Fault detection method and device for heat preservation equipment and heat preservation equipment

Abstract

The invention discloses a fault detection method and device for heat preservation equipment and the heat preservation equipment, and the method comprises the steps: controlling the heat preservation equipment to enter a function detection mode when an opening instruction is received; in the function detection mode, after the heating device is controlled to heat for a first preset time at a first heating power, the heating device is controlled to stop heating until the time reaches a second preset time, and a first temperature difference between the highest temperature and the lowest temperature detected by the temperature detection device within the first preset time and the second preset time is recorded; when the first temperature difference is smaller than or equal to the preset temperature difference threshold value, the heating device is controlled to heat for a third preset time at second heating power, and a second temperature difference between the highest temperature and the lowest temperature detected by the temperature detection device within the third preset time is recorded; when the second temperature difference is smaller than or equal to the temperature difference threshold value, determining that the temperature detection device and the heat preservation equipment have a separation fault; the method has the advantages of low detection cost and high accuracy.

Description

Technical Field

[0001] The present invention relates to the technical field of electronic equipment, and in particular to a fault detection method and device for heat preservation equipment, and the heat preservation equipment. Background Art

[0002] The medical gel thermos is an insulation container designed specifically for medical environments. It is mainly used to heat and keep medical gels, nutrient solutions or other medical liquids that require constant temperature. Its core feature is the use of medical-grade materials and gel insulation technology to ensure safety and insulation performance.

[0003] Most medical gel thermoses use NTC (Negative Temperature Coefficient) thermistors to detect the temperature of the cup body and regulate the temperature by controlling the heating power. However, after long-term use, NTC thermistors may short-circuit, open, or detach from the cup body, causing the thermos to lose temperature control and potentially cause heat damage. Currently, there is a lack of effective methods to detect various thermos faults without increasing costs. Summary of the Invention

[0004] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, one object of the present invention is to provide a method for detecting faults in thermal insulation equipment. This method can effectively determine whether the thermal insulation equipment has failed by simply using the temperature change curve without increasing the cost of the detection equipment, thus having the advantages of low detection cost and high accuracy.

[0005] Therefore, a second object of the present invention is to provide a fault detection device for heat preservation equipment.

[0006] To this end, the third object of the present invention is to provide a heat preservation device.

[0007] To this end, a fourth object of the present invention is to provide an electronic device.

[0008] To this end, a fifth object of the present invention is to provide a computer-readable storage medium.

[0009] To achieve the above-mentioned objectives, an embodiment of the first aspect of the present invention discloses a fault detection method for a heat preservation device, wherein the heat preservation device is provided with a heating device and a temperature detection device, and the fault detection method for the heat preservation device includes: when a start instruction is received, controlling the heat preservation device to enter a function detection mode; in the function detection mode, controlling the heating device to heat for a first preset time with a first heating power, and then controlling the heating device to stop heating until the time reaches a second preset time, and recording a first temperature difference between the highest temperature and the lowest temperature detected by the temperature detection device during the first preset time and the second preset time; when the first temperature difference is less than or equal to a preset temperature difference threshold, controlling the heating device to heat for a third preset time with a second heating power, and recording a second temperature difference between the highest temperature and the lowest temperature detected by the temperature detection device during the third preset time, wherein the second heating power is less than the first heating power; when the second temperature difference is less than or equal to the temperature difference threshold, determining that a disconnection fault has occurred between the temperature detection device and the heat preservation device.

[0010] According to the fault detection method for a heat preservation device of an embodiment of the present invention, when a start command is received, the heat preservation device is controlled to enter a function detection mode to ensure that the function is normal before each heating starts, thereby ensuring the safety of the heat preservation device. In the function detection mode, after controlling the heating device to heat at a first heating power for a first preset time, the heating device is controlled to stop heating until the time reaches a second preset time, and a first temperature difference between the highest temperature and the lowest temperature detected by the temperature detection device during the first preset time and the second preset time is recorded. When the first temperature difference is less than or equal to a preset temperature difference threshold, it indicates that the heat preservation device may have a fault. To avoid false detection, the heating device is first controlled to heat at a second heating power for a third preset time, and then a second temperature difference between the highest temperature and the lowest temperature detected by the temperature detection device during the third preset time is recorded. When the second temperature difference is less than or equal to the temperature difference threshold, it indicates that both the first temperature difference and the second temperature difference are small and do not conform to the temperature change curve of normal heating and heat dissipation. Therefore, it can be accurately determined that a disconnection fault has occurred between the temperature detection device and the heat preservation device. In this way, without increasing the cost of the detection equipment, only the temperature change curve can be used to effectively determine whether the heat preservation device has a fault, which has the advantages of low detection cost and high accuracy.

[0011] In addition, the fault detection method for heat preservation equipment according to the above embodiment of the present invention may also have the following additional technical features: In some examples, the fault detection method for the heat preservation equipment further includes: when the first temperature difference or the second temperature difference is greater than the temperature difference threshold, determining that the temperature detection device is functioning normally.

[0012] In some examples, the fault detection method for the heat preservation equipment further includes: when it is determined that the temperature detection device is functioning normally, controlling the heat preservation equipment to enter a normal heating mode, wherein in the normal heating mode, the heating device is controlled to heat at the first heating power.

[0013] In some examples, the method for detecting a fault in the heat preservation device further includes: in the normal heating mode, determining a fault condition of the heat preservation device based on the temperature continuously detected by the temperature detection device within a fourth preset time.

[0014] In some examples, in the normal heating mode, the fault condition of the heat preservation device is determined based on the temperature continuously detected by the temperature detection device within a fourth preset time, including: fitting and determining a temperature change straight line based on the temperature continuously detected by the temperature detection device within the fourth preset time; when the slope of the temperature change straight line is less than a preset slope threshold, it is determined that a disconnection fault has occurred between the temperature detection device and the heat preservation device.

[0015] In some examples, the method for detecting a fault in the heat preservation device further includes: determining a fault condition of the heat preservation device based on the temperature detected by the temperature detection device in the function detection mode and the normal heating mode.

[0016] In some examples, in the function detection mode and the normal heating mode, the fault condition of the insulation device is determined based on the temperature detected by the temperature detection device, including: when the temperature detected by the temperature detection device is greater than a preset first temperature threshold, it is determined that the temperature detection device has a short circuit fault.

[0017] In some examples, in the function detection mode and the normal heating mode, the fault condition of the insulation device is determined based on the temperature detected by the temperature detection device, including: when the temperature detected by the temperature detection device is lower than a preset second temperature threshold, determining that the temperature detection device has a short circuit fault.

[0018] In some examples, the method for detecting a fault in a heat preservation device further includes: when it is determined that the heat preservation device has failed, outputting different alarm signals according to the type of failure.

[0019] In some examples, the heat preservation device fault detection method further includes: when it is determined that the heat preservation device has failed, controlling the heating device to stop working.

