CN117792559B - Data transmission method, device and system based on time slot allocation - Google Patents
Data transmission method, device and system based on time slot allocation Download PDFInfo
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Abstract
The application provides a data transmission method, a device and a system based on time slot allocation, wherein the method comprises the following steps: the master station end obtains the number of the slave station ends and distributes corresponding downlink data frame bits and uplink data frame bits to each slave station end according to the number of the slave station ends; the master station end generates target uplink time data according to target uplink data frame bits corresponding to the target slave station end; when the timing data and the target uplink time data are located in the target downlink data frame bit corresponding to the target slave station end, the master station end sends the timing data and the target uplink time data to the target slave station end; the target slave station end is used for timing according to the timing data and generating a target uplink data packet according to the target data to be uploaded; and when the target uplink data frame bit is positioned, the target slave station end is also used for transmitting the target uplink data packet to the master station end. By distributing the corresponding downlink data frame bit and uplink data frame bit to each slave station, the problem of low communication efficiency is solved, and the effects of rapidly and efficiently transmitting the operation and production information of the equipment are achieved.
Description
Technical Field
The present application relates to the field of data transmission, and in particular, to a method, an apparatus, and a system for data transmission based on slot allocation.
Background
In the existing laser marking equipment system, the system needs to communicate with an MES system, for example, a related standard protocol is adopted, and a low-speed master-slave communication mode is adopted in most of the systems, so that the communication efficiency is low, and the high-efficiency production of equipment can be directly influenced due to incapability of concurrency; although the TCP/IP mode adopting the conversion protocol can improve the transmission efficiency, the system resources are occupied for preparation and operation, and partial production line equipment is not supported; the adoption of the response type communication mode also can influence the production beat, so that unnecessary clamping or quality problems are caused.
Disclosure of Invention
In view of the foregoing, the present application has been made to provide a data transmission method, apparatus and system based on slot allocation that overcomes or at least partially solves the foregoing problems.
The application discloses a data transmission method based on time slot allocation, which relates to a master station end and at least two slave station ends; the master station end is preset with timing data for calibrating the slave station end clock; the slave station end comprises data to be uploaded;
The method comprises the following steps:
The master station end obtains the number of the slave station ends and distributes corresponding downlink data frame bits and uplink data frame bits to each slave station end according to the number of the slave station ends; wherein, the downlink data frame bit and the uplink data frame bit are respectively in one-to-one correspondence with the slave station end;
the master station end generates target uplink time data according to target uplink data frame bits corresponding to the target slave station end;
when the data is in a target downlink data frame bit corresponding to the target slave station end, the master station end sends the timing data and the target uplink time data to the target slave station end; the target slave station end is used for timing according to the timing data and generating a target uplink data packet according to target data to be uploaded; and when the target uplink data frame bit is positioned, the target slave station end is also used for transmitting the target uplink data packet to the master station end.
Further, the step of allocating the corresponding downlink data frame bit and uplink data frame bit to each slave station according to the number of the slave station includes:
the master station end numbers the slave station ends according to the number of the slave station ends;
and the master station end distributes corresponding downlink data frame bits and uplink data frame bits to each slave station end according to the respective numbers of the slave station ends.
Further, the step of allocating a corresponding downlink data frame bit and an uplink data frame bit to each slave station according to the respective numbers of the slave station includes:
the master station end distributes corresponding uplink data frame bits to each slave station end according to the respective numbers of the slave station ends;
the master station end groups the slave station ends according to the respective numbers of the slave station ends, and distributes corresponding downlink data frame bits to each slave station end according to the groups of the slave station ends.
Further, the method involves the MES end;
the method further comprises the steps of:
And when the target uplink data packet is received, the master station end sends the target uplink data packet to the MES end.
The application discloses a data transmission method based on time slot allocation, which relates to a master station end and at least two slave station ends; the master station end is preset with timing data for calibrating the slave station end clock; the slave station end comprises data to be uploaded; the master station end is used for acquiring the number of the slave station ends and distributing corresponding downlink data frame bits and uplink data frame bits to each slave station end according to the number of the slave station ends; wherein, the downlink data frame bit and the uplink data frame bit are respectively in one-to-one correspondence with the slave station end; the master station end is also used for generating target uplink time data according to the target uplink data frame bit corresponding to the target slave station end; when the master station is positioned at the target downlink data frame bit corresponding to the target slave station, the master station is also used for transmitting the timing data and the target uplink time data to the target slave station;
The method comprises the following steps:
the target slave station terminal performs timing according to the timing data and generates a target uplink data packet according to target data to be uploaded;
And when the target uplink data frame bit is positioned, the target slave station end transmits the target uplink data packet to the master station end.
Further, the step of generating the target uplink data packet according to the target data to be uploaded includes:
and generating a target uplink data packet by marking a time stamp according to the target data to be uploaded.
The application discloses a data transmission device based on time slot allocation, which relates to a master station end and at least two slave station ends; the master station end is preset with timing data for calibrating the slave station end clock; the slave station end comprises data to be uploaded;
The device comprises:
The frame bit allocation module is used for acquiring the number of the slave station ends and allocating corresponding downlink data frame bits and uplink data frame bits to each slave station end according to the number of the slave station ends; wherein, the downlink data frame bit and the uplink data frame bit are respectively in one-to-one correspondence with the slave station end;
The target uplink time data generation module is used for generating target uplink time data according to target uplink data frame bits corresponding to the target slave station end;
The target uplink time data transmitting module is used for transmitting the timing data and the target uplink time data to the target slave station when the target uplink time data is positioned at a target downlink data frame bit corresponding to the target slave station; the target slave station end is used for timing according to the timing data and generating a target uplink data packet according to target data to be uploaded; and when the target uplink data frame bit is positioned, the target slave station end is also used for transmitting the target uplink data packet to the master station end.
