CN203151749U - Network node of wireless sensor for facility agriculture - Google Patents

Abstract

A network node of a wireless sensor for facility agriculture belongs to the field of electronic monitoring equipment. The utility model aims to design a network node of a wireless sensor for facility agriculture based on a ZigBee wireless sensor network by combining the advantages and characteristics of the current wireless sensor network technology on the basis of the crop growth environment in greenhouse. An electric box is installed on the upper end of an extracting-inserting rod, and a temperature and humidity sensor and a wireless receiving antenna are installed on the electrical box. The extracting-inserting rod is inserted in an upper sleeve, a cavity inside the upper sleeve is provided with an eccentric sleeve, the bottom surface of the eccentric sleeve is an inclined plane, a reset spring is sleeved on the upper end of the eccentric sleeve, a key is installed in the side wall of the upper sleeve, and one end, placed inside the cavity of the upper sleeve, of the key is an inclined plane. A connecting sleeve is installed on the lower end of the upper sleeve through threads, and bosses on the lower end of the connecting sleeve are placed in grooves on the upper end of a lower sleeve. A support rod is fixedly installed on the lower end of the lower sleeve, and the bottom end of the support rod is provided with probes. The electric box is internally provided with a central processor, a dial switch, an acquisition module circuit, a power module, a serial communication module, a control circuit module and a feedback circuit. For planting out-of-season and high-additional-value crops, greenhouse environment monitoring plays a decisive role in the whole growth period of crops.

Description

A kind of industrialized agriculture wireless sensor network node

Technical field

The utility model belongs to the electronic monitoring equipment field.

Background technology

Along with raising and the extensive use of high and new technology on agricultural of scientific and technological level, great variety has taken place in China's agricultural structure.Wherein the industrialized agriculture based on vegetables industry has become extremely important innovation industry in China's agricultural production, and the status in social and economic activities day by day promotes.Industrialized agriculture is can effectively control the arable farming environment, uses advanced engineering and the high investment of plantation administrative skill, the intensive agricultural of high production, be to guarantee supply in agricultural product dull seasons, regulate market supply and demand seasonal fluctuation, increase farmers' income, improve the effective way of people's living standard.What China's industrialized agriculture was popularized the area maximum at present is to be the booth vegetable production of representative with the greenhouse.Since the reform and opening-up, the development of China facility cultivation rapidly, the installment agriculture growth area has reached 86.7 ten thousand hectares, wherein 40.7 ten thousand hectares of huts in the plastics account for 46.9%; 23.3 ten thousand hectares of hot houses account for 26.9%; 22.7 ten thousand hectares in greenhouse accounts for 26.2%.Calculating by absolute area has been the first in the world.China has obtained certain progress in the research aspect the agriculture Internet of Things; but these researchs and application great majority still rest on the theoretical research level; perhaps just be applied in the displaying project of scientific research institutions; Jilin Province is most of regional and (account for the facility cultivation gross area and surpass 90% hot house and heliogreenhouse) particularly in traditional greenhouse; peasant households still adopt the mode of simple and easy control system or even hand-guided; the popularity rate of TT﹠C system is very low; not with real being applied in the extensive environmental monitoring of technology of Internet of things, so also inreal its effect of performance of this new technique.

In modernized agricultural production, warmhouse booth plantation fruit and vegetable food is selected to use by increasing peasant household, because characteristics such as himself climatic effect and isolation effects, can off-season cultivation and regulate and control crop, and played high yields irrespective of drought or water logging, the isolated effect in space.But in the most existing greenhouse, 1 adopts the mode of traditional management at home, relies on people's experience to come crop in the planting greenhouse, needs work strength big, can be because people's experience error in judgement causes the bad growth of crop.

2 adopt the way of behavior adjustment management, the indoor electronic monitoring equipment of hand wired, when substituting, crop rearranges cable and mobile monitoring equipment, arrange that improper meeting influence the equipment acquisition precision and reduce service life of equipment, the plant maintenance difficulty is big, the labor intensive material resources have increased the cost of investment that the greenhouse is built.

