Data security transmission method for industrial data intelligent terminal

Abstract

The invention relates to the technical field of data security transmission, in particular to a data security transmission method for an industrial data intelligent terminal, and the method comprises the steps: obtaining minute-level high-frequency voltage collection data, judging a power failure early warning risk based on the collection data, and determining a power failure state analysis mode which comprises a high early warning risk and a low early warning risk; obtaining a wiring mode of the electric energy meter and the intelligent terminal in response to the high early warning risk state, determining a transparent reading method of a voltage value of the electric energy meter based on the wiring mode so as to judge whether to send out a power failure early warning, and obtaining a current operation frequency of the intelligent terminal in response to a result of sending out the power failure early warning, and the power recovery probability within the preset time is calculated in combination with the voltage value subjected to the transparent reading so as to determine a power recovery mode, the power recovery mode is determined to be manual intervention or automatic power recovery, the comparison condition of the storage voltage value and the reference voltage is determined, the power recovery state is judged, whether a power recovery notification is sent or not is determined, and the power recovery efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of secure data transmission, and in particular to a secure data transmission method for an industrial data intelligent terminal. Background Art

[0002] my country's industry is developing rapidly, and industrial electricity consumption is growing steadily. At the same time, the demand for stable power systems and timely power restoration is also gradually increasing. The industrial data intelligent terminal is an i-series industrial data intelligent terminal product independently developed by China Southern Power Grid Big Data Service Co., Ltd. This intelligent terminal has greatly improved the power supply bureau's ability to quickly and safely obtain and locate power outages, respond to customers, and monitor the progress of power restoration. It can meet the needs of complex industrial site environments and is especially suitable for networked cloud platform application projects where equipment is locally concentrated and sites are relatively discretely distributed.

[0003] Chinese patent publication number: CN111181513A, discloses a data security transmission circuit, device and equipment, including: frequency acquisition module 1, frequency acquisition module 2, differential adjustment module, the frequency acquisition module 1, frequency acquisition module 2 use frequency collector J1 and frequency collector J2 of model SJ-ADC to collect the carrier signal frequency of adjacent data channels, the differential adjustment module uses operational amplifier AR1, operational amplifier AR2, operational amplifier AR3 to form a differential operational amplifier circuit to differentially-amplify and adjust the output signals of frequency acquisition module 1 and frequency acquisition module 2, and uses capacitor C3-capacitor C5 to form a frequency selection circuit to filter out a single frequency signal, and uses transistor Q1 and transistor Q2 to form a fine-tuning circuit to perform potential detection and adjustment on the signal, and finally uses operational amplifier AR5 and diode D3 and diode D4 to form a peak circuit to filter out the peak signal to trigger the signal transmitter E1 to work.

[0004] However, there are still the following problems in the prior art:

[0005] In actual situations, when a sudden power outage occurs, the service center will receive a large number of consultation calls, resulting in a significant increase in customer service call volume and work order volume, which reduces response efficiency. Especially for industrial parks, sudden power outages will affect the work of the industrial parks and reduce efficiency. If they are not handled in a timely manner and the power restoration progress is not synchronized, the power outage time will increase and the power restoration speed will slow down. Summary of the invention

[0006] To this end, the present invention provides a data security transmission method for industrial data intelligent terminals to solve the problem that in actual situations, when a sudden power outage occurs, the service center will receive a large number of consultation calls, resulting in a significant increase in customer service call volume and work order volume, and reducing response efficiency. Especially for industrial parks, sudden power outages will affect the work of the industrial parks and reduce efficiency. If they are not handled in time and the power restoration progress is synchronized, the power outage time will increase and the power restoration speed will slow down.

[0007] To achieve the above object, the present invention provides a data security transmission method for an industrial data intelligent terminal, which comprises:

[0008] Obtain minute-level high-frequency voltage data collected by the intelligent terminal and determine the power outage warning risk based on the collected data, and determine the power outage status analysis method, wherein:

[0009] If the voltage curve breaks at two consecutive points and / or within two minutes, the power outage warning risk is determined to be a high warning risk;

[0010] Or, the power outage warning risk is determined to be a low warning risk;

[0011] In response to the high warning risk state, a connection mode between the electric energy meter and the smart terminal is obtained, and a transparent reading method of the voltage value of the electric energy meter is determined based on the connection mode to determine whether to issue a power outage information, wherein:

