CN109660454A - A kind of intelligence transparent transmission communication equipment and its implementation - Google Patents
A kind of intelligence transparent transmission communication equipment and its implementation Download PDFInfo
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- CN109660454A CN109660454A CN201811465215.5A CN201811465215A CN109660454A CN 109660454 A CN109660454 A CN 109660454A CN 201811465215 A CN201811465215 A CN 201811465215A CN 109660454 A CN109660454 A CN 109660454A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/66—Arrangements for connecting between networks having differing types of switching systems, e.g. gateways
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
- H04L12/40—Bus networks
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
- H04L12/40—Bus networks
- H04L2012/40208—Bus networks characterized by the use of a particular bus standard
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Abstract
The invention discloses a kind of intelligent transparent transmission communication equipment and its implementation.The equipment includes the ARM single-chip microcontroller of model STM32-F407, and the debugging interface circuit, power circuit, communication interface circuit, gsm module, LTE module and the TETRA module that connect with ARM single-chip microcontroller；The communication interface circuit is divided into Uartl communication interface circuit, CAN communication interface circuit and Ethernet communication interface circuit；The equipment receives the message from master control by communication interface, carries out the dissection process of messaging protocol, judges type of message, according to different type of messages, makes different responses, and response message is transmitted to main control device.The present invention provides modular interfaces, reduce the R&D cycle of product, portable relatively high, can satisfy various product, reduce the exploitation maintenance period of product.
Description
Technical field
The present invention relates to applied to one kind under communication equipment more particularly to multimode modular in railway, subway
Intelligent transparent transmission communication equipment and its implementation.
Background technique
With the fast development of metro industry, many communication modules all externally provide the communication interface of standard, this is for master
The MCU of control has higher interface requirement, once module increases, interface this may result in scarcity, cause the selection of main control MCU by
Limitation, so that the resource-consuming problem of the MCU of master control is increased, to increase work coordination problem between modules.Needle
To the product that main control device is separated with host equipment, main control device is responsible for control module, but due to distance and communication module
Increase, so that resource spent by main control device is increased, main control device development difficulty increases.
Summary of the invention
The problem of in view of state of the art and proposing, the present invention provide a kind of intelligent transparent transmission communication equipment and its realization
Method.Transparent transmission communication equipment primarily directed to carry communication module and design, adapter unit have serial line interface abundant, thoroughly
Facsimile communication equipment externally provides the communication interface of standard, and transparent transmission communication equipment is reserved module selection in hardware design and opened
It closing, transparent transmission communication equipment assesses how itself works by detecting, for the different control flow of different module designs,
What is connect completes the control to module for master control.Need to design a set of reliable hardware between main control device and transparent transmission communication equipment
Telecommunication circuit.
The technical solution adopted by the present invention is that: a kind of intelligence transparent transmission communication equipment, which is characterized in that the equipment includes type
Number it is the ARM single-chip microcontroller U2 of STM32-F407, and the debugging interface circuit that connect with ARM single-chip microcontroller, power circuit, communication connect
Mouth circuit, gsm module, LTE module and TETRA module；The communication interface circuit is divided into Uart1 communication interface circuit, CAN
Communication interface circuit and Ethernet communication interface circuit.
The power circuit uses model ASM1117 DC voltage-stabilizing chip U1, and 3 feet of DC voltage-stabilizing chip U1 connect
One end of capacitor C4, the anode of electrolytic capacitor C1, diode D1 anode, 5V DC power supply is provided by outside, then by opening
Close 1 end of S1 combination hub XS1；The cathode of diode D1 passes through 2 ends of resistance R1 combination hub XS1, and negative with electrolytic capacitor C1
Pole, the other end of capacitor C4, DC voltage-stabilizing chip U1 1 foot connection after be grounded；2 feet of DC voltage-stabilizing chip U1 and the connection of 4 feet
Afterwards, and the anode of electrolytic capacitor C2 and one end of capacitor C3 are connected, 3.3V direct current required for ARM single-chip microcontroller is exported after connection
Pressure；The cathode of electrolytic capacitor C2 is grounded after connecting with the other end of capacitor C3.
The debugging interface circuit uses crystal oscillator XTAL, and 13 feet and 12 feet of the ARM single-chip microcontroller U2 are separately connected
The both ends of crystal oscillator XTAL, and 94 feet of ARM single-chip microcontroller U2 are connected to by capacitor C13, capacitor C14 respectively, it is grounded after connection；
49 feet and 73 feet of ARM single-chip microcontroller U2 pass through capacitor C11 respectively, capacitor C12 is connected to 20 feet of ARM single-chip microcontroller, 99 feet, 74
Foot, 27 feet, 10 feet, are grounded after connection；21 feet, 22 feet, 11 feet, 19 feet, 28 feet, 50 feet, 75 feet, 100 feet of ARM single-chip microcontroller U2
After connection, one end of connection capacitor C5, capacitor C6, capacitor C7, capacitor C8, capacitor C9, capacitor C5, capacitor C6, capacitor C7, capacitor
C8, capacitor C9 the other end connection after be grounded；1 foot of socket XS2 and the connection of 2 feet are followed by 3.3V DC voltage；3 feet, 5 feet, 7
Foot, 9 feet, 13 feet, 15 feet are separately connected one end of resistance R3, resistance R4, resistance R5, resistance R8, resistance R7 and resistance R6, then
It is connected respectively to 90 feet, 77 feet, 72 feet, 76 feet, 89 feet, 14 feet of ARM single-chip microcontroller U2；Resistance R3, resistance R4 and resistance R5's
Other end connection is followed by 3.3V DC voltage；The connection of the other end of resistance R7 and resistance R6 is followed by 3.3V DC voltage；Socket XS2
17 feet, 19 feet pass through resistance R9 respectively, resistance R10 is grounded after connecting with the other end of resistance R8；4 feet of socket XS2,6 feet,
It is grounded after 8 feet, 10 feet, 12 feet, 14 feet, 16 feet, 18 feet, the connection of 20 feet.