3 adopt modern wireless device, measure specific environment parameter in the greenhouse, the cost height, and it is big to promote difficulty.

Summary of the invention

The purpose of this utility model is on the basis of crop growth environment in the greenhouse, and advantage and characteristics in conjunction with current radio sensing network technology have designed the industrialized agriculture wireless sensor network node based on the ZigBee radio sensing network.

The utility model is equipped with the electrical equipment box on pulling and pushing bar, Temperature Humidity Sensor and wireless receiving antenna are installed on the electrical equipment box; Pulling and pushing the bar insertion goes up in the cover, in the inner cavity of cover, eccentric bushing is arranged, the bottom surface of eccentric bushing is the inclined-plane, corresponding with the sloping platform on the last cover inwall, the upper end of eccentric bushing is with back-moving spring, sidewall at cover is equipped with button, and it is the inclined-plane that button places an end of the cavity inside of cover, and the minimum point on inclined-plane, eccentric bushing bottom withstands on the inclined-plane of button; Last cover lower end is equipped with adapter sleeve by screw thread, and the boss of adapter sleeve lower end places down in the groove of set upper side; The lower end of trapping is installed with pole, and the pole bottom is probe;

Central processing unit, toggle switch, acquisition module circuit, power module, serial communication modular, control circuit module, feedback circuit are arranged in the electrical equipment box;

Toggle switch is connected with three pins of IO11, IO12, IO13 of central processing unit;

J4 is that the aerial temperature and humidity transducer is connected to central processing unit by IO mouth 0,1;

The 6V voltage that power module will insert outward converts the needed 3.3V voltage of central processing unit to through TPS5430 voltage transitions chip;

MAX232 links to each other with TXD, RXD, CTS, the RTS of central processing unit in the serial port module;

Control circuit module TP521-4 optocoupler connects the IO0,1,8,14 mouthful of central processing unit;

UP2_Limit and DOWN1_LIMIT gather the positional information of roller shutter machine, isolate through the photoelectricity of optocoupler, this signal are sent to IO18, the IO19 pin of microprocessor.

The utility model is integrated aerial temperature and humidity, intensity of illumination, CO ₂The collection of concentration, six parameters of soil moisture/temperature, save a node and only measured the cost of environmental parameter, and transmission range can be transmitted a km under spacious environment, can reduce in the monitored area and to arrange and count, being compared to traditional ZigBee node has higher treatment effeciency and farther transmission range.Also possess the control function simultaneously, can control the action of water pump and roller shutter machine.Be the complete greenhouse surroundings monitoring equipment of a cover.Have advantages such as low cost, low-power consumption.

The utility model is for the crops of plantation anti-season, high added value, and the warmhouse booth environmental monitoring plays a part very important in the growth cycle of whole crops.Use Internet of Things intellectual monitoring technology to obtain the interior environmental information of booth in real time, can not only allow the grower in the very first time, grasp the upgrowth situation of crop, can also allow the grower regulate and control integrated environment parameter in the booth (as the switch skylight, opening roller shutter machine etc.) in time according to environmental information.Be conducive to the efficient utilization of accurate fertilising, water-saving irrigation and worm medicine resource, can effectively alleviate environmental pollution, promote the quality of crop.It is the inexorable trend that realizes agricultural modernization, agricultural standardization, peasant's systematism and agricultural sustainable development.

