Radar fill level measurement device having a self-testing function
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United States of America Patent
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Oct 13, 2020
Grant Date -
Jan 4, 2018
app pub date -
Jun 28, 2017
filing date -
Jun 29, 2016
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Abstract
An exemplary fill level measurement device comprising a radar module can be provided, along with method, computer-executable instructions and computer-readable medium. The radar module can comprise a receiving channel for receiving a radar signal reflected by a filling medium. The fill level measurement device can also comprise a test module for testing the functionality of the receiving channel. The test module can comprise a test input (for feeding in a test signal having a test frequency, and a feeding-in apparatus configured to feed at least part of the test signal into the receiving channel. The feeding-in apparatus can be configured to superpose and/or combine the test signal with the radar signal reflected by the filling medium. The receiving channel of the radar module can further comprise a mixing device having an intermediate frequency output. The mixing device can be configured to output the test frequency of the test signal at the intermediate frequency output when the receiving channel is functioning correctly.
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