A wireless routing method and wireless meter reading system

Abstract

The invention discloses a wireless routing method. The method comprises: 1) sending request data packets by a root node to branch nodes one by one, and, if the branch nodes returns responses in an overtime time interval, marking the branch nodes as one-time reachable nodes; 2) if the number of the non-reachable branch nodes is 0, returning to a step 3), and, if the number of the non-reachable branch nodes is not 0, sending the request data packets by the root node to all the one-time reachable nodes, and setting the one-time reachable node, which can reach the most branch nodes, as a first-stage forwarding node and the branch nodes of the first-stage forwarding node as two-time reachable nodes; and 3) performing successive executions according to the step 2) until the number of the non-reachable branch nodes is 0 or the number of the forwarding nodes reaches the largest forwarding stage number N, and setting a current route as the best route. The method and the system can be used in meter-reading operation of multiple kinds of residential meters such as an electricity meter, a water meter and a gas meter, the meter-reading speed is fast, the success rate of meter reading is high, the adaptability is high, and real-time performance and other requirements of the meter reading can be satisfied.

Description

technical field [0001] The invention belongs to the technical field of measurement systems, and in particular relates to a wireless routing method and a wireless meter reading system. Background technique [0002] At present, in the field of intelligent centralized reading of water meters, electricity meters, and natural gas meters, the automatic meter reading system adopts a large number of wired meter reading technologies, including: (1) using power carrier technology to realize automatic meter reading. This technology has a slow meter reading speed, the power line is easily affected by clutter, the success rate of meter reading is not high, the adaptability is poor, and it is easy to form "communication islands", which cannot meet the real-time and reliability requirements of meter reading. (2) Wired communication networks based on technologies such as RS232 or RS485 have problems such as complex network construction, difficult deployment, and poor maintainability. Commu...

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a wireless routing method and a wireless meter reading system for the meter reading system. The present invention avoids the problems existing in the existing wired meter reading technology and communication technologies such as wireless local area networks and personal area networks. At the same time, it effectively solves the technical problem that the short-distance wireless data transmission module below 1GHz cannot be networked. It also fully considers the characteristics of the physical location of the meter equipment in the field of centralized reading in a "band" distribution, and is compatible with the existing wired communication network. The characteristics of data interaction

Images