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摘要: 在深海钻探中，深水仪器在下水前通常需要进行压力模拟测试以验证水密性与耐压性，因此经常用到深水压力模拟测试系统。本文对传统的深水压力模拟测试系统进行了改进，改进后的系统电控部分主要由组态王与PLC组成。PLC 作为下位机，通过其内置的A/D 模块，配合压力传感器可实现对压力信号的采集，用户可以设置参数与预设程序，通过开关量输出点、接触器等实现试压泵的启停和阀门开关控制；系统支持手动、自动两种工作模式；通过PLC 串口配合蓝牙串口透传模块，可实现蓝牙设备端数据显示。组态王作为上位机通过串口以Modbus RTU 协议方式与下位机通讯，组态编程开发人机交互界面，实现用户对压力模拟测试全过程的加压、保压、卸荷设置，以及实现监控测试过程、显示压力曲线、显示报表等功能。深水压力模拟测试系统具有人机界面友好、模拟监控形象直观、功能齐全、性能可靠、操作方便、安全及具备可扩展性等优点。Abstract: In deep-sea drilling, deepwater instruments’ water tightness and pressure resistance should be verified by pressure simulation testing system before launched. So deepwater pressure simulation testing system is often used. This article improves the traditional deepwater pressure simulation testing system, the improved system's electrical control part is mainly composed of KingView and PLC. The system uses PLC as the lower computer, and through its built-in A/D module, combined with pressure sensors, it can collect pressure signals. Users can set parameters and preset programs, and control the on-off of the pump and the valves through digital outputs, contactors, etc. The system provides auto-manual dual-mode. By combining the PLC serial port with the Bluetooth serial port transmission module, remote device display can be achieved. KingView was developed as the upper computer, to communicate with the lower computer via serial port based on Modbus RTU protocol, develops a human-machine interaction interface through configuration programming, realizes pressurization, pressure holding, and unloading setting for the entire process of pressure simulation testing, as well as monitoring the testing process, displaying pressure curves, and reporting forms. The deepwater pressure simulation testing system has the advantages of friendly human-machine interface, intuitive simulation monitoring, complete functions, reliable performance, convenient operation, safety, and scalability.
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Key words:
- pressure simulation testing system /
- KingView /
- PLC /
- serial communication /
- Modbus RTU /
- deep-sea drilling
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