Gun detection system

摘要: A gun detection system comprising a gate having first and second panels arranged opposite to each other for defining sensing space therebetween, the first second panels detecting scattered electromagnetic fields and generating sense signals having phase difference therebetween in accordance with detected results, respectively, an oscillation circuit for applying first transmission phases to the induce generate fields, reception circuit for receiving from the first amplifying received sense signals by predetermined gain, comparison for comparing and amplified second transmission circuit, respectively, determination as whether sensed material is metal, microcomputer analyzing comparison data according analysis algorithm determining on basis of analyzed result whether sensed material belongs gun, an indication unit providing at least one aural visual indications result determined microcomputer.