CN216411911U

CN216411911U - Dual-redundancy control system for stage machinery

Info

Publication number: CN216411911U
Application number: CN202123376255.2U
Authority: CN
Inventors: 侯俊杰; 白彦斌; 张秀蓉; 王晶; 王斌; 祁虎强; 何鹏志; 韩旭润; 白宝栋
Original assignee: Big Stage Of Gansu Engineering Technology Engineering Co ltd
Current assignee: Big Stage Of Gansu Engineering Technology Engineering Co ltd
Priority date: 2021-12-30
Filing date: 2021-12-30
Publication date: 2022-04-29
Anticipated expiration: 2031-12-30

Abstract

The utility model provides a dual-redundancy control system for stage machinery, and belongs to the field of stage machinery control systems. The system comprises an on-board equipment main control CPU, a redundant equipment PLC, a redundant main PLC, an IO slave station, an under-board equipment main control CPU and a first switch which are connected through a ring network, wherein PRODINET communication is adopted; the main control CPU of the desktop equipment is also connected with a plurality of first DP slave stations through PRODINET communication; the main control CPU of the under-desk equipment is also connected with a plurality of second DP slave stations through PRODINET communication; the redundant standby PLC and the redundant main PLC are connected through the optical fiber cable redundancy to establish data synchronous operation; the first switch is also connected with a human-computer interaction unit through an industrial Ethernet. The system reliability is enhanced, and the failure rate is reduced; the dual-redundancy control system realizes redundancy by configuring a repeated CPU and carrying a ring network structure, has a certain fault-tolerant mechanism, and effectively avoids the condition of system paralysis caused by CPU failure or certain network interruption.

Description

Dual-redundancy control system for stage machinery

Technical Field

The utility model belongs to the field of stage machinery control systems, and particularly relates to a dual-redundancy control system for stage machinery.

Background

With the continuous development of the modern economic society, the cultural industry is rapidly developed, thereby promoting the construction of theaters and theaters in China. The stage machine is used as an important main device in a theater, and plays a decisive role in the scale and the function of the theater. With the rapid development of the stage machinery industry, more and more complex stage machinery equipment appears in front of people, and the stage machinery equipment is only shown to people as a body, and a soul is injected into the stage machinery equipment by a control system with higher precision, stronger performance and better safety factor. As a control system of stage mechanical soul, the system determines the performance of stage machinery to a certain extent and determines the advancement and reliability of modern theaters. Therefore, a complete, reliable and advanced control system plays a vital role in the stage machinery industry.

At present, most of domestic stage mechanical control systems are based on conventional single PLC control. The PLC is a programmable memory having substantially the same structure as the microcomputer. The system has the advantages of strong function, high reliability, good adaptability, modular structure and the like, and is widely applied to the field of stage mechanical control. The common famous PLC manufacturers include AB, European SIMINES, Japanese Ohlong, Mitsubishi, etc. in the United states. The main drawback of this method with only a single PLC control is that when the CPU fails or the PROFINET network is disconnected, the devices in the whole system will stop running, which will make the performance not smooth.

Disclosure of Invention

The utility model aims to solve the technical problem of the control system paralysis generated when a CPU fault or a certain PROFINET network is disconnected and other faults occur in the existing stage mechanical control system controlled by a single PLC, and provides a dual-redundancy control system for stage machinery. The two CPUs can process the same project data and the same user program in parallel, if one of the two CPUs breaks down or the PROFINET looped network is disconnected, the safe operation of the whole system can still be ensured, all nodes still continue to communicate with each other, the stability and the reliability of the system are ensured, and the possibility of system shutdown is reduced.

In order to achieve the purpose, the technical scheme adopted by the utility model is a dual-redundancy control system for stage machinery, which comprises an on-board equipment main control CPU, a redundant equipment PLC, a redundant main PLC, an IO slave station, an under-board equipment main control CPU and a first switch which are connected through a ring network, wherein PRODINET communication is adopted;

the main control CPU of the desktop equipment is used for controlling the desktop grid top layer equipment and is also connected with a plurality of first DP slave stations through PRODINET communication;

the main control CPU of the under-desk equipment is used for controlling the foundation pit and the table-board equipment, and is also connected with a plurality of second DP slave stations through PRODINET communication;

the redundant standby PLC and the redundant main PLC are connected through the optical fiber cable redundancy to establish data synchronous operation;

the plurality of IO slave stations are used for acquiring and controlling the state of each device on site;

the first switch is arranged between the main control CPU of the desktop equipment and the main control CPU of the desktop equipment, and the first switch is further connected with a human-computer interaction unit through an industrial Ethernet.

