CN109839648A - A kind of Beidou positioning device based on network transmission - Google Patents
A kind of Beidou positioning device based on network transmission Download PDFInfo
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Abstract
The Beidou positioning device based on network transmission that the present invention provides a kind of, including master chip, Beidou module and network module, Beidou module and network module are connect with master chip respectively, Beidou module includes Beidou antenna and Beidou positioning chip, network module includes ethernet controller and network transformer, and master chip is also respectively connected with crystal oscillator module, reset circuit, power supply, memory, indicator light and configuration debugging serial ports.Support that Ethernet interface and serial ports carry out data transmit-receive and functional configuration simultaneously, it is interface multiplicity, using flexible, feature-rich；It is transmitted using udp protocol, including link detecting message and position determination data message, communication protocol is light and handy, data transmission is simple and effective；Browser web page is supported to log in access equipment, modification network parameter, user's operation is experienced；Power failure data is not lost, easy to use；Support the input of direct current Width funtion, power supply convenient；There is work light, prompts intuitive.
Description
Technical field
The present invention relates to the communications field, especially a kind of Beidou positioning device based on network transmission.
Background technique
With the continuous reinforcement that China's civil and military informatization and network is built, more and more system requirements field datas
Real-time monitoring and control is based particularly on the location aware of Beidou, but positioning device generally uses serial ports transmission mode, transmission distance
From the short requirement for not adapting to modern monitoring system, the currently employed a set of serial ports of increase turns the network equipment, but complicated in the presence of connection,
Volume is big, individual soldier's expansion removes and receives difficult problem.
Summary of the invention
Goal of the invention: a kind of based on net the technical problem to be solved by the present invention is in view of the deficiencies of the prior art, provide
The Beidou positioning device of network transmission.
The Beidou positioning device based on network transmission that in order to solve the above-mentioned technical problems, the present invention provides a kind of, including
Master chip, Beidou module and network module, Beidou module and network module are connect with master chip respectively, and Beidou module includes Beidou
Antenna and Beidou positioning chip, network module include ethernet controller and network transformer, and master chip is also respectively connected with crystal oscillator
Module, reset circuit, power supply, memory, indicator light and configuration debugging serial ports.When work, Beidou module is obtained by Beidou antenna
Location information is got, location information is admitted to master chip and is analyzed and processed, and master chip exports corresponding link by network module
Detect message and location data information.In the process, can at any time by Ethernet interface access and modify configure, can also by serial ports into
The modification of row parameter and system firmware upgrading, device parameter are stored in internal storage, and power failure data is not lost；Operating process
In, work light prompts current state by different flash patterns；Equipment supports Width funtion input and a key to reset.
In the present invention, workflow is as follows:
Step S1: initialization, default configuration Beidou positioning chip are Beidou operating mode, and master chip controls Ethernet control
Device carries out initial configuration, and creation UDP connection, configuration IP address and port numbers persistently call lwip_ in major cycle
Periodic_handle () agreement kernel Timing Processing subfunction and lwip_pkt_handle () agreement kernel received data packet
Processing subfunction guarantees that LWIP protocol network kernel continues working；
Step S2: waiting Beidou module to send location information and be timed to, and master chip, which calls, sends location information subprogram, solution
The Beidou data for analysing NMEA0183 format are sent out when Beidou data are effective by the information access equipment of network interface+serial ports to the periphery
Location data is sent, wherein reference clock from crystal oscillator module and passes through timer interruption processing subfunction TIM_ when timing ga(u)ge
IRQHandler () is realized；
Step S3: the detecting of network module link is waited to be timed to, the user information equipment transmission link of master chip to the periphery
Message is detected, is wherein realized when timing ga(u)ge by timer interruption processing subfunction TIM_IRQHandler (), reference clock comes
From crystal oscillator module, link detecting message is made of message header and link detecting data packet, and using udp protocol, it is every to set sender
A link, which was sent, every 5 minutes detects message；
Step S4: user logs in access equipment, modification network parameter by web page, and master chip continues to monitor network ginseng
Whether number changes, if network parameter changes, disconnects current network connection, user sets again through new address access
Standby, user's Various types of data is maintained in eeprom memory, and power failure data is not lost；
Step S5: supporting user to pass through serial ports input and output at any time, carries out location data transmission, positioning chip operating mode
Configuration and network module parameter configuration, pass through serial ports interrupt processing subfunction USART_IRQHandler () Lai Shixian.
