention proposes the following technical solution: This application relates to a method for monitoring the operating temperature of electrical equipment, including: S1: Obtain the ambient temperature T of the key heat-generating components on the motherboard of the electrical equipment; S2: Obtain the real-time operating current I of the electrical equipment; S3: Obtain the CPU utilization rate L of the MCU on the motherboard; S4: Obtain the rotational speed F of the cooling fan on the motherboard; S5: When the real-time operating current I reaches the upper limit of the preset current threshold, the high-load heat accumulation operation time is started. S6: During the operation of electrical equipment, determine whether the triggering condition of the corresponding weight value adjustment mode is met. If yes, proceed to S7; otherwise, proceed to S8. S7: Obtain the corresponding adjustment weight value in the corresponding weight value adjustment mode, and use the preset relationship between the adjustment weight value and the temperature rise index Θ and T, I, L, F and Time to obtain the temperature rise index Θ, and proceed to S9; S8: T, I, L, F and Time maintain their corresponding initial weight values, and use the initial weight values ​​and preset relationships to obtain the temperature rise index Θ, and proceed to S9; S9: Determine whether to activate the protection mechanism of the electrical equipment based on the temperature rise index Θ and the ambient temperature T; Among them, T, I, L, F and Time each have their own initial weight values, which increase sequentially. Multiple weight adjustment modes are preset, and each set of weight adjustment modes corresponds to a trigger condition and also to a set of adjustment weight values ​​for T, I, L, F and Time. The adjustment weight values ​​increase sequentially.

[0006] In some embodiments of this application, the preset relationships are as follows: Θ= α*T_norm+β*I_norm+γ*L_norm+δ* (1 / F_norm)+ε*Time_norm; Where T_norm is the normalized value of ambient temperature T, I_norm is the normalized value of real-time operating current I, L_norm is the normalized value of CPU utilization L, F_norm is the normalized value of rotational speed F, and Time_norm is the normalized value of high-load heat accumulation operation time Time. α is the weight of T_norm, β is the weight of I_norm, γ is the weight of L_norm, δ is the weight of 1 / F_norm, and ε is the weight of Time_norm.

[0007] In some embodiments of this application, the weight value adjustment mode includes: In the first adjustment mode, when the first triggering condition is met, the corresponding adjustment weight value in the first adjustment mode is obtained, wherein the first triggering condition is that the increase rate of I_norm meets the first preset increase rate. In the first adjustment mode, β is increased based on its initial weight value, while α, γ, δ and ε are decreased based on their initial weight values, respectively. In the second adjustment mode, when the second triggering condition is met, the corresponding adjustment weight value in the second adjustment mode is obtained, wherein the second triggering condition is that F is continuously lower than the preset speed for a period of time; In the second adjustment mode, δ and ε are increased based on their initial weight values, while α, β and γ are decreased based on their initial weight values. In the third adjustment mode, when the third triggering condition is met, the corresponding adjustment weight value in the third adjustment mode is obtained, wherein the third triggering condition is that Time is higher than a preset time; In the third adjustment mode, α and ε are increased based on their initial weight values, while δ, β and γ are decreased based on their initial weight values.

[0008] In some embodiments of this application, the protection mechanism of the electrical equipment specifically includes: The first-level early warning and adjustment mechanism is activated when the temperature rise index Θ reaches the upper limit of the first temperature rise index threshold or the ambient temperature T reaches the upper limit of the first ambient temperature threshold. The MCU automatically restricts non-core functions or reduces the maximum operating frequency of the CPU, controls the cooling fan to run at the highest speed, and issues the first early warning prompt. The second-level early warning and adjustment mechanism is activated when the temperature rise index Θ reaches the upper limit of the second temperature rise index threshold or the ambient temperature T reaches the upper limit of the second ambient temperature threshold. The MCU further restricts non-core functions and issues a second early warning prompt. The alarm and disconnection mechanism is activated when the temperature rise index Θ reaches the upper limit of the third temperature rise index threshold or the ambient temperature T reaches the upper limit of the third ambient temperature threshold for a period of time. The MCU controls the disconnection of the power supply to the electrical equipment and controls the issuance of an alarm prompt. Among them, the first temperature rise index threshold, the second temperature rise index threshold and the third temperature rise index threshold increase in sequence, and the first ambient temperature threshold, the second ambient temperature threshold and the third ambient temperature threshold also increase in sequence.

[0009] In some embodiments of this application, the intensity of the first warning prompt, the second warning prompt, and the alarm prompt increases sequentially, indicating that the urgency of the prompt is upgraded sequentially.

[0010] In some embodiments of this application, when the temperature rise index Θ is detected to fall back to the temperature index safety threshold or the ambient temperature T falls back to the ambient temperature safety threshold and remains stable for a preset period of time, the MCU control automatically restores the function of the previously corresponding restriction.

