Research on Mechanical Condition Monitoring Technology for Portal Crane by Wireless Sensors

It´s very important to monitor the mechanical condition of portal crane for the device safety management. According to the characters of portal crane, a wireless monitoring system of the mechanical condition has been designed in the paper, including the status of metal structure, slewing bearing and speed reducer. The system has solved the temperature drift, zero point setting and other problems of metal structure testing, and GPRS DTUs are used as the core component of the sensors to transfer data to Internet. The monitoring system has the advantages such as simple structure, high precision, low price and great expandability, which has huge application potentiality for the device safety management of Port Company.