Logistics conveying distributed airborne frequency conversion IO all-in-one machine system

Abstract

The invention relates to a logistics conveying distributed airborne frequency conversion IO all-in-one machine system, which is applied to the technical field of logistics conveying control, and is characterized in that a remote IO and a frequency converter are integrated into all-in-one machines in a centralized manner to realize local acquisition and remote control of a logistics conveying machine system, and each logistics conveying device is equipped with one all-in-one machine; a frequency converter positive and negative rotation control instruction is connected through the interior of the all-in-one machine, wiring is not needed, factory preassembling and plug-in type quick connection can be achieved, and compared with an existing scheme that a frequency converter and remote IO are concentrated to a control cabinet, only serial connection of serial port cables between devices and network cable wiring of a network cable concentrator and a main control CPU need to be completed in field wiring, and the cost is reduced. The field workload is greatly reduced, so that the field wiring debugging work efficiency is improved, and the field error rate is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of logistics transportation control, and in particular to a distributed airborne variable frequency IO integrated system for logistics transportation. Background Art

[0002] The remote distributed IO control mode has been widely used in the field of industrial control since its invention. Since the 21st century, with the rapid development of automated logistics technology in China, various distributed IO modules have also been widely used in the automated logistics industry. However, due to the late start of domestic automated control and other comprehensive reasons, the airborne distributed IO product brands are only available from foreign manufacturers such as Germany and Japan.

[0003] At present, the control mode commonly used in the conveying system in the field of automated logistics and warehousing is distributed IO plus inverter to perform the slow start and slow stop function of the conveyor motor. There are many brands of inverters, which are generally concentrated in the electric control cabinet. The number of inverters that can be accommodated in the electric control cabinet often changes, and the cabinets are large and small. If the size is unified, there will be space waste and it is impossible to achieve standard unification. At the same time, since the IO and inverter of a certain area are concentrated in the control cabinet, it is impossible to achieve factory standard pre-installation. The on-site cables need to be laid on-site, and the lines need to be connected from the electric control cabinet. The lines are relatively long, the on-site construction wiring workload is large, and the difficulty is relatively high. It usually exceeds the overall installation level of the on-site installation team, the wiring error rate is high, and rework and rectification costs are generated; a small number of sites use the control mode of the German Pepperl+Fuchs ASI bus or the Japanese Mitsubishi cclink bus onboard IO, but such solutions still require the use of inverters, and the wiring work of connecting the IO points and the control signal lines of the inverters cannot be avoided. Summary of the invention

[0004] In view of this, the purpose of the present invention is to provide a distributed airborne variable frequency IO all-in-one system for logistics transportation, so as to solve the problem that in the existing method, the distributed IO and the frequency converter are separately used to perform the slow start and slow stop functions of the conveyor motor. There are many brands of frequency converters, which are generally concentrated in the electric control cabinet. The number of frequency converters that can be accommodated in the electric control cabinet often changes, and the cabinets are large and small. If the size is unified, there will be a waste of space and it is impossible to achieve standard unification. At the same time, since the IO and frequency converter of a certain area are concentrated in the control cabinet, it is impossible to achieve factory standard pre-installation. The on-site cables need to be laid on-site, and the lines need to be connected from the electric control cabinet. The lines are relatively long, the on-site construction wiring workload is large, and the difficulty is relatively high.

[0005] According to a first aspect of an embodiment of the present invention, a distributed airborne variable frequency IO integrated system for logistics transportation is provided, the system comprising:

[0006] An all-in-one machine, wherein a remote IO module and a frequency converter are integrated in the all-in-one machine;

[0007] The signal input port of the integrated machine is connected to the sensor of the conveyor for collecting sensor signals, and the signal sending port of the integrated machine is connected to the conversion gateway module for sending the collected sensor signals to the conversion gateway module, and the conversion gateway module is used to integrate the received sensor signals and send them to the controller;

[0008] After receiving the sensor signal, the controller sends a control instruction to the conversion gateway module, and the conversion gateway module sends the control instruction to the signal receiving end of the all-in-one machine. The all-in-one machine forwards the received control instruction to the internal frequency converter, and the frequency converter drives the on-site motor according to the control instruction.

[0009] Preferably,

[0010] The controller is connected to one or more conversion gateway modules, each conversion gateway module is connected to multiple integrated machines, and the multiple integrated machines are connected in series with each other through the Ethernet protocol and then connected to one conversion gateway module.

[0011] Preferably,

[0012] The conversion gateway module receives sensor signals sent by multiple integrated machines connected in series, integrates the sensor signals, and sends them to the controller at a fixed period.

[0013] Preferably,

[0014] The controller sends control instructions to the conversion gateway module at a fixed period, and the conversion gateway module distributes the control instructions to each integrated machine connected in series.

