CN108052086A - data collection system - Google Patents

Abstract

This invention provides a data acquisition system, including: workshop equipment, an OPC server, an OPC client, and a host computer. The OPC server receives parameter information from the workshop equipment; the OPC client receives the parameter information from the OPC server and sends it to the host computer. This invention solves the problem in the prior art where remote data acquisition from various workshop equipment is complex due to different communication protocols. It enables efficient unification of the fieldbus even when different workshop equipment supports different communication protocols, avoiding the complexity of repeatedly developing drivers.

Description

data collection system

technical field

The invention relates to the technical field of equipment information monitoring systems, in particular to a data acquisition system.

Background technique

At present, most sheet metal stamping workshops use equipment that supports Modbus protocol (a communication protocol applied to electronic controllers) or Profibus protocol (communication for equipment-level control systems and distributed I/O), including CNC punching machines , stamping manipulator, upper computer (touch screen or PC) and other auxiliary equipment. However, some sheet metal stamping workshops have equipment provided by different manufacturers at the same time. As shown in Figure 1, the stamping manipulator of the Profibus protocol on the stamping production line needs to add an additional protocol conversion device to unify it into a Modbus field bus and collect data to the host. machine. Considering the dot-strip line, a production line may spend too much cost to unify the fieldbus.

In addition, the structure of the traditional data acquisition system configured in the stamping workshop is cumbersome, as shown in Figure 2, which depicts the interface relationship between the traditional data acquisition system and the hardware. To obtain the data of the underlying equipment in SCADA), a computer with special software or SCADA with special software is required to write a driver for each specific hardware. When the workshop needs to upgrade the equipment, the original driver program does not support the change of the hardware device, and a new driver program needs to be redeveloped.

Contents of the invention

In view of this, the embodiment of the present invention provides a data acquisition system to solve the problem in the prior art that the upper computer remotely collects the data of each workshop equipment due to the different communication protocols of the workshop equipment.

For this reason, the embodiment of the present invention provides following technical scheme:

The first aspect of the present invention provides a data acquisition system, including: workshop equipment, OPC server, OPC client and host computer; the OPC server is used to receive the parameter information of the workshop equipment; the OPC client and The OPC server is connected through an OPC interface, and the OPC client is used to receive the parameter information from the OPC server and send the parameter information to the upper computer.

Optionally, the OPC server receives the parameter information from the workshop equipment through an Ethernet bus or a CAN network bus.

Optionally, the upper computer includes a supervisory control and data acquisition system SCADA.

Optionally, the workshop equipment includes workshop equipment supporting Modbus protocol and/or workshop equipment supporting Profibus protocol.

Optionally, the OPC server is an OPC UA server; the OPC client is an OPC UA client; the OPC UA server is connected to the OPC UA client through an OPC UA interface.

Optionally, the workshop equipment includes at least one of the following: a numerical control punch press, a punching manipulator, and a programmable logic controller (PLC).

Optionally, the parameter information includes at least one of the following: operating parameter information of the workshop equipment and status information of the workshop equipment.

The second aspect of the present invention provides a data acquisition system, including: workshop equipment, device driver server TCPServer, device driver client TCP Client and host computer; the device driver server TCP Server includes drivers of multiple protocols, used for receiving the parameter information of the workshop equipment; the equipment driver client TCP Client is used for receiving the parameter information from the equipment driver server TCP Server, and sending the parameter information to the host computer.

Optionally, the drivers of the various protocols include drivers of the Modbus protocol and/or drivers of the Profibus protocol.

Optionally, the device driver server TCP Server receives the parameter information from the workshop device through an Ethernet bus or a CAN network bus.

Optionally, the upper computer includes a supervisory control and data acquisition system SCADA.

Optionally, the workshop equipment includes workshop equipment supporting Modbus protocol and/or workshop equipment supporting Profibus protocol.

Optionally, the workshop equipment includes at least one of the following: a numerical control punch press, a punching manipulator, and a programmable logic controller (PLC).

Optionally, the parameter information includes at least one of the following: operating parameter information of the workshop equipment and status information of the workshop equipment.