Description of drawings

Fig. 1 is the utility model structural representation;

Fig. 2 is the utility model central processing unit schematic diagram;

Fig. 3 is the utility model toggle switch circuit theory diagrams;

Fig. 4 is the utility model acquisition module circuit theory diagrams;

Fig. 5 is the utility model power module circuitry schematic diagram;

Fig. 6 is the utility model serial communication modular circuit theory diagrams;

Fig. 7 is the utility model control circuit modular circuit schematic diagram;

Fig. 8 is the utility model feedback circuit schematic diagram;

Fig. 9 is the utility model schematic block circuit diagram;

Among the figure, the IO0 of aerial temperature and humidity transducer and microprocessor, IO1 links to each other;

The IO14 of illuminance sensor module and microprocessor, IO15 links to each other;

CO ₂Sensor assembly links to each other with the AD3 of microprocessor;

The IO18 of microprocessor links to each other with 2 pin of optocoupler TP521, and 3 pin of TP521 link to each other with relay, and relay links to each other with the power end of soil moisture temperature sensor;

Toggle switch links to each other with the IO11,12,13 of microprocessor;

Power module links the VCC of the device that is untreated;

The MAX232 module links to each other with TXD, RXD, CTS, the RTS of microprocessor;

The reset circuit module links to each other with the RESET end of microprocessor;

Control end circuit and feedback signal circuit link with the IO of microprocessor respectively.

Embodiment

The utility model is equipped with electrical equipment box 2 pulling and pushing bar 3 upper ends, and Temperature Humidity Sensor 9 and wireless receiving antenna 1 are installed on the electrical equipment box 2; Pulling and pushing bar 3 insertions goes up in the cover 6, in the cavity of cover 6 inside, eccentric bushing 5 is arranged, the bottom surface of eccentric bushing 5 is the inclined-plane, corresponding with the sloping platform 7 on last cover 6 inwalls, the upper end of eccentric bushing 5 is with back-moving spring 4, sidewall at cover 6 is equipped with button 10, and it is the inclined-plane that button 10 places an end of the cavity inside of cover 6, and the minimum point on inclined-plane, eccentric bushing 5 bottom withstands on the inclined-plane of button 10; Last cover 6 lower ends are equipped with adapter sleeve 11 by screw thread, and the boss 12 of adapter sleeve 11 lower ends places in the groove 13 of 8 upper ends of trapping, and can make adapter sleeve 11 and trap 8 along boss 12 and groove 13 rotations; 8 lower ends of trapping are installed with pole 14, and pole 14 bottoms are probes 15.

The course of work of the utility model mechanical part is:

When needs adjustment height, unclamp button 10, this moment, eccentric bushing 5 was coaxial with last cover 6, pull and push bar 3 like this and can up and downly adjust height, adjustment finishes, just push button 10, because button 10 is inclined-planes with the contact site of eccentric bushing 5, like this, pushed button 10 o'clock, the least significant end of eccentric bushing 5 will be slided along the inclined-plane of button 10, thereby makes this eccentric bushing 5 mobile in the other direction, the axle center of eccentric bushing 5 is moved, make eccentric bushing 5 and last cover 6 not on same axle center, pass eccentric bushing 5 and extend to and overlap in 6 owing to pull and push bar 3, but eccentric bushing 5 and last cover 6 different axle center, eccentric bushing 5 and last cover 6 will pull and push bar 3 clampings like this, will be fixing by frictional force.

Probe 15 is inserted in ground, receives the data message of soil, passes through inner lead then with the central processing unit of data information transfer to electrical equipment box inside, carries out collection and the analysis of soil information.

Central processing unit, toggle switch, acquisition module circuit, power module, serial communication modular, control circuit module, feedback circuit are arranged in electrical equipment box 2;

The toggle switch lock is connected with three pins of IO11, IO12, IO13 of microprocessor, when the user selects various combination, just set the identity of this module, wireless data acquisition module, water pump intelligent wireless control module, roller shutter machine intelligent wireless control module.

J4 is that the aerial temperature and humidity transducer is connected to microprocessor by IO mouth 0,1, and timing microprocessor is gathered the data of aerial temperature and humidity transducer and converted corresponding physical parameter value to.The value that will collect by the JENNET wireless network communication protocol uploads onto the server.

J5 is that the intensity of illumination transducer passes through I ²C interface is connected to microprocessor, and timing microprocessor is gathered the data of intensity of illumination transducer and converted corresponding physical parameter value to.The value that will collect by the JENNET wireless network communication protocol uploads onto the server.

