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1. 发明公开

EP2372388A1 A pulse-echo level measuring method 审中-公开
标题翻译： Impulsecho-Pegelmessverfahren
公开(公告)号：EP2372388A1
公开(公告)日：2011-10-05
申请号：EP10158920.8
申请日：2010-04-01
申请人： Siemens Milltronics Process Instruments Inc.
发明人： Brown, Robert , Larocque, Jean-René
IPC分类号： G01S7/292 , G01S7/527 , G01S13/52 , G01S13/88 , G01S15/52 , G01S15/88 , G01F23/284 , G01F23/296 , G01S13/10 , G01S15/10
CPC分类号： G01S7/2927 , G01F23/284 , G01F23/2962 , G01S7/5276 , G01S13/10 , G01S13/52 , G01S13/88 , G01S15/10 , G01S15/52 , G01S15/88
摘要： A pulse-echo level measuring method comprises the steps of:
- successively transmitting energy pulses to a surface of a material whose level is to be measured,
- receiving and converting, for each energy pulse, associated echoes into an echo function over time,
- providing a time-varying threshold function (TVT) and identifying valid echoes (E1, E2, E3) in each echo function as those that exceed the threshold function (TVT),
- identifying, on the basis of changes in position of the valid echoes (E1, E2, E3) of at least three echo functions and on the further basis of motion information on the level of the material, one of the valid echoes (E1, E2, E3) of each echo function as coming from the surface of the material, and
- using the identified echo (E2) for tracking the level.
According to the invention, echo processing is simplified in that the method further comprises the step of:
- once the wanted echo (E2) is identified, reshaping the time-varying threshold function (TVT) to mask the hitherto valid echoes (E1, E3) with the exception of the identified echo (E2).
摘要翻译：脉冲回波电平测量方法包括以下步骤： - 将能量脉冲依次传送到要测量电平的材料的表面， - 将每个能量脉冲接收和转换相关联的回波作为随时间变化的回波函数，提供时变阈值函数（TVT），并且将每个回声函数中的有效回波（E1，E2，E3）识别为超过阈值函数（TVT）的有效回波（E1，E2，E3）， - 基于有效回波的位置变化（E1，E2，E3），并且在进一步的基础上，关于材料的水平的运动信息，每个回波函数的有效回波（E1，E2，E3）之一来自于材料，以及 - 使用识别的回波（E2）来跟踪该水平。根据本发明，简化了回波处理，因为该方法还包括以下步骤： - 一旦识别到想要的回波（E2），重新形成时变阈值函数（TVT），以屏蔽迄今有效的回波（E1，E3 ），但所识别的回波（E2）除外。

2. 发明公开

EP1821117A1 A method for processing an echo profile and a pulse-echo ranging system 有权转让
标题翻译： Verfahren zur Verarbeitung eines Echoprofils und Impulsechomesssystem
公开(公告)号：EP1821117A1
公开(公告)日：2007-08-22
申请号：EP06003515.1
申请日：2006-02-21
申请人： Siemens Milltronics Process Instruments Inc.
发明人： Brown, Robert , Larocque, Jean-René
IPC分类号： G01S7/527
CPC分类号： G01F23/284 , G01S7/5273
摘要： A method for processing an echo profile and a pulse-echo ranging system
Pulse-echo ranging system are used in level measurement applications for determining the distance to a target object by measuring how long after transmission of a pulse an echo pulse is received. An echo profile (17) is generated and then processed to determine the temporal position of the echo pulse on a temporal axis.
Based on the fact that the peak portion and the trailing edge of the echo profile are susceptible to be affected by the measurement environment and the target object itself, the accuracy in determining the echo arrival time is increased, by the steps of fitting a branch of a parabola (19) to a selected portion of the leading edge (18) of the echo profile (17) and determining the temporal position of the fitted parabola (19) on the temporal axis.
摘要翻译：用于处理回波曲线和脉冲回波测距系统的方法脉冲回波测距系统用于电平测量应用中，用于通过测量在接收到回波脉冲的脉冲的传输之后多长时间来确定到目标对象的距离。生成回波曲线（17），然后处理以确定回波脉冲在时间轴上的时间位置。基于回波分布的峰值部分和后沿易受测量环境和目标对象本身的影响，确定回波到达时间的准确性通过以下步骤来增加：抛物线（19）到回波轮廓（17）的前缘（18）的选定部分，并且确定拟合抛物线（19）在时间轴上的时间位置。

