Self-powered anti-tamper sensors
First Claim
Patent Images
1. An anti-tampering system comprising:
- anti-tamper protection circuitry powered by a power source;
switching circuitry between the power source and the anti-tamper protection circuitry; and
a transducer outputting a signal to the switching circuitry electrically connecting the power source to the anti-tamper protection circuitry in response to a tampering event, whereas the switching circuitry otherwise disconnects the power source from the anti-tamper protection circuitry to save power.
1 Assignment
0 Petitions
Accused Products
Abstract
An anti-tampering system and method typically featuring a printed circuit board with anti-tamper protection circuitry powered by a power source. Switching circuitry is coupled between the power source and the anti-tamper protection circuitry. A transducer outputs a signal to the switching circuitry electrically connecting the power source to the anti-tamper protection circuitry in response to a tampering event. The switching circuitry otherwise disconnects the power source from the anti-tamper protection circuitry to save power.
33 Citations
21 Claims
-
1. An anti-tampering system comprising:
-
anti-tamper protection circuitry powered by a power source; switching circuitry between the power source and the anti-tamper protection circuitry; and a transducer outputting a signal to the switching circuitry electrically connecting the power source to the anti-tamper protection circuitry in response to a tampering event, whereas the switching circuitry otherwise disconnects the power source from the anti-tamper protection circuitry to save power. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
-
-
13. An anti-tampering system comprising:
-
a printed circuit board including switching circuitry between a power source and anti-tampering protection circuitry, the switching circuitry normally decoupling the power source from the anti-tamper protection circuitry in the absence of a tampering event; a cover over the printed circuit board including an integral transducer layer connected to the switching circuitry, the transducer layer configured to convert energy induced during a tampering event to an output signal to the switching circuitry in response to the tampering event thus electrically coupling the power source to the anti-tamper circuitry thereby providing power from the power source to the anti-tamper protection circuitry; and a spacer layer between the cover and the printed circuit board. - View Dependent Claims (14, 15)
-
-
16. An anti-tampering method comprising:
-
coupling switching circuitry between a power source and anti-tamper protection circuitry to electrically decouple the power source from the anti-tamper protection circuitry in the absence of a tampering event; adding a transducer to an asset connected to the switching circuitry; in response to a tampering event, the transducer outputting a signal to the switching circuitry causing the power source to provide power to the anti-tamper protection circuitry; and protecting the asset via the anti-tamper protection circuitry. - View Dependent Claims (17, 18, 19, 20, 21)
-
Specification