Further, a second switch is connected between two adjacent IO slave stations.

Furthermore, the human-computer interaction unit comprises a touch screen, a remote data operation and maintenance center, a main control console and a mobile control console, and the touch screen, the remote data operation and maintenance center, the main control console and the mobile control console are respectively connected with the first switch through industrial Ethernet.

Compared with the prior art, the utility model has the beneficial technical effects that as the technical scheme is adopted: the dual-redundancy control system for the stage machinery has the advantages of enhanced reliability and reduced failure rate; the dual-redundancy control system realizes redundancy by configuring a repeated CPU and carrying a ring network structure, has a certain fault-tolerant mechanism, and effectively avoids the condition of system paralysis caused by CPU failure or certain network interruption.

Drawings

Fig. 1 is a schematic structural diagram of a dual redundant control system for stage machinery according to an embodiment of the present invention;

reference numerals: the system comprises a touch screen 1, a remote data operation and maintenance center 2, an on-board equipment main control CPU3, an under-board equipment main control CPU4, a first switch 5, a first IO slave station 6, a second switch 7, a first DP slave station 8, a second DP slave station 9, a redundant main PLC10, a redundant standby PLC11, a main control station 12 and a mobile control station 13.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to preferred embodiments.

Examples

A dual-redundancy control system for stage machinery comprises an on-board equipment main control CPU3, a redundant equipment PLC11, a redundant main PLC10, an IO slave station 6, an under-board equipment main control CPU4 and a first switch 5 which are connected through a ring network, wherein PRODINET communication is adopted;

the desktop device main control CPU3 is used for controlling desktop grid top layer devices, and the desktop device main control CPU3 is also connected with a plurality of first DP slave stations 8 through PRODINET communication;

the under-counter equipment main control CPU4 is used for controlling foundation pit and table-board equipment, and the under-counter equipment main control CPU4 is also connected with a plurality of second DP slave stations 9 through PRODINET communication;

the redundant standby PLC11 and the redundant main PLC10 are connected in a redundant mode through optical fiber cables to establish data synchronous operation;

the plurality of IO slave stations 6 are used for acquiring and controlling the state of each device in the field;

the first switch 5 is arranged between the main control CPU3 of the desktop equipment and the main control CPU4 of the desktop equipment, and the first switch 5 is further connected with a human-computer interaction unit through an industrial Ethernet.

Preferably, a second switch 7 is further connected between two adjacent IO slave stations 6, the human-computer interaction unit includes a touch screen 1, a remote data operation and maintenance center 2, a master control station 12 and a mobile control station 13, and the touch screen 1, the remote data operation and maintenance center 2, the master control station 12 and the mobile control station 13 are respectively connected with the first switch 5 through an industrial ethernet.

In this embodiment, redundant connection is established between the redundant standby PLC11 and the redundant main PLC10 through 2 optical fiber cables, 4 synchronization modules are used in total, in the system operation process, data synchronization between the redundant standby PLC11 and the redundant main PLC10 can be switched freely, when one of the redundant standby PLC and the redundant main PLC fails, the other redundant standby PLC and the redundant main PLC can be used as a main CPU to perform uninterrupted data exchange with other devices, and normal operation of the devices is ensured. All PROFINET devices in a PROFINET ring network support Media Redundancy (MRP), and when any point in the ring network is disconnected, the current operating state of the devices is not affected. The IO slave station 6 is mainly used for state acquisition and control output of each device on site, the state acquisition mainly comprises signals of limiting, rope loosening, rope filling, thermal protection, shearing prevention and the like, and the IO is directly addressed by the redundant standby PLC11 and/or the redundant main PLC10 through PROFINET.

The man-machine interaction unit can also comprise an emergency control box, a manual operation rocker and the like besides a main control console, a mobile station, a touch screen 1 and a remote data operation and maintenance center 2. The man-machine interaction unit mainly sends control instructions to the main control CPU3 of the desktop device and the main control CPU4 of the desktop device through the industrial Ethernet, and the main control CPU3 of the desktop device and the main control CPU4 of the desktop device feed back the read state data, alarm information and the like to the man-machine interaction unit, so that functions of nearby control, remote control, alarm display, fault reset, device running state monitoring, system state monitoring and the like of the device can be realized. The man-machine interaction unit communicates with the main control CPU3 of the desktop device and the main control CPU4 of the desktop device through industrial Ethernet, and is isolated outside the ring network through the first switch 5.

