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Sampling circuit and detection device

A sampling circuit and circuit technology, applied in measuring devices, liquid/fluid solid measurement, liquid level indicators for physical variable measurement, etc., can solve the problems of poor filtering effect and difficulty in meeting the high precision requirements of aircraft oil level detection, etc. To achieve the effect of improving ability, realizing sampling accuracy and improving sampling accuracy

Active Publication Date: 2017-07-28
AVIC NANHANG SHENZHEN MEASUREMENT & CONTROL TECH
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  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

[0004] The existing filter sampling circuit usually has a poor filtering effect, and it is difficult to meet the high precision requirements for aircraft oil level detection

Method used

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  • Sampling circuit and detection device

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Embodiment Construction

[0025] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0026] It should be noted that if there are directional indications (such as up, down, left, right, front, back, etc.) involved in the embodiments of the present invention, the directional indications are only used to explain a certain posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication also changes accordingly.

[0027] In addition, if there are descriptions involving "first", "sec...

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Abstract

The invention discloses a sampling circuit and a detection device, wherein the sampling circuit comprises a reverse amplification circuit, a synchronous scale amplification circuit and a voltage following circuit; an input end of the reverse amplification circuit inputs a voltage sampling signal; an output end of the reverse amplification circuit is connected with an input end of the synchronous scale amplification circuit; an output end of the synchronous scale amplification circuit is connected with the voltage following circuit; an output end of the voltage following circuit outputs the voltage sampling signal processed by filtering. According to the technical scheme, the filtering effect is improved and the detection precision is improved.

Description

technical field [0001] The invention relates to the technical field of electronic circuits, in particular to a sampling circuit and a detection device using the sampling circuit. Background technique [0002] During the flight, the aircraft needs to know the remaining fuel in the aircraft fuel tank at any time to ensure the safe flight of the aircraft. [0003] Usually, there is a fuel sensor in the fuel tank of the aircraft, which is used to detect the fuel level and convert it into an analog voltage signal. After filtering, it is output to the controller for processing, and then output to a display device to display the current remaining fuel. [0004] The existing filtering and sampling circuits usually have poor filtering effect, and it is difficult to meet the high-precision requirements for the detection of the oil level of the aircraft. SUMMARY OF THE INVENTION [0005] The main purpose of the present invention is to propose a sampling circuit, which aims to improv...

Claims

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Application Information

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IPC IPC(8): G01F23/26
CPCG01F23/266
Inventor 陈鲲叶标良李海丽
Owner AVIC NANHANG SHENZHEN MEASUREMENT & CONTROL TECH
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