SYSTEM CAPABLE OF COUNTING THE QUANTITY USING INDUCTOR

摘要

A system for counting bullets with an inductor is provided to check and wirelessly transmit the quantity of bullets included in a case by using an inductance value varied according to the property of the bullet put on a coil of counter board. A cartridge contains a plurality of bullets and an RFID(Radio Frequency IDentification) tag(100) is attached to the cartridge, and a connector(320) is connected to the RFID tag and a reader transceives data with the RFID tag. A counter board(200) is connected to the RFID tag through the connector, and has a plurality of holes passing the bullet and coils respectively winding the hole. The RFID tag includes a counter calculating the number of bullets included in the cartridge by using data received from the counter board. The counter calculates the number of bullets included in the cartridge by using an inductance value measured from each coils and determines whether the bullet is inserted into the hole by using a signal received through each signal line connecting both ends of each coil.