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A particle counting system and its application, method for detecting metal ions and particles

A particle and counting module technology, which is applied in particle and sedimentation analysis, measuring devices, particle size analysis, etc., can solve the problems of low detection accuracy and long time consumption, and achieve the effect of improving measurement accuracy and shortening measurement time

Active Publication Date: 2021-02-02
RESUN (SHENZHEN) TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to overcome the defects of low detection accuracy and long time-consuming in the existing particle counting technology, and provide a particle counting device and control method with high detection accuracy and short time-consuming

Method used

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  • A particle counting system and its application, method for detecting metal ions and particles
  • A particle counting system and its application, method for detecting metal ions and particles
  • A particle counting system and its application, method for detecting metal ions and particles

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0051] The circuit system 1 of the particle counting system uses a computer as the control center, and uses a PCI expansion card to realize the control of the liquid path drive module 2 and the control and data collection of the particle counting module 3 . The liquid drive module 2 is a liquid pump, which draws the sample through the Teflon tube and transports it to the particle counting module 3, and at the same time provides the pressure required to drive the sample through the particle counting module 3. After the sample comes out of the particle counting module 3, it passes through the The Teflon tubing returns to the sample.

[0052] Particle counting module 3 is mainly composed of two cavities processed by acrylic materials and a ruby ​​sheet with 10um micro-nano holes. There is a through hole slightly smaller than the ruby ​​sheet on one side of the cavity, and the ruby ​​sheet is placed in the through hole. Sandwiched in the middle, the ruby ​​is airtightly connected ...

Embodiment 2

[0055] The circuit system 1 of the particle counting system uses STM32F4 series MCU as the control center, and the GPIO pin of the MCU uses a Darlington switch tube to realize the control of the liquid circuit drive module 2 and the control of the particle counting module 3. The SPI interface of the MCU is used for in data collection. The 8 current signals from the measurement tank electrodes of the particle counting module 3 are sent to the AD7927 chip after I / V conversion, filtering and amplification, and the SPI interface of the MCU is connected to the AD7927 for reading current signals.

[0056] The liquid circuit driving module 2 is a section of Teflon tube, which is connected to the domestic tap water pipe, and the water sample is extracted and sent to the particle counting module 3, and the water pressure of the tap water is used as the required pressure for passing through the particle counting module 3. Water pressure, the water sample flows to the outside after comin...

Embodiment 3

[0060] The determination of the mercury ion content in the water sample can be detected in this way. First, the water sample to be tested is filtered with a filter device.

[0061] This filtering device consists of two grooves, and there is a separation membrane between the two grooves. There are many micro-nanopores with a diameter of 1nm on the membrane, and the two grooves are only connected through the micro-nanopores. The liquid to be tested passes through the separation membrane, which filters out large particles.

[0062] Add the terpyridine amino acid to the filtered water sample, and then measure the water sample with the particle counting module described in Example 2, except that the micro-nanopore in the particle counting module adopts a pore size of 10nm at this time. The mercury ion content in the water sample can be analyzed by counting the amount of water in the module and the number of characteristic current transformations of the mercury ion complex.

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Abstract

A particle counting system, including a circuit system, a hydraulic drive module and a particle counting module, the liquid drive module draws water samples and transports them to the particle counting module, the particle counting module counts the samples, and the circuit system controls the liquid drive module and the particle counting The normal operation of the module; the particle counting module includes an inflow slot and an outflow slot, and a micro-nano hole is opened between the in-flow slot and the outflow slot. The diameter of the micro-nano hole is between 100um and 0.1nm. The water on the side is only connected through the micro-nano holes, the inflow tank electrode is provided in the inflow tank, and the outflow tank electrode is provided in the outflow tank. The particle counting device and control method of the present invention have high detection accuracy and short time consumption.

Description

technical field [0001] The invention relates to a system for particle counting, which can be used for on-line detection of water quality, experimental quantitative measurement and analysis of particles in liquid, and application of blood cell analysis. Background technique [0002] In recent years, water quality has become a hot spot of concern. In the fields of bacteria, PM2.5, other impurity particles contained in water, and blood cell analysis, with the current technical level, the detection accuracy is low and it takes a long time. Contents of the invention [0003] The technical problem to be solved by the present invention is to overcome the defects of low detection accuracy and long time-consuming in the existing particle counting technology, and provide a particle counting device and control method with high detection accuracy and short time-consuming. [0004] In order to solve the above technical problems, the present invention proposes the following technical so...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N15/02
CPCG01N15/0266
Inventor 柳可
Owner RESUN (SHENZHEN) TECH CO LTD
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