CN2281535Y - Industrial pH monitoring and controlling device - Google Patents
Industrial pH monitoring and controlling device Download PDFInfo
- Publication number
- CN2281535Y CN2281535Y CN 96216243 CN96216243U CN2281535Y CN 2281535 Y CN2281535 Y CN 2281535Y CN 96216243 CN96216243 CN 96216243 CN 96216243 U CN96216243 U CN 96216243U CN 2281535 Y CN2281535 Y CN 2281535Y
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- microprocessor
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Abstract
The utility model relates to an industrial pH monitoring and controlling device. A microcomputer is adopted for control, and measured signals are input to a microprocessor through a sensor and a change-over circuit and then are respectively connected with a keyboard, a led display unit, a control executing unit, and a machine linking communication interface by a central controlling unit through interfaces. The control executing unit controls an alkali feeding pump and an acid feeding pump through a data driver and a relay circuit. As a result, the utility model has the characteristics of intelligence, multi-function, strong practicability, easy realization of total distributed control in factories, favorable working stability and consistency, high precision, reliable work, stable product quality, etc.
Description
The utility model relates to a kind of device of automatic monitoring system, especially a kind of online industrial pH value automatic monitoring controller that carries out.
The technological process of domestic industry production at present and the pH value Monitoring and Controlling of wastewater treatment also are in the state of more original backwardness, basically be to adopt the method for PH test paper and the comparison of standard test paper color to measure the pH value of former water, even employing apparatus measures, what majority used also is acidometer and the simple PH measuring instrument that lab analysis is used, the stability and the consistance of these instruments are relatively poor, precision is also low, and usually work discontinuously, and the adjusting of pH value only is a method of operating adding medicine by hand by rule of thumb, cause the waste of poor processing effect and medicament, product quality is difficult to stablize.
The purpose of this utility model is in order to overcome the deficiency of above-mentioned existence, and a kind of industrial pH value monitor controller that can monitor pH value in real time and control adding medicine automatically is provided.
The purpose of this utility model is finished by following technical solution, it includes sensing transducing unit, central control unit, keyboard and led display unit and control execution unit, the sensing transducing unit is made up of sensor and analog signal input circuit, sensor adopts GR glass combination electrode, and it is connected to microprocessor U in the central control unit by the analog signal input circuit of being made up of two groups of prime amplifiers
143 pin on.
Central control unit of the present utility model comprises the microprocessor U that is made of 8098 integrated chips
1, data memory, memory under program and clock circuit are at microprocessor U
1Output terminal on be connected to control execution unit, it comprises the programmable interface circuit of being made up of integrated chip 8155, data driver and relay circuit that integrated chip 245 is formed, relay circuit is to be in series by triode amplifier and relay J.
In above-mentioned control execution unit, on the data driver of forming by integrated chip 245, be connected with printer by output pin.
The utility model is connected to keyboard and led display unit behind central control unit, it comprises the light-emitting diode display of being made up of a plurality of charactrons, position segment driver and the keyboard that links to each other with 8279 control chips by three or eight code translators.
The company's of being connected to machine communication interface also on the microprocessor of the utility model in central control unit, its adopts integrated chip 1488 and 1489 and connect the level shifting circuit of composition, wherein 6 pin of 1489 chips insert on 1 pin of microprocessor 8098 chips, and 4,5 pin of 1488 chips are connected on 2 pin of 8089 chips.
Description of drawings is as follows:
Fig. 1 is that structure of the present utility model is formed block scheme.
Fig. 2 is the circuit theory diagrams of the utility model sensing transducing unit.
Fig. 3 is keyboard of the present utility model and led display unit circuit theory diagrams.
Fig. 4 is the circuit theory diagrams of control execution unit of the present utility model.
Fig. 5 is the circuit theory diagrams that connect the machine communication interface circuit of the present utility model.
The utility model is further introduced below by accompanying drawing; The utility model comprises sensing transducing unit 1, central control unit 2, and keyboard and led display unit 3, control execution unit 4 connects machine communication interface 5.Sensing transducing unit 1 is made up of sensor 6 and analog signal input circuit 7, and sensor 6 adopts GR glass combination electrode, and it is 2 LM411 operational amplifier L by analog signal input circuit 7
1, L
2Anodal input and through normal voltage comparer L
3Amplification output after be connected to microprocessor U
143 end pin on.Sensing transducing unit 1 of the present utility model is provided with 2 PH electrode input channels altogether.
Keyboard and led display unit 3, it comprises light-emitting diode display 14, keyboard special 15, and I10 interface 16.Light-emitting diode display 14 is by one group 4 0.8 inch, and one group 5 0.5 inch charactron is formed, and its signal is by 8279 integrated chip U
24 (pin 32-35 draws from end) sweep traces through 74LS154 integrated chip U
316 select one code translator generation, and through 540 and 2003 chip U
4, U
5Drive and select to light a certain charactron.And the segment signal of light-emitting diode display 14 is by 8279 integrated chip U
2Pin 24-31 output, through 74LS245 integrated chip U
6Driving makes eight sections charactrons luminous.More than form the position segment driver of light-emitting diode display, and constituted the part of I10 interface 16.Keyboard special 15 described in the utility model is selected 5 * 6 scan matrixs for use, and its line scan signals is by 8279 integrated chip U
2End pin 32-35 draw after 74LS138 integrated chip U
7Three or eight code translators that constitute send, and column scan is by 8279 integrated chip U
2R
L0-R
C7Directly connect, be connected to 24 numerals and function key altogether.