[0011] This application also relates to an electrical equipment operating temperature monitoring system, comprising: A temperature acquisition unit is arranged around key heat-generating components on the mainboard of the electrical equipment to detect the ambient temperature T of the key heat-generating components. A current acquisition unit is used to acquire the real-time operating current I of the electrical equipment; The first acquisition unit is used to acquire the CPU utilization rate L of the MCU on the motherboard; The second acquisition unit is used to acquire the rotational speed F of the cooling fan on the motherboard; The timing unit is used to time the high-load heat accumulation operation time when the real-time operating current I reaches the upper limit of the preset current threshold. The weight value adjustment judgment unit determines whether the triggering conditions of the corresponding weight value adjustment mode are met during the operation of the electrical equipment. If yes, it obtains the corresponding adjustment weight value in the corresponding weight value adjustment mode; otherwise, T, I, L, F and Time retain their corresponding initial weight values. The temperature rise index acquisition unit acquires the temperature rise index Θ based on the preset relationship between the temperature rise index Θ and T, I, L, F and Time; The processing unit activates or deactivates the protection mechanism of the electrical equipment based on the temperature rise index Θ and the ambient temperature T. Among them, T, I, L, F and Time each have their own initial weight values, which increase sequentially. Multiple weight adjustment modes are preset, and each set of weight adjustment modes corresponds to a trigger condition and also to a set of adjustment weight values ​​for T, I, L, F and Time. The adjustment weight values ​​increase sequentially.

[0012] In some embodiments of this application, the preset relationships are as follows: Θ= α*T_norm+β*I_norm+γ*L_norm+δ* (1 / F_norm)+ε*Time_norm; Where T_norm is the normalized value of ambient temperature T, I_norm is the normalized value of real-time operating current I, L_norm is the normalized value of CPU utilization L, F_norm is the normalized value of rotational speed F, and Time_norm is the normalized value of high-load heat accumulation operation time Time. α is the weight of T_norm, β is the weight of I_norm, γ is the weight of L_norm, δ is the weight of 1 / F_norm, and ε is the weight of Time_norm.

[0013] In some embodiments of this application, the weight value adjustment mode includes: In the first adjustment mode, when the first triggering condition is met, the corresponding adjustment weight value in the first adjustment mode is obtained, wherein the first triggering condition is that the increase rate of I_norm meets the first preset increase rate. In the first adjustment mode, β is increased based on its initial weight value, while α, γ, δ and ε are decreased based on their initial weight values, respectively. In the second adjustment mode, when the second triggering condition is met, the corresponding adjustment weight value in the second adjustment mode is obtained, wherein the second triggering condition is that F is continuously lower than the preset speed for a period of time; In the second adjustment mode, δ and ε are increased based on their initial weight values, while α, β and γ are decreased based on their initial weight values. In the third adjustment mode, when the third triggering condition is met, the corresponding adjustment weight value in the third adjustment mode is obtained, wherein the third triggering condition is that Time is higher than a preset time; In the third adjustment mode, α and ε are increased based on their initial weight values, while δ, β and γ are decreased based on their initial weight values.

[0014] In some embodiments of this application, the protection mechanism of the electrical equipment specifically includes: The first-level early warning and adjustment mechanism is activated when the temperature rise index Θ reaches the upper limit of the first temperature rise index threshold or the ambient temperature T reaches the upper limit of the first ambient temperature threshold. The MCU automatically restricts non-core functions or reduces the maximum operating frequency of the CPU, controls the cooling fan to run at the highest speed, and issues the first early warning prompt. The second-level early warning and adjustment mechanism is activated when the temperature rise index Θ reaches the upper limit of the second temperature rise index threshold or the ambient temperature T reaches the upper limit of the second ambient temperature threshold. The MCU further restricts non-core functions and issues a second early warning prompt. The alarm and disconnection mechanism is activated when the temperature rise index Θ reaches the upper limit of the third temperature rise index threshold or the ambient temperature T reaches the upper limit of the third ambient temperature threshold for a period of time. The MCU controls the disconnection of the power supply to the electrical equipment and controls the issuance of an alarm prompt. Among them, the first temperature rise index threshold, the second temperature rise index threshold and the third temperature rise index threshold increase in sequence, and the first ambient temperature threshold, the second ambient temperature threshold and the third ambient temperature threshold also increase in sequence.

[0015] The embodiments of the present invention have the following advantages and beneficial effects: (1) In addition to considering the ambient temperature T, which directly reflects the overheating result, the monitoring of the operating temperature of electrical equipment also takes into account the operating parameters that affect the temperature, such as the operating current I, CPU occupancy rate L, speed F and high load heat accumulation time Time. This can identify potential overheating risks earlier before overheating results occur, achieve predictive protection, and improve the reliability of electrical equipment. (2) Introduce a multi-parameter fusion temperature rise index to avoid electrical equipment malfunctions caused by random errors at a single temperature measurement point, improve the accuracy and reliability of electrical equipment protection, and reduce the possibility of electrical equipment being affected by errors.

[0016] Other features and advantages of the present invention will become clearer after reading the detailed embodiments of the invention in conjunction with the accompanying drawings. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments of the present invention or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a flowchart of the electrical equipment operating temperature monitoring method proposed in this invention; Figure 2 This is a schematic diagram of the weight value adjustment mode in the electrical equipment operating temperature monitoring method proposed in this invention. Detailed Implementation

[0019] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0020] Based on the embodiments of this invention, all other embodiments obtained by those skilled in the art without inventive effort are within the scope of protection of this invention. In the description of this invention, it should be understood that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are only for the convenience of describing this invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention.

