CN101666767A - Multichannel plant hydropenia monitoring system based on impedance measurement - Google Patents
Multichannel plant hydropenia monitoring system based on impedance measurement Download PDFInfo
- Publication number
- CN101666767A CN101666767A CN200910093912A CN200910093912A CN101666767A CN 101666767 A CN101666767 A CN 101666767A CN 200910093912 A CN200910093912 A CN 200910093912A CN 200910093912 A CN200910093912 A CN 200910093912A CN 101666767 A CN101666767 A CN 101666767A
- Authority
- CN
- China
- Prior art keywords
- plant
- impedance
- mouth
- module
- measurement
- Prior art date
- 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.)
- Granted
Links
Images
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
- Y02P90/02—Total factory control, e.g. smart factories, flexible manufacturing systems [FMS] or integrated manufacturing systems [IMS]
Landscapes
- Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
Abstract
The invention relates to a multichannel plant hydropenia monitoring system based on impedance measurement. The system is a portable system comprising an electrode, a measuring lead, an impedance measuring unit, a USB communication and control unit and a personal computer, wherein the electrode adopts a metal sheet, is arranged at a plurality of parts of leaves and stems of a plant or inserted intosoil in a non-invasive way and connected to the impedance measuring unit by the single-core coaxial measuring lead; the impedance measuring unit comprises an impedance measuring module, a calibrationand measuring range selecting module and a channel selecting module and is supplied with power by a USB data line; and the USB communication and control unit realizes the communication between the impedance measuring unit and the personal computer. The system controls the switching-on and switching-off of a switch by an interface procedure on the personal computer, realizes the function of multichannel impedance measurement, acquires the change information of the impedance of a plurality of parts of the leaves and the stems of the plant and the soil along with water content and displays the hydropenia condition of the plant on the interface. The system can preset a time interval to carry out long-term monitoring so that the monitoring of the hydropenia condition of the plant is more portable.
Description
[technical field]
The invention belongs to field of measuring technique, particularly a kind of multichannel plant hydropenia monitoring system based on impedance measurement.
[background technology]
Water is the main constituent of plant, and the water cut of plant is generally 60～80%, have in addition can reach more than 90%, do not have life without water.Water is the solvent of a lot of materials, after all necessary elder generation such as the mineral matter in the soil, oxygen, carbon dioxide is water-soluble, and could be by plant absorbing and running in vivo.Water can also be kept the tensity of cell and tissue, makes the plant organ situation of being kept upright, and is beneficial to normally carrying out of various metabolism.Water is that photosynthesis is made organic raw material, and it also participates in a lot of Biochemical processes in the plant as reactant.In addition, water when temperature acutely changes, can relax plasmic temperature variation because bigger thermal capacity is arranged, and escapes injury with the protection protoplasm.Therefore water seems particularly important to the vital movement of plant.
The plant water requirement is sizable, and a strain corn approximately needed to consume about 2 kilograms water in one day, needed kg water more than 200 all one's life.One day water requirement of one strain trees in summer approximates heavy 5 times of its whole bright leaves.Therefore, lack of water is very serious concerning plant.In the evolution of long period of time process, plant is that the balance that root system absorbs between water and the rising water of blade adapts to water environment on every side by water balance in the body.Generally speaking, at low temp area and low temperature season, plant water absorbing capacity and transpiration rate are little, poor growth; Vice versa, must supply more water this moment and could satisfy demand and the acquisition higher output of plant to water.Therefore whether in monitoring plant during lack of water, plant base of leaf water percentage and soil moisture content all will be monitored all sidedly.
Water can be divided into two kinds of drought injury and damage or crop failure caused by waterloggings to the adverse effect of plant.Drought injury is caused by atmospheric drought and soil drought that mainly it is damaged the physiological activity in the plant, and makes water balance unbalance.Gently then make the plant reproductive growth retardation, deterioration in quality, diseases and insect pests resistance weakens, and is heavy then cause plant to be in wilted condition for a long time and death.Damage or crop failure caused by waterlogging then is to cause soil severe depletion of oxygen, CO under the waterflooding condition because of soil moisture is too much and atmospheric humidity is too high
2Accumulation makes in the movable and soil of plant physiology that microbial activities is undesired, soil compaction, nutrient loss or inefficacy, the decline of plant product quality.Therefore whether monitoring plant suffers drought and damage caused by waterlogging, seems particularly urgent, and needs long term monitoring, runs through the whole growth process of plant.
