CN102487789A - Remote variable frequency irrigation monitoring system based on ZigBee and general packet radio service (GPRS) - Google Patents
Remote variable frequency irrigation monitoring system based on ZigBee and general packet radio service (GPRS) Download PDFInfo
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Abstract
The invention discloses a remote variable frequency irrigation monitoring system based on ZigBee and general packet radio service (GPRS). In the prior art, wires are arranged complexly and are difficult to extend. The system comprises a field monitoring part and a remote monitoring center, wherein the field monitoring part comprises a data acquisition node, a frequency converter control node, an electromagnetic valve control node and a field convergence node; a wireless ZigBee communication protocol is adopted in the communication of the field monitoring part; the remote monitoring center consists of a personal computer (PC) machine and monitoring software; the data acquisition node, the frequency converter control node and the electromagnetic valve control node are used for acquiring the information of an irrigation field, and the information is transmitted to the field convergence node and transmitted to the remote monitoring center through a GPRS network; the remote monitoring center is used for displaying the information of the irrigation field in real time and accurately controlling the irrigation by controlling the frequency converter control node and the electromagnetic valve control node; and the system realizes unmanned remote irrigation monitoring by combining the ZigBee technology and the GPRS technology.
Description
Technical field
The present invention relates to the technical field of agricultural water conservation intelligent irrigation, specifically is that long distance control system is irrigated in a kind of frequency conversion based on ZigBee and GPRS.
Background technology
The water resource of China has been in state in short supply, and wherein the agricultural water amount accounts for 75% of total water amount, but the availability of China's agricultural irrigation water is merely 45% at present, serious waste phenomenon, and the paste water-saving irrigation technique of development automation is imperative.Along with the develop rapidly of electronic information technology, the water-saving irrigation system of automation has had very big development.The host computer that many employing wired connection modes are formed in traditional irrigation monitoring system and the level two of slave computer, slave computer is generally Embedded single-chip microcomputer, and host computer is generally industrial computer, connects through various bus cables between them.But this type of system wiring is complicated, is difficult for moving.Particularly bigger at monitoring range, under the more situation of sensor and Control Node, installation wiring can face very big difficulty with moving all, and wiring also is a high investment on a large scale.On the other hand; In the water-saving irrigation garden; Particularly in the drip irrigation or sprinkling irrigation system in the green house, because the pattern of farming of crop is different with implantation time in each green house, the water requirement of the irrigation period of each booth, irrigating water quota and whole garden all can be considered at random; And each booth required pressure when irrigating is certain, is to belong to fixed-voltage altering-current to supply water.Not only can satisfy through the mode that adopts frequency conversion to irrigate and to irrigate the requirement that flow and pipeline pressure change at any time, energy savings and water resource are protected dropper or irrigation pipe simultaneously.
Summary of the invention
The objective of the invention is to overcome the deficiency of prior art, provide a kind of frequency conversion to irrigate long distance control system based on ZigBee and GPRS technology.
Irrigate long distance control system based on the frequency conversion of ZigBee and GPRS and comprise on-site supervision part and remote monitoring center two parts; Wherein on-site supervision partly comprises data acquisition node, Frequency Converter Control node, solenoid control node and on-the-spot aggregation node; Wireless ZigBee communication protocol is adopted in the communication of on-site supervision part, and network topology structure is a Star Network; Remote monitoring center is made up of a PC and a monitoring software that connects the Internet network; On-the-spot environmental information is irrigated in the data acquisition node collection; The solenoid control node is gathered the switching information of valve; The Frequency Converter Control node is gathered the pressure information of irrigation conduit; These information all send to on-the-spot aggregation node, and on-the-spot aggregation node sends to remote monitoring center through GPRS network with the mode of ICP/IP protocol again; Remote monitoring center shows the on-the-spot information of irrigating in real time; Send to on-the-spot aggregation node to control instruction with ICP/IP protocol through GPRS network through patterned control interface and send to Frequency Converter Control node and solenoid control node by it again, irrigation is accurately controlled; The VFC node is the closed loop subsystem of a constant voltage control, has designed the pid algorithm of constant voltage control on the processor of node, and it is according to the output voltage of the control command control DA passage of the Surveillance center that receives; Frequency with the control frequency converter; The rotating speed of on-the-spot water pump is irrigated in control, thereby the pressure of control irrigation conduit lets system when carrying out dropper or sprinkling irrigation, can change the pressure of pipeline at any time according to the needs of irrigating; The protection pipeline, and guarantee to irrigate the constant of required pressure; The battery valve Control Node receives the switch of the control command rear drive magnetic valve of Surveillance center.
