CN109739192B - Control method and system under intelligent logistics system - Google Patents
Control method and system under intelligent logistics system Download PDFInfo
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Abstract
The invention discloses a control method and a system under an intelligent logistics system, wherein the method comprises the following steps: the central control equipment receives a control instruction set sent by each logistics control node; analyzing the instructions in each control instruction set, and converting the instructions into instruction files in a relational database; writing the instruction file into a storage space of the central control equipment based on a relational database; and matching the instruction file on the storage space with a capability set among a plurality of control servers, matching the instruction file with a corresponding control server, and sending the instruction file to the corresponding control server for processing. By implementing the method and the system provided by the invention, the command analysis is realized for each logistics node and converted into the instruction file, and the unified coordination processing process is satisfied after the corresponding control server is matched according to the capability set of the control server.
Description
Technical Field
The invention relates to the technical field of intelligent logistics, in particular to a control method and a control system under an intelligent logistics system.
Background
The logistics is the dynamic state of material data such as commodities in space and time variation. Therefore, the logistics management is to a large extent the management of the spatial information and the attribute information of the commodities and the materials. In the intelligent logistics technical process based on the internet of things, the intelligent terminal acquires various attribute information of commodities by using sensing technologies such as a radio frequency identification (RF) Identification (ID) technology, infrared induction and laser scanning, and transmits the attribute information to the intelligent data center by a communication means to perform centralized statistics, analysis, management, sharing and utilization on the data, so that decision support is provided for logistics management and even whole business operation. In the same year of the appearance of the intelligent logistics concept, the enterprise logistics management informatization is actively promoted, and the wide application of information technology is promoted; new technologies in the transportation fields such as a global positioning system (GNSS), a Geographic Information System (GIS), a road traffic information communication system (VI CS), a non-stop automatic toll collection system (ETC), an intelligent transportation system (I TS) and the like are actively developed and utilized to enhance the research of a logistics information system safety system.
Many advanced modern logistics systems have advanced technical features such as informatization, digital networking, integration, intellectualization, flexibility, agility, visualization, automation and the like. A plurality of logistics systems and networks also adopt the latest infrared, laser, wireless, coding, addressing, automatic identification, positioning, contactless power supply, optical fiber, database, sensor, RF ID, satellite positioning and other high and new technologies, and the integration application of the light, mechanical, electrical, information and other technologies in the logistics systems is the embodiment of the application of the Internet of things technology in the logistics industry.
At present, each terminal device under the logistics device is controlled based on an electrified device, so that the efficiency of the whole centralized control is low, and the whole centralized control cannot be directly accessed to a centralized control room.
Disclosure of Invention
Aiming at the technical defects of the existing logistics control system, the invention provides a control method and a control system under an intelligent logistics system, which are used for realizing command analysis and converting the command into an instruction file aiming at each logistics node, matching a corresponding control server according to the capability set of the control server and meeting the requirement of a unified coordination processing process.
To this end, the present invention provides a control method under an intelligent logistics system, where the intelligent logistics system includes a central control device, a plurality of logistics control nodes connected to the central control device, and a plurality of control servers, and the plurality of logistics control nodes include: the intelligent elevator system comprises a plurality of intelligent elevators, a plurality of logistics conveying lines, a plurality of stacking machines and a plurality of sensing nodes, wherein the central control equipment and the logistics control nodes are communicated with the logistics control nodes on the basis of a power line carrier communication (PLC) protocol;
the central control equipment receives a control instruction set sent by each logistics control node;
analyzing the instructions in each control instruction set, and converting the instructions into instruction files in a relational database;
writing the instruction file into a storage space of the central control equipment based on a relational database;
and matching the instruction file on the storage space with a capability set among a plurality of control servers, matching the instruction file with a corresponding control server, and sending the instruction file to the corresponding control server for processing.
The method for receiving the control instruction set sent by each logistics control node by the central control equipment comprises the following steps:
the central control equipment is connected to corresponding logistics control nodes based on a broadband power line interface circuit and a circuit line, and receives broadband carrier data from the corresponding logistics control nodes through the broadband circuit line interface circuit; and demodulates a set of control instructions in the wideband carrier data.
