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Transparent tube liquid monitoring device and method capable of preventing misjudgment

A technology for monitoring devices and transparent tubes, which can be used in transmittance measurement, optical device exploration, etc., can solve the problems of easy misjudgment, and achieve the effects of low cost, improved judgment accuracy, and simple use

Pending Publication Date: 2020-05-29
CHANGAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The object of the present invention is to provide a transparent tube liquid monitoring device and method that can prevent misjudgment, which solves the problem of easy misjudgment in the method for monitoring whether there is liquid in the transparent tube in the prior art

Method used

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  • Transparent tube liquid monitoring device and method capable of preventing misjudgment
  • Transparent tube liquid monitoring device and method capable of preventing misjudgment

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Embodiment Construction

[0027] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0028] like figure 1 As shown, the present invention provides a transparent tube liquid monitoring device that can prevent misjudgment, including LED light source 1, transparent infusion tube 2, photoelectric sensor 3, signal modulation and amplification circuit module 4, ADC and back-end processor module 5 , wherein, the LED light source 1 is used to provide a light source to the transparent infusion tube 2; the photoelectric sensor 3 is used to collect the light intensity signal of the transparent infusion tube 2, convert the collected light intensity signal into a current signal, and transmit the current signal to The signal modulation and amplification circuit module 4; the signal modulation and amplification circuit module 4 is used to convert the current signal into a voltage signal, which is amplified by the amplification circuit, and then the amplifie...

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Abstract

The invention provides a transparent tube liquid monitoring device and method capable of preventing misjudgment, and the device comprises an LED light source, a transparent infusion tube, a photoelectric sensor, a signal modulation and amplification circuit module, an ADC and rear-end processor module. The LED light source is used for providing a light source for the transparent infusion tube; thephotoelectric sensor is used for acquiring a light intensity signal of the transparent infusion tube, converting the acquired light intensity signal into a current signal and transmitting the currentsignal to the signal modulation and amplification circuit module; the signal modulation and amplification circuit module is used for converting the current signal into a voltage signal, amplifying the voltage signal through an amplification circuit, and then transmitting the amplified signal to the ADC and rear-end processor module; the ADC and back-end processor module is used for converting thereceived voltage analog signal into a digital signal and carrying out back-end processing; and the initial threshold value is updated in real time such that the judgment accuracy is improved.

Description

technical field [0001] The invention belongs to the field of automatic monitoring of the presence or absence of liquid in a pipeline, and in particular relates to a liquid monitoring device and method for a transparent tube which can prevent misjudgment. Background technique [0002] In the field of instrumentation automation, there are more and more demands for judging whether there is liquid flowing in the transparent pipe. For example, in 2018, the "Technical Requirements and Detection Methods for Chemical Oxygen Demand (CODCr) Online Automatic Water Quality Monitor (Draft for Comment)" issued by the Ministry of Ecology and Environment of the People's Republic of China clearly stated: "The automatic water quality monitor should have abnormal information. Record, upload and feedback functions, such as: lack of reagent alarm, component failure alarm, liquid leakage alarm, sampling failure alarm and over-standard alarm, etc.” Another example, the infusion alarm used in the m...

Claims

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Application Information

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IPC IPC(8): G01N21/59G01V8/12
CPCG01N21/59G01V8/12
Inventor 曲鑫屈八一冯兴乐张磊俞东松
Owner CHANGAN UNIV
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