Monitoring method, system and equipment for protective memory

Abstract

The invention relates to a method for monitoring a protective memory, which comprises the following steps of: S1, carrying out classified test on internal temperature change states of a standard protective memory under different external temperature conditions to obtain internal and external temperature standard data sets of the standard protective memory under different external temperature conditions; s2, respectively acquiring data information of temperature change along with time inside and outside the actual to-be-tested protective memory, and comparing the data information with the standard data set; s3, determining a protection memory state corresponding to the data information; and S4, when the state of the protection storage corresponds to the preset water box damage classification, giving an alarm prompt. The risk that in the prior art, the protection performance is reduced or fails due to leakage of an inner container water box is avoided.

Description

Technical Field

[0001] This application relates to the field of protective memories for vehicle driving recorders, and particularly to a monitoring method, system, and device for a protective memory. Background Art

[0002] Existing protective memories for vehicle driving recorders generally consist of a housing, a nano-material heat insulation board, an internal water box, and a storage chip PCBA board. The amount of liquid stored in the internal water box and its sealing performance are directly related to the high-temperature protection ability of the protective memory. Due to production process and other issues, the water box may leak, resulting in protection failure during the product life cycle. However, current products lack a means to monitor the change in the liquid storage volume in the water box and the sealing performance of the water box. Summary of the Invention

[0003] To solve the above problems, an embodiment of this application provides a monitoring method for a protective memory, including the following steps:

[0004] A monitoring method for a protective memory, including the following steps:

[0005] S1 Classify and test the internal temperature change state of a standard protective memory under different external temperature conditions to obtain an internal and external temperature standard data set of the standard protective memory under different external temperature conditions;

[0006] S2 Respectively obtain the data information of the temperature change over time inside and outside the actual protective memory to be tested, and compare the data information with the standard data set;

[0007] S3 Determine the state of the protective memory corresponding to the data information;

[0008] S4 When the state of the protective memory corresponds to a preset water box damage classification, give an alarm prompt.

[0009] Optionally,

[0010] Generate a change curve based on the data information;

[0011] The classification test conditions of the standard data set include: the internal and external temperature change time, change speed, temperature change slope value, and the starting value of the internal and external temperature change and the time to reach the internal and external temperature balance under different external temperature conditions.

[0012] Optionally, step S2 includes:

[0013] Calculate the derivative of the data of the internal temperature change curve of the protective memory to obtain the maximum value of its curve slope, that is, the maximum value of its temperature rise rate, and determine its heating duration, and query and compare from the standard data set.

[0014] Optionally, the method further includes:

[0015] Sampling the temperature before the maximum slope temperature point of the curve of the internal temperature of the protection memory changing with time at regular time intervals, and further comparing it with the standard data set to enhance the reliability of the determination.

[0016] Optionally, sampling the temperature curve after the starting temperature inside the protection memory at regular time intervals, and further comparing it with the standard data set to enhance the reliability of the determination.

[0017] Optionally, step S2 includes:

[0018] Determine the change curve and the maximum temperature value of the external temperature of the protection memory. When the external temperature of the protection memory is greater than 0°C and the starting temperature inside the water box is less than 0°C, measure the duration of the temperature segment maintained at 0°C inside the water box during the heating process, and compare it with the standard data set to determine whether the liquid in the water box leaks.

[0019] Optionally, the method further includes: sending the data information of the internal and external temperatures of the protection memory changing with time to the cloud operation and maintenance platform, and a standard data set is stored in the cloud operation and maintenance platform:

[0020] The cloud operation and maintenance platform further records and analyzes the uploaded status temperature information, compares it with the historical status information, and sends a warning message to the user.

[0021] On the other hand, the present application also provides a monitoring system for a protection memory, and the system includes:

[0022] A test module configured to: classify and test the internal temperature change state of a standard protection memory under different external temperature conditions to obtain an internal and external temperature standard data set of the standard protection memory under different external temperature conditions;

[0023] A detection module respectively obtains the data information of the internal and external temperatures of the actual protection memory to be tested changing with time, and compares the data information with the standard data set;

[0024] A judgment module configured to: determine the state of the protection memory corresponding to the data information; when the state of the protection memory corresponds to a preset water box breakage classification, an alarm prompt is given.

[0025] Optionally, the internal and external temperature change times, change speeds, temperature change slope values, internal and external temperature change starting values, and the time to reach internal and external temperature balance under different external temperature conditions.