[0021] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances. In the description of the above embodiments, specific features, structures, materials, or characteristics can be combined in any suitable manner in one or more embodiments or examples.

[0022] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, unless otherwise stated, "a plurality of" means two or more.

[0023] To avoid accidental errors in a single temperature measurement point that could lead to malfunctions in electrical equipment, this application proposes a method and system for monitoring the operating temperature of electrical equipment. In addition to monitoring the ambient temperature of key heat-generating components on the motherboard that directly affect overheating results, the system also integrates real-time operating current I, CPU utilization L, cooling fan speed F, and high-load heat accumulation time that affect temperature. This allows for early identification of potential risks affecting overheating results and timely implementation of protective mechanisms to ensure the reliability of electrical equipment operation.

[0024] In some embodiments of this application, the electrical equipment operating temperature monitoring method is implemented by an electrical equipment operating temperature monitoring system. The following description, in conjunction with the electrical equipment operating temperature monitoring system, will describe the electrical equipment operating temperature monitoring method. (See also...) Figure 1 .

[0025] S1: Obtain the ambient temperature T of the key heat-generating components on the motherboard of the electrical equipment.

[0026] In some embodiments of this application, the electrical equipment operating temperature monitoring system includes a temperature acquisition unit.

[0027] This temperature acquisition unit is used to acquire the ambient temperature T of key heat-generating components (such as CPU, power chip, power module, etc.) on the motherboard of electrical equipment.

[0028] In some embodiments of this application, the temperature acquisition unit may include multiple temperature-sensing resistors, which are distributed around key heat-generating components to directly and accurately detect the operating temperature of the electrical equipment.

[0029] The ambient temperature T can be obtained by averaging the temperatures collected by multiple temperature measuring resistors, or by taking the maximum temperature among the multiple temperature measuring resistors.

[0030] The ambient temperature T reflects the current hottest temperature level of the electronic device. If the ambient temperature T is too high, it will affect the normal operation of the powered components on the motherboard.

[0031] In some embodiments of this application, in order to introduce the temperature rise index Θ, the ambient temperature T is normalized to obtain the normalized value T_norm: T_norm = T / first reference value.

[0032] In some embodiments of this application, the first reference value is determined based on laboratory thermal testing experience, for example, 105°C.

[0033] S2: Obtain the real-time operating current I of the electrical equipment.

[0034] In some embodiments of this application, the electrical equipment operating temperature monitoring system further includes a current acquisition unit.

[0035] The current acquisition unit is used to acquire the real-time operating current I (i.e., the total input current) of the electrical equipment. In some embodiments of this application, the current acquisition unit can be a Hall current sensor arranged on the motherboard or a current sampling circuit.

[0036] The operating current I can reflect the real-time load and heat generation rate of electrical equipment. It is the main source of heat generation, and its changes often rise significantly before the temperature. Therefore, the detection of current increase can help identify temperature increase in advance and achieve predictive protection for electrical equipment.

[0037] In some embodiments of this application, in order to introduce the temperature rise index Θ, the real-time operating current I is normalized to obtain the normalized value I_norm: I_norm = I / second reference value.

[0038] In some embodiments of this application, the second reference value is determined based on laboratory thermal testing experience, for example, 2.0A.

[0039] S3: Get the CPU utilization rate L of the MCU on the motherboard.

[0040] In some embodiments of this application, the electrical equipment operating temperature monitoring system further includes a first acquisition unit for acquiring the CPU utilization rate L of the MCU on the motherboard.

[0041] The CPU utilization rate L reflects the computing intensity of the data processing core MCU, which is related to the CPU load, and the CPU load is related to the heat generated by the CPU chip.

[0042] In some embodiments of this application, in order to introduce the temperature rise index Θ, the CPU utilization rate L is normalized to obtain the normalized value L_norm: L_norm=L / 100.

[0043] S4: Get the rotation speed F of the cooling fan on the motherboard.

[0044] In some embodiments of this application, the electrical equipment operating temperature monitoring system further includes a second acquisition module for acquiring the rotational speed F of the cooling fan on the motherboard.

[0045] The rotational speed F reflects the active heat dissipation capacity of electrical equipment, and its failure will increase the risk of high temperature in electrical equipment.

[0046] In some embodiments of this application, the second acquisition module can read back the rotational speed F through the fan drive chip.

[0047] In some embodiments of this application, in order to introduce the temperature rise index Θ, the rotational speed F is normalized to obtain the normalized value F_norm: F_norm = F / fan full speed, for example, the fan full speed can be 6000 RPM.

[0048] S5: When the real-time operating current I reaches the upper limit of the preset current threshold, the high-load heat accumulation operation time is recorded.

[0049] In some embodiments of this application, the electrical equipment operating temperature monitoring system further includes a timing unit, which is used to time the high-load heat accumulation operation time when the real-time operating current I reaches the upper limit of the preset current threshold.

[0050] The preset current threshold can be a specific preset value or a preset range. For example, the preset current threshold is 1.4A, that is, when the real-time operating current I is greater than 1.4A, the high-load heat accumulation operation time is timed.

[0051] This timing unit can select the MCU's internal timer.

