| 摘要 |
The anti-intrusion system (1) comprises a conducting circuit (2) placed on a surface to be protected, with a measurement circuit (5) detecting electrical characteristics of the circuit. These characteristics may include the electrical resistance and the capacitance of the circuit. The electrical circuit may be formed by use of conducting ink in a serpentine track over the protected surface. The ink may be applied by screen printing on the support surface. Two such tracks may be separated by an insulating flexible membrane which is applied to the surface to be protected. Conductive bridges may be provided between the conductive layers. |
