Remote wireless transmission management system for industrial field real-time data

Abstract

The invention belongs to the field of wireless transmission systems, and particularly relates to a remote wireless transmission management system for industrial field real-time data, which comprises a master node, slave nodes, monitoring nodes and a transmission protocol, the transmission protocol comprises a network management message, a TPDO message, an RPDO message, a slave burst message, an SDO message, a block transmission message, a special message and a standby message; the master node is a network center node responsible for network management, the slave node is any one of a data acquisition node and a control node, the monitoring node is any one of a data monitoring node and a data display node, and the whole scene is covered by multiple types of messages. Various requirements of data acquisition, control instructions, equipment configuration, firmware upgrading and the like are met, the protocol is more comprehensive than a traditional protocol, the special message and the standby message provide compatibility for subsequent function extension, and the diversified requirements of future industrial scenes are effectively met.

Description

Technical Field

[0001] The present invention relates to the field of wireless transmission systems, in particular to a remote wireless transmission management system for industrial field real-time data. Background Art

[0002] The remote wireless transmission management system for real-time data of industrial sites is a system used to transmit and manage data on industrial sites, allowing managers to quickly summarize and analyze data on industrial sites, grasp the production status of industrial sites, and adjust and arrange the production status of the enterprise.

[0003] For the existing remote wireless transmission management system of real-time data of industrial sites, reference can be made to the Chinese patent publication number CN104219282A, which discloses in detail a remote wireless transmission system for substation data collection, which includes three parts: a management center main station, a wireless data transmission unit and a data collection unit. It provides a remote wireless transmission system for substation data collection that utilizes the wireless IP provided by the GPRS mobile network system and is built on the GPRS service network platform to achieve the purpose of automatically collecting substation data and remotely transmitting substation data. The system network has a wide coverage range, and the address of each substation collector is different, ensuring the accuracy of the collected information. The system operates safely and reliably, achieving the effect of substation data collection and remote wireless transmission of substation power data, improving work efficiency, reducing the labor intensity of power workers, strong adaptability, and high cost performance.

[0004] The existing remote wireless transmission and management system for real-time data of industrial sites has poor subsequent expansion capabilities and cannot effectively adapt to the diversified needs of future industrial scenarios. In addition, most data are transmitted in the form of a single network, which has poor reliability and anti-interference. Therefore, to address the above problems, a remote wireless transmission and management system for real-time data of industrial sites is proposed. Summary of the Invention

[0005] In order to solve any one of the problems raised in the background art, the present invention proposes a remote wireless transmission management system for real-time data of an industrial site.

[0006] The technical solution adopted by the present invention to solve the technical problem is as follows: a remote wireless transmission management system for real-time data of an industrial field, comprising a master node, a slave node, a monitoring node, and a transmission protocol; the transmission protocol comprises a network management message, a TPDO message, an RPDO message, a slave burst message, an SDO message, a block transmission message, a dedicated message, and a backup message;

[0007] The master node is a network center node responsible for network management, the slave node is any one of a data acquisition node or a control node, the monitoring node is any one of a data monitoring or data display node, and the network management message, TPDO message, RPDO message, slave burst message, SDO message, block transfer message, special message and spare message are all composed of a function code, a device identification code, a data length and data.

[0008] Preferably, the monitoring node does not need to be managed by a master node, and the monitoring node needs to monitor network information, needs to monitor network galaxies, and needs to set the same network ID, channel and decryption authorization code in order to correctly receive data.

[0009] Preferably, the network management message is responsible for network management, the network management message function code range is 0x00-0x0f, the network management message includes a message for calling a slave, a synchronization message, a message for adding a node, and a message for deleting a node, and the network management message adopts a single-phase transmission mode.

[0010] Preferably, the TPDO message is public broadcast data sent by the master node, and the function code range of the TPDO message is 0x10-0x2f, a total of 32 groups, which are sent to the slave node or monitoring node in a cycle according to the configuration of the master node. The slave node or monitoring node does not need to reply to the message content.

[0011] Preferably, the RPDO message is the collected data or status data sent by the slave node, and the function code range is 0x30-0x4f, with a total of 32 groups. The slave node sends it to the wireless network according to the synchronization frame and time slice sent by the master node. The master node and the monitoring node do not need to reply to the message content.

[0012] Preferably, the slave burst message is a message sent by a slave node to control other nodes, and the function code range is 0x50-0x5f, with a total of 16 groups. The slave burst message is executed after detecting a synchronization frame and does not require a reply message.

[0013] Preferably, the SDO message is a one-to-one communication frame between the master node and the slave node, and the function code range is 0x60-0x6f, totaling 16 groups. The SDO message is used to configure slave information and read slave information due to reliable communication. The SDO message adopts a question-and-answer method and single-frame communication.