In the present invention, LWIP protocol realization process is as follows in step S1:
Lwip_comm_init () protocol initializing lwIP agreement, far-end IP address remote ip of setting lwip agreement,
The address mac, the local address ip, mask subnet mask, gateway gateway, log in username user name, passwd password；
Lwip_periodic_handle () agreement kernel Timing Processing subfunction and lwip_ are persistently called in major cycle
Pkt_handle () agreement kernel received data packet processing subfunction guarantees that LWIP network inner continues working；
Subfunction httpd_init () is initialized by web page server function, configures web for this positioning device
Server web page server, fsdata.* subfile is interior to save webpage array, passes through CGI common gateway interface means and SSI takes
Device end insertion means of being engaged in realize the interaction of browser and server；
A new protocol control block UDP PCB is created by newly-built subfunction udp_new (), by connecting subfunction
Udp_connect () is connected to specified remote port, is tied to local address and end by binding subfunction udp_bind ()
Mouthful；
Data are sent out by sending subfunction udp_send (), data are received by call back function udp_recv ()；
If network parameter changes, UDP connection is disconnected by cutting subfunction udp_disconnect (), again through
Lwip_comm_init () protocol port initializes subfunction to initialize lwIP agreement.
In the present invention, master chip is STM32 processing chip.
In the present invention, Beidou positioning chip model UM220-III, USART3 and Beidou positioning chip UM220-III core
Piece transmitting-receiving intersects docking.
In the present invention, Beidou antenna is passive antenna, and Beidou positioning chip UM220 is using passive antenna and RF_IN pin
It is connected directly.
In the present invention, ethernet controller model DM9000.
In the present invention, network transformer model PH163539.
In the present invention, memory model AT24Cxx series EEPROM.
In the present invention, the Beidou location data of parsing serial ports NMEA0183 format is converted to network transmission, adapts to modern net
The demand of network monitoring；Support that Ethernet interface and serial ports carry out data transmit-receive and functional configuration simultaneously, interface multiplicity, using flexible,
It is feature-rich；It is transmitted using udp protocol, including link detecting message and position determination data message, communication protocol is light and handy, data are transmitted
It is simple and effective；Browser web page is supported to log in access equipment, modification network parameter, user's operation is experienced；Power failure data is not
It loses, it is easy to use；Support the input of direct current Width funtion, power supply convenient；There is indicating lamp module, it is easy to operate；Complete machine includes Beidou
Passive antenna, is 4 centimetres of radius of mushroom head, compact, carry it is easy to use, it is cheap, practicability is good.
The utility model has the advantages that there is no integration apparatus, conversion to connect when very good solution Ethernet interface access Beidou localization message
Connect that complicated, volume is big, has a single function, transmits inconvenience, malfunction, do not support the problems such as Beidou+GPS flexible configuration.
Detailed description of the invention
The present invention is done with reference to the accompanying drawings and detailed description and is further illustrated, it is of the invention above-mentioned or
Otherwise advantage will become apparent.
Fig. 1 is electrical block diagram of the present invention.
Fig. 2 is application schematic diagram of the present invention.
Fig. 3 is the program circuit schematic diagram that the present invention is implemented.
Fig. 4 is that the network protocol that the present invention is implemented realizes schematic diagram.
Specific embodiment
It elaborates below in conjunction with attached drawing to the present invention.
The Beidou positioning device based on network transmission that the present invention provides a kind of is core with STM32 processing chip 1, packet
It includes Beidou module 12, network module 13 and peripheral power supply power supply module 8, eeprom memory 9, configuration debugging serial ports 11, refer to
Show lamp 10, crystal oscillator module 6, reset circuit 7, Beidou module 12 includes Beidou positioning chip 2, Beidou antenna 3, and network module 13 wraps
Include ethernet controller 4, network transformer 5.STM32 represents 32 8-digit microcontrollers of ARM Cortex-M kernel.When work, north
The module that struggles against gets location information by Beidou antenna, and location information is admitted to master chip and is analyzed and processed, and master chip passes through
Network module exports corresponding link detecting message and location data information.In the process, it can access and repair by Ethernet interface at any time
Change configuration, parameter modification can also be carried out by serial ports and system firmware upgrades, device parameter is stored in internal storage, power down
Data are not lost；In operating process, work light prompts current state by different flash patterns；Equipment supports Width funtion defeated
Enter and is resetted with a key.