[0020] To achieve the above-mentioned objectives, an embodiment of the second aspect of the present invention discloses a fault detection device for a heat preservation device, wherein the heat preservation device is provided with a heating device and a temperature detection device, and the fault detection device for the heat preservation device includes: a control module and a determination module, wherein: the control module is used to control the heat preservation device to enter a function detection mode when receiving a start instruction; and, in the function detection mode, after controlling the heating device to heat for a first preset time with a first heating power, controlling the heating device to stop heating until the time reaches a second preset time, recording a first temperature difference between the highest temperature and the lowest temperature detected by the temperature detection device during the first preset time and the second preset time; and, when the first temperature difference is less than or equal to a preset temperature difference threshold, controlling the heating device to heat for a third preset time with a second heating power, recording a second temperature difference between the highest temperature and the lowest temperature detected by the temperature detection device during the third preset time, wherein the second heating power is less than the first heating power; and the determination module is used to determine that a disconnection fault has occurred between the temperature detection device and the heat preservation device when the second temperature difference is less than or equal to the temperature difference threshold.

[0021] According to an embodiment of the present invention, a fault detection device for a heat preservation device is used to implement the fault detection method for a heat preservation device according to the above embodiment of the present invention. When a start command is received, the heat preservation device is controlled to enter a function detection mode to ensure that the function is normal before each heating starts, thereby ensuring the safety of the heat preservation device. In the function detection mode, after controlling the heating device to heat at a first heating power for a first preset time, the heating device is controlled to stop heating until the time reaches a second preset time, and a first temperature difference between the highest temperature and the lowest temperature detected by the temperature detection device during the first preset time and the second preset time is recorded. When the first temperature difference is less than or equal to a preset temperature difference threshold, it indicates that the heat preservation device may have a fault. To avoid false detection, the heating device is first controlled to heat at a second heating power for a third preset time, and then a second temperature difference between the highest temperature and the lowest temperature detected by the temperature detection device during the third preset time is recorded. When the second temperature difference is less than or equal to the temperature difference threshold, it indicates that both the first temperature difference and the second temperature difference are small and do not conform to the temperature change curve of normal heating and heat dissipation. Therefore, it can be accurately determined that the temperature detection device and the heat preservation device have a disconnection fault. In this way, without increasing the cost of the detection equipment, it is possible to effectively determine whether the heat preservation device has a fault by only using the temperature change curve, which has the advantages of low detection cost and high accuracy.

[0022] To achieve the above objectives, an embodiment of the third aspect of the present invention discloses a heat preservation device, which includes: a heating device; a temperature detection device; and a fault detection device of the heat preservation device described in the above embodiment of the present invention.

[0023] According to an embodiment of the present invention, a heat preservation device includes a heat preservation device fault detection device for implementing the heat preservation device fault detection method of the above embodiment of the present invention. When receiving a start command, the heat preservation device is controlled to enter a function detection mode to ensure that the function is normal before each heating starts, thereby ensuring the safety of the heat preservation device. In the function detection mode, after controlling the heating device to heat for a first preset time at a first heating power, the heating device is controlled to stop heating until the time reaches a second preset time, and the first temperature difference between the highest temperature and the lowest temperature detected by the temperature detection device within the first preset time and the second preset time is recorded; when the first temperature difference is less than or equal to the preset When the temperature difference threshold is set, it indicates that the insulation equipment may have failed. To avoid misdetection, the heating device is first controlled to heat at the second heating power for the third preset time, and then the second temperature difference between the highest temperature and the lowest temperature detected by the temperature detection device within the third preset time is recorded; when the second temperature difference is less than or equal to the temperature difference threshold, it indicates that the first temperature difference and the second temperature difference are both small, which do not conform to the temperature change curve of normal heating and heat dissipation, so it can be accurately determined that the temperature detection device and the insulation equipment have failed; in this way, without increasing the cost of the detection equipment, only the temperature change curve can be used to effectively determine whether the insulation equipment has failed, which has the advantages of low detection cost and high accuracy.

[0024] To achieve the above-mentioned objective, an embodiment of a fourth aspect of the present invention discloses an electronic device.

[0025] In some examples, the electronic device includes: a fault detection device for the heat preservation device described in the above embodiment of the present invention.

[0026] In other examples, the electronic device includes: a processor, a memory, and a fault detection program for the thermal insulation device stored in the memory and runnable on the processor. When the fault detection program for the thermal insulation device is executed by the processor, the fault detection method for the thermal insulation device as described in the above-mentioned embodiment of the present invention is implemented.

[0027] An electronic device according to an embodiment of the present invention is used to implement the fault detection method for a heat preservation device according to the above embodiment of the present invention. When a start command is received, the heat preservation device is controlled to enter a function detection mode to ensure that the function is normal before each heating starts, thereby ensuring the safety of the heat preservation device. In the function detection mode, after controlling the heating device to heat at a first heating power for a first preset time, the heating device is controlled to stop heating until the time reaches a second preset time, and a first temperature difference between the highest temperature and the lowest temperature detected by the temperature detection device during the first preset time and the second preset time is recorded. When the first temperature difference is less than or equal to a preset temperature difference threshold, it indicates that the heat preservation device may have failed. To avoid false detection, the heating device is first controlled to heat at a second heating power for a third preset time, and then a second temperature difference between the highest temperature and the lowest temperature detected by the temperature detection device during the third preset time is recorded. When the second temperature difference is less than or equal to the temperature difference threshold, it indicates that both the first temperature difference and the second temperature difference are small and do not conform to the temperature change curve of normal heating and heat dissipation. Therefore, it can be accurately determined that the temperature detection device and the heat preservation device have a disconnection fault. In this way, without increasing the cost of the detection equipment, it is possible to effectively determine whether the heat preservation device has failed by only using the temperature change curve, which has the advantages of low detection cost and high accuracy.

[0028] To achieve the above-mentioned purpose, the fifth aspect of the present invention discloses a computer-readable storage medium, on which a fault detection program for a thermal insulation device is stored. When the fault detection program for the thermal insulation device is executed by a processor, the fault detection method for the thermal insulation device as described in the above-mentioned embodiment of the present invention is implemented.

[0029] According to the computer-readable storage medium of an embodiment of the present invention, when the fault detection program of the heat preservation device stored thereon is executed by the processor, the fault detection method of the heat preservation device of the above embodiment of the present invention can be implemented. When a start instruction is received, the heat preservation device is controlled to enter a function detection mode to ensure that the function is normal before each heating starts, thereby ensuring the safety of the use of the heat preservation device; in the function detection mode, after the heating device is controlled to heat at a first heating power for a first preset time, the heating device is controlled to stop heating until the time reaches a second preset time, and the first temperature difference between the highest temperature and the lowest temperature detected by the temperature detection device within the first preset time and the second preset time is recorded; when the first When the temperature difference is less than or equal to the preset temperature difference threshold, it indicates that the insulation equipment may have failed. To avoid misdetection, the heating device is first controlled to heat at the second heating power for the third preset time, and then the second temperature difference between the highest temperature and the lowest temperature detected by the temperature detection device within the third preset time is recorded; when the second temperature difference is less than or equal to the temperature difference threshold, it indicates that both the first temperature difference and the second temperature difference are small, which do not conform to the temperature change curve of normal heating and heat dissipation. Therefore, it can be accurately determined that the temperature detection device and the insulation equipment have failed; in this way, without increasing the cost of the detection equipment, only the temperature change curve can be used to effectively determine whether the insulation equipment has failed, which has the advantages of low detection cost and high accuracy.

