Multi-featured security system with self-diagnostic capability
US4887064A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 28, 1987 |
| Grant date | Dec 12, 1989 |
| Priority date | — |
| Expiry date | Dec 28, 2007 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG07C2009/00793
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A multi-function security system for monitoring access to a protected area such as a vehicle. The system has a self-diagnostic capability for detecting defective sensor or trigger devices and bypassing such devices to allow the system to be armed. The system includes audible and visual message capability for providing an indication when the system is disarmed that an intrusion was attempted and identifying the particular intrusion point. Multiple levels of security are provided by programming the disarming event as either entry of a code via a remote transmitter or entry of the code via the transmitter and then entry of an authorization code manually via a key pad. Other features include a reset feature activating the alarm when power is removed and restored unless a predetermined switch is active, programmable door lock and unlock signals to adapt the system to a particular power door locking and unlocking system, programmability of the alarm siren code and duration, automatic activation of the vehicle courtesy light when the system is disarmed, selective disabling of the system audible indications of arming and disarming, and programmable sensor or trigger polarity.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.