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1. 发明授权

US06759977B1 Method and apparatus for radar-based level gauging 有权
标题翻译：基于雷达的液位计的方法和装置
公开(公告)号：US06759977B1
公开(公告)日：2004-07-06
申请号：US10327815
申请日：2002-12-20
申请人： Kurt Olov Edvardsson , Jan Westerling
发明人： Kurt Olov Edvardsson , Jan Westerling
IPC分类号： G01F23284
CPC分类号： H01Q1/225 , G01F23/284 , G01S7/024 , G01S7/2813 , G01S13/103 , G01S13/88 , H01Q1/22 , H01Q25/00
摘要： A method for radar-based gauging of the level of a substance in a tank (13) having at least one interfering structure (16a-c), comprises the steps of: (i) transmitting a microwave signal in a plurality of radiation lobes (15a-b; 15a-d), each of which being individually directed towards the substance and at least one of which being directed towards the interfering structure; (ii) for each of the radiation lobes detecting temporally resolved the microwave signal as reflected against the substance, and for at least one of the lobes detecting the microwave signal as reflected against the interfering structure; (iii) based on signal strengths of the detected microwave signals, distinguishing the detected microwave signals, which have been reflected against the substance; and (iv) based on a propagation time of at least one of the microwave signals distinguished as those, which have been reflected against the substance, calculating the level of the substance.
摘要翻译：一种用于基于雷达的在具有至少一个干扰结构（16a-c）的罐（13）中测量物质水平的方法，包括以下步骤：（i）在多个辐射波瓣（ 15a-b; 15a-d），其中的每一个分别指向物质，并且其中至少一个朝向干扰结构; （ii）对于每个检测到时间上分辨的反射物体的微波信号的辐射波瓣以及针对干扰结构反射的检测微波信号的波瓣中的至少一个; （iii）基于检测到的微波信号的信号强度，区分已被反映的物质的检测到的微波信号; 和（iv）基于区分为被反映物质的微波信号的至少一个的传播时间，计算物质的水平。

2. 发明授权

US06795015B2 Bottom reflector for a radar-based level gauge 有权
标题翻译：用于雷达液位计的底部反射器
公开(公告)号：US06795015B2
公开(公告)日：2004-09-21
申请号：US10353836
申请日：2003-01-29
申请人： Kurt Olov Edvardsson
发明人： Kurt Olov Edvardsson
IPC分类号： G01S1308
CPC分类号： G01F23/284 , H01Q15/006 , H01Q15/008 , H01Q15/14 , H01Q15/22
摘要： A bottom reflector for a radar-based level gauge, which measures a level of a liquid stored in a tank by means of transmitting a microwave signal towards the surface of the liquid from the top of the tank, receiving the microwave signal as reflected against the surface of the liquid, and calculating the level of the liquid from the propagation time of the transmitted and reflected microwave signal, wherein the bottom reflector is adapted to be mounted close to the bottom of the tank and comprises a reflecting structure having a first reflection coefficient for the microwave signal when the level of the liquid is above the reflecting structure and a second reflection coefficient for the microwave signal when the level of the liquid is below the reflecting structure, wherein the first reflection coefficient is substantially lower than the second reflection coefficient.
摘要翻译：用于基于雷达的液位计的底部反射器，其通过从罐的顶部向液体的表面传输微波信号来测量储存在罐中的液体的液位，接收微波信号，反射为反射并且根据透射和反射的微波信号的传播时间计算液体的液位，其中底部反射器适于安装在靠近储罐的底部，并且包括具有第一反射系数的反射结构当液面高于反射结构时的微波信号，以及当液面低于反射结构时微波信号的第二反射系数，其中第一反射系数基本上低于第二反射系数。

3. 发明授权

US07106247B2 Radar level gauge with antenna arrangement for improved radar level gauging 有权
标题翻译：具有天线布置的雷达液位计，用于改进雷达液位计
公开(公告)号：US07106247B2
公开(公告)日：2006-09-12
申请号：US10687925
申请日：2003-10-20
申请人： Kurt Olov Edvardsson
发明人： Kurt Olov Edvardsson
IPC分类号： G01F23/284 , G01S13/08
CPC分类号： G01F23/284 , G01S7/03
摘要： The present invention relates to a radar level gauge (1) comprising an antenna (2), a tank sealing (3), an electronics unit (4) and a waveguide feed (5) between the electronics unit (4) and the antenna (2). The waveguide (5) is essentially straight and has a 90°-symmetric cross section and is further arranged to accommodate two essentially orthogonal waveguide modes. The waveguide (5) further has a length (I) below two times the range resolution of said radar level gauge (1). The present invention further relates to a method for improved radar level gauging using a radar level gauge (1) as above.
摘要翻译：本发明涉及一种雷达液位计（1），包括在电子单元（4）和天线（4）之间的天线（2），水箱密封（3），电子单元（4）和波导馈送（5） 2）。波导（5）基本上是直的并且具有90°对称的横截面，并且还被布置成适应两个基本正交的波导模式。波导（5）还具有低于所述雷达液位计（1）的范围分辨率的两倍的长度（I）。本发明还涉及使用如上所述的雷达液位计（1）来改进雷达液位计的方法。

