Monitoring equipment for protective memory

Abstract

The utility model relates to a monitoring system for a protection memory, and the system comprises a test module which is configured to carry out the classification test of the internal temperature change states of a standard protection memory under different external temperature conditions, and obtains the internal and external temperature standard data sets of the standard protection memory under different external temperature conditions; the detection module is used for respectively acquiring data information of temperature change along with time inside and outside the actual to-be-detected protective memory, and comparing the data information with the standard data set; the judgment module is configured to determine a protection memory state corresponding to the data information; when the state of the protection storage corresponds to the preset water box damage classification, an alarm prompt is given. 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] The present application relates to the field of protective storage for automobile traveling recorders, in particular to a monitoring device for protective storage. BACKGROUND

[0002] The existing protective storage for automobile traveling recorders is generally composed of a shell, a nano-material heat insulation plate, an internal water box and a storage chip PCBA board. The amount of water or liquid stored in the internal water box and the sealing performance are directly related to the high-temperature protection capability of the protective storage. Due to production process problems, the water box may leak, resulting in protection failure during the product life cycle. However, the current various products lack a means to monitor the change in the amount of water or liquid stored in the water box and the sealing performance of the water box. CONTENT OF THE UTILITY MODEL

[0003] To solve the above problems, the present application provides a monitoring method for protective storage, comprising the following steps:

[0004] A monitoring method for protective storage, comprising the following steps:

[0005] S1 classifies and tests the internal temperature variation state of a standard protective storage under different external temperature conditions to obtain a standard data set of the internal and external temperatures of the standard protective storage under different external temperature conditions;

[0006] S2 obtains data information of the internal and external temperatures of an actual protective storage to be tested varying with time, and compares the data information with the standard data set;

[0007] S3 determines the state of the protective storage corresponding to the data information;

[0008] S4 when the state of the protective storage corresponds to a preset water box damage classification, an alarm is prompted.

[0009] Optionally,

[0010] A change curve is generated based on the data information.

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

[0012] Optionally, the step S2 comprises:

[0013] The derivative of the internal temperature variation curve data of the protective storage is calculated to obtain the maximum value of the curve slope, i.e. the maximum value of the temperature rise rate, and the temperature rise duration is determined, and the comparison is made from the standard data set.

[0014] Optionally, the method further comprises:

[0015] Optionally, the temperature before the maximum slope temperature point of the temperature curve of the internal temperature of the protective storage over time is sampled for a time period, and further compared with the standard data set to enhance the reliability of the determination.

[0016] Optionally, the temperature curve after the initial temperature of the internal temperature of the protective storage is sampled for a time period, and further compared with the standard data set to enhance the reliability of the determination.

[0017] Optionally, the step S2 comprises:

[0018] Optionally, the change curve and the highest temperature value of the external temperature of the protective storage are determined, and when the external temperature of the protective storage is greater than 0℃ and the initial temperature inside the water box is less than 0℃, the length of the temperature segment inside the water box that maintains 0℃ during the temperature rising process is determined and compared with the standard data set to determine whether the liquid in the water box is leaking.

[0019] Optionally, the method further comprises: sending the data information of the temperature change over time of the internal and external temperatures of the protective storage to a cloud operation and maintenance platform, wherein the cloud operation and maintenance platform stores a standard data set:

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

[0021] In another aspect, the application also provides a monitoring system for a protective storage, the system comprising:

[0022] A test module configured to: classify and test the internal temperature change states of standard protective storages under different external temperature conditions to obtain an internal and external temperature standard data set of the standard protective storages under different external temperature conditions;

[0023] A detection module connected with the test module, configured to: respectively acquire data information of the temperature change over time of the internal and external temperatures of an actual protective storage to be tested, and compare the data information with the standard data set;

[0024] A judgment module connected with the detection module, configured to: determine the state of the protective storage corresponding to the data information; and when the state of the protective storage corresponds to a preset water box damage classification, perform an alarm prompt.

[0025] Optionally, the internal and external temperature change time, change speed, temperature change slope value, and internal and external temperature change initial value and time to reach internal and external temperature balance under different external temperature conditions.