The communication interface circuit is divided into Uartl communication interface circuit, CAN communication interface circuit and Ethernet communication
Interface circuit, wherein Ethernet communication interface circuit uses model LAN8720A Ethernet driving chip U4 and model
12 feet, 13 feet, 17 feet, 18 feet, 16 feet, 8 feet, 7 feet, 11 feet, 14 feet of HR911105A socket XS3, Ethernet driving chip U4
25 feet, 16 feet, 51 feet, 52 feet, 48 feet, 33 feet, 34 feet, 32 feet, 84 feet of the ARM single-chip microcontroller U2 are connected respectively to, with
Too 15 pins of net driving chip U4 14 pins that are connected to ARM single-chip microcontroller U2；24 feet of Ethernet driving chip U4 pass through electricity
Hinder R15 ground connection；21 feet, 20 feet, 23 feet, 22 feet, 3 feet, 2 feet of Ethernet driving chip U4 are connected respectively to the 1 of socket XS3
Foot, 2 feet, 3 feet, 6 feet, 12 feet, 10 feet；19 feet, 1 foot, 9 feet, 6 feet, 3 feet, 2 feet of Ethernet driving chip U4 pass through electricity respectively
Hold C15, capacitor C16, capacitor C17, capacitor C18 to be grounded after connecting with 25 feet of Ethernet driving chip U4；Ethernet drives core
5 feet of piece U4 are connected to 24 feet of ARM single-chip microcontroller U2；1 foot, 2 feet, 3 feet, 6 feet of socket XS3 pass through resistance R11, resistance respectively
R12, resistance R13, resistance R14 connect 3.3V voltage；It is connect by capacitor C19 with 8 feet after 4 feet of socket XS3 and the connection of 5 feet, even
It is grounded after connecing；11 feet of socket XS3 are grounded.
The CAN communication interface circuit uses the CAN chip U6's and model TJA1050 of model MCP2251D
CAN chip U7, wherein 1 foot of CAN chip U6 and 4 feet are connected respectively to 92 feet, 91 feet of the ARM single-chip microcontroller U2, and 3 feet connect
3.3V voltage, 2 feet ground connection, 8 feet are grounded by resistance R16, and 7 feet and 6 feet are separately connected the both ends of resistance R17, are then connect respectively
To 2 ends and 3 ends of connector J1；1 foot and 4 feet of the CAN chip U7 are connected respectively to 82 feet and 81 of ARM single-chip microcontroller U2
Foot, 3 feet connect 3.3V voltage, and 2 feet ground connection, 8 feet are grounded by resistance R18, and 7 feet and 6 feet are separately connected the both ends of resistance R19, so
It is coupled with 2 ends and 3 ends of connector J2 afterwards.
The Uartl communication interface circuit uses model MAX485 electrical level transferring chip U11, electrical level transferring chip
1 foot of U11 is connected to 69 feet of the ARM single-chip microcontroller U2, and 4 feet are connected to 68 feet of ARM single-chip microcontroller U2, after 3 feet and 4 feet connect
54 feet of ARM single-chip microcontroller U2 are connected to, 8 feet connect 5V power supply, and 5 feet are grounded, and connect respectively behind the both ends of 7 feet and 6 feet connection resistance R22
The both ends of connector XS7 are connected to, then 7 feet are grounded by resistance R21, and 6 feet connect 5V power supply by resistance R23.
Gsm module, LTE module and the TETRA module uses MAX232 serial port chip U9,2 feet of serial port chip U9
The shunt-wound capacitance C22 between 16 feet, and 16 feet connect 3.3V voltage, capacitor C20, capacitor C21 parallel connection one end be connected to
3.3V voltage, the other end are directly grounded；15 feet are directly grounded；13 feet, 11 feet, 10 feet, 8 feet of serial port chip U9 are connected respectively to
87 feet, 86 feet, 47 feet, 48 feet of the ARM single-chip microcontroller U2；1 foot and 3 feet are separately connected the both ends of capacitor C23,4 feet and 5 feet point
Not Lian Jie capacitor C24 both ends, 6 feet are grounded by capacitor C25；14 feet, 12 feet, 9 feet, 7 feet of serial port chip U9 are separately connected
To 3 feet of TETRA socket XS5,2 feet of 2 feet and GSM socket XS4,3 feet；1 foot of TETRA socket XS5 connects 3.3V voltage, 4 feet
It is grounded after being connected with 5 feet；1 foot of GSM socket XS4 connects 3.3V voltage, is grounded after 4 feet and the connection of 5 feet；The 2 of LTE socket XS6
Foot, 3 feet are connected respectively to 24 feet of ARM single-chip microcontroller U2,78 feet, and 1 foot connects 3.3V voltage, is grounded after 4 feet and the connection of 5 feet.
A kind of intelligent transparent transmission communication equipment implementation method of the present invention, which is characterized in that the transparent transmission communication
Equipment receives the message from main control device by communication interface, carries out the dissection process of message, judges type of message, according to not
Same type of message, makes different disposal, if it is the control message of module, message is directly given to corresponding module place to go
Reason answers until module receives instruction and makes, the response message of module is carried out packing processing, is given to master control by communication interface
Battery limits processing；If type of message is the machine message, directly processing, which is made answering, is given to main control device；If in module active
The message or detection message of report, directly carry out the packing of agreement, are given to main control device by communication interface and are handled.
