CN105494230A - Intelligent orientating oxygenation method and apparatus for aquatic culture - Google Patents
Intelligent orientating oxygenation method and apparatus for aquatic culture Download PDFInfo
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- CN105494230A CN105494230A CN201510643977.XA CN201510643977A CN105494230A CN 105494230 A CN105494230 A CN 105494230A CN 201510643977 A CN201510643977 A CN 201510643977A CN 105494230 A CN105494230 A CN 105494230A
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Abstract
The invention relates to an intelligent orientating oxygenation method and apparatus for aquatic culture.
Description
Technical field
The present invention relates to control and regulation field, especially a kind of culturing pool water body dissolved oxygen concentration subregion wireless measurement large to aquaculture area, according to method and the device thereof of the actual conditions intelligent positioning oxygenation of each region soluble oxygen change.
Background technology
In aquaculture, Dissolved Oxygen in Water content is vital water quality factor in aquaculture, especially careless slightlyly in current high-density aquiculture easily causes fishes and shrimps large area death by suffocation, particularly important to the automatic Measurement & Control of Dissolved Oxygen in Water.
Dissolved Oxygen in Water content is unbalanced, and spot measurement is difficult to the actual conditions accurately reflecting content, and the wired measuring cost of multiple spot is too high, and wiring is complicated, and therefore wireless sensing measurement is applicable mode, and each node adopts lithium battery power supply.
Effective and the most economic current oxygenation way is mechanical enhancement, China's aquaculture more than 80% mechanical enhancement adopts impeller automatic aerator, impeller automatic aerator work can impel the oxygen in air to spread to water body, increase air and water body contact area, Diffusion Law can be derived by Fick's law and double-film theory and be obtained:
Wherein M represents in unit interval t by amount of material that interface is spread; DL is diffusion coefficient; A represents interfacial area; Cs represents the material concentration value that air and liquid level intersection needs spread; C is material concentration; The thickness of liquid film is Xf.From formula (1) during emergent oxygenation, when Dissolved Oxygen in Water content value C is increased to certain value, the operating efficiency of aerator is more and more lower.
The culturing pool that area is large needs multiple stage aerator, but whole culturing pool water body dissolved oxygen content is subject to the objective condition such as wind-force, sunshine and geographical position affects not only levels, and same depth profile difference is also very large, if whole culturing pool water body dissolved oxygen content is integrally measured, open and close multiple stage aerator simultaneously, when certain region soluble oxygen content exceedes closedown threshold values, and whole culturing pool dissolved oxygen content average do not reach close threshold values time, this region aerator works on, according to formula (1), oxygenation efficiency significantly reduces.
Summary of the invention
The technical problem to be solved in the present invention is: propose a kind of aquaculture intelligent positioning oxygenation method and device thereof, by radio sensing network to large area aquaculture pond Dissolved Oxygen in Water content zoning monitoring and control, reach by the transformation of extensive mechanical type automatic aeration to the automatic aeration mode that becomes more meticulous.
The technical solution adopted in the present invention is: a kind of aquaculture intelligent positioning oxygenation method, comprises the following steps:
1) culturing pool is divided into multiple region, each region forms one bunch by multiple measured node, dissolved oxygen sensor is arranged at 0.5 ~ 0.6m place, underwater, each region, and output voltage signal;
2) measured node that a region is corresponding is sent after voltage signal being delivered to modulate circuit process to;
3) measured node perception each region soluble oxygen solubility send cluster head to by after solubility data processing;
4) cluster head is sent to base station to after the data fusion of each measured node, and base station sends PLC to by RS-485 communication;
5) PLC starts according to measurement data or closes the aerator of corresponding region.
Further, step 3 of the present invention) in, measured node is per minute sends a secondary data to cluster head, interior perception N secondary data per minute, and wherein N is positive integer; In order to reduce measuring system random errors affect, measured node sends to cluster head after the data of institute's perception being averaged and deletes gross error by Xiao Weinie criterion, ensure that the stability that dissolved oxygen content is measured.。
Further say, step 4 of the present invention) in, base station is powered by fixed power source; And base station specifies each measured node to serve as cluster head in turn; After base station receives the measurement data that each region cluster head sends, by the serial-port communication of RS-485 order wire and PLC.
Further say, step 5 of the present invention) in, in order to avoid aerator frequent starting and closedown cause mechanical failure, aerator has startup threshold value and cuts out threshold value; PLC monitors each region water body dissolved oxygen content according to measurement data, and oriented control each region aerator starts or cuts out; When dissolved oxygen content is lower than startup threshold value, start aerator; When Dissolved Oxygen in Water content is greater than closedown threshold value, then close aerator.