[0015] Preferably,

[0016] The signal transmission between the integrated machine and the conversion gateway module, and between the conversion gateway module and the controller module uses the TCP / IP protocol as the underlying transmission protocol.

[0017] Preferably,

[0018] When the integrated machine sends a sensor signal to the conversion gateway module, it also sends its own unique ID. The conversion gateway module binds the sensor signals sent by multiple integrated machines connected in series with the corresponding IDs and sends them to the controller.

[0019] Preferably,

[0020] The controller generates a control instruction through logical judgment based on the sensor signal, binds the generated control instruction with the ID of the received sensor signal and sends it to the conversion gateway module. The conversion gateway module forwards the control instruction to the corresponding all-in-one machine based on the ID bound to the received control instruction.

[0021] Preferably,

[0022] Each of the conversion gateway modules is connected in series with up to 128 integrated devices.

[0023] The technical solution provided by the embodiments of the present invention may have the following beneficial effects:

[0024] The present application realizes local data collection and remote control of the logistics conveyor system by centrally integrating remote IO and inverter into an all-in-one machine. Each logistics conveying equipment is equipped with an all-in-one machine. The inverter forward and reverse control instructions are connected internally by the all-in-one machine. No wiring is required, and factory pre-installation and plug-in quick connection can be achieved. Compared with the existing solution of centralizing the inverter and remote IO in the control cabinet, the on-site wiring of the present invention only needs to complete the series connection of serial cables between devices and the network cable wiring of the network hub and the main control CPU. The on-site workload is greatly reduced, thereby improving the efficiency of on-site wiring and debugging and reducing the on-site error rate.

[0025] It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and, together with the description, serve to explain the principles of the invention.

[0027] Figure 1 It is a system schematic diagram of a distributed airborne variable frequency IO integrated system for logistics transportation according to an exemplary embodiment;

[0028] Figure 2 is a schematic diagram of the internal layout of an all-in-one machine according to another exemplary embodiment;

[0029] Figure 3 is a schematic diagram of a signal transmission process according to another exemplary embodiment;

[0030] Figure 4 is a schematic diagram of multiple integrated machines connected in series according to another exemplary embodiment;

[0031] In the attached figure: 1-integrated machine, 2-conversion gateway module, 3-controller, 101-remote IO module, 102-inverter. DETAILED DESCRIPTION

[0032] Exemplary embodiments will be described in detail herein, examples of which are shown in the accompanying drawings. When the following description refers to the drawings, the same numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present invention. Instead, they are merely examples of devices and methods consistent with some aspects of the present invention as detailed in the appended claims.

[0033] Embodiment 1

[0034] Figure 1 is a system schematic diagram of a distributed airborne variable frequency IO integrated system for logistics transportation according to an exemplary embodiment. Figure 1 As shown, the system includes:

[0035] An all-in-one machine 1, wherein a remote IO module 101 and a frequency converter 102 are integrated in the all-in-one machine 1;

[0036] The signal input port of the integrated machine 1 is connected to the sensor of the conveyor for collecting sensor signals. The signal sending port of the integrated machine 1 is connected to the conversion gateway module 2 for sending the collected sensor signals to the conversion gateway module 2. The conversion gateway module 2 is used to integrate the received sensor signals and send them to the controller 3.

[0037] The controller 3 is used to send a control instruction to the conversion gateway module 2 after receiving the sensor signal, and the conversion gateway module 2 sends the control instruction to the signal receiving end of the all-in-one machine 1, and the all-in-one machine 1 forwards the received control instruction to the internal frequency converter 102, and the frequency converter 102 drives the on-site motor to move according to the control instruction;

[0038] It is understandable that the present application integrates the driver 102 and the remote IO module into an integrated machine 1, which inherits the PLC control input, motor power output and other related parameters. The internal layout of the integrated machine 1 is shown in the attached figure. Figure 2 As shown, by adopting a distributed control method and performing signal transmission control via Ethernet, it can be mounted on the conveyor body, maximizing the wiring distance between the integrated machine 1 and the sensor and motor, and directly connecting the motor and sensor of the conveyor to the mounted integrated machine 1 nearby, thus realizing distributed signal acquisition and drive control;

[0039] Install the integrated machine 1 on the side of the conveyor near the motor. The motor cable and the sensor of the conveyor body can be directly connected to the terminals of the integrated machine 1. At the same time, 2 network cables are set up to connect with other integrated machines 1 in series. Multiple integrated machines 1 can be connected in series to a conversion gateway module 2 as slave stations through the principle of Ethernet switches. Each conversion gateway module 2 can be mounted in series with 128 integrated machines 1, as shown in the attached figure. Figure 4 As shown, by connecting 128 integrated machines 1 in series, it is only necessary for the controller 1 to connect several conversion gateway modules 2 to realize the signal collection and action output of the overall conveying system; the gateway conversion module 2 collects statistics on the sensor signals through Ethernet. Compared with the existing ASI bus and CClink bus technologies, the underlying network of this embodiment adopts Ethernet architecture. Compared with the carrier or TTL signal transmission method, Ethernet has stronger anti-interference ability. In addition, this embodiment not only has the remote distributed IO function, but also customizes the inverter 102 function into the integrated machine 1 according to the characteristics of the conveying equipment. It has higher adaptability to the conveying equipment in the logistics industry and reduces the wiring work from the remote IO module 101 to the inverter 102.

