CN111770059A - System for realizing communication between adaptive serial port communication software and remote GPRS (general packet radio service) equipment - Google Patents
System for realizing communication between adaptive serial port communication software and remote GPRS (general packet radio service) equipment Download PDFInfo
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- CN111770059A CN111770059A CN202010485298.5A CN202010485298A CN111770059A CN 111770059 A CN111770059 A CN 111770059A CN 202010485298 A CN202010485298 A CN 202010485298A CN 111770059 A CN111770059 A CN 111770059A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L69/00—Network arrangements, protocols or services independent of the application payload and not provided for in the other groups of this subclass
- H04L69/22—Parsing or analysis of headers
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/14—Session management
- H04L67/141—Setup of application sessions
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L69/00—Network arrangements, protocols or services independent of the application payload and not provided for in the other groups of this subclass
- H04L69/08—Protocols for interworking; Protocol conversion
Abstract
The invention provides a method for realizing communication between adaptive serial port communication software and remote GPRS equipment, which comprises the following steps: the adapter includes: the system comprises a virtual serial port module, a serial port message transceiving module, a GPRS message transceiving module and a GPRS equipment maintenance module; the virtual serial port module is used for creating a virtual serial port, and the serial port communication tool and the adapter communicate through the matched virtual serial port to maintain a virtual serial port list; the serial port message transceiver module manages the transceiving of a plurality of virtual serial port data, receives Modbus messages sent by external serial port communication software, converts the Modbus messages into Modbus TCP format messages, receives the Modbus messages sent by the GPRS message transceiver module, and analyzes the messages; the GPRS message receiving and sending module is used for managing data receiving and sending of a plurality of GPRS devices, receiving Modbus messages sent by the serial port receiving and sending module, analyzing the messages, forwarding the messages to the corresponding GPRS devices, receiving Modbus TCP messages fed back by the GPRS devices and forwarding the Modbus TCP messages to the serial port message receiving and sending module; the GPRS equipment maintenance module is used for monitoring the online and offline of the GPRS equipment and maintaining an equipment list.
Description
Technical Field
The invention relates to the technical field of industrial automation, in particular to a system for realizing communication between adaptive serial port communication software and remote GPRS (general packet radio service) equipment.
Background
A Supervisory Control And Data Acquisition (SCADA) system has a long history And is of great significance in the field of industrial Control. The system can collect scattered unattended field data at regular time and can send simple control commands. It combines the advanced computer technology and communication technology into one body, and is suitable for various environments with wide regions. Building a dedicated wired or wireless network is an implementation of a conventional monitoring system, but this requires high construction and maintenance costs. With the rapid development of wireless communication technology, a communication mode with lower cost and higher speed is provided, that is, General Packet Radio Service (GPRS).
The continuous development and popularization of industrial automation intelligence enable many traditional industries to urgently need to monitor and debug remote equipment. For example, in special industries such as sewage treatment and petroleum and petrochemical industries, as field devices have the characteristics of large quantity and strong dispersibility, the GPRS module with industrial ethernet communication is rapidly and widely applied in the industries (as long as a mobile phone signal is available, data can be received and sent). The PLC is used as a control terminal, the system stability is high, real-time monitoring and tracking are carried out in a GPRS wireless communication mode, the system is not limited by conditions such as environment, places and the like, the system is simple to operate, data output is fast and accurate, continuous or real-time monitoring can be achieved, production debugging can be guided in real time, the application prospect is very wide, and the system has high practical value.
The GPRS modules (SIM cards are inserted in the GPRS communication modules to realize wireless transmission) are built in original CPUs of manufacturers, and the manufacturers remotely realize monitoring and debugging of field equipment through upper computer software. The upper computer software of each manufacturer integrates the communication function corresponding to each GPRS module, however, multiple devices can be arranged on one industrial field, and the non-uniformity of the upper computer software causes the limitation of field debugging.
Disclosure of Invention
The object of the present invention is to solve at least one of the technical drawbacks mentioned.
Therefore, the invention aims to provide a system for realizing communication between adaptive serial port communication software and remote GPRS equipment.
