Remote monitoring data transmission system based on third-generation Beidou

Abstract

The invention discloses a remote monitoring data transmission system based on Beidou third generation, and relates to the technical field of remote monitoring data transmission, and the system comprises a collection unit which is used for obtaining monitoring data which is data collected by all sensors; according to the Beidou 4G dual-mode telemetering terminal, the integrated design of the structure and hardware can be achieved, and compared with a Beidou 4G dual-mode telemetering terminal, the Beidou 4G dual-mode telemetering terminal is highly integrated, compatible with 5G, capable of supporting multiple communication modes, capable of achieving self-power supply, high in storage capacity and capable of being used for a long time without changing electricity; meanwhile, the transmitted data can be encrypted randomly, so that the possibility of leakage is low, and the data is not easy to crack; the method is simple, effective, easy and practical.

Description

Technical Field

[0001] The present invention belongs to the technical field of remote monitoring data transmission, and in particular to a remote monitoring data transmission system based on Beidou III. Background Art

[0002] With the rapid construction and development of the Beidou system and its widespread application, especially the country's active promotion of the comprehensive monitoring and early warning application of the Beidou system in the water conservancy industry, many domestic RTU manufacturers are developing Beidou telemetry terminal products.

[0003] Current issues:

[0004] At present, the company's existing products use outsourced terminal equipment based on BeiDou-2 short message communication. The regional communication capability of BeiDou-2 can only transmit a maximum of 120 Chinese characters at a time;

[0005] RTU product application scenarios are mostly suitable for on-site applications in water conservancy and hydrology automatic monitoring application projects such as reservoir rainfall conditions, mountain torrent disaster warnings, rural grassroots warnings, groundwater monitoring, and small and medium-sized river hydrological monitoring. The environment is particularly harsh in remote areas with no public network signals, severe weather conditions, and weak signals in special disaster environments;

[0006] Ordinary equipment consumes a lot of electricity, runs continuously, needs to be replaced frequently, and is not suitable for long-term use.

[0007] In response to the above problems, this application proposes a Beidou III integrated terminal to solve the above problems, which is mainly reflected in the following aspects:

[0008] The regional communication capacity of Beidou-3 reaches 1,000 Chinese characters at a time, which can transmit not only text, but also voice and pictures. Starting from the access to Beidou short message communication module and integrated design, the "4G+Beidou 3 short message" integrated telemetry terminal is developed, which can cope with the dynamic perception of all elements of rainfall conditions in areas where wireless networks are difficult to cover or have high requirements for data transmission reliability. The product has solar panels covering three sides of the lower half of the shell, and self-charging power supply is achieved through the charge and discharge management unit and the built-in battery. Summary of the invention

[0009] The present invention aims to solve at least one of the technical problems existing in the prior art; to this end, the present invention proposes a remote monitoring data transmission system based on Beidou III, comprising:

[0010] The acquisition unit is used to obtain monitoring data, which is the data collected by all sensors;

[0011] The communication unit is used to encrypt the monitoring data to obtain the sending information and transmit the sending information. The specific method of encrypting the sending information is as follows:

[0012] Step 1: Obtain all monitoring data and the encryption scheme group, which contains several encryption schemes. The encryption schemes here are pre-stored by the administrator;

[0013] Step 2: After that, the key data of the monitoring data is obtained, which is the file size value of the monitoring data, and it is marked as a pending value. The pending value is divided into individual numbers, and the largest one is selected from the numbers and marked as the selected number;

[0014] Step 3: Select an encryption scheme from the encryption scheme group according to the selected number for encryption. The specific method is as follows:

[0015] The encryption schemes are sorted and will not be changed after sorting. Then, the encryption schemes are counted starting from the first encryption scheme according to the selected number, and the selected scheme is traversed to the selected scheme, and then the encryption scheme is marked as the selected encryption scheme.

[0016] Step 4: Encrypt the monitoring data using the selected encryption scheme. The encrypted monitoring data is re-marked as the sent data. The size of the sent data is obtained, and the size of the unencrypted monitoring data is subtracted from it to obtain a value marked as the original difference;

[0017] The transmission data and the original difference are integrated to form the transmission information and sent.

[0018] Further, it also includes a core unit;

[0019] The core unit includes an MCU, and a memory and a clock circuit connected to the MCU.

[0020] Furthermore, it also includes a power supply unit, the collection unit includes a charge and discharge management unit and a battery and a solar cell panel controlled by the charge and discharge management unit, and the main power supply is used to supply power to different circuits through step-down conversion.

[0021] Furthermore, the acquisition unit is electrically connected to the MCU, specifically including a pulse quantity interface, an RS485 interface circuit, and a switch quantity interface, which can be connected to various water level gauges and tipping bucket rain gauges with RS485 interfaces, and one RS232 interface is used for debugging and maintenance.

[0022] Furthermore, it includes a 4G / 5G remote communication module, a Beidou-3 short message and positioning module, a Lora communication module and a low-power Bluetooth module.