[0026] Optionally, the detection module is configured to: perform derivative calculation on the internal temperature change curve data of the protective 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 duration, and query and compare from the standard data set.

[0027] Optionally, the detection module is configured to: sample the temperature before the maximum slope temperature point of the internal temperature change curve of the protective memory over time, sample the temperature curve after the initial temperature of the protective memory, and further compare with the standard data set, and further compare with the standard data set to enhance 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 protective memory, when the external temperature of the protective memory is greater than 0℃ and the initial temperature inside the water box is less than 0℃, determine the temperature segment duration of the water box inside which keeps 0℃ during the temperature rise process, and compare with the standard data set to determine whether the liquid in the water box leaks.

[0029] Optionally, the system further comprises a sending module and a cloud operation and maintenance platform, and the sending module is configured to: send the data information of the temperature change over time inside and outside the protective memory to the cloud operation and maintenance platform, and the cloud operation and maintenance platform stores a standard data set:

[0030] The cloud operation and maintenance platform is configured to: further analyze the data periodically reported by all devices in each region, further optimize the standard data set through big data algorithm, further record and analyze the state temperature information uploaded by the cloud operation and maintenance platform, compare with the historical state information, and send warning information to the user.

[0031] On the other hand, the application also provides a monitoring device of a protective memory, which comprises: a protective memory and a driving recorder mainboard.

[0032] The protective memory comprises a storage chip and a microcontroller, and a temperature detection element for monitoring the temperature of the water box inside the liner.

[0033] The driving recorder mainboard comprises a driving recorder CPU and a temperature sensor connected thereto.

[0034] Optionally, the storage chip on the protective memory stores: classified test on the internal temperature change state of the standard protective memory under different external temperature conditions, to obtain the internal and external temperature standard data set of the standard protective memory under different external temperature conditions.

[0035] Optionally, the internal temperature detecting element is arranged at a central position or a position close to the central position of the water box, and the external temperature sensor is arranged at a mounting position close to the protective memory inside the driving recorder.

[0036] The technical scheme provided by the embodiments of the present application can have the following beneficial effects:

[0037] The internal temperature variation state of the standard protective memory under different external temperature conditions is classified and tested, and the temperature variation time, variation speed, maximum slope value of temperature variation, initial value of internal and external temperature variation, and time for reaching internal and external temperature balance under different conditions are stored as standard data in the protective memory microcontroller or storage chip, so that the same temperature and time data actually measured in the actual application of individual products are compared and calculated with the standard data, and the effect of accurately evaluating whether the protective memory seal is damaged and the damage degree is achieved.

[0038] By setting the cloud operation and maintenance platform and enabling the driving recorder to communicate with the operation and maintenance platform through the mobile network and upload the protective memory state determination information, the effect of remotely monitoring the equipment state and timely sending the equipment state and fault alarm information to the user is achieved, and the maintenance efficiency and response speed are improved.

[0039] By performing derivative calculation on the internal temperature variation curve data of the protective memory, the maximum value of the curve slope, i.e., the maximum value of the temperature rise rate, is obtained, and the temperature rise duration is determined, so that the standard parameter set is queried and compared, and the accuracy and reliability of the protective memory seal damage determination are enhanced.

[0040] By performing timed period sampling before the maximum slope temperature point of the internal temperature variation curve of the protective memory with time, and further comparing with the standard library, the reliability of the determination is enhanced, and the effect of more accurately evaluating whether the protective memory has internal liquid leakage and volatilization failure is achieved.

[0041] By determining the duration of the temperature segment maintained at 0℃ in the water box during the temperature rise process and comparing with the standard library data, and simultaneously measuring the variation curve and the maximum temperature value of the external temperature of the protective memory, the effect of analyzing whether the water amount in the product has decreased is achieved, and the reliability of the determination is further improved.

[0042] By obtaining real-time meteorological data such as air temperature and air pressure of the region where the driving recorder is located, and determining the optimal temperature curve sampling range according to the real-time air temperature, the effect of making the determination of the water amount in the water box more accurate is achieved.

