液力耦合器监测系统的设计和实现

Hydraulic Coupler Monitoring System

为了及时发现并解决液力耦合器机组在工作时出现的故障问题,降低故障带来的设备损耗,并减少重大故障出现的概率,开发了液力耦合器状态监测系统。采用创新设计的基于射频通信的内置式传感器,准确监测耦合器腔体内部温度、压强关键参数,并设计传感器温度比例微分算法,以解决传感器温度滞后问题。采用Lora扩频通信技术,实现厂区远距离组网,并设计通信算法,可实现多设备同时监控、快速组网等功能。经实验表明,传感器温度测量误差不超过±2℃且对温度变化灵敏度高;压强测量误差在±3 kPa之内;纽扣电池可为传感器持续供电1.6年以上;局域网组网便捷,厂区覆盖率高。该系统方案可满足现场要求并为液力耦合器等旋转设备的监控提供有效手段。

In order to discover and solve the faults of the hydraulic coupler unit during operation in time,reduce the equipment loss caused by the fault,and the probability of major faults,the hydraulic coupler condition monitoring system is developed.The innovative design of the built-in sensor based on radio frequency communication is used to accurately monitor the internal temperature and pressure key parameters of the coupler cavity,and the sensor temperature proportional differential algorithm is designed to reduce the sensor temperature lag.Lora spread spectrum communication technology is used to realize long-distance networking in the factory area,and communication algorithms are designed,which can realize functions such as simultaneous monitoring of multiple devices and fast networking.Experiments show that the temperature measurement error of the sensor does not exceed±2℃and the sensitivity to temperature changes is high,the pressure measurement error is±3 kPa,the button battery can continuously power the sensor for more than 1.6 years,and the LAN network is convenient and the factory coverage rate is high.The system scheme can meet the requirements of the site and provide effective means for monitoring rotating equipment such as hydraulic coupler.