[0030] Additional aspects and advantages of the present invention will be set forth in part in the description which follows and, in part, will be obvious from the description which follows, or may be learned by practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the following description of the embodiments with reference to the accompanying drawings, in which: Figure 1 is a schematic structural diagram of a heat preservation device according to an embodiment of the present invention; Figure 2 is a flow chart of a method for detecting a fault of a heat preservation device according to an embodiment of the present invention; Figure 3 is a schematic structural diagram of a fault detection device for heat preservation equipment according to a specific embodiment of the present invention; Figure 4 This is a flow chart of the operation of a thermos cup and NTC shedding detection according to a specific embodiment of the present invention; Figure 5 This is a flow chart for detecting short circuit, open circuit, and falling-off of an NTC thermistor in a thermos cup according to a specific embodiment of the present invention; Figure 6 1 is a schematic structural diagram of a fault detection device for heat preservation equipment according to an embodiment of the present invention. DETAILED DESCRIPTION

[0032] The embodiments of the present invention will be described in detail below. The embodiments described with reference to the accompanying drawings are exemplary. The embodiments of the present invention will be described in detail below.

[0033] Reference below Figures 1-6 A method and device for detecting a fault of a heat preservation device and the heat preservation device according to an embodiment of the present invention are described.

[0034] Figure 1 Schematic diagram of the structure of the heat preservation device according to one embodiment of the present invention. Figure 1 As shown, the heat preservation device 20 includes a heating switch 1, a DC power supply port 2, a main control board 3, a heating device 4, a temperature detection device 5 and a fuse 6. The heating switch 1 is used to control the opening and closing of the heating, the DC power supply port 2 is used to supply power to the heat preservation device 20, the main control board 3 is used to control the heating process, the heating device 4 is used for heating, the temperature detection device 5 is used to detect the temperature, and the fuse 6 is used to provide protection. In addition, the heat preservation device 20 also includes other conventional cup body components, which are not described here.

[0035] In a specific embodiment, the heat preservation device 20 is, for example, an electronic thermos cup, a medical gel thermos cup, etc., the heating device 4 is, for example, a heating film, and the temperature detection device 5 is, for example, an NTC (Negative Temperature Coefficient) thermistor.

[0036] Figure 2 FIG. 1 is a flow chart of a method for detecting a fault of a heat preservation device according to an embodiment of the present invention. Figure 2 As shown, the fault detection method of the thermal insulation equipment includes the following steps: Step S1: When receiving the start instruction, the heat preservation device 20 is controlled to enter the function detection mode.

[0037] In a specific embodiment, when a start command is received, the heat preservation device 20 is not initially controlled to enter the normal heating mode, but is first controlled to enter the function detection mode. Only after the function detection is normal does it enter the normal heating mode, thereby ensuring that the function is normal before each heating starts, thereby ensuring the safety of the heat preservation device 20. Specifically, the start command can be sent via a mechanical switch or a wireless device such as a remote control.

[0038] Specifically, according to the fault detection method of the heat preservation device of an embodiment of the present invention, when a start command is received, the heat preservation device 20 is controlled to enter the function detection mode to ensure that the function is normal before each heating starts, thereby ensuring the safety of the use of the heat preservation device 20.

[0039] Step S2: In the function detection mode, after controlling the heating device 4 to heat at a first heating power for a first preset time, the heating device 4 is controlled to stop heating until the time reaches a second preset time, and the first temperature difference between the highest temperature and the lowest temperature detected by the temperature detection device 5 within the first preset time and the second preset time is recorded.

[0040] In a specific embodiment, in the function detection mode, the heating device 4 is first controlled to heat at a first heating power for a first preset time, and then the heating device 4 is controlled to stop heating for a second preset time. Then, a first temperature difference between the highest and lowest temperatures detected by the temperature detection device 5 during the first and second preset times is recorded, that is, the maximum temperature difference between the heating and stopping processes is recorded. If the heat preservation device 20 is not faulty, the first temperature difference should be large. Specifically, the first heating power is, for example, full power, and the specific value is determined according to the actual model of the heat preservation device 20. The first preset time is, for example, 90 seconds, and the second preset time is, for example, 60 seconds. The temperature difference threshold is determined according to the actual model of the heat preservation device 20, for example, 3 degrees Celsius.

[0041] Specifically, according to the fault detection method for the heat preservation equipment of an embodiment of the present invention, in the function detection mode, after controlling the heating device 4 to heat at a first heating power for a first preset time, the heating device 4 is controlled to stop heating until the time reaches a second preset time, and the first temperature difference between the highest temperature and the lowest temperature detected by the temperature detection device 5 within the first preset time and the second preset time is recorded, so as to facilitate the subsequent determination of whether the heat preservation equipment 20 has a fault based on the first temperature difference.

[0042] Step S3: When the first temperature difference is less than or equal to the preset temperature difference threshold, control the heating device 4 to heat at the second heating power for a third preset time, and record the second temperature difference between the highest temperature and the lowest temperature detected by the temperature detection device 5 within the third preset time, wherein the second heating power is less than the first heating power.

[0043] In a specific embodiment, the first temperature difference is the maximum temperature difference during the process of not heating and stopping heating. If the heat preservation device 20 has not failed, the first temperature difference should be large. When the first temperature difference is less than or equal to the preset temperature difference threshold, it means that the heat preservation device 20 may have failed. To avoid misdetection, further verification is required, that is: control the heating device 4 to heat at the second heating power for the third preset time, and record the second temperature difference between the highest temperature and the lowest temperature detected by the temperature detection device 5 within the third preset time. If the heat preservation device 20 has not failed, the second temperature difference should be large. Specifically, the second heating power is, for example, half power, and the specific value is determined according to the actual model of the heat preservation device 20. The third preset time is, for example, 5 minutes, and the temperature difference threshold is determined according to the actual model of the heat preservation device 20, for example, 3 degrees Celsius.

[0044] Specifically, according to the fault detection method of the insulation equipment of an embodiment of the present invention, when the first temperature difference is less than or equal to the preset temperature difference threshold, it indicates that the insulation equipment 20 may have a fault. To avoid misdetection, the heating device 4 is first controlled to heat at the second heating power for the third preset time, and then the second temperature difference between the highest temperature and the lowest temperature detected by the temperature detection device 5 within the third preset time is recorded, so as to facilitate the subsequent accurate determination of whether the insulation equipment 20 has a fault based on the second temperature difference.