Meanwhile, present invention also offers a kind of aquaculture intelligent positioning oxygen-increasing device, comprise dissolved oxygen sensor, wireless communication node, aerator and PLC; Described dissolved oxygen sensor is arranged at 0.5 ~ 0.6m place, underwater, culturing pool each region; The output of described dissolved oxygen sensor connects the input of modulate circuit; The output of described modulate circuit connects wireless communication node; Described wireless communication node is connected with base station by radio connection; Described base station connects PLC by RS-485 order wire; Described PLC controls startup or the closedown of aerator.
Wireless communication node of the present invention adopts low power consumption adaptive to hive off layered protocol, comprises microprocessor, A/D interface and RF radio-frequency antenna; The output of described modulate circuit is connected with A/D interface; Wireless communication node is connected with base station by RF radio-frequency antenna; Described modulate circuit and wireless communication node are by lithium battery power supply.
The invention has the beneficial effects as follows: by the process of Xiao Weinie criterion to dissolved oxygen content measured value, delete gross error, ensure that accuracy and the stability of measurement; With open simultaneously or close compared with multiple stage aerator extensive style oxygenation way, improve oxygenation efficiency, decrease the energizing power large load operation time, make electric load more balanced; The oxygenation of intelligent positioning region makes culturing pool water body dissolved oxygen content more balanced, stable, improves aquatic products growing environment.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the present invention is further described.
Fig. 1 is structure principle chart of the present invention;
Fig. 2 is measured node structure chart of the present invention;
Fig. 3 is impeller automatic aerator mode switching control figure of the present invention;
In figure: 1, measured node; 2, cluster head; 3, base station; 4, S7-224PLC; 5, impeller automatic aerator.
Embodiment
The present invention is further detailed explanation with preferred embodiment by reference to the accompanying drawings now.These accompanying drawings are the schematic diagram of simplification, only basic structure of the present invention are described in a schematic way, and therefore it only shows the formation relevant with the present invention.
As shown in Figure 1, system hardware structure comprises: measured node 1, cluster head 2, base station 3, S7-224PLC4 and impeller automatic aerator 5.
In Fig. 1, culturing pool is divided into some regions, each region forms one bunch by several measured node (employing lithium battery power supply), wireless measurement network adopts low power consumption adaptive to hive off layered protocol, each node is specified to serve as cluster head in turn by base station (fixed power source is powered), each node energy is consumed balanced, extend the effective life cycle of radio sensing network.After the complete data of node measurement, time-sharing send is to cluster head, and cluster head sends to base station after merging each node image data.
As shown in Figure 2, measured node is by lithium battery power supply, and dissolved oxygen sensor (YDC-100) output voltage (0 ~ 25V) converts the input voltage of (0 ~ 3.3V) applicable node A/D conversion to through modulate circuit.
Slowly, node is per minute sends a secondary data to cluster head, interior perception 6 secondary data per minute in dissolved oxygen content change, and in order to ensure the accurate of measurement, node deletes gross error by Xiao Weinie criterion, sends to cluster head after averaging.
As 6 times, perception data is respectively X1=5.32mg/L; X2=5.22mg/L; X3=5.30mg/L; X4=5.38mg/L; X5=4.68mg/L; X6=5.22mg/L.
Then try to achieve average X=5.19mg/L, standard deviation=0.256mg/L.As n=6, table look-up and obtain Xiao Weinie coefficient z=1.73, then deviation range v=σ Ζ=0.443mg/L.
Base station adopts fixed power source to power, when after the measurement data receiving the cluster head transmission of each region, by the serial-port communication of RS-485 order wire and Siemens S7-224PLC, after PLC obtains the measurement data of each region soluble oxygen content, start according to impeller automatic aerator switch control rule rule shown in Fig. 3 and close aerator.When dissolved oxygen content is lower than 4.0mg/L, start aerator, if the consumption of culturing pool dissolved oxygen content is large, natural world supplements few (as little in wind, overcast and rainy etc.) Dissolved Oxygen in Water content, dissolved oxygen content is all the time lower than 6.0mg/L, then impeller automatic aerator remains starting state, if measurement obtains Dissolved Oxygen in Water content be greater than 6.0mg/L, then closes aerator.Ensure that Dissolved Oxygen in Water content all-the-time stable is in the scope of the 4.0mg/L to 6.0mg/L of applicable fish growth.PLC monitors each region water body dissolved oxygen content according to measurement data, the work of oriented control each region aerator.
The just the specific embodiment of the present invention described in above specification, various illustrating is not construed as limiting flesh and blood of the present invention, person of an ordinary skill in the technical field after having read specification can to before described embodiment make an amendment or be out of shape, and do not deviate from the spirit and scope of the invention.