3. 发明公开

EP1662237A3 A level measurement apparatus 有权转让
标题翻译：液位计
公开(公告)号：EP1662237A3
公开(公告)日：2007-12-19
申请号：EP05109107.2
申请日：2005-09-30
申请人： Siemens Milltronics Process Instruments Inc.
发明人： Bartoli, Daniel , Brown, Robert
IPC分类号： G01F23/296
CPC分类号： G01F23/284 , G01F23/2962 , G01S13/103 , G01S15/101
摘要： The level measurement apparatus comprises a controller (110), a transducer (120), a transmitter (140), an interface (170), and a digital receive signal processing module (180). The transmitter (140) is operatively coupled to the transducer (120) and responsive to the controller (110) for emitting energy pulses directed at the surface (20) of a material (20) contained in a vessel (10). The interface (170) is operatively coupled to the transducer (120) and includes an analog-to-digital converter (174) for digitizing the energy pulses reflected by the surface (30). The digital receive signal processing module (180) comprises a plurality of program components for processing the digitized echo pulses and determining a level measurement for the material (20) contained in the vessel (10).

4. 发明授权

EP1821117B1 A method for processing an echo profile and a pulse-echo ranging system 有权转让
标题翻译：一种用于处理回波分布和脉冲回波测量系统的方法
公开(公告)号：EP1821117B1
公开(公告)日：2010-10-13
申请号：EP06003515.1
申请日：2006-02-21
申请人： Siemens Milltronics Process Instruments Inc.
发明人： Brown, Robert , Larocque, Jean-René
IPC分类号： G01S7/527
CPC分类号： G01F23/284 , G01S7/5273

5. 发明公开

EP1662237A2 A level measurement apparatus 有权转让
标题翻译： Füllstandsmessgerät
公开(公告)号：EP1662237A2
公开(公告)日：2006-05-31
申请号：EP05109107.2
申请日：2005-09-30
申请人： Siemens Milltronics Process Instruments Inc.
发明人： Bartoli, Daniel , Brown, Robert
IPC分类号： G01F23/296
CPC分类号： G01F23/284 , G01F23/2962 , G01S13/103 , G01S15/101
摘要： The level measurement apparatus comprises a controller (110), a transducer (120), a transmitter (140), an interface (170), and a digital receive signal processing module (180). The transmitter (140) is operatively coupled to the transducer (120) and responsive to the controller (110) for emitting energy pulses directed at the surface (20) of a material (20) contained in a vessel (10). The interface (170) is operatively coupled to the transducer (120) and includes an analog-to-digital converter (174) for digitizing the energy pulses reflected by the surface (30). The digital receive signal processing module (180) comprises a plurality of program components for processing the digitized echo pulses and determining a level measurement for the material (20) contained in the vessel (10).
摘要翻译：电平测量装置包括控制器（110），换能器（120），发射器（140），接口（170）和数字接收信号处理模块（180）。发射器（140）可操作地耦合到换能器（120）并且响应于控制器（110）发射指向容纳在容器（10）中的材料（20）的表面（20）的能量脉冲。接口（170）可操作地耦合到换能器（120）并且包括用于数字化由表面（30）反射的能量脉冲的模数转换器（174）。数字接收信号处理模块（180）包括用于处理数字化回波脉冲的多个程序组件，并且确定容纳在容器（10）中的材料（20）的液位测量。

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