CN117528472A - Emergent wireless broadband communication equipment of electric power - Google Patents
Emergent wireless broadband communication equipment of electric power Download PDFInfo
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- CN117528472A CN117528472A CN202311420034.1A CN202311420034A CN117528472A CN 117528472 A CN117528472 A CN 117528472A CN 202311420034 A CN202311420034 A CN 202311420034A CN 117528472 A CN117528472 A CN 117528472A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/90—Services for handling of emergency or hazardous situations, e.g. earthquake and tsunami warning systems [ETWS]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/14—Relay systems
- H04B7/15—Active relay systems
- H04B7/185—Space-based or airborne stations; Stations for satellite systems
- H04B7/1851—Systems using a satellite or space-based relay
- H04B7/18513—Transmission in a satellite or space-based system
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L63/00—Network architectures or network communication protocols for network security
- H04L63/04—Network architectures or network communication protocols for network security for providing a confidential data exchange among entities communicating through data packet networks
- H04L63/0428—Network architectures or network communication protocols for network security for providing a confidential data exchange among entities communicating through data packet networks wherein the data content is protected, e.g. by encrypting or encapsulating the payload
- H04L63/045—Network architectures or network communication protocols for network security for providing a confidential data exchange among entities communicating through data packet networks wherein the data content is protected, e.g. by encrypting or encapsulating the payload wherein the sending and receiving network entities apply hybrid encryption, i.e. combination of symmetric and asymmetric encryption
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W12/00—Security arrangements; Authentication; Protecting privacy or anonymity
- H04W12/03—Protecting confidentiality, e.g. by encryption
- H04W12/033—Protecting confidentiality, e.g. by encryption of the user plane, e.g. user's traffic
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Abstract
The invention relates to the technical field of emergency communication, and provides electric power emergency wireless broadband communication equipment, which comprises: the system comprises a communication module, an information sub-packaging module, an information encryption module and an operation module, wherein the communication module is used for receiving and sending information, the information sub-packaging module is used for splitting information in the power equipment so that each part of information occupies only a small part of memory, and the information encryption module is used for independently encrypting the information split by the information sub-packaging module, wherein an encryption password is divided into a primary password and a secondary password; through data type classification, the data is packetized by a data packetizing module through character string segmentation, data packet segmentation, frame segmentation, data structure disassembly and data stream segmentation, so that each type of data forms independent small data packets, the data is divided into a plurality of small data packets, the bandwidth requirement on broadband is reduced in the transmission process, and quick emergency transmission of the data is realized.
Description
Technical Field
The invention relates to the technical field of emergency communication, in particular to electric power emergency wireless broadband communication equipment.
Background
In the power industry, the development and application of emergency wireless broadband communication equipment are increasingly important. With the increasing complexity of power systems and the demand for instant messaging, power emergency wireless broadband communication devices play a vital role in impeding power supply stability, coping with disasters and emergencies.
The emergency wireless broadband communication of the electric power mainly has the following problems:
1. signal coverage is limited: due to the limitations of the transmission power and antenna of the device, the signal coverage of the power emergency wireless broadband communication device is generally small, and cannot cover a large area.
2. Poor anti-interference performance: because power emergency wireless broadband communication devices typically operate in a frequency crowded environment, they are susceptible to interference from other wireless devices, resulting in reduced communication quality.
3. Bandwidth limited: because of the limited spectrum resources of the power emergency wireless broadband communication device, the bandwidth is limited, and high-speed data transmission service cannot be provided.
4. The system complexity is high: the power emergency wireless broadband communication equipment needs to be integrated with a power system, various communication protocols and network topology junctions need to be considered, and the complexity and maintenance cost of the system are increased.
5. The safety is difficult to ensure: when the power emergency wireless broadband communication equipment transmits sensitive data, the risks of data leakage and network attack exist, and the safety is difficult to guarantee.
The invention aims to develop electric power emergency wireless broadband communication equipment based on a multidimensional communication technology and combining a data distribution technology, so that signal stability and information transmission rate are improved.
Disclosure of Invention
The invention provides an electric power emergency wireless broadband communication device, which reduces the bandwidth required by single transmission by selecting a plurality of communication modes and splitting data, thereby solving the problems in the background art.
The specific technical scheme of the invention is as follows:
a power emergency wireless broadband communication device, comprising:
the communication module is used for receiving and sending information;
the information sub-packaging module is used for splitting information in the power equipment so that each piece of information occupies only a small part of memory;
the information encryption module is used for independently encrypting the information split by the information subpackaging module, wherein the encryption password is divided into a primary password and a secondary password;
the operation module is composed of a display screen and operation keys, and a worker can control the operation of other modules through the operation module.