[0043] Through the cloud operation and maintenance platform, the data reported by all devices in each region every day is further analyzed, and the standard database is further optimized through big data algorithm and other technical means, so that the determination accuracy is improved, and the effect of more effective protection of the memory health state monitoring is realized.

[0044] It should be understood that the above general description and the following detailed description are only exemplary and explanatory, and cannot limit the present application. BRIEF DESCRIPTION OF DRAWINGS

[0045] The accompanying drawings, which are incorporated into and form part of the specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the application.

[0046] Figure 1 is a monitoring method flowchart of the protective storage provided by the present application;

[0047] Figure 2 is a curve diagram of the temperature change of the protective storage (water box capacity 35ml) in the process of power-on operation in a temperature environment of 20℃ (the temperature in the device rises from-30℃ to 40℃);

[0048] Figure 3 is a monitoring system diagram of the protective storage provided by the present application;

[0049] Figure 4 is a monitoring device diagram of the protective storage provided by the present application. DETAILED DESCRIPTION

[0050] The exemplary embodiments will be described in detail herein with reference to the accompanying drawings. When the following description refers to the drawings, the same numbers in different drawings represent the same or similar elements unless otherwise indicated. The implementations described in the following exemplary embodiments do not represent all implementations consistent with the present application. Instead, they are merely examples of systems and methods consistent with some aspects of the present application as detailed in the appended claims.

[0051] In real applications, when the water box seal is damaged, the liquid in the water box will decrease due to evaporation. When the decrease is small, it has little effect on its protective performance. However, when the water storage in the water box is 1 / 2 of the initial value, its high-temperature protective performance is only half of that when it is full. Therefore, through the following method, the present application can discover the damage of the water box and alarm in time when the high-temperature protective performance of the protective storage is maintained at more than 50%, so as to replace it in time.

[0052] First, the application background of the present application is described in order to more easily understand the utility model concept and implementation principle of the present patent.

[0053] Generally, water is used as the filling medium in the inner container water box to protect the storage chip. The specific heat capacity of water is 4.2 x 10 3 J / (kg·℃); the specific heat capacity of ice is 2.1 x 10 3 J / (kg·℃). Ice absorbs a large amount of heat when it melts at around 0℃, and the heat of fusion is 339 J / g.

[0054] The protective memory is installed in the driving recorder shell, and the temperature inside the shell 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 box inside the protective memory is defined as Tn, the temperature change rate is ΔTn, the temperature when the product is powered on and running is the initial temperature, and the temperature after the product runs for a period of time is the temperature at which the internal and external temperatures tend to be consistent, which is the equilibrium temperature.)

[0055] When the vehicle is running normally, the temperature in the cab will generally be maintained within the range of 20℃±10℃, at which time the temperature inside the driving recorder shell will be affected by the heat dissipation conditions and will mostly be around 40℃±10℃. The temperature in the cab will be maintained stable about 20 minutes after the vehicle starts, and the temperature inside the driving recorder shell will also reach about 80% of the highest equilibrium temperature about 20 minutes later, and the remaining 20% will be reached within the next few hours. In summary, it can be considered that Tw will achieve temperature balance about 20 minutes later. The protective memory has very good heat insulation performance, and the specific heat capacity of the water-containing gel in the water box is also relatively high, so the change of Tn will be smaller and slower than that of Tw. Tn will be much lower than Tw for a long time after the driving recorder is powered on and running.

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

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

[0058] S1 step: 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 set 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 internal and external temperature change starting value and time to reach internal and external temperature balance under different conditions. Then, place the protective memory under these preset temperature conditions, and record the temperature change data to form a standard data set. The different conditions include but are not limited to: protective memory model, liquid amount in the inner container water box, temperature outside the inner container water box, and internal temperature.

[0059] S2 step: respectively acquire the data information of the actual internal and external temperature changes of the protective storage over time, and compare these data information with the above-mentioned standard data set. Exemplarily, the above-mentioned data information can be recorded and presented in the form of a change curve. Specifically, the temperature change is monitored in real time by the temperature sensors arranged inside and outside the protective storage, and recorded as curve data.

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

[0061] S4 step: when the state of the protective storage corresponds to a preset water box damage classification, an alarm prompt is performed. Specifically, once the abnormal state of the protective storage is monitored, the system automatically triggers an alarm mechanism to remind the user to check or replace.

