Anti-interference radar material level meter

Abstract

The invention provides an anti-interference radar material level meter which comprises a device body, an emitter and reception antennas. The device body includes a square casing, the emitter is fixedly connected to the front end of the device body, the two reception antennas are fixedly connected to the left and right sides of the device body respectively, each reception antenna includes a sector-shaped casing, the direction of the sector of the reception antenna is the same with that of the termination of the emitter, a high-frequency filter and a low-frequency filter are fixedly connected inthe reception antenna, the signal input end of each high-frequency filter is electrically connected with the corresponding reception antenna, the signal output end of the high-frequency filter is electrically connected with the signal input end of the corresponding low-frequency filter, and the signal output end of the low-frequency filter is electrically connected with an electronic device in the device body. The material level meter has the advantages including filtering electromagnetic wave signals emitted not by the emitter, avoiding interference, ensuring the accuracy of signal reception, and improving the measuring precision.

Description

technical field [0001] The invention relates to the field of measuring equipment, in particular to an anti-jamming radar level gauge. Background technique [0002] The radar level meter adopts the measurement method of microwave pulses. It transmits microwaves with very low power, and then collects the microwaves reflected by the measured object, and uses the time difference to calculate the distance. Its beam energy is low, and it can be installed in various metal and non-metal containers. Or in the pipeline, the non-contact continuous measurement of the level of liquid, slurry and granular material is suitable for occasions with large changes in dust, temperature and pressure, and the presence of inert gas and steam, and has a wide range of applications; but in reality, various Electromagnetic waves exist everywhere, whether they are man-made electromagnetic waves with fixed frequency or natural electromagnetic waves with non-fixed frequency, they will affect the receiving...

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Problems solved by technology

[0002] The radar level meter adopts the measurement method of microwave pulses. It transmits microwaves with very low power, and then collects the microwaves reflected by the measured object, and uses the time difference to calculate the distance. Its beam energy is low, and it can be installed in various metal and non-metal containers. Or in the pipeline, the non-contact continuous measurement of the level of liquid, slurry and granular material is suitable for occasions with large changes in dust, temperature and pressure, and the presence of inert gas and steam, and has a wide range of applications; but in reality, various Electromagnetic waves exist everywhere, whether they are man-made electromagnetic waves with a fixed frequency or natural electromagnetic waves with an unfixed frequency, they will affect the received signal of the radar level gauge, thereby affecting the detection accuracy.

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