[0052] The high-load heat accumulation operation time reflects the temperature rise inertia caused by long-term heat accumulation.

[0053] In some embodiments of this application, in order to introduce the temperature rise index Θ, the high-load heat accumulation operation time Time is normalized to obtain the normalized value Time_norm: Time_norm=Time / third benchmark value, where the third benchmark value can be a preset high-load operation time, such as 20 minutes, 30 minutes, etc.

[0054] When the third baseline value is set to 30 minutes, Time_norm = Time / third baseline value = Time / 1800s.

[0055] S6: During the operation of electrical equipment, determine whether the triggering conditions of the corresponding weight value adjustment mode are met. If yes, proceed to S7; otherwise, proceed to S8.

[0056] In some embodiments of this application, the electrical equipment operating temperature monitoring system further includes an adjustment weight value judgment unit, which is used to determine whether the triggering conditions of the corresponding weight value adjustment mode are met.

[0057] See below. Figure 2The triggering conditions for the weight value adjustment mode will be described first.

[0058] In some embodiments of this application, considering the influence of the parameters T, I, L, F and Time on temperature as described above, a multi-parameter fusion temperature rise index model is established using the normalized parameters T_norm, I_norm, L_norm, F_norm and Time_norm to obtain the temperature rise index Θ.

[0059] The temperature rise index model can be expressed as follows (1).

[0060] Θ=α*T_norm+β*I_norm+γ*L_norm+δ*(1 / F_norm)+ε*Time_norm (1).

[0061] Where α, β, γ, δ and ε are the weights corresponding to T_norm, I_norm, L_norm, F_norm and Time_norm, respectively.

[0062] The initial weights of α, β, γ, δ, and ε were determined based on laboratory thermal testing experience and the importance of the parameters.

[0063] In some embodiments of this application, T_norm is a direct reflection of the overheating result and is the most reliable and final judgment basis. Therefore, the weight α has the highest weight value, and the weight β has the second highest weight value.

[0064] Considering that high load does not necessarily lead to high current, the weight value of γ is lower than that of β.

[0065] Cooling fans are heat dissipation devices for electronic equipment. Their failure will increase the risk of electrical equipment. That is, the lower the speed, the higher the risk. Therefore, in formula (1), the parameter 1 / F_norm is used, and the weight value of weight δ is lower than the weight value of weight γ.

[0066] Time is a slowly varying, cumulative parameter; therefore, the weight ε has the lowest weight value, primarily to prevent chronic overheating.

[0067] The initial weight values ​​for α, β, γ, δ and ε are set as {α=0.40, β=0.30, γ=0.15, δ=0.10, ε=0.05}.

[0068] In some embodiments of this application, multiple weight value adjustment modes are preset. Each weight value adjustment mode corresponds to a trigger condition and a set of weight values ​​of α, β, γ, δ and ε are obtained. When the real-time data meets the corresponding trigger condition, a set of weight values ​​of α, β, γ, δ and ε in the weight value adjustment mode corresponding to the trigger condition is obtained.

[0069] Among them, the weight values ​​of α, β, γ, δ and ε in the set decrease in that order.

[0070] If the real-time data does not meet the corresponding triggering conditions, the set of weight values ​​for α, β, γ, δ, and ε will remain the initial weight values.

[0071] In some embodiments of this application, there may be multiple weight value adjustment modes, such as three.

[0072] The weight adjustment modes include the first adjustment mode, the second adjustment mode, and the third adjustment mode.

[0073] In some embodiments of this application, the first adjustment mode (i.e., the high current warning mode) corresponds to the first triggering condition and corresponds to the first set of weight values ​​of α, β, γ, δ and ε.

[0074] The first trigger condition can be that the rise rate of I_norm meets the first preset rise rate.

[0075] The first preset rise rate is preset, for example, I_norm rises from 0.5 to 0.9 in 1 second.

[0076] This rapid increase in I_norm indicates that the heat production power is about to surge. Although the temperature has not yet soared, the risk is extremely high. Therefore, it is necessary to obtain the first set of weight values ​​for α, β, γ, δ and ε at this time.

[0077] In the first set of weight values ​​for α, β, γ, δ, and ε, the weight value of β increases from the initial weight value, for example, from the initial weight value of 0.3 to 0.5.

[0078] To ensure that the sum of the weights of α, β, γ, δ and ε is 1, the weights of α, γ, δ and ε are reduced respectively. For example, α is reduced from 0.4 to 0.3, γ is reduced from 0.15 to 0.1, δ is reduced from 0.1 to 0.07, and ε is reduced from 0.05 to 0.03.

[0079] The temperature rise index Θ will mainly reflect drastic changes in current, making it easier for users to take timely measures to avoid a real temperature surge.

[0080] In some embodiments of this application, the second adjustment mode (i.e., the heat dissipation failure mode) corresponds to the second triggering condition and corresponds to the second set of weight values ​​of α, β, γ, δ and ε.

[0081] The second trigger condition can be that F remains below the preset speed for a certain period of time.

[0082] Both the preset speed and the preset time are preset. For example, the preset speed is 4000 RPM and the preset time is 5 seconds.