Data acquisition node comprises JN5139 wireless singlechip, intensity of illumination sensor TSL2550D, aerial temperature and humidity sensor SHT11, soil moisture sensor TDR-3 and antenna; The JN5139 wireless singlechip respectively with intensity of illumination sensor TSL2550D; Aerial temperature and humidity sensor SHT11; Soil moisture sensor TDR-3, antenna is connected.TSL2550D and SHT11 are data signal output, can directly link to each other with the I/O mouth of JN5139; The output signal of TDR-3 is the aanalogvoltage of 0-2.5V, is depressured to the AD input (the AD input range of JN5139 is 0-2.4V) of delivering to JN5139 behind the 0-2.0V again.
The Frequency Converter Control node comprises JN5139 wireless singlechip, antenna, a HCNR201 photoelectric isolation module, the 2nd HCNR201 photoelectric isolation module, frequency converter, water pump, pipeline and pressure sensor; Wireless singlechip JN5139 links to each other with antenna; The DA voltage output end of JN5139 is received the analog voltage input of frequency converter again behind linear isolation of the first optocoupler HCNR201 and amplification module, the three-phase voltage output of frequency converter links to each other with the three-phase voltage input of water pump again; Pressure sensor is installed on the irrigation conduit, and the output of pressure sensor is sent to JN5139 again after the linear Isolation Amplifier Module of the second linear optical coupling HCNR201.This node constitutes the constant voltage RACS of closed loop.
The solenoid control node comprises JN5139 wireless singlechip, antenna, optocoupler P521 Isolation Amplifier Module, solid-state relay and magnetic valve; The JN5139 wireless singlechip links to each other with antenna; The I/O output of JN5139 is connected with solid-state relay after optocoupler P521 Isolation Amplifier Module again, and solid-state relay is connected with the magnetic valve of each irrigation conduit respectively.
On-the-spot aggregation node comprises JN5139 wireless singlechip, GTM900 GPRS module and antenna, the JN5139 wireless singlechip respectively with antenna, GTM900 GPRS module connects.JN5139 and GTM900 GPRS module are to communicate through the RS232 serial ports.
Beneficial effect of the present invention is:
1) self-organizing of ZigBee technology, low cost, low in power consumption are that the on-the-spot monitor network structure of irrigation is very simple, have saved complicated cable wiring in traditional monitor network.System's installation and maintenance are easy, are easy to expansion.
2) combined ZigBee technology and the GPRS technology in the radio sensing network; Promptly made full use of wireless sensor network node flexibly, node deployment characteristics easily; The transmission range of wireless sensor network data of having utilized the GPRS technological expansion again; Realized unattended irrigation remote monitoring, can carry out the accurate irrigation of intelligence according to site environment information.
3) for adapting to the needs that water saving irrigated area fixed-voltage altering-current is irrigated, designed the Frequency Converter Control node.This node is formed the control system of a closed loop by wireless singlechip JN5139, the linear isolation of two HCNR201 and amplification module, frequency converter, water pump and pressure sensor, has designed the pid algorithm program that constant voltage is controlled on the microcontroller JN5139.JN5139 controls the frequency of frequency converter according to the output voltage of the control command control DA passage of the Surveillance center that receives; Irrigate the rotating speed of on-the-spot water pump with control; Thereby the water pressure of control irrigation conduit; Let system when carrying out dropper or sprinkling irrigation, can change the pressure of pipeline, protect pipeline and guarantee to irrigate the constant of required pressure according to the needs of irrigating.