The method for receiving the control instruction set sent by each logistics control node by the central control equipment comprises the following steps:
and the central control equipment carries out filtering processing on the received control instruction set.
The analyzing the instructions in each control instruction set and converting the instructions into the instruction files in the relational database comprises the following steps:
obtaining an analysis table item corresponding to each control instruction set from an analysis table corresponding to a relational database, wherein the analysis table records the analysis table item corresponding to the instruction corresponding to each control instruction set, and the analysis table item comprises a parameter storage address and a control program starting mark; and running a program corresponding to a control program starting mark in the analysis table item corresponding to the instruction according to the execution parameter corresponding to the parameter storage address in the analysis table item corresponding to the instruction.
The writing the instruction file to the storage space of the central control device based on the relational database comprises:
acquiring a state value of a data storage space on a user data area on a storage space, wherein the state value is mapped with the relevance between the user data area of each logistics control node and a relational database;
and controlling the command file to be written into the storage space of the central control equipment based on the relevance and the state value of the data storage space.
The matching processing of the instruction file on the storage space and the capability set among the plurality of control servers, matching of the instruction file with the corresponding control server, and sending of the instruction file to the corresponding control server for processing includes:
and carrying out protocol conversion transmission on the instruction file on the storage space based on the CAN controller, and sending the instruction file subjected to matching processing on the capability set to a corresponding control server based on CAN bus data.
And the matching processing is carried out on the instruction file on the storage space and the capability sets among a plurality of control servers:
and carrying out capability set matching on the address information of each logistics control node, the command type of the instruction file, the size of the instruction file and the equipment parameters in the instruction file.
The matching processing of the instruction file on the storage space and the capability sets among the plurality of control servers comprises:
acquiring the deviation of the data item value of the standard object based on the address information, the command type of the instruction file, the size of the instruction file and the equipment parameter of each logistics control node;
iteratively calculating the matching degree of the instruction file and the standard object according to the obtained deviation; wherein the standard objects are: an item set comprising preset standard values of capacity items;
and determining the corresponding control server according to the matching degree of the iterative computation.
Correspondingly, the embodiment of the invention also provides a control system under the intelligent logistics system, and the control system executes the method.
Compared with the prior art, the plurality of logistics control nodes are connected through the central control equipment, the controllers related to the logistics control nodes are communicated with the central control equipment on the basis of the power line carrier communication PLC, and the reconstruction of the original logistics control node controller nodes cannot be involved. Under the condition of meeting the centralized communication control of the logistics control nodes in the whole logistics system, the central control equipment can complete the collection of the control instruction sets of the logistics notification nodes and convert the control instruction sets into instruction files in the relational database, so that the uniformity of the whole protocol data is guaranteed and the whole protocol data is stored in a storage space. When the whole data is uniformly stored in the storage space, the matching process of each instruction file is realized, the instruction files are sent to the corresponding control server, the control server can effectively realize the instruction file processing process aiming at different logistics nodes, the corresponding server nodes are matched aiming at different logistics nodes and control contents, and the matching process between the nodes and the server can be coordinated by one central control device.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a control system under an intelligent logistics system in an embodiment of the invention;
FIG. 2 is a schematic structural diagram of a central control device in an embodiment of the present invention;
fig. 3 is a flowchart of a control method under the intelligent logistics system in the embodiment of the invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The control method under the intelligent logistics system related in the embodiment of the invention, the intelligent logistics system comprises a central control device, a plurality of logistics control nodes connected with the central control device, and a plurality of control servers, wherein the logistics control nodes comprise: the intelligent elevator system comprises a plurality of intelligent elevators, a plurality of logistics conveying lines, a plurality of stacking machines and a plurality of sensing nodes, wherein the central control equipment and the logistics control nodes are communicated with the logistics control nodes on the basis of a power line carrier communication (PLC) protocol;
the central control equipment receives a control instruction set sent by each logistics control node;
analyzing the instructions in each control instruction set, and converting the instructions into instruction files in a relational database;
writing the instruction file into a storage space of the central control equipment based on a relational database;
and matching the instruction file on the storage space with a capability set among a plurality of control servers, matching the instruction file with a corresponding control server, and sending the instruction file to the corresponding control server for processing.
