System for online control of concentration of chemical solution, and method thereof

A chemical solution, concentration technology, applied in electrical program control, program control in sequence/logic controller, color/spectral characteristic measurement, etc., can solve the problem of not guaranteeing the accuracy of adding liquid medicine, affecting product quality, and increasing product rework rate and other problems, to achieve the effect of reducing product preparation cost, reducing product rework rate, and ensuring concentration accuracy.

Inactive Publication Date: 2013-07-24
KUTTLER AUTOMATION SYST SUZHOU
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Problems solved by technology

[0004] However, with the improvement of product quality requirements, the accuracy of the chemical solution concentration is also increased accordingly, which also requires accurate addition of chemical solution concentration. The method of adding chemical solution in the prior art cannot guarantee the accuracy of adding chemical solution, and it is difficult to accurately add the chemical solution online. Controlling the concentration of chemical solutions affects product quality and increases the rework rate of products

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  • System for online control of concentration of chemical solution, and method thereof
  • System for online control of concentration of chemical solution, and method thereof

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[0032] The following introduces some of the possible embodiments of the present invention, which are intended to provide a basic understanding of the present invention, but are not intended to identify key or decisive elements of the present invention or limit the scope of protection. It is easy to understand that, according to the technical solution of the present invention, those skilled in the art may propose other alternative implementation manners without changing the essence and spirit of the present invention. Therefore, the following specific embodiments and drawings are only exemplary descriptions of the technical solution of the present invention, and should not be regarded as the entirety of the present invention or as a limitation or restriction on the technical solution of the present invention.

[0033] Fig. 1 shows an online control system for chemical solution concentration according to an embodiment of the present invention. In this embodiment, the chemical so...

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Abstract

The invention provides a system for the online control of the concentration of a chemical solution, and a method thereof, and belongs to the technical field of chemical solution monitoring analysis. The system comprises a near infrared grating spectrograph used for the online acquisition of the spectral data of the chemical solution, a concentration test device used for analyzing the spectral data to obtain the concentration data of the chemical solution, an analysis device used for the calibration and calculation of the concentration data to output a control signal of the quantitative addition of a soup, and a soup adding device. The chemical solution concentration online control precision of the system is high, and products prepared through a wet technology adopting the system and the method have a high quality and a low rework rate.

Description

technical field [0001] The invention belongs to the technical field of chemical solution monitoring and analysis, and relates to an online control system for chemical solution concentration and an online control method for chemical solution concentration. Background technique [0002] In the field of photovoltaic (PV) technology, it is usually necessary to perform various wet processes on the solar cell substrate, for example, wet etching to remove edges and the like. Likewise, in the field of printed circuit board (PCB) technology, there are also multi-step wet processes. In the wet process, it is necessary to use various chemical solutions with corresponding components and concentration values. The accuracy of the concentration of the chemical solution will directly affect the quality of the product and the rework rate. Therefore, the concentration of the chemical solution must be well controlled to improve the quality of the product. [0003] Usually, in the wet...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/35G05B19/05
Inventor 梁建范琼
Owner KUTTLER AUTOMATION SYST SUZHOU
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