Control execution unit 4 of the present utility model comprises by 8155 integrated chip U
8The programmable interface circuit of forming, 245 integrated chip U
9Data driver 17 and the relay circuit formed.From microprocessor U
2Output after be connected to integrated chip U
812-19 end pin on, by integrated chip U
8Output terminal pin 26-36 be connected in two 245 integrated chip U
9The data driver of forming connects TPUP-A micro-printer 18 by this data driver 17.By integrated chip U
9Picked out two-way relay circuit 19 on the data driver of forming, every road relay circuit is by a triode amplifier BG
1Form with the relay J serial connection, this two-way relay J is switched on or switched off respectively and adds alkali or add sour pump, realizes the purpose that pH value is quantitatively controlled.
The utility model is at the microprocessor U of central control unit
1On also directly be connected with machine communication interface 5, it mainly is by 1488 and 1489 integrated chip U
10, U
11The level shifting circuit of forming, U
116 pin insert at U
11 pin on, U
104,5 pin then be connected U
12 pin on.Therefore but this device unit operation not only can connect machine with the DCS system, realizes the collecting and distributing control of factory.
The utility model compared with prior art has following several characteristics: 1) device intelligence Energyization, its collects measurement, data storage, communication, print record and is controlled in one, automatically Change degree height. 2) how function is and practical, and it not only can be used for Online Monitoring Control, Can also be used for the laboratory tests analysis. 3) device has the communication interface of standard, is easy to reality The collecting and distributing control of existing factory. 4) stability and the high conformity of work, precision height, work Reliably, and constant product quality.
Claims (6)
1, a kind of industrial pH value monitor controller, it comprises the sensing transducing unit, central control unit, keyboard and led display unit, control execution unit, it is characterized in that described sensing transducing unit (1) is made up of sensor (6) and analog signal input circuit (7), sensor (6) adopts GR glass combination electrode, and it is connected to the middle microprocessor U of central control unit (2) by the analog signal input circuit of being made up of two groups of prime amplifiers (7)
143 pin on.
2, industrial pH value monitor controller as claimed in claim 1 is characterized in that described central control unit (2) comprises by 8098 integrated chip U
1The microprocessor (8) that constitutes, data-carrier store (9), program storage (10) and clock circuit (11) are at microprocessor U
1Output pin on be connected to control execution unit (4), it comprises by 8155 integrated chip U
8The programmable interface circuit of forming, 245 integrated chip U
9Data driver (17) and the relay circuit (19) formed, relay circuit (19) is by triode amplifier BG
1Be connected in series with relay J and form.
3, industrial pH value monitor controller as claimed in claim 2 is characterized in that in the described control execution unit (4), by integrated chip U
9The data driver of forming (17) is gone up and is connected with TPUP-A type printer (18) by the output terminal pin.
4, as claim 1 or 2 or 3 described industrial pH value monitor controllers, it is characterized in that being connected to keyboard and led display unit (3) behind the described central control unit (2), it comprises the light-emitting diode display of being made up of charactron (14), position segment driver and by three or eight code translators and 8279 control chip U
2The keyboard (15) that links to each other.
5, as claim 1 or 2 or 3 described industrial PH monitor controllers, it is characterized in that the microprocessor U in the described central control unit (2)
1On be connected to communication interface (5), it adopts 1488 and 1489 integrated chip U
10, U
11Form level shifting circuit, U
116 pin insert at microprocessor U
11 pin on, U
104,5 pin be connected in U
12 pin on.
6, industrial pH value monitor controller as claimed in claim 4 is characterized in that the microprocessor U in the described central control unit (2)
1On the company's of being connected to machine communication interface (5), it adopts 1488 and 1489 integrated chip U
10, U
11Form level shifting circuit, U
116 pin insert at U
11 pin on, U
104,5 pin connect U
12 pin on.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96216243 CN2281535Y (en) | 1996-06-26 | 1996-06-26 | Industrial pH monitoring and controlling device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96216243 CN2281535Y (en) | 1996-06-26 | 1996-06-26 | Industrial pH monitoring and controlling device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2281535Y true CN2281535Y (en) | 1998-05-13 |
Family
ID=33897809
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 96216243 Expired - Fee Related CN2281535Y (en) | 1996-06-26 | 1996-06-26 | Industrial pH monitoring and controlling device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2281535Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100451902C (en) * | 2004-08-18 | 2009-01-14 | 哈尔滨工业大学 | Automatic regulation control system for PH value of solution and its automatic control method |
-
1996
- 1996-06-26 CN CN 96216243 patent/CN2281535Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100451902C (en) * | 2004-08-18 | 2009-01-14 | 哈尔滨工业大学 | Automatic regulation control system for PH value of solution and its automatic control method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |