| 摘要 |
PCT No. PCT/SE94/00037 Sec. 371 Date Sep. 21, 1995 Sec. 102(e) Date Sep. 21, 1995 PCT Filed Jan. 19, 1994 PCT Pub. No. WO94/16620 PCT Pub. Date Aug. 4, 1994A method, a device and a sensor to sense the breathing of a man or an animal. A breathing sensor which, in an optical way, detects changes in deposited moisture on a sensor portion is placed in the breathing air flow, and changes of a transmitted or reflected optical signal dependent on deposited moisture is sensed as a measure of the breathing. A sensor according to the invention may consist of an optical fiber, one end surface of which constitutes a sensor surface and reflects a signal in the fiber to a varying degree dependent on mist deposited by the breathing air flow on the sensor surface. The sensor can be used in other environments as well, to detect a condensable vapor in a gas. |