[0026] Optionally, the detection module is configured to: calculate the derivative of the internal temperature change curve data of the protection memory, obtain the maximum value of its curve slope, that is, the maximum value of its temperature rise rate, and determine its heating duration, and query and compare it from the standard data set.

[0027] Optionally, the detection module is configured to: sample the temperature at regular time intervals before the temperature point of the maximum slope of the curve of the internal temperature of the protection memory changing with time, sample the temperature curve after the starting temperature of the protection memory at regular time intervals, and further compare it with the standard data set to strengthen the reliability of the determination.

[0028] Optionally, the detection module is configured to: determine the change curve and the maximum temperature value of the external temperature of the protection memory. When the external temperature of the protection memory is greater than 0 °C and the starting temperature inside the water box is less than 0 °C, measure the duration of the temperature segment maintained at 0 °C inside the water box during the heating process, and compare it with the standard data set to determine whether the liquid in the water box leaks.

[0029] Optionally, the system further includes a sending module and a cloud operation and maintenance platform. The sending module is configured to: send the data information of the internal and external temperatures of the protection memory changing with time to the cloud operation and maintenance platform, and a standard data set is stored in the cloud operation and maintenance platform:

[0030] The cloud operation and maintenance platform is configured to: perform further analysis based on the data regularly reported by all devices in each region, further optimize the standard data set through big data algorithms, the cloud operation and maintenance platform further records and analyzes the uploaded status temperature information, compares it with the historical status information, and sends a warning message to the user.

[0031] On the other hand, the present application also provides a monitoring device for a protection memory. The device includes: a protection memory and a driving recorder main board;

[0032] The protection memory includes a storage chip, a microcontroller, and a temperature detection element for monitoring the temperature of the inner tank water box;

[0033] The driving recorder main board includes a driving recorder CPU and a temperature sensor connected thereto.

[0034] Optionally, the storage chip on the protection memory stores: classifying and testing the internal temperature change states of the standard protection memory under different external temperature conditions to obtain the internal and external temperature standard data sets of the standard protection memory under different external temperature conditions.

[0035] Optionally, the internal temperature detection element is disposed at the center position or a position close to the center of the inner liner water box, and the external temperature sensor is disposed at an installation position inside the driving recorder close to the protection memory.

[0036] The technical solutions provided by the embodiments of the present application may include the following beneficial effects:

[0037] Classify and test the internal temperature change state of the standard protection memory under different external temperature conditions, and use the temperature change time, change speed, maximum slope value of temperature change, starting values of internal and external temperature changes, and time to reach internal and external temperature balance under different conditions as standard data and store them in the protection memory microcontroller or storage chip. By this technical means, the actual measured similar temperature and time data of individual products in practical applications are compared and calculated with the standard data to accurately evaluate whether the seal of the protection memory is damaged and the degree of damage.

[0038] By setting up a cloud operation and maintenance platform and enabling the driving recorder to communicate with the operation and maintenance platform through a mobile network to upload the status determination information of the protection memory, the effect of remotely monitoring the device status and timely sending device status and fault alarm information to the user is achieved, improving the maintenance efficiency and response speed.

[0039] By performing derivative calculation on the internal temperature change curve data of the protection memory, finding the maximum value of the curve slope, that is, the maximum value of the temperature rise rate, and determining its heating duration, the effect of querying and comparing from the standard parameter set to strengthen the accuracy and reliability of the protection memory seal breakage determination is achieved.

[0040] By taking timed samples before the maximum slope temperature point of the internal temperature change curve of the protection memory over time and further comparing with the standard library, the effect of strengthening the reliability of the determination and more accurately evaluating whether there is an internal liquid leakage and volatilization fault in the protection memory is achieved.

[0041] By measuring the duration of the temperature segment maintained at 0°C inside the water box during the heating process and comparing with the standard library data, and synchronously measuring the change curve and the maximum temperature value of the external temperature of the protection memory, the effect of analyzing whether the water volume in the product has decreased and further improving the reliability of the determination is achieved.

[0042] By using the driving recorder to obtain real-time meteorological data of the location, such as temperature, air pressure and other information, and determining the optimal temperature curve sampling range according to the real-time temperature, the effect of making the determination of the water volume in the water box more accurate is achieved.

[0043] Through the cloud operation and maintenance platform, further analysis is carried out based on the data reported by all devices in each region every day. By means of big data algorithms and other means, the standard database is further optimized, so as to improve the judgment accuracy and achieve the effect of more effectively protecting the health status monitoring of the memory.

