System for preventing tampering with a signal conditioner remote from a host system
US7774624B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 19, 2008 |
| Grant date | Aug 10, 2010 |
| Priority date | — |
| Expiry date | Dec 19, 2028 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01F1/8477
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A system for detecting tampering in a signal conditioner of electronics that determines a parameter from signals received from one or more sensors is provided. The system includes a host system that receives the parameter signals from the signal conditioner indicating properties of a material and supplies power to the signal conditioner. The signal conditioner is remote from and coupled to said host system. The signal conditioner generates the parameter signals. The host system is configured to periodically transmit a request for said authentication information to said signal conditioner, receive said authentication information from said signal conditioner in response to said request, compare said authentication information with initial authentication information, and detect said tampering condition in said signal conditioner if said authentication information is not equal to said initial authentication information.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.