[0062] Exemplarily, the classification test conditions of the standard data set include internal temperature change time, change speed, temperature change slope value, and internal and external temperature change starting value and internal and external temperature balance under different external temperature conditions. Among them: temperature change time: set different time periods, and record the temperature change of the protective storage in these time periods. Change speed: measure the rate of temperature change in 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] The derivative of the internal temperature change curve data of the protective storage 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 duration is determined, which is queried and compared from the standard data set. The specific implementation is as follows:

[0064] The derivative of the monitored internal temperature change curve of the protective storage is calculated mathematically to determine the slope change of the curve. The maximum value of the slope is extracted from the calculation result, which represents the maximum value of the temperature rise rate. The time required to reach the maximum slope value, that is, the temperature rise duration, is recorded.

[0065] The calculated maximum slope value and temperature rise duration are compared with the corresponding values in the standard data set to evaluate the state of the protective storage.

[0066] Optionally, the temperature before the maximum slope temperature point of the internal temperature change curve of the protective storage over time is sampled for a timing period, and further compared with the standard data set 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 storage.

[0068] Before the temperature point, a time period is selected for sampling the temperature data. Optionally, the time can be 1 to 60 minutes, which is not limited in the embodiment.

[0069] The sampled temperature data is compared with the corresponding data in the standard data set to verify the consistency of the monitoring result.

[0070] Optionally, the temperature curve after the initial temperature of the protective storage is also sampled for a time period, and further compared with the standard data set to enhance the reliability of the determination.

[0071] Optionally, the change curve and the highest temperature value of the temperature outside the protective storage are determined, when the temperature outside the protective storage is greater than 0℃ and the initial temperature inside the water box is less than 0℃, the time length of the temperature inside the water box maintaining 0℃ during the temperature rising process is determined and compared with the standard data set to determine whether the liquid in the water box leaks.

[0072] Specifically, the change curve and the highest temperature value of the temperature outside the protective storage are monitored and recorded. When the temperature outside is greater than 0℃, the time length of the temperature inside the water box maintaining 0℃ during the temperature rising process is monitored. The time length of the temperature maintaining 0℃ is compared with the corresponding data in the standard data set to determine whether the liquid in the water box leaks.

[0073] Figure 2 is the change curve of the protective storage (water box capacity 35ml) with an initial temperature of -30℃ under the condition of being powered on at an external environment temperature of 20℃, which is roughly equivalent to the state that the room temperature in the cab is 5℃-10℃, the temperature in the traveling data recorder machine rises by 15℃, and Tw is about 20℃. Figure 2 The two curves in the middle are the temperature change curves (Tn) of the water box inside the protective storage, CH1 is the Tn curve under the condition of full water, CH2 is the Tn curve under the condition of half water, and the other CH4 curve is the external environment temperature Tw curve of the protective storage.

[0074] As can be seen from the figure, the change trend of the Tn curve can be divided into three stages. The first stage is the curve of Tn temperature below 0℃, and it can be seen that there is a large difference in the slope of the temperature rising curve between the half water and full water. The middle stage is the curve when the water in the hydrogel changes from solid (ice) to liquid. The water amount in the full water box is twice that of the half water box, so the time of maintaining 0℃ (the temperature in the ice-water mixture state) of the full water box is also twice that of the half water box. The third stage is the temperature rising curve when Tn of the two kinds of water boxes reaches above 0℃. Since the specific heat capacity of water is higher than that of ice, the temperature rising slope in this stage is smaller than that in the first stage, and the time to reach the highest temperature is longer.