[0014] Preferably, the block transfer message adopts a negotiation mechanism to transmit communications that are larger than one frame and require reliable data. When the block transfer message is transmitted, it is first transmitted one-to-one, and the number of transmission frames, verification method and other information are agreed upon. Then, one-way transmission is performed. When the transmission frame reaches the agreed frame, both parties verify the data and complete the transmission of a data block. The function code range of the block transfer message is 0x70-0x7f, with a total of 16 groups.

[0015] Preferably, the function code of the dedicated message is 0x80-0xAF, and the standby message is a function code 0xB0-0xFF reserved for subsequent protocol expansion.

[0016] The present invention is beneficial in that:

[0017] 1. This invention covers all scenarios through multiple types of messages, including network management messages, TPDO messages, RPDO messages, slave burst messages, SDO messages, block transfer messages, dedicated messages, and backup messages. It meets various needs such as data collection, control instructions, device configuration, and firmware upgrades. It is more comprehensive than traditional protocols. Dedicated messages and backup messages provide compatibility for subsequent function expansion, effectively adapting to the diverse needs of future industrial scenarios.

[0018] 2. By summoning slave messages, synchronizing messages, and updating synchronization codes, the present invention allows the master node to dynamically manage the joining or leaving of slave nodes and allocate synchronization delays to reduce network conflicts. Traditional wireless networks rely on complex ad hoc network protocols, which are inefficient. Slave nodes trigger data reporting based on master node synchronization frames, avoiding multi-node competition for channels and reducing latency. The monitoring nodes in the present invention only need to match the network ID, channel, and authorization code to receive data, eliminating the need for master node management, facilitating the rapid establishment of distributed monitoring systems.

[0019] 3. The SDO message of the present invention supports the reading and writing of single-byte, double-byte, and four-byte integers and floating-point registers, and can meet the precise configuration of complex industrial parameters such as temperature, pressure, and current. The block transfer message realizes the fragmented transmission of large files by negotiating the number of frames and the verification method, which is suitable for firmware upgrades or batch configurations, avoiding the inefficiency of frame-by-frame confirmation of traditional protocols. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0021] Figure 1 This is a schematic diagram of the master node workflow of the present invention;

[0022] Figure 2 Schematic diagram of the slave node workflow of the present invention. DETAILED DESCRIPTION

[0023] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0024] See also Figure 1-Figure 2 As shown, a remote wireless transmission management system for real-time data of an industrial site includes a master node, a slave node, a monitoring node, and a transmission protocol; the transmission protocol includes a network management message, a TPDO message, an RPDO message, a slave burst message, an SDO message, a block transfer message, a dedicated message, and a spare message;

[0025] The master node is a network center node responsible for network management, the slave node is any one of a data acquisition node or a control node, and the monitoring node is any one of a data monitoring or data display node. The network management message, TPDO message, RPDO message, slave burst message, SDO message, block transfer message, special message and spare message are all composed of a function code, a device identification code, a data length and data; all function codes are subjected to XOR check.

[0026] Furthermore, the monitoring node does not need to be managed by a master node, and the monitoring node needs to monitor network information, needs to monitor network galaxies, and needs to set the same network ID, channel and decryption authorization code in order to correctly receive data.

[0027] Furthermore, the network management message is responsible for network management. The function code range of the network management message is 0x00-0x0f. The network management message includes a call slave message, a synchronization message, an add node message, and a delete node message. The network management message adopts a single-phase transmission mode.

[0028] The function code of the slave call message is 0x00, with no return value; the synchronization code update message is 0x02, with no return value.

[0029] Furthermore, the TPDO message is public broadcast data sent by the master node, and the function code range of the TPDO message is 0x10-0x2f, totaling 32 groups, which are sent to the slave node or monitoring node in a cycle according to the configuration of the master node. The slave node or monitoring node does not need to reply to the message content.

[0030] Furthermore, the RPDO message is the collected data or status data sent by the slave node, with a function code range of 0x30-0x4f, totaling 32 groups. The slave node sends it to the wireless network according to the synchronization frame and time slice sent by the master node. The master node and the monitoring node do not need to reply to the message content.

[0031] Furthermore, the slave burst message is a message sent by a slave node to control other nodes, and the function code range is 0x50-0x5f, with a total of 16 groups. The slave burst message is executed after detecting a synchronization frame and does not require a reply message;

[0032] The function code for setting a single-byte register message in the slave burst message is 0x50, the function code for setting a double-byte register message is 0x51, the function code for setting a four-byte register message is 0x52, and the function code for setting a floating-point register message is 0x53. The above function codes are all sent after receiving the master node synchronization message and have no return value.

[0033] Furthermore, the SDO message is a one-to-one communication frame between the master node and the slave node, and the function code range is 0x60-0x6f, with a total of 16 groups. The SDO message is used to configure and read slave information due to reliable communication. The SDO message adopts a question-and-answer method and single-frame communication;

[0034] The SDO message function code for writing a single-byte register is 0x60, the function code for reading a single-byte register is 0x61, the function code for writing a double-byte register is 0x62, the function code for reading a double-byte register is 0x63, the function code for writing a four-byte register is 0x64, the function code for reading a four-byte register is 0x65, the function code for writing a floating-point register is 0x66, and the function code for reading a floating-point register is 0x67. The slave node returns the result 0 for failure and 1 for success for the above function codes.

