Constant voltage and constant current hybrid power supply system for submarine observation network

A technology of constant voltage and constant current, power supply system, applied in the direction of AC network circuits, electrical components, circuit devices, etc., can solve the problems of increasing the current of the trunk cable, reducing the reliability and damage of the repeaters and branchers, and increasing the The effect of long service life, high reliability and wide input current range

CN108649565BActive Publication Date: 2021-04-06TONGJI UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Publication Date
2021-04-06

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Abstract

The invention relates to a constant-voltage and constant-current hybrid power supply system for a submarine observation network, which includes a monitoring and control unit and a power supply unit. The monitoring and control unit is composed of a current sensor, a relay group and a control module. The control module judges the working mode of the submarine observation network through the input current of the current sensor, and selects an appropriate power supply mode by changing the state of the relay group. The power supply unit consists of a Zener diode and a current-voltage DC conversion module, which are used as two power supply modes under the light load and heavy load modes of the submarine observation network respectively. The present invention can monitor the input current of the submarine main equipment in real time, and automatically change the power supply mode according to the input current level, so the input current range is large, the use flexibility is high, and it can be applied to the submarine observation network with two transmission modes of constant voltage and constant current. And the reliability is high, which greatly increases the service life of the submarine backbone equipment.
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Description

technical field

[0001] The invention belongs to the technical field of ocean observation, and in particular relates to a constant-voltage and constant-current hybrid power supply system for a seabed observation network. Background technique

[0002] The submarine observation network is mainly composed of shore base stations, submarine primary and secondary junction boxes, submarine instrument platforms, photoelectric composite submarine cables, splitters and repeaters. Among them, the repeater is used to amplify the optical signal and compensate for the signal attenuation during long-distance optical fiber transmission; the splitter is the hub node connecting the main submarine cable and the branch submarine cable, and plays an irreplaceable role in system expansion. At the same time, when the main cable or branch cable fails, the splitter can isolate the faulty area, so as to ensure that the rest of the system can still operate normally. The design life of the submarine ob...

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Embodiment Construction

[0028] Specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0029] figure 1 It is a block diagram of the power supply system of the seabed observation network with two transmission modes of constant current and constant voltage. The shore base station 1 of the constant current observation network is connected in series with each seabed junction box 2, while the midshore base station 1 of the constant voltage observation network is connected with Each seabed junction box 2 is connected in parallel. Although there are differences in topological structures and wiring modes of different seabed observation networks, the constant voltage and constant current hybrid power supply system 4 of the seabed observation network according to the present invention is directly connected in series on the seabed backbone cable, and It supplies power for backbone networking equipment such as submarine junction box 2 and sp...