Disposable all-fiber ocean temperature-salinity-depth profile measuring probe

Abstract

The invention discloses a disposable all-fiber ocean temperature-salinity-depth profile measuring probe, which relates to the field of ocean environment monitoring, and comprises a shell part, a sensing part and a connecting part, the shell part comprises a flow guide cover and a counterweight head fixedly arranged at the head part of the flow guide cover, and a plurality of empennages are fixedlyarranged at the tail part of the flow guide cover; the sensing part is fixed to the bottom of the counterweight head through a supporting piece and comprises a grating pressure sensor, a fiber grating temperature sensor and a fiber salinity sensor; the connecting part is arranged in an inner cavity of the air guide sleeve, one end is connected with the sensing part, and the other end penetrates out of the tail of the flow guide cover and is connected with a hull deck unit to transmit data collected by the sensing part to a hull. The optical fiber sensors are adopted, passive anti-electromagnetic interference is achieved, and far-end power supply is not needed; collected data signals are transmitted through optical fibers, transmission efficiency is high, stability is good, and temperature-salinity-depth profile measurement of a large-depth sea area can be achieved.

Description

technical field [0001] The invention relates to the field of marine environment monitoring, in particular to a disposable all-fiber ocean temperature-salinity depth profile measuring probe. Background technique [0002] Ocean temperature, salinity and depth profile data are of great value in the scientific research of marine environment in the fields of marine environmental science research, marine resource exploration, marine fishery and marine military, especially in marine military, temperature and salt depth profile data are the key to calculating the ocean sound velocity curve A very effective way, it plays an extremely important role in military operations such as anti-submarine detection. [0003] The disposable temperature, salt and depth profile measuring instrument (XCTD) can record the ocean temperature, salt and depth profile data during the rapid descent of the probe by dropping the temperature, salt and depth profile measurement probe during the hull navigation...

AI Technical Summary

Problems solved by technology

[0004] At present, most of the traditional XCTD probes use electrical sensors, and metal enameled wires are used for data transmission. On the one hand, the data processing circuit is relatively complicated, and the problem of remote power supply needs to be solved. The transmission rate and signal transmission accuracy of the system are greatly limited, and the signal transmission distance is limited, which is basically unusable in sea areas exceeding 1500m

At present, although there is an XCTD that uses optical fiber as the transmission medium, which improves the range of measurement depth, its sensor is still an electrical sensor, and a photoelectric conversion module needs to be installed on the probe, which increases the complexity of the probe and still needs to solve the problem of remote power supply.

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