专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明授权

EP0998671B1 ULTRASONIC LEAK DETECTING APPARATUS 失效
标题翻译：设备技术超声检漏
公开(公告)号：EP0998671B1
公开(公告)日：2006-07-19
申请号：EP97950784.5
申请日：1997-11-14
申请人： UE SYSTEMS, INC.
发明人： GOODMAN, Mark , ZENO, John, R.
IPC分类号： G01N29/04 , H04B1/06 , G01H1/08 , G01H1/14 , F16N21/00 , G01M3/24 , G01M13/04
CPC分类号： F16C33/6625 , F16N29/02 , G01H1/08 , G01N29/032 , G01N29/14 , G01N29/36 , G01N2291/015 , G01N2291/0226 , H04B1/26
摘要： An ultrasonic leak detector with a wide dynamic bandwidth and repeatable fixed attenuation reference points includes a transducer (5, 6) which receives ultrasonic energy and converts it into an electrical output signal related in intensity and frequency to the received ultrasonic energy. A high gain charge preamplifier (7) is connected to the transducer (5, 6) and generates an amplified version of the transducer's electrical output signal. The amplified signal is then passed through a multi-level logarithmic attenuator (8) having at least one fixed attenuation reference point to create an attenuated version of the detected and amplified ultrasonic signal. The output of the logarithmic attenuator (8) is connected to a frequency shift circuit (9) which converts the ultrasonic frequency signal into an audio frequency signal related in magnitude and frequency to the attenuated signal. The audio frequency signal is then amplified by an audio amplifier (10) and used to drive a signal level indicator (12, 13) which provides an indication of the magnitude of the amplified output signal. The detector may be used with a lubrication tool to determine the amount of lubrication applied to a sealed mechanical device, such as a bearing, by detecting the decrease in received ultrasonic energy as the lubrication reaches the device. The detector may also be used to detect the increase in ultrasonic energy associated with pending mechanical failure.

2. 发明授权

EP0151115B1 ULTRASONIC LEAK DETECTING METHOD AND APPARATUS 失效
标题翻译：超声波泄漏检测方法及装置
公开(公告)号：EP0151115B1
公开(公告)日：1990-02-28
申请号：EP83902599.6
申请日：1983-07-14
申请人： UE SYSTEMS INC.
发明人： GOODMAN, Mark , ZENO, John, Richard , BORRUSO, Marty
IPC分类号： G01N29/04
CPC分类号： G01N29/36 , G01M3/24 , G01N29/14 , G01N29/34
摘要： Leaks or thin spots in containers (10), as well as mechanical faults, e.g. worn bearings, are detected by an ultrasonic energy indicator that includes a modulator (22) that heterodynes ultrasonic signals received by a transducer (14) and creates an audio signal related thereto. The transducer includes a series arrangement of piezoelectric crystals (14) feeding a field-effect transistor amplifier (16) and the modulator operates in an amplitude modulation, suppressed-carrier mode which can be stabilized by a feedback loop. For indicating the presence of the audio signal, either headphones (26) or a meter (38) or both are employed. When leaks in a container are being detected, an ultrasonic generator is used which varies its output frequency slowly over a band of frequencies. The leak detection technique can be improved by applying a thin layer of a liquid to the container surface so that pressure introduced into the container causes the formation and bursting of bubbles in the liquid that results in the production of ultrasonic energy.

3. 发明公开

EP0998671A1 ULTRASONIC LEAK DETECTING APPARATUS 失效
标题翻译：设备技术超声检漏
公开(公告)号：EP0998671A1
公开(公告)日：2000-05-10
申请号：EP97950784.5
申请日：1997-11-14
申请人： UE SYSTEMS, INC.
发明人： GOODMAN, Mark , ZENO, John, R.
IPC分类号： G01N29/04 , H04B1/06 , G01H1/08 , G01H1/14 , F16N21/00 , G01M3/24 , G01M13/04
CPC分类号： F16C33/6625 , F16N29/02 , G01H1/08 , G01N29/032 , G01N29/14 , G01N29/36 , G01N2291/015 , G01N2291/0226 , H04B1/26
摘要： An ultrasonic leak detector with a wide dynamic bandwidth and repeatable fixed attenuation reference points includes a transducer (5, 6) which receives ultrasonic energy and converts it into an electrical output signal related in intensity and frequency to the received ultrasonic energy. A high gain charge preamplifier (7) is connected to the transducer (5, 6) and generates an amplified version of the transducer's electrical output signal. The amplified signal is then passed through a multi-level logarithmic attenuator (8) having at least one fixed attenuation reference point to create an attenuated version of the detected and amplified ultrasonic signal. The output of the logarithmic attenuator (8) is connected to a frequency shift circuit (9) which converts the ultrasonic frequency signal into an audio frequency signal related in magnitude and frequency to the attenuated signal. The audio frequency signal is then amplified by an audio amplifier (10) and used to drive a signal level indicator (12, 13) which provides an indication of the magnitude of the amplified output signal. The detector may be used with a lubrication tool to determine the amount of lubrication applied to a sealed mechanical device, such as a bearing, by detecting the decrease in received ultrasonic energy as the lubrication reaches the device. The detector may also be used to detect the increase in ultrasonic energy associated with pending mechanical failure.

4. 发明公开

EP0151115A1 ULTRASONIC LEAK DETECTING METHOD AND APPARATUS 失效
标题翻译：超声泄漏检测方法和设备。
公开(公告)号：EP0151115A1
公开(公告)日：1985-08-14
申请号：EP83902599.0
申请日：1983-07-14
申请人： UE SYSTEMS INC.
发明人： GOODMAN, Mark , ZENO, John, Richard , BORRUSO, Marty
IPC分类号： G01N29 , G01M3
CPC分类号： G01N29/36 , G01M3/24 , G01N29/14 , G01N29/34
摘要： Des fentes ou des endroits minces dans des conteneurs (10), ainsi que des défauts mécaniques, par exemple des coussinets usés, sont détectés par un indicateur d'énergie par ultrasons comportant un modulateur (22) qui effectue l'hétérodynation de signaux ultrasonores reçus par un transducteur (14) et qui crée un signal audio apparenté à ceux-ci. Le transducteur comporte un montage en série de cristaux piézo-électriques (14) alimentant un amplificateur de transistor à effet de champ (16) et le modulateur fonctionne selon un mode à modulation d'amplitude et sans onde porteuse, pouvant être stabilisée par une boucle d'asservissement. Pour indiquer la présence du signal audio, on utilise soit des écouteurs (26), soit un compteur (38), soit les deux. Si des fuites sont détectées dans un conteneur, on utilise un générateur d'ultrasons variant sa fréquence de sortie lentement sur une bande de fréquences. Il est possible d'améliorer la technique de détection des fuites en appliquant une mince couche d'un liquide sur la surface du conteneur, si bien que la pression introduite dans le conteneur provoque la formation et l'éclatement de bulles dans le liquide, ce qui résulte dans la production d'une énergie ultrasonore.

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式