Detonator, method of operating same, and communication system for same

A method of operating a detonator including a control circuit counting a delay time included in a first signal and generating a blasting signal and a blasting voltage and a charging circuit providing a driving voltage to the control circuit, the method comprising:

• performing, by the charging circuit, a charging operation by receiving a voltage from a blasting device through a cable during a first period;
• receiving, by the control circuit, a first signal transmitted using a voltage applied to the cable by the blasting device during a second period;
• and
• transmitting, by the control circuit, a second signal to the blasting device using a current flowing to the cable and stopping, by the charging circuit, the charging operation during a third period.

A communication system comprising a transmitter and a receiver connected through a cable,

• wherein the transmitter transmits a first signal to the receiver using a voltage applied to the cable, and the receiver includes:
• a control circuit receiving the first signal and transmitting a second signal to the transmitter using a current flowing to the cable;
• and
• a charging circuit performing a charging operation by receiving the voltage through the cable,
• wherein the charging circuit stops the charging operation while the control circuit transmits the second signal to the blasting device.