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CN-114650525-B - Emergency communication method and system based on Beidou satellite navigation system

CN114650525BCN 114650525 BCN114650525 BCN 114650525BCN-114650525-B

Abstract

The invention discloses an emergency communication method and system based on a Beidou satellite navigation system, wherein an emergency information receiving module receives emergency notification information sent by different channels through a plurality of interfaces and adds information source fields into a received emergency notification information message; the emergency information processing module processes the emergency notification information received by the emergency information receiving module, determines the emergency grade of the information according to the information source and the information content, and sends the processed emergency notification information to the Beidou satellite navigation system, wherein the Beidou satellite navigation system broadcasts the emergency notification information, and the terminal equipment receives the emergency notification information sent by the Beidou satellite navigation system and processes the received information according to the indication of the information content. The invention can effectively solve the problem that the emergency notification information cannot be acquired in a short time due to the fact that the prior art has no mobile communication signal in the emergency situation.

Inventors

  • XU XIANGBIN
  • GAO FENG

Assignees

  • 泰斗微电子科技有限公司

Dates

Publication Date
20260505
Application Date
20201221

Claims (12)

  1. 1. An emergency communication method based on a Beidou satellite navigation system is characterized by comprising the following steps: The emergency information receiving module receives the emergency notification information sent by different channels through a plurality of interfaces, and adds a field of an information source to the received emergency notification information message; the emergency notification information message comprises an information number, an information length, an information start symbol, information content, an information end symbol and a next information number; The emergency information processing module processes the emergency notification information received by the emergency information receiving module, determines the emergency level of the information according to the information source and the information content, and sends the processed emergency notification information to the Beidou satellite navigation system; The Beidou satellite navigation system broadcasts the emergency notification information, wherein the emergency notification information is carried on navigation positioning signals of the Beidou satellite navigation system, and the Beidou satellite navigation system broadcasts the emergency notification information by broadcasting the navigation positioning signals; specifically, the emergency notification information is carried in PageID which is not allocated for use in the subframe 3 portion of the B1C signal; the terminal equipment receives emergency notification information sent by the Beidou satellite navigation system and processes the received information according to the indication of the information content; The terminal device further performs the following processing steps, including: when the emergency notification information is received, checking corresponding preset number of characters by adopting respective check symbols, wherein the information content of the emergency notification information comprises check symbols and check segment numbers of the preset number of characters; When the preset number of characters is verified to be not passed, determining a field where the characters are located according to the verification segment numbers of the preset number of characters, so that after the emergency notification information is received again, the field is verified until all the characters of the information content are identified.
  2. 2. The emergency communication method based on the Beidou satellite navigation system according to claim 1, wherein the emergency information receiving module further performs the following steps: Extracting information security parameters from the emergency notification information; When the information security level parameter of the emergency notification information to be sent is higher than a preset first threshold value, judging whether the information security level parameter of the emergency notification information currently being sent is lower than the information security level parameter of the emergency notification information to be sent, if so, interrupting the sending of the current information, and immediately sending the emergency notification information to be sent to the emergency information processing module.
  3. 3. The emergency communication method based on the Beidou satellite navigation system according to claim 1, wherein the emergency information processing module controls the emergency notification information to be sent to the Beidou satellite navigation system by: Extracting emergency grade parameters of emergency notification information in a queue to be sent; Determining priority information of the emergency notification information according to the magnitude of the emergency grade parameter of the emergency notification information; and sequencing the priority information of the emergency notification information in the queue to be sent from high to low so as to send the emergency notification information to the Beidou satellite navigation system according to the sequenced queue to be sent.
  4. 4. The emergency communication method based on the beidou satellite navigation system according to claim 1, wherein the terminal equipment further performs the following processing steps, including: when the incomplete information content or the decoding error of the emergency notification information is detected, the missing field or the decoding error field is used as a field to be identified, so that the field to be identified is checked after the emergency notification information is received next time.
  5. 5. The emergency communication method based on the Beidou satellite navigation system according to claim 3, wherein the emergency information processing module further performs the following steps: extracting an emergency grade parameter of the emergency notification information; and when the emergency grade parameter of the emergency notification information is larger than a preset emergency threshold, encoding the information content of the emergency notification information into an information code number.