[0044] It should be understood that the above general description and the following detailed description are only exemplary and explanatory, and cannot limit this application. Brief Description of the Drawings

[0045] The drawings herein are incorporated into the specification and constitute a part of this specification, showing embodiments consistent with this application, and are used together with the specification to explain the principles of this application.

[0046] Figure 1 It is a schematic flowchart of the monitoring method for the protected memory provided by this application;

[0047] Figure 2 It is a schematic curve diagram of the temperature change (the internal temperature of the device rises from -30°C to 40°C) during the energized operation of the protected memory (water box capacity 35ml) provided by this application at a temperature environment of 20°C;

[0048] Figure 3 It is a schematic diagram of the monitoring system for the protected memory provided by this application;

[0049] Figure 4 It is a schematic diagram of the monitoring device for the protected memory provided by this application. Detailed Description of the Embodiments

[0050] Here, the exemplary embodiments will be described in detail, and the examples are shown in the drawings. When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application. On the contrary, they are only examples of systems and methods consistent with some aspects of this application as detailed in the appended claims.

[0051] In practical applications, when the water box seal is damaged, the liquid in the water box will decrease due to volatilization. When the reduction is small, its protection performance is not greatly affected. However, when the water storage in the water box is 1 / 2 of the initial value, its high-temperature protection performance is only half of that in the full-water state. Therefore, through the following method, this application can timely detect the damage condition of the water box of the protected memory when its high-temperature protection performance remains above 50% and alarm to replace it in time.

[0052] First, the application background of this application will be described to make it easier to understand the inventive concept and implementation principle of this patent.

[0053] Under normal circumstances, water is used as the filling medium for protecting the storage chip in the inner tank water box. The specific heat capacity of water is 4.2×103 J / (kg·℃); the specific heat capacity of ice is 2.1×103 J / (kg·℃). Ice absorbs a large amount of heat when it melts at about 0℃, and the heat of fusion is 339 J / g.

[0054] The protective memory is installed inside the housing of the driving recorder, and the temperature inside the housing is the external temperature of the protective memory. (Hereinafter, the external temperature of the protective memory is defined as Tw, the temperature change rate is ΔTw, the temperature at the center of the water storage box inside the protective memory is Tn, the temperature change rate is ΔTn, the temperature when the product is powered on and running is the starting temperature, and after the product runs for a period of time, the temperature at which the internal and external temperatures tend to be the same is the equilibrium temperature).

[0055] When the vehicle is driving normally, the temperature in the cab usually remains within the range of 20℃±10℃. At this time, the temperature inside the housing of the driving recorder is mostly around 40℃±10℃ affected by the heat dissipation conditions. The temperature in the cab will maintain a stable state about 20 minutes after the vehicle starts, and the temperature inside the driving recorder will also reach 80% of the highest equilibrium temperature in about 20 minutes, and the remaining 20% will reach in the next few hours. Generally speaking, it can be considered that Tw will achieve temperature equilibrium in about 20 minutes. The protective memory has very good heat insulation performance inside, and the specific heat capacity of the hydrogel in the water box is also relatively high, so the change of Tn is smaller and slower than the change of Tw. Tn will be much lower than Tw for a long time after the driving recorder is powered on and running.

[0056] Therefore, this application takes water as an example for illustration, but the principle of filling other media is the same, so it should also fall within the protection scope of this patent.

[0057] Please refer to Figure 1 , which is a flowchart of the monitoring method for the protective memory provided by an exemplary embodiment of this application, including the following steps:

[0058] Step S1: Classify and test the internal temperature change state of the standard protective memory under different external temperature conditions to obtain the internal and external temperature standard data sets of the standard protective memory under different external temperature conditions. Specifically, first determine the test conditions, including the temperature change time, change speed, temperature change slope value, and the starting values of the internal and external temperature changes and the time to reach the internal and external temperature equilibrium under different conditions. Then, place the protective memory under these preset temperature conditions and record its temperature change data to form a standard data set. Among them, different conditions include but are not limited to: the model of the protective memory, the liquid volume in the inner tank water box, the external temperature of the inner tank water box, and the internal temperature.

[0059] Step S2: Obtain the data information of the temperature change over time inside and outside the actual protective memory to be measured respectively, and compare these data information with the above standard data set. Exemplarily, the above data information can be recorded and presented in the form of a change curve. Specifically, the temperature change is monitored in real time by temperature sensors arranged inside and outside the protective memory and recorded as curve data.

