会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 35. 发明公开
    • ULTRASONIC LEAK DETECTING APPARATUS
    • VORRICHTUNG ZUM ULTRASCHALL-LECKNACHWEIS
    • EP0998671A4
    • 2000-05-10
    • EP97950784
    • 1997-11-14
    • UE SYSTEMS INC
    • GOODMAN MARKZENO JOHN R
    • G01N29/04F16C17/24F16N3/12F16N21/00F16N29/02G01H1/08G01M3/24G01N29/032G01N29/14G01N29/36H04B1/26G01H1/14G01M13/04H04B1/06
    • F16C33/6625F16N29/02G01H1/08G01N29/032G01N29/14G01N29/36G01N2291/015G01N2291/0226H04B1/26
    • 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.
    • 具有宽动态带宽和可重复的固定衰减基准点的超声波泄漏检测器包括接收超声波能量并将其转换为与所接收的超声波能量相关的强度和频率的电输出信号的换能器(5,6)。 高增益电荷前置放大器(7)连接到换能器(5,6)并生成换能器电输出信号的放大版本。 然后使放大的信号通过具有至少一个固定衰减基准点的多级对数衰减器(8),以产生检测和放大的超声信号的衰减版本。 对数衰减器(8)的输出连接到频率转换电路(9),该电路将超声波频率信号转换为与衰减信号幅度和频率相关的音频信号。 音频信号随后被音频放大器(10)放大并用于驱动信号电平指示器(12,13),该指示器提供放大的输出信号的量值的指示。 检测器可与润滑工具一起使用,以通过检测当润滑剂到达装置时所接收的超声波能量的减少来确定施加到密封的机械装置(例如轴承)上的润滑量。 检测器也可用于检测与未决的机械故障相关的超声波能量的增加。