To provide a security system securing a wide area at high security.
The security system 1 which arranges a security target to secure a security zone A1 to be secured from an intruder P includes a plurality of circumference monitoring devices 11 which are arranged at prescribed intervals along the outer edge of a monitoring zone A2 having a radius of about several hundred meters set around the security zone A1 and each of which includes an infrared sensor for detecting an intruder P intruding the monitoring zone A2 and a proximity sensor for detecting approach of the intruder. The interval between the circumference monitoring devices 11 is set so that the infrared sensors respectively included in the circumference monitoring devices 11 are partially overlapped to each other at least.
Tadashi Takahashi
Takashi Watanabe
Suzuki Mitsuyoshi
Kazuya Nishi
Yasuhiko Murayama
Next Patent: CASH MANAGEMENT SYSTEM