公开(公告)号：US20060133209A1

公开(公告)日：2006-06-22

申请号：US11018926

申请日：2004-12-22

申请人： Anastasius Bruinsma ,  Willem Venema

发明人： Anastasius Bruinsma ,  Willem Venema

IPC分类号： G01S15/00

CPC分类号： G01S15/101 ,  G01S7/52004 ,  G01S7/52006 ,  G01S15/88 ,  G01S2007/52014

摘要： A lithographic apparatus comprises an illumination system, a support constructed to support a patterning device, and a projection system. In pixel grid imaging, a large number of small optical spots are imaged onto the substrate surface using a micro-lens array (MLA). The z position of the MLA is adjustable in order to focus the spots on the substrate surface and/or to compensate for differences in height of the substrate surface. The focusing adjustment is based on an output of an ultrasonic distance sensor provided in the vicinity of the substrate surface.

摘要翻译： 光刻设备包括照明系统，构造成支撑图案形成装置的支撑件和投影系统。 在像素网格成像中，使用微透镜阵列（MLA）将大量的小光斑成像到基板表面上。 MLA的z位置是可调节的，以便将斑点聚焦在衬底表面上和/或补偿衬底表面的高度差异。 聚焦调整基于设置在基板表面附近的超声波距离传感器的输出。

公开(公告)号：US5430651A

公开(公告)日：1995-07-04

申请号：US269838

申请日：1994-07-01

申请人： Edward G. Nielsen ,  Ross C. Stoepker ,  Fred D. Litty

发明人： Edward G. Nielsen ,  Ross C. Stoepker ,  Fred D. Litty

IPC分类号： E01C19/00 ,  E02F3/84 ,  G01S7/52 ,  G01S15/10 ,  A01B63/10

CPC分类号： E02F3/847 ,  E01C19/006 ,  E01C19/008 ,  E02F3/842 ,  G01S15/10 ,  G01S7/52004 ,  G01S2007/52014

摘要： An ultrasonic sensor for a construction implement is disclosed which provides an indication of the position of the sensor relative to a reference surface in two dimensions. In a preferred embodiment of the invention, a pair of sensors are positioned a predetermined distance from one another to transmit and receive ultrasonic waves to measure the time it takes the waves to travel to the reference surface and be reflected back to the ultrasonic transducers. Additionally, a transducer is disclosed which detects a side lobe of a acoustic wave transmitted by an acoustic transducer whereby the velocity of said acoustic pulse may be calculated.

摘要翻译： 公开了一种用于建筑工具的超声波传感器，其提供了传感器相对于参考表面在两个维度中的位置的指示。 在本发明的优选实施例中，一对传感器彼此相隔预定的距离，以发射和接收超声波，以测量波浪行进到参考表面并被反射回到超声换能器的时间。 此外，公开了一种传感器，其检测由声换能器传输的声波的旁瓣，从而可以计算所述声脉冲的速度。

公开(公告)号：US20170363459A1

公开(公告)日：2017-12-21

申请号：US15621933

申请日：2017-06-13

申请人： COAVIS

发明人： Se Jin KIM ,  In Gon KIM ,  Jong Hyuk YOON

IPC分类号： G01F23/296 ,  G01S15/88

CPC分类号： G01F23/2962 ,  G01F23/296 ,  G01F23/2968 ,  G01F25/0061 ,  G01S7/52004 ,  G01S15/88 ,  G01S2007/52014

摘要： Provided are a system and a method for measuring a liquid level of a vehicle fuel tank, and more particularly, to a system for measuring a liquid level of a vehicle fuel tank including an ultrasonic sensor unit provided on a bottom surface in the vehicle fuel tank to acquire measurement data for calculating a distance from the bottom surface in the fuel tank to a fuel surface and a central processing unit using the measurement data transmitted from the ultrasonic sensor unit by a preset number of times for a preset time to calculate liquid level information of the fuel tank.