The central control equipment is connected with the plurality of logistics control nodes, the controllers related to the logistics control nodes are communicated with the central control equipment on the basis of the power line carrier communication PLC, and the reconstruction of the original logistics control node controller nodes is not involved. Under the condition of meeting the centralized communication control of the logistics control nodes in the whole logistics system, the central control equipment can complete the collection of the control instruction sets of the logistics notification nodes and convert the control instruction sets into instruction files in the relational database, so that the uniformity of the whole protocol data is guaranteed and the whole protocol data is stored in a storage space. When the whole data is uniformly stored in the storage space, the matching process of each instruction file is realized, the instruction files are sent to the corresponding control server, the control server can effectively realize the instruction file processing process aiming at different logistics nodes, the corresponding server nodes are matched aiming at different logistics nodes and control contents, and the matching process between the nodes and the server can be coordinated by one central control device.
Specifically, fig. 1 shows a schematic structural diagram of a control system in an intelligent logistics system in an embodiment of the present invention, where the intelligent logistics system includes a central control device, a plurality of logistics control nodes connected to the central control device, and a plurality of control servers, where the plurality of logistics control nodes include: the intelligent elevator system comprises a plurality of intelligent elevators, a plurality of logistics conveying lines, a plurality of stacking machines and a plurality of sensing nodes, wherein the central control equipment is communicated with the logistics control nodes on the basis of a power line carrier communication (PLC) protocol.
Fig. 2 shows a schematic structural diagram of a central control device in the embodiment of the present invention, where the central control examination and verification table includes: the device comprises a plurality of broadband power line interface circuits, a serial port module, a filtering module, a demodulation module, a command analysis module, a storage module, a capability set matching module, a CAN controller and the like.
Each path of the plurality of broadband power line interface circuits can be connected with a logistics control node, the logistics control nodes can be intelligent elevators, logistics transmission lines, stacking machines, sensing nodes and the like, the logistics control nodes and a central control device are communicated with the logistics control nodes on the basis of a power carrier communication PLC protocol, the central control device is connected to the corresponding logistics control nodes on the basis of the broadband power line interface circuits and circuit lines, and receives broadband carrier data from the corresponding logistics control nodes through the broadband circuit line interface circuits; and demodulating the control instruction set in the broadband carrier data, wherein the demodulation process is realized in a demodulation module.
It should be noted that the central control device is connected to each broadband power line interface circuit based on the serial port module, so as to realize the collection process from the multi-interface to one-way data, and avoid the disorder of data collection. It should be noted that, the serial port module here adopts the priority of the interrupt mechanism to obtain the PLC protocol data frame on the logistics control node; or a polling mode is adopted to respond to each sub-serial port to obtain serial port data frames on the control node. The serial port module realizes the receiving/transmitting control of the PLC protocol on a plurality of broadband power line interface circuits and comprises a microcontroller, a serial port expansion chip, a MAX232 and other elements. When data are generated on two groups of broadband power line interface circuits at the same time, firstly, the interrupt mechanism of the serial port module judges the priority of the interrupt request and responds to the interrupt request with high priority in priority. When there are data requests on multiple broadband power line interface circuits at the same time, each sub-port is responded by a polling mode, namely, the response is carried out according to the addresses of the sub-ports from small to large.
