my country has a vast land and abundant resources, and there is a large amount of information transmission in the fields of electricity, water conservancy, transportation, and disaster reduction. However, in most remote areas, mobile phone signals are weak, or even in areas where there is no mobile phone signal at all. It has become a problem to transmit information.
The technical solution of position tracking monitoring and emergency communication system based on Beidou RDSS short message communication satellite consists of field end and central office end. The Beidou handheld terminal, Beidou vehicle-mounted terminal, Beidou ship-borne terminal, etc. at the field end are sent to the receiving device at the central office through the new communication link of the Beidou satellite, so as to realize transparent data transmission with the central office. After the central office receives the Beidou message, it analyzes and transmits the data to the user's business system through the software of the Beidou communication front-end server to realize the user's business function.
Architecture of position tracking monitoring and emergency communication system based on Beidou RDSS short message communication satellite
Functional Description of Field Terminal
The field end supports various devices such as hand-held, vehicle-mounted, and ship-mounted, and is suitable for various scenarios.
The terminals at the field end include handheld, ship-borne, and vehicle-mounted devices, all of which can support stand-alone operation. In the stand-alone operation mode, the device can continuously report the location to the central office when it is turned on, and the central office can display the location information in the GIS system after receiving it. At the same time, handheld, ship-borne, and vehicle-mounted devices can all support Bluetooth or Wi-Fi connection to Tiandi Satcom APP. In the APP, users can perform the following functions:
- Freely send satellite messages/SMS
- Fast track access to command center communications
- Safety report/SOS alarm function
- Get offline messages
- Various satellite maps can be switched freely
- Live location sharing at any time
- Start position automatic reporting/limit tracking function
- Compass to view location
- Longitude and latitude Sunrise and sunset query
- Check device status
Panco's Beidou box terminal has a hardware with a one-key SOS button. In case of emergency, the user can manually start SOS and ask for help from the background. The background administrator can analyze the user's trajectory and current point status through the web system;
Local end function description
The central office is composed of Beidou command aircraft, Beidou satellite transceiver unit, Beidou multi-card machine, Beidou communication front-end server, and is connected by network.
Local system structure
The Beidou commander at the central office is used for receiving, and the sending of short messages is completed by the Beidou satellite transceiver unit or the Beidou multi-card machine. For the sending device, the user can choose one of the two, and the receiving device must use the Beidou commander. , the central office should complete the following functions:
1. The Beidou communication front-end server needs to deploy the Beidou protocol processing background, data logic centralized processing background, application business management background, local core database, Beidou position monitoring background, and application APP background customized and developed by Panco Intelligent;
2. The Beidou communication front-end server receives various data sent by each on-site Beidou terminal and saves them in the database of the Beidou communication front-end server;
3. Implemented on the program of the Beidou communication front-end server: the Beidou digital transmission terminal on the simulation site maintains a TCP/IP real-time connection with the main station. When the user business system makes a data request, it fetches the latest data from the database of the local Beidou communication front-end server and sends it to the user business system;
4. When the authority end receives the Beidou message from the field end, the office end can use the Beidou satellite transceiver unit or Beidou multi-card machine to send a receipt to the Beidou digital transmission terminal;
Beidou location monitoring platform introduction
When the user uses the Beidou equipment on the field side, a large amount of location data and message data are generated. The Beidou location monitoring platform will read these data from the database and display them to the user in a visual way such as GIS and charts. The management platform adopts the CIS architecture Realize the management of the system by business personnel, realize the real-time management and monitoring of the Beidou command plane, Beidou multi-card machine, and Beidou satellite transceiver unit, and can monitor the intelligent inspection of the channel in the background on the page. If there is a fault alarm, professional Maintenance personnel can operate and maintain it; at the same time, they can set and manage various parameter data, user data, Beidou terminal data, and waiting data of the platform.
The general display platform adopts B/S architecture, so that leaders or users can intuitively see the map location information, short message history record information, coordinate history record information, travel track information, etc. of the Beidou terminal, providing users with general information display.
Panco's local deployment deploys multiple backgrounds to the user's server, and the user does not need to spend several months on development. The current system is a basic short message communication management function. If the user has additional value-added application service requirements, our company supports paid customization;
System technical characteristics
1. The product is easy to use and easy to maintain
The construction technicians of this scheme can complete the equipment installation and commissioning work independently after simple training. There is no need to change the system configuration when the on-site terminal equipment is moved or changed, which is convenient for maintenance.
2. Does not occupy other network resources
With the informatization and automation of the Internet of Things getting higher and higher, limited IP resources are stretched for distribution and application. When using other methods of communication channel construction, it is necessary to add a large number of devices in scenarios such as user application sites and user companies, which will inevitably occupy a large amount of IP resources. At the same time, data collection needs to pass through the user information intranet, which needs to increase the bandwidth of the user information intranet . The Beidou communication channel does not occupy the user's intranet IP, nor does it occupy the bandwidth of the user's information intranet.
3. The Beidou communication channel is free and the maintenance cost is low
The Beidou satellite system is currently completely free for civilian use, and there is no need to pay monthly rent fees like renting a mobile phone public network. In the future, when the service fee is charged by the state, the annual service fee will be charged according to "hundreds of yuan/point·year".
In the later operation and maintenance, if there is a device failure, it is only necessary to diagnose the fault of the device itself, and there is no need to judge complicated path problems like other communication links .
4. Communication bandwidth
Downlink bandwidth: Whether it is a minute card or a second card, there is no limit on the data receiving frequency, and multiple messages sent by multiple terminals can be received at the same time.
Uplink bandwidth: Beidou satellite communication supports the short message transmission function, and currently supports a message length of 38 Chinese characters.