EP 2331917 A1 20110615 - FILLING LEVEL MEASURING DEVICE OPERATING WITH MICROWAVES
Title (en)
FILLING LEVEL MEASURING DEVICE OPERATING WITH MICROWAVES
Title (de)
MIT MIKROWELLEN ARBEITENDES FÜLLSTANDSMESSGERÄT
Title (fr)
APPAREIL DE MESURE DE NIVEAU FONCTIONNANT À MICRO-ONDES
Publication
Application
Priority
- EP 2009060404 W 20090812
- DE 102008050329 A 20081010
Abstract (en)
[origin: WO2010040580A1] The invention relates to a filling level measuring device operating with microwaves according to the propagation time principle for measuring the filling level of filling materials (5) in containers (3), with which microwave signals (SM, SN, SL) can be sent into the container (3) on several different signal paths and the associated echo signals (EM, EN, EL) of said microwave signals can be recorded and the measurement results obtained on the different signal paths can be evaluated separately from each other, having measuring device electronics (7), having a microwave generator (9) for successively generating microwave signals (SM, SN, SL) having different usable frequencies (fm, fn, fl), and having a frequency-selective passive antenna arrangement (11a, 11b, 11c, 11d, 11e) which is connected thereto and which comprises several antennas, which are used to send the different microwave signals (SM, SN, SL) into the container (3) consecutively, and to receive the echo signals (EM, EN, EL) thereof reflected back to the antenna arrangement (11a, 11b, 11c, 11d, 11e), which comprises several frequency selective elements (FM, FN, FL), particularly band-pass filters, through which one of the different usable frequencies (fm, fn, fl) can pass in each case, in which a uniquely associated signal path is specified for each of the different microwave signals (SM, SN, SL) and the echo signal (EM, EN, EL) thereof through the antennas and the frequency-selective elements (FM, FN, FL), said microwave signal being sent into the container (3) through said uniquely associated signal path and the echo signal (EM, EN, EL) thereof reflected back to the antenna arrangement being received and fed to the measuring device electronics (7) through said uniquely associated signal path, and a device (21) provided in the measuring device electronics (7) which associates the consecutively incoming echo signals (EM, EN) to the associated signal path.
IPC 8 full level
G01F 23/284 (2006.01)
CPC (source: EP US)
G01F 23/284 (2013.01 - EP US)
Citation (search report)
See references of WO 2010040580A1
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO SE SI SK SM TR
Designated extension state (EPC)
AL BA RS
DOCDB simple family (publication)
DE 102008050329 A1 20100415; CN 102177420 A 20110907; CN 102177420 B 20130213; EP 2331917 A1 20110615; US 2011193567 A1 20110811; US 8884632 B2 20141111; WO 2010040580 A1 20100415
DOCDB simple family (application)
DE 102008050329 A 20081010; CN 200980140313 A 20090812; EP 09781721 A 20090812; EP 2009060404 W 20090812; US 200913122749 A 20090812