Description of drawings
Fig. 1 is based on the structured flowchart of the frequency conversion irrigation long distance control system of ZigBee and GPRS technology;
Fig. 2 is a data acquisition node circuit block diagram of the present invention;
Fig. 3 is a Frequency Converter Control node circuit block diagram of the present invention;
Fig. 4 is a solenoid control node circuit block diagram of the present invention;
Fig. 5 is the circuit block diagram of on-the-spot aggregation node of the present invention;
Fig. 6 is a monitoring center software functional diagram of the present invention.
Embodiment
As shown in Figure 1; Irrigate long distance control system based on the frequency conversion of ZigBee and GPRS technology and comprise on-site supervision part and remote monitoring center two parts; Wherein on-site supervision partly comprises data acquisition node, Frequency Converter Control node, solenoid control node and on-the-spot aggregation node, and wireless ZigBee communication protocol is adopted in the communication of on-site supervision part; Remote monitoring center is made up of a PC and a corresponding monitoring software that connects the Internet network; On-the-spot environmental information is irrigated in the data acquisition node collection; The solenoid control node is gathered the switching information of valve; These information all send to on-the-spot aggregation node, and on-the-spot aggregation node sends to remote monitoring center through GPRS network with the mode of ICP/IP protocol again; Remote monitoring center shows the on-the-spot information of irrigating in real time; Send to on-the-spot aggregation node to control instruction with ICP/IP protocol through GPRS network through patterned control interface and send to Frequency Converter Control node and solenoid control node by it again, irrigation is accurately controlled; The VFC node is the closed loop subsystem of a constant voltage control, has designed the pid algorithm of constant voltage control on the processor of node, and it is according to the output voltage of the control command control DA passage of the Surveillance center that receives; Frequency with the control frequency converter; The rotating speed of on-the-spot water pump is irrigated in control, thereby the pressure of control irrigation conduit lets system when carrying out dropper or sprinkling irrigation, can change the pressure of pipeline at any time according to the needs of irrigating; The protection pipeline, and guarantee to irrigate the constant of required pressure; The battery valve Control Node receives the switch of the control command rear drive magnetic valve of Surveillance center.In addition, the sum of data acquisition node, Frequency Converter Control node, solenoid control node rises to 254 in theory, the existing extremely strong extended capability of system.
As shown in Figure 2; In the data acquisition node; Aerial temperature and humidity sensor SHT11, intensity of illumination sensor TSL2550D, soil moisture sensor TDR-3 are sent to the information of gathering among the wireless singlechip JN5139 respectively, send to Surveillance center to the information of all collections through on-the-spot aggregation node by JN5139 again.Change slowlyer owing to usually irrigate on-the-spot environmental data, so data acquisition node adopts timing dormancy to send the mode of data, just carries out data acquisition and transmission after having only timing cycle to finish, and all the other times are in resting state.This has greatly just lowered the power consumption of node, if use powered battery can greatly improve battery life.
As shown in Figure 3, the Frequency Converter Control node itself is exactly a closed loop control system of invariable pressure.Frequency converter adopts 380V to exchange the three-phase electricity power supply; The interference that produces for the strong power system that prevents frequency converter; The analog voltage input of frequency converter is received in the DA voltage output of wireless singlechip JN5139 again after linear optocoupler HCNR201 module is isolated amplification, so just can change the frequency of frequency converter through the size that changes DA output; Same various interference in order to prevent that the pipeline water pump from causing, the output of pressure sensor is sent to JN5139 too again after linear optocoupler HCNR201 module is isolated amplification.These jamproof measures have fully guaranteed the stable operation of system.The last pid algorithm program that designs constant voltage control of JN5139.After the JN5139 that Surveillance center sends to this node to the pipeline pressure value of setting went up, JN5139 was according to calculating to such an extent that export after need exporting the DA magnitude of voltage through the relation of pressure that experiment records and DA output valve in advance.After frequency converter and water pump correspondingly got into smooth, pressure sensor fed back to JN5139 to the pipeline pressure value of sampling, and JN5139 is again according to pid algorithm program adjustment DA output, to guarantee the constant of output pressure.