J2 is CO ₂Transducer is connected to microprocessor by the AD interface, and timing microprocessor is gathered CO ₂The data of transducer also convert corresponding physical parameter value to.The value that will collect by the JENNET wireless network communication protocol uploads onto the server.

In order to satisfy the requirement of whole system low-power consumption, for soil moisture/temperature sensor, because it needs the high power power supply, so adopt power supply when needing to gather in the Circuits System, the mode of outage is handled when not needing to gather.Microprocessor is put the IO18 low level, optocoupler TP521 conducting (optocoupler plays the effect that photoelectricity is isolated), thereby relay conducting, and soil moisture sensor is connected with the 6V direct current, reaches the purpose of just powering and gathering when needing to gather.

During the central processing unit drainage pattern, numeral, the analog signal conversion being responsible for sensor transmissions is come become the respective physical value of consult volume, and these information are uploaded onto the server by the JENNET wireless network protocol; During the water pump control model, be responsible for to check IO8 high-low level situation, thereby determine that water pump is to open or closed condition and upload water pump state this moment at this moment, can receive order control water pump simultaneously and open the latter and close; During the roller shutter pattern, be responsible for to check IO18,19 high-low level situation, thus determine the roller shutter machine this moment the roller shutter machine the position and upload the situation of current roller shutter, can receive the action of order control roller shutter machine simultaneously.

The 6V voltage that power module will insert outward converts the needed 3.3V voltage output of microprocessor to through TPS5430 voltage transitions chip.

MAX232 links to each other with TXD, RXD, CTS, the RTS of microprocessor in the serial port module, is responsible for the program burn writing work of module.

Control circuit module TP521-4 optocoupler connects the IO0,1,8,14 mouthful of central processing unit; When processor is received the order of the motor-driven work of control roller shutter, put IO0,1 mouthful of corresponding high-low level.When receiving the order of control water pump, put IO8 mouth high level or low level.

UP2_Limit and DOWN1_LIMIT gather the positional information of roller shutter machine, isolate through the photoelectricity of optocoupler, this signal are sent to IO18, the IO19 pin of microprocessor.Microprocessor is judged the position of roller shutter this moment by the high-low level signal of reading the IO mouth.

JENNET wireless network protocol stack

System module is confirmed as the Router(route) or END Device(terminal) in the network of self-organizing, understand automatic uploading nodes information to the Coordinator(telegon).If be confirmed as telegon, only be responsible for reception route and terminal and upload information.

The utility model course of work:

As the collection point:

(as warmhouse booth) installs the Zigbee node in the zone of needs monitoring, and after the energising, the Zigbee node is at first sought network and added network automatically.After adding network, transducer is started working, air themperature, air humidity in the transducer timing acquiring monitored area, CO ₂Concentration, soil water content, six environmental parameter values of the soil moisture.Air temperature, humidity sensor are connected with the DIO0,1 of microprocessor, with the monitored area in the data of airborne humiture send microprocessor to, after the data transaction that microprocessor collects the aerial temperature and humidity transducer becomes the actual physics value, by wireless ZigBee network the actual physics value is sent to gateway.The intensity of illumination transducer is connected with the DIO14,15 of little processing, with the monitored area in the data of sunlight intensity send microprocessor to, after the data transaction that microprocessor collects the intensity of illumination transducer becomes the actual physics value, by wireless ZigBee network the actual physics value is sent to gateway.CO ₂Concentration sensor is connected with the ADC3 interface of little processing, with the CO in the monitored area ₂Concentration value sends microprocessor to, and microprocessor is with CO ₂After the data transaction that concentration sensor collects becomes the actual physics value, by wireless ZigBee network the actual physics value is sent to gateway.Soil moisture, temperature sensor are connected with ADC2 with the ADC1 of microprocessor, send low level signal by timing microprocessor to DIO8, when DIO8 receives low level signal, the optocoupler conducting, relay contact closure, soil moisture, temperature sensor work on power, and send the numerical value of the moisture in the soil that collects and temperature to microprocessor, microprocessor sends to gateway by the Zigbee wireless network with the actual physics value after converting this numerical value to the actual physics value.Finish whole observation process.