[0083] When the rotational speed F decreases, the cooling system may malfunction, resulting in a significant drop in cooling efficiency and a greatly increased risk of heat accumulation. Therefore, it is necessary to obtain a second set of weight values ​​for α, β, γ, δ, and ε.

[0084] In the second set of weight values ​​for α, β, γ, δ, and ε, the weight value of δ increases from the initial weight value; for example, δ increases from the initial weight value of 0.1 to 0.4.

[0085] Meanwhile, due to insufficient heat dissipation, the weight value of Time_norm corresponding to the heat accumulation effect should also be increased. Therefore, ε increases from the initial weight value of 0.05 to 0.15.

[0086] To ensure that the sum of the weights of α, β, γ, δ and ε is 1, the weights of α, β and γ are reduced respectively. For example, α is reduced from 0.4 to 0.25, β is reduced from 0.3 to 0.15 and γ is reduced from 0.15 to 0.05.

[0087] In this situation, even if the current temperature and current are not high, the temperature rise index Θ will rise rapidly due to the increased weight of the heat dissipation and time terms.

[0088] In some embodiments of this application, the third-year adjustment mode (i.e., the heat accumulation warning mode) corresponds to the third triggering condition and the third set of weight values ​​of α, β, γ, δ and ε.

[0089] The third trigger condition can be that Time lasts for a period of time.

[0090] The time period is preset. For example, if the time period is 24 minutes, Time is greater than 24 minutes (that is, Time_norm > (24*60 / 1800)).

[0091] With a long heat accumulation time, the overall temperature inside the electronic device is high and the heat capacity is saturated. Any additional heat may cause the temperature to reach critical point quickly. Therefore, it is necessary to obtain a third set of weight values ​​for α, β, γ, δ and ε.

[0092] In the third set of weight values ​​for α, β, γ, δ and ε, the weight value of ε increases from the initial weight value; for example, ε increases from the initial weight value of 0.05 to 0.2.

[0093] At the same time, in order to make the absolute temperature more sensitive, the weight value of α should also be increased. Therefore, α is increased from the initial weight value of 0.4 to 0.45.

[0094] To ensure that the sum of the weights of α, β, γ, δ and ε is 1, the weights of β, γ and δ are reduced respectively. For example, β is reduced from 0.3 to 0.2, γ is reduced from 0.15 to 0.1, and δ is reduced from 0.1 to 0.05.

[0095] In this situation, the system is more sensitive to small increases in temperature and duration, and the temperature rise index Θ will also increase with small increases in temperature and duration, making it easier to trigger protection actions and prevent unexpected overheating after long-term high-temperature operation.

[0096] S7: Obtain the corresponding adjustment weight value in the corresponding weight value adjustment mode, and use the preset relationship between the adjustment weight value and the temperature rise index Θ and T, I, L, F and Time to obtain the temperature rise index Θ, and proceed to S9.

[0097] In some embodiments of this application, the electrical equipment operating temperature monitoring system further includes a temperature rise index acquisition unit, which is used to acquire the temperature rise index Θ.

[0098] As described in S8, during the real-time operation of electrical equipment, the set of weight values ​​of T_norm, I_norm, L_norm, F_norm and Time_norm can be obtained, and then the temperature rise index Θ is calculated using formula (1).

[0099] The temperature rise index Θ integrates multiple parameters that affect temperature, enabling comprehensive monitoring of the operating temperature of electrical equipment. These parameters are indirect parameters that affect temperature, and their changes influencing temperature rise occur earlier than those of direct parameters. Therefore, the temperature rise index Θ, which integrates these parameters, can be used to predict the operating temperature of electrical equipment, thereby achieving predictive protection for electrical equipment.

[0100] S8: T, I, L, F and Time maintain their corresponding initial weight values, and use the initial weight values ​​and preset relationships to obtain the temperature rise index Θ, and proceed to S9; As mentioned above, both S7 and S8 are for obtaining the temperature rise index Θ. The difference is that when the trigger condition is met, the adjusted weight value needs to be obtained to calculate the temperature rise index Θ, so as to more accurately monitor the operating temperature of the electrical equipment based on the real-time changing data, thereby detecting the situation affecting the temperature rise in advance and implementing predictive protection actions. When the trigger condition is not met, that is, when the electrical equipment is operating normally, the initial weight value is maintained to continuously monitor the normal operation of the electrical equipment.

[0101] S9: Determine whether to activate the protection mechanism of electrical equipment based on the temperature rise index Θ and the ambient temperature T.

[0102] In some embodiments of this application, the electrical equipment operating temperature monitoring system further includes a processing unit for determining whether to activate the electrical equipment's protection mechanism. To ensure the safety and reliability of electrical equipment, the protection mechanism of the electrical equipment will be activated when the temperature affects the components in the electrical equipment; otherwise, the electrical equipment will continue to operate normally.

[0103] In some embodiments of this application, in addition to the direct parameter of ambient temperature T, the conditions affecting the operational reliability of electronic equipment also include the indirect parameter of temperature rise index Θ as described above. Therefore, the protection mechanism of the electrical equipment is determined by comprehensively considering both ambient temperature T and temperature rise index Θ.

