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1. 发明专利

JPH1186176A MEASURING INSTRUMENT 失效
公开(公告)号：JPH1186176A
公开(公告)日：1999-03-30
申请号：JP19750998
申请日：1998-07-13
申请人： ENDRESS HAUSER GMBH CO
发明人： LALLA ROBERT DR
IPC分类号： G08C19/00 , G01D3/02 , G08C19/02
摘要： PROBLEM TO BE SOLVED: To facilitate the replacement of sensor assemblies, without changing an evaluation assembly and also to perform DC conductive separation of dielectric strength at low cost by initializing a sensor assembly, based on the data stored in a nonvolatile digital memory and sending a data set to the evaluation assembly via a serial interface. SOLUTION: A sensor assembly 10 includes a nonvolatile digital memory 40 to store all the data, which are necessary for the assembly 10 for acquiring the measurement data and for an evaluation assembly 20 for processing the measurement data. Therefore, the assemblies 20 can be replaced with no changes required to them. Furthermore, the data can only be sent to the assembly 20 from the assembly 10 in a single direction via a unidirectional interface 22. As a result, DC conductive separation of dielectric strength is performed easily between both the assemblies 10 and 20.

2. 发明专利

JP2001056246A METHOD AND DEVICE FOR DETERMINING FILLING LEVEL OF FILLING MATERIAL IN VESSEL HIGHLY PRECISELY 失效
公开(公告)号：JP2001056246A
公开(公告)日：2001-02-27
申请号：JP2000211644
申请日：2000-07-12
申请人： ENDRESS HAUSER GMBH CO
发明人： LALLA ROBERT DR , MUELLER ROLAND , SINZ MICHAEL , SPANKE DIETMAR
IPC分类号： G01F23/284 , G01S7/40 , G01S13/34 , G01S13/88
摘要： PROBLEM TO BE SOLVED: To provide a method and a device capable of executing high-precision filling level measurement in a vessel, regardless of generation of multipath propagation or multi-mode propagation. SOLUTION: This method is a method for determining a filling level (q) of filling material 4 in a vessel 2 highly precisely. A measuring signal is transmitted in the direction of the surface 5 of the filling material 4 and reflected on the surface 5 as an echo signal, and the filling level (q) in the vessel 2 is inspected by a pulse transit time method by evaluation of an amplitude value and a phase value of the reflected echo signal. When inspecting the filling level (q), a generated error caused by an interfering signal interfering positively or negatively with the echo signal reflected normally on the surface 5 of the filling material 4 is compensated.

3. 发明专利

JP2000132781A DEVICE FOR TRANSMITTING SIGNAL BETWEEN RECEIVING STATION AND TRANSMITTING STATION AND FOR FEEDING CURRENT OF THE TRANSMITTING STATION 失效
公开(公告)号：JP2000132781A
公开(公告)日：2000-05-12
申请号：JP25309399
申请日：1999-09-07
申请人： ENDRESS HAUSER GMBH CO
发明人： LALLA ROBERT DR , SCHREIBER RONALD
IPC分类号： G08C19/02
摘要： PROBLEM TO BE SOLVED: To perform signal transmission suited for the situation of feeding power by connecting a parallel adjuster keeping input voltage and output voltage constant to the inputting side or the outputting side of a charge pump connected to the serial current adjuster of the transmitting station. SOLUTION: A circuit 24 provided at the transmitting station for transmitting a signal between the receiving station and the transmitting station and for feeding power of the transmitting station is provided with a current source 34 as a serial current adjuster and a current to be adjusted by an inputting side 25 is kept to be a fixed value by this adjuster 34. A comparatively high voltage UV is then formed and a voltage restricting circuit 42 executes voltage restriction in response to the exceeding of a prescribed voltage value and leads out excess current. The voltage UV sent to the output side of the DC current adjuster 34 is used as power feeding voltage of the charge pump 38, which keeps voltage UOut to be supplied for a signal processing circuit and the sensor on the outputting side to be constant by using a voltage adjuster 40 being a parallel adjuster.

4. 发明专利

JPH11264849A METHOD AND DEVICE FOR MEASURING REACTANCE TIME-DISCRETELY 失效
公开(公告)号：JPH11264849A
公开(公告)日：1999-09-28
申请号：JP34841198
申请日：1998-12-08
申请人： ENDRESS HAUSER GMBH CO
发明人： SCHREIBER RONALD , LALLA ROBERT DR
IPC分类号： G01R19/25 , G01R27/26 , H03H17/00 , H03H19/00 , H03M1/12 , H03M3/02
摘要： PROBLEM TO BE SOLVED: To reduce the influence of the input coupling of a narrow-band obstruction that is induced by an aliasing in the measurement of reactance that is controlled by clock time-discretely. SOLUTION: Excitation is made by voltage, current, or electric charge by a generator device 12 where reactance 10 is controlled by clock, an output signal is generated as the function of reactance to be measured from the discrete sample value of an evaluation device 14 by voltage, current, or electric charge by an evaluation device that is controlled by a clock, and the clock for controlling the generator device 12 and the evaluation device 14 is changed by frequency or phase modulation similarly.

