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. The high-density electrical method is a primary methodused in shallow geophysical prospecting. Due to the rapid industrialdevelopment that has taken place in recent years, the function and performance of high-densityelectrical instruments have been considerably improved in several aspects.However, most of the electrical instruments currently available on themarket still exhibit some shortcomings, such as being bulky, heavy, limitedin their data acquisition accuracy, and difficult to connect to the Internetfor remote monitoring. To address these problems, this study developed a newmultifunctional four-dimensional (4D) high-density electrical instrument basedon remote wireless communication technology. The system is small andlightweight, includes an integrated transceiver, has high data acquisitionaccuracy, and is capable of remote wireless real-time control. In thisstudy, the hardware circuit was designed. The Arm all-in-one (AIO)LJD-eWinV5-ST7 with a 154.4 cm × 87 cm, 800 × 480high-brightness wide-temperature-range display is used as the host computer,which has the advantages of small size, low power consumption, and abundanthardware resources. Internet of things (IoT) technology is incorporated in the system, and a 4Gmodule is employed to provide a real-time remote control and dataacquisition monitoring system based on the cloud platform. Tests showed thatthis instrument is stable and convenient to use and can meet therequirements for use in field prospecting.

Internet-of-things-based four-dimensional high-density electrical instrument for geophysical prospecting