公开(公告)号：US07911881B2

公开(公告)日：2011-03-22

申请号：US12012650

申请日：2008-02-05

申请人： Ivan Di Federico

发明人： Ivan Di Federico

IPC分类号： G01B17/00

CPC分类号： G01S15/87 ,  E01C19/006 ,  G01J5/0022 ,  G01J5/0205 ,  G01J5/025 ,  G01J5/041 ,  G01J5/044 ,  G01J5/048 ,  G01S7/521 ,  G01S2007/52014

摘要： A distance and temperature sensing unit is used on paving vehicles. The unit has a first set of range sensors of a first diameter and a second set of range sensors of a second diameter. The unit calculates a weighted average distance to a road surface based on ranges measured by the multiple sensors. The unit also has a temperature sensor on a temperature bar. The bar is affixed to the unit by a flexible connection preventing break-off when the bar encounters obstacles, like the road surface, while the paving vehicle is moving.

摘要翻译： 铺路车辆使用距离和温度检测单元。 该单元具有第一直径的第一组距离传感器和第二直径的第二组距离传感器。 该单元基于由多个传感器测量的范围来计算到路面的加权平均距离。 该单元还在温度条上具有温度传感器。 该杆通过柔性连接固定到单元上，当铺路车移动时，当酒吧遇到障碍物（如路面）时，防止断裂。

公开(公告)号：US5568449A

公开(公告)日：1996-10-22

申请号：US307292

申请日：1994-09-02

申请人： Steven P. Rountree ,  Samir W. Berjaoui

发明人： Steven P. Rountree ,  Samir W. Berjaoui

IPC分类号： G01F23/296 ,  G01F25/00 ,  G01M3/24 ,  G01S7/52 ,  G01S7/521 ,  G01S7/527 ,  G01S15/88 ,  G01S15/42

CPC分类号： G01S7/527 ,  G01F23/2962 ,  G01F23/2968 ,  G01F25/0061 ,  G01M3/24 ,  G01S7/52004 ,  G01S7/521 ,  G01S15/88 ,  G01S2007/52014 ,  Y10S367/902 ,  Y10S367/908

摘要： An ultrasonic probe utilized in an ultrasonic ranging system for determining fluid volume and/or fluid leakage in an underground storage tank, as well as monitoring fluid inventory, is provided which is characterized by (i) having its calibration reflectors positioned whereby each of the secondary echo packets formed by the calibration reflectors of the ultrasonic probe becomes imbedded into the trailing edge of a primary echo packet of another calibration reflector or to cause its secondary echo packet to be detected by the transducer after the transducer has detected a primary echo packet associated with the fluid surface, (ii) each of the calibration reflectors being positioned perpendicular to and offset from the longitudinal axis of the probe body, (iii) an ultrasonic sound wave dampening member fixedly positioned in the probe body between the transducer assembly and the tank bottom, the wave dampening member having a surface facing toward the transducer assembly wherein the surface is configured to dampen sound waves striking the surface before the sound waves are reflected from the surface, or (iv) the transducer assembly comprising a transducer body in which is housed a piezoelectric crystal oriented perpendicular to the longitudinal axis of the prove body, wherein the transducer body is structured to dampen selected ultrasonic sound waves which emanate from the crystal.

摘要翻译： 提供了用于超声波测距系统中用于确定地下储罐中的流体体积和/或流体泄漏以及监测流体存储的超声波探头，其特征在于：（i）具有其校准反射器，其中每个次级 由超声波探头的校准反射器形成的回波包被嵌入到另一个校准反射器的主回波包的后缘中，或者在换能器检测到与第二回波包相关联的主回波包之后由换能器检测其次级回波包 所述流体表面，（ii）每个所述校准反射器定位成垂直于所述探针主体的纵向轴线并且偏离所述探针主体的纵向轴线;（iii）超声波波浪阻尼构件，其固定地定位在所述探针主体中的所述换能器组件和所述罐底部之间 ，所述波浪阻尼构件具有面向所述换能器组件的表面，其中所述surfa ce被配置为在声波从表面反射之前抑制撞击表面的声波，或者（iv）换能器组件包括其中容纳有垂直于证明体的纵向轴线定向的压电晶体的换能器体，其中 换能器体被构造成阻尼从晶体发出的选定的超声波。