Reception master control Message Processing process of the present invention executes following operation: carrying out at message parsing to master control message
Reason first determines whether reception type of message, if belonging to the machine message, transparent transmission communication equipment is directly handled, and is assisted subsequently into being packaged
Data step is discussed, and by communications interface transmission to main control device；If it is module message, then parse in main control device message
Hold, is which module be directed to by judgement in the message of parsing, message is transmitted to corresponding module, and module is waited to respond, if
Module has response message, and message is directly packaged into protocol data, is transferred to main control device by communication module；If module exists
It receives message to fail to respond to later, and time-out, then enters timeout treatment, timeout treatment result is packaged into protocol data, lead to
Communications interface transmission is crossed to main control device, terminates to receive the Message Processing process that main control device sends over.
Receiving module Message Processing process of the present invention executes following operation: receiving module message disappears to module
Breath carries out packing processing, then exports message to main control device, waits and judge whether to receive replying message for master control, such as
Fruit receives replying message for master control, then replies message and handle to main control device, then terminates entire process flow；If
It is not received by replying message for master control, then judges whether time-out, if not having time-out, waits and judges whether that receiving master control sets
Then standby message back step terminates entire process flow if it times out, inbound message waits timeout treatment.
Protocol interaction process of the present invention executes following operation: main control device sends AT instruction, is first packaged into first
Protocol data passes through communications interface transmission to transparent transmission communication equipment；Transparent transmission communication equipment receives data, docking by communication interface
The data of receipts are parsed, and according to the type and module identification in agreement, actual module control command is given to module；Mould
After block receives instruction, response can be provided, the message of response is added corresponding mark, is packaged into agreement number by transparent transmission communication equipment
According to by communications interface transmission to main control device, main control device analysis protocol, the real response message of processing module.
Communication module of the present invention reports information flow to execute following operation: the module that transparent transmission communication equipment is connected
Active reporting module information first adds the message flag of respective modules, is packaged into protocol data, passes through communication port transfers to master
Control equipment；Main control device receives and completes the parsing of agreement in communication interface, handles module message, and uploaded
The reply of message gives transparent transmission communication equipment by communications interface transmission, and transparent transmission communication interface receives message, and parses to message,
Then replying message for main control device is directly handled.
Detection information report flow of the present invention executes following operation: transparent transmission communication equipment timing is detected, often
Every regular time, transparent transmission communication equipment, which will add the message of detection, to be indicated, and is packaged into protocol data, passes through communication
Interface is transferred to main control device, and main control device carries out the parsing and Message Processing of agreement after receiving data, and gives
The response of message is detected, main control device is packaged test returns message, gives transparent transmission communication equipment by communications interface transmission, transparent transmission is logical
Letter equipment carries out the parsing of agreement after receiving message, and directly handles.
The present invention uses modular design, and it is logical to marry again transparent transmission for the communication module that original main control device is directly controlled
Believe in equipment, it is hard to be arrived this by the module design of hardware by transparent transmission communication equipment for the common communication module of current subway all compatibilities
Part, then software is combined according to the toggle switch that hardware is reserved come preliminary identification module, is completed by the differentiation of software to module
Control.After agreeing upon agreement between main control device and transparent transmission communication equipment, main control device need not be concerned about that transparent transmission communication is set
Standby is how to control communication module, and transparent transmission communication equipment itself handles protocol analysis, directly controls module.
Intelligent transparent transmission communication equipment is the bridge added between main control unit and control module, complicated communication ends
Mouth is converted to simple and reliable connection type.Save the hardware resource of main control device.Intelligent transparent transmission communication equipment provides reliable
Hardware communications circuit, make the communication between main control device and module relatively reliable.Intelligent transparent transmission communication equipment hardware itself
It is powerful, operating system can be added, provides the foundation for the multitask in later period, increases the real-time process performance of module.
The invention has the advantages that: modular interface is provided, the R&D cycle of product is reduced, it is intelligent
Transparent transmission communication equipment undertakes host and communicates with main control device.Main control device is only absorbed in research and development modules basic function, intelligence
The demand that the addition of change communication equipment can satisfy various product can mitigate master control by intelligent transparent transmission communication equipment and set
Standby burden, it is portable relatively high, reduce the maintenance period of product.
Detailed description of the invention
Fig. 1 is the hardware master-plan block diagram of transparent transmission communication equipment of the present invention；
Fig. 2 is power circuit principle figure in Fig. 1；
Fig. 3 is debugging interface circuit diagram in Fig. 1；
Fig. 4 is Ethernet communication interface circuit schematic diagram in Fig. 1；
Fig. 5 is CAN communication interface circuit schematic diagram in Fig. 1；
Fig. 6 is Uartl communication interface circuit schematic diagram in Fig. 1；
Fig. 7 is LTE, TETRA in Fig. 1, gsm module communication interface circuit schematic diagram；
Fig. 8 is transparent transmission communication equipment software overall process frame diagram of the present invention；
Fig. 9 is reception master control message processing flow-chart in Fig. 8；
Figure 10 is receiving module message processing flow-chart in Fig. 8；
Figure 11 is that protocol interaction process moves towards figure in Fig. 8；
Figure 12 is that communication module reports information flow to move towards figure in Fig. 8；
Figure 13 is that detection information report flow moves towards figure in Fig. 8.