[0045] Step S4: When the second temperature difference is less than or equal to the temperature difference threshold, it is determined that a disconnection failure occurs between the temperature detection device 5 and the heat preservation device 20 .

[0046] Specifically, when the second temperature difference is less than or equal to the temperature difference threshold, it means that the first temperature difference and the second temperature difference are both small, which does not conform to the temperature change curve of normal heating and heat dissipation. Therefore, it can be accurately determined that the temperature detection device 5 and the insulation equipment 20 have a disconnection failure.

[0047] Therefore, according to the fault detection method of the heat preservation device of the embodiment of the present invention, when receiving the start command, the heat preservation device 20 is controlled to enter the function detection mode, so as to ensure that the function is normal before each heating starts, thereby ensuring the safety of the use of the heat preservation device 20; in the function detection mode, after controlling the heating device 4 to heat for a first preset time at a first heating power, the heating device 4 is controlled to stop heating until the time reaches a second preset time, and the first temperature difference between the highest temperature and the lowest temperature detected by the temperature detection device 5 within the first preset time and the second preset time is recorded; when the first temperature difference is less than or equal to the preset temperature difference threshold, it indicates that the heat preservation device 20 is faulty. A malfunction may occur. To avoid misdetection, the heating device 4 is first controlled to heat at the second heating power for the third preset time, and then the second temperature difference between the highest temperature and the lowest temperature detected by the temperature detection device 5 within the third preset time is recorded; when the second temperature difference is less than or equal to the temperature difference threshold, it means that the first temperature difference and the second temperature difference are both small, which does not conform to the temperature change curve of normal heating and heat dissipation. Therefore, it can be accurately determined that a malfunction has occurred in the temperature detection device 5 and the heat preservation device 20; in this way, without increasing the cost of the detection equipment, only the temperature change curve can be used to effectively determine whether the heat preservation device 20 has a malfunction, which has the advantages of low detection cost and high accuracy.

[0048] In one embodiment of the present invention, the fault detection method for the heat preservation equipment further includes: when the first temperature difference or the second temperature difference is greater than the temperature difference threshold, determining that the temperature detection device 5 is functioning normally. In a specific embodiment, when the heating device 4 is controlled to heat at a first heating power for a first preset time, and then the heating device 4 is controlled to stop heating for a second preset time, the first temperature difference between the highest temperature and the lowest temperature detected by the temperature detection device 5 during the first preset time and the second preset time is recorded, that is, the maximum temperature difference between the heating and stopping processes is recorded. If the first temperature difference is greater than a temperature difference threshold, it can be determined that the temperature detection device 5 is functioning properly. Specifically, the first heating power is, for example, full power, and the specific value is determined based on the actual model of the heat preservation device 20. The first preset time is, for example, 90 seconds, and the second preset time is, for example, 60 seconds. The temperature difference threshold is determined based on the actual model of the heat preservation device 20, for example, 3 degrees Celsius.

[0049] In a specific embodiment, when the heating device 4 is controlled to heat at a second heating power for a third preset time, a second temperature difference between the highest and lowest temperatures detected by the temperature detection device 5 within the third preset time is recorded. If the second temperature difference is greater than a temperature difference threshold, it can be determined that the temperature detection device 5 is functioning properly. Specifically, the second heating power is, for example, half power, the specific value of which is determined based on the actual model of the heat preservation device 20. The third preset time is, for example, 5 minutes, and the temperature difference threshold is, for example, 3 degrees Celsius, which is determined based on the actual model of the heat preservation device 20.

[0050] Specifically, according to the fault detection method for the heat preservation equipment of an embodiment of the present invention, when the first temperature difference or the second temperature difference is greater than the temperature difference threshold, it is determined that the temperature detection device 5 is functioning normally; in this way, without increasing the cost of the detection equipment, only the temperature change curve can be used to effectively determine whether the heat preservation equipment 20 has a fault, which has the advantages of low detection cost and high accuracy.

[0051] In one embodiment of the present invention, the fault detection method of the heat preservation equipment further includes: when it is determined that the temperature detection device 5 functions normally, controlling the heat preservation equipment 20 to enter the normal heating mode, wherein, in the normal heating mode, the heating device 4 is controlled to heat at the first heating power. In a specific embodiment, the heat preservation device 20 is controlled to enter the normal heating mode only when it is determined that the temperature detection device 5 is functioning normally, thereby ensuring the safety of the heat preservation device 20. Specifically, in the normal heating mode, the heating device 4 is controlled to heat at a first heating power, which is, for example, full power. The specific value is determined according to the actual model of the heat preservation device 20.

[0052] Specifically, according to the fault detection method of the heat preservation device of the embodiment of the present invention, the heat preservation device 20 is controlled to enter the normal heating mode only when it is determined that the temperature detection device 5 is functioning normally, thereby ensuring the safety of the use of the heat preservation device 20.

[0053] In one embodiment of the present invention, the fault detection method for the heat preservation device further includes: in the normal heating mode, determining the fault condition of the heat preservation device 20 according to the temperature continuously detected by the temperature detection device 5 within a fourth preset time. In a specific embodiment, the heat preservation device fault detection method detects faults not only in the functional detection mode but also in the normal heating mode. Specifically, the heat preservation device 20 fault is determined based on the temperature continuously detected by the temperature detection device 5 within a fourth preset time. Specifically, the fourth preset time is the time in the normal heating mode, and the specific value is determined based on the actual model of the heat preservation device 20, the amount of water heated, and other factors.

[0054] Specifically, according to the fault detection method for the heat preservation equipment of an embodiment of the present invention, in the normal heating mode, the fault condition of the heat preservation equipment 20 is determined based on the temperature continuously detected by the temperature detection device 5 within the fourth preset time. In this way, faults are detected not only in the functional detection mode, but also in the normal heating mode, which helps to expand the scope and scenarios of fault detection.

[0055] In one embodiment of the present invention, in normal heating mode, the fault condition of the heat preservation device 20 is determined based on the temperature continuously detected by the temperature detection device 5 within the fourth preset time, including: fitting and determining the temperature change straight line based on the temperature continuously detected by the temperature detection device 5 within the fourth preset time; when the slope of the temperature change straight line is less than the preset slope threshold, it is determined that a disconnection fault has occurred between the temperature detection device 5 and the heat preservation device 20. In a specific embodiment, when a fault is detected in normal heating mode, a temperature change line is fitted based on the temperatures continuously detected by the temperature detection device 5 within a fourth preset time. When the slope of the temperature change line is less than a preset slope threshold, it indicates that the temperature change curve does not conform to normal heating and heat dissipation, thereby accurately determining that a disconnection fault has occurred between the temperature detection device 5 and the heat preservation device 20. Specifically, the fourth preset time is the time of normal heating mode. The specific value is determined based on the actual model of the heat preservation device 20, the amount of water heated, etc. The temperature change line can be fitted using methods such as the least squares method, and the slope threshold is, for example, -10.

