CN100451902C - Automatic regulation control system for PH value of solution and its automatic control method - Google Patents
Automatic regulation control system for PH value of solution and its automatic control method Download PDFInfo
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- CN100451902C CN100451902C CNB2004100438120A CN200410043812A CN100451902C CN 100451902 C CN100451902 C CN 100451902C CN B2004100438120 A CNB2004100438120 A CN B2004100438120A CN 200410043812 A CN200410043812 A CN 200410043812A CN 100451902 C CN100451902 C CN 100451902C
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Abstract
The present invention relates to an automatic adjusting and controlling system for the pH value of a solution and an automatic control method thereof. The output end of (1) is connected with the input end of (5), (6), and the output end of (2) is connected with the input end of (6) through (3), (4); the output ends of (6), (8), (9) are respectively connected with the three input ends of (7), and the output end of (7) is connected with the input end of (10); the output end of (10) is connected with the input end of (11), and the output end of (10) is connected with the input end of (12). The control method comprises: a start (001), initialization (002), CPU open interruption (003), the state (004) of the measurement and the control of the pH value, the subprogram (005) of the measurement and the control of the pH value, the subprogram (006) of the measurement and the control of a temperature value, display (007), the coverage (008) of the nth measuring value on the (n-1)th measuring value, measuring value storage (009), the state of the control (010), the state (011)of pH control, on-state control setting (012) of a heater, on-state setting (013) of a liquid filling pump and an end (014). The present invention can monitor and automatically adjust the pH value and the temperature value of the solution in real time.
Description
Technical field:
The present invention relates to controlled system with self-regulation, specifically is a kind of pH value of solution value controlled system with self-regulation and autocontrol method thereof.
Background technology:
Existing chemical reaction often need carry out in a specific pH value scope, the pH value of liquid-phase reaction system do not detected at present, and the while instrument or the device that automatically adjust again, control.Commercially available acidometer (also claiming pH meter) can only detect the pH value of liquid-phase system, but it can not automatically adjust to the pH value of the system of continuous adding reaction solution and control, and does not more have the ability of for a long time the pH value of open system being regulated, being controlled.Equivalent point when commercially available potentiometric titrimeter can only be judged acid with the mutual titration of alkali, it can not automatically adjust to the pH value of liquid phase systems and control.
Summary of the invention:
The purpose of this invention is to provide a kind of pH value of solution value controlled system with self-regulation and autocontrol method thereof.The present invention can monitor and pH value and the temperature value of adjusting solution automatically in real time to the pH value and the temperature value of solution.The present invention is made up of thermocouple sensor 1, pH value sensor 2, first operational amplification circuit 3, automatic range commutation circuit 4, second operational amplification circuit 5, mould/number conversion circuit 6, micro-computer circuit 7, keyboard circuit 8, display circuit 9, interface control circuit 10, fluid filling pump 11, well heater 12; The signal output part of thermocouple sensor 1 connects the signal input part of second operational amplification circuit 5, an input end of analog signal of the signal output part connection mode/number conversion circuit 6 of second operational amplification circuit 5, the signal output part of pH value sensor 2 connects the signal input part of first operational amplification circuit 3, the signal output part of first operational amplification circuit 3 connects the signal input part of automatic range commutation circuit 4, another input end of analog signal of the signal output part connection mode/number conversion circuit 6 of automatic range commutation circuit 4, the data output end of mould/number conversion circuit 6 connects the data input pin of micro-computer circuit 7, micro-computer circuit 7 video data output terminals connect the data input pin of display circuit 9, the data I/O of micro-computer circuit 7 connects the data input/output terminal of keyboard circuit 8, the data input pin of the data output end connecting interface control circuit 10 of micro-computer circuit 7, a control output end of interface control circuit 10 connects the control input end of fluid filling pump 11, and another control output end of interface control circuit 10 connects the control input end of well heater 12; The step of this invention autocontrol method is: beginning 001; Initialization 002; CPU opens and interrupts 003, and CPU opens interruption and jumps into keyboard interrupt subroutine 031 after by the keyboard triggering