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United States Patent ( 19 ) Greer et al . ( 54 ) APPARATUS FOR DETECTING PERSONS HDDEN IN VEHICLES 75 Inventors :
| Content Provider | Semantic Scholar |
|---|---|
| Author | Greer, C. |
| Copyright Year | 2017 |
| Abstract | 57 ABSTRACT A seismic detection system for detecting persons hidden in vehicles includes a seismic transducer used as a sens ing device and electronic processing circuitry for pro cessing the output signals from the seismic transducer. The electronic circuitry detects output signals from the seismic transducer, and, by counting the number of times the signal crosses a preset threshold during a given time window, makes a logic choice between there being personnel or no personnel in the vehicle. If a person or persons are in the vehicle an output is pro duced and this output is used to actuate audio and/or visual indicators thereby indicating that a person or persons are in the vehicle. |
| File Format | PDF HTM / HTML |
| Alternate Webpage(s) | https://patentimages.storage.googleapis.com/6b/9d/20/76d8810f89518d/US4096474.pdf |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Patent |