[0012] If the wiring mode is not single-phase, the voltage value of the ABC three-phase voltage is copied and the timeout is set to 60 seconds;

[0013] If the wiring mode is single-phase, read the voltage value of the electric energy meter and set the timeout to 60 seconds;

[0014] In response to the result of issuing the power outage warning, the current operating frequency of the intelligent terminal is obtained, and the probability of power restoration within a preset time is calculated in combination with the voltage value of the transparent copy to determine the power restoration method, including:

[0015] Manual intervention to restore power, or automatic restoration of power;

[0016] Based on the power restoration result, a comparison between the storage voltage value and the reference voltage is determined to determine the power restoration status and whether to send a power restoration notification.

[0017] Further, the process of determining the power outage status analysis method includes,

[0018] If the power outage warning risk is high, determine the high warning risk location and read the voltage value;

[0019] If the power outage warning risk is a low warning risk, maintain continuous acquisition of high-frequency voltage data.

[0020] Furthermore, when the wiring mode is non-single-phase, the process of determining whether to issue a power outage message includes:

[0021] If the transparent reading fails or times out, it is determined that the voltage data cannot be read and a power outage message is issued;

[0022] If the three-phase voltage values ​​are all less than 0.6 times the reference voltage, it is determined that there is no power and a power outage message is issued;

[0023] If any phase voltage value is greater than or equal to 0.6 times the reference voltage, it is determined to be energized and no power outage information is issued.

[0024] Furthermore, when the wiring mode is single-phase, the process of determining whether to issue a power outage message includes:

[0025] If the voltage reading data of the electric energy meter cannot be obtained, it is determined that the voltage data cannot be read and a power outage warning is issued;

[0026] If the voltage value of the electric energy meter can be obtained and the voltage value is less than 0.6 times the reference voltage, it is determined to be a power-off state and a power outage message is issued;

[0027] If the transparent reading data of the voltage value of the electric energy meter can be obtained and the voltage value is greater than or equal to 0.6 times the reference voltage, it is determined that the power is on and no power outage information is issued.

[0028] Furthermore, in the process of determining the power outage warning state, the current data at the time of voltage failure are compared for the meters in the unavailable state and the non-powered state. If there is no current value or it is 0, it is determined that there is a power outage on site.

[0029] Furthermore, the preset time is six minutes.

[0030] Furthermore, the process of calculating the probability of power restoration within a preset time includes:

[0031] Determine the ratio of the voltage value of the through-reading to the voltage value of the normal operation as the first power restoration influencing factor;

[0032] Determine the ratio of the current operating frequency to the normal operating frequency as the second power restoration influencing factor;

[0033] A weighted sum of the first power restoration influencing factor and the second power restoration influencing factor is determined as the power restoration probability.

[0034] Furthermore, the power restoration method includes:

[0035] If the power restoration probability is less than or equal to the reference power restoration probability, determining that the power restoration method is manual intervention power restoration;

[0036] If the power restoration probability is greater than the reference power restoration probability, the power restoration mode is determined to be automatic power restoration.

[0037] Further, the process of determining the power-on status and determining whether to send a power-on notification includes:

[0038] If there are two consecutive points and / or two minutes of voltage curve data stored in the database, and the stored voltage value is greater than or equal to 0.6 times the reference voltage, it is determined to be powered on and a power-on notification is sent;

[0039] If the storage voltage value is less than 0.6 times the reference voltage, it is judged as a power-off state and no power-on notification is sent.

[0040] Furthermore, the reason for the power outage and the progress of power restoration are sent to customers simultaneously.

[0041] Compared with the prior art, the present invention obtains minute-level high-frequency voltage acquisition data and determines the power outage warning risk based on the acquisition data, determines the power outage status analysis method, including high warning risk and low warning risk, and in response to the high warning risk state, obtains the connection method between the electric energy meter and the smart terminal, determines the transparent reading method of the electric energy meter voltage value based on the connection method to determine whether to issue a power outage warning, and in response to the result of issuing the power outage warning, obtains the current operating frequency of the smart terminal, and calculates the power restoration probability within a preset time in combination with the transparent reading voltage value to determine the power restoration method, wherein the power restoration method is determined to be manual intervention or automatic power restoration, and the comparison between the storage voltage value and the reference voltage is determined to determine the power restoration state and determine whether to send a power restoration notification, thereby improving the power restoration efficiency.