As a technical scheme of the invention, the communication module comprises a multidimensional communication unit, an anti-interference unit and an expansion unit;
the multidimensional communication unit is used for integrating network, telephone and satellite signals, and can flexibly adjust different communication strategies when sending the information split by the information sub-packaging module;
the anti-interference unit comprises modulation and demodulation, frequency hopping and a filter, wherein the modulation and demodulation is used for converting the information split by the information subpackaging module into a signal with specific frequency, then the communication module is used for information transmission, the frequency hopping can correct the frequency of information transmission in the transmission process, and meanwhile, the filter is used for removing unnecessary frequencies.
Wherein the multidimensional communication cell construction comprises:
(1) Construction of a satellite communication gateway:
deploying a satellite modem: the satellite modem converts the digital signal into an analog signal that can be transmitted by the satellite, and converts the received satellite signal into a digital signal.
Router and switch configuration: the router and the switch are configured to connect the satellite modem with the Internet network and realize the routing and switching of the data packets.
Configuration of firewall and security policies: and a firewall and a security policy are configured for the satellite communication gateway, so that the security and protection of the network are ensured.
(2) Use of satellite telephone terminal equipment:
installing satellite telephone terminal equipment: a satellite telephone terminal device is installed where communication is required, which device can be connected to a telephone exchange via a satellite link.
Configuring a telephone exchange: the satellite telephone terminal equipment is connected with the telephone exchange and is correspondingly configured to realize the transmission of telephone signals and the establishment of calls.
(3) Construction of a mobile communication base station:
deploying satellite base station equipment: satellite base station equipment is deployed in areas where coverage is required, and the equipment can be connected with a mobile communication network through a satellite link.
Configuring a base station device: the satellite base station equipment is connected with a core network of the mobile communication network and is correspondingly configured so as to realize the transmission and access of mobile communication signals.
(4) Configuration of routers and switches:
router configuration: and configuring a routing table of the router, taking the satellite link as a backup link, and setting a fault switching strategy to realize automatic switching to the satellite link when the main link fails.
And (3) switch configuration: and configuring ports and VLAN of the switch, and connecting the satellite link with other network equipment to realize data exchange and forwarding.
(5) Selection of a data transmission protocol:
TCP/IP protocol: data transmission is performed using the TCP/IP protocol, reliable data transmission is performed through the satellite link, and flow control, congestion control and error correction are performed.
VPN technology: and a secure tunnel is established through VPN (virtual private network) technology, data are encrypted and isolated, and the security and privacy of the data are ensured.
The satellite communication terminal is arranged in the operation module, and a plurality of devices are connected through Bluetooth and WiFi signals in a combined mode to perform short-distance data transmission.
As a technical scheme of the invention, the method for modulating and demodulating in the anti-interference unit comprises the following steps:
s1: determining an original signal, firstly determining the original signal to be transmitted or received in an anti-interference unit, and determining the original signal through the multi-dimensional communication unit;
s2: selecting a modulation or demodulation mode, and selecting any mode of amplitude modulation, frequency modulation and phase modulation according to the characteristics of signals and transmission requirements;
s3: determining modulation or demodulation parameters, determining parameters of modulation or demodulation, including carrier frequency, modulating or demodulating signals by using modulation or demodulation software, and generating specified signals;
s4: and signal processing, which is used for transmitting or analyzing and receiving the modulated or demodulated signal.
As a technical scheme of the invention, the information packetizing module is internally provided with a Python program, and the Python program comprises character string segmentation data, frame segmentation, data structure disassembly and data stream segmentation, wherein the character string segmentation data needs to be converted into character strings through the Python program, so that the information segmentation and transmission are convenient.
As a technical scheme of the present invention, the data structure disassembly is used for disassembling time domain waveform data, frequency domain data and phase data in the electric power data.
As a technical scheme of the invention, the information encryption module classifies the split information of the information packetizing module, encrypts the split data, and adopts two modes of symmetric encryption and asymmetric encryption.
As a technical scheme of the invention, the asymmetric encryption adopts a form of primary and secondary passwords for encryption, namely, the data under the same category comprises the primary passwords and the secondary passwords.
Compared with the prior art, the invention has the following beneficial effects:
1. according to the invention, through data type classification, the data is packetized by the data packetizing module through character string segmentation, data packet segmentation, frame segmentation, data structure disassembly and data stream segmentation, so that each type of data forms independent small data packets, and the data is divided into a plurality of small data packets, thereby reducing the bandwidth requirement on broadband in the transmission process and realizing rapid emergency transmission of the data.
