Title:
SYSTEM AND METHOD OF CALIBRATION IN A POWERED AIR PURIFYING RESPIRATOR
Document Type and Number:
WIPO Patent Application WO/2013/052517
Kind Code:
A3
Abstract:
A self-calibrating powered air purifying respirator (PAPR). The PAPR comprises an electric motor mechanically coupled to a blower, an air flow sensor, and a controller coupled to the air flow sensor and to the electric motor. The controller is configured to automatically execute a one-time self-calibration by driving the electric motor to a predefined operation point, receiving an indication from the air flow sensor, determining a reference parameter based on the indication from the air flow sensor, and storing the reference parameter, wherein after completion of the one-time self-calibration the controller controls the electric motor based on the stored reference parameter.
Inventors:
PALACHARLA PRAVEEN KUMAR (IN)
DUMPALA MADAN MOHAN REDDY (IN)
PATIL SWAPNIL GOPAL (IN)
SHAIK MEHABUBE RABBANEE (IN)
DUMPALA MADAN MOHAN REDDY (IN)
PATIL SWAPNIL GOPAL (IN)
SHAIK MEHABUBE RABBANEE (IN)
Application Number:
PCT/US2012/058508
Publication Date:
January 30, 2014
Filing Date:
October 03, 2012
Export Citation:
Assignee:
HONEYWELL INT INC (US)
International Classes:
A62B18/00
Foreign References:
US20030019494A1 | 2003-01-30 | |||
US20110146682A1 | 2011-06-23 | |||
US5671730A | 1997-09-30 | |||
DE102004013453A1 | 2005-10-06 |
Attorney, Agent or Firm:
BEATUS, Carrie (Patent Services M/S AB/2B101 Columbia Road,P. O. Box 224, Morristown New Jersey, US)
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