Automatic regulation control system for PH value of solution and its automatic control method

An automatic adjustment and control system technology, applied in the direction of control/regulation system, non-electric variable control, ratio control, etc., can solve the problem of automatic adjustment and control of pH value, no pH value adjustment, control, and pH value of liquid phase system Issues such as automatic regulation and control

Inactive Publication Date: 2005-03-23
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

A commercially available acidity meter (also known as a pH meter) can only detect the pH value of the liquid phase system, but it cannot automatically adjust and control the pH value of the system that continuously adds the reaction solution, let alone adjust the pH value of the open system for a long time. Ability to regulate and control
The commercially available potentiometric titrator can only judge the equivalence point when acid and alkali are titrated with each other, and it cannot automatically adjust and control the pH value of the liquid phase system

Method used

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  • Automatic regulation control system for PH value of solution and its automatic control method
  • Automatic regulation control system for PH value of solution and its automatic control method
  • Automatic regulation control system for PH value of solution and its automatic control method

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Embodiment Construction

[0005] combine figure 1 ,figure 2, image 3 , Figure 4 , Figure 5 Describe this embodiment, this embodiment is made up of thermocouple sensor 1, pH value sensor 2, first operational amplifier circuit 3, automatic range switching circuit 4, second operational amplifier circuit 5, analog / digital conversion circuit 6, microcomputer circuit 7 , a keyboard circuit 8, a display circuit 9, an interface control circuit 10, a liquid filling pump 11, and a heater 12; The signal output end of the pH value sensor 2 is connected to an analog signal input end of the analog / digital conversion circuit 6, the signal output end of the pH value sensor 2 is connected to the signal input end of the first operational amplifier circuit 3, and the signal output end of the first operational amplifier circuit 3 is connected to the automatic The signal input end of the range switching circuit 4, the signal output end of the automatic range switching circuit 4 is connected to another analog signal i...

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Abstract

The invention discloses an automatic regulating control system and control method of pH value of solution. The output end of (1) is connected to the input end of (6) with (5), the output end of (2) is connected to the input end of (6) with (3) and (4), the output ends of (6), (8), (9) are connected to the three input ends of (7), the output end of (7) is connected to the input end of (10), the output end of (10) is connected to the input end of (11), the output end of (10) is connected to the input end of (12). The controlling method is: start (001), initiate (002), open interrupt of CPU (003), whether test pH value (004), pH value observe and control subprogram (005), temperature value observe and control subprogram (006), display (007), the (n-1) testing value is covered by the n value (008), store testing value (009), whether be controlled (010), whether the pH value is controlled (011), open heating controlling status (012), open makeshift-up pump status (013), end (014). The invention can monitor timely the pH value and temperature and regulate automatically.

Description

Technical field: [0001] The invention relates to an automatic adjustment control system, in particular to an automatic adjustment control system for the pH value of a solution and an automatic control method thereof. Background technique: [0002] Existing chemical reactions often need to be carried out within a specific pH value range. Currently, there is no instrument or device that detects the pH value of the liquid phase reaction system and performs automatic adjustment and control at the same time. A commercially available acidity meter (also known as a pH meter) can only detect the pH value of the liquid phase system, but it cannot automatically adjust and control the pH value of the system that continuously adds the reaction solution, let alone adjust the pH value of the open system for a long time. Ability to regulate and control. The commercially available potentiometric titrator can only judge the equivalence point when acid and alkali are titrated with each other...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05D21/00
Inventor 顾大明张继梅高农
Owner HARBIN INST OF TECH
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