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Device with two coupling elements for determining and monitoring the fill level

A coupling element and filling level technology, applied in the direction of mechanical equipment, electrical components, engine components, etc., can solve the problems that the distance between the antenna and the filling material cannot be well resolved, and the filling level cannot be accurately determined.

Active Publication Date: 2020-05-05
EHNDRESS KHAUZER GMBKH KO KG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] Fill-level measuring devices with wide-band transmission signals cannot resolve the distance between the antenna and the filling substance well and therefore cannot determine the fill level as precisely as desired

Method used

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  • Device with two coupling elements for determining and monitoring the fill level
  • Device with two coupling elements for determining and monitoring the fill level
  • Device with two coupling elements for determining and monitoring the fill level

Examples

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Embodiment Construction

[0028] figure 1 An inventive device 1 for transmitting and receiving electromagnetic waves (EM waves) to determine and monitor the filling level of a medium (not shown) in a container (not shown) via the travel time of the EM waves is shown. The device 1 comprises a first hollow conductor 2 having a first coupling element P1 for out-coupling and in-coupling electromagnetic waves, wherein a first end face of the first hollow conductor 2 3 is closed and the second end face 4 of the first hollow conductor 2 is opened. In this way, EM waves that are outcoupled via the first coupling element P1 can be emitted via the second end face and EM waves received via the second end face 4 of the first hollow conductor can be incoupled at the first coupling element P1 . The first hollow conductor 2 is embodied cylindrically and has a diameter dimensioned in such a way that only the fundamental mode is excited. Preferably, the fundamental mode is a mode with a very low cut-off frequency, es...

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PUM

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Abstract

The present invention relates to a device for transmitting and receiving electromagnetic waves (EM waves) for determining and monitoring the filling level of a medium in a container by means of the travel time of the EM waves, the device comprising a first hollow conductor ( 2) with a first coupling element (P1) for decoupling and coupling EM waves; at least one second hollow conductor (5) with a second coupling element (P2) for decoupling and coupling EM waves; horn shaped radiator (8) for emitting and focusing EM waves, wherein the first waveguide (2) and the second waveguide (5) are dimensioned such that from the horn-shaped radiator (8) in a discrete and low intensity manner Emitting EM waves decoupled from the first coupling element (P1) and the second coupling element (P2), or causing the scattered and low-intensity EM waves received by the horn radiator (8) to couple to the first coupling element (P1) and the second coupling element (P2) and cause the EM waves decoupled only from the first coupling element (P1) to be emitted in a focused and high-intensity manner from the horn radiator (8), or radiated by the horn The focused and high-intensity EM waves received by the device (8) are only coupled onto the first coupling element (P1).

Description

technical field [0001] The invention relates to a device for emitting and receiving electromagnetic waves (EM waves) for determining and monitoring the filling level of a medium in a container by means of the travel time of the EM waves. Background technique [0002] Fill level measuring devices of conventional pulse radars regularly have a transmitter system with a pulse generating system connected to a control unit. The pulse generating system generates for each measurement a transmit signal consisting of microwave pulses with a fixed predetermined center frequency and a predetermined pulse repetition frequency. The microwave pulses have a fixed predetermined center frequency, eg 26 GHz or 78 GHz. An antenna is mounted on the container above the highest filling level to be measured, which antenna is oriented towards the filling substance and transmits a transmission signal into the container. Then, after a travel time depending on the distance to the filling substance, t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01F23/284H01Q1/22H01Q13/02
CPCG01F23/284H01Q1/225H01Q13/025H01Q13/02
Inventor 托马斯·布洛特
Owner EHNDRESS KHAUZER GMBKH KO KG