Cascaded synchronous large-scale data collecting system based on network and distributed type power supply

Abstract

The invention provides a cascaded synchronous large-scale data collecting system based on a network and distributed type power supply. The cascaded synchronous large-scale data collecting system comprises a plurality of power supply and data collecting sub-systems, an industrial Ethernet switch and a plurality of data collecting working stations. Each power supply and data collecting sub-system comprises main power stations. External power supplies have access to the main power stations, the main power stations conduct interference resistance and current limiting on the external power supplies so that electric power can be supplied outward and clock synchronization of all the main power stations can be achieved, and the main power stations provide an Ethernet switch interface and a power supply interface. The external power supplies have access to the power stations, interference resistance and current limiting are conducted on the external power supplies, electric power is supplied outward, and the Ethernet switch interface is provided; each collecting terminal receives input signals and processes the input signals to generate processed data so that clock synchronization of all the collecting terminals can be ensured; the industrial Ethernet switch receives the processed data and sends the processed data to the data collecting working stations; each data collecting working station receives the processed data. By means of the cascaded synchronous large-scale data collecting system, cascaded communication and power supply synchronous data collecting of the whole system can be achieved.

Description

technical field [0001] The invention relates to the technical field of communication and data processing, in particular to a cascade synchronous large-scale data acquisition system based on network and distributed power supply. Background technique [0002] In tunnel monitoring, the oil seismic exploration signal acquisition system usually has a very long line, so proprietary network technologies, such as professional token ring networks, or Ethernet and CAN (Controller Area Network, Controller Area Network) buses are used Wait. However, the above method only solves the communication problem, and it is difficult to solve the power supply problem. Although there is POE (Power Over Ethernet, active Ethernet) technology, it belongs to the star wiring method, and its communication and power supply distance is only 100m, which cannot meet the needs of the site. Since the signals are all AC signals, and the frequency is between 0.001HZ and 1000HZ, the requirements for the signal...

AI Technical Summary

Problems solved by technology

[0003] Moreover, due to the very harsh site conditions, it is not easy to install and the wiring is complicated, and the existing technol

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