公开(公告)号：US08631696B2

公开(公告)日：2014-01-21

申请号：US12467012

申请日：2009-05-15

申请人： Fernand Wicht ,  Bin Sai

发明人： Fernand Wicht ,  Bin Sai

IPC分类号： G01F23/00

CPC分类号： H04Q9/00 ,  G01F23/0023 ,  G01F23/0076 ,  G01F23/2962 ,  G01F25/0061 ,  G01S7/521 ,  G01S15/88 ,  G01S2007/52014 ,  H04Q2209/30 ,  H04Q2209/40 ,  H04Q2209/84

摘要： A method includes lowering a sensor unit in a tank, where the tank is capable of receiving a material. The method also includes determining a first distance between the material and the sensor unit and determining a second distance between the sensor unit and a main unit that lowers the sensor unit. In addition, the method includes determining a level of the material in the tank using the first and second distances. The method could further include calibrating the sensor unit to compensate for variations in a medium within the tank, where the sensor unit transmits wireless signals through the medium to determine the first distance. Determining the first distance could include using an ultrasonic measurement technique, and determining the second distance could include using a non-contact servo measurement technique.

摘要翻译： 一种方法包括降低罐中的传感器单元，其中罐能够接收材料。 该方法还包括确定材料和传感器单元之间的第一距离，并确定传感器单元与降低传感器单元的主单元之间的第二距离。 此外，该方法包括使用第一和第二距离确定罐中的材料的水平。 该方法还可以包括校准传感器单元以补偿罐内介质的变化，其中传感器单元通过介质传输无线信号以确定第一距离。 确定第一距离可以包括使用超声波测量技术，并且确定第二距离可以包括使用非接触伺服测量技术。

公开(公告)号：US20100018309A1

公开(公告)日：2010-01-28

申请号：US12449125

申请日：2008-02-20

申请人： Pino Marcovecchio ,  Elad Wallach ,  Uri Agam

发明人： Pino Marcovecchio ,  Elad Wallach ,  Uri Agam

IPC分类号： G01F23/296

CPC分类号： G01S7/52004 ,  G01F23/2962 ,  G01S7/52006 ,  G01S15/10 ,  G01S2007/52014

摘要： An ultrasound system for measuring the fluid level in a tank includes means for emitting an ultrasound detecting beam towards a surface of the fluid in the tank from a first position relative to the tank, yielding at least a portion of a path of the ultrasound detecting beam being generally perpendicular to the bottom of the tank and defining an axis intersecting the bottom of the tank, the first position being adjacent the bottom of the tank; means for receiving echoes from the ultrasound detecting beam reflected from the surface of the fluid in the tank at a second position biased from the first position; and means for determining the fluid level using the echoes received from the ultrasound detecting beam and a distance between the first and second positions. Such a system allows eliminating the limitation caused by the transducers' dead zone without requiring the use of a waveguide. A reference target can be used to calibrate the system for the speed of sound of the fluid mixture in the tank and for measuring the fluid mixture density.

