Grab crane PLC control system 5G wireless communication loop and method

Abstract

The invention relates to a 5G wireless communication loop and method for a PLC control system of a grab crane, and the loop comprises a first DP communication protocol coupler, a first 5G wireless network access device, a second 5G wireless network access device, a second DP communication protocol coupler, a third 5G wireless network access device, and a third DP communication protocol coupler. The first DP communication protocol coupler, the first 5G wireless network access device, the second 5G wireless network access device and the second DP communication protocol coupler form a grab bucket crane cart remote control 5G wireless network, and the first DP communication protocol coupler, the first 5G wireless network access device, the third 5G wireless network access device, the second 5G wireless network access device and the second DP communication protocol coupler form a grab bucket crane cart remote control 5G wireless network. The third DP communication protocol coupler 16 forms a grab crane trolley remote control 5G wireless network; according to the invention, communication between the control instruction and the detection signal can be realized.

Description

Technical Field

[0001] The present application relates to the technical field of PLC control of grab cranes, and in particular to a 5G wireless communication circuit and method for a PLC control system of a grab crane. Background Art

[0002] Grab crane is an important tool and equipment for mechanization and automation of production process in modern industrial production and lifting transportation, and is widely used in industries such as steel, petroleum, chemical industry, and electric power. The grab crane system consists of a trolley, a car, a lifting device, a trolley / trolley trolley pulley device, a control system, and other parts. The trolley / trolley trolley pulley device mainly consists of a trolley pulley track, a trolley pulley, a trolley cable, and a trolley optical cable. The trolley cable mainly provides power for the crane system.

[0003] The grab crane control system mainly adopts PLC control and is realized through an optical cable loop. The optical cable loop is mainly composed of an optical cable transceiver and a towed optical cable, which not only provides a communication link for the grab crane control system, but also provides a communication link for other required equipment systems of the grab crane system.

[0004] The towing optical cable and towing electric cable are fixed on the towing optical cable pulley, and the towing pulley is hung on the towing pulley track; when the grab crane is operating, the crane pulls the towing pulley to move on the towing pulley track, and the towing pulley pulls the towing optical cable and towing electric cable to move synchronously. However, when the grab crane is operating, the communication optical cable of the trolley / cart rubs back and forth with other towing cables during the movement, causing the outer skin of the communication optical cable to be worn and damaged, and the communication between the central processing unit of the PLC system and the remote IO station is interrupted, resulting in a communication failure of the lifting equipment control system, and the grab crane is shut down due to a failure, affecting the equipment safety and factory production efficiency, and in severe cases causing the factory to stop production. In addition, when the grab crane is operating, the communication optical cable of the trolley / cart collides back and forth with other towing cables and mechanical equipment during the movement, causing the core of the communication optical cable to break, and the communication optical cable cannot transmit the optical signal of the control system, which will also cause the communication between the central processing unit of the PLC system and the remote IO station to be interrupted, resulting in a communication failure of the lifting equipment control system and the grab crane is shut down due to a failure.

[0005] When the towed optical cable of a large or small car is damaged, it must be replaced. The optical cable is long, the replacement cost is high and the workload is large. The grab crane equipment is installed in an environment with large dust and toxic and harmful gases. Long-term replacement of the towed optical cable may be harmful to the human body. At the same time, the installation position of the towed optical cable is high, and the replacement operation of the towed optical cable is an aerial operation. The maintenance channel of the grab crane has a small space, the construction is difficult, and there are great safety hazards. Summary of the invention

[0006] In order to solve the problems of the prior art, the present application proposes a 5G wireless communication circuit and method for a grab crane PLC control system, and deploys a low-latency, high-bandwidth 5G wireless network communication circuit between the grab crane PLC system and the remote control station to establish a communication connection between the grab crane PLC system and large and small vehicles, thereby improving the operating stability and reliability of the machine PLC communication system.