In order to achieve the above object, an embodiment of the present invention provides an implementation system for adapting communication between serial port communication software and a remote GPRS device, including:
the system comprises a serial port debugging tool, an adapter and a GPRS (general packet radio service) device group, wherein the serial port debugging tool is in two-way communication with the adapter, and the adapter is in two-way communication with the GPRS device group;
the adapter includes: the system comprises a virtual serial port module, a serial port message transceiving module, a GPRS message transceiving module and a GPRS equipment maintenance module, wherein the virtual serial port module is connected with the serial port message transceiving module, the GPRS equipment maintenance module is connected with the GPRS message transceiving module, and the serial port message transceiving module is connected with the GPRS message transceiving module;
the virtual serial port module is used for creating a virtual serial port, communicating with the adapter through the matched virtual serial port by using a serial port communication tool, and maintaining a virtual serial port list;
the serial port message transceiver module is used for managing data transceiving of a plurality of virtual serial ports, receiving Modbus messages sent by external serial port communication software, converting the Modbus messages into Modbus TCP format messages, forwarding the Modbus messages to the GPRS message transceiver module, receiving the Modbus messages sent by the GPRS message transceiver module, analyzing the messages and forwarding the messages to corresponding serial ports;
the GPRS message receiving and sending module is used for managing data receiving and sending of a plurality of GPRS devices, receiving Modbus TCP messages sent by the serial port receiving and sending module, analyzing the messages, forwarding the messages to the corresponding GPRS devices, receiving Modbus TCP messages fed back by the GPRS devices, converting the Modbus TCP messages into Modbus messages, and forwarding the Modbus messages to the serial port message receiving and sending module;
the GPRS equipment maintenance module is used for monitoring the online of GPRS equipment and maintaining an equipment list.
Further, the GPRS device maintenance module monitors the device to be on-line: when the equipment actively establishes connection, the GPRS equipment maintenance module analyzes the legality of the registration message according to the agreed message format, if the equipment pointer is added to the equipment list, and if the equipment pointer is illegal, the monitoring is continued.
Further, the GPRS device maintenance module is used for monitoring the device offline, judging the device according to the heartbeat packet setting time, if the device is overtime, the device is considered to be offline, and deleting the device from the device list, otherwise, the monitoring is continued.
Further, the serial port message transceiver module is used for receiving a Modbus message from serial port communication software, analyzing the legality of the message, converting the message into a Modbus TCP message if the message is legal, and sending the Modbus TCP message to the GPRS message transceiver module; and the serial port message receiving and sending module further receives the Modbus message fed back by the GPRS message receiving and sending module, analyzes the message and judges the legality of the message, if the message is legal, a corresponding serial port is searched according to the serial port number identified in the message, if the message is found to be sent, and if the message is not found to be sent, the message is discarded.
Further, on one hand, the GPRS message receiving and sending module receives a Modbus TCP message sent by the serial port receiving and sending module, analyzes the message, finds the corresponding GPRS equipment according to the DTU ID and sends the message, and if the message is not found, continues receiving; and on the other hand, receiving a Modbus TCP message fed back from the GPRS equipment, analyzing the legality of the message according to a standard Modbus TCP protocol, finding the corresponding serial port equipment according to the serial port number in the message if the message is legally converted into the standard Modbus format message, forwarding the message to the serial port message transceiver module if the message is found, and discarding the message if the message is not found.
The system for realizing the communication between the adaptive serial port communication software and the remote GPRS equipment, provided by the embodiment of the invention, has the following advantages: the adapter is independent of serial communication software and GPRS equipment; the serial communication software has no special requirements, and only needs to support serial communication; no additional hardware investment is needed; the conversion protocol is not limited to Modbus and Modbus/TCP protocol, but also comprises a custom protocol.
The invention can realize a simple method for interconnecting and intercommunicating with GPRS equipment, and simultaneously, communication resources are optimized and managed, thereby avoiding the investment on hardware as much as possible. The invention provides a method for adapting communication between serial communication software and GPRS equipment. By designing and realizing the adapter, the transparent data transmission between the serial port communication software and the GPRS equipment is realized by adopting a custom or general transmission protocol (such as a Modbus protocol) on the premise of not increasing the hardware cost.
The invention can realize the adapter, and the serial port communication software can easily realize the functions of communication with a plurality of on-site GPRS modules, monitoring, debugging, configuration and the like. The limitation that configuration software of multiple manufacturers cannot be communicated is overcome. The GPRS can be used only in places where the mobile phone card has signals without a special wired or wireless network, so that the GPRS facilitates industrial field debugging personnel, and provides convenience for production debugging work in scattered remote stations and in severe industrial production environments on the field. The protocol of the communication between the serial port communication software and the GPRS equipment can be a standard modbus protocol or any self-defined protocol.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
fig. 1 is an architecture diagram of an implementation system for adapting serial communication software to communicate with a remote GPRS device according to an embodiment of the present invention;
FIG. 2 is an architectural diagram of an adapter in accordance with an embodiment of the present invention;
fig. 3 is a flowchart of the operation of a GPRS device maintenance module according to an embodiment of the present invention;
FIG. 4 is a flowchart illustrating operation of a serial port message transceiver module according to an embodiment of the present invention;
fig. 5 is a flowchart of the operation of the GPRS messaging module according to an embodiment of the present invention.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.
