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Radar level meter

A radar level gauge and waveguide technology, which is used in liquid/fluid solid measurement, engine lubrication, instruments, etc., can solve the problems affecting measurement accuracy and radar level gauge measurement interference, so as to improve measurement accuracy and reduce reflections. The effect of electromagnetic waves and solving impedance matching problems

Pending Publication Date: 2020-11-24
BEIJING GODA INSTR +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In the existing radar level gauge, due to the reflection of electromagnetic waves, it interferes with the measurement of the radar level gauge and affects the measurement accuracy.

Method used

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Embodiment Construction

[0015] Embodiments of the present application will be described below with reference to the accompanying drawings. It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined arbitrarily with each other.

[0016] Such as Figure 1-Figure 4 As shown, the embodiment of the present application provides a radar level gauge, including a circuit board assembly 1 and a waveguide 2, and the circuit board assembly 1 includes a circuit board 11 and a first board surface 111 mounted on the circuit board 11 ( figure 2 and image 3 The patch antenna 12 on the lower plate surface in the center), the waveguide 2 is fixedly connected with the circuit board 11, the waveguide 2 is provided with a waveguide 21, and the entrance end of the waveguide 21 ( figure 2 and image 3 There is a gap between the end surface of the upper end) and the first board surface 111 of the circuit board 11, the gap forms a ...

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Abstract

The invention discloses a radar level meter which comprises a circuit board assembly and a waveguide body. The circuit board assembly comprises a circuit board and a patch antenna installed on a firstboard surface of the circuit board. The waveguide body is fixedly connected with the circuit board, a wave guide path is arranged in the waveguide body, a gap is formed between the end surface of theinlet end of the wave guide path and the first board surface of the circuit board, the gap forms a transition region, and the transition region is arranged in a manner that the phase of reflected electromagnetic waves is opposite to that of electromagnetic waves reflected by the waveguide body. In the radar level meter, the phase of the electromagnetic waves reflected by the transition region isopposite to that of the electromagnetic waves reflected by the waveguide body, so that the electromagnetic waves reflected by the waveguide body can be counteracted, the interference of the reflectedelectromagnetic waves can be effectively reduced, and the measurement precision of the radar level meter is improved.

Description

technical field [0001] This article relates to but not limited to the technical field of level measurement, in particular to a radar level gauge. Background technique [0002] The radar level gauge is a measuring instrument based on the principle of time travel. The electromagnetic wave runs at the speed of light. When the electromagnetic wave hits the surface of the material, it is reflected back and received by the instrument. The running time of the electromagnetic wave can be converted into a level signal through electronic components. [0003] In the existing radar level gauge, due to the reflection of electromagnetic waves, the measurement of the radar level gauge is disturbed, which affects the measurement accuracy. Contents of the invention [0004] The following is an overview of the topics described in detail in this article. This summary is not intended to limit the scope of the claims. [0005] An embodiment of the present application provides a radar level g...

Claims

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Application Information

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IPC IPC(8): G01F23/284
CPCG01F23/284
Inventor 周雷
Owner BEIJING GODA INSTR