[0042] In particular, the present invention determines the power outage warning risk based on minute-level high-frequency voltage collection data, determines the analysis method for the power outage status, and thereby determines the high warning risk position. In actual situations, for sudden power outages, determining the accident location and the cause of the power outage within a limited time is a key step in restoring power and responding to customer inquiries. Based on this, the present invention monitors the high-frequency voltage in real time. Once a voltage curve breakpoint appears at two consecutive points and / or two minutes, the high warning risk position is immediately determined, the voltage value is transparently copied, and a notification of the impending power outage is simultaneously sent at the location, so that timely preparations for the power outage and power outage status analysis can be made.

[0043] In particular, the present invention adopts different through-reading methods for different wiring modes to determine whether to issue a power outage message. In actual situations, the voltage value is mostly obtained through a digital multimeter, which directly obtains the voltage value of the digital multimeter without distinguishing between single-phase and non-single-phase. Based on this, the present invention considers a method for determining the through-reading voltage value of the electric energy meter according to the wiring mode, and determines the situation of issuing the power outage message according to whether the voltage value can be obtained and the ratio of the voltage value to the reference voltage, and simultaneously issues a power outage notification. Preferably, if the power outage notification is not issued, a notification of canceling the upcoming power outage needs to be sent, thereby improving the accuracy of the power outage analysis and the efficiency of the power outage analysis.

[0044] In particular, the present invention calculates the probability of power restoration within a preset time to determine the power restoration method. In actual situations, the cause of the power outage is uncertain, which affects the power restoration method. For example, if an instantaneous accident occurs in the power system, the power can be restored automatically by the automatic reclosing device of the power system. However, if it is a non-instantaneous accident, the power system cannot restore power by itself. At this time, it is impossible to accurately judge whether it can restore power by itself, resulting in a slow power restoration speed and reduced power restoration efficiency. Based on this, the present invention considers calculating the power restoration probability. Once the power restoration probability is lower than the benchmark power restoration probability, manual intervention is immediately performed and synchronous notification is made, which shortens the power outage time, speeds up the power restoration speed, and improves the power restoration probability. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] Figure 1 A schematic diagram of the method steps of a data security transmission method for an industrial data intelligent terminal according to an embodiment of the invention;

[0046] Figure 2 A logic block diagram of determining a power outage warning risk and determining a power outage status analysis method according to an embodiment of the invention;

[0047] Figure 3 A logic block diagram of a method for determining a voltage value of an electric energy meter according to an embodiment of the invention;

[0048] Figure 4 A logic block diagram for determining the power-on status and whether to send a power-on notification according to an embodiment of the present invention. DETAILED DESCRIPTION

[0049] In order to make the objects and advantages of the present invention more clearly understood, the present invention is further described below in conjunction with embodiments; it should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0050] The preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only used to explain the technical principles of the present invention and are not intended to limit the protection scope of the present invention.

[0051] It should be noted that in the description of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0052] See also Figures 1 to 4 As shown, Figure 1 This is a schematic diagram of the method steps of a data security transmission method for an industrial data intelligent terminal according to an embodiment of the invention. Figure 2 This is a logic block diagram of determining the power outage warning risk and determining the power outage status analysis method in an embodiment of the invention. Figure 3 The following is a logic block diagram of a method for determining the voltage value of an electric energy meter according to an embodiment of the invention. Figure 4 The data security transmission method for industrial data intelligent terminal of the present invention comprises:

[0053] Obtain minute-level high-frequency voltage data collected by the intelligent terminal and determine the power outage warning risk based on the collected data, and determine the power outage status analysis method, wherein:

[0054] If the voltage curve breaks at two consecutive points and / or within two minutes, the power outage warning risk is determined to be a high warning risk;

[0055] Or, the power outage warning risk is determined to be a low warning risk;

[0056] In response to the high warning risk state, a connection mode between the electric energy meter and the smart terminal is obtained, and a transparent reading method of the voltage value of the electric energy meter is determined based on the connection mode to determine whether to issue a power outage information, wherein:

[0057] If the wiring mode is not single-phase, the voltage value of the ABC three-phase voltage is copied and the timeout is set to 60 seconds;

[0058] If the wiring mode is single-phase, read the voltage value of the electric energy meter and set the timeout to 60 seconds;

[0059] In response to the result of issuing the power outage warning, the current operating frequency of the intelligent terminal is obtained, and the probability of power restoration within a preset time is calculated in combination with the voltage value of the transparent copy to determine the power restoration method, including:

[0060] Manual intervention to restore power, or automatic restoration of power;

[0061] Based on the power restoration result, a comparison between the storage voltage value and the reference voltage is determined to determine the power restoration status and whether to send a power restoration notification.