The application discloses a data transmission device based on time slot allocation, which relates to a master station end and at least two slave station ends; the master station end is preset with timing data for calibrating the slave station end clock; the slave station end comprises data to be uploaded; the master station end is used for acquiring the number of the slave station ends and distributing corresponding downlink data frame bits and uplink data frame bits to each slave station end according to the number of the slave station ends; wherein, the downlink data frame bit and the uplink data frame bit are respectively in one-to-one correspondence with the slave station end; the master station end is also used for generating target uplink time data according to the target uplink data frame bit corresponding to the target slave station end; when the master station is positioned at the target downlink data frame bit corresponding to the target slave station, the master station is also used for transmitting the timing data and the target uplink time data to the target slave station;
The device comprises:
The target uplink data packet generating module is used for timing according to the timing data and generating a target uplink data packet according to target data to be uploaded;
And the first target uplink data packet sending module is used for sending the target uplink data packet to the master station when the target uplink data packet is in the target uplink data frame bit.
The application discloses a data transmission system based on time slot allocation, which relates to a master station end and at least two slave station ends; the master station end is preset with timing data for calibrating the slave station end clock; the slave station end comprises data to be uploaded;
the system comprises:
the master station end is used for acquiring the number of the slave station ends and distributing corresponding downlink data frame bits and uplink data frame bits to each slave station end according to the number of the slave station ends; wherein, the downlink data frame bit and the uplink data frame bit are respectively in one-to-one correspondence with the slave station end;
the master station end is also used for generating target uplink time data according to the target uplink data frame bit corresponding to the target slave station end;
When the master station is positioned at the target downlink data frame bit corresponding to the target slave station, the master station is also used for transmitting the timing data and the target uplink time data to the target slave station;
The target slave station end is used for timing according to the timing data and generating a target uplink data packet according to target data to be uploaded;
And when the target uplink data frame bit is positioned, the target slave station end is also used for transmitting the target uplink data packet to the master station end.
Further, the system also relates to an MES end;
The system further comprises:
And when the target uplink data packet is received, the master station end is also used for sending the target uplink data packet to the MES end.
The application has the following advantages:
In the embodiment of the application, a low-speed master-slave communication mode is adopted aiming at the communication mode in the prior art, so that the communication efficiency is low, and the high-efficiency production of equipment can not be directly influenced due to the fact that the communication efficiency is low; although the TCP/IP mode adopting the conversion protocol can improve the transmission efficiency, the system resources are occupied for preparation and operation, and partial production line equipment is not supported; the adoption of the response type communication mode also can influence the production beat, so that unnecessary clamping or quality problems are caused. The application provides a data transmission method, a device and a system based on time slot allocation, wherein the method relates to a master station end and at least two slave station ends; the master station end is preset with timing data for calibrating the clock of the slave station end; the slave station end comprises data to be uploaded; the method comprises the following steps: the master station end obtains the number of the slave station ends and distributes corresponding downlink data frame bits and uplink data frame bits to each slave station end according to the number of the slave station ends; wherein, the downlink data frame bit and the uplink data frame bit are respectively in one-to-one correspondence with the slave station end; the master station end generates target uplink time data according to target uplink data frame bits corresponding to the target slave station end; when the timing data and the target uplink time data are located in the target downlink data frame bit corresponding to the target slave station end, the master station end sends the timing data and the target uplink time data to the target slave station end; the target slave station end is used for timing according to the timing data and generating a target uplink data packet according to the target data to be uploaded; and when the target uplink data frame bit is positioned, the target slave station end is also used for transmitting the target uplink data packet to the master station end. By distributing the corresponding downlink data frame bit and uplink data frame bit to each slave station, the technical problem of low communication efficiency is solved, and the technical effect of being capable of rapidly and efficiently transmitting the operation and production information of the equipment is achieved.
Drawings
In order to more clearly illustrate the technical solutions of the present application, the drawings that are needed in the description of the present application will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive effort to a person skilled in the art.
Fig. 1 is a flowchart of steps of a data transmission method based on slot allocation according to an embodiment of the present application;
fig. 2 is a communication flow chart of a master station side in a data transmission method based on time slot allocation according to an embodiment of the present application;
fig. 3 is a communication flow chart of a slave station in a data transmission method based on time slot allocation according to an embodiment of the present application;
Fig. 4 is a block diagram of a data transmission device based on slot allocation according to an embodiment of the present application;
fig. 5 is a schematic structural diagram of a computer device according to an embodiment of the present application.
Detailed Description
In order that the manner in which the above recited objects, features and advantages of the present application are obtained will become more readily apparent, a more particular description of the application briefly described above will be rendered by reference to the appended drawings. It will be apparent that the described embodiments are some, but not all, embodiments of the application. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.