for generating; Judge whether observing and controlling pH value 004, being judged as is then to move pH value observing and controlling subroutine 005; Send and show 007; The step of above-mentioned whether observing and controlling pH value 004 is judged as not, and then running temperature value observing and controlling subroutine 006; Send and show 007; N measured value covered n-1 measured value 008; Preserve measured value 009; Judge and whether control 010 that be judged as not, then end of run 014; Be judged as and be, then operation judges that pH whether control 011, is judged as not, then moves to put the well heater state of a control and open 012; Finish 014; Whether above-mentioned pH controls that 011 step is judged as is that then operation is put the fluid filling pump state and opened 013; Finish 014; The step of pH value observing and controlling subroutine 005 is (as Fig. 4): to pH value sampling 051; To full five times 052 of pH value sampling, be judged as not, then return operation to pH value sampling 051; Be judged as is that then operation is removed extreme value and averaged 053; The result that this removal extreme value is averaged subtracts the mean value of preceding four measurement results, ask absolute value smaller or equal to 0.05 again? 054, being judged as is that then whether operation controls 055; Operation whether control 055 and is not judged as not, then returns operation to pH value sampling 051, and whether operation controls 055, and to be judged as be then to move and put fluid filling pump state pass 056; Return again pH value sampling 051; The result that above-mentioned this removal extreme value is averaged subtracts the mean value of preceding four measurement results, ask absolute value less than 0.05 again? 054, be judged as not, then operation is sent and is shown 007.The present invention can monitor and auto-control the pH value and the temperature value of solution in open system or the closed system for a long time in real time, have high stability, high precision, inspection/control point accurately, the advantage of pH value of solution value high conformity, the observing and controlling scope of its pH value of solution value is 1＜pH＜13, precision is ± 0.05, and the measurement and control of temperature scope is 20 a ℃≤T value≤70 ℃.
Description of drawings:
Fig. 1 is an integrated circuit structural representation of the present invention, Fig. 2 is the step block diagram of autocontrol method of the present invention, Fig. 3 is the step block diagram of keyboard interrupt subroutine 031, and Fig. 4 is the step block diagram of pH value observing and controlling subroutine 005, and Fig. 5 is the step block diagram of temperature value observing and controlling subroutine 006.
Embodiment:
In conjunction with Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5 present embodiment is described, present embodiment is made up of thermocouple sensor 1, pH value sensor 2, first operational amplification circuit 3, automatic range commutation circuit 4, second operational amplification circuit 5, mould/number conversion circuit 6, micro-computer circuit 7, keyboard circuit 8, display circuit 9, interface control circuit 10, fluid filling pump 11, well heater 12; The signal output part of thermocouple sensor 1 connects the signal input part of second operational amplification circuit 5, an input end of analog signal of the signal output part connection mode/number conversion circuit 6 of second operational amplification circuit 5, the signal output part of pH value sensor 2 connects the signal input part of first operational amplification circuit 3, the signal output part of first operational amplification circuit 3 connects the signal input part of automatic range commutation circuit 4, another input end of analog signal of the signal output part connection mode/number conversion circuit 6 of automatic range commutation circuit 4, the data output end of mould/number conversion circuit 6 connects the data input pin of micro-computer circuit 7, micro-computer circuit 7 video data output terminals connect the data input pin of display circuit 9, the data I/O of micro-computer circuit 7 connects the data input/output terminal of keyboard circuit 8, the data input pin of the data output end connecting interface control circuit 10 of micro-computer circuit 7, a control output end of interface control circuit 10 connects the control input end of fluid filling pump 11, and another control output end of interface control circuit 10 connects the control input end of well heater 12; The step of this invention autocontrol method is: beginning 001; Initialization 002; CPU opens and interrupts 003, and CPU opens interruption and jumps into keyboard interrupt subroutine 031 after by the keyboard triggering for generating; Judge whether observing and controlling pH value 004, being judged as is then to move pH value observing and controlling subroutine 005; Send and show 007; Whether observing and controlling pH value is judged as not above-mentioned 004 step, and then running temperature value observing and controlling subroutine 006; Send and show 007; N measured value covered n-1 measured value 008; Preserve measured value 009; Judge and