The technical scheme of the embodiment of the present invention has the following advantages:

The embodiment of the present invention provides a kind of data acquisition system, comprises: workshop equipment, OPC server, OPC client and upper computer; OPC server is used for receiving the parameter information of this workshop equipment; OPC client and OPC server are connected through OPC interface, The OPC client is used to receive the parameter information from the OPC server, and send the parameter information to the upper computer. Using OPC standard technology, it is backward compatible with multiple protocol drivers and field buses, and provides a standard client interface upwards to solve the problem of remote data collection of each workshop equipment by the upper computer due to the different communication protocols of workshop equipment in the prior art. Complicated issues, even if each workshop equipment supports different communication protocols, the fieldbus can be efficiently unified, reducing the complexity of repeated driver development.

The embodiment of the present invention also provides a data acquisition system, including: workshop equipment, device driver server TCPServer, device driver client TCP Client and host computer; the device driver server TCP Server includes driver programs of multiple protocols for receiving The parameter information of the workshop equipment; the equipment driver client TCP Client is used to receive the parameter information from the device driver server TCP Server, and send the parameter information to the host computer. The drivers of multiple protocols are attributed to a device driver server TCP Server, thus solving the problem in the prior art that the upper computer remotely collects the data of each workshop device due to different communication protocols in the prior art, and realizes that even if each workshop The device supports different communication protocols, and can also efficiently unify the field bus, reducing the complexity of repeated driver development.

Description of drawings

In order to more clearly illustrate the specific implementation of the present invention or the technical solutions in the prior art, the following will briefly introduce the accompanying drawings that need to be used in the specific implementation or description of the prior art. Obviously, the accompanying drawings in the following description The drawings show some implementations of the present invention, and those skilled in the art can obtain other drawings based on these drawings without any creative work.

Figure 1 is a flow chart of the production process of the stamping production line;

Fig. 2 is a schematic diagram of the interface between the data acquisition system and the hardware in the prior art;

Fig. 3 is the structure diagram of the data acquisition system adopting OPC standard according to the embodiment of the present invention;

Fig. 4 is a data acquisition system architecture diagram adopting the OPC UA standard according to an embodiment of the present invention;

FIG. 5 is an architecture diagram of a data collection system using the TCP standard according to an embodiment of the present invention.

Detailed ways

In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative efforts fall within the protection scope of the present invention.

In this embodiment, a data acquisition system is provided, which can be applied to the data acquisition of each workshop equipment in a sheet metal stamping workshop. FIG. As shown in 3, the data acquisition system includes: workshop equipment, OPC server, OPC client and upper computer. The above-mentioned workshop equipment can be CNC punching machine, stamping manipulator, programmable logic controller (Programmable Logic Controller, referred to as PLC) or other auxiliary equipment, each workshop equipment is connected to the field bus, each workshop equipment can include support Modbus protocol workshop equipment , can also include workshop equipment that supports the Profibus protocol. The OPC server receives parameter information from each workshop equipment. The parameter information can be, for example, the operation parameter information of each workshop equipment, or the status information of each workshop equipment. Specifically, the operation parameter information can include the speed, rotation Angle, the rising height or speed of the vertical axis of the workshop equipment, the falling height or speed, etc., the status information can include the retrieving state, loading state, unloading state, discharging state, etc. The OPC server can communicate with each workshop equipment in multiple ways. In an optional embodiment, the OPC server can receive the above-mentioned parameter information from each workshop equipment through the Ethernet bus. In another optional embodiment, the OPC server The above parameter information can also be received from each workshop equipment through the CAN network bus, thereby ensuring the real-time and accuracy of data transmission between the OPC server and each workshop equipment. The OPC client is connected to the OPC server through the OPC interface, and provides a standard interface to the OPC client to realize the connection between the application program and the OPC server, synchronous reading and writing, asynchronous reading and writing and other functions. The OPC client receives the parameter information from the OPC server, and sends the parameter information to the host computer, so that the host computer can monitor the operating status of each workshop. Through the protocol conversion module shown in Figure 3, the protocols of different equipment in the workshop are unified in the form of software, which avoids the installation of additional protocol conversion devices as shown in Figure 1, and saves installation costs. Using OPC standard technology, it is downward compatible with multiple protocol drivers and field buses, and provides a standard client interface upwards, thus solving the problem of remote collection of data from each workshop equipment by the upper computer due to different communication protocols of workshop equipment in the prior art The problem of complex operation has realized that even if the equipment in each workshop supports different communication protocols, it can also efficiently unify the field bus, reduce the complexity of repeated development of driver programs, simplify the complexity, and realize the mutual conversion between multiple protocols. Data interaction between multiple systems.

