Research and Application of Modbus-RTU Communication Protocol in the Construc-tion of Oilfield Internet of Things
Oilfield Internet of Things construction is the basis of the development of oilfield digital transformation.Considering the fact that there are many and widespread production sites in oilfields,as well as numerous and scattered small and medium-sized stations,in order to solve the data acquisition and monitoring problems of various dispersed production units such as well stations and metering sta-tions,in the architecture design of the Internet of Things system,especially in the selection of commu-nication protocols,multiple types of industrial control communication protocols are compared,and ul-timately a more standardized and open Modbus communication protocol is chosen.A data acquisition and monitoring system suitable for the actual needs of oilfields has been developed based on the principle of one-master and multi-slaves of this protocol.The system uses wireless bridges to replace the tradi-tional shielded twisted pair cables in the data transmission layer to achieve long-distance data transmis-sion of RS485 bus main data link,and effectively solves the electromagnetic interference problem caused by strong electromagnetic radiation in the surrounding environment.It realizes data acquisition,storage,and alarm functions of key parameters such as temperature,pressure,and liquid level in dis-persed stations(warehouses).The acquisition and monitoring system built by this architecture can ensure that the data of the site acquisition end can be timely and accurately managed at the monitoring end.The system operation is stable and reliable,and has the characteristics of strong compatibility and easy opera-tion and maintenance in the later stage.The application of this system provides a reference experience for the rapid construction of small and medium-sized oilfield data acquisition and monitoring system,and has a good prospect of promotion and application.
Internet of ThingsModbus protocolRS485wireless bridgeconfiguration
万方数据
维普
