Smart chess-like game piece positioning and recognition system

A piece positioning and recognition system, comprising:

• a microcontroller unit;
• a Radio Frequency Identification (RFID) module connected to the microcontroller unit, having at least a first port and a second port;
• a multi-channel analog switch connected to the microcontroller unit and the RFID module;
• an electromagnet and communication signal switch unit connected to the multi-channel analog switch;
• an electromagnetic drive unit connected to the electromagnet and communication signal switch unit;
• antennas connected to the electromagnet and communication signal switch unit;
• silicon steel blocks;
• and
• pieces,
• wherein the microcontroller unit is configured to select a channel of the multi-channel analog switch and control the electromagnet and communication signal switch unit to select a corresponding Radio Frequency (RF) antenna path;
• wherein the RFID module is configured to read piece information transmitted via the RF antenna path from the antenna;
• wherein the multi-channel analog switch is configured for group gating and intra-group channel gating to select a channel corresponding to the RF antenna path;
• wherein the electromagnet and communication signal switch unit is configured to switch between the electromagnetic drive unit and the RF antenna path;
• wherein the electromagnetic drive unit is configured to drive an electromagnet;
• wherein the antennas are configured for transmitting and receiving signals of the pieces and configured for a coil of the electromagnet;
• wherein the silicon steel blocks are configured as a core of the electromagnet, generating a magnetic attraction to the pieces after being magnetized;
• wherein the piece includes a piece structure, a built-in permanent magnet, and a coil and a chip for a recognition tag.