# US 2014/0191766 A1 · Device and method for monitoring the state of a system component > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2014/0191766 A1 - Document ID: US20140191766A1 - Status: Published application - Kind: A1 - Application number: 14/239,418 - Filed: 2011-08-18 - Published: 2014-07-10 - Earliest claimed: 2011-08-18 - Assignees: Siemens Aktiengesellschaft - Inventors: Jörg Hassel; Gotthard Rieger; Roland Weiss; Hermann-Josef Wiegand - Web page: https://patentgrep.com/patent/US20140191766A1 ## CPC - G01R 31/58: Testing of lines, cables or conductors (testing of electric windings G01R31/72) - G01R 33/093: {using multilayer structures, e.g. giant magnetoresistance sensors (thin magnetic films H01F10/00)} - G01R: MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES (indicating correct tuning of resonant circuits H03J3/12) ## Abstract In order to detect the current state of a system component, e.g. to display whether an electrical conductor, a cable or the like, is currently live, a field generator that generates a magnetic field in the environment of the system part is provided, which generator is connected to an organic magnetoresistive OMR semiconductor element that is arranged stationary in the environment of the system component to be monitored, and a voltage source for generating an electrical voltage between two electrodes of the OMR semiconductor element is provided. The device and the method can be fitted in a simple manner and cost-effectively to almost any system part, even at a later stage to already existing systems. A corresponding display shows the desired information locally limited and in the simplest manner: if the electric conductor is currently energized, an additional evaluation is not necessary. ## Claims ### Claim at position 1 1-9. (canceled) ### Claim 10 An apparatus for determining a state of a current-carrying installation component, comprising: a field generating device configured to generate a magnetic field in a vicinity of the installation component, the field generating device coupled to the installation component to be monitored, an organic magnetoresistive semiconductor element disposed in a stationary manner in the vicinity of the installation component to be monitored, and a voltage source for generating an electrical voltage between two electrodes of the organic magnetoresistive semiconductor element. ### Claim 11 (depends on 10) The apparatus as claimed in claim 10, wherein the organic magnetoresistive semiconductor element comprises a layer surrounding the current-carrying installation component at least in regions. ### Claim 12 (depends on 10) The apparatus as claimed in claim 10, wherein the organic magnetoresistive semiconductor element is disposed on a flexible substrate. ### Claim 13 (depends on 10) The apparatus as claimed in claim 10, further comprising a measuring device for measuring a variable proportional to a current flowing through the organic magnetoresistive semiconductor element or a voltage present at the organic magnetoresistive semiconductor element. ### Claim 14 (depends on 10) The apparatus as claimed in claim 10, wherein the voltage source is a constant-voltage source. ### Claim 15 (depends on 10) The apparatus as claimed in claim 10, wherein an organic light emitting diode is formed by the organic magnetoresistive semiconductor element. ### Claim 16 (depends on 12) The apparatus as claimed in claim 12, wherein the organic magnetoresistive semiconductor element is fitted to the installation component in a reversible manner. ### Claim 17 A method for determining a state of a potentially current-carrying installation component, comprising: generating a magnetic field on the installation component, detecting the magnetic field in a vicinity of the installation component with an organic magnetoresistive organic magnetoresistive semiconductor element, and setting an electrical variable configured to be dependent on the magnetic field detected by means of the semiconductor element. ### Claim 18 (depends on 17) The method as claimed in claim 17, further comprising: forming an organic light emitting diode by the organic magnetoresistive semiconductor element; and setting the electrical voltage to a value at which the organic light emitting diode emits light only if the installation component to be monitored fulfills a predetermined criterion. ### Claim 19 (depends on 10) The apparatus as claimed in claim 10, wherein the current-carrying installation component comprises an electrical conductor of a technical installation. ### Claim 20 (depends on 11) The apparatus as claimed in claim 11, wherein the layer surrounding the current-carrying installation component comprises a hollow cylinder. ### Claim 21 (depends on 15) The apparatus as claimed in claim 15, the electrical voltage being set to a value at which the organic light emitting diode emits light only if the installation component to be monitored fulfills a predetermined criterion. ### Claim 22 (depends on 16) The apparatus as claimed in claim 16, wherein the organic magnetoresistive semiconductor element is a clip band, a hook-and-loop strip or an adhesive tape. ### Claim 23 (depends on 11) The apparatus as claimed in claim 11, wherein the organic magnetoresistive semiconductor element is disposed on a flexible substrate. ### Claim 24 (depends on 23) The apparatus as claimed in claim 23, further comprising a measuring device for measuring a variable proportional to a current flowing through the organic magnetoresistive semiconductor element or a voltage present at the organic magnetoresistive semiconductor element. ### Claim 25 (depends on 24) The apparatus as claimed in claim 24, wherein the voltage source is a constant-voltage source. ### Claim 26 (depends on 25) The apparatus as claimed in claim 25, wherein an organic light emitting diode is formed by the organic magnetoresistive semiconductor element. ### Claim 27 (depends on 26) The apparatus as claimed in claim 26, wherein the organic magnetoresistive semiconductor element is fitted to the installation component in a reversible manner. ### Claim 28 (depends on 27) The apparatus as claimed in claim 27, wherein the organic magnetoresistive semiconductor element is a clip band, a hook-and-loop strip or an adhesive tape. ### Claim 29 A system for determining a state of a potentially current-carrying installation component, comprising: means for generating a magnetic field on the installation component; means for detecting the magnetic field in a vicinity of the installation component; and means for setting an electrical variable configured to be dependent on the magnetic field.