The inventors found by analyzing the prior art that: in the existing laser marking equipment system, the system needs to communicate with an MES system, for example, a related standard protocol is adopted, and most of the system adopts a low-speed master-slave communication mode, so that the communication efficiency is low, the high-efficiency production of equipment can be directly affected due to the fact that the system cannot be concurrent, and if the transmission efficiency can be improved by adopting a TCP/IP mode of a conversion protocol, the system resource is occupied to prepare and operate, and more part of production line equipment is not supported. Meanwhile, because of the unpredictability of the data quantity and the transmission time relative to one device, if a response type communication mode is adopted, the production takt can be influenced, and unnecessary clamping or quality problems are caused. In order to solve the above problems, a set of device capable of rapidly and efficiently transmitting operation and production information of equipment and providing protocol and information interfacing of an MES system interface under the condition of less influence on normal operation of the equipment is needed to ensure yield and production efficiency of a production line.
In any embodiment of the present application, the frame bits referred to may refer to a frame region that is continuous and contains a plurality of slot frames, or may refer to a single slot frame.
Referring to fig. 1, a data transmission method based on slot allocation according to an embodiment of the present application is shown, where the method involves a master station end and at least two slave station ends; the master station end is preset with timing data for calibrating the slave station end clock; the slave station end comprises data to be uploaded;
The method comprises the following steps:
S110, the master station end obtains the number of the slave station ends and distributes corresponding downlink data frame bits and uplink data frame bits to each slave station end according to the number of the slave station ends; wherein, the downlink data frame bit and the uplink data frame bit are respectively in one-to-one correspondence with the slave station end;
s120, the master station generates target uplink time data according to target uplink data frame bits corresponding to the target slave station;
S130, when the target downlink data frame bit corresponding to the target slave station end is located, the master station end sends the timing data and the target uplink time data to the target slave station end; the target slave station end is used for timing according to the timing data and generating a target uplink data packet according to target data to be uploaded; and when the target uplink data frame bit is positioned, the target slave station end is also used for transmitting the target uplink data packet to the master station end.
In the embodiment of the application, a low-speed master-slave communication mode is adopted aiming at the communication mode in the prior art, so that the communication efficiency is low, and the high-efficiency production of equipment can not be directly influenced due to the fact that the communication efficiency is low; although the TCP/IP mode adopting the conversion protocol can improve the transmission efficiency, the system resources are occupied for preparation and operation, and partial production line equipment is not supported; the adoption of the response type communication mode also can influence the production beat, so that unnecessary clamping or quality problems are caused. The application provides a data transmission method, a device and a system based on time slot allocation, wherein the method relates to a master station end and at least two slave station ends; the master station end is preset with timing data for calibrating the clock of the slave station end; the slave station end comprises data to be uploaded; the method comprises the following steps: the master station end obtains the number of the slave station ends and distributes corresponding downlink data frame bits and uplink data frame bits to each slave station end according to the number of the slave station ends; wherein, the downlink data frame bit and the uplink data frame bit are respectively in one-to-one correspondence with the slave station end; the master station end generates target uplink time data according to target uplink data frame bits corresponding to the target slave station end; when the timing data and the target uplink time data are located in the target downlink data frame bit corresponding to the target slave station end, the master station end sends the timing data and the target uplink time data to the target slave station end; the target slave station end is used for timing according to the timing data and generating a target uplink data packet according to the target data to be uploaded; and when the target uplink data frame bit is positioned, the target slave station end is also used for transmitting the target uplink data packet to the master station end. By distributing the corresponding downlink data frame bit and uplink data frame bit to each slave station, the technical problem of low communication efficiency is solved, and the technical effect of being capable of rapidly and efficiently transmitting the operation and production information of the equipment is achieved.
Next, a data transmission method based on slot allocation in the present exemplary embodiment will be further described.
It should be noted that, the master station may be a Field Communication Station (FCS), and is responsible for allocating and receiving information of the devices under the link and responding to the information, and meanwhile, as a link clock reference, is responsible for calibrating the clock of the link device, where the precision of the link clock may be 10ms, and in case of ultra-high speed communication, the time slot may be reduced and may be additionally agreed. The secondary site may be other field devices (FEUs) connected to the link. The data is transmitted in the form of sending the data in the time slot frame bit corresponding to each of the master station end and the slave station end, and compared with the TCP/IP conversion protocol mode, the system resource is not occupied; compared with a response type communication mode, the response time is saved, and the communication efficiency is improved.
As described in step S110, the master station obtains the number of the slave station, and allocates a corresponding downlink data frame bit and an uplink data frame bit to each of the slave station according to the number of the slave station; wherein, the downlink data frame bit and the uplink data frame bit are respectively in one-to-one correspondence with the slave station end.
It should be noted that, the corresponding downlink data frame bit and the corresponding uplink data frame bit are allocated to each slave station, which can be understood that each slave station is in a data receiving state in the downlink data frame bit and in a data transmitting state in the uplink data frame bit, so that the downlink data frame bit and the uplink data frame bit are respectively in one-to-one correspondence with the slave station. The master station end is used as equipment for distributing time slot frame bits, so that the slave station end on a link can be scheduled more flexibly, and the communication efficiency is improved.
The downlink data frame bit and the uplink data frame bit may be preset in the master station side and the slave station side, and the master station side and the slave station side may transmit data when the time slots are in the respective data frame bits.
In an embodiment of the present application, the specific process of "allocating the corresponding downlink data frame bit and uplink data frame bit to each of the slave stations according to the number of the slave stations" may be further described in conjunction with the following description.
As described in the following steps: the master station end numbers the slave station ends according to the number of the slave station ends; and the master station end distributes corresponding downlink data frame bits and uplink data frame bits to each slave station end according to the respective numbers of the slave station ends.
The corresponding downstream data frame bit and upstream data frame bit may be allocated to each slave station by the respective device number of the slave station.