[0062] Specifically, in this embodiment, the frequency of collecting high-frequency voltage is at the minute level. In real life, technical personnel in this field can adjust the collection frequency according to actual conditions to make the prediction of power outage warning risk more accurate. Preferably, the collection frequency can be determined according to the time period. For example, the collection frequency is increased during peak power consumption periods, and the original collection frequency is maintained during daily power consumption periods.

[0063] Specifically, a sudden voltage drop will trigger a breakpoint in the voltage curve, causing the power system to be unable to maintain normal operation. Once a breakpoint in the voltage curve occurs in the power system, the probability of a power outage will increase, which will not be elaborated here.

[0064] Specifically, a timeout needs to be set for reading the voltage value of the electric energy meter, and the specific value of the timeout is related to the collection frequency.

[0065] Specifically, the process of determining the power outage status analysis method includes:

[0066] If the power outage warning risk is high, determine the high warning risk location and read the voltage value;

[0067] If the power outage warning risk is a low warning risk, maintain continuous acquisition of high-frequency voltage data.

[0068] It is understandable that the location of data changes can be determined during data collection and identified as a high warning risk location so that the maintenance location can be quickly determined during manual intervention and the power restoration efficiency can be improved.

[0069] Specifically, the present invention determines the power outage warning risk based on minute-level high-frequency voltage collection data, determines the analysis method for the power outage status, and thereby determines the high warning risk position. In actual situations, for sudden power outages, determining the accident location and the cause of the power outage within a limited time is a key step in restoring power and responding to customer inquiries. Based on this, the present invention monitors the high-frequency voltage in real time. Once a voltage curve breakpoint appears at two consecutive points and / or two minutes, the high warning risk position is immediately determined, the voltage value is transparently copied, and a notification of the impending power outage is simultaneously sent at the location, so that timely preparations for the power outage and power outage status analysis can be made.

[0070] Specifically, when the wiring mode is not single-phase, the process of determining whether to issue a power outage message includes:

[0071] If the transparent reading fails or times out, it is determined that the voltage data cannot be read and a power outage message is issued;

[0072] If the three-phase voltage values ​​are all less than 0.6 times, it is determined that there is no power and a power outage message is issued;

[0073] If any phase voltage value is greater than or equal to 0.6 times the reference voltage, it is determined to be energized and no power outage information is issued.

[0074] Specifically, the reference voltage is pre-calculated, and a plurality of voltage data are obtained to calculate the average voltage value, and the reference voltage is determined within a range of 0.95 times to 1.22 times the average voltage value.

[0075] Specifically, when the wiring mode is single-phase, the process of determining whether to issue a power outage message includes:

[0076] If it is greater than or equal to 0.6 times the reference voltage, it is judged to be energized.

[0077] If the voltage reading data of the electric energy meter cannot be obtained, it is determined that the voltage data cannot be read and a power outage warning is issued;

[0078] If the voltage value of the electric energy meter can be obtained and the voltage value is less than 0.6 times the reference voltage, it is determined to be a power-off state and a power outage message is issued;

[0079] If the transparent reading data of the voltage value of the electric energy meter can be obtained and the voltage value is greater than or equal to 0.6 times the reference voltage, it is determined that the power is on and no power outage information is issued.

[0080] Specifically,

[0081] Specifically, the power outage information is synchronized to the power supply bureau and customers at the same time, so that both parties can know the power outage status in time and enable the power supply bureau to carry out timely maintenance and power restoration operations.

[0082] Specifically, the present invention adopts different through-reading methods for different wiring modes to determine whether to issue power outage information. In actual situations, the voltage value is mostly obtained through a digital multimeter, which directly obtains the voltage value of the digital multimeter without distinguishing between single-phase and non-single-phase. Based on this, the present invention considers a method for determining the through-reading voltage value of the electric energy meter according to the wiring mode, and determines the situation of issuing power outage information according to whether the voltage value can be obtained and the ratio of the voltage value to the reference voltage, and simultaneously issues a power outage notification. Preferably, if the power outage notification is not issued, a notification of canceling the upcoming power outage needs to be sent, thereby improving the accuracy of power outage analysis and the efficiency of power outage analysis.

