发明名称 |
Ultrasonic distance measuring device - has pulse circuit driving oscillator connected to mixer-separator via damping element |
摘要 |
<p>A distance measurement device uses ultrasound transmitted along a variable fluid path and then interferometrically compared with the measurement echo. The variable fluid path can be replaced by an electronic device to reduce cost. The electronic reference contains a comparator stage (3) connected to the ultrasonic device (1) on one side and, via a time element (4) and a further comparator (5), to a pulse stage (6) to which it is also directly connected. The pulse circuit drives an oscillator (7) connected to a mixer-separator (9) via a damping element (8). The probe (12) is connected to the measuring device (1) via the mixer-separator (9) and a decoupler (11).</p> |
申请公布号 |
DE2040642(B2) |
申请公布日期 |
1978.03.02 |
申请号 |
DE19702040642 |
申请日期 |
1970.08.17 |
申请人 |
MANNESMANNROEHREN-WERKE AG, 4000 DUESSELDORF |
发明人 |
PANDORF, HEINRICH, 4030 RATINGEN |
分类号 |
G01B17/00;G01S15/18;(IPC1-7):01N29/04 |
主分类号 |
G01B17/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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