The 2 model UM220-III of Beidou positioning chip, Beidou antenna 3 are passive antenna, support GPS and Beidou
Bimodulus positioning, defaults Beidou station-keeping mode, supports to configure other operating modes.
The 4 model DM9000 of ethernet controller, 5 model PH163539 of network transformer.DM9000 is one
The fully-integrated single-chip Fast Ethernet mac controller of money.PH163539 is the highly integrated chip of network transformer.
The 9 model AT24Cxx series EEPROM of memory, data are not lost after power down, can save user's
Network configuration parameters and positioning chip operating mode.
Communications are carried out using udp protocol and terminal 14 and information access equipment 16, are disappeared comprising link detecting
Breath and position determination data message support web page to modify network parameter.
The configuration debugging mouth 11 is serial ports, and parameter configuration can be carried out by serial ports, and location data can also pass through serial ports
Output.
It is specific:
The USART1 (PA9, PA10) of chip STM32 is handled as configuration debugging serial ports, thus much serial ports support program is downloaded；
USART3 (PB10, PB11) is inputted as Beidou signal, and serial port baud rate is configurable, with domestic high-performance UM220-III chip
Transmitting-receiving intersects docking；UM220 is connected directly using passive antenna with RF_IN pin, and low noise and filter circuit are not necessarily to；Pass through 16
Bit parallel data line (FSMC_D0~D15) is connected with ethernet controller DM9000, it is arranged in 21 (EECS) pins of DM9000
Data bit width, PWRST reset signal, WR (IOW) processor write order, RD (IOR) processor read command, CMD command/data mark
Will；DM9000 meets network transformer PH163539, output difference network signal TD+, TD-, RD+, RD-；EEPROM is used
AT24Cxx series, is connected by IIC interface, for storing user's Various types of data；Direct current Width funtion inputs 5~18V, passes through electricity
Source conversion chip MP1482 is converted to 3.3V and powers to STM32, and design has anti-mis-insertion, reversal connection over-voltage over-current protection circuit.PCB is set
It counts high-frequency signal and low frequency signal separates wiring, antenna traces pay attention to impedance matching, high power device such as network transformer
PH163539, power adapter part such as MP1482 will open a window heat dissipation, pair signals line and differential lines preferably isometric parallel cabling.
Software flow is as shown in figure 3, use modularization and design of interruption thought, according to function in invention software implementation process
It can divide multiple subprograms, cycle through interruption constantly in main program to call corresponding subprogram and complete whole system function
Energy.It is developed in the case where Keil develops environment.
LWIP lightweight IP agreement is selected, whether there is or not operating system supports can all run by LWIP, is keeping the main function of Transmission Control Protocol
The occupancy to RAM is reduced on the basis of energy, is particularly suitable for using in low-end embedded systems, selects raw api interface to realize logical
Letter.Using UDP transport protocol, UDP is not belonging to connecting-type agreement, thus resource consumption is small, processing speed is fast, using in header
It verifies and guarantees data security, furthermore regularly send link detecting message assurance communication connection.