External popular employing DTR technology is come the water percentage of monitoring plant, and this technology is the cost height not only, and needs to use the DTR waveguide probe to insert in the plant, can cause certain injury to plant, especially just is difficult for adopting when the precious species of monitoring.Domestic also some adopts by measuring characteristics such as plant resistance, electric capacity and comes the monitoring plant lack of water, has occurred also recently that the veggetable electricity impedance monitors by measuring, but they have adopted probe to insert in the plant.And the present invention adopts metal electrode film to place plant surface to monitor, and can not cause any harm to plant.
In addition, existingly come to have adopted high frequency signal generator in the technology of monitoring plant lack of water, can cause certain injury plant by measuring the veggetable electricity impedance, and the circuit complexity.And the present invention adopts in low frequency signal (1kHz to 100kHz) measurement plant impedance down, can not injure plant, and need not special signal generator in circuit design, has simplified circuit, has improved the reliability of total system.
Electrical measurement mode monitoring plant lack of water often can not be monitored a plurality of positions in real time simultaneously to the monitoring of plant and soil at present, and but the present invention has characteristics such as frequency sweep, high precision, hyperchannel, demarcation automatically, measurement automatically, timing measurement, can be simultaneously a plurality of positions and the soil of plant be carried out long-term on-line monitoring, help the research of plant hydropenia mechanism.
The present invention also considers plant hydropenia, has plenty of that the soil lack of water causes, has plenty of that the base of leaf transpiration too much causes, therefore can provide the pouring prompting respectively at plant base of leaf and soil, so more helps plant and recovers rapidly from exsiccosis.
[summary of the invention]
The purpose of this invention is to provide a kind of multichannel plant hydropenia monitoring system based on impedance measurement, can carry out the long-term lack of water monitoring of non-intrusion type to plant base of leaf and a plurality of positions of soil simultaneously, the water shortage status that shows plant, and provide the pouring prompting at plant base of leaf and soil respectively.
For achieving the above object, a kind of plant hydropenia monitoring system of measuring based on hyperchannel, automatic impedance provided by the invention, by the following technical solutions:
The portable system that described system is made up of electrode, measuring lead wire, impedance measuring unit, USB communication and control module and PC.Electrode adopts sheet metal, and electrode is placed a plurality of positions of plant base of leaf or inserts soil in the non-intruding mode, is connected to impedance measuring unit by the coaxial measuring lead wire of single core.Impedance measuring unit comprises impedance measurement module, demarcation and measurement range selection module, channel selecting module, is powered by the usb data line.USB communication and control module are realized the communication of impedance measuring unit and PC.This system by the break-make of interface program gauge tap, realizes hyperchannel impedance measurement function on PC, obtain the information of the impedance of a plurality of positions of plant base of leaf and soil with the water percentage variation, and shows the water shortage status of plant on the interface.This system carries out long term monitoring in the predeterminable time interval, makes that the monitoring of plant hydropenia situation is more convenient.
Wherein, the square or circular electrode of being made by sheet metal is placed at a plurality of positions and the soil 112 of plant base of leaf 111 by described system, and electrode 113 places plant surface, need not to insert in the plant, carries out the non-intrusion type impedance measurement under low frequency.Passage two ends in succession respectively the VIN mouth 223 and the VOUT mouth 224 of impedance measurement module 221.During measurement, one or more pairs of electrodes 113 are used to measure plant, and pair of electrodes 114 is used for measured soil, and measuring lead wire 123,124 is single core coaxial cable.
Wherein, the impedance measurement module 221 of described system middle impedance measuring unit 121 is made of AD5933 chip and peripheral circuit, demarcates and measurement range selection module 231 is a relay switch, and channel selecting module 251 is made of multiway analog switch.
