Method and system of anti-circumvention monitoring in vehicle ignition interlock operation
US11787415B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 4, 2022 |
| Grant date | Oct 17, 2023 |
| Priority date | — |
| Expiry date | Oct 4, 2042 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG07C2009/00531
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A method of monitoring for circumvention of an ignition interlock system is described herein including detecting an electrical parameter associated with an electrical power state of a vehicle electrical system in a vehicle comprising an ignition interlock device that includes at least a relay device and a controller device electrically interconnected within the vehicle electrical system, measuring a rate of degradation associated with the electrical parameter of the vehicle electrical system, and comparing the electrical parameter to a threshold condition. The method further includes comparing the rate of degradation of the electrical parameter to a threshold rate. Depending on the rate of degradation, a violation state may be generated, a violation state may be reversed, a violation state may be maintained, a log entry may be generated, or more than one of these may occur.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.