[0056] Specifically, according to the fault detection method for the thermal insulation equipment of an embodiment of the present invention, when a fault is detected in the normal heating mode, a temperature change straight line is fitted and determined based on the temperature continuously detected by the temperature detection device 5 within the fourth preset time; when the slope of the temperature change straight line is less than the preset slope threshold, it indicates that the temperature change curve does not conform to normal heating and heat dissipation, thereby accurately determining that the temperature detection device 5 and the thermal insulation equipment 20 have a disconnection fault; in this way, not only can the temperature change curve be used without increasing the cost of the detection equipment, but it can also be used to effectively determine whether the thermal insulation equipment has a fault, which has the advantages of low detection cost and high accuracy, and can also expand the scope and scenarios of fault detection.

[0057] In one embodiment of the present invention, the fault detection method for the heat preservation device further includes: determining the fault condition of the heat preservation device 20 according to the temperature detected by the temperature detection device 5 in the function detection mode and the normal heating mode. In a specific embodiment, the fault detection method for the heat preservation device can also detect common faults in the functional detection mode and the normal heating mode. That is, the fault condition of the heat preservation device 20 is determined based on the temperature detected by the temperature detection device 5. Specifically, common faults in the functional detection mode and the normal heating mode include short circuit and open circuit, for example.

[0058] Specifically, according to the fault detection method of the insulation equipment of an embodiment of the present invention, in the functional detection mode and the normal heating mode, the fault condition of the insulation equipment 20 is determined based on the temperature detected by the temperature detection device 5, so that common faults in the functional detection mode and the normal heating mode can be detected, which helps to expand the scope and scenarios of fault detection.

[0059] In one embodiment of the present invention, in the functional detection mode and the normal heating mode, the fault condition of the insulation device 20 is determined based on the temperature detected by the temperature detection device 5, including: when the temperature detected by the temperature detection device 5 is greater than the preset first temperature threshold, it is determined that the temperature detection device 5 has a short circuit fault. In a specific embodiment, when detecting a fault in both the function detection mode and the normal heating mode, if the temperature detected by the temperature detection device 5 is greater than a preset first temperature threshold, it indicates that the corresponding resistance value of the temperature detection device 5 is close to 0, thereby accurately determining that a short circuit fault has occurred in the temperature detection device 5. Specifically, the first temperature threshold is determined based on the actual model of the heat preservation device 20, for example, 42 degrees Celsius.

[0060] Specifically, according to the fault detection method for heat preservation equipment of an embodiment of the present invention, when a fault is detected in the functional detection mode and the normal heating mode, if the temperature detected by the temperature detection device 5 is greater than the preset first temperature threshold, it means that the corresponding resistance value of the temperature detection device 5 is close to 0, thereby accurately determining that a short circuit fault has occurred in the temperature detection device 5; in this way, without increasing the cost of the detection equipment, only the temperature value can be used to effectively determine whether a short circuit fault has occurred in the heat preservation equipment, which has the advantages of low detection cost and high accuracy.

[0061] In one embodiment of the present invention, in the functional detection mode and the normal heating mode, the fault condition of the insulation device 20 is determined based on the temperature detected by the temperature detection device 5, including: when the temperature detected by the temperature detection device 5 is lower than the preset second temperature threshold, it is determined that the temperature detection device 5 has a short circuit fault. In a specific embodiment, when detecting a fault in both the functional detection mode and the normal heating mode, if the temperature detected by the temperature detection device 5 is less than a preset second temperature threshold, it indicates that the corresponding resistance of the temperature detection device 5 is close to infinity, thereby accurately determining that a short circuit fault has occurred in the temperature detection device 5. Specifically, the second temperature threshold is determined based on the actual model of the heat preservation device 20, for example, -20 degrees Celsius (note that -20 degrees Celsius is a representative temperature, not an actual temperature).

[0062] Specifically, according to the fault detection method for heat preservation equipment of an embodiment of the present invention, when a fault is detected in the functional detection mode and the normal heating mode, if the temperature detected by the temperature detection device 5 is lower than the preset second temperature threshold, it means that the corresponding resistance value of the temperature detection device 5 is close to infinity, thereby accurately determining that the temperature detection device 5 has a short circuit fault; in this way, without increasing the cost of the detection equipment, only the temperature value can be used to effectively determine whether the heat preservation equipment has a short circuit fault, which has the advantages of low detection cost and high accuracy.

[0063] In one embodiment of the present invention, the fault detection method for the heat preservation equipment further includes: when it is determined that the temperature detection device 5 has a fault, outputting different alarm signals according to the type of the fault. In a specific embodiment, the fault detection method for the heat preservation device can further output different alarm signals according to the type of fault when it is determined that the temperature detection device 5 has failed. Specifically, the types of faults include short circuit, open circuit, and disconnection, and the alarm signals include, but are not limited to, audible and visual alarm signals.

[0064] Specifically, according to the fault detection method of the thermal insulation equipment of an embodiment of the present invention, when it is determined that the temperature detection device 5 has a short circuit, an open circuit or a disconnection fault, different alarm signals are output according to the type of fault, so as to promptly remind the user and facilitate the user to promptly cut off the power for maintenance, thereby ensuring the safety of the thermal insulation equipment 20 and the user.

[0065] In one embodiment of the present invention, the fault detection method for the heat preservation equipment further includes: when it is determined that the temperature detection device 5 has a fault, controlling the heating device 4 to stop working. In a specific embodiment, the fault detection method of the heat preservation device can also automatically control the heating device 4 to stop working when it is determined that the temperature detection device 5 has failed, thereby preventing continued heating in the event of a failure, resulting in an uncontrolled excessive temperature increase. Specifically, the types of failure include short circuit, open circuit, and disconnection.

[0066] Specifically, according to the fault detection method of the thermal insulation equipment of an embodiment of the present invention, when it is determined that the temperature detection device 5 has a fault, the heating device 4 is automatically controlled to stop working, so as to prevent continued heating in the event of a fault, causing the temperature to be out of control and too high, thereby ensuring the safety of the thermal insulation equipment 20 and the user.

[0067] The following is a further explanation of the fault detection method of the heat preservation device in the above embodiment of the present invention in conjunction with a specific embodiment. In this specific embodiment, the heat preservation device 20 is a medical gel insulation cup, the heating device 4 is a heating film, and the temperature detection device 5 is an NTC thermistor.

[0068] Figure 3 FIG. 1 is a schematic structural diagram of a fault detection device for heat preservation equipment according to a specific embodiment of the present invention. Figure 3 As shown, in this specific embodiment, the fault detection device of the heat preservation equipment is used to implement the fault detection method of the heat preservation equipment in the above embodiment of the present invention.

