Object detecting system using ultrasonic waves
US4896304A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | May 31, 1989 |
| Grant date | Jan 23, 1990 |
| Priority date | — |
| Expiry date | May 31, 2009 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S15/42
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An object detecting system including an ultrasonic transducer element array including first to N-th ultrasonic transducer elements, a first means for intermittently supplying burst driving pulses to the ultrasonic transducer elements at different times in each of successive intermittent periods. Also, the object detecting system includes a second means coupled between each of the first to N-th ultrasonic transducer elements and the first means for applying the burst driving pulses to the first to N-th ultrasonic transducer elements, successively. The second means includes first to N-th delay circuits which delay applying the burst driving pulses to the ultrasonic transducer elements with the first to N-th delay circuits giving different delay time periods, respectively, so that the delay time periods are successively longer in the order from the first delay circuit to the N-th delay circuit and each of the ultrasonic transducer elements is supplied with the burst driving pulse through two kinds of the delay circuits connected in parallel in such a manner that the M-th number of the ultrasonic transducer elements is coupled with the M-th and (N-M+1) th delay circuits, with M being a…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.