[0007] Specifically, the present application provides a 5G wireless communication circuit of a PLC control system of a grab crane, wherein the grab crane includes a trolley and a small trolley, including:

[0008] A first DP communication protocol coupler, used for receiving a first control instruction and a second control instruction issued by the CPU of the PLC control system and converting the first control instruction into a first industrial Ethernet protocol signal and the second control instruction into a second industrial Ethernet protocol signal;

[0009] a first 5G wireless network access device, connected to the first DP communication protocol coupler, for receiving the first industrial Ethernet protocol signal and the second industrial Ethernet protocol signal and sending the first industrial Ethernet protocol signal and the second industrial Ethernet protocol signal in the form of 5G signals;

[0010] A second 5G wireless network access device is provided on the vehicle and connected to the first 5G wireless network access device, and is used to receive the first industrial Ethernet protocol signal sent by the first 5G wireless network access device;

[0011] A second DP communication protocol coupler is provided on the vehicle and connected to the second 5G wireless network access device, and is used to receive the first industrial Ethernet protocol signal and convert it into the first control instruction to control the vehicle;

[0012] A third 5G wireless network access device, which is arranged on the trolley and connected to the first 5G wireless network access device, and is used to receive the second industrial Ethernet protocol signal sent by the first 5G wireless network access device; and

[0013] A third DP communication protocol coupler is provided on the trolley and connected to the third 5G wireless network access device, and is used to receive the second industrial Ethernet protocol signal and convert it into the second control instruction to control the trolley;

[0014] Among them, the second DP communication protocol coupler is also used to receive the first monitoring signal of the large vehicle and convert the first monitoring signal into a third industrial Ethernet protocol signal; the second 5G wireless network access device is also used to receive the third industrial Ethernet protocol signal and send the third industrial Ethernet protocol signal in the form of a 5G signal; the first 5G wireless network access device is also used to receive the third industrial Ethernet protocol signal and upload it to the first DP communication protocol coupler; the first DP communication protocol coupler is also used to convert the third industrial Ethernet protocol signal into the first monitoring signal and upload it to the CPU of the PLC control system;

[0015] The third DP communication protocol coupler is also used to receive the second monitoring signal of the vehicle and convert the second monitoring signal into a fourth industrial Ethernet protocol signal; the third 5G wireless network access device is also used to receive the fourth industrial Ethernet protocol signal and send the fourth industrial Ethernet protocol signal in the form of a 5G signal; the first 5G wireless network access device is also used to receive the fourth industrial Ethernet protocol signal and upload it to the first DP communication protocol coupler; the first DP communication protocol coupler is also used to convert the fourth industrial Ethernet protocol signal into the second monitoring signal and upload it to the CPU of the PLC control system.

[0016] As a preferred solution, the first 5G wireless network access device and the first DP communication protocol coupler are installed on the wall of the operating workshop of the grab crane.

[0017] As a preferred solution, the first 5G wireless network access device is connected to the first DP communication protocol coupler via an RJ45 network cable;

[0018] The second 5G wireless network access device is connected to the second DP communication protocol coupler via an RJ45 network cable;

[0019] The third 5G wireless network access device is connected to the third DP communication protocol coupler via an RJ45 network cable.

[0020] As a preferred solution, the second 5G wireless network access device and the second DP communication protocol coupler are installed in the remote PLC-I0 station of the vehicle;

[0021] The third 5G wireless network access device and the third DP communication protocol coupler are installed in the remote PLC-I0 station of the vehicle.

[0022] As a preferred solution, the first 5G wireless network access device and the second 5G wireless network access device are connected via a 5 GHz frequency band wireless network;

[0023] The first 5G wireless network access device and the third 5G wireless network access device are connected via a 5GHz frequency band wireless network.

[0024] As a preferred solution, the first control instruction, the second control instruction, the first monitoring signal and the second monitoring signal are all Profibus-DP communication protocol signals.

[0025] As a preferred solution, the first control instructions include switch output control instructions and analog output control instructions of the equipment on the vehicle.

[0026] As a preferred solution, the first monitoring signal includes a switch input signal and an analog input signal of the equipment on the vehicle.