[0060] Step S3: Determine the state of the protective memory corresponding to the change curve. Specifically, by analyzing the matching degree between the monitored temperature curve and the standard data set, it is judged whether the protective memory is in a normal state or there is an abnormality.

[0061] Step S4: When the state of the protective memory corresponds to a preset water box breakage classification, an alarm prompt is given. Specifically, once the abnormal state of the protective memory is detected, the system will automatically trigger an alarm mechanism to remind the user to check or replace it.

[0062] Exemplarily, the classification test conditions of the standard data set include the internal temperature change time, change speed, temperature change slope value, and the starting values of the internal and external temperature changes and reaching the internal and external temperature balance under different external temperature conditions. Among them: Temperature change time: Different time periods are set, and the temperature changes of the protective memory within these time periods are recorded. Change speed: Measure the rate of temperature change within a specific time period. Temperature change slope value: Calculate the slope of the temperature change curve to obtain the maximum slope value of the temperature change.

[0063] Perform derivative calculation on the internal temperature change curve data of the protective memory to obtain the maximum value of its curve slope, that is, the maximum value of its temperature rise rate, and determine its heating duration, and query and compare it from the standard data set. The specific implementation method is as follows:

[0064] Perform a mathematical derivative calculation on the monitored internal temperature change curve of the protective memory to determine the slope change of the curve. Extract the maximum value of the slope from the calculation results, which represents the maximum value of the temperature rise rate. Record the time required to reach the maximum slope value, that is, the heating duration.

[0065] Compare the calculated maximum slope value and heating duration with the corresponding values in the standard data set to evaluate the state of the protective memory.

[0066] Optionally, sample the temperature before the maximum slope temperature point of the curve of the internal temperature change of the protective memory over time at regular time intervals and compare it with the standard data set for further comparison to enhance the reliability of the determination. Exemplarily, the method is as follows:

[0067] Determine the temperature point corresponding to the maximum slope on the internal temperature curve of the protective memory.

[0068] Before this temperature point, select a time period to sample the temperature data. Optionally, this time can be from 1 to 60 minutes, and this embodiment does not limit this.

[0069] Compare the sampled temperature data with the corresponding data in the standard dataset to verify the consistency of the monitoring results.

[0070] Optionally, similarly, it is also possible to sample the temperature curve at regular time intervals after the initial temperature inside the protective memory and further compare it with the standard dataset to enhance the reliability of the determination.

[0071] Optionally, determine the change curve and the maximum temperature value of the external temperature of the protective memory. When the external temperature of the protective memory is greater than 0°C and the initial temperature inside the water box is less than 0°C, measure the duration of the temperature segment at 0°C maintained inside the water box during the heating process and compare it with the standard dataset to determine whether the liquid in the water box leaks.

[0072] Specifically, monitor and record the change curve and the maximum temperature value of the external temperature of the protective memory. When the external temperature is greater than 0°C, monitor the duration of the temperature segment at 0°C maintained inside the water box during the heating process. Compare the monitored duration of the 0°C temperature segment with the corresponding data in the standard dataset to determine whether there is leakage of the liquid in the water box.

[0073] Figure 2 is the change curve of a protective memory (water box capacity 35 ml) with an initial temperature of -30°C when powered on and operating at an external environmental temperature of 20°C, roughly equivalent to a state where the room temperature inside the cab is 5°C to 10°C, the temperature rise inside the driving recorder is 15°C, and Tw is around 20°C. Figure 2 The two curves in are the temperature change curves (Tn) inside the water box of the protective memory. CH1 is the Tn curve in the full water state, CH2 is the Tn curve in the 1 / 2 water volume state, and another CH4 curve is the external environmental temperature Tw curve of the protective memory.

[0074] It can be seen from the figure that the change trend of the Tn curve can be divided into three stages. The first stage is the curve where the Tn temperature is below 0°C. It can be seen that there is a large difference in the slopes of the temperature rise curves of the half-water and full-water states. The middle stage is the curve when the water in the hydrogel changes from the solid (ice) phase to the liquid phase. The water volume in the full-water box is twice that of the half-water box, so the time for the full-water box to maintain 0°C (the temperature in the ice-water mixture state) is also twice that of the half-water box state. The third stage is the temperature rise curve when the Tn of the two-state water box reaches above 0°C. Since the specific heat capacity of water is higher than that of ice, the temperature rise slope in this stage is smaller than that in the first stage, and the time to reach the highest temperature point is longer.