In an optional embodiment, the host computer may include a supervisory control and data acquisition system (Supervisory Control And Data Acquisition, referred to as SCADA). Similarly, other applications that implement OPC clients can also be extended to connect to OPC servers, with scalability.

In response to the trend of standardization and cross-platform, in order to better promote OPC, the OPC Foundation has launched a new OPC standard - OPC UA based on the successful application of OPC in recent years. The OPC UA interface protocol includes the previous A&E, DA, OPC XML DA or HDA. Only one address space can be used to access all the previous objects, and it is not limited by the WINDOWS platform, because it is defined from the transport layer Scoket above. The flexibility and security are improved compared to the previous OPC. Therefore, in an optional embodiment, as shown in FIG. 4, the above-mentioned OPC server is an OPC UA server, and the above-mentioned OPC client is an OPC UA client, and the above-mentioned OPC UA server and the OPC UA client are connected through an OPC UA interface. It adopts the technology based on the standard interface of OPC UA (the full name of OPC is Object Linking and Embedding (OLE) for Process Control OPC Unified Architecture, abbreviated as OPC UA, that is, OPC unified architecture), and adopts the connection, reading and writing of OPC UA standard And other interfaces, compatible with hardware device upgrades, eliminating the need to repeatedly write device drivers, and achieving more efficient data transmission. Support OPC UA server to connect to the field bus of various protocols, and can configure the drivers of the underlying devices individually or in batches, and can effectively read and write the operating parameters and status information of related devices, and perform data collection and interaction. Provide standard interfaces to OPC UA clients to realize functions such as connection between applications and OPC UA servers, synchronous reading and writing, and asynchronous reading and writing. Provide a migration strategy, in the form of a wrapper (such as packaging the original OPC DA interface into an OPC UA data access interface without any changes to the original internal interface, using the packaged OPC UA Data access interface to access the original OPC DA data access interface) to realize data access between OPC UA client and traditional data acquisition system server, or realize traditional data acquisition in the form of proxy (for example, OPC UA client connects to OPCDA server) Data access between system clients and OPC UA servers. In the monitoring management layer, the OPC UA client is used to realize the standard interface provided by the OPC UA server, and the special data acquisition software of the SCADA system realizes the standard interface of the OPC UA server to realize the read and write operations on the underlying equipment.

All in all, the data acquisition system architecture shown in Figure 4 can support fieldbuses of multiple protocols downwards, save the installation cost of the workshop and reduce the development cost of drivers, and provide standard service interfaces upwards, shorten the development cycle, and reduce the operating cost. maintenance cost. At the same time, it can reasonably and effectively improve the data acquisition systems of different sheet metal stamping workshops, realize the OPC UA standardized interface, and can be extended to and interact with other applications that implement the OPC UA standard. The data acquisition system of this framework has expansibility, compatibility and interactivity.