[0023] Furthermore, the Lora communication module and the low-power Bluetooth module can be used as device debugging interfaces to communicate with the dedicated Bluetooth APP software of the Android mobile client;

[0024] The 4G / 5G remote communication module, Beidou-3 short message and positioning module are used as the communication transmission interface for monitoring data.

[0025] Furthermore, the specific method of sorting the encryption schemes is:

[0026] Randomize the encryption schemes.

[0027] Furthermore, the specific method of sorting the encryption schemes is:

[0028] Obtain all encryption schemes, let them encrypt any sample data, obtain the time required for all encryption schemes to encrypt the sample scheme, and mark the time as the required time;

[0029] There is also a specific value of the increase in the size of the encrypted file compared to the size before encryption, which is marked as an increase value;

[0030] The ranking value is calculated by removing the dimension of the demand time and the incremental value. The specific formula is:

[0031] Sorting value = 0.46*demand time + 0.54*increment value;

[0032] Sort the encryption schemes in ascending order of sorting value.

[0033] Compared with the prior art, the present invention has the following beneficial effects:

[0034] This application realizes the integrated design of structure and hardware through the Beidou third-generation integrated terminal. Compared with a Beidou 4G dual-mode telemetry terminal, it is highly integrated, compatible with 5G, supports multiple communication methods, realizes self-power supply, has strong storage capacity, and can be used for a long time without changing the battery; at the same time, the transmitted data can be randomly encrypted, the possibility of leakage is low, and it is not easy to be cracked; the present invention is simple, effective, and easy to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 is a system block diagram of the present invention;

[0036] Figure 2 This is a schematic diagram of the signal connection principle between the main control unit and each module of the present invention;

[0037] Figure 3 This is the embedded software flow chart of the present invention. DETAILED DESCRIPTION

[0038] The technical solution of the present invention will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0039] See also Figure 1 , this application provides a remote monitoring data transmission system based on Beidou III, including:

[0040] Core unit, power supply unit, acquisition unit, communication unit and memory;

[0041] Among them: the power supply unit includes a built-in battery, a solar panel and a charge and discharge management unit. At the same time, an external battery and a solar panel can be selected. The main power supply is converted to power different circuits through step-down conversion;

[0042] Core unit, including MCU, memory and clock circuit;

[0043] The acquisition unit is used to obtain monitoring data, which is the data collected by various sensors. The acquisition unit here specifically includes a pulse quantity interface, an RS485 interface circuit, a switch quantity interface, etc. It can be connected to various RS485 interface water level gauges, tipping bucket rain gauges and other intelligent sensors. One RS232 interface is used for debugging and maintenance;

[0044] The communication unit includes 4G / 5G remote communication module, Beidou III short message and positioning module, Lora communication module and low-power Bluetooth module;

[0045] The 4G / 5G remote communication module, Beidou III short message and positioning module are used as the communication transmission interface for monitoring data. The monitoring data is encrypted with the help of the communication transmission interface to obtain the sending information, and the sending information is transmitted. The specific method of encrypting the sending information is as follows:

[0046] Step 1: Obtain all monitoring data and the encryption scheme group, which contains several encryption schemes. The encryption schemes here are pre-stored by the administrator;

[0047] Of course, as a technical solution in this field, it specifically includes symmetric encryption algorithms such as DES, 3DES, AES, etc., and can also be asymmetric encryption algorithms such as RSA, ELGama l, etc., which are not exhaustively listed here;

[0048] Step 2: After that, the key data of the monitoring data is obtained, which is the file size value of the monitoring data, and it is marked as a pending value. The pending value is divided into individual numbers, and the largest one is selected from the numbers and marked as the selected number;

[0049] Step 3: Select an encryption scheme from the encryption scheme group according to the selected number for encryption. The specific method is as follows:

[0050] Randomly sort the encryption schemes, and do not re-sort them after sorting. Then, count from the first encryption scheme according to the selected number, traverse to the selected number of schemes, and then mark the encryption scheme as the selected encryption scheme;

[0051] Step 4: Encrypt the monitoring data using the selected encryption scheme. The encrypted monitoring data is re-marked as the sending data. The size of the sending data is obtained, and the size of the unencrypted monitoring data is subtracted from it to obtain a numerical value marked as the original difference. The original difference is used for the access user to decrypt the data when it is received. First, the size of the unencrypted data is obtained by adding the original difference to the size of the sending data, and then the selected number is reversely determined according to the method provided in this application. The encryption scheme is found according to the selected number. The encryption schemes and their ordering methods in the encryption scheme group are kept consistent at the encryption end and the decryption end. After the decryption is completed, the decrypted data size and the size of the unencrypted data restored by the original difference can be compared to confirm whether the decryption is correct.