[0075] The protective memory is a standard mass-produced product. The heat insulation material, the volume of the internal water box, the water injection volume, and the composition and quantity of the gel material are all the same. Therefore, the specific heat capacity and heat insulation ability of different individual products do not vary much. Exemplarily, for the finished protective memory Tw, temperature curves starting from 51 temperature points from 10°C to 60°C and Tn starting from 106 temperature points from -30°C to 75°C can form at least 5406 sets of information on the temperature rise slope and the time length from the starting temperature to the highest temperature value when the integer temperature values are obtained. The data is stored in the protective memory. In actual applications, the protective memory can select the external temperature information or obtain the highest value of Tw from the driving recorder processor, and this value should be within 10°C to 60°C. We compare the obtained Tw value and the temperature change curve of the internal water box measured by the protective memory with the standard change curve stored in advance. By comparing the temperature rise slope of Tn and the time length to reach the highest value of Tw, it can be evaluated whether there is a fault of internal liquid leakage and volatilization in the protective memory. When the running time of the driving recorder is long and Tn is equal to Tw, by dividing the time value to reach the highest temperature by the standard time, the two should be in an equal proportion relationship, that is, the non-leakage ratio should be approximately 1, and the half-leakage ratio should be approximately 1 / 2. In this way, the liquid leakage situation of the protective memory can be determined more accurately, and reported and replaced in real time, timely and actively.

[0076] According to another embodiment of the present application, the present application also provides a monitoring system for a protective memory. Please refer to Figure 3 , the system includes:

[0077] A test module 301, configured to: classify and test the internal temperature change state of a standard protective memory under different external temperature conditions to obtain an internal and external temperature standard data set of the standard protective memory under different external temperature conditions;

[0078] A detection module 302, respectively obtaining data information on the temperature change with time inside and outside the actual protective memory to be tested, and comparing the data information with the standard data set;

[0079] A judgment module 303, configured to: determine the state of the protective memory corresponding to the data information; when the state of the protective memory corresponds to a preset water box breakage classification, give an alarm prompt. According to another embodiment of the present application, the present application also provides a monitoring device for a protective memory. Please refer to Figure 4 , the device includes: a protective memory and a driving recorder main board;

[0080] The protective memory includes a storage chip and a microcontroller, and a temperature detection element for monitoring the temperature of the inner tank water box;

[0081] The driving recorder main board includes a driving recorder CPU and a temperature sensor connected thereto.

[0082] Exemplarily, the storage chip on the protection memory stores: classifying and testing standard products under different temperature conditions to obtain standard data sets under different temperature conditions. The temperature sensor or the microcontroller communicates with the CPU of the driving recorder through I2C or other communication interfaces.

[0083] Among them, the temperature detection element is arranged at the center position or a position close to the center of the inner tank water box to detect the temperature in the inner tank water box, and the temperature sensor is arranged at an installation position inside the driving recorder close to the protection memory to detect the temperature outside the inner tank water box. Since the temperature of the driving recorder will rise during operation, the solution in this application can monitor the internal temperature rise trend and external temperature rise trend of the inner tank water box in real time. When there are differences in the liquid volume in the water box, under a certain external temperature, the temperature rise time and speed in the inner tank water box will also be different. The design provided in this application is based on this principle and can accurately judge whether the liquid in the water box has volatilized or decreased. This design not only improves the monitoring accuracy, but also enhances the reliability and response speed of the system, ensuring that the health status of the protection memory can be monitored in a timely and effective manner.

[0084] Those skilled in the art will readily think of other embodiments of this application after considering the specification and practicing the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of this application, which follow the general principles of this application and include common general knowledge or conventional technical means in the technical field not disclosed in this application. The specification and examples are only regarded as exemplary, and the true scope and spirit of this application are pointed out by the following claims.

[0085] It should be understood that this application is not limited to the precise structures described above and shown in the drawings, and various modifications and changes can be made without departing from its scope. The scope of this application is only limited by the appended claims.

Claims

1. A monitoring method for a protection memory, characterized in that: The following steps are involved: S1 performs classification tests on the internal temperature change states of the standard protection memory under different external temperature conditions to obtain a standard data set of internal and external temperatures of the standard protection memory under different external temperature conditions; S2 respectively obtains data information of temperature changes over time inside and outside the actual protection memory to be tested, and compares the data information with the standard data set; S3 determines the protection memory state corresponding to the data information; S4: When the state of the protection storage corresponds to the preset water box damage classification, an alarm is issued.

2. The method according to claim 1, characterized in that Generate a change curve based on data information; The classification test conditions of the standard data set include: internal and external temperature change time, change speed, temperature change slope value and internal and external temperature change starting value and time to reach internal and external temperature balance under different external temperature conditions.

