CN205810129U - Vehicle monitoring system based on Beidou satellite navigation and positioning - Google Patents

Abstract

The utility model discloses a vehicle monitoring system based on big dipper satellite navigation location relates to the business technology field who utilizes user or terminal position. The monitoring system comprises a Beidou communication system, a vehicle-mounted terminal, a GPRS communication system and a monitoring center, the Beidou navigation system is connected with the data input end of the vehicle-mounted terminal, the Beidou navigation system is used for providing positioning service for the vehicle-mounted terminal, the vehicle-mounted terminal passes through the GPRS communication system and the two-way data interaction of the monitoring center, positioning information provided by the Beidou navigation system is transmitted to the monitoring center through the GPRS communication system, and a control command uploaded by the monitoring center is transmitted to the vehicle-mounted terminal through the GPRS communication system to be processed. The monitoring system applies the Beidou satellite positioning system to a vehicle positioning monitoring system, integrates a sensor technology, a wireless communication technology and a geographic information technology, and realizes the functions of vehicle monitoring, track tracking, real-time positioning and the like.

Description

Vehicle monitoring system based on Beidou satellite navigation and positioning

technical field

The utility model relates to the field of business technology utilizing user or terminal positions, in particular to a vehicle monitoring system based on Beidou satellite navigation and positioning.

Background technique

Vehicle monitoring system is an important part of ITS (Intelligent Transportation Systems), which integrates satellite positioning system (GNSS), GIS, modern computer, wireless communication and other technologies representing advanced productivity. Mainly manifested in the following aspects:

1) Through the vehicle monitoring system, the monitoring personnel can understand the road conditions in real time and can immediately communicate the real-time road conditions to the driver, providing convenience for them to choose roads and improving the traffic efficiency of vehicles.

2) For important cargo transportation, for the sake of safety, the driving route can be prescribed in advance, so that the driver can drive according to the established route. If the deviation is far, the vehicle terminal will immediately alarm the monitoring center.

3) When the driver encounters an emergency, he can use the one-key alarm function of the external device to send an alarm to the monitoring center. A terminal with an external camera can also capture live images and send them to the server. This is very helpful for the monitoring center to make correct decisions in time.

The entire computer technology space technology of the United States is in the leading position in the world, so it also has a very high technical advantage in vehicle monitoring. Both the accuracy of vehicle positioning and the performance of the monitoring system represent the highest level in the world. Also, even if we could use GPS all the time for the foreseeable time, its security is also an issue. It is completely under the control of the United States, and the United States claims to be the world's policeman, causing troubles all over the world. In the past two years, it has begun to deploy a strategy of returning to the Asia-Pacific. These international political factors remind us that without permanent friends, we may lose the right to use GPS at any time, because the United States has no obligation to provide us with free services forever. Compared with the vast United States, Japan’s traffic pressure is particularly huge. Tokyo’s population density far exceeds that of Beijing, making it one of the most congested cities in the world. Therefore, the development of GPS applications in Japan is even more imminent. The main problem it faces is how to improve road utilization.

In the past ten years, the application of vehicle monitoring system in my country has experienced a relatively tortuous development process. Although the early stand-alone GIS system has basically matured, it has to be subject to many restrictions when using it. Users of this mode can only be limited to It is used on the installed system, and the electronic map data will also face problems such as leaks and complicated updates. In recent years, the vehicle monitoring system of C/S mode, which has been widely used, has solved many problems existing in the stand-alone GIS system, such as: centralized update of electronic map data, sharing of electronic map data, data confidentiality, etc., but users of this mode It is still necessary to install the software and data in the monitoring user's local area (local area network), which requires relatively high data security and monitoring terminals, and usually the system construction and maintenance costs are relatively high. And the vehicle monitoring system of the B/S mode that develops rapidly in the past two years has greatly improved the ease of use that the user carries out vehicle monitoring, and the user can monitor the vehicle as long as the user enters the URL in HTML browsers such as IE, but the mode's The function of the vehicle monitoring system is largely limited by the browser itself, especially now more and more ad blocking plug-ins applied to the browser also make some vehicle monitoring systems based on the B/S mode continue to have problems. In the process of project implementation, users usually need the system to be convenient and fast (ease of use), and also need the system functions to be as rich as possible. Therefore, it is necessary to study how to apply thin client technology to balance the above C/S mode vehicle monitoring system The defect of the vehicle monitoring system in the B/S mode can enable more users to use the system and effectively reduce the user's use cost on the basis of maintaining user convenience and relatively comprehensive functions to the greatest extent.