In a further embodiment of the present application, the following description may be used to further describe the specific process of "allocating the corresponding downlink data frame bit and uplink data frame bit to each of the slave stations according to the respective numbers of the slave stations".
As described in the following steps: the master station end distributes corresponding uplink data frame bits to each slave station end according to the respective numbers of the slave station ends; the master station end groups the slave station ends according to the respective numbers of the slave station ends, and distributes corresponding downlink data frame bits to each slave station end according to the groups of the slave station ends.
As an example, if the number of secondary stations in the link is 40, the secondary stations may be numbered 0 to 39, then the secondary stations are grouped, the 1 st group is 0 to 4, the 2 nd group is 5 to 9, and so on, each number of the secondary stations corresponds to one target uplink data frame bit, and each group of the secondary stations corresponds to one downlink data frame bit; and when the data is in the corresponding downlink data frame bit, the master station end transmits the timing data and the target uplink time data to a plurality of target slave station ends in the same group.
As an example, a slot allocation manner in which a minute-level period is repeated, specifically: in a slot period, 60 transmission slot frame bits are taken as a unit of seconds, if the transmission rate of the link layer is increased, the slot period can be correspondingly shortened, but the division number is unchanged. The 1 st slot frame bit corresponds to a physical time of 0-1 second, and so on the 60 th slot frame bit corresponds to a physical time of 59-60 seconds. The 1 st to 15 th time slot frame bit is a master station transmitting frame bit, the master station transmits data frames in the 1 st, 4 th, 7 th, 10 th and 12 th time slot frame bits in the conventional case, each time slot frame bit is responsible for completing communication response of 8 slave stations, and if emergency occurs, the 15 th time slot can be used as a reissue data frame if the reissue content of the slave stations is required. The 16 th to 18 th slot frame bits are used for deactivation or emergency reservation. Slot 20 is the slave station 0 transmitting data, slot 21 is the slave station 1 transmitting data, and so on, until slot 59 is the slave station 39 transmitting data. It will be appreciated that in this example the link maximum number of bearer slaves is 40.
As described in step S120, the master station generates target uplink time data according to the target uplink data frame bit corresponding to the target slave station.
It should be noted that, the difference between the preset timing data and the generation of the target uplink time data should be explicitly determined: the preset timing data aims at synchronously calibrating the clock of the target slave station end and the clock of the master station end to ensure the precision of the clock in the communication link, and the purpose of generating the target uplink time data is to pack the allocated uplink data frame bits in the form of data packets and send the data packets to the target slave station end, so that the target slave station end can acquire the corresponding uplink data frame bits.
As described in step S130, when the master station end is in the target downlink data frame bit corresponding to the target slave station end, the master station end sends the timing data and the target uplink time data to the target slave station end; the target slave station end is used for timing according to the timing data and generating a target uplink data packet according to target data to be uploaded; and when the target uplink data frame bit is positioned, the target slave station end is also used for transmitting the target uplink data packet to the master station end.
It should be noted that, the data to be uploaded may include operation information, system prompt, process parameters, and finished product information of the slave station device, and when the target uplink data packet is sent to the master station, it may be understood that one communication is completed. The slave station can send data according to the working state and configuration content of the slave station, and the corresponding relation between the data content and the MES requirement can be analyzed by the master station (FCS).
It should be noted that, when the master station transmits the timing data and the target uplink time data to the target slave station, other information may also be synchronously transmitted to the target slave station, which should not be construed as limiting the type of data to be transmitted.
In a specific embodiment of the present application, referring to fig. 2, a communication flow chart of a master station is shown, where the master station can obtain the number of slave stations in a link when reading a system configuration, if a communication time slot at the master station is first started, the master station performs broadcast timing on all the slave stations in the link, and if timing is successful, prepares to receive data sent by the slave stations at the communication time slot at the slave stations; when the data of the slave station end is successfully received, the master station end sorts the data and uploads the data to the MES system.
In a specific embodiment of the present application, referring to fig. 3, a communication flow of a slave station is shown, when the slave station receives timing data sent by a master station, the slave station determines whether to retransmit the data, if yes, the last group of data is added and a time stamp is added to the data; if not, directly adding a time stamp to the data; and when the communication time slot of the slave station is in, the slave station transmits data to the master station.
In a specific embodiment of the present application, the data sent from the master station to the slave station may be sent in the form of the same data packet, and the data packet is illustrated as a 16-system data packet, specifically:
as an example, the first downlink data packet DF1 may be used for data reception status confirmation, and the data packet structure of the first downlink data packet DF1 may be as shown in the following table:
As an example, the second downstream packet DF2 may be used for timing or broadcasting, and the packet structure of the second downstream packet DF2 may be as shown in the following table:
In a specific embodiment of the present application, the data sent from the secondary station to the primary station may be sent in the form of the same data packet, and the data packet is illustrated as a 16-system data packet, specifically:
As an example, the packet structure of the first upstream packet UF1 may be as shown in the following table:
as an example, the second upstream data packet UF2 may be used for timing or initialization feedback, and the packet structure of the second upstream data packet UF2 may be as shown in the following table:
when the timing is performed for only seconds and milliseconds, the hour bit and the minute bit may be replaced with 0xff, and the timing for hours and minutes is not required, so that the communication efficiency is improved. In order to improve the communication efficiency, the data packet may be only provided with 5 data lengths, which are respectively: 20bytes,2kbytes,4kbytes,8kbytes,12kbytes, wherein the portion of the data size less than the data length is replaced with 0 xFF.