5. 发明专利

JP2000055717A MEASURING METHOD FOR FILLED LEVEL OF FILLING MATERIAL INSIDE CONTAINER BY USE OF RADAR 失效
公开(公告)号：JP2000055717A
公开(公告)日：2000-02-25
申请号：JP12638499
申请日：1999-05-06
申请人： ENDRESS HAUSER GMBH CO
发明人： LALLA ROBERT DR , MUELLER ROLAND , SINZ MICHAEL
IPC分类号： G01F23/284 , G01S13/08 , G01S13/10
摘要： PROBLEM TO BE SOLVED: To enable precise computation of a coefficient of decrease in the course of operation, by finding the coefficient of decrease as a function of a group travel time, on the basis of the change in a phase difference, considering that the group velocity of an electromagnetic wave is different from the velocity of propagation by the coefficient of attenuation in a free space. SOLUTION: A transmission wave generator 22 continuously generates high-frequency oscillation of a microwave frequency to be transmitted, and an antenna 20 transmits a microwave into a pipe 16, receives an echo reflected by the surface 14 of a filling material 12, and supplies it to an evaluation circuit 30 through a reception change-over switch 26. Here, a small-diameter pipe 16 in which a microwave is propagated functions like a waveguide, and a microwave is propagated at a group velocity in a waveguide. This group velocity in smaller than the velocity of light in the air by the coefficient of attenuation. As against this, the phase velocity of the microwave inside the waveguide is larger than the velocity of light in the air by the inverse of the coefficient of attenuation. The evaluation circuit 30 finds a coefficient of attenuation as a function of a group travel time, on the basis of the change in the phase difference.

6. 发明专利

JP2000055715A FILLED-LEVEL MEASURING APPARATUS OPERATED BY MICROWAVE 失效
公开(公告)号：JP2000055715A
公开(公告)日：2000-02-25
申请号：JP12507999
申请日：1999-04-30
申请人： ENDRESS HAUSER GMBH CO
发明人： LALLA ROBERT DR , MUELLER ROLAND , STRUETT BERND
IPC分类号： G01F23/284 , G01S13/10
摘要： PROBLEM TO BE SOLVED: To enable high-precision measurement by finding the real time-interval between a plurality of points of an echo signal corresponding to a plurality of sampling points, from a time interval produced in a unit time between a plurality of points of time of an intermediate frequency signal, using a ratio of time expansion in a unit time determined by an evaluation circuit. SOLUTION: With a unit time τ set by a clock generator 37, a sample-and- hold circuit 29 and an analog-to-digital converter 31 are clock-controlled, and digital sampled values are stored in a memory 39. A computing unit 57 is an evaluation unit 41 determined a ratio of time expansion at the unit time τfrom a period P. The real time-interval Δt between two points of an echo signal corresponding to two sampling points of an intermediate frequency signal ZF is found, from the time interval between the two sampling points using this ratio of time expansion.

7. 发明专利

DE59814313D1 未知
公开(公告)号：DE59814313D1
公开(公告)日：2008-12-11
申请号：DE59814313
申请日：1998-09-07
申请人： ENDRESS & HAUSER GMBH & CO KG
发明人： LALLA ROBERT DR , SCHREIBER RONALD
IPC分类号： G08C19/02
摘要： The signal transmission and current supply device uses a 2-wire line between the transmission station and the reception station, for transmission of an analogue signal current which lies between 2 limit values, representing a parameter value provided by a sensor at the transmission station and simultaneously acting as the supply current for the latter. The transmission station has a controlled current source (34) provided by a series current regulator, coupled to a charge pump (38) providing the operating voltage for the sensor and an associated signal processor.

8. 发明专利

DE59813795D1 未知
公开(公告)号：DE59813795D1
公开(公告)日：2006-12-21
申请号：DE59813795
申请日：1998-05-06
申请人： ENDRESS & HAUSER GMBH & CO KG
发明人： LALLA ROBERT DR , MUELLER ROLAND DIPL-PHYS , SINZ MICHAEL
IPC分类号： G01F23/284 , G01S13/08 , G01S13/10

9. 发明专利

DE19730158A1 未知
公开(公告)号：DE19730158A1
公开(公告)日：1999-02-18
申请号：DE19730158
申请日：1997-07-14
申请人： ENDRESS HAUSER GMBH CO
发明人： LALLA ROBERT DR
IPC分类号： G08C19/00 , G01D3/02 , G08C19/02 , G01D1/00
摘要： The arrangement has a sensor component group (10) with sensors (12,13) and analogue/digital converters (15,17) to digitise analogue measurement signals from the sensors. A processing component group (20) performs digital processing of the digital measurement data. Program code and sensor specific coefficient for processing the data are stored in a non-volatile memory (40) in the sensor group. The sensor component group has a control circuit which initiates the transmission of the memory contents and the digital measurement data via a unidirectional serial interface (22) to the processing component group. The non-volatile memory in the sensor unit contains initialisation data for the sensor group, program code and coefficients for the processing of the digital data. Immediately after the sensor group is switched on, the sensor control circuit causes the reading of stored data, initialisation of the sensor and the transmission of memory content via serial interface to the processing unit. When the memory content has been transmitted, it causes regular transmission of digital measurement data blocks via the serial interface.

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