The filtering module carries out filtering processing on a received control instruction set in the central control equipment, the filtering module is arranged behind the serial port module and can be matched with the serial port module to intensively collect a filtering processing process after data, because the serial port module only realizes a centralized data receiving and sending process and does not carry out a processing process on protocol data on a broadband power line interface circuit, if the filtering module is arranged in front of the serial port module, the filtering module is required to be configured for each broadband power line interface circuit, and the filtering module is arranged behind the serial port module and can be a protocol data processing process which is intensively collected after the serial port module, the processing efficiency of the filtering module is optimized, the implementation cost of the filtering module is reduced, and the filtering module is ensured to intensively carry out an efficient filtering processing process. The filtering module can realize the obstruction of 50Hz signals of the power line and enable broadband carrier signals to pass through in two directions. In a specific implementation process, the whole filtering module can amplify or attenuate a received analog signal based on a low noise amplifier and send the amplified or attenuated analog signal to an analog mixer; the analog mixer carries out frequency mixing processing on a received power line carrier signal and a signal generated by a local oscillator in the analog mixer, and the frequency of the signal obtained after the frequency mixing is within the passband range of the analog filter; the local oscillation frequency in the analog mixer is adjustable; the analog filter carries out filtering processing on the power line carrier signal after the frequency mixing processing; performing analog-to-digital conversion on the power line carrier signal after the filtering processing, and performing frequency mixing processing on the power line carrier signal after the analog-to-digital conversion by using a digital mixer, wherein the frequency of a signal obtained after the frequency mixing is within the passband range of a digital filter; the digital filter carries out filtering processing on the power line carrier signal after the frequency mixing processing and sends the signal after the filtering processing to the demodulation module; and the demodulation module demodulates the filtered power line carrier signal to acquire a control instruction set in the power line carrier data. By the data filtering method, data on each logistics control node can be optimized, the power line communication requirement is improved, and the adaptability of a power line communication signal under the whole intelligent logistics system is improved.
The command analysis module in the central control module can analyze the instructions in each control instruction set and convert the instructions into instruction files under a relational database, and in the specific implementation process, the command analysis module obtains analysis table items corresponding to each control instruction set from an analysis table corresponding to the relational database, wherein the analysis table records the analysis table items corresponding to the instructions corresponding to each control instruction set, and each analysis table item comprises a parameter storage address and a control program starting mark; and running a program corresponding to a control program starting mark in the analysis table item corresponding to the instruction according to the execution parameter corresponding to the parameter storage address in the analysis table item corresponding to the instruction. Based on the instruction set and the control process of analyzing the table entry, the instructions can be better matched and compatible on a storage space, the performance of storage scheduling is better optimized, and the efficient in-out matching processing process is achieved.
A storage module in the central control equipment writes an instruction file into a storage space of the central control equipment based on a relational database, and acquires a state value of a data storage space on a user data area on the storage space in a specific implementation process, wherein the state value is mapped with the relevance between the user data area of each logistics control node and the relational database; and controlling the command file to be written into the storage space of the central control equipment based on the relevance and the state value of the data storage space. The write-in data based on the storage relation can embody the rapid iterative computation of the matching of the storage state relation and the subsequent capability set, ensure the ordering of data entry and exit and the rapid response of the whole iterative computation, and can improve the data response capability.
A capability set matching module in the central control device can perform matching processing on the instruction files on the storage space and the capability sets among the plurality of control servers, which can form data contents of different dimensions on a storage space based on the contents and formats stored by a relational database, the data stored by the whole storage module is also only buffer data, the converted data content in the storage space requires further conversion and data encapsulation on the matching to the control server, particularly, the whole processing mechanism needs to be perfected by the server which matches and has adaptive capacity to process the data, the data of the slave node end can be ensured to be processed by the corresponding control server, the method carries out capability set matching on address information of each logistics control node in the instruction file, the command type of the instruction file, the size of the instruction file and equipment parameters. In a specific implementation process, acquiring the deviation of a data item value of a standard object based on address information, an instruction file command type, an instruction file size and equipment parameters of each logistics control node; iteratively calculating the matching degree of the instruction file and the standard object according to the obtained deviation; wherein the standard objects are: an item set comprising preset standard values of capacity items; and determining the corresponding control server according to the matching degree of the iterative computation. And aiming at the address information, the file command type and the instruction file size, the corresponding control server can be matched, the corresponding relation between the control file and the control server is ensured, and an item set of standard values of the capacity items is formed between the control file and the control server. The physical attributes of each logistics control node, namely address information, an instruction set, command file size under the instruction set, equipment parameters and the like are referred to establish an item set of a matched standard value of a capability item, the item sets are all related to the performance of the related control server, for example, a control server 1 with high performance is matched for information control of a stacking machine, a control server 2 with low performance is matched for sensing nodes possibly only for information acquisition, and the information control is matched for the logistics control nodes, the optimized control server process can provide an engaged information processing process for the control server corresponding to the logistics control nodes in an accurate matching way without completing the matching control of all the logistics controllable nodes in one control server, reduces the workload of the related control servers, and ensures the accurate matching between the logistics control nodes and the control servers, and optimizing the whole control flow.