[0083] Specifically, in the process of determining the power outage warning status, the current data at the time of voltage and power outage are compared for the meters in the unavailable state and the unpowered state. If there is no current value or it is 0, it is determined that there is a power outage on site.

[0084] Specifically, a secondary verification is performed on the power-off state to determine the accuracy of the issued power outage information.

[0085] Specifically, the preset time is six minutes.

[0086] It is understandable that in this embodiment, the preset time is six minutes. Those skilled in the art can determine the preset time according to actual conditions, which will not be described in detail.

[0087] Specifically, the process of calculating the probability of power restoration within a preset time includes:

[0088] Determine the ratio of the voltage value of the through-reading to the voltage value of the normal operation as the first power restoration influencing factor;

[0089] Determine the ratio of the current operating frequency to the normal operating frequency as the second power restoration influencing factor;

[0090] A weighted sum of the first power restoration influencing factor and the second power restoration influencing factor is determined as the power restoration probability.

[0091] Specifically, the normal operating voltage value is obtained in advance, a number of voltage values ​​under normal operating conditions are obtained, and an average value of the voltage values ​​is determined as the normal operating voltage value.

[0092] Specifically, the normal operating frequency is obtained in advance, and a number of operating frequency values ​​under normal operation are obtained, and an average value of the operating frequency values ​​is determined as the normal operating voltage value.

[0093] Specifically, the weight coefficient of the first power restoration influencing factor is 0.62, and the weight coefficient of the second power restoration influencing factor is 0.38.

[0094] Specifically, the power recovery methods include:

[0095] If the power restoration probability is less than or equal to the reference power restoration probability, determining that the power restoration method is manual intervention power restoration;

[0096] If the power restoration probability is greater than the reference power restoration probability, the power restoration mode is determined to be automatic power restoration.

[0097] Specifically, the benchmark power restoration probability is calculated in advance, and several power restoration probabilities are obtained and the average power restoration probability is calculated, and the benchmark power restoration probability is determined to be between 0.98 times the average power restoration probability and 1.05 times the average power restoration probability.

[0098] Specifically, there is no limitation on the specific method of manual intervention for power restoration, as long as it can be performed, and technicians in this field can select it according to actual conditions, which will not be elaborated here.

[0099] Specifically, the normal operating voltage value is obtained in advance, a number of voltage values ​​under normal operating conditions are obtained, and an average value of the voltage values ​​is determined as the normal operating voltage value.

[0100] Specifically, the present invention calculates the probability of power restoration within a preset time to determine the power restoration method. In actual situations, the cause of the power outage is uncertain, which affects the power restoration method. For example, if an instantaneous accident occurs in the power system, the power can be restored by the automatic reclosing device of the power system. However, if it is a non-instantaneous accident, the power system cannot restore power by itself. At this time, it is impossible to accurately judge whether it can be restored by itself, resulting in a long power restoration time and reduced power restoration efficiency. Based on this, the present invention considers calculating the power restoration probability. Once the power restoration probability is lower than the benchmark power restoration probability, manual intervention is immediately performed and synchronous notification is made, which shortens the power outage duration and increases the power restoration probability.

[0101] Specifically, the process of determining the power-on status and determining whether to send a power-on notification includes:

[0102] If there are two consecutive points and / or two minutes of voltage curve data stored in the database, and the stored voltage value is greater than or equal to 0.6 times the reference voltage, it is determined to be powered on and a power-on notification is sent;

[0103] If the storage voltage value is less than 0.6 times the reference voltage, it is judged as a power-off state and no power-on notification is sent.

[0104] Specifically, the cause of the power outage and the progress of power restoration are sent to customers simultaneously.

[0105] It is understandable that real-time notification of power outage, power restoration and power restoration progress has greatly alleviated users' anxiety, improved the accuracy of power outage determination, and improved power restoration efficiency.

[0106] So far, the technical solutions of the present invention have been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it is easy for those skilled in the art to understand that the protection scope of the present invention is obviously not limited to these specific embodiments. Without departing from the principle of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will fall within the protection scope of the present invention.