[0104] In some embodiments of this application, the protection mechanism employs a hierarchical protection mechanism, aiming to protect the electrical equipment while maintaining its basic functions.

[0105] In some embodiments of this application, the protection mechanism specifically includes a first-level early warning and adjustment mechanism, a second-level early warning and adjustment mechanism, and an alarm and disconnection mechanism.

[0106] When the temperature rise index Θ reaches the upper limit of the first temperature rise index threshold or the ambient temperature T reaches the upper limit of the first ambient temperature threshold, the first-level warning and adjustment mechanism is activated. The MCU automatically restricts non-core functions or reduces the maximum operating frequency of the CPU, controls the cooling fan to run at the highest speed, and issues the first warning prompt.

[0107] The first temperature rise index threshold and the first ambient temperature threshold mentioned above can both be a specific set value or a set range. For example, the first temperature rise index threshold can be set to Θ1 and the first ambient temperature threshold can be set to T1.

[0108] When the temperature rise index Θ reaches the upper limit of the first temperature rise index threshold, that is, when Θ is greater than or equal to Θ1, the first-level warning and adjustment mechanism will be executed.

[0109] When the ambient temperature T reaches the upper limit of the first ambient temperature threshold, that is, when T is greater than or equal to T1, the first-level warning and adjustment mechanism will be executed.

[0110] This first-level early warning and adjustment mechanism can actively cool down the equipment by adjusting internal parameters. It is expected that the system can recover on its own under this mechanism, and users may not perceive any performance changes or the impact may be minimal.

[0111] Furthermore, this first warning can gently remind the user that the device is in a high-temperature optimized operating state through an indicator light (e.g., changing from green to yellow) or a slight buzzing sound.

[0112] If the ambient temperature T or temperature rise index Θ continues to rise or fails to decrease effectively after the first-level warning and adjustment mechanism, the second-level warning and adjustment mechanism will be activated.

[0113] That is, when the temperature rise index Θ reaches the upper limit of the second temperature rise index threshold, or the ambient temperature T reaches the upper limit of the second ambient temperature threshold, the second-level warning and adjustment mechanism is activated. The MCU further restricts non-core functions (for example, when the electronic device is a display device, the screen brightness can be reduced) and controls the issuance of a second warning prompt.

[0114] The second temperature rise index threshold and the second ambient temperature threshold mentioned above can both be a specific set value or a set range. For example, the second temperature rise index threshold can be set to Θ2 and the second ambient temperature threshold can be set to T2.

[0115] When the temperature rise index Θ reaches the upper limit of the second temperature rise index threshold, that is, when Θ is greater than or equal to Θ2, the second-level warning and adjustment mechanism will be executed.

[0116] When the ambient temperature T reaches the upper limit of the second ambient temperature threshold, that is, when T is greater than or equal to T2, the second-level warning and adjustment mechanism will be executed.

[0117] This second-level early warning and adjustment mechanism can maintain the basic working capacity of electrical equipment to the maximum extent while ensuring that the equipment is not damaged, and give the system a final chance to recover by adjusting internal parameters.

[0118] Furthermore, this second warning prompt can clearly remind users to pay attention immediately through clear audible and visual alarms (such as flashing lights or loud beeping sounds).

[0119] If the ambient temperature T or temperature rise index Θ continues to rise or fails to decrease effectively after the second-level warning and adjustment mechanism, the temperature or temperature rise index may reach a dangerous critical value. At this time, the alarm and disconnection mechanism will be activated to perform the final protection.

[0120] When the temperature rise index Θ reaches the upper limit of the third temperature rise index threshold, or the ambient temperature T reaches the upper limit of the third ambient temperature threshold and remains so for a period of time, the third-level early warning and regulation mechanism is activated. The MCU controls the disconnection of power supply to the electrical equipment and issues an alarm.

[0121] The aforementioned third temperature rise index threshold and third ambient temperature threshold can both be a specific set value or a set range. For example, the third temperature rise index threshold can be set to Θ3 and the third ambient temperature threshold can be set to T3.

[0122] When the temperature rise index Θ reaches the upper limit of the third temperature rise index threshold, that is, when Θ is greater than or equal to Θ3, an alarm and disconnection mechanism will be executed.

[0123] When the ambient temperature T reaches the upper limit of the third ambient temperature threshold, that is, when T is greater than or equal to T3, an alarm and disconnection mechanism will be executed.

[0124] This alarm and disconnect mechanism can prevent equipment damage and fire risks by disconnecting the power supply to electrical equipment.

[0125] Furthermore, the alarm can alert the user that the power to the electrical equipment has been cut off through continuous audible and visual alarms (e.g., continuous flashing lights and continuous beeping).

[0126] The graded protection mechanism described above can minimize interference with the normal use of electrical equipment while ensuring that the equipment is not damaged, thus avoiding the inconvenience caused by frequent standby or shutdown.

[0127] In some embodiments of this application, the first temperature rise index threshold, the second temperature rise index threshold, and the third temperature rise index threshold are increased sequentially, as are the first ambient temperature threshold, the second ambient temperature threshold, and the third ambient temperature threshold.

[0128] In some embodiments of this application, a relay can be set between the power supply terminal of the motherboard of the electrical equipment and the live power line. When the alarm and disconnection mechanism is executed, the MCU sends a control signal to the relay to disconnect the relay and realize the power cut-off.

