Current production equipment for generating and monitoring and measuring the electric current

A current generation and current measurement technology, applied in the direction of measuring current/voltage, measuring electrical variables, measuring devices, etc., can solve problems such as failure of current limiting network components

Active Publication Date: 2014-04-23
VEGA GRIESHABER GMBH & CO
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

One cause of such a deviation could be, for example, a component failure in the current limiting network

Method used

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  • Current production equipment for generating and monitoring and measuring the electric current
  • Current production equipment for generating and monitoring and measuring the electric current

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0061] figure 1 A current generating device 100 for generating and simultaneously monitoring the measured current 101 corresponding to the measured value of the sensor 102 is shown. The figure shows a first current source 103 that generates a measurement current 101. This current is the output current of the current source 103 independent of the load. The figure also shows the second current source 104 that feeds the test current 110 into the first circuit 109. As a result of the feeding, a compensation current 105 is generated. In other words, the second current source 104 also generates the compensation current 105. In this case, the generated compensation current 105 compensates at least a part of the measurement current 101.

[0062] The figure also shows a detection circuit 106, which in this case is implemented in the form of a voltage measurement performed by the microcontroller 113 at the first node 114. The detection circuit 106 is designed to detect the deviation o...

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Abstract

The device (100) has a current source (103) generating a measuring current (101). Another current source (104) generates a compensating current (105) in order to compensate a part of the measuring current. A detection circuit (106) detects a deviation of the measuring current from a nominal value on the basis of the compensating current, where detection of the deviation is performed using a voltage measurement process. A current-sensing resistor unit (108) is provided such that compensating current flows through the current-sensing resistor unit. Independent claims are also included for the following: (1) a method for the generation and simultaneous monitoring of a measuring current for one of a level meter, a pressure gauge and a flowmeter (2) a program element instructing a processor to perform a method for the generation and simultaneous monitoring of a measuring current (3) a computer-readable medium to perform a method for the generation and simultaneous monitoring of a measuring current.

Description

[0001] References to related applications [0002] This application claims the rights of the filing date of the European patent application EP 09 152 814.1 filed on February 13, 2009. Therefore, the disclosure of the European patent application is incorporated herein by reference, and this application claims on February 13, 2009 U.S. Provisional Patent Application 61 / 152,369 filed on the date of filing, therefore, the disclosure of the U.S. Provisional Patent Application is incorporated herein by reference. Technical field [0003] The invention relates to the generation and monitoring of electric current. The present invention particularly relates to a current generating device for generating and simultaneously monitoring the measuring current of a level gauge, a pressure gauge or a flow meter, to a level gauge with a current generating device, to a pressure gauge with a current generating device, and to a current generating device. The flow meter of the device relates to a metho...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01R19/00
CPCG01D3/06
Inventor 安德烈亚斯·布莱辛
Owner VEGA GRIESHABER GMBH & CO
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