Whole flow process is as follows:
Step S1: initialization, default configuration Beidou positioning chip 2 are Beidou operating mode, and master chip 1 controls ether network control
Device 4 processed carries out initial configuration, and creation UDP connection, configuration IP address and port numbers persistently call lwip_ in major cycle
Periodic_handle () agreement kernel Timing Processing subfunction and lwip_pkt_handle () agreement kernel received data packet
Processing subfunction guarantees that LWIP protocol network kernel continues working；
Step S2: waiting Beidou module 12 to send location information and be timed to, and master chip 1, which calls, sends the sub- journey of location information
Sequence parses the Beidou data of NMEA0183 format, the information access when Beidou data are effective by network interface+serial ports 11 to the periphery
Equipment sends location data, and wherein reference clock from crystal oscillator module 6 and handles subfunction by timer interruption when timing ga(u)ge
TIM_IRQHandler () is realized；
Step S3: the detecting of 13 link of network module is waited to be timed to, the user information equipment send chain of master chip 1 to the periphery
Message is detected on road, is wherein realized when timing ga(u)ge by timer interruption processing subfunction TIM_IRQHandler (), reference clock
From crystal oscillator module 6, link detecting message is made of message header and link detecting data packet, using udp protocol, sets sender
A link, which was sent, every 5 minutes detects message；
Step S4: user logs in access equipment, modification network parameter by web page, and master chip 1 continues to monitor network ginseng
Whether number changes, if network parameter changes, disconnects current network connection, user sets again through new address access
Standby, user's Various types of data is maintained in eeprom memory 9, and power failure data is not lost；
Step S5: supporting user to pass through 11 input and output of serial ports at any time, carries out location data transmission, positioning chip 2 works
13 parameter configuration of pattern configurations and network module passes through serial ports interrupt processing subfunction USART_IRQHandler () Lai Shixian.
Core LWIP protocol realization process in step S1 is described in detail below with reference to Fig. 4:
Lwip_comm_init () protocol initializing lwIP agreement, far-end IP address remote ip of setting lwip agreement,
The address mac, the local address ip, mask subnet mask, gateway gateway, log in username user name, passwd password；
Lwip_periodic_handle () agreement kernel Timing Processing subfunction and lwip_ are persistently called in major cycle
Pkt_handle () agreement kernel received data packet processing subfunction guarantees that LWIP network inner continues working；
Subfunction httpd_init () is initialized by web page server function, configures web for this positioning device
Server web page server, fsdata.* subfile is interior to save webpage array, passes through CGI common gateway interface means and SSI takes
Device end insertion means of being engaged in realize the interaction of browser and server；
A new protocol control block UDP PCB is created by newly-built subfunction udp_new (), by connecting subfunction
Udp_connect () is connected to specified remote port, is tied to local address and end by binding subfunction udp_bind ()
Mouthful；
Data are sent out by sending subfunction udp_send (), data are received by call back function udp_recv ()；
If network parameter changes, UDP connection is disconnected by cutting subfunction udp_disconnect (), again through
Lwip_comm_init () protocol port initializes subfunction to initialize lwIP agreement.
Practical application is as shown in Fig. 2, Beidou positioning information is adopted from Beidou web-transporting device 15 to information access equipment 16
One-way transmission is carried out with udp protocol, is not necessarily to handshake mechanism, regularly sends link detecting message and position determination data message.Based on net
The Beidou positioning device 15 of network transmission is connected with terminal 14, can carry out location data transmission, positioning chip by serial ports
Operating mode configuration and network parameter configuration, while web page being supported to modify network parameter.
The Beidou positioning device based on network transmission that the present invention provides a kind of, implement the technical solution method and
There are many approach, the above is only a preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, various improvements and modifications may be made without departing from the principle of the present invention, these improvements and modifications are also answered
It is considered as protection scope of the present invention.All undefined components in this embodiment can be implemented in the prior art.
Claims (9)
1. a kind of Beidou positioning device based on network transmission, which is characterized in that including master chip (1), Beidou module (12) and
Network module (13), Beidou module (12) and network module (13) are connect with master chip (1) respectively, and Beidou module (12) includes north
Struggle against antenna (3) and Beidou positioning chip (2), and network module (13) includes ethernet controller (4) and network transformer (5), master
Chip (1) is also respectively connected with crystal oscillator module (6), reset circuit (7), power supply (8), memory (9), indicator light (10) and configuration and adjusts
It tries serial ports (11)；When work, Beidou module (12) gets location information by Beidou antenna (3), and Beidou module (12) will determine
Position information is sent to master chip (1) and is analyzed and processed, and master chip (1) exports corresponding link detecting by network module (13) and disappears
It ceases and location data information to information access equipment.
