公开(公告)号：US20160154981A1

公开(公告)日：2016-06-02

申请号：US14903214

申请日：2014-06-27

Applicant: CRYPTERA A/S

Inventor： Erling WESSELHOFF

IPC: G06F21/86 ,  G06F21/72

CPC classification number: G06F21/86 ,  G06F21/72 ,  G06F21/75 ,  G06F21/87 ,  G06F2221/2143 ,  G07F19/207 ,  H04L9/0897 ,  H04L2209/127

Abstract: There is provided a tamper responsive sensor comprising a carrier printed circuit board, carrier PCB, holding a mesh of one or more electrically conductive tracks. The sensor also holds a pressure or force sensitive switch contact arranged on top of the carrier PCB, which contact has first and second electrical contact connections. Furthermore, the sensor has a tamper detecting circuitry arranged at the carrier PCB, which circuitry is powered via two electrical power lines, and which circuitry is connected to one or more electrically conductive signal lines. One of the power lines or one of the signal lines is electrically connected to the tamper detecting circuitry via a first tamper line holding the switch contact, and one of the power lines or one of the signal lines is electrically connected to the tamper detecting circuitry via a second tamper line holding a conductive track of the carrier PCB mesh, thereby enabling the tamper detecting circuit to detect an interruption of the signal path through the first tamper line and/or an interruption of the of signal path through the second tamper line.

Abstract translation: 提供了一种篡改响应传感器，其包括承载印刷电路板，载体PCB，其保持一个或多个导电轨道的网格。 传感器还保持布置在载体PCB顶部上的压力或力敏感的开关触点，该触点具有第一和第二电触点连接。 此外，传感器具有布置在载体PCB处的篡改检测电路，该电路通过两条电力线供电，哪个电路连接到一个或多个导电信号线。 电源线之一或信号线之一经由保持开关触点的第一篡改线电连接到篡改检测电路，并且其中一条电​​源线或一条信号线通过 保持载体PCB网格的导电轨迹的第二篡改线，从而使得篡改检测电路能够检测通过第一篡改线的信号路径的中断和/或通过第二篡改线的信号路径的中断。