[0040] As attached Figure 3 As shown, the integrated machine 1 obtains the sensor signal through the connection line with the sensor of the conveyor, sends the sensor signal to the conversion gateway module 2, and then the conversion gateway module 2 sends the sensor signal to the controller 1, and the controller 1 can be a main control PLC or other types of control modules; the controller 1 performs logical judgment according to the received sensor signal, generates a control instruction, and sends the control instruction to the conversion gateway module 2, and the conversion gateway module 2 sends it to the integrated machine 1, and the integrated machine 1 sends the control instruction to the inverter 102 through the internal line, and the inverter 102 controls the corresponding motor action through the external line;

[0041] It is worth emphasizing that, in the present embodiment, when the conversion gateway module 2 sends sensor signals to the controller 1, and when the controller 1 sends control instructions to the conversion gateway module 2, they are all sent at a fixed period; by sending data periodically, timely updating and transmission of data can be ensured, data delay can be reduced, and the response speed and overall efficiency of the system can be improved. Periodic communication can reduce unnecessary communication requests, because data will be sent at fixed time intervals, avoiding frequent data transmission, thereby reducing network load and communication costs. The periodic communication mode makes system design simpler and more predictable, because the timing of sending and receiving data is fixed, reducing the complexity of system design; through a fixed data transmission frequency, the resource usage of the system can be better managed, and system overload caused by frequent data transmission can be avoided, thereby improving the stability and reliability of the system.

[0042] In this embodiment, the integrated machines 1 are connected in series using the Ethernet protocol and the RJ45 hardware interface, and the signal response time can be controlled within 20ms. Multiple integrated machines 1 are mounted on a conversion gateway module 2, and the controller 1 only needs to establish a connection with the conversion gateway module 2 to complete the signal interaction, and does not need to interact with each integrated machine 1, thereby reducing the number of wiring connections of the controller 1 and reducing the network communication pressure of the controller 1. The inverter 102 is integrated with the remote IO module 101, and wiring is done nearby, eliminating a large amount of on-site wiring work. Only the series power wiring and network wiring need to be considered on-site, thereby achieving factory pre-installation, and enabling a single machine standard configuration to follow the mechanical body directly to the site;

[0043] Each conversion gateway module 2 is simultaneously connected in series with 128 all-in-one machines 1. In order to ensure that the control instructions of the controller 1 can be accurately sent to the corresponding all-in-one machine 1 and avoid confusion of the control signal, the present application sets a unique ID or identification for each all-in-one machine 1. After receiving the sensor signal, the all-in-one machine 1 binds the sensor signal with its own unique ID and the sensor signal and sends it to the series-connected conversion gateway module 2. The unique ID can be used as the header of the sensor signal; the conversion gateway module 2 sends the ID and sensor data corresponding to each all-in-one machine 1 to the controller 1. The controller 1 performs logical judgment based on the sensor signal of each all-in-one machine 1 to generate a control instruction. The controller 1 binds the control instruction with the corresponding ID and then sends it to the conversion gateway module 2. The conversion gateway module 2 distributes the control instruction to the corresponding all-in-one machine 1 according to the ID bound to the control instruction, and the inverter 102 in the all-in-one machine 1 realizes the drive control of the corresponding motor;

[0044] The transmission of signals / control instructions between the integrated machine 1 and the conversion gateway module 2, and between the conversion gateway module 2 and the controller 3 in this embodiment all adopts the TCP / IP protocol as the underlying transmission protocol. The TCP / IP protocol provides a standard framework and rule set for network communication, so that devices from different manufacturers and different operating systems can seamlessly exchange and communicate data. The TCP / IP protocol ensures reliable data transmission through a series of mechanisms. The TCP protocol uses three-way handshakes to establish a connection through three stages: connection establishment, data transmission, and connection release. It uses confirmation and retransmission mechanisms to handle data packet loss or damage, thereby ensuring data integrity and sequence; it supports collaborative work of various types of networks (such as local area networks and wide area networks), and supports emerging technologies such as wireless networks. Its layered structure makes each layer independent and mutually cooperative, which improves the flexibility and scalability of the system and has a fairly high degree of adaptability to the solution of this embodiment;

[0045] Of course, the communication protocol can also adopt other Ethernet protocols such as profinet, Ethernet, etc.;

[0046] The airborne integrated distributed IO of this application adopts the TTL multi-terminal serial port to TCPIP Ethernet solution as the underlying communication technology, which breaks the foreign technology monopoly in control mode and system solution, and proposes a system that is more suitable for the distributed control of logistics conveyor lines.

