Magnetic drive type liquid level detecting device

A technology of liquid level detection and magnetic drive, which is applied in the field of detection, can solve problems such as corrosion of resistors and sliders, measurement failure, and impact on measurement, and achieve the effects of improving measurement accuracy, avoiding corrosion and pollution, and improving accuracy

Inactive Publication Date: 2016-07-06
GUANGDONG UNIV OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, the traditional automotive oil level sensing detection is generally through the mechanical connection between the oil float and the sliding wire rheostat. The position of the oil float changes, driving the sliding contact to slide on the sliding wire rheostat, thereby changing the resistance of the rheostat. The oil volume of the f

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  • Magnetic drive type liquid level detecting device
  • Magnetic drive type liquid level detecting device
  • Magnetic drive type liquid level detecting device

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Embodiment Construction

[0022] Embodiments of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0023] Such as Figure 1 to Figure 3 As shown, the magnetically driven liquid level detection device includes a power supply, a resistance transmitter and a single-chip microcomputer connected to the power supply, and also includes a casing 12. The power supply, the transmitter and the single-chip microcomputer are all installed in the casing 12, and the power supply, transformer Transmitter and single-chip microcomputer are existing conventional technology and are installed in casing 12, therefore not shown in the figure, resistance transmitter (not shown in the figure) is connected with the varistor 3 that is placed in the airtight cavity by lead 10, Wherein, the airtight cavity includes a bottom plate 2 and a cover plate 1 that is engaged with the bottom plate 2 to form an airtight cavity. The bottom plate 2 includes a first partition 21, a ...

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Abstract

The invention discloses a magnetic drive type liquid level detecting device which comprises a power supply, and a resistance converter and a single-chip microcomputer which are connected with the power supply. The resistance converter is connected with a rheostat in a sealed cavity. The sealed cavity comprises a bottom plate and a cover plate, wherein the cover plate is clamped on the bottom plate and matched with the bottom plate to form the sealed cavity. The rheostat comprises a resistance sheet, a first magnet, a second magnet and a swing rod fixedly connected with the second magnet. The tail end of the swing rod is connected with a floating ball. The first magnet is adopted as a slide contact of the resistance sheet, the access resistance of the resistance sheet is changed through the magnetic force drive of the second magnet on the first magnet, all rheostat components are sealed in the sealed cavity composed of the cover plate and the bottom plate, the corrosion and contamination of fuel oil are completely avoided, the liquid level detection precision is improved, the corrosion caused when mechanically rotating metal slide sheets rub the resistance sheet multiple times is avoided, the measurement precision is further improved, and the service life of the whole device is prolonged.

Description

technical field [0001] The invention relates to the detection field, in particular to a magnetic force-driven liquid level detection device. Background technique [0002] At present, the traditional automotive oil level sensing detection is generally through the mechanical connection between the oil float and the sliding wire rheostat. The position of the oil float changes, driving the sliding contact to slide on the sliding wire rheostat, thereby changing the resistance of the rheostat. The oil volume of the fuel tank is determined by the resistance value, but the resistor and slider are directly immersed in the fuel. Due to the mechanical contact between the contact and the rheostat diaphragm, long-term immersion in fuel will corrode the resistor and slider, resulting in a decrease in accuracy. , and even the measurement fails, thus affecting the measurement. Contents of the invention [0003] The task of the present invention is to provide a magnetically driven liquid ...

Claims

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Application Information

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IPC IPC(8): G01F23/36
CPCG01F23/363
Inventor 王梁武杨杰别亮亮刘攀李蓉
Owner GUANGDONG UNIV OF TECH
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