In specific application, taking the stage mechanical control of a large theater as an example, the theater comprises table-board equipment such as a suspender and a lamp pole, table-board equipment such as a side car platform and a rear car platform, and table-board equipment such as a music pool lifting platform and a main lifting platform, and the total number of the table-board equipment is 160. The system is to realize the functions of CPU redundancy and looped network redundancy, the forward and reverse rotation of all equipment, the speed regulation and positioning functions of speed regulation equipment, the protection functions of limiting, overtravel, rope loosening and the like of the equipment, the fault and alarm indication function, the real-time monitoring function of equipment state and the like.

Due to the fact that the theater field environment is complex, the number of devices is large, data signals are complex, the distance span between the grid top device layer on the platform and the foundation pit device layer under the platform is long, and therefore the control system integrally adopts a distributed control mode. The main control CPU3 of the equipment on the platform controls the equipment on the grid top layer of the platform, the main control CPU4 of the equipment under the platform controls foundation pits and the equipment on the platform surface, the redundant main PLC10 and the redundant equipment PLC11 are connected with two CPUs synchronously through redundancy established by optical cables, a ring network is formed by the redundant main PLC10 and the redundant equipment PLC11, the main control CPU3 of the equipment on the platform, the main control CPU4 of the equipment under the platform, the IO slave station 6, the first switch 5 and the second switch 7, a closed ring structure is formed, the redundant main PLC10 and the redundant equipment PLC11 play a medium redundancy role of a manager, and the rest PROFINET equipment play a medium redundancy role of a client. MRP-based communication connection exists between the redundancy manager and the redundancy client, the touch screen 1, the remote data operation and maintenance center 2, the main control station 12 and the mobile control station 13 are separated outside a ring network by using switches, and the first DP slave station 8, the second DP slave station 9, the on-board equipment main control CPU3 and the off-board equipment main control CPU4 adopt PROFIBUS-DP communication.

And (3) fault testing:

failure 1: during operation of the plant, the redundant master PLC10 is manually switched to stop mode.

The equipment does not stop running, at this time, the redundant standby PLC11 becomes the main CPU to continue to execute the process control, and the touch screen 1, the remote data operation and maintenance center 2, the main console 12, and the mobile console 13 pop up a warning of a redundant fault.

And (3) failure 2: in the operation process of the equipment, any one network cable in the ring network is pulled out manually.

At this moment, the ring network is interrupted, the system is connected with the redundant standby PLC11 through standby connection, the equipment cannot stop running, and the touch screen 1, the remote data operation and maintenance center 2, the main control console 12 and the mobile control console 13 pop up redundant faults to request a warning of maintenance.

Failure 3: and in the operation process of the equipment, the first exchanger 5 or the second exchanger 7 in the ring network is powered off.

And 4, fault: one of the two synchronized fiber optic cables is interrupted during operation of the apparatus.

And at the moment, only one redundant connection is left in the system, the equipment cannot stop running, and the touch screen 1, the remote data operation and maintenance center 2, the main control console 12 and the mobile control console 13 give a warning of redundant faults.

And (5) failure: in the operation process of the equipment, the IO slave station 6 in the system breaks down.

If the device is associated with the first switch 5, the device stops functioning; if the equipment is not associated with the first switch 5, the equipment can operate normally, and the touch screen 1, the remote data operation and maintenance center 2, the main control console 12 and the mobile control console 13 pop up a warning of redundant faults.

The foregoing is a preferred embodiment of the present invention for the purpose of illustrating the utility model, and it is therefore contemplated that modifications, equivalents and improvements will readily occur to those skilled in the art, which modifications are within the spirit and scope of the utility model.

Claims

1. A dual redundant control system for stage machinery, characterized by: the system comprises an on-board equipment main control CPU, a redundant equipment PLC, a redundant main PLC, an IO slave station, an under-board equipment main control CPU and a first switch which are connected through a ring network, wherein PRODINET communication is adopted;

2. The dual redundant control system for stage machinery according to claim 1, wherein: and a second switch is connected between two adjacent IO slave stations.

3. The dual redundant control system for stage machinery according to claim 1, wherein: the human-computer interaction unit comprises a touch screen, a remote data operation and maintenance center, a main control console and a mobile control console, and the touch screen, the remote data operation and maintenance center, the main control console and the mobile control console are respectively connected with the first switch through industrial Ethernet.