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Method and device for data transmission

A data transmission and data technology, applied in the field of data transmission, can solve the problem of low real-time data transmission, and achieve the effect of reducing redundant data, improving the quality of CAN communication, and reducing the burden of data transmission

Active Publication Date: 2017-10-03
GREE ELECTRIC APPLIANCES INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The main purpose of the present invention is to provide a method and device for data transmission, to at least solve the technical problem of low real-time data transmission due to the fact that the bus is in a full load state when multiple nodes periodically send data

Method used

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  • Method and device for data transmission
  • Method and device for data transmission

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Experimental program
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Embodiment 1

[0035] According to Embodiment 1 of the present invention, a data transmission method embodiment is provided. It should be noted that the steps shown in the flow charts of the accompanying drawings can be executed in a computer system such as a set of computer-executable instructions, and, Although a logical order is shown in the flowcharts, in some cases the steps shown or described may be performed in an order different from that shown or described herein.

[0036] figure 1 is a flow chart of a data transmission method according to Embodiment 1 of the present invention, such as figure 1 As shown, the data transmission method mainly includes the following steps S12 to S16:

[0037] S12: After the device node starts communication, read the first timing time of the device node at the current moment.

[0038] In the embodiment of the present invention, the nodes of the communication network can be divided into main device nodes and sub-device nodes, the main device node can be...

Embodiment 2

[0111] According to an embodiment of the present invention, a device for data transmission is also provided. The device for data transmission is mainly used to implement the method for data transmission provided in the above-mentioned content of the embodiment of the present invention. The following describes the data transmission provided by the embodiment of the present invention The device will be introduced in detail, and what has already been explained will not be repeated.

[0112] Figure 5 is a schematic diagram of a data transmission device according to Embodiment 2 of the present invention, such as Figure 5 As shown, the data transmission device mainly includes a first acquisition module 10, a first sending module 20 and a second sending module 30, wherein:

[0113] The first acquisition module 10 is configured to read the first counting time of the device node at the current moment after the device node starts communication.

[0114] In the embodiment of the pres...

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PUM

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Abstract

The invention discloses a data transmission method and device. Wherein, the method includes: after the device node starts communication, reading the first timing time of the device node at the current moment; Data; when the first timing time does not reach the first sending cycle, read the second timing time accumulated by the device node at the current moment, and when the second timing time reaches the preset second sending cycle, send the device node’s The second data to be transmitted, wherein the second sending period is shorter than the first sending period. The invention solves the technical problem of low real-time performance of data transmission due to the fact that the bus is in a full load state when multiple nodes periodically send data.

Description

technical field [0001] The present invention relates to the communication field, in particular, to a data transmission method and device. Background technique [0002] Controller Area Network (CAN for short) is one of the most widely used field buses at present. The CAN bus is a serial communication bus that effectively supports distributed control or real-time control. The distributed control system built by the CAN bus has the advantage of strong real-time data communication between each node device. In the distributed control system built by the CAN bus, each device node can actively send information to other device nodes at any time , according to the priority order of the information sent by each device node to determine the communication order. In one application scenario, when the main device node and the sub-device node are connected, the main device node periodically sends control data to the sub-device node, and the sub-device node periodically reports its own sta...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G05B19/418H04L12/40H04L12/403
CPCY02P90/02
Inventor 孙方华王文灿邓忠文唐杰邹皇英张景博
Owner GREE ELECTRIC APPLIANCES INC
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