CN201637705U - Dual-channel online dissolved oxygen meter - Google Patents
Dual-channel online dissolved oxygen meter Download PDFInfo
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- CN201637705U CN201637705U CN2010201640055U CN201020164005U CN201637705U CN 201637705 U CN201637705 U CN 201637705U CN 2010201640055 U CN2010201640055 U CN 2010201640055U CN 201020164005 U CN201020164005 U CN 201020164005U CN 201637705 U CN201637705 U CN 201637705U
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Abstract
The utility model discloses a dual-channel online dissolved oxygen meter which comprises a microprocessor (1), wherein the microprocessor (1) is connected with a liquid crystal display (2) and two AD sampling modules (3) used for collecting data, and each sampling module (3) is connected with a temperature signal processing module (4) and a dissolved oxygen signal processing module (5) respectively; and the microprocessor (1) is also connected with photoelectric isolation modules (6) of two channels, which are used for output, the photoelectric isolation module (6) of each channel is respectively connected with a DAC output module (7), and the DAC output module (7) of each channel is respectively connected with a voltage-to-current conversion module (8). The dual-channel online dissolved oxygen meter has the advantages of high degree of integration, small volume, convenient use, multiple channels and the like.
Description
Technical field
The utility model relates to the online dissolved oxygen instrument of a kind of binary channels, belongs to online dissolved oxygen instrument technical field.
Background technology
The present online dissolved oxygen instrument of binary channels on the market, can only single passage, and intelligent degree is not high, numeral shows, also has the bigger problem of volume ratio, 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, and cost is also high.
Summary of the invention
The technical problems to be solved in the utility model is: provide a kind of integrated degree height, volume little, the online dissolved oxygen instrument of easy to operate binary channels is to overcome the deficiencies in the prior art.
The technical solution of the utility model is: structure comprises microprocessor, microprocessor connects LCDs, microprocessor connects 2 AD sampling modules that are used for image data, and each AD sampling module connects processes temperature signal module and dissolved oxygen signal processing module respectively; Microprocessor also connects the two passage photoelectric isolation modules that are used to export, and each photoelectric isolation module connects the DAC output module respectively, and each DAC output module connects the voltage transitions current module respectively.
The online dissolved oxygen instrument of above-mentioned binary channels, the processes temperature signal module of each passage connects temperature sensor respectively, and the dissolved oxygen signal processing module of each passage connects dissolved oxygen electrode respectively.
Compared with the prior art, utility model adopts mount technology, integrated degree height, it is wide that all components and parts are integrated into 130mm() * 120mm(height) a wiring board on, do not had complicated functional switch and adjusting knob, volume is little, and installation and use are all very convenient.The parameter of two passages is provided with separately, and adopts Chinese to show that it is explicit to operate on the LCDs.Separate between two passages, do not disturb mutually.The utility model also has advantages such as integrated degree height, volume is little, easy to use, passage is many simultaneously.
Description of drawings
Fig. 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 dissolved oxygen 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 2 AD sampling modules 3 that are used for image data, and each AD sampling module 3 is selected the AD1112IDGST of 16 of binary channels, and a passage is adopted temperature, and a passage is adopted dissolved oxygen value.Each AD sampling module 3 connects processes temperature signal module 4 and dissolved oxygen 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.Dissolved oxygen signal processing module 5 adopts the OPA128JM chips to gather current signals, amplify by OP07 again and convert voltage to, for the ADS1112IDGST sampling, volume be traditional dissolved oxygen instrument the signal processing part partial volume 1/3.Microprocessor 1 also connects the photoelectric isolation module 6 of two passages that are used to export, adopt the light lotus root of 3 TLP521-1 respectively, the photoelectric isolation module 6 of each passage connects DAC output module 7 respectively, and each DAC output module 7 connects voltage transitions current module 8 respectively.Each photoelectric isolation module 6 effect is that output is with not common-battery source, the not interference each other of dissolved oxygen value part.Each DAC output module 7 adopts the DAC7512 chip, and volume has only 1/20 of common DAC chip.Each voltage transitions current module 8 adopts the LM324 chip.Each 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 8.
The processes temperature signal module 4 of each passage connects the temperature sensor 9 of each passage, and the dissolved oxygen signal processing module 5 of each passage connects the dissolved oxygen electrode 10 of each passage.
The power module that is provided with on the wiring board 11 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 (2)
1. online dissolved oxygen instrument of binary channels, structure comprises microprocessor (1), it is characterized in that: microprocessor (1) connects LCDs (2), microprocessor (1) connects 2 the AD sampling modules (3) that are used for image data, and each AD sampling module (3) connects processes temperature signal module (4) and dissolved oxygen signal processing module (5) respectively; Microprocessor (1) also connects the two passage photoelectric isolation modules (6) that are used to export, the photoelectric isolation module of each passage (6) connects DAC output module (7) respectively, and the DAC output module (7) of each passage connects voltage transitions current module (8) respectively.
2. the online dissolved oxygen instrument of binary channels according to claim 1, it is characterized in that: the processes temperature signal module (4) of each passage connects the temperature sensor (9) of each passage, and the dissolved oxygen signal processing module (5) of each passage connects the dissolved oxygen electrode (10) of each passage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201640055U CN201637705U (en) | 2010-04-20 | 2010-04-20 | Dual-channel online dissolved oxygen meter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201640055U CN201637705U (en) | 2010-04-20 | 2010-04-20 | Dual-channel online dissolved oxygen meter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201637705U true CN201637705U (en) | 2010-11-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201640055U Expired - Fee Related CN201637705U (en) | 2010-04-20 | 2010-04-20 | Dual-channel online dissolved oxygen meter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201637705U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102494936A (en) * | 2011-12-06 | 2012-06-13 | 周永言 | Measuring cell device for trace dissolved oxygen water and device for preparing trace dissolved oxygen water |
| CN102664631A (en) * | 2012-04-18 | 2012-09-12 | 成都阜特科技有限公司 | Current loop isolation, transmission and integration module and multi-channel current transmitting system thereof |
| CN103645223A (en) * | 2013-12-02 | 2014-03-19 | 中山欧麦克仪器设备有限公司 | Self-cleaning double-channel online dissolved oxygen instrument |
| CN104655707A (en) * | 2013-11-20 | 2015-05-27 | 中山欧麦克仪器设备有限公司 | Dissolved oxygen detection apparatus |
-
2010
- 2010-04-20 CN CN2010201640055U patent/CN201637705U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102494936A (en) * | 2011-12-06 | 2012-06-13 | 周永言 | Measuring cell device for trace dissolved oxygen water and device for preparing trace dissolved oxygen water |
| CN102664631A (en) * | 2012-04-18 | 2012-09-12 | 成都阜特科技有限公司 | Current loop isolation, transmission and integration module and multi-channel current transmitting system thereof |
| CN104655707A (en) * | 2013-11-20 | 2015-05-27 | 中山欧麦克仪器设备有限公司 | Dissolved oxygen detection apparatus |
| CN103645223A (en) * | 2013-12-02 | 2014-03-19 | 中山欧麦克仪器设备有限公司 | Self-cleaning double-channel online dissolved oxygen instrument |
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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: 20101117 Termination date: 20140420 |