Specific embodiment
Below in conjunction with attached drawing, the invention will be further described:
As shown in Figure 1, the equipment includes the ARM single-chip microcontroller of model STM32-F407, and the debugging connecting with ARM single-chip microcontroller
Interface circuit, power circuit, communication interface circuit, gsm module, LTE module and TETRA module；Communication interface circuit is divided into
Uartl(serial ports 1) communication interface circuit, CAN(controller local area network) communication interface circuit and Ethernet(Ethernet) it is logical
Believe interface circuit.
As shown in Fig. 2, power circuit uses model ASM1117 DC voltage-stabilizing chip U1,3 feet of DC voltage-stabilizing chip U1
Connect one end of capacitor C4, the anode of electrolytic capacitor C1, diode D1 anode, by outside provide 5V DC power supply, then lead to
Cross 1 end of switch S1 combination hub XS1；The cathode of diode D1 by 2 ends of resistance R1 combination hub XS1, and with electrolytic capacitor C1
Cathode, the other end of capacitor C4, DC voltage-stabilizing chip U1 the connection of 1 foot after be grounded；2 feet and 4 feet of DC voltage-stabilizing chip U1
After connection, and the anode of electrolytic capacitor C2 and one end of capacitor C3 are connected, it is straight that 3.3V required for ARM single-chip microcontroller is exported after connection
Galvanic electricity pressure；The cathode of electrolytic capacitor C2 is grounded after connecting with the other end of capacitor C3.
Outside provides 5V DC power supply, exports 3.3V direct current required for ARM single-chip microcontroller by DC-DC DC voltage-stabilizing chip
Voltage.Each group of IO of ARM single-chip microcontroller requires to provide reliable and stable 3.3V voltage, so using DC-DC DC voltage-stabilizing core
Piece.ASM1117 DC voltage-stabilizing chip reduces the ripple of electric power output voltage in input, output end all shunt capacitances.
As shown in figure 3, debugging interface circuit uses crystal oscillator XTAL, 13 feet and 12 feet of ARM single-chip microcontroller U2 are separately connected crystalline substance
The both ends of vibration XTAL, and 94 feet of ARM single-chip microcontroller U2 are connected to by capacitor C13, capacitor C14 respectively, it is grounded after connection；ARM
49 feet and 73 feet of single-chip microcontroller U2 pass through capacitor C11 respectively, capacitor C12 is connected to 20 feet of ARM single-chip microcontroller U2,99 feet, 74 feet,
27 feet, 10 feet, are grounded after connection；21 feet, 22 feet, 11 feet, 19 feet, 28 feet, 50 feet, 75 feet, 100 feet of ARM single-chip microcontroller U2 connect
After connecing, one end of connection capacitor C5, capacitor C6, capacitor C7, capacitor C8, capacitor C9, capacitor C5, capacitor C6, capacitor C7, capacitor
C8, capacitor C9 the other end connection after be grounded；1 foot of socket XS2 and the connection of 2 feet are followed by 3.3V DC voltage；3 feet, 5 feet, 7
Foot, 9 feet, 13 feet, 15 feet are separately connected one end of resistance R3, resistance R4, resistance R5, resistance R8, resistance R7 and resistance R6, then
It is connected respectively to 90 feet, 77 feet, 72 feet, 76 feet, 89 feet, 14 feet of ARM single-chip microcontroller U2；Resistance R3, resistance R4 and resistance R5's
Other end connection is followed by 3.3V DC voltage；The connection of the other end of resistance R7 and resistance R6 is followed by 3.3V DC voltage；Debugging connects
17 feet, 19 feet of mouth JTAG socket XS2 pass through resistance R9 respectively, resistance R10 is grounded after connecting with the other end of resistance R8；Debugging
4 feet, 6 feet, 8 feet, 10 feet, 12 feet, 14 feet, 16 feet, 18 feet, 20 feet of interface JTAG socket XS2 are grounded after connecting.
The crystal oscillator of access 12M outside ARM chip STM32-F407 provides reliable stabilization for the work of entire ARM single-chip microcontroller
Clock base.Chip itself carries JTAG debugging interface, can support in-circuit emulation, provides convenient and fast wind to developer
Part, ARM chip STM32-F407 itself need to provide 3.3V voltage and power ground, and in addition ARM chip STM32-F407 is
No normal work it is also required to provide effective resetting voltage.ARM chip STM32-F407 needs external crystal-controlled oscillation to provide clock, this is
The primary condition that whole system works normally, if clock is provided by internal RC oscillator, due to external rings without external crystal-controlled oscillation
Border is affected to this, therefore provides clock signal using reliable external crystal-controlled oscillation.Due to answering for ARM single-chip microcontroller STM32-F407
Position signal is low level, designs reset circuit by capacitor charge and discharge characteristic, can generate reset in the rigid power up of whole system
Signal, after capacitor is fully charged, reset signal becomes high level, and system can work normally.