  6. 6. The Beidou satellite navigation system based emergency communication method of claim 5, further comprising: When the emergency level of the emergency notification information is larger than the emergency threshold, the emergency information receiving module generates a corresponding identification signal and injects the emergency notification information and the identification signal thereof into the Beidou satellite navigation system; The Beidou satellite navigation system broadcasts the emergency notification information and the corresponding identification signals; When the terminal equipment receives the identification signal, an information receiving instruction is generated, and emergency notification information sent by the Beidou satellite navigation system is received in response to the information receiving instruction.
  7. 7. The emergency communication method based on the Beidou satellite navigation system according to claim 2, wherein the information content further comprises an identity information base, and the terminal equipment further performs the following processing steps, including: Extracting information security parameters from the emergency notification information; When the information security level parameter is higher than the first threshold value, acquiring identity authentication information of a user, and matching the identity authentication information with the identity information library; if the matching is successful, the identity authentication of the user is passed, and a decoding instruction is generated; And responding to the decoding instruction, and decoding the emergency notification information.
  8. 8. The emergency communication method based on the Beidou satellite navigation system according to claim 5, wherein the terminal equipment further performs the following processing steps, including: extracting an emergency grade parameter of the emergency notification information; Judging whether the emergency grade parameter of the emergency notification information is larger than the emergency threshold value, if so, making a sound to remind a user, and meanwhile displaying the emergency notification information, and if not, displaying the emergency notification information to remind the user.
  9. 9. The emergency communication system based on the Beidou satellite navigation system is characterized by comprising the Beidou satellite navigation system, terminal equipment and an emergency command system, wherein the emergency command system comprises an emergency information receiving module and an emergency information processing module; The emergency information receiving module is provided with a plurality of interfaces and is used for receiving emergency notification information sent by different channels and adding information source fields into a received emergency notification information message, wherein the emergency notification information message comprises an information number, an information length, an information start symbol, information content, an information end symbol and a next information number; The emergency information processing module is used for processing the emergency notification information received by the emergency information receiving module, determining the emergency level of the information according to the information source and the information content, and sending the processed emergency notification information to the Beidou satellite navigation system; The Beidou satellite navigation system is used for broadcasting the emergency notification information, wherein the emergency notification information is carried on navigation positioning signals of the Beidou satellite navigation system, and the Beidou satellite navigation system broadcasts the emergency notification information by broadcasting the navigation positioning signals, and specifically, the emergency notification information is carried on PageID which is not distributed to be used in a subframe 3 part of the B1C signal; The terminal equipment is used for receiving the emergency notification information sent by the Beidou satellite navigation system and processing the received information according to the indication of the information content; The terminal device further performs the following processing steps, including: when the emergency notification information is received, checking corresponding preset number of characters by adopting respective check symbols, wherein the information content of the emergency notification information comprises check symbols and check segment numbers of the preset number of characters; When the preset number of characters is verified to be not passed, determining a field where the characters are located according to the verification segment numbers of the preset number of characters, so that after the emergency notification information is received again, the field is verified until all the characters of the information content are identified.
  10. 10. The Beidou satellite navigation system based emergency communication system of claim 9, wherein the emergency information receiving module comprises: The security level parameter extraction unit is used for extracting information security level parameters in the emergency notification information; And the information priority sending unit is used for judging whether the information security parameter of the emergency notification information currently being sent is lower than the information security parameter of the emergency notification information to be sent or not when the information security parameter of the emergency notification information to be sent is higher than a preset first threshold value, and if so, interrupting the sending of the current information and immediately sending the emergency notification information to be sent to the emergency information processing module.
  11. 11. The Beidou satellite navigation system based emergency communication system of claim 9, wherein the emergency information processing module comprises: The first emergency grade parameter extraction unit is used for extracting emergency grade parameters of emergency notification information in a queue to be sent; an information priority determining unit, configured to determine priority information of the emergency notification information according to a magnitude of an emergency level parameter of the emergency notification information; and the sending sequencing unit is used for sequencing the information in the queue to be sent according to the priority information of the emergency notification information so as to send the emergency notification information to the Beidou satellite navigation system according to the sequenced queue to be sent.
  12. 12. The emergency communication system based on the beidou satellite navigation system according to claim 9, wherein said terminal equipment comprises; A second emergency level parameter extracting unit, configured to extract an emergency level parameter of the emergency notification information; The system comprises a notification unit, a user prompting unit and a user prompting unit, wherein the notification unit is used for judging whether the emergency grade parameter of the emergency notification information is larger than an emergency threshold value, if so, sounding to remind the user and simultaneously displaying the emergency notification information, and if not, displaying the emergency notification information to remind the user.