And the CAN controller in the central control equipment performs protocol conversion transmission on the instruction file on the storage space, and transmits the instruction file subjected to matching processing on the capability set to the corresponding control server based on CAN bus data. CAN is an abbreviation of Controller Area Network (hereinafter CAN) and is a serial communication protocol standardized by ISO international. The field bus is one of the hot spots of the technical development in the current automation field, and is known as a computer local area network in the automation field. The occurrence of the method provides powerful technical support for realizing real-time and reliable data communication among all nodes of a distributed control system. The CAN bus is a field bus which has formed an international standard and has the characteristics of high communication rate, easy realization, high cost performance and the like.
It should be noted that the CAN controller herein includes a CAN bus interface, a CAN bus transceiver circuit, a CPU processor and a CAN bus switching circuit; the CPU processor is connected with the CAN bus transceiver circuit and is used for receiving and sending serial port data; the CPU processor is connected with the CAN bus switching circuit and is used for outputting different control signals to control the conduction and the closure of the CAN bus switching circuit; the CAN bus switching circuit is connected between the CAN bus interface and the CAN bus transceiver circuit and is used for controlling the signal output between the CAN bus and the control server. In the specific implementation process, after the corresponding control server is matched and processed by the instruction file, the CAN controller analyzes the address information of the control server, and the CAN bus transceiver circuit outputs the control signal acted by the CPU processor to the corresponding control server under the action of the CAN bus switching circuit.
The CAN controller may form an ethernet data stream according to an ethernet data frame encapsulation process and transmit the ethernet data stream to the corresponding control server. The CAN controller finally realizes the protocol transmission process from the PLC protocol to the control server, the central control equipment realizes the capacity set matching process with the control server based on the PLC protocol receiving, the transmission control process from the logistics control node to the corresponding control server is guaranteed, the centralized collection of the PLC protocol is guaranteed, and the receiving processing mechanism with stable protocol content is realized.
Fig. 3 is a flowchart illustrating a control method in an intelligent logistics system according to an embodiment of the present invention, where the intelligent logistics system includes a central control device, a plurality of logistics control nodes connected to the central control device, and a plurality of control servers, where the plurality of logistics control nodes include: the intelligent elevator system comprises a plurality of intelligent elevators, a plurality of logistics conveying lines, a plurality of stacking machines and a plurality of sensing nodes, wherein the central control equipment and the logistics control nodes are communicated with the logistics control nodes on the basis of a power line carrier communication (PLC) protocol;
s301, the central control equipment receives a control instruction set sent by each logistics control node;
in a specific implementation process, the central control equipment is connected to corresponding logistics control nodes based on a broadband power line interface circuit and a circuit line, and receives broadband carrier data from the corresponding logistics control nodes through the broadband circuit line interface circuit; and demodulates a set of control instructions in the wideband carrier data. Each path of the plurality of broadband power line interface circuits can be connected with a logistics control node, the logistics control nodes can be intelligent elevators, logistics transmission lines, stacking machines, sensing nodes and the like, the logistics control nodes and a central control device are communicated with the logistics control nodes on the basis of a power carrier communication PLC protocol, the central control device is connected to the corresponding logistics control nodes on the basis of the broadband power line interface circuits and circuit lines, and receives broadband carrier data from the corresponding logistics control nodes through the broadband circuit line interface circuits; and demodulating the control instruction set in the broadband carrier data, wherein the demodulation process is realized in a demodulation module.