Wherein, demarcate in the described system and measurement range selection module 231 employing relay switches, on PC, control the switch control mouth 232 of demarcation and measurement range selection module 231 by the I/O mouth 212 of USB communication and control module 211.Carry out timing signal, the I/O mouth 233 of demarcation and measurement range selection module 231 switches to the RFB mouth 222 and the VIN mouth 223 of impedance measurement module 221 on the measuring resistance of current/voltage-converted resistor group 241 corresponding ranges, the VIN mouth 223 of impedance measurement module 221 and VOUT mouth 224 switch on the measuring resistance of demarcating resistor group 242 corresponding ranges, measure and calculate calibration coefficient, realize demarcating.Demarcate subsequently and being connected of VIN mouth 223 that the I/O mouth 233 of measurement range selection module 231 disconnects impedance measurement modules 221 and VOUT mouth 224 and demarcation resistor group 242, system enters the measurement state.
Wherein, described system uses multiway analog switch as channel selecting module, on PC, select the switch control mouth 252 of module 251 by I/O mouth 212 control channels of USB communication and control module 211, the VIN mouth 223 and the VOUT mouth 224 of the I/O mouth 253 control group measurement modules 221 of channel selecting module 251 switch to respective channel, realize multi-channel measurement.
Wherein, described system USB communication and control module 211 are the EZ-USB-FX2 family chip, by USB 2.O agreement and PC 141 communications, pass through I
2C agreement control group measurement module 221 is demarcated and measurement range selection module 231 and channel selecting module 251 by 212 controls of I/O mouth.
Wherein, according to the described a kind of multichannel plant hydropenia monitoring system of claim 1 based on impedance measurement, it is characterized in that adopting on the described system PC 141 Visual Basic, the program interface of Labview or Visual C++ establishment, adopt firmware program on slave computer USB communication and the control module by Keil uVision establishment, carry out the hyperchannel impedance measurement by described impedance measuring unit 121, come the moisture situation of monitoring plant base of leaf and soil according to resistance value, and on the PC interface, show in real time water shortage status and the pouring prompting of plant, and can preset measuring time at interval and T.T. length carry out long term monitoring.Wherein water shortage status comprises great drought, partial drought, and lack of water, little waterlogging, five grades of waterloging greatly, the pouring prompting comprises plant base of leaf pouring suggestion amount and soil pouring suggestion amount.
The advantage of a kind of multichannel plant hydropenia monitoring system based on impedance measurement provided by the invention is:
1. adopt the impedance measurement mode, concentrated expression plant when lack of water, physiology generation resistive, capacitive character and inductive variation, the measurement range of water percentage wide (water percentage 0 to 100%);
2. can realize multi-channel measurement, can monitor simultaneously plant base of leaf and a plurality of positions of soil;
3. electrode places plant surface, need not to insert in the plant, carries out the non-intrusion type impedance measurement under low frequency, has avoided the injury to plant, and does not influence measuring accuracy;
4. plant base of leaf and soil are done corresponding pouring prompting respectively, make that pouring is more effective, the conserve water resource;
5. predeterminable measuring intervals of TIME and T.T. length carry out long term monitoring;
6.USB integrate power supply and communication, system bulk is little, and is simple to operate, is easy to carry, and is convenient to Data Post.
[Figure of description]
Fig. 1 be a kind of based on hyperchannel, regularly, the plant hydropenia monitoring system synoptic diagram measured of automatic impedance;
Fig. 2 is USB communication and control module and impedance measuring unit principle of work synoptic diagram.
[embodiment]
Specific implementation process is as follows:
With reference to accompanying drawing 1, Fig. 2, the USB patchcord of impedance measuring unit 121 by USB communication and control module 131 is connected to PC 141; Setting measurement frequency and Measuring Time on PC VB interface select to be measured passage or all passage measurement of automaticallying switch, and USB communication and control module 131 are sent to impedance measuring unit 121 with the parameter of setting; Measuring the one or more pairs of electrodes 113 of plant and the pair of electrodes 114 of measured soil is connected on the corresponding measurement passage 121 by measuring lead wire 123 and 124, channel selecting module 251 automatic switchover passages are demarcated and suitable range is demarcated and selected to measurement range selection module 231 automatically; Impedance measuring unit 121 records the amplitude and the phase angle of the impedance at each monitoring position of plant base of leaf and soil, and is uploaded to PC program interface 141 through USB communication and control module 131 and handles, store, show.As the need long term monitoring, predeterminable measuring intervals of TIME and T.T. length.