Description

Emergency communication method and system based on Beidou satellite navigation system Technical Field The invention relates to the technical field of satellite communication, in particular to an emergency communication method and system based on a Beidou satellite navigation system. Background For the emergency situations such as earthquake, local sudden bad weather, war air attack, anti-terrorism and the like, the situation that mobile communication is interrupted, power is interrupted or mobile communication cannot be covered can possibly occur in the area, emergency notification information can not be acquired by people in the area in a short time, the best self-rescue time is delayed, and more life and property losses can possibly be caused. Disclosure of Invention The embodiment of the invention provides an emergency communication method and system based on a Beidou satellite navigation system, which can effectively solve the problem that emergency notification information cannot be acquired in a short time due to the fact that no mobile communication signal exists in the emergency situation in the prior art. An embodiment of the invention provides an emergency communication method based on a Beidou satellite navigation system, which comprises the following steps: The emergency information receiving module receives the emergency notification information sent by different channels through a plurality of interfaces, and adds a field of an information source to the received emergency notification information message; The emergency information processing module processes the emergency notification information received by the emergency information receiving module, determines the emergency level of the information according to the information source and the information content, and sends the processed emergency notification information to the Beidou satellite navigation system; The Beidou satellite navigation system broadcasts the emergency notification information; And the terminal equipment receives the emergency notification information sent by the Beidou satellite navigation system and processes the received information according to the indication of the information content. In some embodiments, the emergency information receiving module further performs the steps of: Extracting information security parameters from the emergency notification information; When the information security level parameter of the emergency notification information to be sent is higher than a preset first threshold value, judging whether the information security level parameter of the emergency notification information currently being sent is lower than the information security level parameter of the emergency notification information to be sent, if so, interrupting the sending of the current information, and immediately sending the emergency notification information to be sent to the emergency information processing module. In some embodiments, the emergency information processing module controls the emergency notification information to be sent to the beidou satellite navigation system by: Extracting emergency grade parameters of emergency notification information in a queue to be sent; Determining priority information of the emergency notification information according to the magnitude of the emergency grade parameter of the emergency notification information; and sequencing the priority information of the emergency notification information in the queue to be sent from high to low so as to send the emergency notification information to the Beidou satellite navigation system according to the sequenced queue to be sent. In some embodiments, the emergency notification information is carried on a navigation positioning signal of the Beidou satellite navigation system; The Beidou satellite navigation system broadcasts the emergency notification information by broadcasting navigation positioning signals. In some embodiments, the emergency notification information message includes an information number, an information length, an information start symbol, information content, an information end symbol, and a next information number. In some embodiments, the terminal device further performs the following processing steps, including: when the emergency notification information is received, checking corresponding preset number of characters by adopting respective check symbols, wherein the information content of the emergency notification information comprises check symbols and check segment numbers of the preset number of characters; When the preset number of characters is verified to be not passed, determining a field where the characters are located according to the verification segment numbers of the preset number of characters, so that after the emergency notification information is received again, the field is verified until all the characters of the information content are identified. In some embodiments, the terminal device fur