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Level measuring device with series arrangement of functional units

A functional unit, level measurement technology, applied in measurement devices, liquid level indicators for physical variable measurement, circuit devices, etc., can solve problems such as low available electric power

Active Publication Date: 2021-09-21
VEGA GRIESHABER GMBH & CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] If such a level measuring device is connected to a two-wire circuit, the power consumption remains constant and fixed at least temporarily due to two-wire operation (4-20mA or constant current with superimposed digital communication), and the available electrical power currently available may be lower than the current power required during the measurement phase

Method used

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  • Level measuring device with series arrangement of functional units
  • Level measuring device with series arrangement of functional units
  • Level measuring device with series arrangement of functional units

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Embodiment Construction

[0032] The drawings are schematic and not to scale.

[0033] In the following description of the drawings, if the same reference signs are used in different figures, these refer to the same or similar elements. However, it is also possible to use different reference signs to refer to the same or similar elements.

[0034] figure 1 is the block diagram of the level measuring device. The level measuring device has a sensor loop interface 101 including an EMC input circuit 103 for current limiting, voltage limiting, EMC filtering and explosion protection (if applicable). Furthermore, the interface 101 also has a loop current regulator 105 , a loop current actual value acquisition device 104 and a shunt 106 for setting the loop current target value.

[0035] The loop current actual value acquisition device (current sensor) 104 is used to sense the current actual value as an input variable of the current regulator 105 .

[0036] A current regulator 105 is used to regulate the l...

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PUM

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Abstract

The invention relates to a fill-level measuring device comprising at least two functional units which are connected in series with respect to an external power supply of the fill-level measuring device. Decoupling circuits are located between the functional units for distributing the available power between the two functional units as required. Furthermore, at least one second functional unit has an energy store which serves as an energy buffer for equalizing fluctuating power requirements of the second functional unit. Thus, the start-up time of the level measuring device can be shortened.

Description

technical field [0001] The invention relates to a fill-level measuring device with a series arrangement of functional units. In particular, the invention relates to a level measuring device in the form of a transit-time sensor operating according to radar, time-domain reflectometry (TDR) or ultrasonic principles. Background technique [0002] Level measuring devices operating according to the radar, TDR or ultrasonic principle (in particular, time-of-flight sensors for level measurement) usually have a combination of energy-consuming measuring and evaluation phases or pause periods with much lower power requirements. Highly fluctuating energy consumption due to transitions. [0003] The level measuring devices each have different functional units, in particular sensor electronics, measurement electronics and communication circuits. One or more of these functional units typically have highly fluctuating power requirements. "High volatility" means that the maximum power con...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J15/00H02J1/00G08C19/02
CPCG08C19/02H02J1/00H02J15/00H02J1/02H02J7/345G01F23/28H02J1/06H02J1/102G01F23/284G01F23/2962H02J3/28H02J1/106G01F23/802G01F23/80G01F23/292
Inventor 京特·基奇托马斯·德克卡尔·格里斯鲍姆
Owner VEGA GRIESHABER GMBH & CO