[0027] In addition, the present application also provides a method for applying to the 5G wireless communication circuit of the grab crane PLC control system as described above, comprising:

[0028] The first DP communication protocol coupler receives the first control instruction issued by the CPU of the PLC control system and converts the first control instruction into a first industrial Ethernet protocol signal;

[0029] The first 5G wireless network access device receives the first industrial Ethernet protocol signal and sends the first industrial Ethernet protocol signal in the form of a 5G signal;

[0030] The second 5G wireless network access device on the vehicle receives the first industrial Ethernet protocol signal sent by the first 5G wireless network access device;

[0031] The second DP communication protocol coupler on the trolley receives the first industrial Ethernet protocol signal and converts it into the first control instruction to control the trolley;

[0032] The second DP communication protocol coupler receives the first monitoring signal of the vehicle and converts the first monitoring signal into a third industrial Ethernet protocol signal;

[0033] The second 5G wireless network access device receives the third industrial Ethernet protocol signal and sends the third industrial Ethernet protocol signal in the form of a 5G signal;

[0034] The first 5G wireless network access device receives the third industrial Ethernet protocol signal and uploads it to the first DP communication protocol coupler; and

[0035] The first DP communication protocol coupler converts the third industrial Ethernet protocol signal into the first monitoring signal and uploads it to the CPU of the PLC control system.

[0036] As a preferred solution, it also includes:

[0037] The first DP communication protocol coupler receives the second control instruction issued by the CPU of the PLC control system and converts the second control instruction into a second industrial Ethernet protocol signal;

[0038] The first 5G wireless network access device receives the second industrial Ethernet protocol signal and sends the second industrial Ethernet protocol signal in the form of a 5G signal;

[0039] The third 5G wireless network access device on the car receives the second industrial Ethernet protocol signal sent by the first 5G wireless network access device;

[0040] The third DP communication protocol coupler on the trolley receives the second industrial Ethernet protocol signal and converts it into the second control instruction to control the trolley;

[0041] The third DP communication protocol coupler receives the second monitoring signal of the vehicle and converts the second monitoring signal into a fourth industrial Ethernet protocol signal;

[0042] The third 5G wireless network access device receives the fourth industrial Ethernet protocol signal and sends the fourth industrial Ethernet protocol signal in the form of a 5G signal;

[0043] The first 5G wireless network access device receives the fourth industrial Ethernet protocol signal and uploads it to the first DP communication protocol coupler; and

[0044] The first DP communication protocol coupler converts the fourth industrial Ethernet protocol signal into the second monitoring signal and uploads it to the CPU of the PLC control system.

[0045] Compared with the prior art, this application has the following beneficial effects:

[0046] The present application provides a 5G wireless communication circuit and method for a grab crane PLC control system, in which a low-latency, high-bandwidth 5G wireless network communication circuit is deployed in the grab crane PLC system to establish a communication connection between the grab crane PLC system central processing unit and a large vehicle and a small vehicle, thereby improving the operational stability and reliability of the grab crane PLC communication system, ensuring continuous and stable operation of the grab crane system, and reducing system operation and maintenance costs; increasing the time for safe and stable operation of the enterprise, ensuring the enterprise's production and economic benefits throughout the year; reducing the frequency of personnel entering harsh environments to work, and reducing the impact on personnel's physical health; avoiding the possibility of environmental gas spillage caused by personnel entering harsh environments to work, and reducing environmental risks; reducing the frequency of personnel working at high altitudes, and reducing the safety risk of personnel falling from high altitudes. BRIEF DESCRIPTION OF THE DRAWINGS

[0047] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0048] The structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification so as to facilitate understanding and reading by persons familiar with this technology. They are not used to limit the conditions under which this application can be implemented, and therefore have no substantive technical significance. Any structural modification, change in proportion or adjustment of size, without affecting the effects and purposes that can be achieved by this application, should still fall within the scope of the technical contents disclosed in this application.

[0049] Figure 1 It is a schematic diagram of the overall framework of the 5G wireless communication circuit of the grab crane PLC control system in the embodiment of the present application;

[0050] Figure 2 This is the process of this application method Figure 1 ;

[0051] Figure 3 This is the process of this application method Figure 2 ;

[0052] Figure 4 This is a schematic diagram of the signal communication circuit from the vehicle to the CPU of the present application;

[0053] Figure 5 This is a schematic diagram of the signal communication circuit from the CPU to the vehicle in this application;

[0054] Figure 6 This is a schematic diagram of the signal communication circuit from the vehicle to the CPU of this application;

[0055] Figure 7 This is a schematic diagram of the signal communication circuit from the CPU to the car in this application. DETAILED DESCRIPTION

[0056] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application.

