CN103645223A - Self-cleaning double-channel online dissolved oxygen instrument - Google Patents
Self-cleaning double-channel online dissolved oxygen instrument Download PDFInfo
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- CN103645223A CN103645223A CN201310631375.3A CN201310631375A CN103645223A CN 103645223 A CN103645223 A CN 103645223A CN 201310631375 A CN201310631375 A CN 201310631375A CN 103645223 A CN103645223 A CN 103645223A
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Abstract
The invention discloses a self-cleaning double-channel online dissolved oxygen instrument which comprises a microprocessor and a liquid crystal display screen connected with the microprocessor. The microprocessor is connected with two analog/digital (AD) sampling modules used for acquiring data, wherein each AD sampling module is respectively connected with a temperature signal processing module and a dissolved oxygen signal processing module; the microprocessor is also connected with two-channel photoelectric isolation modules for output, wherein the photoelectric isolation module in each channel is respectively connected with a DAC output module; the DAC output module in each channel is respectively connected with a voltage conversion current module; and a cleaning brush or a nozzle is arranged at a sensing end of a dissolved oxygen sensor. The cleaning brush is arranged at the periphery of the dissolved oxygen sensor, so that the dirt at the periphery of the sensor is timely cleaned, and the accuracy of the data transmitted by the sensor is guaranteed. The dissolved oxygen measuring instrument is small in size and convenient to carry, the parameters in the two channels are independently set, Chinese character display is adopted on the liquid crystal display screen, and the operation is clear. The two channels are independent of each other and do not interferer with each other.
Description
Technical field
The present invention relates to dissolved oxygen instrument technical field, refer in particular to the online dissolved oxygen instrument of a kind of self-cleaning binary channels.
Background technology
At present, conventional dissolved oxygen sensor on market, mostly be polarogram formula and alkaline primary cell dissolved oxygen sensor, its sensor is short serviceable life, and because sensor uses under the rugged surroundings of being everlasting, so sensor needs frequent disassembly, cleaning, the data accuracy of guarantee sensor, is unfavorable for the use of sensor.
Dissolved oxygen tester is the instrumentation of measuring the content that is dissolved in the oxygen in aqueous solution.Oxygen is dissolved in the water by ambient air, Air Flow and photosynthesis.Can be used to measure the flow process be used for the oxygen content to affect reaction velocity, flow path efficiency or environment monitors: as aquaculture, biological respinse, environmental testing (lake, small stream, ocean), water/wastewater treatment, Production of Wine etc.
Current dissolved oxygen tester be take desktop computer substantially as main, adopts septum electrode to make transducer more, converts oxyty (being actually partial pressure of oxygen) to electric signal, then through amplifying, adjusting (comprising salinity, temperature compensation), by analog to digital conversion, is shown.The membrane electrode of dissolved oxygen tester practicality has two types: polarogram type (Polarography) and galvanic cell type (Galvanic Cell).Dissolved oxygen tester has easy for installation, and the demarcation cycle is long, to features such as other materials are insensitive, and can monitor electrolytical service condition in overlay film and probe, and generally each changed once electrolytic matter and overlay film to 3 years.
The current online dissolved oxygen instrument of binary channels on the market, can only single channel, and intelligent degree is not high, numeral shows, also has the problem that volume is larger, as: the 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
In view of this, the present invention is directed to the disappearance of prior art existence, its fundamental purpose be to provide a kind of simple in structure, cost is low, easy to use, automatically cleaning and measure the high online dissolved oxygen instrument of binary channels of precision.
For achieving the above object, the present invention adopts following technical scheme: the online dissolved oxygen instrument of a kind of self-cleaning binary channels, the LCDs that includes microprocessor and be connected with microprocessor, microprocessor connects 2 AD sampling modules for image data, and each AD sampling module connects respectively processes temperature signal module and dissolved oxygen signal processing module; Microprocessor also connects the two passage photoelectric isolation modules for exporting, the photoelectric isolation module of each passage connects respectively DAC output module, the DAC output module of each passage connects respectively voltage transitions current module, and the sensor ends of described dissolved oxygen sensor is provided with cleaning brush or nozzle.
As a kind of preferred version, the processes temperature signal module of each passage connects the temperature sensor of each passage, and the dissolved oxygen signal processing module of each passage connects the dissolved oxygen electrode of each passage.
As a kind of preferred version, described cleaning brush is cylindrical structural cleaning brush.
As a kind of preferred version, described nozzle is titanium nozzle.