[0129] As described above, when the system enters the first or second level warning and regulation mechanism due to excessive temperature, the MCU will continuously monitor the ambient temperature T and the temperature rise index Θ.

[0130] Once the ambient temperature T drops to or below the preset safe threshold for ambient temperature, or the temperature rise index Θ drops to or below the preset safe threshold for temperature rise index and remains stable for a period of time (e.g., 3 minutes), the system will automatically and gradually restore the previously restricted functions and performance until the device is fully restored to normal working mode. This eliminates the need for manual restart by the user, resulting in a high degree of intelligence and reduced user maintenance costs.

[0131] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A method of monitoring the operating temperature of an electrical device, characterized by, Comprise: S1: obtain the ambient temperature T of the key heating components on the mainboard in the electrical equipment; S2: obtain the real-time working current I of the electrical equipment; S3: obtain the CPU occupancy rate L of the MCU on the mainboard; S4: obtain the speed F of the cooling fan on the mainboard; S5: when the real-time working current I reaches the preset current threshold upper limit value, the high load heat accumulation running time Time is counted; S6: during the operation of the electrical equipment, it is judged whether the trigger condition of the corresponding weight value adjustment mode is met, if yes, go to S7, if not, go to S8; S7: obtain the corresponding adjustment weight value in the corresponding weight value adjustment mode, and obtain the temperature rise index Θ by using the adjustment weight value and the preset relationship between T, I, L, F and Time, and go to S9; S8: T, I, L, F and Time keep the corresponding initial weight value, and obtain the temperature rise index Θ by using the initial weight value and the preset relationship, and go to S9; S9: according to the temperature rise index Θ and the ambient temperature T, it is judged whether to start the protection mechanism of the electrical equipment; Wherein, T, I, L, F and Time each have corresponding initial weight value and increase in turn; A plurality of weight value adjustment modes are preset, and a group of weight value adjustment modes corresponds to a trigger condition and also corresponds to a group of T, I, L, F and Time adjustment weight values, and a group of adjustment weight values increase in turn.

2. The method of claim 1, wherein, The preset relationship is as follows: Θ= α*T_norm+β*I_norm+γ*L_norm+δ* (1 / F_norm)+ε*Time_norm; Wherein, T_norm is the normalized value of the ambient temperature T, I_norm is the normalized value of the real-time working current I, L_norm is the normalized value of the CPU occupancy rate L, F_norm is the normalized value of the speed F, Time_norm is the normalized value of the high load heat accumulation running time Time; α is the weight of T_norm, β is the weight of I_norm, γ is the weight of L_norm, δ is the weight of 1 / F_norm, and ε is the weight of Time_norm.

3. The method of claim 2, wherein the step of monitoring the temperature of the electrical device comprises the step of: The weight value adjustment mode comprises: The first adjustment mode, when the first trigger condition is met, the corresponding adjustment weight value in the first adjustment mode is obtained, wherein the first trigger condition is that the rising rate of I_norm meets the first preset rising rate; In the first adjustment mode, β increases on the basis of its initial weight value, and α, γ, δ and ε respectively decrease on the basis of their initial weight values; The second adjustment mode, when the second trigger condition is met, the corresponding adjustment weight value in the second adjustment mode is obtained, wherein the second trigger condition is that F continuously lower than the preset speed for a period of time; In the second adjustment mode, δ and ε respectively increase on the basis of their initial weight values, and α, β and γ respectively decrease on the basis of their initial weight values; The third adjustment mode, when the third trigger condition is met, the corresponding adjustment weight value in the third adjustment mode is obtained, wherein the third trigger condition is that Time is higher than the preset time; In the third adjustment mode, α and ε are increased on the basis of their initial weight values, and δ, β and γ are reduced on the basis of their initial weight values.

4. The method of claim 1, wherein the step of monitoring the temperature of the electrical device comprises the step of: The protection mechanism of the electrical equipment specifically comprises: The first graded early warning and adjustment mechanism, when the temperature rise index Θ reaches the upper limit value of the first temperature rise index threshold or the ambient temperature T reaches the upper limit value of the first ambient temperature threshold, the MCU automatically limits the non-core function or reduces the CPU maximum running frequency, controls the cooling fan to run at the highest speed, and controls the first early warning prompt to be sent out; The second graded early warning and adjustment mechanism, when the temperature rise index Θ reaches the upper limit value of the second temperature rise index threshold or the ambient temperature T reaches the upper limit value of the second ambient temperature threshold, the MCU further limits the non-core function, and controls the second early warning prompt to be sent out; The alarm and disconnection mechanism, when the temperature rise index Θ reaches the upper limit value of the third temperature rise index threshold or the ambient temperature T reaches the upper limit value of the third ambient temperature threshold and lasts for a period of time, the MCU controls the power supply to the electrical equipment to be disconnected, and controls the alarm prompt to be sent out; Wherein, the first temperature rise index threshold, the second temperature rise index threshold and the third temperature rise index threshold increase in turn, and the first ambient temperature threshold, the second ambient temperature threshold and the third ambient temperature threshold also increase in turn.

