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Subsection type liquid level measuring module

A liquid level measurement, segmented technology, applied in the liquid level indicator of physical variable measurement, etc., can solve the problems that affect the accuracy of the measurement results, affect the service life of the sensor, and are prone to failure, so as to achieve accurate and reliable measurement results , low power consumption, strong anti-interference effect

Active Publication Date: 2012-08-08
科博达重庆汽车电子有限公司 +2
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0002] At present, the traditional liquid level sensors are all wound or thick film type, which are greatly affected by the liquid dielectric and external environment interference, and the stability is relatively poor during measurement, thus affecting the accuracy of the measurement results
In addition, because most of the existing vehicle liquid level sensors obtain the oil level signal by converting the oil level position into the resistance change of the resistance array through the float ball, crank lever and row rod, the float ball, crank lever and row rod have been in a long-term state. In the state of motion, it is easy to break down, which will affect the service life of the sensor

Method used

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  • Subsection type liquid level measuring module

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Embodiment Construction

[0015] The present invention will be further described below in conjunction with the accompanying drawings.

[0016] refer to figure 1 , according to an embodiment of the present invention, the segmented liquid level measurement module includes a probe positioning seat 1 , a plurality of probes 2 , a main control circuit 3 , a power circuit 4 and a display module 5 . A plurality of detection heads means that the number of detection heads is at least two.

[0017] combine Figure 4 As shown, a plurality of probes 2 are arranged on the probe positioning seat 1 from top to bottom. The probe head is packaged with insulating and heat-conducting solid glue, which can dissipate heat through the heat-conducting solid glue and prevent liquids with strong dielectrics from conducting electricity. exist Figure 4 Six probes are shown in , which is only used as an example, and the number of probes can be changed according to the needs of actual detection.

[0018] Each probe 2 include...

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Abstract

The invention discloses a subsection type liquid level measuring module, comprising a probe positioning base, a plurality of probes, a main control circuit and a power supply circuit, wherein the probes are arranged on the probe positioning base from top to bottom; each probe comprises a heating element and a temperature detecting circuit; each heating element is electrically connected with a first control output end of the main control circuit; a control input end of each temperature detecting circuit is electrically connected with a second control output end of the main control circuit; a signal output end of each temperature detecting circuit is electrically connected with a signal input end of the main control circuit so that a temperature detecting feedback signal is output to the main control circuit; and the main control circuit is used for obtaining a liquid level detecting result according to a difference value between the temperature detecting feedback signal before heating and the temperature detecting feedback signal after heating of each probe. The subsection type liquid level measuring module provided by the invention is not influenced by a liquid dielectric and an external environment and is more accurate and reliable in a measuring result.

Description

technical field [0001] The invention relates to liquid level detection technology, in particular to a liquid level measurement module. Background technique [0002] At present, the traditional liquid level sensors are all wound or thick film type, which are greatly affected by the liquid dielectric and external environment interference, and the stability is relatively poor during measurement, thus affecting the accuracy of the measurement results. In addition, because most of the existing vehicle liquid level sensors obtain the oil level signal by converting the oil level position into the resistance change of the resistance array through the float ball, crank lever and row rod, the float ball, crank lever and row rod have been in a long-term state. In the state of motion, it is easy to break down, which will affect the service life of the sensor. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a segmented liqui...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01F23/22
Inventor 胡智武万鹏
Owner 科博达重庆汽车电子有限公司
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