The present invention compared with prior art has obvious advantage and beneficial effect, and the periphery by cleaning brush installation with dissolved oxygen sensor, cleans the dirt of sensor periphery in time, guarantees the accuracy of sensor transmissions data.This dissolved oxygen meter volume is little, is convenient for carrying, and can on-the-spotly detect in real time content of oxygen dissolved in water and temperature, and show test value by LCDs.Adopt mount technology, integrated degree is high, and it is wide that all components and parts are integrated into 130mm() * 120mm(is high) a wiring board on, there is no complicated functional switch and adjusting knob, volume is little, installs and uses all very convenient.The parameter of two passages arranges separately, and adopts Chinese display in LCDs, operates explicit.Separate between two passages, do not interfere with each other.
Accompanying drawing explanation
Fig. 1 is the fundamental diagram of the online dissolved oxygen instrument of binary channels of the present invention's embodiment.
Embodiment
Please refer to shown in Fig. 1, it has shown the concrete structure of the present invention's preferred embodiment, the online dissolved oxygen instrument of a kind of self-cleaning binary channels, the LCDs that includes microprocessor and be connected with microprocessor, microprocessor connects 2 AD sampling modules for image data, and each AD sampling module connects respectively processes temperature signal module and dissolved oxygen signal processing module; Microprocessor also connects the two passage photoelectric isolation modules for exporting, the photoelectric isolation module of each passage connects respectively DAC output module, the DAC output module of each passage connects respectively voltage transitions current module, the sensor ends of described dissolved oxygen sensor is provided with cleaning brush or nozzle, described cleaning brush is cylindrical structural cleaning brush, and described nozzle is titanium nozzle.
The processes temperature signal module of each passage connects the temperature sensor of each passage, and the dissolved oxygen signal processing module of each passage connects the dissolved oxygen electrode of each passage.
The detection principle of the online dissolved oxygen instrument of binary channels of the present invention is as shown in Fig. 1, and 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 the main Flsah storer of 128K is for dress program; Secondly the inferior Flash of 32K is used for storing data.
Microprocessor 1 connecting fluid crystal display screen 2, LCDs 2 adopts MGLS-19264, and major function is the showing to dissolved oxygen value and temperature of institute, and the operation interface of full Chinese is provided, and person easy to use operates.The MGLS-19264 selecting can provide the demonstration of figure, letter and Chinese character.2 AD sampling modules 3 that microprocessor 1 connects for image data, 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 respectively processes temperature signal module 4 and dissolved oxygen signal processing module 5; 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, for the 3 chip samplings of AD sampling module, draws temperature value.Dissolved oxygen signal processing module 5 adopts OPA128JM chips to gather current signals, then is amplified and converted to voltage by OP07, for ADS1112IDGST sampling, volume be traditional dissolved oxygen instrument signal processing part partial volume 1/3.Microprocessor 1 also connects the photoelectric isolation module 6 of two passages for exporting, adopt respectively the light lotus root of 3 TLP521-1, the photoelectric isolation module 6 of each passage connects respectively DAC output module 7, and each DAC output module 7 connects respectively voltage transitions current module 8.Each photoelectric isolation module 6 effect is that output is with not common-battery source, the each other not interference of dissolved oxygen value part.Each DAC output module 7 adopts DAC7512 chip, and volume only has 1/20 of common DAC chip.
Each voltage transitions current module 8 adopts LM324 chip.Each DAC output module 7 is that the number of 12 is touched conversion chip, digital signal is converted to the voltage of 1～5V, then by voltage transitions current module 8, converts the electric current of 4～20mA to.
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 11 arranging on wiring board adopts HAT10-0512-NF and HDN3-5S24, alternating current 220V power supply convert to direct current 5V and ± 12V, then the 5V of direct current is converted to 24V.
Design focal point of the present invention is: the periphery by cleaning brush installation with dissolved oxygen sensor, in time the dirt of sensor periphery is cleaned, and guarantee the accuracy of sensor transmissions data.This dissolved oxygen meter volume is little, is convenient for carrying, and can on-the-spotly detect in real time content of oxygen dissolved in water and temperature, and show test value by LCDs.Adopt mount technology, integrated degree is high, and it is wide that all components and parts are integrated into 130mm() * 120mm(is high) a wiring board on, there is no complicated functional switch and adjusting knob, volume is little, installs and uses all very convenient.The parameter of two passages arranges separately, and adopts Chinese display in LCDs, operates explicit.Separate between two passages, do not interfere with each other.