As the control point:

With water pump or the supporting installation of roller shutter machine Zigbee control node.After the energising, the zigbee node is at first sought network and is added network automatically.Control node meeting monitor equipment status, if water pump control node, water pump is connected with DIO14, and DIO14 is high level, and water pump cuts out, and DIO14 is that the low level water pump is opened.Timing microprocessor detects the high-low level situation of DIO14, and with water pump be open or closing state by the ZIGbee wireless network, send to gateway.When node was received the order of opening water pump, it was low level that DIO14 is put in corresponding little processing; When node was received the order that switches off the pump, it was high level that DIO14 is put in corresponding little processing.If roller shutter control node, roller shutter machine and DIO, 1 links to each other, the rotation up and down of control motor.

If roller shutter control node is installed limit switch respectively at top and the low side of booth, limit switch is connected with the DIO18,19 of microprocessor.Microprocessor detects DIO18,19 high-low level situations are judged roller shutter position this moment, and the positional information of roller shutter machine sends to gateway by the zigbee wireless network at this moment.When node was received the order that opens or closes the roller shutter machine, correspondingly to DIO0,1 high-low level, DIO0,1 linked to each other with motor, thereby control roller shutter machine rotates up and down.

Experimental data:

Below be this device experiment stage in the indoor sample data that collects:

Time	Air themperature	Air humidity	CO2 concentration	Soil water content	The soil moisture
						14：00	17℃	23%	365ppm	71%	14℃
14：05	18	25%	356ppm		70							15
						14: 10	17	24%	366ppm		72		15
14:15	16	23%	370ppm		71							15
						14:20	17	22%	344ppm		70		14
14:25	17	23%	358ppm		72							14
						14:30	16	23%	369ppm		71		15

Claims (1)

1. an industrialized agriculture wireless sensor network node is characterized in that: on pulling and pushing bar (3) electrical equipment box (2) is installed, Temperature Humidity Sensor (9) and wireless receiving antenna (1) are installed on the electrical equipment box (2); Pull and push and overlap in (6) in bar (3) insertion, in the inner cavity of cover (6), eccentric bushing (5) is arranged, the bottom surface of eccentric bushing (5) is the inclined-plane, corresponding with the sloping platform (7) on last cover (6) inwall, the upper end of eccentric bushing (5) is with back-moving spring (4), sidewall at cover (6) is equipped with button (10), and it is the inclined-plane that button (10) places an end of the cavity inside of cover (6), and the minimum point on eccentric bushing (5) inclined-plane, bottom withstands on the inclined-plane of button (10); Last cover (6) lower end is equipped with adapter sleeve (11) by screw thread, and the boss (12) of adapter sleeve (11) lower end places in the groove (13) of (8) upper end of trapping; (8) lower end of trapping is installed with pole (14), and pole (14) bottom is probe (15);

Central processing unit, toggle switch, acquisition module circuit, power module, serial communication modular, control circuit module, feedback circuit are arranged in electrical equipment box (2);

Toggle switch is connected with three pins of IO11, IO12, IO13 of central processing unit;

J4 is that the aerial temperature and humidity transducer is connected to central processing unit by IO mouth 0,1;

The 6V voltage that power module will insert outward converts the needed 3.3V voltage of central processing unit to through TPS5430 voltage transitions chip;

MAX232 links to each other with TXD, RXD, CTS, the RTS of central processing unit in the serial port module;

Control circuit module TP521-4 optocoupler connects the IO0,1,8,14 mouthful of central processing unit;

UP2_Limit and DOWN1_LIMIT gather the positional information of roller shutter machine, isolate through the photoelectricity of optocoupler, this signal are sent to IO18, the IO19 pin of microprocessor.

Images