Microwave ice accretion meter
US4470123A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 5, 1982 |
| Grant date | Sep 4, 1984 |
| Priority date | — |
| Expiry date | Jan 5, 2002 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB64D15/20
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A system for indicating ice thickness and rate of ice thickness growth on surfaces is disclosed. The region to be monitored for ice accretion is provided with a resonant surface waveguide which is mounted flush, below the surface being monitored. A controlled oscillator provides microwave energy via a feed point at a controllable frequency. A detector is coupled to the surface waveguide and is responsive to electrical energy. A measuring device indicates the frequency deviation of the controlled oscillator from a quiescent frequency. A control means is provided to control the frequency of oscillation of the controlled oscillator. In a first, open-loop embodiment, the control means is a shaft operated by an operator. In a second, closed-loop embodiment, the control means is a processor which effects automatic control.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.