whether control 010 that be judged as not, then end of run 014; Be judged as and be, then operation judges that pH whether control 011, is judged as not, then moves to put the well heater state of a control and open 012; Finish 014; Whether above-mentioned 011 step pH controls to be judged as and is, then operation is put the fluid filling pump state and opened 013; Finish 014.The step of described keyboard interrupt subroutine 031 is (as Fig. 3): function key 032, be judged as not, and then operation returns 037; Be judged as is that then whether operation controls 033; Be judged as not, then operation returns 037; Be judged as is then to move pH and whether control 034; Be judged as not, then move preset temperature value 036; Go to return 037; Whether above-mentioned 034 step pH controls to be judged as and is, then the default pH value 035 of operation; Go to return 037; The step of described pH value observing and controlling subroutine 005 is (as Fig. 4): to pH value sampling 051; To full five times 052 of pH value sampling, be judged as not, then return operation to pH value sampling 051; Be judged as is that then operation is removed extreme value and averaged 053; This time measurement result subtracts the mean value of preceding four measurement results, ask absolute value smaller or equal to 0.05 again? 054, being judged as is that then whether operation controls 055; Operation whether control 055 and is not judged as not, then returns operation to pH value sampling 051, and whether operation controls 055, and to be judged as be then to move and put fluid filling pump state pass 056; Return again pH value sampling 051; This time of above-mentioned steps measurement result subtracts the mean value of preceding four measurement results, ask absolute value smaller or equal to 0.05 again? 054, be judged as not, then operation is sent and is shown 007; The step of described temperature value observing and controlling subroutine 006 is (as Fig. 5): to temperature value sampling 061; To full five times 062 of temperature value sampling, be judged as not, then return operation to temperature value sampling 061; Be judged as is that then operation is removed extreme value and averaged 063; This time measurement result subtracts the mean value of preceding four measurement results, ask absolute value smaller or equal to 0.5 again? 064, being judged as is that then whether operation controls 065; Operation whether control 065 and is not judged as not, then returns operation to temperature value sampling 061, and operation whether control 065, and to be judged as be then to move and put heater status pass 066; Return again temperature value sampling 061; This time of above-mentioned steps measurement result subtracts the mean value of preceding four measurement results, ask absolute value smaller or equal to 0.5 again? 064, be judged as not, then operation is sent and is shown 007.The model that first operational amplification circuit 3 is selected for use is LM308, the model that automatic range commutation circuit 4 is selected for use is LM308, MOC3063, the model that second operational amplification circuit 5 is selected for use is AD620, the model that mould/number conversion circuit 6 is selected for use is ADC0809, the model that micro-computer circuit 7 is selected for use is AT89C55, and the model that display circuit 9 is selected for use is 74LS164.
Claims (3)
1. pH value of solution value controlled system with self-regulation is characterized in that it is made up of thermocouple sensor (1), pH value sensor (2), first operational amplification circuit (3), automatic range commutation circuit (4), second operational amplification circuit (5), mould/number conversion circuit (6), micro-computer circuit (7), keyboard circuit (8), display circuit (9), interface control circuit (10), fluid filling pump (11), well heater (12); The signal output part of thermocouple sensor (1) connects the signal input part of second operational amplification circuit (5), an input end of analog signal of the signal output part connection mode of second operational amplification circuit (5)/number conversion circuit (6), the signal output part of pH value sensor (2) connects the signal input part of first operational amplification circuit (3), the signal output part of first operational amplification circuit (3) connects the signal input part of automatic range commutation circuit (4), another input end of analog signal of the signal output part connection mode of automatic range commutation circuit (4)/number conversion circuit (6), the data output end of mould/number conversion circuit (6) connects the data input pin of micro-computer circuit (7), micro-computer circuit (7) video data output terminal connects the data input pin of display circuit (9), the data I/O of micro-computer circuit (7) connects the data input/output terminal of keyboard circuit (8), the data input pin of the data output end connecting interface control circuit (10) of micro-computer circuit (7), a control output end of interface control circuit (10) connects the control input end of fluid filling pump (11), and another control output end of interface control circuit (10) connects the control input end of well heater (12).