[0057] In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms and the like is based on the orientation or positional relationship shown in the accompanying drawings, which is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device, element, module, system, platform or device referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. The following description of the present application is only understood as a description of individual embodiments of the technical solution of the present application. Other embodiments are not reflected in the following description, but it does not mean that the present application excludes these other embodiments, and the technical solution of the present application is not limited to the specific implementation methods described below, and the protection scope of the present application is not limited to only the specific implementation methods described below. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work should fall within the scope of protection of the present application.

[0058] It should be noted that if the terms "first", "second", etc. appear in the specification and claims of the present application and the above-mentioned drawings, the description is only used to distinguish similar objects, and is not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a system, product or device comprising a series of units or modules or modules or components is not necessarily limited to those units or modules or modules or components clearly listed, but may include other components that are not clearly listed or inherent to these systems, products or devices.

[0059] The technical solution of the present application is further explained below with reference to the accompanying drawings and through specific implementation methods.

[0060] In some embodiments, Figure 1 As shown, the present application provides a 5G wireless communication loop 1 of a grab crane PLC control system, wherein the grab crane includes a trolley 01 and a trolley 02, including an RJ45 network cable; a first DP communication protocol coupler 11; a first 5G wireless network access device 12; a second 5G wireless network access device 13; a second DP communication protocol coupler 14, a third 5G wireless network access device 15 and a third DP communication protocol coupler 16.

[0061] Specifically, the first 5G wireless network access device 11 and the first DP communication protocol coupler 12 can be installed on the wall of the operation workshop of the grab crane, or installed at other locations in the operation workshop of the grab crane for fixed installation. The first 5G wireless network access device 11 is connected to the first DP communication protocol coupler 12 via an RJ45 network cable.

[0062] The first DP communication protocol coupler 11 is used to receive the first control instruction and the second control instruction issued by the CPU00 of the PLC control system and convert the first control instruction into a first industrial Ethernet protocol signal and the second control instruction into a second industrial Ethernet protocol signal.

[0063] The first 5G wireless network access device 12 is connected to the first DP communication protocol coupler 11, and the first 5G wireless network access device 12 is used to receive the first industrial Ethernet protocol signal and the second industrial Ethernet protocol signal and send the first industrial Ethernet protocol signal and the second industrial Ethernet protocol signal in the form of 5G signals.

[0064] The second 5G wireless network access device 13 and the second DP communication protocol coupler 14 can be installed in the remote PLC-10 station of the vehicle 01. The second 5G wireless network access device 13 is connected to the second DP communication protocol coupler 14 via an RJ45 network cable.

[0065] The second 5G wireless network access device 13 is connected to the first 5G wireless network access device 12, and is used to receive the first industrial Ethernet protocol signal sent by the first 5G wireless network access device 12; specifically, the first 5G wireless network access device 12 and the second 5G wireless network access device 13 are connected via a 5GHz frequency band wireless network.

[0066] The second DP communication protocol coupler 14 is used to receive the first industrial Ethernet protocol signal and convert it into the first control instruction to control the vehicle 01.

[0067] The third 5G wireless network access device 15 and the third DP communication protocol coupler 16 can be installed in the remote PLC-IO station of the car 02. The third 5G wireless network access device 15 is connected to the third DP communication protocol coupler 16 via an RJ45 network cable.

[0068] The third 5G wireless network access device 15 is connected to the first 5G wireless network access device 12, and is used to receive the second industrial Ethernet protocol signal sent by the first 5G wireless network access device 12; specifically, the first 5G wireless network access device 12 and the third 5G wireless network access device 15 are connected via a 5GHz frequency band wireless network.

[0069] The third DP communication protocol coupler 16 is connected to the third 5G wireless network access device 15, and is used to receive the second industrial Ethernet protocol signal and convert it into the second control instruction to control the vehicle 02.