The central control equipment is connected with each broadband power line interface circuit based on the serial port module, so that the collection process of data from multiple interfaces to one path is realized, the disorder of data collection is avoided, the multiple serial port module is connected with different logistics control nodes based on the multiple broadband power line interface circuits, and the transmission of PLC data streams in the logistics nodes to CAN data streams is possible through the central control equipment. It should be noted that, the serial port module here adopts the priority of the interrupt mechanism to obtain the PLC protocol data frame on the logistics control node; or a polling mode is adopted to respond to each sub-serial port to obtain serial port data frames on the logistics control node. The serial port module realizes the receiving/transmitting control of the PLC protocol on a plurality of broadband power line interface circuits and comprises a microcontroller, a serial port expansion chip, a MAX232 and other elements. When data are generated on two groups of broadband power line interface circuits at the same time, firstly, the interrupt mechanism of the serial port module judges the priority of the interrupt request and responds to the interrupt request with high priority in priority. When there are data requests on multiple broadband power line interface circuits at the same time, each sub-port is responded by a polling mode, namely, the response is carried out according to the addresses of the sub-ports from small to large.
In a specific implementation process, the central control device performs filtering processing on the received control instruction set. This filtering processing process sets up behind serial port module, can cooperate the serial port module to concentrate the filtering processing process after collecting under the data circumstances, because serial port module has only realized concentrating the data receiving and dispatching process, and not carry out the processing procedure to the protocol data on the broadband power line interface circuit, if set up before serial port module, need dispose the filtering module to each broadband power line interface circuit, and set up behind serial port module, can be to concentrating the protocol data processing process under collecting behind the serial port module, the efficiency of filtering module processing has been optimized, reduce the implementation cost of filtering module, the high-efficient filtering processing process is concentrated to the guarantee filtering module. The filtering module can realize the obstruction of 50Hz signals of the power line and enable broadband carrier signals to pass through in two directions. In a specific implementation process, the whole filtering module can amplify or attenuate a received analog signal based on a low noise amplifier and send the amplified or attenuated analog signal to an analog mixer; the analog mixer carries out frequency mixing processing on a received power line carrier signal and a signal generated by a local oscillator in the analog mixer, and the frequency of the signal obtained after the frequency mixing is within the passband range of the analog filter; the local oscillation frequency in the analog mixer is adjustable; the analog filter carries out filtering processing on the power line carrier signal after the frequency mixing processing; performing analog-to-digital conversion on the power line carrier signal after the filtering processing, and performing frequency mixing processing on the power line carrier signal after the analog-to-digital conversion by using a digital mixer, wherein the frequency of a signal obtained after the frequency mixing is within the passband range of a digital filter; the digital filter carries out filtering processing on the power line carrier signal after the frequency mixing processing and sends the signal after the filtering processing to the demodulation module; and the demodulation module demodulates the filtered power line carrier signal to acquire a control instruction set in the power line carrier data. By the data filtering method, data on each logistics control node can be optimized, the power line communication requirement is improved, and the adaptability of a power line communication signal under the whole intelligent logistics system is improved.
S302, analyzing the instructions in each control instruction set, and converting the instructions into instruction files in a relational database;
in a specific implementation process, obtaining an analysis table entry corresponding to each control instruction set from an analysis table corresponding to a relational database, wherein the analysis table records the analysis table entry corresponding to the instruction corresponding to each control instruction set, and the analysis table entry comprises a parameter storage address and a control program starting mark; and running a program corresponding to a control program starting mark in the analysis table item corresponding to the instruction according to the execution parameter corresponding to the parameter storage address in the analysis table item corresponding to the instruction.
S303, writing the instruction file into a storage space of the central control equipment based on a relational database;
in a specific implementation process, acquiring a state value of a data storage space on a user data area on the storage space, wherein the state value is mapped with the relevance between the user data area of each logistics control node and a relational database; and controlling the command file to be written into the storage space of the central control equipment based on the relevance and the state value of the data storage space.
S304, matching the instruction file in the storage space with the capability sets of the plurality of control servers, matching the instruction file with the corresponding control server, and sending the instruction file to the corresponding control server for processing.