2. The invention automatically detects the current network signal intensity through the communication module, then selects a proper path between the network and the satellite for transmission when no signal exists, and uses the modulator-demodulator for data conversion transmission, thereby effectively improving the reliability of emergency transmission.
3. The invention ensures the safety of the data transmission process through the primary and secondary passwords in the information encryption module, reduces the possibility of data loss and improves the data transmission efficiency and safety.
Drawings
Fig. 1 is a schematic diagram of the operation of the emergency broadband communication apparatus of the present invention.
Detailed Description
Embodiments of the present invention are described in further detail below with reference to the accompanying drawings and examples. The following examples are illustrative of the invention but are not intended to limit the scope of the invention.
As shown in fig. 1, the present invention provides a power emergency wireless broadband communication apparatus, comprising:
the communication module is used for receiving and sending information;
the information sub-packaging module is used for splitting information in the power equipment so that each piece of information occupies only a small part of memory;
the information encryption module is used for independently encrypting the information split by the information subpackaging module, wherein the encryption password is divided into a primary password and a secondary password;
the operation module is composed of a display screen and operation keys, and a worker can control the operation of other modules through the operation module.
As a technical scheme of the invention, the communication module comprises a multidimensional communication unit, an anti-interference unit and an expansion unit;
the multidimensional communication unit is used for integrating network, telephone and satellite signals, and can flexibly adjust different communication strategies when sending the information split by the information sub-packaging module;
the anti-interference unit comprises modulation and demodulation, frequency hopping and a filter, wherein the modulation and demodulation is used for converting the information split by the information subpackaging module into a signal with specific frequency, then the communication module is used for information transmission, the frequency hopping can correct the frequency of information transmission in the transmission process, and meanwhile, the filter is used for removing unnecessary frequencies.
As a technical scheme of the invention, the method for modulating and demodulating in the anti-interference unit comprises the following steps:
s1: determining an original signal, firstly determining the original signal to be transmitted or received in an anti-interference unit, and determining the original signal through the multi-dimensional communication unit;
s2: selecting a modulation or demodulation mode, and selecting any mode of amplitude modulation, frequency modulation and phase modulation according to the characteristics of signals and transmission requirements;
s3: determining modulation or demodulation parameters, determining parameters of modulation or demodulation, including carrier frequency, modulating or demodulating signals by using modulation or demodulation software, and generating specified signals;
s4: and signal processing, which is used for transmitting or analyzing and receiving the modulated or demodulated signal.
Wherein the modulation and demodulation range includes:
(1) Amplitude Modulation (AM): in amplitude modulation, the amplitude of the original signal is modulated onto the amplitude of the carrier signal. The amplitude variation of the modulation number represents the information of the original signal. Upon demodulation, the original signal can be restored by extracting the amplitude variation of the modulated signal.
(2) Frequency Modulation (FM): in frequency modulation, the frequency variation of the original signal is modulated onto the frequency of the carrier signal. The frequency variation of the modulated signal represents the information of the original signal. Upon demodulation, the original signal can be restored by extracting the frequency variation of the modulated signal.
(3) Phase Modulation (PM): in phase modulation, the phase change of the original signal is modulated onto the phase of the carrier signal. The phase change of the modulated signal represents the information of the original signal. At demodulation, the original signal can be restored by extracting the phase change of the modulated signal.
(4) Orthogonal Frequency Division Multiplexing (OFDM): OFDM technology divides a signal into a plurality of subcarriers, each of which has frequencies that are orthogonal to each other. At the transmitting end, the original signals are modulated onto different sub-carriers respectively through a modulation mode. At the receiving end, the original signal can be restored by demodulating and combining the signals of the respective subcarriers.
(5) Amplitude modulation frequency modulation (AM-FM): amplitude modulation is a modulation scheme that combines amplitude modulation with frequency modulation. At the transmitting end, the original signal acts on the carrier signal simultaneously by amplitude modulation and frequency modulation. At the receiving end, the original signal can be restored by demodulating and separating the amplitude and frequency variations.
As one implementation mode of the invention, the information packetizing module is internally provided with a Python program, and the information packetizing module comprises character string segmentation data, data packet segmentation, frame segmentation, data structure disassembly and data stream segmentation, wherein the character string segmentation data needs to be converted into character strings through the Python program, and is convenient for information segmentation and transmission.
As one embodiment of the present invention, the data structure disassembly is used for disassembling time domain waveform data, frequency domain data, and phase data in the power data.