As shown in figure 4, Ethernet communication interface circuit uses model LAN8720A Ethernet driving chip U4 and type
Number be HR911105A socket XS3,12 feet of Ethernet driving chip U4,13 feet, 17 feet, 18 feet, 16 feet, 8 feet, 7 feet, 11 feet,
14 feet are connected respectively to 25 feet, 16 feet, 51 feet, 52 feet, 48 feet, 33 feet, 34 feet, 32 feet, 84 feet of ARM single-chip microcontroller U2, ether
15 feet of net driving chip U4 are connected to 14 pins of ARM single-chip microcontroller U2；24 feet of Ethernet driving chip U4 pass through resistance R15
Ground connection；21 feet, 20 feet, 23 feet, 22 feet, 3 feet, 2 feet of Ethernet driving chip U4 be connected respectively to 1 foot of socket XS3,2 feet,
3 feet, 6 feet, 12 feet, 10 feet；19 feet, 1 foot, 9 feet, 6 feet, 3 feet, 2 feet of Ethernet driving chip U4 pass through respectively capacitor C15,
Capacitor C16, capacitor C17, capacitor C18 are grounded after connecting with 25 feet of Ethernet driving chip U4；The 5 of Ethernet driving chip U4
Foot is connected to 24 feet of ARM single-chip microcontroller U2；1 foot, 2 feet, 3 feet, 6 feet of socket XS3 pass through resistance R11, resistance R12, electricity respectively
Resistance R13, resistance R14 connect 3.3V voltage；It is connect by capacitor C19 with 8 feet after 4 feet of socket XS3 and the connection of 5 feet, connection is followed by
Ground；11 feet of socket XS3 are grounded.
ARM single-chip microcontroller STM32-F407 itself does not have PHY hardware capability, adds the driving of LAN8720A Ethernet by outside
Chip increases ethernet communication function.ARM single-chip microcontroller STM32-F407 chip is connect with LAN8720A chip by RMII interface,
Reduce the connecting line of hardware, software developer is also made to reduce development difficulty.ARM single-chip microcontroller only need by RMII interface with
The connection of LAN8720A chip, the work register of some inside is configured by RMII interface, so that it may realize the friendship of Ethernet
Mutual function.
As shown in figure 5, CAN communication interface circuit uses the CAN chip U6 and model TJA1050 of model MCP2251
CAN chip U7, wherein 1 foot of CAN chip U6 and 4 feet are connected respectively to 92 feet of ARM single-chip microcontroller U2,91 feet, and 3 feet meet 3.3V
Voltage, 2 feet ground connection, 8 feet are grounded by resistance R16, and 7 feet and 6 feet are separately connected the both ends of resistance R17, are then coupled with and are connect
2 ends and 3 ends of plug-in unit J1；1 foot and 4 feet of CAN chip U7 is connected respectively to 82 feet and 81 feet of ARM single-chip microcontroller U2, and 3 feet connect
3.3V voltage, 2 feet ground connection, 8 feet are grounded by resistance R18, and 7 feet and 6 feet are separately connected the both ends of resistance R19, are then connect respectively
To 2 ends and 3 ends of connector J2.
ARM single-chip microcontroller STM32-F407 itself wants practical application to communicate again with the interface function of CAN, needs additional logical
The level chip of letter can design here by two chip TJA1050 chip and MCP2251 chip and meet CAN communication
The hardware circuit of standard.The anti-interference ability of CAN transmission can be increased using TJA1050 chip and MCP2251 chip, increased
Add the transmission range to CAN bus.
As shown in fig. 6, Uartl communication interface circuit uses model MAX485 electrical level transferring chip U11, level conversion core
1 foot of piece U11 is connected to 69 feet of ARM single-chip microcontroller U2, and 4 feet are connected to 68 feet of ARM single-chip microcontroller U2, connect after 3 feet and the connection of 4 feet
54 feet of ARM single-chip microcontroller U2 are connected to, 8 feet connect 5V power supply, 5 feet ground connection, and 7 feet and 6 feet are separately connected behind the both ends of resistance R22 respectively
The both ends of connector XS7 are connected to, then 7 feet are grounded by resistance R21, and 6 feet connect 5V power supply by resistance R23.
ARM single-chip microcontroller STM32-F407 carries serial port function, but since chip serial ports level itself is TTL, is transmitting
It is limited in distance, passes through additional MAX485 electrical level transferring chip, thus it is possible to vary the communication distance of serial ports also improves simultaneously
Serial communication reliability.MAX485 chip interior is integrated with the combination of differential received and balance driver, enhances transmission process
In anti-interference ability, while also support multi-site transfer function, for the later period extend basis is provided.
As shown in fig. 7, gsm module, LTE module and TETRA module use MAX232 serial port chip U9, serial port chip U9's
Shunt-wound capacitance C22 between 2 feet and 16 feet, and 16 feet connect 3.3V voltage, and one end of C20, C21 parallel connection is connected to 3.3V electricity
Pressure, the other end are directly grounded；15 pins are directly grounded；13 feet, 11 feet, 10 feet, 8 feet of serial port chip U9 are connected respectively to described
87 feet, 86 feet, 47 feet, 48 feet of ARM single-chip microcontroller U2；1 foot and 3 feet are separately connected the both ends of capacitor C23, and 4 feet and 5 feet connect respectively
The both ends of capacitor C24 are connect, 6 feet are grounded by capacitor C25；14 feet, 12 feet, 9 feet, 7 feet of serial port chip U9 are connected respectively to
3 feet of TETRA socket XS5,2 feet of 2 feet and GSM socket XS4,3 feet；1 foot of ETRA socket XS5 connects 3.3V voltage, 4 feet and 5
It is grounded after foot connection；1 foot of GSM socket XS4 connects 3.3V voltage, is grounded after 4 feet and the connection of 5 feet；2 feet, 3 feet of LTE socket XS6
24 feet, 78 feet of ARM single-chip microcontroller U2 are connected respectively to, 1 foot connects 3.3V voltage, is grounded after 4 feet and the connection of 5 feet.
ARM single-chip microcontroller STM32-F407 itself carries the communication module of three types, is LTE, TETRA, GSM mould respectively
Block, all can be rapid by Software package module control protocol (AT agreement) using most common common control interface (serial ports)
Easily control communication module.
