Tamper detection system
US11999318B2 · kind B2 · utility
0Cited by
2References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 17, 2022 |
| Grant date | Jun 4, 2024 |
| Priority date | — |
| Expiry date | Feb 4, 2043 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01J1/4204
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A tamper detection system for a controller includes a housing, a circuit board mounted in the housing, a voltage input line on the circuit board receiving an operating voltage, a light detection circuit mounted on the circuit board receiving the operating voltage from the voltage input line and a signal conditioning device conditioning the operating voltage and connected to the light detection circuit. The light detection circuit interrupts the operating voltage at the signal conditioning device in response to detecting a source of light having a light value greater than a threshold.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.