It should be noted that, the following table shows the corresponding description of each data type in the data packet:
In a specific embodiment of the present application, the master station end may adopt a system architecture compatible with the RS485 physical layer, and a serial-parallel port or a network interface of the TCP/IP physical layer connectable device, the transmission rate may be preset to 119200bps, and the timeout period may be preset to 50ms. Under the standard RS485 communication protocol, the communication physical environment is preferably: the communication length is not more than 1200 m, the communication is realized by adopting a double-wire shielding cable, and the cross section area of a communication line is not less than 0.5 mm.
In a specific embodiment of the present application, when the slave station end does not have timing, the slave station end shall actively perform timing when receiving complete timing data, whether the transmission target of the timing data is to be sent to the slave station end itself or not; the secondary station after the time correction can ignore the time correction frame data sent by the primary station to other secondary stations; if all the slave stations receive the broadcasted timing frame, the slave stations perform subsequent data transmission after priority timing.
In a specific embodiment of the present application, the secondary station end that has successfully calibrated time can only monitor the downlink frame bit and the corresponding uplink frame bit, without monitoring other frame bits in the time slot; and when no response is received from 3 times of communication, entering into time-correcting full-time domain monitoring.
In one embodiment of the present application, a field device (FEU) in device communication uses an interrupt mode to receive corresponding data, and the new thread performs data processing and records that the processing duration increases to a data frame millisecond check bit in units of 10 ms.
In one embodiment of the application, the method further involves the MES end;
the method further comprises the steps of:
And when the target uplink data packet is received, the master station end sends the target uplink data packet to the MES end.
Note that MES (manufacturing execution system Manufacturing Execution System) is a production management system.
The embodiment of the application also provides a data transmission method based on time slot allocation, which relates to a master station end and at least two slave station ends; the master station end is preset with timing data for calibrating the slave station end clock; the slave station end comprises data to be uploaded; the master station end is used for acquiring the number of the slave station ends and distributing corresponding downlink data frame bits and uplink data frame bits to each slave station end according to the number of the slave station ends; wherein, the downlink data frame bit and the uplink data frame bit are respectively in one-to-one correspondence with the slave station end; the master station end is also used for generating target uplink time data according to the target uplink data frame bit corresponding to the target slave station end; when the master station is positioned at the target downlink data frame bit corresponding to the target slave station, the master station is also used for transmitting the timing data and the target uplink time data to the target slave station;
The method comprises the following steps:
the target slave station terminal performs timing according to the timing data and generates a target uplink data packet according to target data to be uploaded;
And when the target uplink data frame bit is positioned, the target slave station end transmits the target uplink data packet to the master station end.
In the embodiment of the application, the target slave station can send the target uplink data packet according to the target uplink data frame bit, the target slave station does not need to respond to the target uplink time data pair, the technical problem of low communication efficiency is solved, and the technical effect of rapidly and efficiently transmitting the operation and production information of the equipment is achieved.
In an embodiment of the present application, the step of generating the target uplink data packet according to the target data to be uploaded includes:
and generating a target uplink data packet by marking a time stamp according to the target data to be uploaded.
The foregoing is a description of a method embodiment of the present application that is relatively simple to describe as it is substantially similar to a method embodiment for an apparatus or system embodiment, as the relevant points are merely set forth in the description of the method embodiment.
Referring to fig. 4, there is shown a data transmission apparatus based on slot allocation according to an embodiment of the present application, the apparatus relates to a master station side and at least two slave station sides; the master station end is preset with timing data for calibrating the slave station end clock; the slave station end comprises data to be uploaded;
The device comprises:
A frame bit allocation module 1110, configured to obtain the number of the slave station ends, and allocate corresponding downlink data frame bits and uplink data frame bits to each of the slave station ends according to the number of the slave station ends; wherein, the downlink data frame bit and the uplink data frame bit are respectively in one-to-one correspondence with the slave station end;
the target uplink time data generating module 1120 is configured to generate target uplink time data according to a target uplink data frame bit corresponding to the target slave station end;
A target uplink time data sending module 1130, configured to send the timing data and the target uplink time data to the target slave station when the timing data is in a target downlink data frame bit corresponding to the target slave station; the target slave station end is used for timing according to the timing data and generating a target uplink data packet according to target data to be uploaded; and when the target uplink data frame bit is positioned, the target slave station end is also used for transmitting the target uplink data packet to the master station end.
In one embodiment of the present application, the frame bit allocation module 1110 includes:
The coding sub-module is used for numbering the slave station ends according to the number of the slave station ends;
And the frame bit allocation submodule is used for allocating corresponding downlink data frame bits and uplink data frame bits to each slave station according to the respective numbers of the slave station.
In a further embodiment of the present application, the frame bit allocation submodule includes:
An uplink data frame bit allocation submodule, configured to allocate a corresponding uplink data frame bit to each slave station according to the respective number of the slave station;
and the downlink data frame bit allocation submodule is used for grouping the slave station ends according to the respective numbers of the slave station ends and allocating corresponding downlink data frame bits to each slave station end according to the grouping of the slave station ends.
In an embodiment of the application, the apparatus further comprises:
And the second target uplink data packet sending module is used for sending the target uplink data packet to the MES end when the target uplink data packet is received.
