System for detecting indoor conditions and air conditioner incorporating same
US5326028A · kind A · utility
27Cited by
2References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 24, 1993 |
| Grant date | Jul 5, 1994 |
| Priority date | — |
| Expiry date | Aug 24, 2013 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF24F2120/12
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
Abstract
A system to be installed within a room for detecting indoor condition data such as the interior area of the room and the number and position of occupants therein comprises an LED array for emitting a spotlight to form a multiplicity of light spots one by one successively as dispersed on the interior surface of the room at approximately equal spacings. The spotlight is projected from the array on the interior surface and concentrated on a one-dimensional PSD upon reflection. The indoor condition data is calculated by using triangulation for the optical system and output currents of the PSD as input signals.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.