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Method for determining network address of node equipment, node equipment and control system

A technology of node equipment and network addresses, applied in transmission systems, electrical components, etc., can solve problems such as communication failures and system failures, and achieve the effect of improving fault tolerance, efficiency, service life and utilization.

Active Publication Date: 2020-05-15
GREE ELECTRIC APPLIANCES INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method can be automatically assigned without manual settings, and it is easy to expand, which is a good solution to the scalability problem. However, since the device network address is allocated by the host, if the bus host is disconnected or the host is abnormal, other node devices cannot Obtaining the network address of the device leads to communication failure, and the system cannot work normally

Method used

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  • Method for determining network address of node equipment, node equipment and control system
  • Method for determining network address of node equipment, node equipment and control system
  • Method for determining network address of node equipment, node equipment and control system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Embodiment 1 of the present invention provides a method for determining the network address of a node device, such as figure 2 As shown in method 200, including:

[0034] Step S202: receiving MAC address information sent by the node device;

[0035] When the whole machine is powered on, or when the system enters addressing, all node devices in the system will send their own MAC address information to the system bus, and at the same time, receive MAC address information sent by other node devices. The MAC address information is a unique physical identification number of the node device, such as: 44-45-53-54-00-00, and the MAC address information is a unique serial number in the world, so as to distinguish different devices.

[0036] Step S204: performing one-to-one matching of the received MAC address information and its own MAC address information with the network addresses in the node device address pool;

[0037] After the node device receives the MAC address infor...

Embodiment 2

[0049] Embodiment 2 of the present invention proposes a method for determining the network address of a node device, such as image 3 As shown in method 300, including:

[0050]Step S301: Send a MAC address information request message to the node device on the bus;

[0051] When the whole machine is powered on, or the system enters addressing, the node device sends a MAC address information request message to the node devices on the bus, and all node devices that receive the MAC address information request message send their own MAC address information to the node equipment.

[0052] When the system is working, when a new node device is connected, the node device can obtain the MAC address of other node devices by sending a MAC address information request, which can prevent the node device from continuously sending MAC address information, and only needs to receive This information is not sent until the MAC address is requested.

[0053] Of course, optionally, when the node...

Embodiment 3

[0063] Embodiment 3 of the present invention provides a method for determining the network address of a node device, such as Figure 4 The methods shown in 300 include:

[0064] Step S401: Send a MAC address information request message to the node device on the bus;

[0065] The working method of this step is the same as that of step S301, and will not be repeated here.

[0066] Step 4021: start the timer;

[0067] After the node device sends the address information request, a timer is started, and the timer is used to determine whether the node device continues to receive MAC address information of other node devices on the bus. The timing duration of the timer is set by the node device itself, or it can be set uniformly by the system.

[0068] Of course, the timer may not be used here, for example: after the node device determines to receive the MAC address information of all node devices, it will automatically stop receiving; or, when the node device does not receive MAC...

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Abstract

The present invention relates to the technical field of network node equipment control, and provides a method for determining the network address of a node equipment, comprising: receiving MAC address information sent by the node equipment; combining the received MAC address information and its own MAC address information with the node equipment address pool One-to-one matching is performed on the network address in the network address; the network address of the node device is determined according to the matching result. Through this method, each node device calculates and allocates the network address by itself, thereby improving the service life and utilization rate of the unit. When the unit When there are multiple devices, the damage of one device will not affect the normal operation of other devices.

Description

【Technical field】 [0001] The invention relates to the technical field of network node equipment control, in particular to a method for determining the network address of the node equipment, the node equipment and a control system. 【Background technique】 [0002] In large buildings or inside equipment, multi-node equipment often communicates, or the general controller needs to control and operate each node equipment. Bus technology is a commonly used equipment control technology. In these scenarios The application is very extensive. Taking CAN controller area network (Controller Area Network) as an example, it has a very wide range of applications in automotive computer control systems, air conditioning control systems and other smart home control systems. [0003] Let's take the application of CAN bus in air conditioning system as an example, such as figure 1 As shown, it is an architecture diagram of an air conditioning system in the prior art, including system 1 and syst...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L29/12
CPCH04L2101/622
Inventor 刘华黄强唐杰王文灿
Owner GREE ELECTRIC APPLIANCES INC