Mechanical vibration monitoring special-purposed wireless sensor network node

Abstract

The invention relates to a mechanical vibration monitoring special-purposed wireless sensor network node comprising an acceleration sensor, a processor I, a processor II, an acquisition module, a power supply module, and a storage module. A data output end of the acceleration sensor is connected with the acquisition module. The acquisition module carried out data processing, and sends the data to the processor I. The processor I stores the data in the storage module, and processes the data. The processor I and the processor II carry out data exchange. The processor II is in charge of the operation of wireless communication protocol, and is used for completing node ad-hoc network, time synchronization and data transceiver tasks. The power supply module supplies power for the processor I, the processor II, and the storage module. With the network node provided by the invention, a basic hardware platform is provided for applying wireless sensor network technology in mechanical vibration monitoring.

Description

technical field [0001] The invention relates to the field of wireless sensors, in particular to a wireless sensor network node for mechanical vibration monitoring. Background technique [0002] The reliability, availability, safety and maintainability of mechanical equipment, especially large-scale key equipment, are related to the production efficiency of enterprises and the safety of people's lives and property. In order to prevent mechanical equipment failures, more and more industrial enterprises use mechanical vibration monitoring systems to monitor key equipment. Various mechanical vibration monitoring systems have been introduced at home and abroad, which guarantee the safety of key mechanical equipment to a certain extent. and stable operation. Most of the existing mature mechanical vibration monitoring systems use wired methods to connect sensors, signal conditioning equipment, and data acquisition equipment. This data acquisition method has many connections, compl...

AI Technical Summary

Problems solved by technology

[0005] 1. Most of the existing wireless sensor network applications and most of their nodes do not require high synchronization accuracy or even require multi-node synchronous collection, while mechanical vibration data collection often requires multiple measurement points for data collection synchronously, requiring nodes to have high Time Synchronization Protocol and Synchronization Acquisition Method with Precision and Low Power Consumption

[0006] 2. Most of the existing nodes are aimed at the collection and transmission of a small amount of data, while the mechanical vibration monitoring wireless sensor network often needs to transmit large original data blocks to the upper network. Even if a fragment is lost during the transmission process, the analysis results may be greatly affected. Therefore, the problem of reliable transmission of large amounts of data in low-power wireless networks must be solved

[0007] 3. Most of the existing wireless sensor network nodes are not equipped with vibration signal sensors or equipped with sensors with narrow frequency bands (≤200Hz), which can only meet the pick-up of low-frequency structural vibration signals such as bridges and buildings, and cannot be used for relatively high frequency mechanical vibration signal pickup

[0008] 4. Most of the existing nodes have small data storage space and slow data access speed

High-speed and high-precision data acquisition will inevitably generate a large amount of data in a short period of time. In the process of continuous data acquisition, small storage space will easily cause storage overflow and data loss. If the storage system writes too slowly, data will not be cached in time and will be lost.

Images