Metal detector

• Main Authors: QIAN YUYE, XU GUOQIANG, LU ZHIWEN, ZHAO HONGGUANG, SU SHUQUAN, WU JIARONG
• Format: Patent
• Language: Chinese; English
• Published: 19.01.2024
• Subjects: DETECTING MASSES OR OBJECTS; GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; MEASURING; PHYSICS; TESTING

The metal detector comprises a clock switching frequency conversion circuit, a probe transmitting signal circuit, a probe receiving signal circuit and a signal processing control circuit, and the clock switching frequency conversion circuit comprises a main frequency crystal oscillator and an auxiliary frequency crystal oscillator which can be switched for use, a frequency conversion unit for outputting working frequency signals and a second connector; the transmitting circuit comprises two capacitor banks communicated with a coil of the first transformer in order to be matched with working frequency switching and a first connector connected with the second connector; the probe signal receiving circuit comprises two capacitor banks and a third connector, wherein the two capacitor banks are communicated with a second transformer coil in order to match working frequency switching. The signal processing control circuit comprises a fourth connector, a second change-over switch and a signal processing circuit; the