[0069] like Figure 1 and Figure 3As shown, in this specific embodiment, the medical gel thermos cup includes a microprocessor, a main control circuit, a heating film, a high-temperature fuse, an NTC temperature sensor and a DC power supply. The medical gel thermos is powered by a DC power supply, and the microprocessor heats the thermos through the main control circuit and heating film. The NTC temperature sensor is used to detect the heating temperature of the thermos in real time. The DC power supply is directly connected to the thermos to power the thermos. The microprocessor inside the thermos monitors the temperature of the NTC thermistor built into the thermos in real time through ADC (analog to digital converter) analog-to-digital sampling. The resistance of the NTC thermistor decreases as the temperature rises, and is generally 10KR at room temperature of 25 degrees Celsius. The normal heating temperature range of the thermos is generally between 0°C and 40°C, and the optimal maintenance temperature range is generally 37°C to 38°C. When the temperature value corresponding to the NTC thermistor reaches or exceeds 42 degrees Celsius, the corresponding NTC resistance value is close to 0, at which time it can be determined that the NTC is short-circuited. The main control microprocessor cuts off the power supply to the heating film through the heating control circuit and stops heating.

[0070] Figure 4 This is a flow chart of the vacuum flask operation and NTC shedding detection according to a specific embodiment of the present invention. Figure 5 This is a flow chart of detecting short circuit, open circuit, and falling-off of an NTC thermistor of a thermos cup according to a specific embodiment of the present invention. Figure 4 and Figure 5 As shown, in this specific embodiment, when the heating control switch is closed, the thermos cup starts to work, and the main control microprocessor first enters the NTC initial abnormality detection stage.

[0071] In this specific embodiment, in the initial abnormality detection stage of NTC, the main control microprocessor turns on the heating film through the control circuit, first starts heating at full power for 90 seconds, and records the difference between the highest and lowest temperatures; if the temperature difference is greater than 3 degrees Celsius, it is determined that the NTC function is normal, and the main control microprocessor immediately enters the normal heating process; if the temperature difference is less than 3 degrees Celsius, after the 90 seconds of heating, the main control microprocessor immediately turns off the heating film through the control circuit, stops heating for 60 seconds, and records the difference between the highest and lowest temperatures; if the temperature difference is greater than 3 degrees Celsius, it is determined that the NTC function is normal, and the main control microprocessor immediately enters the normal heating process; if the temperature difference is less than 3 degrees Celsius, the main control microprocessor predicts that there is a possibility of NTC falling off failure, and immediately enters the fault confirmation stage.

[0072] In this specific embodiment, in the fault confirmation stage, the main control microprocessor turns on the heating film at half power through the control circuit for heating for 5 minutes, and records the difference between the highest and lowest temperatures; if the temperature difference is greater than 3 degrees Celsius, it is determined that the NTC function is normal, and the main control microprocessor immediately enters the normal heating process; if the temperature difference is less than 3 degrees Celsius in the fault confirmation stage, it is determined that the NTC is in a detachment fault state, and the main controller immediately turns off the heating film through the control circuit to stop heating.

[0073] In this specific embodiment, when no fault is detected in the NTC initial abnormality detection phase, the main control microprocessor enters the normal operation phase.

[0074] In this specific embodiment, during the normal working stage, the main control microprocessor collects the NTC temperature in real time and controls the heating film switch through the control circuit; when the temperature value detected by the NTC is greater than 39 degrees Celsius, the heating film is turned off; when the temperature value detected by the NTC is less than 38.7 degrees Celsius, the heating film is turned on; at this time, the gel temperature in the thermos can be maintained at an ideal state of 37~38 degrees Celsius.

[0075] In this specific embodiment, during the normal working phase, the main control microprocessor performs a linear fitting on the collected NTC temperature change curve using the least squares method (see equations 1 and 2). , where y represents the NTC temperature, x represents the sampling number, a represents the slope, and b represents the intercept; the main control microprocessor obtains the slope a of the fitted straight line in real time (see formula 1); if the slope a is less than -10, it is determined that the NTC has fallen off during operation, and the main control microprocessor immediately turns off the heating film through the control circuit to stop heating.

[0076] (1) (2) In this embodiment, the main control microprocessor monitors the NTC temperature sample value in real time throughout the entire operating phase. If the sample temperature is greater than 42 degrees Celsius for one consecutive minute, the NTC is determined to be short-circuited. In this case, the main control microprocessor immediately turns off the heating film through the control circuit, stopping heating.

[0077] Similarly, in this embodiment, the main control microprocessor monitors the NTC temperature sampling value in real time throughout the entire operating phase. If the sampling temperature is below -20 degrees Celsius for one consecutive minute, the NTC is determined to be open. At this time, the main control microprocessor immediately turns off the heating film through the control circuit, stopping heating.

[0078] It can be seen that in this specific embodiment, the fault detection device of the heat preservation equipment is used to implement the fault detection method of the heat preservation equipment in the above embodiment of the present invention. It is only necessary to utilize the built-in NTC thermistor of a conventional heat preservation cup and the ADC sampling function of the main control microprocessor of the heat preservation cup to simply detect the NTC temperature sampling value and its change curve. The fault status of the NTC can be monitored in real time, and NTC fault detection and protection can be realized, thereby providing effective fault detection and safety protection while reducing the cost of the heat preservation cup.

[0079] In summary, according to the fault detection method of the heat preservation device of the embodiment of the present invention, when receiving the start command, the heat preservation device 20 is controlled to enter the function detection mode, so as to ensure that the function is normal before each heating starts, thereby ensuring the safety of the use of the heat preservation device 20; in the function detection mode, after controlling the heating device 4 to heat for a first preset time at a first heating power, the heating device 4 is controlled to stop heating until the time reaches a second preset time, and the first temperature difference between the highest temperature and the lowest temperature detected by the temperature detection device 5 within the first preset time and the second preset time is recorded; when the first temperature difference is less than or equal to the preset temperature difference threshold, it indicates that the heat preservation device 20 is faulty. A malfunction may occur. To avoid misdetection, the heating device 4 is first controlled to heat at the second heating power for the third preset time, and then the second temperature difference between the highest temperature and the lowest temperature detected by the temperature detection device 5 within the third preset time is recorded; when the second temperature difference is less than or equal to the temperature difference threshold, it means that the first temperature difference and the second temperature difference are both small, which does not conform to the temperature change curve of normal heating and heat dissipation. Therefore, it can be accurately determined that a malfunction has occurred in the temperature detection device 5 and the heat preservation device 20; in this way, without increasing the cost of the detection equipment, only the temperature change curve can be used to effectively determine whether the heat preservation device 20 has a malfunction, which has the advantages of low detection cost and high accuracy.