The embodiment of the application also provides a data transmission device based on time slot allocation, which relates to a master station end and at least two slave station ends; the master station end is preset with timing data for calibrating the slave station end clock; the slave station end comprises data to be uploaded; the master station end is used for acquiring the number of the slave station ends and distributing corresponding downlink data frame bits and uplink data frame bits to each slave station end according to the number of the slave station ends; wherein, the downlink data frame bit and the uplink data frame bit are respectively in one-to-one correspondence with the slave station end; the master station end is also used for generating target uplink time data according to the target uplink data frame bit corresponding to the target slave station end; when the master station is positioned at the target downlink data frame bit corresponding to the target slave station, the master station is also used for transmitting the timing data and the target uplink time data to the target slave station;
The device comprises:
The target uplink data packet generating module is used for timing according to the timing data and generating a target uplink data packet according to target data to be uploaded;
And the first target uplink data packet sending module is used for sending the target uplink data packet to the master station when the target uplink data packet is in the target uplink data frame bit.
In an embodiment of the present application, the target uplink packet generation module includes:
And the timestamp marking sub-module is used for generating a target uplink data packet through the timestamp marking according to the target data to be uploaded.
The embodiment of the application also provides a data transmission system based on time slot allocation, which relates to a master station end and at least two slave station ends; the master station end is preset with timing data for calibrating the slave station end clock; the slave station end comprises data to be uploaded;
the system comprises:
the master station end is used for acquiring the number of the slave station ends and distributing corresponding downlink data frame bits and uplink data frame bits to each slave station end according to the number of the slave station ends; wherein, the downlink data frame bit and the uplink data frame bit are respectively in one-to-one correspondence with the slave station end;
the master station end is also used for generating target uplink time data according to the target uplink data frame bit corresponding to the target slave station end;
When the master station is positioned at the target downlink data frame bit corresponding to the target slave station, the master station is also used for transmitting the timing data and the target uplink time data to the target slave station;
The target slave station end is used for timing according to the timing data and generating a target uplink data packet according to target data to be uploaded;
And when the target uplink data frame bit is positioned, the target slave station end is also used for transmitting the target uplink data packet to the master station end.
In one embodiment of the application, the system further involves an MES end;
The system further comprises:
And when the target uplink data packet is received, the master station end is also used for sending the target uplink data packet to the MES end.
Referring to fig. 5, a computer device for performing a data transmission method based on slot allocation according to the present application may specifically include the following:
The computer device 12 described above is embodied in the form of a general purpose computing device, and the components of the computer device 12 may include, but are not limited to: one or more processors or processing units 16, a system memory 28, a bus 18 that connects the various system components, including the system memory 28 and the processing units 16.
Bus 18 represents one or more of several types of bus 18 structures, including a memory bus 18 or memory controller, a peripheral bus 18, an accelerated graphics port, a processor, or a local bus 18 using any of a variety of bus 18 architectures. By way of example, and not limitation, such architectures include Industry Standard Architecture (ISA) bus 18, micro channel architecture (MAC) bus 18, enhanced ISA bus 18, video Electronics Standards Association (VESA) local bus 18, and Peripheral Component Interconnect (PCI) bus 18.
Computer device 12 typically includes a variety of computer system readable media. Such media can be any available media that is accessible by computer device 12 and includes both volatile and nonvolatile media, removable and non-removable media.
The system memory 28 may include computer system readable media in the form of volatile memory, such as Random Access Memory (RAM) 30 and/or cache memory 32. The computer device 12 may further include other removable/non-removable, volatile/nonvolatile computer storage media. By way of example only, storage system 34 may be used to read from or write to non-removable, nonvolatile magnetic media (commonly referred to as a "hard disk drive"). Although not shown in fig. 5, a magnetic disk drive for reading from and writing to a removable non-volatile magnetic disk (e.g., a "floppy disk"), and an optical disk drive for reading from or writing to a removable non-volatile optical disk such as a CD-ROM, DVD-ROM, or other optical media may be provided. In such cases, each drive may be coupled to bus 18 through one or more data medium interfaces. The memory may include at least one program product having a set (e.g., at least one) of program modules 42, the program modules 42 being configured to carry out the functions of embodiments of the invention.
A program/utility 40 having a set (at least one) of program modules 42 may be stored in, for example, a memory, such program modules 42 including, but not limited to, an operating system, one or more application programs, other program modules 42, and program data, each or some combination of which may include an implementation of a network environment. Program modules 42 generally perform the functions and/or methods of the embodiments described herein.
The computer device 12 may also communicate with one or more external devices 14 (e.g., keyboard, pointing device, display 24, camera, etc.), one or more devices that enable a user to interact with the computer device 12, and/or any devices (e.g., network card, modem, etc.) that enable the computer device 12 to communicate with one or more other computing devices. Such communication may occur through an input/output (I/O) interface 22. Moreover, computer device 12 may also communicate with one or more networks such as a Local Area Network (LAN), a Wide Area Network (WAN), and/or a public network such as the Internet, through network adapter 20. As shown, network adapter 20 communicates with other modules of computer device 12 via bus 18. It should be appreciated that although not shown in fig. 5, other hardware and/or software modules may be used in connection with computer device 12, including, but not limited to: microcode, device drivers, redundant processing units 16, external disk drive arrays, RAID systems, tape drives, data backup storage systems 34, and the like.
The processing unit 16 executes various functional applications and data processing by running programs stored in the system memory 28, for example, implementing a data transmission method based on slot allocation provided by an embodiment of the present invention.
