发明名称 |
Personal monitoring system |
摘要 |
A body worn transmitter periodically transmits a coded rf signal from a rolling code generator, which is received by a base unit at the location where a person is confined, which base unit has a rolling code generator synchronized to produce the same random code signal for comparison. If proper coded signals are not received, a report is sent via telephone to a remote monitoring station. The body worn transmitter is designed to detect and defeat attempts at removal. The body worn transmitter is also used to detect the presence of a person at a particular location. By programming the time of rf transmissions, a large number of body worn transmitters can be monitored at a given location.
|
申请公布号 |
US2002063626(A1) |
申请公布日期 |
2002.05.30 |
申请号 |
US20010861099 |
申请日期 |
2001.05.18 |
申请人 |
PITZER BERYL E.;GHAZARIAN JOHN O. |
发明人 |
PITZER BERYL E.;GHAZARIAN JOHN O. |
分类号 |
B63C9/00;G08B21/22;(IPC1-7):G08B23/00 |
主分类号 |
B63C9/00 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|