[0080] Figure 6 FIG. 1 is a schematic structural diagram of a fault detection device for heat preservation equipment according to an embodiment of the present invention. Figure 6As shown, an embodiment of the second aspect of the present invention further proposes a fault detection device 10 for heat preservation equipment, on which a heating device and a temperature detection device are provided. The fault detection device 10 includes: a control module 11 and a determination module 12, wherein the control module 11 is used to control the heat preservation equipment to enter a function detection mode when a start instruction is received; and, in the function detection mode, after controlling the heating device to heat for a first preset time with a first heating power, the heating device is controlled to stop heating until the time reaches a second preset time, and the first temperature difference between the highest temperature and the lowest temperature detected by the temperature detection device during the first preset time and the second preset time is recorded; and, when the first temperature difference is less than or equal to the preset temperature difference threshold, the heating device is controlled to heat for a third preset time with a second heating power, and the second temperature difference between the highest temperature and the lowest temperature detected by the temperature detection device during the third preset time is recorded, wherein the second heating power is less than the first heating power; the determination module 12 is used to determine that a disconnection fault occurs between the temperature detection device and the heat preservation equipment when the second temperature difference is less than or equal to the temperature difference threshold.

[0081] In some embodiments, the determination module 12 is further configured to determine that the temperature detection device functions normally when the first temperature difference or the second temperature difference is greater than a temperature difference threshold.

[0082] In some embodiments, the control module 11 is further configured to control the heat preservation device to enter a normal heating mode when the determination module 14 determines that the temperature detection device functions normally, wherein in the normal heating mode, the heating device is controlled to heat at a first heating power.

[0083] In some embodiments, the determination module 12 is further configured to determine, in a normal heating mode, a fault condition of the heat preservation device based on the temperature continuously detected by the temperature detection device within a fourth preset time.

[0084] In some embodiments, the determination module 12 determines the fault condition of the insulation equipment in the normal heating mode based on the temperature continuously detected by the temperature detection device within the fourth preset time, including: fitting and determining the temperature change straight line based on the temperature continuously detected by the temperature detection device within the fourth preset time; when the slope of the temperature change straight line is less than the preset slope threshold, it is determined that a disconnection fault has occurred between the temperature detection device and the insulation equipment.

[0085] In some embodiments, the determination module 12 is further configured to determine a fault condition of the heat preservation device according to the temperature detected by the temperature detection device in the function detection mode and the normal heating mode.

[0086] In some embodiments, the determination module 12 determines the fault condition of the insulation equipment based on the temperature detected by the temperature detection device in the functional detection mode and the normal heating mode, including: when the temperature detected by the temperature detection device is greater than the preset first temperature threshold, determining that the temperature detection device has a short circuit fault.

[0087] In some embodiments, the determination module 12 determines the fault condition of the insulation equipment based on the temperature detected by the temperature detection device in the functional detection mode and the normal heating mode, including: when the temperature detected by the temperature detection device is lower than the preset second temperature threshold, determining that the temperature detection device has a short circuit fault.

[0088] In some embodiments, the control module 11 is further configured to output different alarm signals according to the type of fault when it is determined that the temperature detection device has failed.

[0089] In some embodiments, the control module 11 is further configured to control the heating device to stop working when it is determined that the temperature detection device fails.

[0090] According to an embodiment of the present invention, a fault detection device 10 for a heat preservation device is used to implement the fault detection method for a heat preservation device according to the above embodiment of the present invention. When a start command is received, the heat preservation device is controlled to enter a function detection mode to ensure that the function is normal before each heating starts, thereby ensuring the safety of the heat preservation device. In the function detection mode, after controlling the heating device to heat at a first heating power for a first preset time, the heating device is controlled to stop heating until the time reaches a second preset time, and a first temperature difference between the highest temperature and the lowest temperature detected by the temperature detection device during the first preset time and the second preset time is recorded. When the first temperature difference is less than or equal to a preset temperature difference threshold, it indicates that the heat preservation device may have a fault. To avoid false detection, the heating device is first controlled to heat at a second heating power for a third preset time, and then a second temperature difference between the highest temperature and the lowest temperature detected by the temperature detection device during the third preset time is recorded. When the second temperature difference is less than or equal to the temperature difference threshold, it indicates that both the first temperature difference and the second temperature difference are small and do not conform to the temperature change curve of normal heating and heat dissipation. Therefore, it can be accurately determined that the temperature detection device and the heat preservation device have a disconnection fault. In this way, without increasing the cost of the detection equipment, only the temperature change curve can be used to effectively determine whether the heat preservation device has a fault, which has the advantages of low detection cost and high accuracy.

[0091] To achieve the above objectives, an embodiment of the third aspect of the present invention discloses a heat preservation device, which includes: a heating device; a temperature detection device; and a fault detection device for the heat preservation device described in the above embodiment of the present invention.

[0092] According to an embodiment of the present invention, a heat preservation device includes a heat preservation device fault detection device for implementing the heat preservation device fault detection method of the above embodiment of the present invention. When receiving a start command, the heat preservation device is controlled to enter a function detection mode to ensure that the function is normal before each heating starts, thereby ensuring the safety of the heat preservation device. In the function detection mode, after controlling the heating device to heat for a first preset time at a first heating power, the heating device is controlled to stop heating until the time reaches a second preset time, and the first temperature difference between the highest temperature and the lowest temperature detected by the temperature detection device within the first preset time and the second preset time is recorded; when the first temperature difference is less than or equal to the preset When the temperature difference threshold is set, it indicates that the insulation equipment may have failed. To avoid misdetection, the heating device is first controlled to heat at the second heating power for the third preset time, and then the second temperature difference between the highest temperature and the lowest temperature detected by the temperature detection device within the third preset time is recorded; when the second temperature difference is less than or equal to the temperature difference threshold, it indicates that the first temperature difference and the second temperature difference are both small, which do not conform to the temperature change curve of normal heating and heat dissipation, so it can be accurately determined that the temperature detection device and the insulation equipment have failed; in this way, without increasing the cost of the detection equipment, only the temperature change curve can be used to effectively determine whether the insulation equipment has failed, which has the advantages of low detection cost and high accuracy.

[0093] To achieve the above-mentioned objective, an embodiment of a fourth aspect of the present invention discloses an electronic device.

[0094] In some examples, the electronic device includes: the thermal insulation device fault detection device 10 described in the above embodiment of the present invention.

[0095] In other examples, the electronic device includes: a processor, a memory, and a fault detection program for the thermal insulation device stored in the memory and runnable on the processor. When the fault detection program for the thermal insulation device is executed by the processor, the fault detection method for the thermal insulation device as described in the above-mentioned embodiment of the present invention is implemented.