That is, the processing unit 16 realizes when executing the program: the master station end obtains the number of the slave station ends and distributes corresponding downlink data frame bits and uplink data frame bits to each slave station end according to the number of the slave station ends; wherein, the downlink data frame bit and the uplink data frame bit are respectively in one-to-one correspondence with the slave station end; the master station end generates target uplink time data according to target uplink data frame bits corresponding to the target slave station end; when the data is in a target downlink data frame bit corresponding to the target slave station end, the master station end sends the timing data and the target uplink time data to the target slave station end; the target slave station end is used for timing according to the timing data and generating a target uplink data packet according to target data to be uploaded; and when the target uplink data frame bit is positioned, the target slave station end is also used for transmitting the target uplink data packet to the master station end.
In an embodiment of the present application, the present application further provides a computer readable storage medium having stored thereon a computer program which, when executed by a processor, implements a data transmission method based on slot allocation as provided in all embodiments of the present application:
That is, the program is implemented when executed by a processor: the master station end obtains the number of the slave station ends and distributes corresponding downlink data frame bits and uplink data frame bits to each slave station end according to the number of the slave station ends; wherein, the downlink data frame bit and the uplink data frame bit are respectively in one-to-one correspondence with the slave station end; the master station end generates target uplink time data according to target uplink data frame bits corresponding to the target slave station end; when the data is in a target downlink data frame bit corresponding to the target slave station end, the master station end sends the timing data and the target uplink time data to the target slave station end; the target slave station end is used for timing according to the timing data and generating a target uplink data packet according to target data to be uploaded; and when the target uplink data frame bit is positioned, the target slave station end is also used for transmitting the target uplink data packet to the master station end.
Any combination of one or more computer readable media may be employed. The computer readable medium may be a computer-readable signal medium or a computer-readable storage medium. The computer readable storage medium can be, for example, but not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or a combination of any of the foregoing. More specific examples (a non-exhaustive list) of the computer-readable storage medium would include the following: an electrical connection having one or more wires, a portable computer diskette, a hard disk, a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disc read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing. In this document, a computer readable storage medium may be any tangible medium that can contain, or store a program for use by or in connection with an instruction execution system, apparatus, or device.
The computer readable signal medium may include a propagated data signal with computer readable program code embodied therein, either in baseband or as part of a carrier wave. Such a propagated data signal may take any of a variety of forms, including, but not limited to, electro-magnetic, optical, or any suitable combination of the foregoing. A computer readable signal medium may also be any computer readable medium that is not a computer readable storage medium and that can communicate, propagate, or transport a program for use by or in connection with an instruction execution system, apparatus, or device.
Computer program code for carrying out operations of the present invention may be written in any combination of one or more programming languages, including an object oriented programming language such as Java, smalltalk, C ++ and conventional procedural programming languages, such as the "C" programming language or similar programming languages. The program code may execute entirely on the user's computer, partly on the user's computer, as a stand-alone software package, partly on the user's computer and partly on a remote computer or entirely on the remote computer or server. In the case of a remote computer, the remote computer may be connected to the user's computer through any kind of network, including a Local Area Network (LAN) or a Wide Area Network (WAN), or may be connected to an external computer (for example, through the Internet using an Internet service provider). In this specification, each embodiment is described in a progressive manner, and each embodiment is mainly described by differences from other embodiments, and identical and similar parts between the embodiments are all enough to be referred to each other.
While preferred embodiments of the present application have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. It is therefore intended that the following claims be interpreted as including the preferred embodiment and all such alterations and modifications as fall within the scope of the embodiments of the application.
Finally, it is further noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or terminal that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or terminal. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or terminal device that comprises the element.
The above description is made in detail on a data transmission method, device and system based on time slot allocation, and specific examples are applied to illustrate the principle and implementation of the present application, and the above description of the embodiments is only used to help understand the method and core idea of the present application; meanwhile, as those skilled in the art will have variations in the specific embodiments and application scope in light of the ideas of the present application, the present description should not be construed as limiting the present application.
Claims (8)
1. A data transmission method based on time slot allocation, characterized in that the method involves a master station end and at least two slave station ends; the master station end is preset with timing data for calibrating the slave station end clock; the slave station end comprises data to be uploaded;
The method comprises the following steps:
The master station end obtains the number of the slave station ends and distributes corresponding downlink data frame bits and uplink data frame bits to each slave station end according to the number of the slave station ends; wherein, the downlink data frame bit and the uplink data frame bit are respectively in one-to-one correspondence with the slave station end; the master station end numbers the slave station ends according to the number of the slave station ends; the master station end distributes corresponding uplink data frame bits to each slave station end according to the respective numbers of the slave station ends; the master station end groups the slave station ends according to the respective numbers of the slave station ends, and distributes corresponding downlink data frame bits to each slave station end according to the groups of the slave station ends;
the master station end generates target uplink time data according to target uplink data frame bits corresponding to the target slave station end;
when the data is in a target downlink data frame bit corresponding to the target slave station end, the master station end sends the timing data and the target uplink time data to the target slave station end; the target slave station end is used for timing according to the timing data and generating a target uplink data packet according to target data to be uploaded; and when the target uplink data frame bit is positioned, the target slave station end is also used for transmitting the target uplink data packet to the master station end.
2. The method of claim 1, wherein the method further involves a MES end; wherein the MES end is a manufacturing execution system;
the method further comprises the steps of:
And when the target uplink data packet is received, the master station end sends the target uplink data packet to the MES end.