As shown in Figure 4; In the solenoid control node; Because what solid-state relay adopted is the Alternating Current Power Supply of 24V, for preventing the interference of solid-state relay, so adopt optocoupler P521 to isolate between the I/O of microprocessor JN5139 output and the solid-state relay to wireless singlechip JN5139 system.The JN5139 of this node controls the switch of magnetic valve according to the control command of Surveillance center, and periodically gathers the on off state of battery valve, arrives Surveillance center to data upload.
As shown in Figure 5, the wireless singlechip JN5139 in the on-the-spot aggregation node is responsible for setting up and safeguarding and irrigate on-the-spot ZigBee network as the telegon of irrigating on-the-spot ZigBee Star Network, and the information of collecting each node.GTM900 GPRS module communicates through RS232 serial ports and JN5139.After system's operation, GTM900 sets up TCP with Surveillance center at once and is connected.The data that JN5139 sends out the scene of irrigation send to GTM900 through serial ports, and GTM900 sends to Surveillance center to data again.The control command that Surveillance center sends over also is to send to JN5139 through serial ports again through GTM900 earlier, sends to the node that each needs control by JN5139 again.
As shown in Figure 6, the functional module of the monitoring software of Surveillance center comprises that mainly network connection, data show and irrigation control three parts.The major function of network connecting part is to let remote monitoring center set up TCP through the Socket socket with the on-the-spot aggregation node of irrigating the scene be connected.The data display unit major function is to show in real time to irrigate on-the-spot aerial temperature and humidity, illumination, soil moisture and pipeline pressure data, and deposits these data in SQL SERVER 2008 databases in, is convenient to data analysis in the future.Irrigate control section and comprise functions such as timing controlled, parameter control, manually control, Based Intelligent Control and pipeline pressure setting.Timing controlled is meant that system can set the open and close time of magnetic valve in certain day 24 hours and the duration of valve opening solenoid state in advance.Parameter control is meant that system can arrive down open electromagnetic valve in limited time as being set in soil moisture based on the bound automatic switch magnetic valve of the environmental data of irrigating on-the-spot sensor acquisition, closes magnetic valve in limited time in the arrival.Based Intelligent Control is meant that system carries out intelligent irrigation according to the need water model of environmental information, weather forecast information and the crop at scene.
Claims (1)
1. irrigate long distance control system based on the frequency conversion of ZigBee and GPRS; Comprise on-site supervision part and remote monitoring center two parts; It is characterized in that: on-site supervision partly comprises data acquisition node, Frequency Converter Control node, solenoid control node and on-the-spot aggregation node; Wireless ZigBee communication protocol is adopted in the communication of on-site supervision part, and network topology structure is a Star Network; Remote monitoring center is made up of a PC and a monitoring software that connects the Internet network; On-the-spot environmental information is irrigated in the data acquisition node collection; The solenoid control node is gathered the switching information of valve; The Frequency Converter Control node is gathered the pressure information of irrigation conduit; These information all send to on-the-spot aggregation node, and on-the-spot aggregation node sends to remote monitoring center through GPRS network with the mode of ICP/IP protocol again; Remote monitoring center shows the on-the-spot information of irrigating in real time; Send to on-the-spot aggregation node to control instruction with ICP/IP protocol through GPRS network through patterned control interface and send to Frequency Converter Control node and solenoid control node by it again, irrigation is accurately controlled; The VFC node is the closed loop subsystem of a constant voltage control, has designed the pid algorithm of constant voltage control on the processor of node, and it is according to the output voltage of the control command control DA passage of the Surveillance center that receives; Frequency with the control frequency converter; The rotating speed of on-the-spot water pump is irrigated in control, thereby the pressure of control irrigation conduit lets system when carrying out dropper or sprinkling irrigation, can change the pressure of pipeline at any time according to the needs of irrigating; The protection pipeline, and guarantee to irrigate the constant of required pressure; The battery valve Control Node receives the switch of the control command rear drive magnetic valve of Surveillance center;