2. a kind of Beidou positioning device based on network transmission according to claim 1, which is characterized in that workflow is such as
Under:
Step S1: initialization, default configuration Beidou positioning chip (2) are Beidou operating mode, and master chip (1) controls ether network control
Device (4) processed carries out initial configuration, and creation UDP connection, configuration IP address and port numbers persistently call lwip_ in major cycle
Periodic_handle () agreement kernel Timing Processing subfunction and lwip_pkt_handle () agreement kernel received data packet
Processing subfunction guarantees that LWIP protocol network kernel continues working；
Step S2: waiting Beidou module (12) to send location information and be timed to, and master chip (1), which calls, sends the sub- journey of location information
Sequence parses the Beidou data of NMEA0183 format, is connect when Beidou data are effective by the information of network interface+serial ports (11) to the periphery
Enter equipment and send location data, wherein reference clock from crystal oscillator module (6) and passes through timer interruption processing when timing ga(u)ge
Function TIM_IRQHandler () is realized；
Step S3: the detecting of network module (13) link is waited to be timed to, the user information equipment send chain of master chip (1) to the periphery
Message is detected on road, is wherein realized when timing ga(u)ge by timer interruption processing subfunction TIM_IRQHandler (), reference clock
From crystal oscillator module (6), link detecting message is made of message header and link detecting data packet, and using udp protocol, setting is sent
Side sent a link every 5 minutes and detects message；
Step S4: user logs in access equipment, modification network parameter by web page, and master chip (1) continues to monitor network parameter
Whether change, if network parameter changes, disconnect current network connection, user again through new address access equipment,
User's Various types of data is maintained in eeprom memory (9), and power failure data is not lost；
Step S5: supporting user to pass through serial ports (11) input and output at any time, carries out location data transmission, positioning chip (2) work
Pattern configurations and network module (13) parameter configuration, by serial ports interrupt processing subfunction USART_IRQHandler () come real
It is existing.
3. a kind of Beidou positioning device based on network transmission according to claim 2, which is characterized in that in step S1
LWIP protocol realization process is as follows:
Far-end IP address remote ip, the mac of lwip agreement is arranged in lwip_comm_init () protocol initializing lwIP agreement
Address, the local address ip, mask subnet mask, gateway gateway, log in username user name, passwd password；
Lwip_periodic_handle () agreement kernel Timing Processing subfunction and lwip_pkt_ are persistently called in major cycle
Handle () agreement kernel received data packet processing subfunction guarantees that LWIP network inner continues working；
Subfunction httpd_init () is initialized by web page server function, configures web server net for this positioning device
Page server, the interior preservation webpage array of fsdata.* subfile are embedding by CGI common gateway interface means and SSI server end
Enter the interaction that means realize browser and server；
A new protocol control block UDP PCB is created by newly-built subfunction udp_new (), by connecting subfunction udp_
Connect () is connected to specified remote port, is tied to local address and port by binding subfunction udp_bind ()；
Data are sent out by sending subfunction udp_send (), data are received by call back function udp_recv ()；
If network parameter changes, UDP connection is disconnected by cutting subfunction udp_disconnect (), again through
Lwip_comm_init () protocol port initializes subfunction to initialize lwIP agreement.
4. a kind of Beidou positioning device based on network transmission according to claim 1, which is characterized in that master chip (1)
It is STM32 processing chip.
5. a kind of Beidou positioning device based on network transmission according to claim 1, which is characterized in that Beidou locating core
Piece (2) model UM220-III, master chip (1) pass through its USART3 serial ports and Beidou positioning chip UM220-III chip
The transmitting-receiving of USART1 serial ports intersects docking.
6. a kind of Beidou positioning device based on network transmission according to claim 2, which is characterized in that Beidou antenna
It (3) is passive antenna, Beidou positioning chip UM220 is connected directly using passive antenna with RF_IN pin.
7. a kind of Beidou positioning device based on network transmission according to claim 1, which is characterized in that Ethernet control
Device (4) model DM9000.
8. a kind of Beidou positioning device based on network transmission according to claim 1, which is characterized in that network transformer
(5) model PH163539.
9. a kind of Beidou positioning device based on network transmission according to claim 1, which is characterized in that memory (9)
Model AT24Cxx series EEPROM.
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| CN110825005A (en) * | 2019-12-03 | 2020-02-21 | 南京邮电大学 | STM32 and LWIP-based data acquisition system |
| CN113961977A (en) * | 2021-12-22 | 2022-01-21 | 中国电子科技集团公司第二十八研究所 | Non-centralized city information interaction system |
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