As shown in Fig. 8 to Figure 13, intelligent transmission equipment implementation method: transparent transmission communication equipment by communication interface reception come
From the message of main control device, the dissection process of message is carried out, judges type of message, according to different type of messages, makes difference
Message, if it is the control message of module, is directly given to corresponding module and goes to handle, made until module receives instruction by processing
It answers, the response message of module is carried out packing processing, the processing of main control device area is given to by communication interface；If type of message
For the machine message, directly processing, which is made answering, is given to main control device；If the message or detection message of module active reporting, directly
The packing for tapping into row agreement is given to main control device by communication interface and is handled.
As shown in figure 9, receiving master control Message Processing process executes following operation: being carried out at message parsing to master control message
Reason first determines whether reception type of message, if belonging to the machine message, transparent transmission communication equipment is directly handled, and is assisted subsequently into being packaged
Data step is discussed, and by communications interface transmission to main control device；If it is module message, then parse in main control device message
Hold, is for which module by judgement in the message of parsing.Message is transmitted to corresponding module, and module is waited to respond, if
Module has response message, and message is directly packaged into protocol data, is transferred to main control device by communication module.If module exists
It receives message to fail to respond to later, and time-out, then enters timeout treatment, timeout treatment result is packaged into protocol data, lead to
Communications interface transmission is crossed to main control device, terminates to receive the Message Processing process that main control device sends over.
Transparent transmission communication equipment receives the message from main control device by communication interface, at the parsing for carrying out messaging protocol
Reason, judges type of message, according to different type of messages, makes different responses, disappear in particular for different control modules
Breath is given to module by serial ports transmission, and the response message of module is given to main control device or the result of timeout treatment
It is given to main control device.
As shown in Figure 10, receiving module Message Processing process executes following operation: receiving module message, to the message of module
Packing processing is carried out, then goes out to be defeated by main control device by message, waits and judge whether to receive replying message for master control, if
Replying message for master control is received, then main control device is replied message and is handled, then terminates entire process flow；If not yet
Have and receive replying message for master control, then judge whether time-out, if not having time-out, waits and judge whether to receive main control device
Message back step, if it times out, inbound message wait timeout treatment, then terminate entire process flow.
The message of module active response, ARM single-chip microcontroller STM32-F407 carries out packing agreement to its message immediately, and passes through
Communications interface transmission does the judgement of next step by the message whether main control device replys to main control device.
As shown in figure 11, protocol interaction process executes following operation: main control device sends AT instruction, is first packaged into association first
Data are discussed, communications interface transmission to transparent transmission communication equipment is passed through；Transparent transmission communication equipment receives data by communication interface, to reception
Data parsed, according to the type and module identification in agreement, actual module control command is given to module；Module
After receiving instruction, response can be provided, the message of response is added corresponding mark, is packaged into agreement number by transparent transmission communication equipment
According to by communications interface transmission to main control device, main control device analysis protocol, the real response message of processing module.
As shown in figure 12, communication module reports information flow to execute following operation: the module that transmission equipment is connected, actively
Reporting module information first adds the message flag of respective modules, is packaged into protocol data, is set by communication port transfers to master control
It is standby；Main control device receives and completes the parsing of agreement in communication interface, handles module message, and carries out upload message
Reply, give transparent transmission communication equipment by communications interface transmission, transparent transmission communication interface receives message, and parses to message, then
Directly handle replying message for main control device.
As shown in figure 13, detection information report flow executes following operation: transparent transmission communication equipment timing detection (temperature, electricity
The information such as pressure), at every fixed time, transparent transmission communication equipment, which will add the message of detection, to be indicated, and is packaged into agreement
Data, by communications interface transmission to main control device；Main control device receives data and is carried out at the parsing and message of agreement later
Reason, and the response of detection message is given, main control device is packaged test returns message, logical to transparent transmission by communications interface transmission
Believe and carry out the parsing of agreement after equipment, transparent transmission communication equipment receive message, and directly handles.
Transparent transmission communication equipment is exactly that the interface that main control device provides is moved down, and main control device, which only needs one, to be led to transparent transmission
Believe the port of equipment communication, mode can diversified (Uart, Can, Ethernet), save the resource of main control unit.Thoroughly
Facsimile communication equipment is mainly responsible for receiving main control device instruction, by controlling corresponding communication module, main control device after conversion
It is connected with transparent transmission communication equipment by mature control interface, it is each to connect that transparent transmission communication equipment provides serial line interface abundant
A communication module guarantees the reliable of communication.Due to the diversification of module, the module that transparent transmission communication equipment can be different with carry is main
Control equipment only needs to send control protocol, so that it may control multiple module, and in the design of product, the two can also be placed
In different places.Therefore, main control device and transparent transmission communication equipment are more independent, and transplantability is high.
