CN201935891U - Opened extensible multi-channel on-line pH meter - Google Patents
Opened extensible multi-channel on-line pH meter Download PDFInfo
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- CN201935891U CN201935891U CN2011200067056U CN201120006705U CN201935891U CN 201935891 U CN201935891 U CN 201935891U CN 2011200067056 U CN2011200067056 U CN 2011200067056U CN 201120006705 U CN201120006705 U CN 201120006705U CN 201935891 U CN201935891 U CN 201935891U
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Abstract
An opened extensible multi-channel on-line pH meter relates to the technology of electronics. A microprocessor of the pH meter is connected with a liquid crystal display screen and at least four extensible slots; an extensible board is connected with the microprocessor through the extensible slots and is provided with a temperature signal processing module and a pH signal processing module which are respectively connected with an AD (analogue/digital) sampling module; the temperature signal processing module is connected with a temperature sensor; and the pH signal processing module is connected with a pH electrode. Compared with the prior art, the pH meter has the advantages of high integrated degree, small volume, convenience in use, multiple channels, and the like.
Description
Technical field
The utility model relates to electronic technology.
Background technology
Present online pH meter on the market, majority is single passage, and intelligent degree is not high, only statistics have shown, also has the bigger problem of volume ratio, and is to adopt many resolution elements, and integrated degree is low, and result of use is not ideal enough, and cost is also high.The design of minority hyperchannel also is to be fixed on the 2-4 passage, and the user in use as needing a passage, then need buy an instrument more like this, and cost is higher.
The utility model content
Technical problem to be solved in the utility model is, a kind of new online pH meter is provided, have can expand, the characteristics of miniaturization.
The technical scheme that the utility model solve the technical problem employing is, the open online pH meter of hyperchannel of expanding, comprise microprocessor, microprocessor connects LCDs, microprocessor also connects at least 4 expansion slots, expansion board is connected with microprocessor by expansion slot, expansion board is provided with processes temperature signal module and pH signal processing module, the processes temperature signal module is connected with the AD sampling module respectively with the pH signal processing module, the processes temperature signal module connects temperature sensor, and the pH signal processing module connects the pH electrode.
Also be provided with photoelectric isolation module on the expansion board, photoelectric isolation module connects the DAC output module, and the DAC output module connects the voltage transitions current module, and photoelectric isolation module is connected with the AD sampling module.
The utility model is easy to operate, is similar to the design of computer motherboard expansion slot, when the user need increase passage, only need plug the passage expansion board and gets final product, and is separate between each passage, do not disturb mutually.Compare with prior art, the utlity model has advantages such as integrated degree height, volume is little, easy to use, passage is many.
Below in conjunction with the drawings and specific embodiments the utility model is further described.
Description of drawings
Fig. 1 is an one-piece construction synoptic diagram of the present utility model.
Fig. 2 is the structural representation of expansion board of the present utility model.
Embodiment
Referring to Fig. 1,2.
Microprocessor 1 of the present utility model connects LCDs 2, microprocessor 1 also connects at least 4 expansion slots 3, expansion board 4 is connected with microprocessor 1 by expansion slot 3, expansion board 4 is provided with processes temperature signal module 9 and pH signal processing module 11, processes temperature signal module 9 is connected with AD sampling module 8 respectively with pH signal processing module 11, processes temperature signal module 9 connects temperature sensor 10, and pH signal processing module 11 connects pH electrode 12.Power supply chip 13 is system's power supply.
Also be provided with photoelectric isolation module 7 on the expansion board 4, photoelectric isolation module 7 connects DAC output module 6, and DAC output module 6 connects voltage transitions current module 5, and photoelectric isolation module 7 is connected with AD sampling module 8.
Microprocessor 1 connects 4 expansion slots 3, each expansion slot 3 corresponding expansion board.