[0070] In addition, the second DP communication protocol coupler 14 is also used to receive the first monitoring signal of the large vehicle 01 and convert the first monitoring signal into a third industrial Ethernet protocol signal; the second 5G wireless network access device 13 is also used to receive the third industrial Ethernet protocol signal and send the third industrial Ethernet protocol signal in the form of a 5G signal; the first 5G wireless network access device 12 is also used to receive the third industrial Ethernet protocol signal and upload it to the first DP communication protocol coupler 11; the first DP communication protocol coupler 11 is also used to convert the third industrial Ethernet protocol signal into the first monitoring signal and upload it to the CPU 00 of the PLC control system;

[0071] The third DP communication protocol coupler 16 is also used to receive the second monitoring signal of the vehicle 02 and convert the second monitoring signal into a fourth industrial Ethernet protocol signal; the third 5G wireless network access device 15 is also used to receive the fourth industrial Ethernet protocol signal and send the fourth industrial Ethernet protocol signal in the form of a 5G signal; the first 5G wireless network access device 12 is also used to receive the fourth industrial Ethernet protocol signal and upload it to the first DP communication protocol coupler 11; the first DP communication protocol coupler 11 is also used to convert the fourth industrial Ethernet protocol signal into the second monitoring signal and upload it to the CPU00 of the PLC control system.

[0072] Specifically, the first DP communication protocol coupler 11, the first 5G wireless network access device 12, the second 5G wireless network access device 13, the second DP communication protocol coupler 14, and the RJ45 network cable constitute a grab crane trolley remote control 5G wireless network to realize the communication of control instructions and detection signals.

[0073] The first DP communication protocol coupler 11, the first 5G wireless network access device 12, the third 5G wireless network access device 15; the third DP communication protocol coupler 16, and the RJ45 network cable constitute a grab crane trolley remote control 5G wireless network to realize the communication of control instructions and detection signals.

[0074] In some embodiments, the first control instruction, the second control instruction, the first monitoring signal and the second monitoring signal are all Profibus-DP communication protocol signals, so as to realize the conversion between industrial control communication protocols such as Profibus-DP of grab crane PLC system and industrial Ethernet protocol, and establish communication between control equipment in grab crane control room and large and small vehicles.

[0075] In some embodiments, the first control instruction includes the switch output control instruction and the analog output control instruction of the device on the large vehicle 01; the second control instruction includes the switch output control instruction and the analog output control instruction of the device on the small vehicle 02

[0076] In some embodiments, the first monitoring signal includes the switch input signal and the analog input signal of the equipment on the large vehicle 01; the second monitoring signal includes the switch input signal and the analog input signal of the equipment on the small vehicle 02.

[0077] In some embodiments, Figure 2 As shown, the present application also provides a method for applying the grab crane PLC control system 5G wireless communication circuit 1 as described above, comprising:

[0078] S11: The first DP communication protocol coupler 11 receives the first control instruction issued by the CPU 00 of the PLC control system and converts the first control instruction into a first industrial Ethernet protocol signal;

[0079] S12: The first 5G wireless network access device 12 receives the first industrial Ethernet protocol signal and sends the first industrial Ethernet protocol signal in the form of a 5G signal;

[0080] S13: The second 5G wireless network access device 13 on the vehicle 01 receives the first industrial Ethernet protocol signal sent by the first 5G wireless network access device 12;

[0081] S14: The second DP communication protocol coupler 14 on the vehicle 01 receives the first industrial Ethernet protocol signal and converts it into the first control instruction to control the vehicle 01;

[0082] S15: The second DP communication protocol coupler 14 receives the first monitoring signal of the vehicle 01 and converts the first monitoring signal into a third industrial Ethernet protocol signal;

[0083] S16: The second 5G wireless network access device 13 receives the third industrial Ethernet protocol signal and sends the third industrial Ethernet protocol signal in the form of a 5G signal;

[0084] S17: The first 5G wireless network access device 12 receives the third industrial Ethernet protocol signal and uploads it to the first DP communication protocol coupler 11; and

[0085] S18: The first DP communication protocol coupler 11 converts the third industrial Ethernet protocol signal into the first monitoring signal and uploads it to the CPU 00 of the PLC control system.