Claims (7)
1. a kind of intelligence transparent transmission communication equipment, which is characterized in that the equipment includes the ARM single-chip microcontroller of model STM32-F407
U2, and connect with ARM single-chip microcontroller debugging interface circuit, power circuit, communication interface circuit, gsm module, LTE module and
TETRA module；It is logical that the communication interface circuit is divided into Uart1 communication interface circuit, CAN communication interface circuit and Ethernet
Believe interface circuit；
The power circuit uses model ASM1117 DC voltage-stabilizing chip U1, and 3 feet of DC voltage-stabilizing chip U1 connect capacitor
One end of C4, the anode of electrolytic capacitor C1, diode D1 anode, by outside provide 5V DC power supply, then pass through switch S1
1 end of combination hub XS1；The cathode of diode D1 by 2 ends of resistance R1 combination hub XS1, and with the cathode of electrolytic capacitor C1, electricity
It is grounded after holding the 1 foot connection of the other end, DC voltage-stabilizing chip U1 of C4；After 2 feet of DC voltage-stabilizing chip U1 and the connection of 4 feet, again
The anode of electrolytic capacitor C2 and one end of capacitor C3 are connected, 3.3V DC voltage required for ARM single-chip microcontroller is exported after connection；Electricity
The cathode of solution capacitor C2 is grounded after connecting with the other end of capacitor C3；
The debugging interface circuit uses crystal oscillator XTAL, and 13 feet and 12 feet of the ARM single-chip microcontroller U2 are separately connected crystal oscillator
The both ends of XTAL, and 94 feet of ARM single-chip microcontroller U2 are connected to by capacitor C13, capacitor C14 respectively, it is grounded after connection；ARM is mono-
49 feet and 73 feet of piece machine U2 pass through capacitor C11 respectively, capacitor C12 is connected to 20 feet, 99 feet, 74 feet, 27 of ARM single-chip microcontroller
Foot, 10 feet, are grounded after connection；21 feet of ARM single-chip microcontroller U2,22 feet, 11 feet, 19 feet, 28 feet, 50 feet, 75 feet, the connection of 100 feet
Afterwards, connect capacitor C5, capacitor C6, capacitor C7, capacitor C8, capacitor C9 one end, capacitor C5, capacitor C6, capacitor C7, capacitor C8,
It is grounded after the other end connection of capacitor C9；1 foot of socket XS2 and the connection of 2 feet are followed by 3.3V DC voltage；3 feet, 5 feet, 7 feet, 9
Foot, 13 feet, 15 feet are separately connected one end of resistance R3, resistance R4, resistance R5, resistance R8, resistance R7 and resistance R6, then distinguish
It is connected to 90 feet, 77 feet, 72 feet, 76 feet, 89 feet, 14 feet of ARM single-chip microcontroller U2；Resistance R3, resistance R4 and resistance R5's is another
End connection is followed by 3.3V DC voltage；The connection of the other end of resistance R7 and resistance R6 is followed by 3.3V DC voltage；The 17 of socket XS2
Foot, 19 feet pass through resistance R9 respectively, resistance R10 is grounded after connecting with the other end of resistance R8；4 feet of socket XS2,6 feet, 8 feet,
It is grounded after 10 feet, 12 feet, 14 feet, 16 feet, 18 feet, the connection of 20 feet；
The communication interface circuit is divided into Uartl communication interface circuit, CAN communication interface circuit and Ethernet communication interface
Circuit, wherein Ethernet communication interface circuit uses model LAN8720A Ethernet driving chip U4 and model
12 feet, 13 feet, 17 feet, 18 feet, 16 feet, 8 feet, 7 feet, 11 feet, 14 feet of HR911105A socket XS3, Ethernet driving chip U4
25 feet, 16 feet, 51 feet, 52 feet, 48 feet, 33 feet, 34 feet, 32 feet, 84 feet of the ARM single-chip microcontroller U2 are connected respectively to, with
Too 15 pins of net driving chip U4 14 pins that are connected to ARM single-chip microcontroller U2；24 feet of Ethernet driving chip U4 pass through electricity
Hinder R15 ground connection；21 feet, 20 feet, 23 feet, 22 feet, 3 feet, 2 feet of Ethernet driving chip U4 are connected respectively to the 1 of socket XS3
Foot, 2 feet, 3 feet, 6 feet, 12 feet, 10 feet；19 feet, 1 foot, 9 feet, 6 feet, 3 feet, 2 feet of Ethernet driving chip U4 pass through electricity respectively
Hold C15, capacitor C16, capacitor C17, capacitor C18 to be grounded after connecting with 25 feet of Ethernet driving chip U4；Ethernet drives core
5 feet of piece U4 are connected to 24 feet of ARM single-chip microcontroller U2；1 foot, 2 feet, 3 feet, 6 feet of socket XS3 pass through resistance R11, resistance respectively
R12, resistance R13, resistance R14 connect 3.3V voltage；It is connect by capacitor C19 with 8 feet after 4 feet of socket XS3 and the connection of 5 feet, even
It is grounded after connecing；11 feet of socket XS3 are grounded；
The CAN communication interface circuit uses the CAN core of the CAN chip U6 and model TJA1050 of model MCP2251D
Piece U7, wherein 1 foot of CAN chip U6 and 4 feet are connected respectively to 92 feet, 91 feet of the ARM single-chip microcontroller U2, and 3 feet connect 3.3V electricity
Pressure, 2 feet ground connection, 8 feet are grounded by resistance R16, and 7 feet and 6 feet are separately connected the both ends of resistance R17, are then coupled with and are patched
2 ends and 3 ends of part J1；1 foot and 4 feet of the CAN chip U7 are connected respectively to 82 feet and 81 feet of ARM single-chip microcontroller U2, and 3 feet connect
3.3V voltage, 2 feet ground connection, 8 feet are grounded by resistance R18, and 7 feet and 6 feet are separately connected the both ends of resistance R19, are then connect respectively
To 2 ends and 3 ends of connector J2；
The Uartl communication interface circuit use model MAX485 electrical level transferring chip U11, the 1 of electrical level transferring chip U11
Foot is connected to 69 feet of the ARM single-chip microcontroller U2, and 4 feet are connected to 68 feet of ARM single-chip microcontroller U2, are connected to after 3 feet and the connection of 4 feet
54 feet of ARM single-chip microcontroller U2,8 feet connect 5V power supply, and 5 feet are grounded, and are connected respectively to and connect behind the both ends of 7 feet and 6 feet connection resistance R22
The both ends of plug-in unit XS7, then 7 feet are grounded by resistance R21, and 6 feet connect 5V power supply by resistance R23；
Gsm module, LTE module and the TETRA module uses MAX232 serial port chip U9,2 feet of serial port chip U9 and 16
Shunt-wound capacitance C22 between foot, and 16 feet connect 3.3V voltage, capacitor C20, capacitor C21 parallel connection to be connected to 3.3V electric for one end
Pressure, the other end are directly grounded；15 feet are directly grounded；13 feet, 11 feet, 10 feet, 8 feet of serial port chip U9 are connected respectively to described