According to the relation of the plant hydropenia situation that records in advance and resistance value, angle values, judge the degree of water shortage of plant, and show the residing water shortage status of plant in real time.With required water percentage under the water percentage of plant base of leaf and soil and the health status relatively, respectively plant base of leaf and soil are provided the pouring prompting.
The above; only be the basic scheme of specific implementation method of the present invention, but protection scope of the present invention is not limited thereto, any those skilled in the art that are in technical scope disclosed by the invention; the variation that can expect or replacement all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection domain of claim.All fall into the implication that is equal to of claim and the variation in the scope all will be included within the scope of claim.
Claims (7)
1. the present invention relates to a kind of multichannel plant hydropenia monitoring system, the portable system that described system is made up of electrode, measuring lead wire, impedance measuring unit, USB communication and control module and PC based on impedance measurement.Electrode adopts sheet metal, and electrode is placed a plurality of positions of plant base of leaf or inserts soil in the non-intruding mode, is connected to impedance measuring unit by the coaxial measuring lead wire of single core.Impedance measuring unit comprises impedance measurement module, demarcation and measurement range selection module, channel selecting module, is powered by the usb data line.USB communication and control module are realized the communication of impedance measuring unit and PC.This system by the break-make of interface program gauge tap, realizes hyperchannel impedance measurement function on PC, obtain the information of the impedance of a plurality of positions of plant base of leaf and soil with the water percentage variation, and shows the water shortage status of plant on the interface.This system carries out long term monitoring in the predeterminable time interval, makes that the monitoring of plant hydropenia situation is more convenient.
2. according to the described a kind of multichannel plant hydropenia monitoring system of claim 1 based on impedance measurement, it is characterized in that the square or circular electrode that described system is made by sheet metal in a plurality of positions and soil 112 placements of plant base of leaf 111, electrode 113 places plant surface, need not to insert in the plant, under low frequency, carry out the non-intrusion type impedance measurement.Passage two ends in succession respectively the VIN mouth 223 and the VOUT mouth 224 of impedance measurement module 221.During measurement, one or more pairs of electrodes 113 are used to measure plant, and pair of electrodes 114 is used for measured soil, and measuring lead wire 123,124 is single core coaxial cable.
3. according to the described a kind of multichannel plant hydropenia monitoring system of claim 1 based on impedance measurement, the impedance measurement module 221 that it is characterized in that described system middle impedance measuring unit 121 is made of AD5933 chip and peripheral circuit, demarcate and measurement range selection module 231 is a relay switch, channel selecting module 251 is made of multiway analog switch.
4. according to the described a kind of multichannel plant hydropenia monitoring system of claim 1 based on impedance measurement, it is characterized in that demarcating in the described system and measurement range selection module 231 employing relay switches, on PC, control the switch control mouth 232 of demarcation and measurement range selection module 231 by the I/O mouth 212 of USB communication and control module 211.Carry out timing signal, the I/O mouth 233 of demarcation and measurement range selection module 231 switches to the RFB mouth 222 and the VIN mouth 223 of impedance measurement module 221 on the measuring resistance of current/voltage-converted resistor group 241 corresponding ranges, the VIN mouth 223 of impedance measurement module 221 and VOUT mouth 224 switch on the measuring resistance of demarcating resistor group 242 corresponding ranges, measure and calculate calibration coefficient, realize demarcating.Demarcate subsequently and being connected of VIN mouth 223 that the I/O mouth 233 of measurement range selection module 231 disconnects impedance measurement modules 221 and VOUT mouth 224 and demarcation resistor group 242, system enters the measurement state.
5. according to the described a kind of multichannel plant hydropenia monitoring system of claim 1 based on impedance measurement, it is characterized in that described system uses multiway analog switch as channel selecting module, on PC, select the switch control mouth 252 of module 251 by I/O mouth 212 control channels of USB communication and control module 211, the VIN mouth 223 and the VOUT mouth 224 of the I/O mouth 253 control group measurement modules 221 of channel selecting module 251 switch to respective channel, realize multi-channel measurement.