[0086] In some embodiments, it also includes:

[0087] S21: The first DP communication protocol coupler 11 receives the second control instruction issued by the CPU 00 of the PLC control system and converts the second control instruction into a second industrial Ethernet protocol signal;

[0088] S22: The first 5G wireless network access device 12 receives the second industrial Ethernet protocol signal and sends the second industrial Ethernet protocol signal in the form of a 5G signal;

[0089] S23: The third 5G wireless network access device 15 on the car 02 receives the second industrial Ethernet protocol signal sent by the first 5G wireless network access device 12;

[0090] S24: The third DP communication protocol coupler 16 on the trolley 02 receives the second industrial Ethernet protocol signal and converts it into the second control instruction to control the trolley 02;

[0091] S25: The third DP communication protocol coupler 16 receives the second monitoring signal of the vehicle 02 and converts the second monitoring signal into a fourth industrial Ethernet protocol signal;

[0092] S26: The third 5G wireless network access device 15 receives the fourth industrial Ethernet protocol signal and sends the fourth industrial Ethernet protocol signal in the form of a 5G signal;

[0093] S27: The first 5G wireless network access device 12 receives the fourth industrial Ethernet protocol signal and uploads it to the first DP communication protocol coupler 11; and

[0094] S28: The first DP communication protocol coupler 11 converts the fourth industrial Ethernet protocol signal into the second monitoring signal and uploads it to the CPU 00 of the PLC control system.

[0095] Specifically, the first DP communication coupler 11 works as follows: the first DP communication protocol coupler 11 receives the Profibus-DP communication protocol control command signal of CPU00, converts the Profibus-DP communication protocol signal control command signal into an industrial Ethernet protocol signal and sends it to the first 5G wireless network access device 12; when the monitoring signal of the vehicle 01 is uploaded to CPU 00, the first DP communication protocol coupler 11 receives the industrial Ethernet protocol signal of the first 5G wireless network device 12, converts the industrial Ethernet protocol control command signal into a Profibus-DP communication protocol signal and uploads it to CPU00.

[0096] The second DP communication coupler 14 works as follows: when CPU00 sends a control instruction to the vehicle, the second DP communication protocol coupler 14 receives the industrial Ethernet protocol control instruction signal of the second 5G wireless device 13, converts the industrial Ethernet protocol control instruction signal into a Profibus-DP communication protocol signal and sends it to the vehicle 01; when the monitoring signal of the vehicle 01 is uploaded to CPU00, the second DP communication protocol coupler 14 receives the Profibus-DP communication protocol signal, converts the Profibus-DP communication protocol signal into an industrial Ethernet protocol signal and uploads it to the second 5G wireless network device 13.

[0097] The third DP communication coupler 56 works as follows: when CPU00 sends a control instruction to the cart 02, the third DP communication protocol coupler 16 receives the industrial Ethernet protocol control instruction signal of the third 5G wireless device 15, converts the industrial Ethernet protocol control instruction signal into a Profibus-DP communication protocol signal and sends it to the cart; when the monitoring signal of the cart is uploaded to CPU00, the third DP communication protocol coupler 16 receives the Profibus-DP communication protocol signal, converts the Profibus-DP communication protocol signal into an industrial Ethernet protocol signal and uploads it to the third 5G wireless network device 15.

[0098] The signal interaction circuits between the large vehicle 01, the small vehicle 02 and the CPU 00 are as follows:

[0099] like Figure 4As shown, the switch input signals and analog input signals of the field equipment of the large vehicle 01 are collected and uploaded to the CPU 00 of the PLC system through the 5G industrial control wireless network communication loop 1. The signal communication loop is: the Profibus-DP communication protocol signal of the large vehicle → the 5G wireless communication Ethernet protocol signal of the second DP communication protocol coupler 14 → the 5G wireless communication Ethernet protocol signal of the second 5G wireless network access device 13 → the 5G wireless communication Ethernet protocol signal of the first 5G wireless network access device 12 → the Profibus-DP communication protocol signal of the first DP communication protocol coupler 11 → CPU00.

[0100] like Figure 5 As shown, the signal communication circuits of the switch output and analog output control command signals of the CPU00 reaching the truck through the 5G wireless network communication circuit 1 are: Profibus-DP communication protocol signal of CPU00 → 5G wireless communication Ethernet protocol signal of the first DP communication coupler 11 → 5G wireless communication Ethernet protocol signal of the first 5G wireless network access device 12 → 5G wireless communication Ethernet protocol signal of the second 5G wireless network access device 13 → Profibus-DP communication protocol signal of the second DP communication protocol coupler 14 → truck.