[0047] It can be understood that the same or similar parts of the above embodiments can be referenced to each other, and the contents not described in detail in some embodiments can refer to the same or similar contents in other embodiments.

[0048] It should be noted that, in the description of the present invention, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. In addition, in the description of the present invention, unless otherwise specified, the meaning of "plurality" refers to at least two.

[0049] Any process or method description in a flowchart or otherwise described herein may be understood to represent a module, segment or portion of code that includes one or more executable instructions for implementing the steps of a specific logical function or process, and the scope of the preferred embodiments of the present invention includes alternative implementations in which functions may not be performed in the order shown or discussed, including performing functions in a substantially simultaneous manner or in the reverse order depending on the functions involved, which should be understood by those skilled in the art to which the embodiments of the present invention belong.

[0050] It should be understood that the various parts of the present invention can be implemented by hardware, software, firmware or a combination thereof. In the above-mentioned embodiments, a plurality of steps or methods can be implemented by software or firmware stored in a memory and executed by a suitable instruction execution system. For example, if implemented by hardware, as in another embodiment, it can be implemented by any one of the following technologies known in the art or their combination: a discrete logic circuit having a logic gate circuit for implementing a logic function for a data signal, a dedicated integrated circuit having a suitable combination of logic gate circuits, a programmable gate array (PGA), a field programmable gate array (FPGA), etc.

[0051] A person skilled in the art may understand that all or part of the steps in the method for implementing the above-mentioned embodiment may be completed by instructing related hardware through a program, and the program may be stored in a computer-readable storage medium, which, when executed, includes one or a combination of the steps of the method embodiment.

[0052] In addition, each functional unit in each embodiment of the present invention may be integrated into a processing module, or each unit may exist physically separately, or two or more units may be integrated into one module. The above-mentioned integrated module may be implemented in the form of hardware or in the form of a software functional module. If the integrated module is implemented in the form of a software functional module and sold or used as an independent product, it may also be stored in a computer-readable storage medium.

[0053] The storage medium mentioned above can be a read-only memory, a magnetic disk or an optical disk, etc.

[0054] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0055] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present invention.

Claims

1. A distributed airborne variable frequency IO integrated system for logistics transportation, characterized in that: The system comprises: An all-in-one machine, wherein a remote IO module and a frequency converter are integrated in the all-in-one machine; The signal input port of the integrated machine is connected to the sensor of the conveyor for collecting sensor signals, and the signal sending port of the integrated machine is connected to the conversion gateway module for sending the collected sensor signals to the conversion gateway module, and the conversion gateway module is used to integrate the received sensor signals and send them to the controller; After receiving the sensor signal, the controller sends a control instruction to the conversion gateway module, and the conversion gateway module sends the control instruction to the signal receiving end of the all-in-one machine. The all-in-one machine forwards the received control instruction to the internal frequency converter, and the frequency converter drives the on-site motor according to the control instruction.

2. The system according to claim 1, characterized in that The controller is connected to one or more conversion gateway modules, each conversion gateway module is connected to multiple integrated machines, and the multiple integrated machines are connected in series with each other through the Ethernet protocol and then connected to one conversion gateway module.

3. The system according to claim 2, characterized in that The conversion gateway module receives sensor signals sent by multiple integrated machines connected in series, integrates the sensor signals, and sends them to the controller at a fixed period.

4. The system according to claim 3, characterized in that The controller sends control instructions to the conversion gateway module at a fixed period, and the conversion gateway module distributes the control instructions to each integrated machine connected in series.

5. The system according to claim 4, characterized in that The signal transmission between the integrated machine and the conversion gateway module, and between the conversion gateway module and the controller module uses the TCP / IP protocol as the underlying transmission protocol.

6. The system according to claim 5, characterized in that When the integrated machine sends a sensor signal to the conversion gateway module, it also sends its own unique ID. The conversion gateway module binds the sensor signals sent by multiple integrated machines connected in series with the corresponding IDs and sends them to the controller.

7. The system according to claim 6, characterized in that The controller generates a control instruction through logical judgment based on the sensor signal, binds the generated control instruction with the ID of the received sensor signal and sends it to the conversion gateway module. The conversion gateway module forwards the control instruction to the corresponding all-in-one machine based on the ID bound to the received control instruction.

8. The system according to claim 7, characterized in that Each of the conversion gateway modules is connected in series with up to 128 integrated devices.

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