CN201314902Y - Chinese on-line pH meter - Google Patents
Chinese on-line pH meter Download PDFInfo
- Publication number
- CN201314902Y CN201314902Y CNU2008203034921U CN200820303492U CN201314902Y CN 201314902 Y CN201314902 Y CN 201314902Y CN U2008203034921 U CNU2008203034921 U CN U2008203034921U CN 200820303492 U CN200820303492 U CN 200820303492U CN 201314902 Y CN201314902 Y CN 201314902Y
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- CN
- China
- Prior art keywords
- module
- microprocessor
- connects
- meter
- chinese
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model disclose a Chinese on-line pH meter, of which the structure comprises a microprocessor (1), and is characterized in that the microprocessor (1) is connected with a liquid crystal screen (2); the microprocessor (1) is connected with an AD sampling module (3) used for acquiring data; the AD sampling module (3) is respectively connected with a temperature signal processing module (4) and a pH signal processing module (5); the microprocessor (1) is also connected with a photoelectric isolation module (6) used for output; the photoelectric isolation module (6) is connected with a DAC output module (7) and a high-low warning module (8); and the DAC output module (7) is connected with a voltage-to-current converting module (9). The Chinese on-line pH meter adopts the patching technology, has high integration degree, integrates all components and parts into one breadboard, and has the advantages of high integration degree, small volume, convenient use and the like.
Description
Technical field
The utility model relates to the online pH meter of a kind of Chinese, belongs to online pH meter technical field.
Background technology
Present online pH meter on the market, intelligent degree is not high, only statistics have shown, have also that volume ratio is big, the many problems of number of wiring board, as: polylith wiring boards such as display board, mainboard, power panel, signal plate, and be to adopt many resolution elements, integrated degree is low, and result of use is not ideal enough.
Summary of the invention
The purpose of this utility model is: provide a kind of integrated degree height, Chinese online pH meter that volume is little, easy to operate, to overcome the deficiencies in the prior art.
The utility model is to constitute like this: structure comprises microprocessor (1), microprocessor (1) connects LCDs (2), microprocessor (1) connects the AD sampling module (3) that is used for image data, and AD sampling module (3) connects processes temperature signal module (4) and pH signal processing module (5) respectively; Microprocessor (1) also connects the photoelectric isolation module (6) that is used to export, and photoelectric isolation module (6) connects DAC output module (7) and height alarm module (8), and DAC output module (7) connects voltage transitions current module (9).
Above-mentioned Chinese online pH meter, microprocessor (1) are connected with the clock module (10) of demonstration time.
Above-mentioned Chinese online pH meter, processes temperature signal module (4) connects temperature sensor (11), and pH signal processing module (5) connects pH electrode (12).
The utility model adopts mount technology, and integrated degree height, all components and parts are integrated on the wiring board, have not had complicated functional switch and adjusting knob, and volume is little, and installation and use are all very convenient.And adopt Chinese to show that it is explicit to operate on the LCDs.Compare with prior art, the utlity model has advantages such as integrated degree height, volume be little, easy to use.
Description of drawings
Accompanying drawing 1 is circuit theory diagrams of the present utility model;
Embodiment
Embodiment of the present utility model: as shown in Figure 1, microprocessor 1 adopts existing uPSD3234A-40U6 chip, and microprocessor 1 is not only the function of a CPU, and it stores the space of data and program in addition.UPSD3234A has two Flash storeies, and wherein 128K master Flsah storer is used for the dress program; Secondly the inferior Flash of 32K is used to store data.Microprocessor 1 connects LCDs 2, and LCDs 2 adopts MGLS-19264, major function be show to pH value and temperature, and provide the operation interface of full Chinese, make things convenient for the user to operate.The MGLS-19264 that selects for use can provide the demonstration of figure, letter and Chinese character.Microprocessor 1 connects the AD sampling module 3 that is used for image data, and AD sampling module 3 is selected the AD1112IDGST of 16 of binary channels, and a passage is adopted temperature, and a passage is adopted the pH value.AD sampling module 3 connects processes temperature signal module 4 and pH signal processing module 5 respectively; Processes temperature signal module 4 adopts the MC1403 of a SOP8 paster encapsulation to provide constant 2.5V voltage, adopts the principle of electric resistance partial pressure, draws temperature value for the sampling of AD sampling module 3 chips.PH signal processing module 5 adopts the INA116PA chips to gather the pH value signals, for the ADS1112IDGST sampling, volume be traditional pH meter the signal processing part partial volume 1/5.Microprocessor 1 also connects the photoelectric isolation module 6 that is used to export, and photoelectric isolation module 6 connects DAC output module 7 and height alarm module 8, and DAC output module 7 connects voltage transitions current module 9.Photoelectric isolation module 6 effects are that output is with not common-battery source, the not interference each other of pH value part.DAC output module 7 adopts the DAC7512 chip, and volume has only 1/20 of common DAC chip, and height alarm module 8 mainly provides the switching value signal.Voltage transitions current module 9 adopts the LM324 chip.DAC output module 7 is that 12 number is touched conversion chip, and digital signal is converted to the voltage of 1～5V, converts the electric current of 4～20mA again to by voltage transitions current module 9.
Microprocessor 1 is connected with the clock module 10 of demonstration time, and clock module 10 adopts DS12C887, and major function is to provide time reference for instrumentation function and the pH value of storing automatically.
Processes temperature signal module 4 connects temperature sensor 11, and pH signal processing module 5 connects pH electrode 12.
The power module that is provided with on the wiring board 13 adopts HAT10-0512-NF and HDN3-5S24, the alternating current 220V power source conversion become direct current 5V and ± 12V, again the 5V of direct current is converted to 24V.
Claims (3)
- The online pH meter of [claim 1] a kind of Chinese, structure comprises microprocessor (1), it is characterized in that: microprocessor (1) connects LCDs (2), microprocessor (1) connects the AD sampling module (3) that is used for image data, and AD sampling module (3) connects processes temperature signal module (4) and pH signal processing module (5) respectively; Microprocessor (1) also connects the photoelectric isolation module (6) that is used to export, and photoelectric isolation module (6) connects DAC output module (7) and height alarm module (8), and DAC output module (7) connects voltage transitions current module (9).
- The online pH meter of [claim 2] Chinese according to claim 1 is characterized in that: microprocessor (1) is connected with the clock module (10) of demonstration time.
- The online pH meter of [claim 3] Chinese according to claim 1 is characterized in that: processes temperature signal module (4) connects temperature sensor (11), and pH signal processing module (5) connects pH electrode (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008203034921U CN201314902Y (en) | 2008-12-18 | 2008-12-18 | Chinese on-line pH meter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008203034921U CN201314902Y (en) | 2008-12-18 | 2008-12-18 | Chinese on-line pH meter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201314902Y true CN201314902Y (en) | 2009-09-23 |
Family
ID=41126701
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008203034921U Expired - Fee Related CN201314902Y (en) | 2008-12-18 | 2008-12-18 | Chinese on-line pH meter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201314902Y (en) |
-
2008
- 2008-12-18 CN CNU2008203034921U patent/CN201314902Y/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090923 Termination date: 20131218 |