Guardian Technologies

Frank C Pennypacker

Kip L Fuller

Donald W Collier

Jim A McCurdy

Patrick J Conners

Lawrence R Stevens

Lon A Williamson

Don R Gaiser

A tamper-indicating transmitter is disclosed that indicates a subsequent tamper event during a tamper alert period, T, which is initiated by a first tamper event. In a preferred embodiment, the transmitter includes a transmitter housing having a conductive strap attached thereto for securing the transmitter about a confinee's limb, the confinee typically participating in a home arrest program. Within the housing, a clock source generates pulses having a period t that are input to a counter whose reset line is connected to the conductive strap. When the conductive strap is opened, the counter is held reset and its output is a predetermined multiple bit maximum. Upon the closing of the strap, the counter counts the clock pulses and decrements the counter output from the initial predetermined maximum count down to a predetermined minimum count which remains on the counter output if no subsequent opening of the strap occurs. The counter output is combined with an identification code and is serially provided to a digital/RF converter which transmits a data message containing the counter output and an identification code to a monitoring unit that relays the status of the transmitter to supervisory personnel at a central monitoring station. The counter output is used by the monitoring unit to compute a time a strap closure so a tamper by the confinee during the tamper alert period following securement of the transmitter to the confinee can be distinguished from the strap opening and closing at the transmitter installation.

Tamper indicating transmitter

A remote confinement system provides a plurality of different unsupervised tests to determine the presence, identity or conduct of the prisoner. The tests preferably include an RF test performed continuously with an RF transmitter attached to the prisoner and a receiver at the remote location, a schedulable voice test performed to identify a person as the specified prisoner, and a breath alcohol test to determine the prisoner's sobriety. The tests are performed with equipment at the remote location in accordance with test selections and schedules selected in a prior automated communication with a central office computer. Events which include test results are communicated to the central office upon a selectively established communications link to the central office, in reply to which communication information selecting subsequent tests procedures or scheduling is communicated from the host to and stored at the remote location. The information communicated from the host includes an identification code for the transmitter attached to the specified prisoner. The RF test generates a message for transmission to the central unit when the prisoner enters or leaves the remote location, but sounds a warning if the signal is lost and delays transmission of the message to allow the prisoner to return following his departure.

Remote confinement system

A breath alcohol testing system for advantageous use in unsupervised blood alcohol testing includes a face mask having for receiving a breath sample, components to confirm the identity and components to insure that this identity act and breath delivery are performed by the same person. The system requires that the face mask continuously engage the face of the subject between identity confirmation and breath delivery. By making the continuing physical presence of a subject an operative link in the system during both identity confirmation and breath delivery, the integrity of unsupervised testing is greatly enhanced.

Breath alcohol testing system

Growing community of inventors

Loveland, OH, United States of America

Frank C Pennypacker