Onboard air discharge system
US4881456A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 29, 1988 |
| Grant date | Nov 21, 1989 |
| Priority date | — |
| Expiry date | Feb 29, 2008 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60H1/00742
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
An onboard air discharge system includes a first electrode mounted on each of a plurality of onboard seats of a vehicle. A second electrode is disposed in relation to each of the first electrodes such that at least part of a personnel who is seated upon a seat on which the first electrode is mounted is interposed between the both electrodes. The presence or absence of a personnel is detected for each seat on the basis of a change in the capacitance formed between the first and the second electrode. Air ejection toward the seat for which the absence of a personnel has been determined is inhibited. When a personnel is seated upon a seat, there occurs a large change in the capacitance formed between the first and the second electrode. Such change depends on the dielectric permittivity of a personnel, and hence is greatly different from a corresponding change which would occur when a baggage or the like is placed on the seat, thus enhancing the accuracy with which the presence or absence of a personnel on the seat is detected. The air ejection is controlled on such reliable information indicating the presence or absence of a personnel, and hence the efficiency of air ejection is improv…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.