摘要翻译： 用于测量罐中的液位的超声系统包括用于从相对于罐的第一位置向罐中的流体表面发射超声波检测光束的装置，产生超声波检测光束的路径的至少一部分 大致垂直于罐的底部并且限定与罐的底部相交的轴线，第一位置与罐的底部相邻; 用于在从所述第一位置偏置的第二位置处接收从所述槽中的所述流体表面反射的所述超声波检测光束的回波的装置; 以及用于使用从超声波检测束接收的回波和第一和第二位置之间的距离来确定流体水平的装置。 这样的系统可以消除由换能器死区引起的限制，而不需要使用波导。 可以使用参考目标来校准系统中的液体混合物在罐中的声速并用于测量流体混合物的密度。

公开(公告)号：US20030074970A1

公开(公告)日：2003-04-24

申请号：US10273179

申请日：2002-10-18

发明人： Siegfried Reck

IPC分类号： G01N029/04

CPC分类号： B60G17/01933 ,  B60G2204/111 ,  B60G2400/252 ,  B60G2401/176 ,  F16F9/05 ,  F16F9/052 ,  F16F2230/08 ,  G01L11/06 ,  G01N2291/02872 ,  G01S7/521 ,  G01S15/025 ,  G01S15/88 ,  G01S2007/52014

摘要： An ultrasonic pulse/echo measurement arrangement includes an ultrasonic transducer (12), which is mounted spatially fixed on an air spring cover plate (4). The arrangement further includes a fixedly mounted reference reflector (14), a target reflector (16) mounted on a roll-off piston (8) or on the buffer (18) as well as a transmitter/receiver evaluation electronic circuit (30). The running time as well as the amplitude of the reference signal is evaluated to precisely determine the pressure present in the interior space of the air spring. The ultrasonic transducer (12) has a null/4-adaptation layer (22), whose impedance does not correspond to the geometric mean of the impedances of the ultrasonic transducer (12) and the ambient air of the interior space (20) of the air spring, but rather, is a mismatch. The evaluation electronic circuit (30) can be calibrated at ambient pressure for the determination of the inner pressure of the air spring. Preferably, the pressure measuring method according to the invention is also used to determine the running-time dependent spring height in an air spring (2) of a motor vehicle.

摘要翻译： 超声波脉冲/回波测量装置包括空间上固定在空气弹簧盖板（4）上的超声波换能器（12）。 该装置还包括固定安装的参考反射器（14），安装在滚降活塞（8）上或缓冲器（18）上的目标反射器（16）以及发射器/接收器评估电子电路（30）。 评估运行时间以及参考信号的振幅以精确地确定存在于空气弹簧的内部空间中的压力。 超声波换能器（12）具有羔羊/ 4适应层（22），其阻抗不对应于超声波换能器（12）的阻抗的几何平均值和内部空间（20）的环境空气 空气弹簧，而是一个不匹配。 评估电子电路（30）可以在环境压力下进行校准，以确定空气弹簧的内部压力。 优选地，根据本发明的压力测量方法还用于确定机动车辆的空气弹簧（2）中的运行时间相关弹簧高度。

公开(公告)号：US6073491A

公开(公告)日：2000-06-13

申请号：US307873

申请日：1999-05-10

申请人： Norbert Fischer ,  Roland Altsinger

发明人： Norbert Fischer ,  Roland Altsinger

IPC分类号： F16F9/05 ,  G01L11/06 ,  G01S7/521 ,  G01S15/02 ,  G01S15/88 ,  G01N29/00

CPC分类号： G01S7/521 ,  F16F9/05 ,  G01L11/06 ,  G01S15/025 ,  G01S15/88 ,  B60G2204/111 ,  B60G2400/252 ,  B60G2401/176 ,  F16F2230/08 ,  G01N2291/02872 ,  G01S2007/52007 ,  G01S2007/52014

摘要： The exact spring height as well as the spring pressure can be determined with a single arrangement for the optimal utilization of the axle loads of a multi-axle air spring suspended vehicle and to control the distance between the chassis and the axle. An air spring (2) is equipped with an ultrasonic pulse/echo measuring system. The air spring (2) includes a transmitter/receiver component (14) arranged on the chassis and a first reference electrode (20) and a reflector component (16) fixed to the axle. The air spring height can be determined in a conventional manner from the relative value of the running times of the ultrasonic pulses which are traversed on the reference path and the measuring path. A second reference reflector (22) is mounted at a different distance to the first reference reflector (20). For the determination of pressure, the transmitting power or the receiving amplification of the second reference reflector (22) is controlled in such a manner that the amplitude (intensity) of the sonic waves, which are reflected from the first reference reflector (20), remains at a constant value. This amplitude (intensity) is measured via the sonic transducer (14).

