The way of knocking door to door to check the electricity meter is a troublesome thing for both the knocker and the knocked. At present, many residential users have used prepaid electric cards to sa
1、 Communication mode 1. Electrical standard of communication interface: the communication interface complies with RS-232 and RS -- 485 international standards. 2. Communication protocol: adopt Mo
1、 Brief description of Modbus Protocol Acrxxxe series instruments use Modbus RTU communication protocol, which defines the check code and data sequence in detail, which are necessary for specific
The pressure, flow and flow direction of the pipe network are important monitoring contents in the water supply dispatching system. The measurement and control terminal is installed on the monitorin
Abstract: General Packet Radio Service (GPRS) is a wireless packet switching technology based on the global system for mobile communications (GSM). It provides end-to-end, wide area wireless IP conn
1、 Overall system structure The intelligent remote monitoring system proposed in this paper mainly collects the field real-time water level and rainfall data in a certain period, and then transmits
SCADA (supervisory control and data acquisition) system, namely data acquisition and monitoring control system. SCADA system is widely used in many fields, such as data acquisition, monitoring and c
1. What is DTU? Answer: DTU is short for data terminal unit. Broadly speaking, in communication, the module units responsible for sending data information at both ends of the data transmission link
The shortage of water resources has become a global problem. With the development of economy, the contradiction between the increasing demand for water and the shortage of water resources forces all
Modern water-saving irrigation technology to transform traditional irrigation agriculture and realize timely and appropriate "fine irrigation" has important practical significance and far-
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