The above, it is only preferred embodiment of the present invention, not technical scope of the present invention is imposed any restrictions, therefore every foundation technical spirit of the present invention is to any trickle modification made for any of the above embodiments, equivalent variations and modification, all still belong in the scope of technical solution of the present invention.
Claims (4)
1. the online dissolved oxygen instrument of self-cleaning binary channels, it is characterized in that: the LCDs that includes microprocessor and be connected with microprocessor, microprocessor connects 2 AD sampling modules for image data, and each AD sampling module connects respectively processes temperature signal module and dissolved oxygen signal processing module; Microprocessor also connects the two passage photoelectric isolation modules for exporting, the photoelectric isolation module of each passage connects respectively DAC output module, the DAC output module of each passage connects respectively voltage transitions current module, and the sensor ends of described dissolved oxygen sensor is provided with cleaning brush or nozzle.
2. according to the online dissolved oxygen instrument of self-cleaning binary channels described in claim 1, it is characterized in that: the processes temperature signal module of each passage connects the temperature sensor of each passage, the dissolved oxygen signal processing module of each passage connects the dissolved oxygen electrode of each passage.
3. according to the online dissolved oxygen instrument of self-cleaning binary channels described in claim 1, it is characterized in that: described cleaning brush is cylindrical structural cleaning brush.
4. according to the online dissolved oxygen instrument of self-cleaning binary channels described in claim 1, it is characterized in that: described nozzle is titanium nozzle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310631375.3A CN103645223A (en) | 2013-12-02 | 2013-12-02 | Self-cleaning double-channel online dissolved oxygen instrument |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310631375.3A CN103645223A (en) | 2013-12-02 | 2013-12-02 | Self-cleaning double-channel online dissolved oxygen instrument |
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| CN103645223A true CN103645223A (en) | 2014-03-19 |
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| CN201310631375.3A Pending CN103645223A (en) | 2013-12-02 | 2013-12-02 | Self-cleaning double-channel online dissolved oxygen instrument |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106383152A (en) * | 2015-07-26 | 2017-02-08 | 江苏中农物联网科技有限公司 | Intelligent dissolved oxygen sensor |
| CN110865106A (en) * | 2019-12-25 | 2020-03-06 | 广州商辉仪业智能科技股份有限公司 | Dissolved oxygen electrode adapter |
| CN113030186A (en) * | 2021-03-04 | 2021-06-25 | 南宁诺博仪器仪表有限公司 | Pen type dissolved oxygen instrument |
| CN113575499A (en) * | 2019-11-25 | 2021-11-02 | 台州星氧电气有限公司 | Motor assembly of aerator |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201637705U (en) * | 2010-04-20 | 2010-11-17 | 贵阳学通仪器仪表有限公司 | Dual-channel online dissolved oxygen meter |
| CN201637710U (en) * | 2010-04-20 | 2010-11-17 | 贵阳学通仪器仪表有限公司 | Multichannel online pH meter |
| CN202757906U (en) * | 2011-11-30 | 2013-02-27 | 李益峰 | Dissolved oxygen sensor with self-cleaning device |
-
2013
- 2013-12-02 CN CN201310631375.3A patent/CN103645223A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201637705U (en) * | 2010-04-20 | 2010-11-17 | 贵阳学通仪器仪表有限公司 | Dual-channel online dissolved oxygen meter |
| CN201637710U (en) * | 2010-04-20 | 2010-11-17 | 贵阳学通仪器仪表有限公司 | Multichannel online pH meter |
| CN202757906U (en) * | 2011-11-30 | 2013-02-27 | 李益峰 | Dissolved oxygen sensor with self-cleaning device |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106383152A (en) * | 2015-07-26 | 2017-02-08 | 江苏中农物联网科技有限公司 | Intelligent dissolved oxygen sensor |
| CN113575499A (en) * | 2019-11-25 | 2021-11-02 | 台州星氧电气有限公司 | Motor assembly of aerator |
| CN113575499B (en) * | 2019-11-25 | 2023-01-17 | 台州星氧电气有限公司 | Motor assembly of aerator |
| CN110865106A (en) * | 2019-12-25 | 2020-03-06 | 广州商辉仪业智能科技股份有限公司 | Dissolved oxygen electrode adapter |
| CN113030186A (en) * | 2021-03-04 | 2021-06-25 | 南宁诺博仪器仪表有限公司 | Pen type dissolved oxygen instrument |
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Application publication date: 20140319 |