87 feet, 86 feet, 47 feet, 48 feet of ARM single-chip microcontroller U2；1 foot and 3 feet are separately connected the both ends of capacitor C23, and 4 feet and 5 feet connect respectively
The both ends of capacitor C24 are connect, 6 feet are grounded by capacitor C25；14 feet, 12 feet, 9 feet, 7 feet of serial port chip U9 are connected respectively to
3 feet of TETRA socket XS5,2 feet of 2 feet and GSM socket XS4,3 feet；1 foot of TETRA socket XS5 connects 3.3V voltage, 4 feet and 5
It is grounded after foot connection；1 foot of GSM socket XS4 connects 3.3V voltage, is grounded after 4 feet and the connection of 5 feet；2 feet of LTE socket XS6,3
Foot is connected respectively to 24 feet of ARM single-chip microcontroller U2,78 feet, and 1 foot connects 3.3V voltage, is grounded after 4 feet and the connection of 5 feet.
2. a kind of implementation method of intelligent transparent transmission communication equipment as described in claim 1, which is characterized in that the transparent transmission
Communication equipment receives the message from main control device by communication interface, carries out the dissection process of message, judges type of message, root
According to different type of messages, different disposal is made, if it is the control message of module, message is directly given to corresponding module
Processing answers until module receives instruction and makes, the response message of module is carried out packing processing, is given to master by communication interface
Control battery limits processing；If type of message is the machine message, directly processing, which is made answering, is given to main control device；If module is actively
The message or detection message reported, directly carries out the packing of agreement, is given to main control device by communication interface and is handled.
3. a kind of intelligent transparent transmission communication equipment implementation method according to claim 2, which is characterized in that receive master control and disappear
It ceases process flow and executes following operation: message dissection process is carried out to master control message, first determine whether to receive type of message, if belonged to
In the machine message, transparent transmission communication equipment is directly handled, and subsequently into packing protocol data step, and is given by communications interface transmission
Main control device；If it is module message, then main control device message content is parsed, is for which mould by judgement in the message of parsing
Message is transmitted to corresponding module, and module is waited to respond by block, if module has response message, message is directly packaged into association
Data are discussed, main control device is transferred to by communication module；If module fails to respond to after receiving message, and time-out, then
Into timeout treatment, timeout treatment result is packaged into protocol data, by communications interface transmission to main control device, terminates to receive
The Message Processing process that main control device sends over.
4. a kind of intelligent transparent transmission communication equipment implementation method according to claim 2, which is characterized in that receiving module disappears
Cease process flow and execute following operation: receiving module message carries out packing processing to the message of module, then by message export to
Main control device waits and judges whether to receive replying message for master control, if replying message for master control is received, to master control
Device replied message is handled, and entire process flow is then terminated；If being not received by replying message for master control, judge
It is whether overtime, if not having time-out, wait and judge whether to receive the message back step of main control device, if it times out, into
Enter Messages-Waiting timeout treatment, then terminates entire process flow.
5. a kind of intelligent transparent transmission communication equipment implementation method according to claim 2, which is characterized in that protocol interaction stream
Cheng Zhihang or less is operated: main control device sends AT instruction, is first packaged into protocol data first, passes through communications interface transmission to transparent transmission
Communication equipment；Transparent transmission communication equipment receives data by communication interface, parses to received data, according to the class in agreement
Actual module control command is given to module by type and module identification；After module receives instruction, response, transparent transmission can be provided
The message of response is added corresponding mark by communication equipment, is packaged into protocol data, by communications interface transmission to main control device,
Main control device analysis protocol, the real response message of processing module.
6. a kind of intelligent transparent transmission communication equipment implementation method according to claim 2, which is characterized in that in communication module
It reports information flow to execute following operation: the module active reporting module information that transparent transmission communication equipment is connected, first adds corresponding mould
The message flag of block, is packaged into protocol data, passes through communication port transfers to main control device；Main control device is received in communication interface
And the parsing of agreement is completed, module message is handled, and carry out the reply of upload message, is given by communications interface transmission
Transparent transmission communication equipment, transparent transmission communication interface receives message, and parses to message, and then the reply of directly processing main control device disappears
Breath.
7. a kind of intelligent transparent transmission communication equipment implementation method according to claim 2, which is characterized in that in detection information
Report process executes following operation: transparent transmission communication equipment timing is detected, and at every fixed time, transparent transmission communication equipment will be
The message of detection adds mark, and is packaged into protocol data, and by communications interface transmission to main control device, main control device is received
The parsing and Message Processing of agreement are carried out after to data, and gives the response of detection message, and main control device is packaged detection
It replies message, carries out agreement after giving transparent transmission communication equipment, transparent transmission communication equipment to receive message by communications interface transmission
Parsing, and directly handle.
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