[0096] An electronic device according to an embodiment of the present invention is used to implement the fault detection method for a heat preservation device according to the above embodiment of the present invention. When a start command is received, the heat preservation device is controlled to enter a function detection mode to ensure that the function is normal before each heating starts, thereby ensuring the safety of the heat preservation device. In the function detection mode, after controlling the heating device to heat at a first heating power for a first preset time, the heating device is controlled to stop heating until the time reaches a second preset time, and a first temperature difference between the highest temperature and the lowest temperature detected by the temperature detection device during the first preset time and the second preset time is recorded. When the first temperature difference is less than or equal to a preset temperature difference threshold, it indicates that the heat preservation device may have failed. To avoid false detection, the heating device is first controlled to heat at a second heating power for a third preset time, and then a second temperature difference between the highest temperature and the lowest temperature detected by the temperature detection device during the third preset time is recorded. When the second temperature difference is less than or equal to the temperature difference threshold, it indicates that both the first temperature difference and the second temperature difference are small and do not conform to the temperature change curve of normal heating and heat dissipation. Therefore, it can be accurately determined that the temperature detection device and the heat preservation device have a disconnection fault. In this way, without increasing the cost of the detection equipment, it is possible to effectively determine whether the heat preservation device has failed by only using the temperature change curve, which has the advantages of low detection cost and high accuracy.

[0097] To achieve the above-mentioned purpose, the fifth aspect of the present invention discloses a computer-readable storage medium, on which a fault detection program for a thermal insulation device is stored. When the fault detection program for the thermal insulation device is executed by a processor, the fault detection method for the thermal insulation device as described in the above-mentioned embodiment of the present invention is implemented.

[0098] According to the computer-readable storage medium of an embodiment of the present invention, when the fault detection program of the heat preservation device stored thereon is executed by the processor, it is used to implement the fault detection method of the heat preservation device of the above embodiment of the present invention. When a start instruction is received, the heat preservation device is controlled to enter a function detection mode to ensure that the function is normal before each heating starts, thereby ensuring the safety of the use of the heat preservation device; in the function detection mode, after controlling the heating device to heat at a first heating power for a first preset time, the heating device is controlled to stop heating until the time reaches a second preset time, and the first temperature difference between the highest temperature and the lowest temperature detected by the temperature detection device within the first preset time and the second preset time is recorded; when the first When the temperature difference is less than or equal to the preset temperature difference threshold, it indicates that the insulation equipment may have failed. To avoid misdetection, the heating device is first controlled to heat at the second heating power for the third preset time, and then the second temperature difference between the highest temperature and the lowest temperature detected by the temperature detection device within the third preset time is recorded; when the second temperature difference is less than or equal to the temperature difference threshold, it indicates that both the first temperature difference and the second temperature difference are small, which do not conform to the temperature change curve of normal heating and heat dissipation. Therefore, it can be accurately determined that the temperature detection device and the insulation equipment have failed; in this way, without increasing the cost of the detection equipment, only the temperature change curve can be used to effectively determine whether the insulation equipment has failed, which has the advantages of low detection cost and high accuracy.

[0099] Throughout this specification, reference to terms such as "one embodiment," "some embodiments," "illustrative embodiments," "example," "specific example," or "some examples" means that a specific feature, structure, material, or characteristic described in conjunction with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example.

[0100] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to the embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the claims and their equivalents.

Claims

1. A method for detecting a fault of a heat preservation device, characterized in that: The heat preservation device is provided with a heating device and a temperature detection device, and the fault detection method of the heat preservation device includes: When receiving the start instruction, controlling the heat preservation device to enter the function detection mode; In the function detection mode, after controlling the heating device to heat at a first heating power for a first preset time, controlling the heating device to stop heating until the time reaches a second preset time, and recording a first temperature difference between the highest temperature and the lowest temperature detected by the temperature detection device during the first preset time and the second preset time; When the first temperature difference is less than or equal to a preset temperature difference threshold, controlling the heating device to heat at a second heating power for a third preset time, and recording a second temperature difference between the highest temperature and the lowest temperature detected by the temperature detection device within the third preset time, wherein the second heating power is less than the first heating power; When the second temperature difference is less than or equal to the temperature difference threshold, it is determined that a disconnection failure occurs between the temperature detection device and the heat preservation device.

2. The fault detection method for heat preservation equipment according to claim 1, characterized in that: Also includes: When the first temperature difference or the second temperature difference is greater than the temperature difference threshold, it is determined that the temperature detection device functions normally.

3. The fault detection method for heat preservation equipment according to claim 2, characterized in that: Also includes: When it is determined that the temperature detection device functions normally, the heat preservation device is controlled to enter a normal heating mode, wherein in the normal heating mode, the heating device is controlled to heat at the first heating power.

4. The fault detection method for heat preservation equipment according to claim 3, characterized in that: Also includes: In the normal heating mode, a fault condition of the heat preservation device is determined based on the temperature continuously detected by the temperature detection device within a fourth preset time.

5. The fault detection method for heat preservation equipment according to claim 4, characterized in that: In the normal heating mode, determining a fault condition of the heat preservation device according to the temperature continuously detected by the temperature detection device within a fourth preset time includes: fitting and determining a temperature variation straight line based on the temperatures continuously detected by the temperature detection device within a fourth preset time; When the slope of the temperature change line is less than a preset slope threshold, it is determined that a disconnection failure occurs between the temperature detection device and the heat preservation device.

6. The fault detection method for heat preservation equipment according to claim 3, characterized in that: Also includes: In the function detection mode and the normal heating mode, the fault condition of the heat preservation device is determined based on the temperature detected by the temperature detection device.

7. The fault detection method for heat preservation equipment according to claim 6, characterized in that: Determining a fault condition of the heat preservation device according to the temperature detected by the temperature detection device in the function detection mode and the normal heating mode includes: When the temperature detected by the temperature detection device is greater than a preset first temperature threshold, it is determined that a short circuit fault occurs in the temperature detection device.

8. The fault detection method for heat preservation equipment according to claim 6, characterized in that: Determining a fault condition of the heat preservation device according to the temperature detected by the temperature detection device in the function detection mode and the normal heating mode includes: When the temperature detected by the temperature detection device is lower than a preset second temperature threshold, it is determined that a circuit breaker fault occurs in the temperature detection device.

9. A fault detection device for heat preservation equipment, characterized in that: The heat preservation device is provided with a heating device and a temperature detection device, and the fault detection device of the heat preservation device includes a control module and a determination module, wherein: The control module is used to control the heat preservation device to enter a function detection mode when receiving a start instruction; and In the function detection mode, after controlling the heating device to heat at a first heating power for a first preset time, controlling the heating device to stop heating until the time reaches a second preset time, recording a first temperature difference between the highest temperature and the lowest temperature detected by the temperature detection device during the first preset time and the second preset time; and When the first temperature difference is less than or equal to a preset temperature difference threshold, controlling the heating device to heat at a second heating power for a third preset time, and recording a second temperature difference between the highest temperature and the lowest temperature detected by the temperature detection device within the third preset time, wherein the second heating power is less than the first heating power; The determining module is configured to determine that a disconnection failure occurs between the temperature detection device and the heat preservation device when the second temperature difference is less than or equal to the temperature difference threshold.

10. A heat preservation device, characterized in that: include: Heating device; Temperature detection device; as well as, The fault detection device for heat preservation equipment according to claim 9.

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