As one implementation mode of the invention, the information encryption module classifies the split information of the information packetizing module, encrypts the split data and adopts two modes of symmetric encryption and asymmetric encryption.
As an embodiment of the present invention, the asymmetric encryption is performed in the form of a primary-secondary password, that is, data under the same category includes a primary password and a secondary password.
Example 1
As shown in fig. 1, first, the emergency wireless broadband communication device of the present invention may be carried by a data box, where the data box includes a power module, a data storage module, a navigation module, an emergency help module, and the like in addition to the above functional modules;
in the formal use process, firstly, staff counts the data of the areas such as a power station, a high-voltage tower and the like, then, the data is input into the equipment through a display screen and keys in an operation module, then, an information sub-packaging module classifies the data, and the electric power data comprises:
(1) Time domain waveform data: current and voltage waveforms in power systems are complex time domain signals. These waveform data typically contain periodic oscillations, transients, and harmonics.
(2) Frequency domain data: the current and voltage signals in the power system may be subjected to spectral analysis to obtain frequency domain data such as frequency, amplitude, phase, etc. The frequency domain data describes the distribution of different frequency components in the system.
(3) Phase data: phase information in a power system is complex data describing the phase difference, phase shift, etc., relationship between different power devices. Phase data plays an important role in the stability and operation control of the power system.
(4) Harmonic data: harmonics exist in the power system, which are periodic disturbances with frequencies that are integer multiples of the fundamental frequency. The harmonic data includes information such as frequency, amplitude, and phase of the harmonic.
(5) Fault data: fault data in the power system includes fault current, fault voltage, fault type, etc. information.
After the classification according to the type of the data is completed, the data packet dividing module divides the data into the data packets through character strings, data packet division, frame division, data structure disassembly and data stream division, so that each type of data forms an independent small data packet;
firstly, character string segmentation data is adopted, and the data is converted into a character string format based on str () function in a Python program, wherein the power data capable of being converted into the character string format comprises:
(1) Current value: current data in the power system may be converted into a string representation, for example: "10.5A";
(2) Voltage value: voltage data in a power system may be converted into a string representation, for example: "220V";
(3) Power value: power data in a power system may be converted into a string representation, for example: "1000W";
(4) Energy value: energy data in a power system may be converted into a string representation, for example: "500 kWh";
(5) Timestamp: the time information in the power data may be converted into a string representation, for example: "2023-01-01 12:00:00";
(6) Device status: the status information of the power device may be converted into a string representation, for example: "open", "closed", etc.;
(7) Error code: error code information in the power data may be converted into a string representation, for example: "E001", "E002", etc.;
(8) Description of the event: event description information in the power data may be converted into a string representation, for example: an "overcurrent protection trigger", "a" voltage abnormality ", etc.
The data is converted into the character strings, so that the data transmission is facilitated, meanwhile, the character strings occupy small memory space, the communication bandwidth is required to be small, the data transmission efficiency is greatly improved, and the data transmission delay is avoided.
When the power data is required to be transmitted through the network, the data is divided into a plurality of data packets for transmission by adopting data packet division. The segmentation method is suitable for network communication, can ensure the integrity and reliability of data, and the data packet is usually of a fixed size so as to be convenient for transmission and processing;
in the Modbus serial power communication protocol or the DNP3 protocol, frame segmentation is adopted, and a frame is a specific data structure and contains information such as a start identifier, a length, verification and the like of data. Frame segmentation is applicable to scenarios where a data structure needs to be defined in a communication protocol so that a receiving party can correctly parse and process data;
the power data comprises complex data structures, such as time domain waveform data and frequency domain data, wherein nested data fields, labels and the like, and when the data are processed, the data structures are disassembled into separate fields for processing by adopting data structure disassembly;
in the scenes of real-time monitoring and control, fault diagnosis, maintenance and the like, the power data is transmitted in a continuous data stream form, no explicit segmentation symbol or identification exists, and in the case, the data stream is required to be segmented according to the characteristics and rules of the data; the data stream segmentation is suitable for scenes requiring real-time processing of continuous data streams, and can be performed according to the characteristics of data.
After splitting is completed according to the type of the electric power data, if the staff is in the areas with excellent signals and the like, the split data can be directly transmitted through the communication module through the network.
If staff is in the poor or no signal's of signal area under, communication module can automated inspection current network signal strength, then select suitable network transmission between network, satellite, wherein unimportant data, need not the data of instant transmission and pass through storage module and buffer, when the staff removes to the better area of signal, communication module can send these data voluntarily, need not secondary operation, and then effectual transmission efficiency who has improved data, need not the staff and wait for data transmission to accomplish in the spot always simultaneously, promote work efficiency.