In a specific implementation process, the central control equipment performs protocol conversion transmission on the instruction file on the storage space based on the CAN controller, and sends the instruction file subjected to matching processing on the capability set to the corresponding control server based on CAN bus data. And the CAN controller in the central control equipment performs protocol conversion transmission on the instruction file on the storage space, and transmits the instruction file subjected to matching processing on the capability set to the corresponding control server based on CAN bus data. CAN is an abbreviation of Controller Area Network (hereinafter CAN) and is a serial communication protocol standardized by ISO international. The field bus is one of the hot spots of the technical development in the current automation field, and is known as a computer local area network in the automation field. The occurrence of the method provides powerful technical support for realizing real-time and reliable data communication among all nodes of a distributed control system. The CAN bus is a field bus which has formed an international standard and has the characteristics of high communication rate, easy realization, high cost performance and the like. The CAN controller may form an ethernet data stream according to an ethernet data frame encapsulation process and transmit the ethernet data stream to the corresponding control server. The CAN controller finally realizes the protocol transmission process from the PLC protocol to the control server, the central control equipment realizes the capacity set matching process with the control server based on the PLC protocol receiving, the transmission control process from the logistics control node to the corresponding control server is guaranteed, the centralized collection of the PLC protocol is guaranteed, and the receiving processing mechanism with stable protocol content is realized.
It should be noted that the CAN controller herein includes a CAN bus interface, a CAN bus transceiver circuit, a CPU processor and a CAN bus switching circuit; the CPU processor is connected with the CAN bus transceiver circuit and is used for receiving and sending serial port data; the CPU processor is connected with the CAN bus switching circuit and is used for outputting different control signals to control the conduction and the closure of the CAN bus switching circuit; the CAN bus switching circuit is connected between the CAN bus interface and the CAN bus transceiver circuit and is used for controlling the signal output between the CAN bus and the control server. In the specific implementation process, after the corresponding control server is matched and processed by the instruction file, the CAN controller analyzes the address information of the control server, and the CAN bus transceiver circuit outputs the control signal acted by the CPU processor to the corresponding control server under the action of the CAN bus switching circuit.
In a specific implementation process, the matching processing is performed on the instruction file on the storage space and the capability sets among the plurality of control servers: and carrying out capability set matching on the address information of each logistics control node, the command type of the instruction file, the size of the instruction file and the equipment parameters in the instruction file.
In a specific implementation process, the matching processing of the instruction file on the storage space and the capability sets among the plurality of control servers includes: acquiring the deviation of the data item value of the standard object based on the address information, the command type of the instruction file, the size of the instruction file and the equipment parameter of each logistics control node; iteratively calculating the matching degree of the instruction file and the standard object according to the obtained deviation; wherein the standard objects are: an item set comprising preset standard values of capacity items; and determining the corresponding control server according to the matching degree of the iterative computation. The physical attributes of each logistics control node, namely address information, an instruction set, command file size under the instruction set, equipment parameters and the like are referred to establish an item set of a matched standard value of a capability item, the item sets are all related to the performance of the related control server, for example, a control server 1 with high performance is matched for information control of a stacking machine, a control server 2 with low performance is matched for sensing nodes possibly only for information acquisition, and the information control is matched for the logistics control nodes, the optimized control server process can provide an engaged information processing process for the control server corresponding to the logistics control nodes in an accurate matching way without completing the matching control of all the logistics controllable nodes in one control server, reduces the workload of the related control servers, and ensures the accurate matching between the logistics control nodes and the control servers, and optimizing the whole control flow.
In summary, in the embodiment of the present invention, the central control device is connected to the plurality of logistics control nodes, and the controllers related to the logistics control nodes are communicated with the central control device based on the power carrier communication PLC, so that the modification of the original logistics control node controller nodes is not involved. Under the condition of meeting the centralized communication control of the logistics control nodes in the whole logistics system, the central control equipment can complete the collection of the control instruction sets of the logistics notification nodes and convert the control instruction sets into instruction files in the relational database, so that the uniformity of the whole protocol data is guaranteed and the whole protocol data is stored in a storage space. When the whole data is uniformly stored in the storage space, the matching process of each instruction file is realized, the instruction files are sent to the corresponding control server, the control server can effectively realize the instruction file processing process aiming at different logistics nodes, the corresponding server nodes are matched aiming at different logistics nodes and control contents, and the matching process between the nodes and the server can be coordinated by one central control device.