Claims

1. A data security transmission method for an industrial data intelligent terminal, characterized in that: include: Obtain minute-level high-frequency voltage data collected by the intelligent terminal and determine the power outage warning risk based on the collected data, and determine the power outage status analysis method, wherein: If the voltage curve breaks at two consecutive points and / or within two minutes, the power outage warning risk is determined to be a high warning risk; Or, the power outage warning risk is determined to be a low warning risk; In response to the high warning risk state, a connection mode between the electric energy meter and the smart terminal is obtained, and a transparent reading method of the voltage value of the electric energy meter is determined based on the connection mode to determine whether to issue a power outage information, wherein: If the wiring mode is not single-phase, the voltage value of the ABC three-phase voltage is copied and the timeout is set to 60 seconds; If the wiring mode is single-phase, read the voltage value of the electric energy meter and set the timeout to 60 seconds; In response to the result of issuing the power outage warning, the current operating frequency of the intelligent terminal is obtained, and the probability of power restoration within a preset time is calculated in combination with the voltage value of the transparent copy to determine the power restoration method, including: Manual intervention to restore power, or automatic restoration of power; Based on the power restoration result, a comparison between the storage voltage value and the reference voltage is determined to determine the power restoration status and whether to send a power restoration notification.

2. The data security transmission method for industrial data intelligent terminal according to claim 1 is characterized in that: The process of determining the outage status analysis method includes, If the power outage warning risk is high, determine the high warning risk location and read the voltage value; If the power outage warning risk is a low warning risk, maintain continuous acquisition of high-frequency voltage data.

3. The data security transmission method for industrial data intelligent terminal according to claim 1 is characterized in that: When the wiring mode is non-single-phase, the process of determining whether to issue a power outage message includes: If the transparent reading fails or times out, it is determined that the voltage data cannot be read and a power outage message is issued; If the three-phase voltage values ​​are all less than 0.6 times the reference voltage, it is determined that there is no power and a power outage message is issued; If any phase voltage value is greater than or equal to 0.6 times the reference voltage, it is determined to be energized and no power outage information is issued.

4. The data security transmission method for industrial data intelligent terminal according to claim 1 is characterized in that: When the wiring mode is single-phase, the process of determining whether to issue a power outage message includes: If the voltage reading data of the electric energy meter cannot be obtained, it is determined that the voltage data cannot be read and a power outage warning is issued; If the voltage value of the electric energy meter can be obtained and the voltage value is less than 0.6 times the reference voltage, it is determined to be a power-off state and a power outage message is issued; If the transparent reading data of the voltage value of the electric energy meter can be obtained and the voltage value is greater than or equal to 0.6 times the reference voltage, it is determined that the power is on and no power outage information is issued.

5. The data security transmission method for industrial data intelligent terminal according to claim 4 is characterized in that: In the process of determining the power outage warning state, the current data at the time of voltage failure are compared for the meters in the unavailable state and the unpowered state. If there is no current value or it is 0, it is determined that there is a power outage on the meter site.

6. The data security transmission method for industrial data intelligent terminal according to claim 1 is characterized in that: The preset time is six minutes.

7. The data security transmission method for industrial data intelligent terminal according to claim 1 is characterized in that: The process of calculating the probability of power restoration within a preset time includes: Determine the ratio of the voltage value of the through-reading to the voltage value of the normal operation as the first power restoration influencing factor; Determine the ratio of the current operating frequency to the normal operating frequency as the second power restoration influencing factor; A weighted sum of the first power restoration influencing factor and the second power restoration influencing factor is determined as the power restoration probability.

8. The data security transmission method for industrial data intelligent terminal according to claim 1 is characterized in that: The power recovery method includes If the power restoration probability is less than or equal to the reference power restoration probability, determining that the power restoration method is manual intervention power restoration; If the power restoration probability is greater than the reference power restoration probability, the power restoration mode is determined to be automatic power restoration.

9. The data security transmission method for industrial data intelligent terminal according to claim 1 is characterized in that: The process of determining the power-on status and whether to send a power-on notification includes: If there are two consecutive points and / or two minutes of voltage curve data stored in the database, and the stored voltage value is greater than or equal to 0.6 times the reference voltage, it is determined to be powered on and a power-on notification is sent; If the storage voltage value is less than 0.6 times the reference voltage, it is judged as a power-off state and no power-on notification is sent.

10. The data security transmission method for industrial data intelligent terminal according to claim 1 is characterized in that: The reason for power outage and power restoration progress are sent to customers simultaneously.

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