关键词: 智能检测仪表, 人机交互, 电磁兼容, 信号采集, 图形显示

Abstract:  Aiming at the shortcomings of traditional detection instrument such as single function and poor human-computer interaction experience, a design method of intelligent detection instrument is proposed, which supports 56 channels of synchronous signal acquisition, and the number of sampling channels is more than 20 times more than that of the traditional instrument, and is equipped with 10.1-inch capacitive touch screen, and various graphical interfaces are designed by Qt software, so that the user can switch the display mode by touching the keys, and it can not only display the value of the collected data in real time, but also convert the collected data into intuitive alarm messages. Users can switch the display mode by touching the buttons, which can not only display the collected data values in real time, but also transform the collected data into intuitive alarm information. The instrument also supports uploading the data to the server via Ethernet, which avoids the cumbersome operation of recording the data manually, and at the same time, reserves enough space for the iterative upgrading of the instrument. In order to adapt the intelligent instrument to the complex electromagnetic environment in the industrial field, the electromagnetic compatibility design is theoretically analyzed, it is demonstrated that the metal shielding material has a good shielding effect on the electromagnetic wave, and it is proposed to adopt shielding, filtering, and grounding three effective measures to solve the electromagnetic compatibility problem.

Key words: intelligent detector, human-computer interaction, electromagnetic compatibility, signal acquisition, graphic display