As shown in fig. 1, the system for implementing communication between adaptive serial communication software and a remote GPRS device according to the embodiment of the present invention includes: the device comprises a serial port debugging tool 1, an adapter 2 and a GPRS (general packet radio service) equipment group 3.
In the embodiment of the present invention, the serial port communication software used by the serial port debugging tool 1 may be any serial port communication software as long as the serial port debugging function can be satisfied. For example, the serial port debugging tool 1 may employ: O-ComTool, SerialPort and SSCOM. The adapter 2 is used for realizing interconnection and intercommunication between serial port communication software and GPRS equipment. The GPRS device group 3 comprises a series of CPUs with built-in GPRS modules.
Specifically, the serial port debugging tool 1 is in bidirectional communication with the adapter 2, and the adapter 2 is in bidirectional communication with the GPRS device group 3.
As shown in fig. 2, the adapter 2 includes: the system comprises a virtual serial port module 21, a serial port message transceiving module 22, a GPRS message transceiving module 24 and a GPRS device maintenance module 23, wherein the virtual serial port module 21 is connected with the serial port message transceiving module 22, the GPRS device maintenance module 23 is connected with the GPRS message transceiving module 24, and the serial port message transceiving module 22 is connected with the GPRS message transceiving module 24. The main functions of the modules will be described below by taking the Modbus protocol as an example.
The virtual serial port module 21 is used for creating a virtual serial port, and the serial port communication tool and the adapter 2 communicate through the paired virtual serial ports to maintain a virtual serial port list.
As shown in fig. 4, the serial port message transceiver module 22 is configured to manage data transceiving of a plurality of virtual serial ports, receive a Modbus message sent by external serial port communication software, convert the Modbus message into a Modbus TCP format message, forward the Modbus message to the GPRS message transceiver module 24, receive the Modbus message sent by the GPRS message transceiver module 24, analyze the message, and forward the Modbus message to a corresponding serial port.
Specifically, the serial port message transceiver module 22 is configured to receive a Modbus message from the serial port communication software, analyze validity of the message according to a standard Modbus protocol, convert the message into a Modbus TCP message according to a standard Modbus TCP protocol if the message is legal, and send the Modbus TCP message to the GPRS message transceiver module 24. And the serial port message transceiver module 22 further receives the Modbus message fed back by the GPRS message transceiver module 24, analyzes the message and judges the validity according to the standard Modbus protocol, if the message is legal, searches for a corresponding serial port according to the serial port number identified in the message, if the message is found, the message is sent, and if the message is not found, the message is discarded.
As shown in fig. 5, the GPRS message transceiver module 24 is configured to manage data transceiving of a plurality of GPRS devices, receive a Modbus TCP message sent by the serial port transceiver module, parse the message, forward the message to a corresponding GPRS device, receive a Modbus TCP message fed back by the GPRS device, convert the Modbus TCP message into a Modbus message, and forward the Modbus message to the serial port message transceiver module 22.
Specifically, on one hand, the GPRS message transceiver module 24 receives a Modbus TCP message sent from the serial port transceiver module, analyzes the message, finds a corresponding GPRS device according to the DTU ID, and sends the message, if no, continues receiving; on the other hand, the Modbus TCP message fed back from the GPRS equipment is received, the message legality is analyzed according to the standard Modbus TCP protocol, if the message is legally converted into the standard Modbus format message, the corresponding serial port equipment is found according to the serial port number in the message, if the message is found, the message is forwarded to the serial port message transceiver module 22, and if the message is not found, the message is discarded.
As shown in fig. 3, the GPRS device maintenance module 23 is configured to monitor an on/off line of a GPRS device and maintain a device list. It should be noted that the device addresses under the same serial port cannot be repeated.
1. The GPRS device maintenance module 23 is configured to monitor an online status of the GPRS device and maintain a device list.
In the embodiment of the present invention, the GPRS device maintenance module 23 monitors the device going online: when a device actively establishes connection, the GPRS device maintenance module 23 analyzes the validity of the registration message, if the device pointer is added to the device list, and if the device pointer is illegal, the monitoring is continued.
2. The GPRS device maintenance module 23 is configured to monitor that the device is offline, determine the device according to the time set by the heartbeat packet, determine that the device is offline when the time is out, delete the device from the device list, and otherwise continue monitoring.
The communication protocol of the system for realizing communication between the adaptive serial port communication software and the remote GPRS equipment comprises but is not limited to Modbus and Modbus/TCP.
The system for realizing the communication between the adaptive serial port communication software and the remote GPRS equipment, provided by the embodiment of the invention, has the following advantages: the adapter is independent of serial communication software and GPRS equipment; the serial communication software has no special requirements, and only needs to support serial communication; no additional hardware investment is needed; the conversion protocol is not limited to Modbus and Modbus/TCP protocol, but also comprises a custom protocol.