4. 发明授权

US06859166B2 Antenna device for radar-based level gauging 失效
标题翻译：天线装置，用于基于雷达的液位计
公开(公告)号：US06859166B2
公开(公告)日：2005-02-22
申请号：US10309601
申请日：2002-12-04
申请人： Kurt Olov Edvardsson
发明人： Kurt Olov Edvardsson
IPC分类号： G01F23/284 , H01Q1/08 , H01Q1/12 , H01Q13/20 , H01Q13/22 , H01Q15/20 , H01Q19/10 , H01Q19/24 , H01Q21/00 , G01S13/08
CPC分类号： H01Q19/106 , G01F23/284 , H01Q1/08 , H01Q1/1264 , H01Q13/206 , H01Q13/22 , H01Q15/20 , H01Q19/24 , H01Q21/0043
摘要： An antenna device in a radar-based level gauge mounted at an opening in a roof of a tank, the antenna device comprising at least one elongated radiating structure, which has a length that is substantially larger, preferably more than 3-5 times longer, than a maximum cross-sectional length dimension of the opening; is oriented in a non-vertical position; and is configured and fed to produce an essentially vertical radiation beam directed downwards in the tank. Preferably, the antenna device is foldable and is inserted into the tank through the opening and oriented in the non-vertical position by means of folding the radiating structure.
摘要翻译：一种安装在罐顶部开口处的基于雷达的液位计中的天线装置，所述天线装置包括至少一个细长的辐射结构，该辐射结构的长度基本上较大，优选大于3-5倍，比开口的最大横截面长度尺寸; 面向非垂直位置; 并且被配置和进给以产生在罐中向下指向的基本上垂直的辐射束。优选地，天线装置是可折叠的并且通过开口插入到罐中并且通过折叠辐射结构在非垂直位置定向。

5. 发明授权

US06759976B1 Method and apparatus for radar-based level gauging 有权
标题翻译：基于雷达的液位计的方法和装置
公开(公告)号：US06759976B1
公开(公告)日：2004-07-06
申请号：US10327426
申请日：2002-12-20
申请人： Kurt Olov Edvardsson
发明人： Kurt Olov Edvardsson
IPC分类号： G01S1308
CPC分类号： G01S13/103 , G01F23/284 , G01S7/024 , G01S7/025 , G01S7/026 , G01S13/88
摘要： A method for radar-based gauging of the level of a substance in a tank (13) having at least one interfering structure, e.g. a beam (16a); an agitator (16b) or a tank side wall (16c), comprises transmitting a microwave signal in a predetermined polarization state (LHCP) towards the surface (14) of the substance and the at least one interfering structure; detecting, separately in two different polarization states (LHCP, RHCP), microwave signals (32, 33, 34) as reflected against the surface of the substance and against the at least one interfering structure; distinguishing based on signal strengths of the microwave signals detected separately in the two different polarization states, the detected microwave signal (32), which has been reflected against the surface of the substance; and calculating based on a propagation time of the distinguished microwave signal the level of the substance in the tank.
摘要翻译：一种用于基于雷达的测量在具有至少一个干扰结构的罐（13）中的物质的水平的方法，例如，梁（16a）; 搅拌器（16b）或罐侧壁（16c），包括以预定的偏振态（LHCP）向所述物质的表面（14）和所述至少一个干涉结构传输微波信号; 分别以两种不同的极化状态（LHCP，RHCP）检测微波信号（32,33,34），反射到物质的表面并抵靠至少一个干扰结构; 基于在两个不同极化状态下分别检测的微波信号的信号强度来区分已被反射到物质表面的检测微波信号（32）; 并且基于识别的微波信号的传播时间来计算罐中物质的水平。

6. 发明授权

US4044355A Measurement of contents of tanks etc. with microwave radiations 失效
标题翻译：用微波辐射测量罐等内容
公开(公告)号：US4044355A
公开(公告)日：1977-08-23
申请号：US658075
申请日：1976-02-13
申请人： Kurt Olov Edvardsson
发明人： Kurt Olov Edvardsson
IPC分类号： G01F23/284 , G01S13/34 , G01S9/24
CPC分类号： G01F23/284 , G01S13/343
摘要： A microwave signal that varies linearly in frequency through a sweep period is radiated to and reflected back from a target body. In one mixer the directly generated signal is mixed with the reflected signal to produce a difference frequency corresponding to distance; another mixer mixes the directly generated signal with the same signal delayed for a constant time, to produce a reference difference frequency. Each difference frequency is digitized as a pulse train. The sweep period is divided into successive short time intervals, each of which can begin with a pulse of the lower frequency train and to each of which is assigned a numerical weighting factor, said factors for successive intervals differing stepwise in value. Pulses of each train occurring during each such interval are multiplied by the factor for the interval. All such multiplied pulses are counted through the sweep period to obtain a pair of pulse totals, and a quotient relationship between those totals gives an accurate measure of distance.
摘要翻译：通过扫描周期在频率上线性变化的微波信号被辐射并从目标体反射回来。在一个混频器中，直接产生的信号与反射信号混合以产生对应于距离的差频; 另一个混频器将直接产生的信号与延迟恒定时间的相同信号进行混频，产生参考差频。每个差频数字化为脉冲串。扫描周期被划分成连续的短时间间隔，每个间隔可以以较低频率列的脉冲开始，并且每个脉冲分配有数字加权因子，所述连续间隔的因子在值上是逐步变化的。在每个这样的间隔期间发生的每个火车的脉冲乘以间隔的因子。所有这样的倍增脉冲通过扫描周期进行计数以获得一对脉冲总数，并且这些总和之间的商关系给出了距离的精确测量。