Claims (6)
1. an aquaculture intelligent positioning oxygenation method, is characterized in that comprising the following steps:
1) culturing pool is divided into multiple region, each region forms one bunch by multiple measured node, dissolved oxygen sensor is arranged at 0.5 ~ 0.6m place, underwater, each region, and output voltage signal;
2) measured node that a region is corresponding is sent after voltage signal being delivered to modulate circuit process to;
3) measured node perception each region soluble oxygen solubility send cluster head to by after solubility data processing;
4) cluster head is sent to base station to after the data fusion of each measured node, and base station sends PLC to by RS-485 communication;
5) PLC starts according to measurement data or closes the aerator of corresponding region.
2. a kind of aquaculture intelligent positioning oxygenation method as claimed in claim 1, is characterized in that: described step 3) in, measured node is per minute sends a secondary data to cluster head, interior perception N secondary data per minute, and wherein N is positive integer; Measured node sends to cluster head after the data of institute's perception being averaged and deletes gross error by Xiao Weinie criterion.
3. a kind of aquaculture intelligent positioning oxygenation method as claimed in claim 1, is characterized in that: described step 4) in, base station is powered by fixed power source; And base station specifies each measured node to serve as cluster head in turn; After base station receives the measurement data that each region cluster head sends, by the serial-port communication of RS-485 order wire and PLC.
4. a kind of aquaculture intelligent positioning oxygenation method as claimed in claim 1, is characterized in that: described step 5) in, aerator has startup threshold value and cuts out threshold value; PLC monitors each region water body dissolved oxygen content according to measurement data, and oriented control each region aerator starts or cuts out; When dissolved oxygen content is lower than startup threshold value, start aerator; When Dissolved Oxygen in Water content is greater than closedown threshold value, then close aerator.
5. the device that adopts of aquaculture intelligent positioning oxygenation method as claimed in claim 1, is characterized in that: comprise dissolved oxygen sensor, wireless communication node, aerator and PLC; Described dissolved oxygen sensor is arranged at 0.5 ~ 0.6m place, underwater, culturing pool each region; The output of described dissolved oxygen sensor connects the input of modulate circuit; The output of described modulate circuit connects wireless communication node; Described wireless communication node is connected with base station by radio connection; Described base station connects PLC by RS-485 order wire; Described PLC controls startup or the closedown of aerator.
6. aquaculture intelligent positioning oxygen-increasing device as claimed in claim 5, is characterized in that: described wireless communication node adopts low power consumption adaptive to hive off layered protocol, comprises microprocessor, A/D interface and RF radio-frequency antenna; The output of described modulate circuit is connected with A/D interface; Wireless communication node is connected with base station by RF radio-frequency antenna; Described modulate circuit and wireless communication node are by lithium battery power supply.
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Cited By (6)
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CN106647835A (en) * | 2017-03-09 | 2017-05-10 | 福建强闽信息科技有限公司 | Smart aerator based on narrowband Internet of Things and dissolved oxygen stereoscopic monitoring method |
CN106665460A (en) * | 2017-01-16 | 2017-05-17 | 常州大学 | Method and device for green accurate oxygenation control of aquaculture |
CN108633814A (en) * | 2018-03-21 | 2018-10-12 | 青岛海尔科技有限公司 | Control method, device, system, storage medium and the Intelligent fish tank of Intelligent fish tank |
CN108651369A (en) * | 2018-04-27 | 2018-10-16 | 宿松富民水产养殖有限公司 | A kind of loach breeding enhancement of environment system based on more aerators |
CN108828142A (en) * | 2018-04-27 | 2018-11-16 | 宿松富民水产养殖有限公司 | The comprehensive method for automatically regulating of oxygen in a kind of loach pond |
CN109726392A (en) * | 2018-12-13 | 2019-05-07 | 井冈山大学 | A kind of intelligent language Cognitive Information Processing Based and method based on big data |
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Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN106665460A (en) * | 2017-01-16 | 2017-05-17 | 常州大学 | Method and device for green accurate oxygenation control of aquaculture |
CN106647835A (en) * | 2017-03-09 | 2017-05-10 | 福建强闽信息科技有限公司 | Smart aerator based on narrowband Internet of Things and dissolved oxygen stereoscopic monitoring method |
CN108633814A (en) * | 2018-03-21 | 2018-10-12 | 青岛海尔科技有限公司 | Control method, device, system, storage medium and the Intelligent fish tank of Intelligent fish tank |
CN108651369A (en) * | 2018-04-27 | 2018-10-16 | 宿松富民水产养殖有限公司 | A kind of loach breeding enhancement of environment system based on more aerators |
CN108828142A (en) * | 2018-04-27 | 2018-11-16 | 宿松富民水产养殖有限公司 | The comprehensive method for automatically regulating of oxygen in a kind of loach pond |
CN109726392A (en) * | 2018-12-13 | 2019-05-07 | 井冈山大学 | A kind of intelligent language Cognitive Information Processing Based and method based on big data |
CN109726392B (en) * | 2018-12-13 | 2023-10-10 | 井冈山大学 | Intelligent language cognition information processing system and method based on big data |
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