3. The method according to claim 2, characterized in that The step S2 comprises: The derivative of the temperature change curve data inside the protection memory is calculated to obtain the maximum value of the slope of the curve, that is, the maximum value of the temperature rise rate, and the temperature rise time is determined, and then queried and compared from the standard data set.

4. The method according to claim 3, characterized in that The method further comprises: The temperature before the temperature point with the maximum slope of the curve of the internal temperature of the protection memory changing with time is sampled at regular intervals and further compared with the standard data set to enhance the reliability of the judgment.

5. The method according to claim 3, characterized in that: The temperature curve after the initial temperature inside the protection memory is sampled at regular intervals and further compared with the standard data set to enhance the reliability of the judgment.

6. The method according to claim 2, characterized in that The step S2 comprises: Determine the change curve and maximum temperature value of the external temperature of the protective storage. When the external temperature of the protective storage is greater than 0°C and the starting temperature inside the water box is less than 0°C, measure the length of time the temperature inside the water box remains at 0°C during the heating process and compare it with the standard data set to determine whether the liquid in the water box is leaking.

7. The method according to claim 2, characterized in that: The method further includes: sending data information of temperature changes over time inside and outside the protection memory to a cloud operation and maintenance platform, wherein the cloud operation and maintenance platform stores a standard data set: The cloud operation and maintenance platform further records and analyzes the uploaded status temperature information, compares it with the historical status information, and sends a warning message to the user.

8. A monitoring system for a protection memory, characterized in that: The system comprises: The test module is configured to: perform classification tests on the internal temperature change states of the standard protection memory under different external temperature conditions to obtain a standard data set of internal and external temperatures of the standard protection memory under different external temperature conditions; A detection module, respectively obtaining data information of temperature changes over time inside and outside the actual protection memory to be tested, and comparing the data information with the standard data set; The judgment module is configured to: determine the state of the protection memory corresponding to the data information; and issue an alarm when the state of the protection memory corresponds to a preset water box damage classification.

9. The system according to claim 8, characterized in that The internal and external temperature change time, change speed, temperature change slope value, internal and external temperature change starting value and the time to reach internal and external temperature equilibrium under different external temperature conditions.

10. The system according to claim 9, characterized in that The detection module is configured to: perform derivative calculation on the temperature change curve data inside the protection memory to obtain the maximum value of the curve slope, that is, the maximum value of the temperature rise rate, and determine the temperature rise time, and query and compare from the standard data set.

11. The system according to claim 10, characterized in that The detection module is configured to: perform timed sampling of the temperature before the temperature point with the maximum slope of the curve of the internal temperature of the protection memory changing with time, perform timed sampling of the temperature curve after the internal starting temperature of the protection memory, and further compare it with the standard data set to enhance the reliability of the judgment.

12. The system according to claim 9, characterized in that The detection module is configured to: determine the change curve and maximum temperature value of the external temperature of the protective storage device; when the external temperature of the protective storage device is greater than 0°C and the initial temperature inside the water box is less than 0°C, measure the length of time the temperature inside the water box is maintained at 0°C during the heating process, and compare it with the standard data set to determine whether the liquid in the water box is leaking.

13. The system according to claim 9, characterized in that The system further includes a sending module and a cloud operation and maintenance platform. The sending module is configured to send data information of temperature changes inside and outside the protection storage device over time to the cloud operation and maintenance platform, in which a standard data set is stored: The cloud operation and maintenance platform is configured to: conduct further analysis based on the data regularly reported by all devices in each region, further optimize the standard data set through big data algorithms, further record and analyze the uploaded status temperature information, compare it with the historical status information, and send warning information to users.

14. A monitoring device for a protective storage device, characterized in that: The device includes: a protection memory and a driving recorder mainboard; The protection memory includes a storage chip and a microcontroller, and a temperature detection element for monitoring the temperature of the inner tank water box; The driving recorder mainboard includes a driving recorder CPU and a temperature sensor connected thereto.

15. The device according to claim 14, characterized in that The storage chip on the protection memory stores: classification test of the internal temperature change state of the standard protection memory under different external temperature conditions, to obtain the internal and external temperature standard data set of the standard protection memory under different external temperature conditions.

16. The device according to claim 14, characterized in that The internal temperature detection element is arranged at the center position or a position close to the center of the inner water box, and the external temperature sensor is arranged at an installation position close to the protection memory inside the driving recorder.

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