2. the autocontrol method of pH value of solution value controlled system with self-regulation the steps include: beginning (001); Initialization (002); CPU opens interruption (003), and CPU opens interruption and jumps into keyboard interrupt subroutine (031) after by the keyboard triggering for generating; Judge whether observing and controlling pH value (004), being judged as is then to move pH value observing and controlling subroutine (005); Send demonstration (007); The step of above-mentioned whether observing and controlling pH value (004) is judged as not, then running temperature value observing and controlling subroutine (006); Send demonstration (007); N measured value covered n-1 measured value (008); Preserve measured value (009); Judge and whether control (010), be judged as not, then end of run (014); Be judged as and be, then operation judges that pH whether control (011), is judged as not, then moves to put the well heater state of a control and open (012); Finish (014); The step whether above-mentioned pH controls (011) is judged as and is, then operation is put the fluid filling pump state and opened (013); Finish (014), it is characterized in that the step of pH value observing and controlling subroutine (005) is: to pH value sampling (051); To pH value sampling full five times (052), be judged as not, then return operation to pH value sampling (051); Be judged as and be, then extreme value average (053) is removed in operation; The result that this removal extreme value is averaged subtracts the mean value of preceding four measurement results, ask absolute value smaller or equal to 0.05 again? (054), being judged as is that then whether operation controls (055); Operation whether control (055) and is not judged as not, then returns operation to pH value sampling (051), and whether operation controls that (055) be judged as is then to move and put fluid filling pump state pass (056); Return again pH value sampling (051); The result that above-mentioned this removal extreme value is averaged subtracts the mean value of preceding four measurement results, ask absolute value less than 0.05 again? (054), be judged as not, then demonstration (007) is sent in operation.
3. the autocontrol method of pH value of solution value controlled system with self-regulation according to claim 2 is characterized in that the step of temperature value observing and controlling subroutine (006) is: to temperature value sampling (061); To temperature value sampling full five times (062), be judged as not, then return operation to temperature value sampling (061); Be judged as and be, then extreme value average (063) is removed in operation; The result that this removal extreme value is averaged subtracts the mean value of preceding four measurement results, ask absolute value smaller or equal to 0.5 again? (064), being judged as is that then whether operation controls (065); Operation whether control (065) and is not judged as not, then returns operation to temperature value sampling (061), and it is then to move and put heater status pass (066) that operation whether control that (065) be judged as; Return again temperature value sampling (061); The result that above-mentioned this removal extreme value is averaged subtracts the mean value of preceding four measurement results, ask absolute value less than 0.5 again? (064), be judged as not, then demonstration (007) is sent in operation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100438120A CN100451902C (en) | 2004-08-18 | 2004-08-18 | Automatic regulation control system for PH value of solution and its automatic control method |
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| Application Number | Priority Date | Filing Date | Title |
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| CNB2004100438120A CN100451902C (en) | 2004-08-18 | 2004-08-18 | Automatic regulation control system for PH value of solution and its automatic control method |
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| CN1598729A CN1598729A (en) | 2005-03-23 |
| CN100451902C true CN100451902C (en) | 2009-01-14 |
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| CNB2004100438120A Expired - Fee Related CN100451902C (en) | 2004-08-18 | 2004-08-18 | Automatic regulation control system for PH value of solution and its automatic control method |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101813949B (en) * | 2009-02-20 | 2012-09-05 | 厦门大学 | Electrochemical method for regulating pH value of solution in situ |
| CN102069089B (en) * | 2010-11-24 | 2012-02-01 | 哈尔滨工程大学 | Method for automatically treating high-concentration toxic organics in soil or water |
| CN104090597B (en) * | 2014-07-22 | 2016-04-13 | 长沙思辰仪器科技有限公司 | A kind of intelligent pH TT&C system and pH investigating method |
| CN106480471B (en) * | 2016-11-04 | 2018-05-22 | 柳州高新区欧亚自动化设备有限责任公司 | EMD Continuous leaching process chemical combination slot pH value control devices and its control method |
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Assignee: Zhaoqing Beryl Electronic Co., Ltd. Assignor: Harbin Institute of Technology Contract record no.: 2010440001159 Denomination of invention: Automatic regulation control system for PH value of solution and its automatic control method Granted publication date: 20090114 License type: Exclusive License Open date: 20050323 Record date: 20100816 |
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