An underwater universal PLC device with high-definition video transmission channel

Abstract

The embodiment of the invention discloses an underwater universal PLC device with a high-definition video transmission channel. The underwater universal PLC device comprises a main control module, a signal acquisition module, a power balancing module and a power module, wherein the main control module is used for detecting and controlling the PLC integrally; the signal acquisition module comprises a high-precision analog-to-digital conversion circuit, a digital-to-analog conversion circuit and a digital value detection port, and is connected with the main control module; the power balancing module is used for detecting the electric power of a whole system, protecting a power source from damage caused by excessive power, and supplies necessary output power; the power module is connected with the main control module, and used for opening and closing an external electromagnetic valve, controlling a motor and detecting faults; and the main control module, a power source management module, the signal acquisition module, the power balancing module, the power module, a communication module and a rectifier module are all set to circuit modules of the same mechanical mounting size. Through adoption of the underwater universal PLC device, different measuring and controlling strategies of the system can be realized by programming on different underwater devices and instruments, and the underwater universal PLC device can be directly applied to underwater works.

Description

technical field [0001] The invention belongs to the field of digital image technology and data acquisition control system, and in particular relates to an underwater general-purpose PLC device equipped with a high-definition video transmission channel. Background technique [0002] In recent years, my country has raised the development of marine economy and marine technology to an unprecedented strategic height, and the marine industry has become an important field for cultivating and developing strategic emerging industries. In the process of marine development, a large number of special marine engineering equipment and instruments are required. During the development or practical application of these engineering equipment and instruments, most of them need to be equipped with electronic measurement and control systems to achieve normal work. [0003] At present, developers usually choose finished PLC (programmable logic controller) devices that have been maturely applied o...

AI Technical Summary

Problems solved by technology

The finished PLC is designed for land application conditions and does not consider the actual situation of underwater applications. Therefore, in the actual use process, the following problems will occur: (1) The PLC module usually has an operation and fault indicator device, which is convenient for users to understand the operation status and Find faults, but when applied underwater, due to the sealing of the PLC, the operation and fault indication devices are invisible, making it difficult to obtain the operation and fault status of the PLC in time, and difficult to maintain; (2) PLC usually does not have a video transmission channel, so If underwater instruments and equipment have video monitoring requirements, in order to provide video transmission channels, an additional remote video transmission system needs to be added, thereby increasing the complexity of the underwater measurement and control system

(3) Most of the existing PLCs are integrated in one system. If additional functions are added, a new system needs to be regenerated, which is not easy to maintain and upgrade

The fixing of the circuit board in the cabin and the wiring of the circuit have always been a time-consuming and laborious work in the design of the underwater cabin.

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