6. according to the described a kind of multichannel plant hydropenia monitoring system of claim 1, it is characterized in that described system USB communication and control module 211 are the EZ-USB-FX2 family chip, by USB 2.O agreement and PC 141 communications, pass through I based on impedance measurement
2C agreement control group measurement module 221 is demarcated and measurement range selection module 231 and channel selecting module 251 by 212 controls of I/O mouth.
7. according to the described a kind of multichannel plant hydropenia monitoring system of claim 1 based on impedance measurement, it is characterized in that adopting on the described system PC 141 Visual Basic, the program interface of Labview or Visual C++ establishment, adopt firmware program on slave computer USB communication and the control module by Keil uVision establishment, carry out the hyperchannel impedance measurement by described impedance measuring unit 121, come the moisture situation of monitoring plant base of leaf and soil according to resistance value, and on the PC interface, show in real time water shortage status and the pouring prompting of plant, and can preset measuring time at interval and T.T. length carry out long term monitoring.Wherein water shortage status comprises great drought, partial drought, and lack of water, little waterlogging, five grades of waterloging greatly, the pouring prompting comprises plant base of leaf pouring suggestion amount and soil pouring suggestion amount.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100939127A CN101666767B (en) | 2009-10-10 | 2009-10-10 | Multichannel plant hydropenia monitoring system based on impedance measurement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100939127A CN101666767B (en) | 2009-10-10 | 2009-10-10 | Multichannel plant hydropenia monitoring system based on impedance measurement |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101666767A true CN101666767A (en) | 2010-03-10 |
| CN101666767B CN101666767B (en) | 2012-11-21 |
Family
ID=41803479
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009100939127A Expired - Fee Related CN101666767B (en) | 2009-10-10 | 2009-10-10 | Multichannel plant hydropenia monitoring system based on impedance measurement |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101666767B (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014017940A1 (en) | 2012-07-26 | 2014-01-30 | Universidade De Coimbra | System and process to assess physiological states of plant tissues, in vivo and/or in situ, using impedance techniques |
| CN106324357A (en) * | 2016-08-08 | 2017-01-11 | 西安理工大学 | Plant leaf resistance distribution measurement method and application thereof |
| CN106688812A (en) * | 2016-12-13 | 2017-05-24 | 重庆维得鲜农业发展有限公司 | Transplanting machine |
| CN106706722A (en) * | 2017-03-16 | 2017-05-24 | 南京信息职业技术学院 | Transplanted tree state monitoring system |
| CN106950877A (en) * | 2017-03-21 | 2017-07-14 | 甘肃省治沙研究所 | One kind is used for lysimeter group running environment protection system |
| CN107328441A (en) * | 2017-07-19 | 2017-11-07 | 北京林业大学 | A kind of forestry microenvironment monitoring and early warning system |
| CN108508288A (en) * | 2018-01-22 | 2018-09-07 | 中国农业大学 | Plant electric signal detection device and method |
| CN108828335A (en) * | 2017-04-21 | 2018-11-16 | 艾力集团有限责任公司-卡皮贾尼 | The device and method for determining bacterium charge (charge) in liquid or semi-fluid product |
| CN111158299A (en) * | 2020-03-20 | 2020-05-15 | 艾德克斯电子（南京）有限公司 | Software system capable of controlling instrument by multiple channels and method for reducing computer consumption |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1048560C (en) * | 1992-12-25 | 2000-01-19 | 南京航空航天大学 | Multi-Channel intelligent moisture and temp. measuring and controlling instrument |
| CN100429519C (en) * | 2006-11-01 | 2008-10-29 | 中国农业大学 | Method for detecting plant electric signal in green house and special equipment thereof |
| CN101236188B (en) * | 2007-01-31 | 2011-04-13 | 北京林业大学 | Soil moisture wireless measuring apparatus |
| CN101236168B (en) * | 2007-01-31 | 2010-12-08 | 北京林业大学 | Plant moisture percentage measuring apparatus |