Data acquisition node comprises JN5139 wireless singlechip, intensity of illumination sensor TSL2550D, aerial temperature and humidity sensor SHT11, soil moisture sensor TDR-3 and antenna; The JN5139 wireless singlechip respectively with intensity of illumination sensor TSL2550D; Aerial temperature and humidity sensor SHT11, soil moisture sensor TDR-3, antenna is connected; TSL2550D and SHT11 are data signal output, can directly link to each other with the I/O mouth of JN5139; The output signal of TDR-3 is the aanalogvoltage of 0-2.5V, is depressured to the AD input of delivering to JN5139 behind the 0-2.0V again;
The Frequency Converter Control node comprises JN5139 wireless singlechip, antenna, a HCNR201 photoelectric isolation module, the 2nd HCNR201 photoelectric isolation module, frequency converter, water pump, pipeline and pressure sensor; Wireless singlechip JN5139 links to each other with antenna; The DA voltage output end of JN5139 is received the analog voltage input of frequency converter again behind linear isolation of the first optocoupler HCNR201 and amplification module, the three-phase voltage output of frequency converter links to each other with the three-phase voltage input of water pump again; Pressure sensor is installed on the irrigation conduit, and the output of pressure sensor is sent to JN5139 again after the linear Isolation Amplifier Module of the second linear optical coupling HCNR201, and this node constitutes the constant voltage RACS of closed loop;
The solenoid control node comprises JN5139 wireless singlechip, antenna, optocoupler P521 Isolation Amplifier Module, solid-state relay and magnetic valve; The JN5139 wireless singlechip links to each other with antenna; The I/O output of JN5139 is connected with solid-state relay after optocoupler P521 Isolation Amplifier Module again, and solid-state relay is connected with the magnetic valve of each irrigation conduit respectively;
On-the-spot aggregation node comprises JN5139 wireless singlechip, GTM900 GPRS module and antenna, the JN5139 wireless singlechip respectively with antenna, GTM900 GPRS module connects, JN5139 and GTM900 GPRS module are to communicate through the RS232 serial ports.
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| CN105075807A (en) * | 2014-05-13 | 2015-11-25 | 天津市安正利网络工程科技有限公司 | Intelligent irrigation system based on Internet of Things |
| CN104381096A (en) * | 2014-12-09 | 2015-03-04 | 武汉大学 | Zigbee network based insertion type wireless irrigation and subsurface water drainage device |
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| CN105580716A (en) * | 2016-02-28 | 2016-05-18 | 山东大学 | Large-area multi-field-piece automatic water-saving irrigation three-level control system and use method thereof |
| CN105867334A (en) * | 2016-05-11 | 2016-08-17 | 华中农业大学 | Intelligent environment parameter control system for watermelons in greenhouse |
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| CN106804391A (en) * | 2017-01-19 | 2017-06-09 | 河北知时新农科技有限公司 | Wireless intelligent irrigation system and method |
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| CN106873656B (en) * | 2017-04-12 | 2018-12-11 | 浙江农林大学暨阳学院 | Gate pumping station controlling system |
| CN107255491A (en) * | 2017-06-14 | 2017-10-17 | 淮阴工学院 | Intelligent irrigated area regimen wireless system based on ZigBee |
| CN108012912A (en) * | 2017-12-15 | 2018-05-11 | 浙江清华长三角研究院 | A kind of nutrient solution adjust automatically cyclic irrigation System and method for based on Internet of Things |
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| US11382285B2 (en) * | 2018-06-27 | 2022-07-12 | Jiangsu University | Wireless interconnection control system and method for improving sprinkler irrigation uniformity of hose reel irrigator with electric drive |
| CN109246647A (en) * | 2018-11-16 | 2019-01-18 | 石河子大学 | A kind of soil moisture content monitoring system based on RFID wireless sensing label |
| CN110999768A (en) * | 2019-12-24 | 2020-04-14 | 贵州航天智慧农业有限公司 | Automatic partitioning constant-pressure method for field rotation irrigation frequency converter |
| CN112352658A (en) * | 2020-11-10 | 2021-02-12 | 广州大学 | Intelligent irrigation control system capable of working synchronously |
| CN113207653A (en) * | 2021-06-04 | 2021-08-06 | 石河子大学 | Automatic drip irrigation accurate water application method and system based on rotation irrigation group |
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