[0101] like Figure 6 As shown, the car 02 collects the switch input signals and analog input signals of the field equipment, and uploads them to the CPU00 of the PLC system through the 5G industrial control wireless network communication loop 1. The signal upload communication loop is: Profibus-DP communication protocol signal of the car 02 → 5G wireless communication Ethernet protocol signal of the third DP communication protocol coupler 16 → 5G wireless communication Ethernet protocol signal of the third 5G wireless network access device 15 → 5G wireless communication Ethernet protocol signal of the first 5G wireless network access device 12 → Profibus-DP communication protocol signal of the first DP communication protocol coupler 11 → CPU00.

[0102] like Figure 7 As shown, the switch output and analog output control command signals of the CPU00 are transmitted to the trolley through the 5G wireless network communication circuit 1 in the following order: Profibus-DP communication protocol signal of CPU00 → 5G wireless communication Ethernet protocol signal of the first DP communication protocol coupler 11 → 5G wireless communication Ethernet protocol signal of the first 5G wireless network access device 12 → 5G wireless communication Ethernet protocol signal of the third 5G wireless network access device 14 → Profibus-DP communication protocol signal of the third DP communication protocol coupler 16 → trolley.

[0103] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0104] The embodiments described above only express several implementation methods of the present application, which are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some of the technical features therein by equivalents. These modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application. For ordinary technicians in this field, they can make several modifications and improvements without departing from the concept of the present application, which all belong to the protection scope of the present application.

Claims

1. A 5G wireless communication circuit for a PLC control system of a grab crane, wherein the grab crane comprises a large vehicle and a small vehicle, and is characterized in that: include: A first DP communication protocol coupler, used for receiving a first control instruction and a second control instruction issued by the CPU of the PLC control system and converting the first control instruction into a first industrial Ethernet protocol signal and the second control instruction into a second industrial Ethernet protocol signal; a first 5G wireless network access device, connected to the first DP communication protocol coupler, for receiving the first industrial Ethernet protocol signal and the second industrial Ethernet protocol signal and sending the first industrial Ethernet protocol signal and the second industrial Ethernet protocol signal in the form of 5G signals; A second 5G wireless network access device is provided on the vehicle and connected to the first 5G wireless network access device, and is used to receive the first industrial Ethernet protocol signal sent by the first 5G wireless network access device; A second DP communication protocol coupler is provided on the vehicle and connected to the second 5G wireless network access device, and is used to receive the first industrial Ethernet protocol signal and convert it into the first control instruction to control the vehicle; A third 5G wireless network access device, which is arranged on the trolley and connected to the first 5G wireless network access device, and is used to receive the second industrial Ethernet protocol signal sent by the first 5G wireless network access device; as well as A third DP communication protocol coupler is provided on the trolley and connected to the third 5G wireless network access device, and is used to receive the second industrial Ethernet protocol signal and convert it into the second control instruction to control the trolley; Among them, the second DP communication protocol coupler is also used to receive the first monitoring signal of the large vehicle and convert the first monitoring signal into a third industrial Ethernet protocol signal; the second 5G wireless network access device is also used to receive the third industrial Ethernet protocol signal and send the third industrial Ethernet protocol signal in the form of a 5G signal; the first 5G wireless network access device is also used to receive the third industrial Ethernet protocol signal and upload it to the first DP communication protocol coupler; the first DP communication protocol coupler is also used to convert the third industrial Ethernet protocol signal into the first monitoring signal and upload it to the CPU of the PLC control system; The third DP communication protocol coupler is also used to receive the second monitoring signal of the vehicle and convert the second monitoring signal into a fourth industrial Ethernet protocol signal; the third 5G wireless network access device is also used to receive the fourth industrial Ethernet protocol signal and send the fourth industrial Ethernet protocol signal in the form of a 5G signal; the first 5G wireless network access device is also used to receive the fourth industrial Ethernet protocol signal and upload it to the first DP communication protocol coupler; the first DP communication protocol coupler is also used to convert the fourth industrial Ethernet protocol signal into the second monitoring signal and upload it to the CPU of the PLC control system.