-
2009
- 2009-10-10 CN CN2009100939127A patent/CN101666767B/en not_active Expired - Fee Related
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014017940A1 (en) | 2012-07-26 | 2014-01-30 | Universidade De Coimbra | System and process to assess physiological states of plant tissues, in vivo and/or in situ, using impedance techniques |
| CN106324357A (en) * | 2016-08-08 | 2017-01-11 | 西安理工大学 | Plant leaf resistance distribution measurement method and application thereof |
| CN106688812A (en) * | 2016-12-13 | 2017-05-24 | 重庆维得鲜农业发展有限公司 | Transplanting machine |
| CN106688812B (en) * | 2016-12-13 | 2020-04-07 | 重庆维得鲜农业发展有限公司 | Transplanting machine |
| CN106706722A (en) * | 2017-03-16 | 2017-05-24 | 南京信息职业技术学院 | Transplanted tree state monitoring system |
| CN106950877A (en) * | 2017-03-21 | 2017-07-14 | 甘肃省治沙研究所 | One kind is used for lysimeter group running environment protection system |
| CN108828335A (en) * | 2017-04-21 | 2018-11-16 | 艾力集团有限责任公司-卡皮贾尼 | The device and method for determining bacterium charge (charge) in liquid or semi-fluid product |
| CN108828335B (en) * | 2017-04-21 | 2021-12-21 | 艾力集团有限责任公司-卡皮贾尼 | Device and method for determining the charge of bacteria in a fluid or semifluid product |
| CN107328441A (en) * | 2017-07-19 | 2017-11-07 | 北京林业大学 | A kind of forestry microenvironment monitoring and early warning system |
| CN108508288A (en) * | 2018-01-22 | 2018-09-07 | 中国农业大学 | Plant electric signal detection device and method |
| CN108508288B (en) * | 2018-01-22 | 2020-01-17 | 中国农业大学 | Plant electric signal detection device and method |
| CN111158299A (en) * | 2020-03-20 | 2020-05-15 | 艾德克斯电子（南京）有限公司 | Software system capable of controlling instrument by multiple channels and method for reducing computer consumption |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101666767B (en) | 2012-11-21 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101666767B (en) | Multichannel plant hydropenia monitoring system based on impedance measurement | |
| JP6546585B2 (en) | Plant growth system | |
| CN204613684U (en) | From the long-term supervisory system of the appearance real-time culture environment of aquatic products of original position | |
| CN104280533A (en) | Bluetooth-based soil moisture monitoring sensor | |
| CN201892670U (en) | Four-pin type soil humidity wireless sensor node | |
| CN204177982U (en) | A kind of portable winter bamboo shoot detector | |
| CN203662742U (en) | Livestock life monitoring and alarm system | |
| CN103149243B (en) | Tree heat pulse transpiration determinator and measuring method thereof | |
| CN202523197U (en) | Greenhouse environment information wireless data acquisition device | |
| CN204612750U (en) | A kind of crop microenvironment information real-time monitoring device | |
| CN104991505B (en) | A kind of aquaculture water quality parameter awareness apparatus | |
| CN201813072U (en) | Wireless sensor network measure and control device for prefabricated substations | |
| CN202562527U (en) | Plant physiological ecology monitoring system | |
| CN207423861U (en) | Embedded multiple spot soil testing assemblies | |
| CN207742581U (en) | Environmental data detection device | |
| CN202472401U (en) | Water quality monitoring and remote control system | |
| CN206546181U (en) | Plant monitoring instrument and the plant monitoring system with it | |
| CN211042536U (en) | Long-range collection system of granary temperature | |
| CN104932563A (en) | Aquaculture seawater seedling dissolved oxygen automatic control device and method | |
| CN114093131A (en) | Farmland drought and flood disaster early warning device based on solar technology | |
| CN204479103U (en) | A kind of sensor node for detecting Tea planting soil environment parameter | |
| CN207636983U (en) | Water quality on-line monitoring terminal | |
| CN202928618U (en) | Forest habitat factor collection device | |
| CN206147287U (en) | Pond aquaculture environment remote control and measurement system | |
| CN201955453U (en) | Battery itinerant detector |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121121 Termination date: 20151010 |
|
| EXPY | Termination of patent right or utility model |