The method and system for controlling intelligent logistics provided by the embodiment of the invention are described in detail, a specific example is applied in the description to explain the principle and the implementation of the invention, and the description of the embodiment is only used for helping to understand the method and the core idea of the invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present invention.
Claims (6)
1. The control method under the intelligent logistics system is characterized in that the intelligent logistics system comprises a central control device, a plurality of logistics control nodes connected with the central control device, and a plurality of control servers, wherein the logistics control nodes comprise: the intelligent elevator system comprises a plurality of intelligent elevators, a plurality of logistics conveying lines, a plurality of stacking machines and a plurality of sensing nodes, wherein the central control equipment and the logistics control nodes are communicated with the logistics control nodes on the basis of a power line carrier communication (PLC) protocol;
the central control equipment receives a control instruction set sent by each logistics control node;
analyzing the instructions in each control instruction set, and converting the instructions into instruction files in a relational database;
writing the instruction file into a storage space of the central control equipment based on a relational database;
matching the instruction file on the storage space with a capability set among a plurality of control servers, matching the instruction file with a corresponding control server, and sending the instruction file to the corresponding control server for processing;
the method for receiving the control instruction set sent by each logistics control node by the central control equipment comprises the following steps:
the central control equipment is connected to corresponding logistics control nodes based on a broadband power line interface circuit and a circuit line, and receives broadband carrier data from the corresponding logistics control nodes through the broadband circuit line interface circuit; demodulating a control instruction set in the broadband carrier data;
the method for receiving the control instruction set sent by each logistics control node by the central control equipment comprises the following steps:
the central control equipment carries out filtering processing on the received control instruction set;
the analyzing the instructions in each control instruction set and converting the instructions into the instruction files in the relational database comprises the following steps:
obtaining an analysis table item corresponding to each control instruction set from an analysis table corresponding to a relational database, wherein the analysis table records the analysis table item corresponding to the instruction corresponding to each control instruction set, and the analysis table item comprises a parameter storage address and a control program starting mark; and running a program corresponding to a control program starting mark in the analysis table item corresponding to the instruction according to the execution parameter corresponding to the parameter storage address in the analysis table item corresponding to the instruction.
2. The control method under the intelligent logistics system of claim 1, wherein the writing the instruction file to the storage space of the central control device based on the relational database comprises:
acquiring a state value of a data storage space on a user data area on a storage space, wherein the state value is mapped with the relevance between the user data area of each logistics control node and a relational database;
and controlling the command file to be written into the storage space of the central control equipment based on the relevance and the state value of the data storage space.
3. The control method under the intelligent logistics system according to claim 2, wherein the matching of the instruction file on the storage space with the capability sets of the plurality of control servers, matching of the instruction file with the corresponding control server, and sending of the instruction file to the corresponding control server for processing comprises:
and carrying out protocol conversion transmission on the instruction file on the storage space based on the CAN controller, and sending the instruction file subjected to matching processing on the capability set to a corresponding control server based on CAN bus data.
4. The control method under the intelligent logistics system of claim 3, wherein the matching of the instruction file on the storage space with the capability sets of the plurality of control servers is performed by:
and carrying out capability set matching on the address information of each logistics control node, the command type of the instruction file, the size of the instruction file and the equipment parameters in the instruction file.
5. The control method under the intelligent logistics system of claim 4, wherein the matching of the instruction file on the storage space with the capability sets of the plurality of control servers comprises:
acquiring the deviation of the data item value of the standard object based on the address information, the command type of the instruction file, the size of the instruction file and the equipment parameter of each logistics control node;
iteratively calculating the matching degree of the instruction file and the standard object according to the obtained deviation; wherein the standard objects are: an item set comprising preset standard values of capacity items;
and determining the corresponding control server according to the matching degree of the iterative computation.
6. A control system under an intelligent logistics system, characterized in that the control system performs the method of any of claims 1 to 5.
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| CN111430008A (en) * | 2020-02-25 | 2020-07-17 | 广州七乐康药业连锁有限公司 | Medical data processing method and medical data processing system based on cloud platform |
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