Abstract: Based on the structural design of the safety valve core sensor, this paper details the configuration and software design of a novel online safety valve detection system. It analyzes key application technologies in the design and development of a safety valve core diaphragm sensor data acquisition system based on VC++ 6.0, introduces a host computer data acquisition software implemented using VC++ programming technology, and verifies the feasibility of this system through field experiments. Field tests of the data acquisition system show that, compared with standard sensors, the core sensor has advantages such as high accuracy in test values, accurate and detailed characterization of the full opening process of the safety valve, and good reproducibility of test data. Keywords: VC++; safety valve; sensor; data acquisition 1. Introduction Currently, several safety valve detection technologies have been proposed in domestic and international literature. For example, Zhou Yihui et al. of Dalian University of Technology, through continuous improvement of previous isolated safety valve online calibration systems, proposed a microcomputer-controlled safety valve calibration system using a USB port communication mechanism, which can directly measure the pressure at the safety valve disc. However, in practical use, it still cannot monitor the operation of the safety valve in real time. Furthermore, each monitoring requires bringing gas cylinders and testing equipment to the site, which is not true online safety valve monitoring. To directly collect data from the entire process of a safety valve during dynamic operation, i.e., full opening, Guo Chongzhi of South China University of Technology proposed a functionally extended safety valve integrating sensor elements based on functional analysis of existing online safety valve monitoring technologies. This monitoring technology has been granted a national invention patent. Since the valve disc is the most stress-concentrated part of the entire safety valve structure, this paper utilizes powerful programming techniques and the high-frequency sampling of the PIO-821H data acquisition card to design a novel system from another perspective. This system can perform online computer data acquisition of the full opening process of the safety valve, providing a new approach for future research on online safety valve monitoring systems. For details, please click: Safety Valve Core Sensor and its Data Acquisition System