[0035] Furthermore, the block transfer message adopts a negotiation mechanism to transmit communications that are larger than one frame and require reliable data. When the block transfer message is transmitted, it is first transmitted one-to-one, and the number of transmission frames, verification method and other information are agreed upon. Then, one-way transmission is performed. When the transmission frame reaches the agreed frame, both parties verify the data and complete the transmission of a data block. The function code range of the block transfer message is 0x70-0x7f, with a total of 16 groups.

[0036] The function code for initiating a block transfer message command is 0x70, and the slave node returns a structure 0 for permission and 1 for disallowance; the block transfer function code is 0x71, with no return value; the block transfer message check function code is 0x72, and the slave node returns a result 0 for failure and requiring retransmission and 1 for success; the block transfer message completion function code is 0x73, and the return result 0 for failure and 1 for success.

[0037] Furthermore, the function code of the dedicated message is 0x80-0xAF, and the standby message is a function code 0xB0-0xFF reserved for subsequent protocol expansion;

[0038] Dedicated message users can freely set to comply with one-to-one response messages, such as broadcast commands, device restart commands, device status read commands, and alarm output setting commands.

[0039] The basic principles, main features, and advantages of the present invention are shown and described above. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention, and such changes and modifications fall within the scope of the invention as claimed.

Claims

1. A remote wireless transmission management system for real-time industrial field data, characterized by: It includes a master node, a slave node, a monitoring node and a transmission protocol; the transmission protocol includes a network management message, a TPDO message, a RPDO message, a slave burst message, an SDO message, a block transfer message, a dedicated message and a spare message; The master node is a network center node responsible for network management, the slave node is any one of a data acquisition node or a control node, the monitoring node is any one of a data monitoring or data display node, and the network management message, TPDO message, RPDO message, slave burst message, SDO message, block transfer message, special message and spare message are all composed of a function code, a device identification code, a data length and data.

2. The remote wireless transmission management system for industrial field real-time data according to claim 1, characterized in that: The monitoring node does not need to be managed by the master node, and the monitoring node needs to monitor network information, needs to monitor network galaxies, and needs to set the same network ID, channel and decryption authorization code in the network to correctly receive data.

3. The remote wireless transmission management system for industrial field real-time data according to claim 1, characterized in that: The network management message is responsible for network management. The function code range of the network management message is 0x00-0x0f. The network management message includes a message for calling a slave, a synchronization message, a message for adding a node, and a message for deleting a node. The network management message adopts a single-phase transmission mode.

4. The remote wireless transmission management system for industrial field real-time data according to claim 1, characterized in that: The TPDO message is public broadcast data sent by the master node, and the function code range of the TPDO message is 0x10-0x2f, totaling 32 groups. It is sent to the slave node or monitoring node in a cycle according to the configuration of the master node. The slave node or monitoring node does not need to reply to the message content.

5. The remote wireless transmission management system for industrial field real-time data according to claim 1, characterized in that: The RPDO message is the collected data or status data sent by the slave node. The function code range is 0x30-0x4f, totaling 32 groups. The slave node sends it to the wireless network according to the synchronization frame and time slice sent by the master node. The master node and the monitoring node do not need to reply to the message content.

6. The remote wireless transmission management system for industrial field real-time data according to claim 1, characterized in that: The slave burst message is a message sent by a slave node to control other nodes. The function code range is 0x50-0x5f, with a total of 16 groups. The slave burst message is executed after detecting a synchronization frame and does not require a reply message.

7. The remote wireless transmission management system for industrial field real-time data according to claim 1, characterized in that: The SDO message is a one-to-one communication frame between the master node and the slave node, and the function code range is 0x60-0x6f, with a total of 16 groups. The SDO message is used to configure and read slave information due to reliable communication. The SDO message adopts a question-and-answer method and single-frame communication.

8. The remote wireless transmission management system for industrial field real-time data according to claim 1, characterized in that: The block transfer message adopts a negotiation mechanism to transmit communications that are larger than one frame and require reliable data. When the block transfer message is transmitted, it is first transmitted one-to-one, and the number of transmission frames, verification method and other information are agreed upon. Then, one-way transmission is performed. When the transmission frame reaches the agreed frame, both parties verify the data and complete the transmission of a data block. The function code range of the block transfer message is 0x70-0x7f, with a total of 16 groups.

9. The remote wireless transmission management system for industrial field real-time data according to claim 1, characterized in that: The function code of the dedicated message is 0x80-0xAF, and the standby message is the function code 0xB0-0xFF reserved for subsequent protocol expansion.

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