[0075] The protective storage is a standard mass production product, and the heat insulation material, internal water box volume, water injection amount, and gel material composition and quantity are consistent, so the specific heat capacity and heat insulation capacity of different individual products are not much different. For example, the temperature curve of the finished protective storage Tw at 51 temperature points of 10°C to 60°C and Tn from the starting temperature of -30°C to 75°C at 106 temperature points can form at least 5406 groups of integer temperature value temperature rise slope and temperature from the starting to the highest temperature value length information. The data is stored in the protective storage, and in actual application, the protective storage can select external temperature information or obtain the highest value of Tw from the driving recorder processor, which should be within 10°C to 60°C. We compare the Tw value obtained and the Tn temperature change curve measured by the protective storage with the standard change curve achieved by storage, and through the comparison of the Tn temperature rise slope and the time length of reaching the highest value of Tw, whether the protective storage has internal liquid leakage and volatilization failure can be evaluated. When the driving recorder runs for a long time and Tn is equal to Tw, the time value of reaching the highest temperature can be divided by the standard time, and the two should be in a proportional relationship, that is, the leakage liquid ratio should be about 1, and the leakage liquid half ratio should be about 1 / 2, so that the leakage of the protective storage can be accurately judged, and the real-time and timely active reporting and replacement can be performed.

[0076] According to another embodiment of the present application, the present application also provides a monitoring system of a protective storage, please refer to Figure 3 , the system comprises:

[0077] The test module 301 is configured to classify and test the internal temperature change state of the standard protective storage under different external temperature conditions to obtain the internal and external temperature standard data set of the standard protective storage under different external temperature conditions.

[0078] The detection module 302 is connected with the test module 301, and respectively obtains the data information of the temperature change of the actual protective storage to be tested inside and outside with time, and compares the data information with the standard data set.

[0079] The judgment module 303 is connected with the detection module 302 and is configured to determine the state of the protective storage corresponding to the data information, and when the state of the protective storage corresponds to the preset water box damage classification, an alarm prompt is performed. According to another embodiment of the present application, the present application also provides a monitoring device of a protective storage, please refer to Figure 4 , the device comprises a protective storage and a driving recorder mainboard.

[0080] The protective storage comprises a storage chip and a microcontroller, and a temperature detection element for monitoring the temperature of the inner container water box.

[0081] The driving recorder mainboard comprises a driving recorder CPU and a temperature sensor connected to the driving recorder CPU.

[0082] The storage chip on the protection memory stores, for example, standard data sets obtained by classifying and testing standard products under different temperature conditions. The temperature sensor or microcontroller communicates with the CPU of the driving recorder through an I2C or other communication interface.

[0083] The temperature detection element is arranged at the center or near the center of the inner container water box to detect the temperature in the inner container water box, and the temperature sensor is arranged at the mounting position of the protection memory inside the driving recorder to detect the temperature outside the inner container water box. Since the temperature of the driving recorder rises when it is working, the scheme in the application can monitor the internal and external temperature rising trends of the inner container water box in real time. When the amount of liquid in the water box is different, the temperature rising time and speed in the inner container water box will also be different under the condition of constant external temperature. The design provided by the application can accurately judge whether the liquid in the water box is volatilized or reduced based on this principle. 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 time and effectively.

[0084] Other embodiments of the application will be apparent to those skilled in the art from consideration of the specification and practice of the application disclosed herein. It is intended that the application be limited only by the scope of the claims, including any appropriate amendments thereof, and that there be accounted to be encompassed by the true spirit and scope of the application all modifications thereof equivalent to those which are specifically recited. The specification and examples given herein are to be considered exemplary only, and the true scope and spirit of the application were indicated by the following claims.

[0085] It should be understood that the application is not limited to the precise construction that has been described above and illustrated in the accompanying drawings, and that various modifications and changes can be made by those skilled in the art without departing from the scope of the application. The scope of the application should only be limited by the appended claims.

Claims

1. A monitoring device for protecting a memory, characterized in that The device comprises a protective memory and a tachograph mainboard; The protective memory comprises a storage chip and a microcontroller, and a temperature detection element for monitoring the temperature of the inner container water box; The tachograph mainboard comprises a tachograph CPU and a temperature sensor connected thereto; The storage chip on the protective memory stores the following: classification test on the internal temperature change state of the standard protective memory under different external temperature conditions, to obtain the internal and external temperature standard data set of the standard protective memory under different external temperature conditions.

2. The apparatus of claim 1, wherein, The internal temperature detection element is arranged at the center or near the center of the inner container water box, and the external temperature sensor is arranged at the installation position of the tachograph close to the protective memory.

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