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Liquid level sensor device

A technology of liquid level detection and liquid level, which is applied in the direction of power plant, loading system, transportation and packaging, etc., and can solve the problems of magnetic sensor temperature characteristics and sensitivity inconsistency

Inactive Publication Date: 2004-10-27
NIPPON SEIKI CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, such a liquid level detection device using a magnetic sensor adopts the following scheme, wherein, in one magnetic circuit, one magnetic sensor is arranged, and the change of the magnetic field in the magnetic circuit is detected. Danger of inconsistencies in sensitivity

Method used

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Embodiment Construction

[0014] The following is based on figure 1 ~ Fig. 3, describe the first embodiment of the present invention. The liquid level detection device 1 of the present embodiment is installed inside the fuel tank 2 of the vehicle with the mounting member 3 closing the opening of the fuel tank 2 . A bracket 4 of the liquid level detection device 1 is provided on the mounting member 3 , and components constituting the liquid level detection device 1 are mounted on the bracket 4 .

[0015] The liquid level detection device 1 is composed of a float 5 floating on the liquid level of liquid fuel not shown in the figure stored inside the fuel tank 2; One end of the floating arm 6 is provided with the above-mentioned float 5, and the other end of the floating arm 6 is supported on the support 4 in a rotatable manner; the magnetic body 7 passes through the floating body 5 accompanying the change of the above-mentioned liquid level. Change and rotate; 2 magnetic sensors 8a, 8b, the 2 magnetic ...

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Abstract

A liquid level detecting apparatus in which an error due to a scatter of the temperature characteristics and sensitivity of magnetic sensors is held down is provided which has a float 5 floating on a liquid level, a magnetic member 7 adapted to be turned in accordance with variation of a position of the float 5 accompanied by the fluctuation of the liquid level, and magnetic sensors 8a, 8b adapted to output detection signals varying in accordance with a rotation of the magnetic member 7, the apparatus including two magnetic sensors 8a, 8b, a control unit 100 adapted to receive detection signals outputted from the two magnetic sensors 8a, 8b and compute a liquid quantity value on the basis of the detection signals, and a display unit 102 adapted to shown thereon a liquid level on the basis of the liquid quantity value computed by the control unit 100.

Description

technical field [0001] The present invention relates to a liquid level detection device that detects the liquid level of the liquid using a magnetic mechanism provided on a member that stores liquid such as a fuel tank of a vehicle or the like. Background technique [0002] In the past, as a liquid level detection device for detecting the liquid level of liquid fuel in vehicles, especially vehicles, there is known a type in which a float arm is connected to a float whose position changes according to the remaining amount of fuel. The position of the float (the liquid level of the fuel) is converted into a resistance value and detected by sliding the sliding contact that operates with the movement of the floating arm on the fixed contact that is in contact with the resistor. [0003] However, since the liquid level detection device described above operates with electrical contact between the sliding contact and the fixed contact, the liquid level detection device cannot be us...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60K15/077F02M37/00G01F23/36G01F23/38
CPCG01F23/36G01F23/38
Inventor 佐藤浩一
Owner NIPPON SEIKI CO LTD