7. 发明授权

US07149578B2 Implantable medical device with slotted housing serving as an antenna 失效
标题翻译：具有开槽外壳的植入式医疗设备用作天线
公开(公告)号：US07149578B2
公开(公告)日：2006-12-12
申请号：US10682954
申请日：2003-10-10
申请人： Kurt Olov Edvardsson
发明人： Kurt Olov Edvardsson
IPC分类号： A61N1/372
CPC分类号： A61N1/3752
摘要： An implantable medical device has a conductive housing, electronic circuitry for the operation of the implantable medical device, and radio frequency circuitry for transmitting and/or receiving radio frequency signals, the electronic circuitry and the radio frequency circuitry being interconnected and arranged within in the housing. The housing has at least one slot therein, and a slot feed operatively interconnected between the radio frequency circuitry and the slot. The electrically conductive housing provided with the at least one slot is operable as an antenna for the radio frequency signals. The electric circuitry, the radio frequency circuitry, and the interconnection can be enclosed by the housing so that they are shielded from external radiation in any direction.
摘要翻译：可植入医疗装置具有导电外壳，用于可植入医疗装置的操作的电子电路和用于发射和/或接收射频信号的射频电路，电子电路和射频电路互连并布置在壳体内。外壳在其中具有至少一个插槽，并且在射频电路和插槽之间可操作地互连的插槽馈送。设置有至少一个时隙的导电外壳可用作射频信号的天线。电路，射频电路和互连可以由壳体包围，使得它们在任何方向上都不受外部辐射的遮挡。

8. 发明授权

US06950055B2 Method and an apparatus for insulation of a radar level gauge 有权
标题翻译：一种用于雷达液位计绝缘的方法和装置
公开(公告)号：US06950055B2
公开(公告)日：2005-09-27
申请号：US10687975
申请日：2003-10-20
申请人： Kurt Olov Edvardsson , Anders Jirskog , Magnus Ohlsson
发明人： Kurt Olov Edvardsson , Anders Jirskog , Magnus Ohlsson
IPC分类号： G01F23/284 , G01S13/08
CPC分类号： G01F23/284
摘要： There is provided a radar level gauge using microwaves for measuring a level of a surface of a product in a tank, comprising an antenna for transmitting microwaves to the surface and receiving microwaves reflected by the surface, a measurement circuitry feeding said antenna through a hollow wave guide and said wave guide including at least an antenna wave guide member, at one end couplable to the antenna and at its other end having an opening in an intersection across the wave guide, wherein the radar level gauge further comprises: a dielectric barrier extending along said intersection across the opening of said antenna wave guide member for non-conductively separating said antenna wave guide member from the measurement circuitry, said dielectric barrier having a first side facing the wave guide in a direction towards the antenna wave guide member and said dielectric barrier having a second side facing a direction substantially away from said antenna wave guide member.
摘要翻译：提供了一种使用微波测量罐中产品表面水平的雷达液位计，包括用于将微波传输到表面并接收由表面反射的微波的天线，测量电路通过中空波馈送所述天线引导件和所述波导包括至少一个天线波导构件，其一端可耦合到天线，并且在另一端具有穿过波导管的相交处的开口，其中雷达液位计还包括：沿着所述交叉点穿过所述天线波导构件的开口，用于非导电地将所述天线波导构件与测量电路分离，所述介质阻挡层具有朝向天线波导构件和所述介质阻挡层的方向面向波导管的第一侧面具有面向远离所述天线波导构件的方向的第二侧。

9. 发明授权

US06834546B2 Device and method in a level gauging system 有权
公开(公告)号：US06834546B2
公开(公告)日：2004-12-28
申请号：US10378072
申请日：2003-03-04
申请人： Kurt Olov Edvardsson
发明人： Kurt Olov Edvardsson
IPC分类号： G01F23284
CPC分类号： G01F23/284
摘要： The invention relates to a pressure sealing device and a method for decreasing the cut-off frequency in such a pressure sealing device used in a radar level gauging system for gauging a filling level of a product kept in a container, the sealing device comprises a waveguide for feeding microwaves in at least one of the following mode types: transverse electric mode, transverse magnetic mode or hybrid mode. Said waveguide is sealed by a dielectric material. A center conductor is arranged at least partially within said dielectric material.

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