Utility model content

The technical problem to be solved by the utility model is to provide a vehicle monitoring system based on Beidou satellite navigation and positioning. This system applies the Beidou satellite positioning system to the vehicle positioning monitoring system, and realizes functions such as vehicle monitoring, trajectory tracking, and real-time positioning. .

In order to solve the above technical problems, the technical solution adopted by the utility model is: a vehicle monitoring system based on Beidou satellite navigation and positioning, which is characterized in that it includes Beidou communication system, vehicle terminal, GPRS communication system and monitoring center, Beidou navigation system Connected to the data input terminal of the vehicle-mounted terminal, the Beidou navigation system is used to provide positioning services for the vehicle-mounted terminal, and the vehicle-mounted terminal interacts with the two-way data of the monitoring center through the GPRS communication system for connecting the Beidou navigation system The positioning information provided is transmitted to the monitoring center through the GPRS communication system, and the control commands uploaded by the monitoring center are transmitted to the vehicle-mounted terminal through the GPRS communication system for processing.

A further technical solution is: the vehicle-mounted terminal includes an antenna, a Beidou satellite receiver, a control module, a GPRS module and a power supply module, the antenna is connected to the signal input end of the satellite receiver, and the signal output of the satellite receiver is The terminal is connected to the control module through a serial port, and the satellite receiver is used to solve the navigation message received by the antenna, and transmit the solved data to the control module in the form of a standard protocol; the control The module is connected to the GPRS module through a serial port, and the control module is used to extract latitude and longitude information, speed information and time information from the data transmitted by the receiver according to the standard protocol, and encapsulate the extracted data according to the communication protocol , and control the GPRS module to realize data transmission and reception; the GPRS module is used to transmit and receive data to the monitoring center through the mobile digital network; the power supply module is connected to the power supply input of the module that needs power supply in the vehicle terminal, It is used to provide working power for it.

A further technical solution is: the satellite receiver uses a MXTOS2-200 board.

A further technical solution is: the control module uses a Cortex A8 processor.

A further technical solution is: the GPRS module uses a SIM900 development board.

A further technical solution is: the monitoring center includes a remote server and a monitoring client, the vehicle-mounted terminal is connected to the remote service through a GPRS communication system, and the remote server is connected to several monitoring clients through a wired network.

The beneficial effect produced by adopting the above-mentioned technical scheme is that this system combines various features and advantages of geographic information system (GIS), applies the Beidou satellite positioning system to the vehicle positioning monitoring system, and displays the real-time position of the moving vehicle on the On the electronic map, sensor technology, wireless communication technology, and geographic information technology are integrated to manage the driving of vehicles and drivers, and realize functions such as vehicle monitoring, trajectory tracking, and real-time positioning. It has practical significance for the transportation industry to strengthen the management of moving vehicles and accelerate the promotion and application of my country's Beidou satellite positioning system.

Description of drawings

Below in conjunction with accompanying drawing and specific embodiment, the utility model is described in further detail.

Fig. 1 is the functional block diagram of the system described in the utility model;

Fig. 2 is a functional block diagram of the vehicle-mounted terminal in the utility model;

Fig. 3 is a flow chart of positioning information reception in the utility model;

Fig. 4 is the flow chart of GPRS data receiving in the utility model;

Fig. 5 is the flowchart of server receiving message in the utility model;

Fig. 6 is a functional block diagram of the monitoring client in the utility model;

Fig. 7 is the flowchart of real-time positioning function in the utility model;

Fig. 8 is a flow chart of the historical track function in the utility model.

detailed description

Below in conjunction with the accompanying drawings in the utility model embodiment, the technical solution in the utility model embodiment is clearly and completely described, obviously, the described embodiment is only a part of the utility model embodiment, rather than all implementation example. Based on the embodiments of the present utility model, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

In the following description, a lot of specific details have been set forth in order to fully understand the utility model, but the utility model can also be implemented in other ways that are different from those described here, and those skilled in the art can do so without violating the connotation of the utility model. Under the circumstances, similar promotion is done, so the utility model is not limited by the specific embodiments disclosed below.

As shown in Figure 1, the utility model discloses a vehicle monitoring system based on Beidou satellite navigation and positioning, including a Beidou communication system, a vehicle terminal, a GPRS communication system and a monitoring center. The Beidou navigation system is connected to the data input end of the vehicle terminal, and the Beidou navigation system is used to provide positioning services for the vehicle terminal, and the vehicle terminal communicates with the monitoring center through the GPRS communication system in two directions for data The positioning information provided by the Beidou navigation system is transmitted to the monitoring center through the GPRS communication system, and the control commands uploaded by the monitoring center are transmitted to the vehicle terminal through the GPRS communication system for processing. The monitoring center includes a remote server and a monitoring client, the vehicle-mounted terminal is connected to the remote service through a GPRS communication system, the remote server is connected to several monitoring clients through a wired network, and a database is provided in the remote server .