摘要翻译： 精确的弹簧高度以及弹簧压力可以通过单个布置来确定，以最佳地利用多轴空气弹簧悬架车辆的轴负载并且控制底盘和车轴之间的距离。 空气弹簧（2）配有超声波脉冲/回波测量系统。 空气弹簧（2）包括布置在底盘上的发射器/接收器部件（14）和固定到轴上的第一参考电极（20）和反射器部件（16）。 空气弹簧高度可以以常规方式从在基准路径和测量路径上穿过的超声波脉冲的运行时间的相对值确定。 第二参考反射器（22）以与第一参考反射器（20）不同的距离安装。 为了确定压力，第二参考反射器（22）的发射功率或接收放大率被控制为使得从第一参考反射器（20）反射的声波的振幅（强度） 保持恒定值。 该振幅（强度）通过声音换能器（14）测量。

公开(公告)号：US5418758A

公开(公告)日：1995-05-23

申请号：US119088

申请日：1993-12-06

申请人： David J. Webster

发明人： David J. Webster

IPC分类号： G01B17/04 ,  G01S7/52 ,  G01S15/08 ,  G01S15/32 ,  G01B17/00

CPC分类号： G01B17/04 ,  G01S15/08 ,  G01S15/32 ,  G01S7/52006 ,  G01S2007/52014

摘要： Apparatus and a method using ultrasonic signals to determine the distance between the displacement of two points in space. An ultrasonic distance measurement unit (1) generates frequency modulated ultrasonic waves using binary shift keying. The signals are transmitted by the transmitting transducer (2) towards a reflector assembly (30), preferably comprised of two reflectors (31, 32). One of the reflectors (31) is smaller than the other reflector (32), and the smaller reflector (31) is positioned in front of the larger reflector (32). The reflected signals are received by the receiving transducer (3). The unit (1) phase digitizes and processes the received signal by recording time stamps of zero-crossings of the received signal. The speed of sound may be determined by a temperature measurement system (5) and/or by measuring the transit time difference between the two reflectors (31, 32) of the assembly (30). The distance between the unit (1) and the assembly (30) can then be determined from the speed of sound and the time taken for an ultrasonic signal to travel between the unit (1) and assembly (30). Displacement of the assembly (30) relative to the unit (1) can be determined by making distance measurements over a period of time. The present invention has a number of applications, including measurement of roof convergence in underground mining.

摘要翻译： PCT No.PCT / AU92 / 00122 Sec。 371日期：1993年12月6日 102（e）日期1993年12月6日PCT 1991年3月22日PCT公布。 公开号WO92 / 16857 日期：1992年10月1日。设备和使用超声波信号的方法来确定空间中两点的位移之间的距离。 超声波距离测量单元（1）使用二进制移位键控产生调频超声波。 信号由发送换能器（2）传送到反射器组件（30），优选地由两个反射器（31,32）组成。 其中一个反射器（31）比另一个反射器（32）小，并且较小的反射器（31）位于较大的反射器（32）的前面。 反射信号由接收换能器（3）接收。 单元（1）通过记录接收信号的过零点的时间戳来对接收的信号进行数字化和处理。 声速可以通过温度测量系统（5）和/或通过测量组件（30）的两个反射器（31,32）之间的通过时间差来确定。 然后可以根据声速和超声信号在单元（1）和组件（30）之间行进的时间来确定单元（1）和组件（30）之间的距离。 可以通过在一段时间内进行距离测量来确定组件（30）相对于单元（1）的位移。 本发明有许多应用，包括测量地下采矿中的屋顶收敛。