5. The method of claim 4, wherein the step of monitoring the temperature of the electrical device comprises the step of: The intensity of the first early warning prompt, the second early warning prompt and the alarm prompt increases in turn.

6. The electrical equipment working temperature monitoring method according to claim 4, characterized in that, When the temperature rise index Θ falls back to the temperature index safety threshold or the ambient temperature T falls back to the ambient temperature safety threshold and below and stabilizes for a preset period of time, the MCU controls the functions previously limited to be automatically restored.

7. An electrical equipment operating temperature monitoring system characterized by, Comprise: The temperature acquisition unit is arranged around the key heating components on the mainboard in the electrical equipment, and is used for detecting the ambient temperature T of the key heating components; The current acquisition unit is used for acquiring the real-time working current I of the electrical equipment; The first acquisition unit is used for acquiring the CPU occupancy rate L of the MCU on the mainboard; The second acquisition unit is used for acquiring the rotating speed F of the cooling fan on the mainboard; The timing unit is used for timing the high-load heat accumulation running time Time when the real-time working current I reaches the upper limit value of the preset current threshold; The adjustment weight value judgment unit judges whether the trigger condition of the corresponding weight value adjustment mode is met in the electrical equipment running process, if yes, the corresponding adjustment weight value in the corresponding weight value adjustment mode is acquired, if not, T, I, L, F and Time remain the corresponding initial weight values; The temperature rise index acquisition unit acquires the temperature rise index Θ according to the preset relationship between the temperature rise index Θ and T, I, L, F and Time; The processing unit starts or does not start the protection mechanism of the electrical equipment according to the temperature rise index Θ and the ambient temperature T; Wherein, T, I, L, F and Time each have a corresponding initial weight value and increase in turn; A plurality of weight value adjustment modes are preset, and one set of weight value adjustment modes corresponds to one trigger condition and also corresponds to a set of adjustment weight values of T, I, L, F and Time, and the set of adjustment weight values are sequentially increased.

8. The electrical equipment operating temperature monitoring system of claim 7, wherein, The preset relationship is specifically as follows: Θ= α*T_norm+β*I_norm+γ*L_norm+δ* (1 / F_norm)+ε*Time_norm; Wherein, T_norm is the normalized value of the ambient temperature T, I_norm is the normalized value of the real-time working current I, L_norm is the normalized value of the CPU occupancy rate L, F_norm is the normalized value of the rotating speed F, and Time_norm is the normalized value of the high-load heat accumulation running time Time. α is the weight of T_norm, β is the weight of I_norm, γ is the weight of L_norm, δ is the weight of 1 / F_norm, and ε is the weight of Time_norm.

9. The electrical equipment operating temperature monitoring system according to claim 8, characterized in that, The weight value adjustment mode includes: A first adjustment mode, when a first trigger condition is met, the corresponding adjustment weight value in the first adjustment mode is obtained, wherein the first trigger condition is that the rising rate of I_norm meets a first preset rising rate; In the first adjustment mode, β is increased on the basis of its initial weight value, and α, γ, δ and ε are respectively reduced on the basis of their initial weight values; A second adjustment mode, when a second trigger condition is met, the corresponding adjustment weight value in the second adjustment mode is obtained, wherein the second trigger condition is that F continuously falls below a preset rotating speed for a period of time; In the second adjustment mode, δ and ε are respectively increased on the basis of their initial weight values, and α, β and γ are respectively reduced on the basis of their initial weight values; A third adjustment mode, when a third trigger condition is met, the corresponding adjustment weight value in the third adjustment mode is obtained, wherein the third trigger condition is that Time is higher than a preset time; In the third adjustment mode, α and ε are respectively increased on the basis of their initial weight values, and δ, β and γ are respectively reduced on the basis of their initial weight values.

10. The electrical equipment operating temperature monitoring system of claim 6, wherein, The protection mechanism of the electrical equipment specifically includes: A first hierarchical early warning and adjustment mechanism, when the temperature rise index Θ reaches the upper limit value of the first temperature rise index threshold or the ambient temperature T reaches the upper limit value of the first ambient temperature threshold, the first hierarchical early warning and adjustment mechanism is entered, the MCU automatically limits the non-core function or reduces the CPU highest running frequency, controls the cooling fan to run at the highest speed, and controls to issue a first early warning prompt; A second hierarchical early warning and adjustment mechanism, when the temperature rise index Θ reaches the upper limit value of the second temperature rise index threshold or the ambient temperature T reaches the upper limit value of the second ambient temperature threshold, the second hierarchical early warning and adjustment mechanism is entered, the MCU further limits the non-core function, and controls to issue a second early warning prompt; When the temperature rise index Θ reaches the upper limit value of the third temperature rise index threshold value, or the ambient temperature T reaches the upper limit value of the third ambient temperature threshold value, and for a period of time, the alarm and disconnection mechanism is entered, the MCU controls the power supply to the electrical equipment to be disconnected, and controls the alarm prompt to be issued; Wherein, the first temperature rise index threshold value, the second temperature rise index threshold value and the third temperature rise index threshold value increase in turn, and the first ambient temperature threshold value, the second ambient temperature threshold value and the third ambient temperature threshold value also increase in turn.

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