The vehicle-mounted terminal is responsible for receiving and processing the positioning information of the Beidou satellite, sending the positioning information to the remote server, and receiving and responding to the control commands sent by the remote server; the monitoring center is responsible for receiving, storing and displaying the data of the vehicle-mounted terminal. At the same time, the remote control of the vehicle terminal is realized.

As shown in Figure 2, the vehicle-mounted terminal includes an antenna, a Beidou satellite receiver, a control module, a GPRS module and a power supply module, the antenna is connected to the signal input end of the satellite receiver, and the signal output of the satellite receiver The terminal is connected to the control module through a serial port, and the satellite receiver is used to solve the navigation message received by the antenna, and transmit the solved data to the control module in the form of a standard protocol; the control The module is connected to the GPRS module through a serial port, and the control module is used to extract latitude and longitude information, speed information and time information from the data transmitted by the receiver according to the standard protocol, and encapsulate the extracted data according to the communication protocol , and control the GPRS module to realize data transmission and reception; the GPRS module is used to transmit and receive data to the monitoring center through the mobile digital network; the power supply module is connected to the power supply input of the module that needs power supply in the vehicle terminal, It is used to provide working power for it.

The receiver module on the vehicle terminal of the system includes MXTOS2-200. MXTOS2-200 is a GPS/Beidou dual-mode receiver that can provide high-precision position, speed, time and other information. The control module uses a Cortex A8 processor, the highest performance and most power efficient processor ever developed by ARM. The rate of the Cortex-A8 processor ranges from 600MHz to more than 1GHz, which can meet the requirements of those mobile devices that need to work under 300mW and optimize power consumption; the GPRS module realizes the communication between the terminal and the monitoring center, and can be quickly applied The SIM900 development board for product development is connected to the main control module through the serial port, and ARM sends AT commands to SIM900 through the serial port. The vehicle-mounted terminal is installed in the positioning vehicle, and the vehicle-mounted 12V DC power supply terminal is usually used to supply power to each part.

Positioning information reception: The output data of the Beidou positioning module in the system follows the NMEA-0183 standard, and outputs positioning information with the protocol of the Beidou II. When the vehicle-mounted terminal starts positioning, the control module needs to extract the BDRMC data frame from the data transmitted by the receiver, and complete the collection of positioning information by extracting and processing the data in the data frame. The positioning information receiving process is shown in Figure 3 shown.

GPRS wireless communication: The GPRS module of the vehicle terminal is responsible for data exchange with the monitoring center through the GPRS network, sending vehicle positioning information and receiving control commands from the monitoring center. The communication function is divided into the function of receiving data and the function of sending data. Data sending function: the ARM controller uses the serial port to control the GPRS module to connect to the remote server; after connecting to the remote server, the ARM will transmit the processed data to the GPRS module, and control the GPRS module to transmit the data to the remote server, GPRS data receiving process As shown in Figure 4.

Remote server: The remote server is the link between the monitoring center and the vehicle-mounted terminal. On the one hand, it is responsible for receiving the location information of the vehicle-mounted terminal, storing the information in the database, and forwarding control commands to the user's vehicle; on the other hand, it communicates with the monitoring client. According to the user's request, the operation on the data is completed, and the operation result of the database is responded to the user. The flow of the server receiving the message is shown in Figure 5.

The monitoring client is the core part of the entire vehicle monitoring system, and it is the user-oriented window of the system. According to different functions, the monitoring client can be divided into three parts, as shown in Figure 6, the monitoring client includes a GIS function module, a data management module and a communication module, and the GIS function module is used to realize map display operations, Vehicle real-time positioning, historical track display and driving area limitation; the data management module is used to realize user access login, information maintenance and historical record query; the communication module is used to realize data communication, remote monitoring and alarm.

GIS function module: The GIS function module is the basis of the entire client, providing an important guarantee for the visual display of the vehicle position. The GIS function module provides a series of map display operation functions, such as: map loading, map zoom in, zoom out, roaming, layer management, location query, etc. Functions such as real-time positioning of vehicles, historical track playback, and area restrictions have been realized.

Vehicle real-time positioning: Vehicle real-time positioning is to realize the drawing of vehicle primitives in the layer by receiving the current position information of the vehicle in the server database. In the monitoring system, the software will update the vehicle location information every 10 seconds. In order to ensure the operating efficiency of the software, the multi-thread method is used to realize the real-time positioning function, and the drawing of each car is completed in a separate thread. The program flow of the real-time positioning function is shown in Figure 7.