The embodiment of the present invention also provides another data acquisition system, as shown in FIG. 5 , including: workshop equipment, a device driver server TCP Serve, a device driver client TCP Client, and a host computer. Workshop equipment can include workshop equipment supporting Modbus protocol, or workshop equipment supporting Profibus protocol, specifically, it can be CNC punch press, stamping manipulator, programmable logic controller PLC or other auxiliary equipment, and each workshop equipment is connected to the field bus . The upper computer can be SCADA, so as to collect and monitor equipment data more effectively. The device driver server TCPServer includes drivers of multiple protocols, for example, drivers of multiple protocols may include drivers of Modbus protocol, and may also include drivers of Profibus protocol. The device driver server TCP Server can receive the above parameter information from each workshop device through the Ethernet bus or CAN network bus, so as to ensure the real-time and accuracy of data transmission between the device driver server TCP Server and each workshop device in many ways. The device driver server TCP Server is used to receive the parameter information of the workshop equipment. The parameter information can be the operation parameter information of the workshop equipment, and can also be the status information of the workshop equipment. Specifically, the operation parameter information can include the rotation speed of the workshop equipment swing arm , rotation angle, rising height or speed of the vertical axis of the workshop equipment, falling height or speed, etc. The state information can include the retrieving state, loading state, unloading state, and discharging state, etc. The device driver client TCP Client is used to receive the parameter information from the device driver server TCP Server, and send the parameter information to the host computer. By merging multiple drivers, the drivers of multiple protocols are attributed to a device driver server (TCP Server, that is, a server that uses TCP to transmit data), as shown in FIG. 5 . The driver of the Modbus protocol can only access the devices of the Modbus protocol. Similarly, the driver of the Profibus-DP protocol can only access the devices of the Profibus-DP protocol. The interface of the SCADA application program is provided on the device driver server to meet the data access requirements of the SCADA application program. In the SCADA application client (TCP Client, that is, the client that uses TCP for data transmission), implement the interface provided by the device driver server, realize the read and write operations on the device driver server, and data interaction with different devices.

Although the embodiments of the present invention have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations all fall into the scope of the appended claims. within the limited range.

Claims (14)

1. a kind of data collecting system, which is characterized in that including：Workshop appliance, opc server, OPC client and host computer；

The opc server is used to receive the parameter information of the workshop appliance；

The OPC client is used to receive the parameter information from the opc server, and the parameter information is sent to institute State host computer.

2. data collecting system according to claim 1, which is characterized in that the opc server passes through industry ethernet Or CAN network bus receives the parameter information from the workshop appliance.

3. data collecting system according to claim 1, which is characterized in that the host computer includes monitoring control and data Acquisition system system SCADA.

4. data collecting system according to claim 1, which is characterized in that the workshop appliance includes supporting Modbus associations The workshop appliance of view and/or the workshop appliance for supporting Profibus agreements.

5. data collecting system according to claim 1, which is characterized in that the opc server is OPC UA servers； The OPC client is OPC UA clients.

6. data collecting system according to claim 1, which is characterized in that the workshop appliance include it is following at least it One：Numerical control press, stamping mechanical arm, programmable logic controller (PLC) PLC.

7. according to any data collecting system in claim 1 to 6, which is characterized in that the parameter information include with It is at least one lower：The status information of the trip information of the workshop appliance, the workshop appliance.

8. a kind of data collecting system, which is characterized in that including：Workshop appliance, device drives server TCP Server, equipment Drive client TCP Client and host computer；

The device drives server TCP Server include the driver of various protocols, for receiving the workshop appliance Parameter information；

The device drives client TCP Client are used to receive the parameter from the device drives server TCPServer Information, and the parameter information is sent to the host computer.

9. data collecting system according to claim 8, which is characterized in that the driver of the various protocols includes The driver of Modbus agreements and/or the driver of Profibus agreements.

10. data collecting system according to claim 8, which is characterized in that the device drives server TCP Server receives the parameter information by industry ethernet or CAN network bus from the workshop appliance.

11. data collecting system according to claim 8, which is characterized in that the host computer includes monitoring control and number According to acquisition system system SCADA.

12. data collecting system according to claim 8, which is characterized in that the workshop appliance includes supporting Modbus The workshop appliance of agreement and/or the workshop appliance for supporting Profibus agreements.

13. data collecting system according to claim 8, which is characterized in that the workshop appliance include it is following at least it One：Numerical control press, stamping mechanical arm, programmable logic controller (PLC) PLC.

14. according to any data collecting system in claim 8 to 13, which is characterized in that the parameter information includes At least one of：The status information of the trip information of the workshop appliance, the workshop appliance.