More specifically, microprocessor 1 adopts existing uPSD3234A-40T6 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 HYG-19264, major function be show to pH value, temperature and electric current, and provide the operation interface of full Chinese, make things convenient for the user to operate.The HYG-19264 that selects for use can provide the demonstration of figure, letter and Chinese character.Microprocessor 1 connects the expansion slot 3 that is used for the signal input and output, expansion board 4 is inserted on the expansion slot, and expansion board comprises the AD sampling module 5 of image data, and each AD sampling module 8 is selected the AD1112IDGST of 16 of binary channels, a passage is adopted temperature, and a passage is adopted the pH value.Each AD sampling module 8 connects processes temperature signal module 9 and pH signal processing module 11 respectively; Each processes temperature signal module 9 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 8 chips.Each pH signal processing module 11 adopts INA116PA chips to gather pH value signals, for the ADS1112IDGST sampling, volume be traditional pH meter the signal processing part partial volume 1/5.Expansion board 4 also comprises the photoelectric isolation module 7 that is used to export, and adopts the light lotus root of 3 TLP521-1, and photoelectric isolation module 7 connects DAC output module 6, and DAC output module 6 connects voltage transitions current module 5.Photoelectric isolation module 7 effects are to make not common-battery source of output and pH value part, do not disturb each other.DAC output module 6 adopts the DAC7512 chip, and volume has only 1/20 of common DAC chip.Voltage transitions current module 6 adopts the LM324 chip.DAC output module 6 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 5.
The power module that is provided with on the wiring board 13 adopts MS05-05W 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.
Expansion slot of the present utility model can be for a plurality of, and suggestion is set to 8 expansion slots, as the 3-1 among Fig. 1 to 3-8, with satisfied demand in most cases.Instructions has illustrated clearly that those of ordinary skill can be implemented according to instructions fully to principle of the present utility model and necessary details, so for more detailed details, for example physical arrangement of the inner structure of each chip, expansion slot etc. repeats no more.
Claims (3)
1. the open online pH meter of hyperchannel of expanding, microprocessor (1) connects LCDs (2), it is characterized in that: microprocessor (1) also connects at least 4 expansion slots (3), expansion board (4) is connected with microprocessor (1) by expansion slot (3), expansion board (4) is provided with processes temperature signal module (9) and pH signal processing module (11), processes temperature signal module (9) is connected with AD sampling module (8) respectively with pH signal processing module (11), processes temperature signal module (9) connects temperature sensor (10), and pH signal processing module (11) connects pH electrode (12).
2. the open online pH meter of hyperchannel of expanding as claimed in claim 1, it is characterized in that, also be provided with photoelectric isolation module (7) on the expansion board (4), photoelectric isolation module (7) connects DAC output module (6), DAC output module (6) connects voltage transitions current module (5), and photoelectric isolation module (7) is connected with AD sampling module (8).
3. the open online pH meter of hyperchannel of expanding as claimed in claim 1 is characterized in that, microprocessor (1) connects 8 expansion slots (3), the corresponding expansion board of each expansion slot (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200067056U CN201935891U (en) | 2011-01-11 | 2011-01-11 | Opened extensible multi-channel on-line pH meter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200067056U CN201935891U (en) | 2011-01-11 | 2011-01-11 | Opened extensible multi-channel on-line pH meter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201935891U true CN201935891U (en) | 2011-08-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200067056U Expired - Fee Related CN201935891U (en) | 2011-01-11 | 2011-01-11 | Opened extensible multi-channel on-line pH meter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201935891U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102694530A (en) * | 2012-05-11 | 2012-09-26 | 蔡远文 | Pulse signal test device of inertial platform for launch vehicle |
| CN106370215A (en) * | 2015-07-23 | 2017-02-01 | 上海天贺自动化仪表有限公司 | Multichannel digital transmission recorder |
-
2011
- 2011-01-11 CN CN2011200067056U patent/CN201935891U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102694530A (en) * | 2012-05-11 | 2012-09-26 | 蔡远文 | Pulse signal test device of inertial platform for launch vehicle |
| CN106370215A (en) * | 2015-07-23 | 2017-02-01 | 上海天贺自动化仪表有限公司 | Multichannel digital transmission recorder |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110817 Termination date: 20130111 |