Example two
As shown in fig. 1, in this example, after the information packetizing module splits the power data, the information encrypting module starts to encrypt the data, and encrypts each type of data independently, for example, the current value, the voltage value and other conventional data, and adopts symmetric encryption, and can encrypt the data by using an AES symmetric encryption algorithm, so that the security of the data can be effectively ensured in the transmission process.
When important data in the electric power data to be transmitted, such as electric power fault data (preventing leakage from being attacked), time domain waveform data and the like, an asymmetric encryption method is adopted, namely, encryption is carried out on the data in the form of a primary-secondary password, firstly, after the information packetizing module splits certain data, the information encryption module encrypts the data in the class, wherein a main data (namely, the beginning of each class of data) is selected, then the data is encrypted, the number of bits of a primary password is 64, 8-18 bits in the password is in a vacant state (according to the regulation of the data quantity), then other secondary auxiliary data packets are encrypted in the form of 6-bit sub-passwords respectively, one bit in the 6-bit numbers can fill the vacant in the primary password, the complete password is a password database in the data receiving end, and the data packets can be opened when the filled primary password is consistent with the password of the receiving end, so that the situation that the data packets are lost is effectively avoided, and meanwhile, the encryption of the data is realized in the transmission process.
The embodiments of the present invention have been presented for purposes of illustration and description, but are not intended to be exhaustive or limited to the invention in the form disclosed, and although the invention has been described in detail with reference to the embodiments, it will be apparent to those skilled in the art that modifications may be made to the technical solutions described in the foregoing embodiments, or equivalents may be substituted for some of the technical features thereof.
Claims (7)
1. An electrical emergency wireless broadband communication apparatus, comprising:
the communication module is used for receiving and sending information;
the information sub-packaging module is used for splitting information in the power equipment so that each piece of information occupies only a small part of memory;
the information encryption module is used for independently encrypting the information split by the information subpackaging module, wherein the encryption password is divided into a primary password and a secondary password;
the operation module is composed of a display screen and operation keys, and a worker can control the operation of other modules through the operation module.
2. A power emergency wireless broadband communication apparatus according to claim 1, wherein: the communication module comprises a multidimensional communication unit, an anti-interference unit and an expansion unit;
the multidimensional communication unit is used for integrating network, telephone and satellite signals, and can flexibly adjust different communication strategies when sending the information split by the information sub-packaging module;
the anti-interference unit comprises modulation and demodulation, frequency hopping and a filter, wherein the modulation and demodulation is used for converting the information split by the information subpackaging module into a signal with specific frequency, then the communication module is used for information transmission, the frequency hopping can correct the frequency of information transmission in the transmission process, and meanwhile, the filter is used for removing unnecessary frequencies.
3. A power emergency wireless broadband communication apparatus according to claim 2, wherein: the modulation and demodulation method in the anti-interference unit comprises the following steps:
s1: determining an original signal, firstly determining the original signal to be transmitted or received in an anti-interference unit, and determining the original signal through the multi-dimensional communication unit;
s2: selecting a modulation or demodulation mode, and selecting any mode of amplitude modulation, frequency modulation and phase modulation according to the characteristics of signals and transmission requirements;
s3: determining modulation or demodulation parameters, determining parameters of modulation or demodulation, including carrier frequency, modulating or demodulating signals by using modulation or demodulation software, and generating specified signals;
s4: and signal processing, which is used for transmitting or analyzing and receiving the modulated or demodulated signal.
4. A power emergency wireless broadband communication apparatus according to claim 1, wherein: the information packetizing module is internally provided with a Python program, and the Python program comprises character string segmentation data, data packet segmentation, frame segmentation, data structure disassembly and data stream segmentation, wherein the character string segmentation data needs to be converted into character strings through the Python program, so that information segmentation and transmission are facilitated.
5. A power emergency wireless broadband communication apparatus according to claim 4, wherein: the data structure disassembly is used for disassembling time domain waveform data, frequency domain data and phase data in the power data.
6. A power emergency wireless broadband communication apparatus according to claim 1, wherein: the information encryption module classifies the split information of the information packetizing module, encrypts the split data and adopts two modes of symmetric encryption and asymmetric encryption.
7. A power emergency wireless broadband communication apparatus according to claim 6, wherein: the asymmetric encryption adopts a primary-secondary password form to encrypt, namely, the data under the same category comprises a primary password and a secondary password.
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