Method for calibrating a sensor for measuring concentration of odors
US6672129B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 7, 2002 |
| Grant date | Jan 6, 2004 |
| Priority date | — |
| Expiry date | Feb 7, 2022 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF24F8/50
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method and apparatus is disclosed which employs a pulse-controlled microdroplet fluid delivery system for precisely dispensing fragrances and other odor producing vapors. The pulse-controlled fluid delivery device is capable of ejecting microdroplets of fluid with a diameter less than 350 micrometers at a controlled ejection rate based upon inkjet printing technology. The pulse-controlled fluid delivery system includes mechanisms for vaporizing the fluids and delivery of the vapors to the nose, which is controlled by a programmable system controller capable of real time data-driven dispensing with a multi-fluid capability. Synthesis of custom fragrances is made possible by a multijet programmed control system which adjusts dispensing rates of components. Calibration of a prior art “electronic nose” is disclosed. A precise calibration gas is produced in real-time to counteract the effect of drifting.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.