Pressure distribution detecting device
US4953410A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Aug 25, 1989 |
| Grant date | Sep 4, 1990 |
| Priority date | — |
| Expiry date | Aug 25, 2009 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01L1/16
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A pressure distribution detecting device comprises a plurality of piezo-electric sensor elements arranged in a matrix for outputting voltages corresponding to pressure changes. A piezo-electric sensor element whose output voltage is to be read is sequentially selected through a control line so that when all the piezo-electric sensor elements are selected, selection through a control line is repeated. Output voltages of the piezo-electric sensor elements are read through reading lines and are then stored in a data processing device for each piezo-electric sensor element. In the data processing device, increment or decrement which is an output voltage corresponding to a pressure change in a sensor element is stored accumulatively, so that data concerning a pressure at a present time from an initiation of measurement can be obtained.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.