The invention can realize a simple method for interconnecting and intercommunicating with GPRS equipment, and simultaneously, communication resources are optimized and managed, thereby avoiding the investment on hardware as much as possible. The invention provides a method for adapting communication between serial communication software and GPRS equipment. By designing and realizing the adapter, the transparent data transmission between the serial port communication software and the GPRS equipment is realized by adopting a custom or general transmission protocol (such as a Modbus protocol) on the premise of not increasing the hardware cost.
The invention can realize the adapter, and the serial port communication software can easily realize the functions of communication with a plurality of on-site GPRS modules, monitoring, debugging, configuration and the like. The limitation that configuration software of multiple manufacturers cannot be communicated is overcome. The GPRS can be used only in places where the mobile phone card has signals without a special wired or wireless network, so that the GPRS facilitates industrial field debugging personnel, and provides convenience for production debugging work in scattered remote stations and in severe industrial production environments on the field. The protocol of the communication between the serial port communication software and the GPRS equipment can be a standard modbus protocol or any self-defined protocol.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made in the above embodiments by those of ordinary skill in the art without departing from the principle and spirit of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (5)
1. A realization system for adapting the communication between serial port communication software and remote GPRS equipment is characterized by comprising: the system comprises a serial port debugging tool, an adapter and a GPRS (general packet radio service) device group, wherein the serial port debugging tool is in two-way communication with the adapter, and the adapter is in two-way communication with the GPRS device group;
the adapter includes: the system comprises a virtual serial port module, a serial port message transceiving module, a GPRS message transceiving module and a GPRS equipment maintenance module, wherein the virtual serial port module is connected with the serial port message transceiving module, the GPRS equipment maintenance module is connected with the GPRS message transceiving module, and the serial port message transceiving module is connected with the GPRS message transceiving module;
the virtual serial port module is used for creating a virtual serial port, and the serial port communication tool and the adapter communicate through the matched virtual serial port to maintain a virtual serial port list;
the serial port message transceiver module is used for managing data transceiving of a plurality of virtual serial ports, receiving Modbus messages sent by external serial port communication software, converting the Modbus messages into Modbus TCP format messages, forwarding the Modbus messages to the GPRS message transceiver module, receiving the Modbus messages sent by the GPRS message transceiver module, analyzing the messages and forwarding the messages to corresponding serial ports;
the GPRS message receiving and sending module is used for managing data receiving and sending of a plurality of GPRS devices, receiving Modbus TCP messages sent by the serial port receiving and sending module, analyzing the messages, forwarding the messages to the corresponding GPRS devices, receiving Modbus TCP messages fed back by the GPRS devices, converting the Modbus TCP messages into Modbus messages, and forwarding the Modbus messages to the serial port message receiving and sending module;
the GPRS equipment maintenance module is used for monitoring the online/offline of GPRS equipment and maintaining an equipment list.
2. The system for implementing communication between adaptive serial communication software and a remote GPRS device according to claim 1, wherein the GPRS device maintenance module monitors the device going online: when the equipment actively establishes connection, the GPRS equipment maintenance module analyzes the legality of the registration message, if the equipment pointer is added to the equipment list, and if the equipment pointer is illegal, the monitoring is continued.
3. The system of claim 1, wherein the GPRS device maintenance module is configured to monitor a device offline, determine the device based on a heartbeat packet setup time, determine that the device is offline when the time is out, delete the device from the device list, and otherwise continue monitoring.
4. The system for implementing communication between adaptive serial communication software and remote GPRS equipment according to claim 1, wherein the serial message transceiver module is configured to receive a Modbus message from the serial communication software, parse the validity of the message according to a standard Modbus protocol, convert the message into a Modbus TCP message according to a standard Modbus TCP protocol if the message is legal, and send the Modbus TCP message to the GPRS message transceiver module; and the serial port message transceiver module further receives the Modbus message fed back by the GPRS message transceiver module, analyzes the message and judges the legality of the message according to a standard Modbus protocol, if the message is legal, a corresponding serial port is searched according to the serial port number identified in the message, and if the message is found to be sent, the message is discarded.
5. The system of claim 1, wherein the GPRS message transceiver module receives a Modbus TCP message from the serial transceiver module, parses the message, finds a corresponding GPRS device according to the DTU ID, and sends the message, if no receiving is found, continues to receive the message; and on the other hand, receiving a Modbus TCP message fed back from the GPRS equipment, analyzing the legality of the message according to a standard Modbus TCP protocol, finding the corresponding serial port equipment according to the serial port number in the message if the message is legally converted into the standard Modbus format message, forwarding the message to the serial port message transceiver module if the message is found, and discarding the message if the message is not found.
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Application publication date: 20201013 |