System for determining hazardous substance exposure rate from concentration measurement and heart rate data
US5164898A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 10, 1992 |
| Grant date | Nov 17, 1992 |
| Priority date | — |
| Expiry date | Feb 10, 2012 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG16H15/00
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A device for measuring a rate exposed to deleterious materials comprises a heartbeat sensor for sensing heart rates, a deleterious material sensor for sening concentrations of deleterious materials in the air, a memory for storing the conversion values for converting the heart rates into corresponding respiration rates, and an operation unit. The operation unit counts a heart rate based a heartbeat signal received from the heartbeat sensor, calculates a respiration rate corresponding to the heart rate based on a conversion value read out from the memory, and calculates a rate exposed to deleterious material per unit time based on the calculated respiration rate and a signal respresenting a concentration of the deleterious material which signal is received from the deleterious material sensor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.