[0052] Integrate the transmission data and the original difference to form transmission information and send it;

[0053] The Lora communication module and low-power Bluetooth module serve as the device debugging interface and can communicate with the dedicated Bluetooth APP software of the Android mobile client;

[0054] Of course, as the second embodiment of the present application, the present application is implemented on the basis of the first embodiment, and the difference from the first embodiment is that the encryption schemes are sorted in the present embodiment as follows:

[0055] Obtain all encryption schemes, let them encrypt any sample data, obtain the time required for all encryption schemes to encrypt the sample scheme, and mark the time as the required time;

[0056] There is also a specific value of the increase in the size of the encrypted file compared to the size before encryption, which is marked as an increase value;

[0057] The ranking value is calculated by removing the dimension of the demand time and the incremental value. The specific formula is:

[0058] Sorting value = 0.46*demand time + 0.54*increment value;

[0059] Sort the encryption schemes in ascending order of sorting value.

[0060] like Figure 2As shown in the figure, it is a schematic diagram of the signal connection principle between the main control unit and each module. The Beidou integrated terminal mainboard is connected to the communication unit, sensor, memory and debugging serial port. The communication unit includes LORA module, Beidou third-generation short message, 4G / 5G remote communication module, positioning module and Bluetooth module, which can be connected to the data receiving platform. The sensor can select water volume or water level function. The debugging serial port is used for debugging and maintenance, and the memory is used to store data. Finally, the power supply module supplies power to all main controls and other modules.

[0061] like Figure 3 The figure shows the embedded software flow chart. According to the functional requirements and the overall hardware design principle, the embedded software functional modules mainly include data acquisition module, 4G communication module, Beidou 3 short message module, FTP remote firmware upgrade module, data statistics module, data processing module, data display module, task management module, log recording module, clock management module, positioning and timing module (optional), TCP / IP communication module, protocol transmission module, etc. The specific implementation of each functional module is in different tasks based on operating system management.

[0062] The above embodiments are only used to illustrate the technical method of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical method of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical method of the present invention.

Claims

1. The remote monitoring data transmission system based on Beidou III is characterized by: include: The acquisition unit is used to obtain monitoring data, which is the data collected by all sensors; The communication unit is used to encrypt the monitoring data to obtain the sending information and transmit the sending information. The specific method of encrypting the sending information is as follows: Step 1: Obtain all monitoring data and the encryption scheme group, which contains several encryption schemes. The encryption schemes here are pre-stored by the administrator; Step 2: After that, the key data of the monitoring data is obtained, which is the file size value of the monitoring data, and it is marked as a pending value. The pending value is divided into individual numbers, and the largest one is selected from the numbers and marked as the selected number; Step 3: Select an encryption scheme from the encryption scheme group according to the selected number for encryption. The specific method is as follows: The encryption schemes are sorted and will not be changed after sorting. Then, the encryption schemes are counted starting from the first encryption scheme according to the selected number, and the selected scheme is traversed to the selected scheme, and then the encryption scheme is marked as the selected encryption scheme. Step 4: Encrypt the monitoring data using the selected encryption scheme. The encrypted monitoring data is re-marked as the sent data. The size of the sent data is obtained, and the size of the unencrypted monitoring data is subtracted from it to obtain a value marked as the original difference; The transmission data and the original difference are integrated to form the transmission information and sent.

2. The remote monitoring data transmission system based on BeiDou III according to claim 1 is characterized in that: It also includes core units; The core unit includes an MCU, and a memory and a clock circuit connected to the MCU.

3. The remote monitoring data transmission system based on BeiDou III according to claim 2 is characterized in that: It also includes a power supply unit, and the collection unit includes a charge and discharge management unit and a battery and a solar cell panel controlled by the charge and discharge management unit, and the main power supply is used to supply power to different circuits through step-down conversion.

4. The remote monitoring data transmission system based on BeiDou III according to claim 1 is characterized in that: The acquisition unit is electrically connected to the MCU, including a pulse quantity interface, an RS485 interface circuit, and a switch quantity interface. It can be connected to various water level gauges and tipping bucket rain gauges with RS485 interfaces. One RS232 interface is used for debugging and maintenance.

5. The remote monitoring data transmission system based on BeiDou III according to claim 1 is characterized in that: Including 4G / 5G remote communication module, Beidou-3 short message and positioning module, Lora communication module and low-power Bluetooth module.

6. The remote monitoring data transmission system based on BeiDou III according to claim 1 is characterized in that: The Lora communication module and low-power Bluetooth module serve as the device debugging interface and can communicate with the dedicated Bluetooth APP software of the Android mobile client; The 4G / 5G remote communication module, Beidou-3 short message and positioning module are used as the communication transmission interface for monitoring data.

7. The remote monitoring data transmission system based on BeiDou III according to claim 1 is characterized in that: The specific way to sort the encryption schemes is: Randomize the encryption schemes.

8. The remote monitoring data transmission system based on BeiDou III according to claim 1 is characterized in that: The specific way to sort the encryption schemes is: Obtain all encryption schemes, let them encrypt any sample data, obtain the time required for all encryption schemes to encrypt the sample scheme, and mark the time as the required time; There is also a specific value of the increase in the size of the encrypted file compared to the size before encryption, which is marked as an increase value; The ranking value is calculated by removing the dimension of the demand time and the incremental value. The specific formula is: Sorting value = 0.46*demand time + 0.54*increment value; Sort the encryption schemes in ascending order of sorting value.

Images