Historical track playback: The historical track playback function is to dynamically display the driving track of a specified vehicle within a period of time on the map to help customers observe the vehicle's whereabouts. To play back the historical track, you first need to select the user’s vehicle and the playback time period, and obtain the qualified historical records from the server database according to the selected vehicle and the playback time period. The process of the historical track is shown in Figure 8.

Data management module: The data management module implements functions such as user login, user information modification, user information query, and alarm record query in the monitoring client, providing a safe and effective means for users to query and maintain information.

Communication module: The communication module is a bridge between the monitoring client and the remote server. Through the establishment of communication, the receiving and sending of client data is realized. The client's control instructions to the vehicle are finally forwarded by the server to the designated vehicle, realizing remote monitoring in the true sense.

After the vehicle-mounted terminal of the system is powered on, the serial port and IO port are initialized. The main control module is connected to the Beidou satellite receiver, GPRS module, etc. The core processor of the control module performs data transmission with the GPRS module and the Beidou satellite receiver through the serial port. After the system is powered on, the baud rate of MXTOS2-200 serial port transmission is fixed at 115200bps. When the MXTOS2-200 starts for the first time, there will be a long process of searching for satellites, that is, cold start. After the star search is completed, restarting in a short time can quickly complete the positioning. Send AT commands to the SIM900 module through the serial port. After SIM900GPRS connects to the remote server, it returns "CONNECT OK", which proves that the connection to the server is successful. After the user obtains the system access authority, he can enter the overall interface of the system. The system menu includes functions such as system initialization, re-login to the system, and exit from the system. The "Map" menu contains functions such as map switching, zoom in, zoom out, and layer management. The "Monitoring" menu includes functions such as remote monitoring, speed change curve, and alarm record viewing. When the system is in the real-time monitoring state, the tree view on the right can visually display all the vehicles and drivers currently under control.

This system combines various features and advantages of geographic information system (GIS), applies the Beidou satellite positioning system to the vehicle positioning monitoring system, displays the real-time position of the moving vehicle on the electronic map, and integrates sensor technology and wireless communication technology , Geographical information technology, manage vehicles and drivers, and realize vehicle monitoring, track tracking, real-time positioning and other functions. It has practical significance for the transportation industry to strengthen the management of moving vehicles and accelerate the promotion and application of my country's Beidou satellite positioning system.

Claims (6)

1. a vehicle monitoring system based on Beidou satellite navigation location, it is characterised in that: include Big Dipper communication system, vehicle-mounted Terminal, GPRS communication system and Surveillance center, triones navigation system is connected with the data input pin of described car-mounted terminal, and the Big Dipper is led Boat system is for providing positioning service for described car-mounted terminal, and described car-mounted terminal is by described GPRS communication system and described prison Control center bidirectional data interaction, for sending, by GPRS communication system, the location information that triones navigation system provides to monitoring Center, and control command Surveillance center uploaded sends car-mounted terminal to by GPRS communication system and processes.

2. the vehicle monitoring system positioned based on Beidou satellite navigation as claimed in claim 1, it is characterised in that: described vehicle-mounted Terminal includes that antenna, Beidou satellite receiver, control module, GPRS module and power module, described antenna connect with described satellite The signal input part of receipts machine connects, and the signal output part of described DVB is connected with described control module by serial ports, institute State DVB to resolve for the navigation message that antenna is received, and the data after resolving are with the shape of standard agreement Formula is sent to described control module；Described control module is connected with described GPRS module by serial ports, and described control module is used for Latitude and longitude information, velocity information and temporal information is gone out from the extracting data that described receiver transmits according to standard agreement, and The data extracted are packaged by communication protocol, and control GPRS module and realize transmission and the reception of data；Described GPRS Module is for transmitting and reception data to Surveillance center by mobile digital network；In described power module and described car-mounted terminal The power input needing the module of power supply connects, for providing working power for it.

3. the vehicle monitoring system positioned based on Beidou satellite navigation as claimed in claim 2, it is characterised in that: described satellite Receiver uses MXTOS2-200 template card.

4. the vehicle monitoring system positioned based on Beidou satellite navigation as claimed in claim 2, it is characterised in that: described control Module uses Cortex A8 processor.

5. the vehicle monitoring system positioned based on Beidou satellite navigation as claimed in claim 2, it is characterised in that: described GPRS Module uses SIM900 type development board.

6. the vehicle monitoring system positioned based on Beidou satellite navigation as claimed in claim 1, it is characterised in that: described monitoring Center includes remote server and monitor client, and described car-mounted terminal is by GPRS communication system with described remote service even Connecing, described remote server is connected with several monitor clients by cable network.