3. A data transmission method based on time slot allocation, characterized in that the method involves a master station end and at least two slave station ends; the master station end is preset with timing data for calibrating the slave station end clock; the slave station end comprises data to be uploaded; the master station end is used for acquiring the number of the slave station ends and distributing corresponding downlink data frame bits and uplink data frame bits to each slave station end according to the number of the slave station ends; wherein, the downlink data frame bit and the uplink data frame bit are respectively in one-to-one correspondence with the slave station end; the master station end numbers the slave station ends according to the number of the slave station ends; the master station end distributes corresponding uplink data frame bits to each slave station end according to the respective numbers of the slave station ends; the master station end groups the slave station ends according to the respective numbers of the slave station ends, and distributes corresponding downlink data frame bits to each slave station end according to the groups of the slave station ends; the master station end is also used for generating target uplink time data according to the target uplink data frame bit corresponding to the target slave station end; when the master station is positioned at the target downlink data frame bit corresponding to the target slave station, the master station is also used for transmitting the timing data and the target uplink time data to the target slave station;
The method comprises the following steps:
When the slave station end receives the timing data under the condition that the slave station end does not have timing, the target slave station end performs timing according to the timing data and generates a target uplink data packet according to target data to be uploaded;
And when the target uplink data frame bit is positioned, the target slave station end transmits the target uplink data packet to the master station end.
4. A method according to claim 3, wherein the step of generating the target upstream data packet from the target data to be uploaded comprises:
and generating a target uplink data packet by marking a time stamp according to the target data to be uploaded.
5. A data transmission device based on time slot allocation, characterized in that the device relates to a master station end and at least two slave station ends; the master station end is preset with timing data for calibrating the slave station end clock; the slave station end comprises data to be uploaded;
The device comprises:
The frame bit allocation module is used for acquiring the number of the slave station ends and allocating corresponding downlink data frame bits and uplink data frame bits to each slave station end according to the number of the slave station ends; wherein, the downlink data frame bit and the uplink data frame bit are respectively in one-to-one correspondence with the slave station end; the master station end numbers the slave station ends according to the number of the slave station ends; the master station end distributes corresponding uplink data frame bits to each slave station end according to the respective numbers of the slave station ends; the master station end groups the slave station ends according to the respective numbers of the slave station ends, and distributes corresponding downlink data frame bits to each slave station end according to the groups of the slave station ends;
The target uplink time data generation module is used for generating target uplink time data according to target uplink data frame bits corresponding to the target slave station end;
The target uplink time data transmitting module is used for transmitting the timing data and the target uplink time data to the target slave station when the target uplink time data is positioned at a target downlink data frame bit corresponding to the target slave station; the target slave station end is used for timing according to the timing data and generating a target uplink data packet according to target data to be uploaded; and when the target uplink data frame bit is positioned, the target slave station end is also used for transmitting the target uplink data packet to the master station end.
6. A data transmission device based on time slot allocation, characterized in that the device relates to a master station end and at least two slave station ends; the master station end is preset with timing data for calibrating the slave station end clock; the slave station end comprises data to be uploaded; the master station end is used for acquiring the number of the slave station ends and distributing corresponding downlink data frame bits and uplink data frame bits to each slave station end according to the number of the slave station ends; wherein, the downlink data frame bit and the uplink data frame bit are respectively in one-to-one correspondence with the slave station end; the master station end numbers the slave station ends according to the number of the slave station ends; the master station end distributes corresponding uplink data frame bits to each slave station end according to the respective numbers of the slave station ends; the master station end groups the slave station ends according to the respective numbers of the slave station ends, and distributes corresponding downlink data frame bits to each slave station end according to the groups of the slave station ends; the master station end is also used for generating target uplink time data according to the target uplink data frame bit corresponding to the target slave station end; when the master station is positioned at the target downlink data frame bit corresponding to the target slave station, the master station is also used for transmitting the timing data and the target uplink time data to the target slave station;
The device comprises:
The target uplink data packet generating module is used for timing according to the timing data and generating a target uplink data packet according to target data to be uploaded;
And the first target uplink data packet sending module is used for sending the target uplink data packet to the master station when the target uplink data packet is in the target uplink data frame bit.
7. A data transmission system based on time slot allocation, characterized in that the system comprises a master station end and at least two slave station ends; the master station end is preset with timing data for calibrating the slave station end clock; the slave station end comprises data to be uploaded;
the system comprises:
The master station end is used for acquiring the number of the slave station ends and distributing corresponding downlink data frame bits and uplink data frame bits to each slave station end according to the number of the slave station ends; wherein, the downlink data frame bit and the uplink data frame bit are respectively in one-to-one correspondence with the slave station end; the master station end numbers the slave station ends according to the number of the slave station ends; the master station end distributes corresponding uplink data frame bits to each slave station end according to the respective numbers of the slave station ends; the master station end groups the slave station ends according to the respective numbers of the slave station ends, and distributes corresponding downlink data frame bits to each slave station end according to the groups of the slave station ends;
the master station end is also used for generating target uplink time data according to the target uplink data frame bit corresponding to the target slave station end;
When the master station is positioned at the target downlink data frame bit corresponding to the target slave station, the master station is also used for transmitting the timing data and the target uplink time data to the target slave station;
The target slave station end is used for timing according to the timing data and generating a target uplink data packet according to target data to be uploaded;
And when the target uplink data frame bit is positioned, the target slave station end is also used for transmitting the target uplink data packet to the master station end.
8. The system of claim 7, wherein the system further involves a MES end; wherein the MES end is a manufacturing execution system;
The system further comprises:
And when the target uplink data packet is received, the master station end is also used for sending the target uplink data packet to the MES end.
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