2. The grab crane PLC control system 5G wireless communication circuit according to claim 1 is characterized by: The first 5G wireless network access device and the first DP communication protocol coupler are installed on the wall of the operating workshop of the grab crane.

3. The grab crane PLC control system 5G wireless communication circuit according to claim 1 is characterized in that: The first 5G wireless network access device is connected to the first DP communication protocol coupler via an RJ45 network cable; The second 5G wireless network access device is connected to the second DP communication protocol coupler via an RJ45 network cable; The third 5G wireless network access device is connected to the third DP communication protocol coupler via an RJ45 network cable.

4. The grab crane PLC control system 5G wireless communication circuit according to claim 1 is characterized in that: The second 5G wireless network access device and the second DP communication protocol coupler are installed in the remote PLC-IO station of the vehicle; The third 5G wireless network access device and the third DP communication protocol coupler are installed in the remote PLC-IO station of the vehicle.

5. The grab crane PLC control system 5G wireless communication circuit according to claim 1 is characterized by: The first 5G wireless network access device and the second 5G wireless network access device are connected via a 5 GHz frequency band wireless network; The first 5G wireless network access device and the third 5G wireless network access device are connected via a 5GHz frequency band wireless network.

6. The grab crane PLC control system 5G wireless communication circuit according to claim 1 is characterized by: The first control instruction, the second control instruction, the first monitoring signal and the second monitoring signal are all Profibus-DP communication protocol signals.

7. The grab crane PLC control system 5G wireless communication circuit according to claim 6 is characterized by: The first control instructions include switch output control instructions and analog output control instructions of the equipment on the vehicle.

8. The grab crane PLC control system 5G wireless communication circuit according to claim 7 is characterized in that: The first monitoring signal includes a switch quantity input signal and an analog quantity input signal of the equipment on the vehicle.

9. A method applied to a 5G wireless communication circuit of a grab crane PLC control system as claimed in any one of claims 1 to 8, characterized in that: include: The first DP communication protocol coupler receives the first control instruction issued by the CPU of the PLC control system and converts the first control instruction into a first industrial Ethernet protocol signal; The first 5G wireless network access device receives the first industrial Ethernet protocol signal and sends the first industrial Ethernet protocol signal in the form of a 5G signal; The second 5G wireless network access device on the vehicle receives the first industrial Ethernet protocol signal sent by the first 5G wireless network access device; The second DP communication protocol coupler on the trolley receives the first industrial Ethernet protocol signal and converts it into the first control instruction to control the trolley; The second DP communication protocol coupler receives the first monitoring signal of the vehicle and converts the first monitoring signal into a third industrial Ethernet protocol signal; The second 5G wireless network access device receives the third industrial Ethernet protocol signal and sends the third industrial Ethernet protocol signal in the form of a 5G signal; The first 5G wireless network access device receives the third industrial Ethernet protocol signal and uploads it to the first DP communication protocol coupler; and The first DP communication protocol coupler converts the third industrial Ethernet protocol signal into the first monitoring signal and uploads it to the CPU of the PLC control system.

10. The method according to claim 9, characterized in that Also includes: The first DP communication protocol coupler receives the second control instruction issued by the CPU of the PLC control system and converts the second control instruction into a second industrial Ethernet protocol signal; The first 5G wireless network access device receives the second industrial Ethernet protocol signal and sends the second industrial Ethernet protocol signal in the form of a 5G signal; The third 5G wireless network access device on the car receives the second industrial Ethernet protocol signal sent by the first 5G wireless network access device; The third DP communication protocol coupler on the trolley receives the second industrial Ethernet protocol signal and converts it into the second control instruction to control the trolley; The third DP communication protocol coupler receives the second monitoring signal of the vehicle and converts the second monitoring signal into a fourth industrial Ethernet protocol signal; The third 5G wireless network access device receives the fourth industrial Ethernet protocol signal and sends the fourth industrial Ethernet protocol signal in the form of a 5G signal; The first 5G wireless network access device receives the fourth industrial Ethernet protocol signal and uploads it to the first DP communication protocol coupler; and The first DP communication protocol coupler converts the fourth industrial Ethernet protocol signal into the second monitoring signal and uploads it to the CPU of the PLC control system.

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