CN101969613A - Wireless sensor network-based greenhouse group control system and control method thereof - Google Patents
Wireless sensor network-based greenhouse group control system and control method thereof Download PDFInfo
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- CN101969613A CN101969613A CN2010102582511A CN201010258251A CN101969613A CN 101969613 A CN101969613 A CN 101969613A CN 2010102582511 A CN2010102582511 A CN 2010102582511A CN 201010258251 A CN201010258251 A CN 201010258251A CN 101969613 A CN101969613 A CN 101969613A
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Abstract
The invention discloses a wireless sensor network-based greenhouse group control system and a control method thereof. Each greenhouse is provided with a plurality of wireless sensor nodes and a cluster head node for acquiring environmental factors of the greenhouses according to needs, wherein the wireless sensor nodes and the cluster head nodes autonomously form wireless sensor networks by wireless communication; the wireless sensor nodes transmit monitoring data to the corresponding cluster head nodes in a multi-hop way; the cluster head nodes transmit the data to a gateway node which uploads the data to a communication server; the communication server performs two-way communication with a control computer; and the control computer makes corresponding guidance schemes according to the data monitored by the wireless sensor networks in real time, and synchronously transmits control instructions to the wireless sensor networks according to the guidance schemes. In the system and the method, the real-time data monitored by each sensor node in the greenhouses can be timely and accurately acquired, and the control instructions can be fast transmitted to the sensor nodes after specific production guidance is made or early-warning setting is performed according to the monitoring data.
Description
Technical field
The present invention relates to field of agricultural production technologies, especially relate to a kind of greenhouse group's wireless sensor network control system and control method thereof.
Background technology
The greenhouse is the facility that utilizes the culture, implements high yield and efficient modern agricultural production mode by the technological means that can regulate and control.It is an external environment condition that changes the plant growth, creates optimum condition for growth and development of plants, and avoids extraneous four seasons variation and harsh weather to its place of growing and exerting an influence.Heliogreenhouse is the industrialized agriculture that China's reform and opening-up back large tracts of land fast development is got up, and has now become the important content that agricultural structure is adjusted.At present, greenhouse control mainly contains the computer control system based on single-chip microcomputer, Industrial Control Computer or Programmable Logic Controller.Though SCM Based control system is cheap, simple to operate, its shortcoming is that system flexibility is poor, wiring is complicated, is difficult to safeguard and expansion.It is complicated to exist wiring equally based on the system of Industrial Control Computer, the problem that is difficult to safeguard, and also Industrial Control Computer and corresponding configuration software all need to buy, and cost is higher.System based on Programmable Logic Controller has stronger flexibility, Programmable Logic Controller has various configuration functions of modules, field bus technique by the advanced person, can realize the networked distributed control in a plurality of equipment, a plurality of greenhouses, also can insert the Internet simultaneously, and control algolithm is optimized and generates, its shortcoming is that investment is big, peasant household is difficult to accept.
Summary of the invention
In order to overcome prior art systems wiring cost height, inconvenient deficiency to be installed, the invention provides a kind of greenhouse group control system based on wireless sensor network, it is reasonable in design and easy to use.
The technical solution adopted for the present invention to solve the technical problems is: comprise a plurality of wireless sensor networks, the communication server, gateway node and a control computer.Each greenhouse among the greenhouse group is installed a plurality of wireless sensor nodes and a leader cluster node according to demand, can gather greenhouse environment factor multi-facetedly, wireless sensor node and leader cluster node independently form wireless sensor network by radio communication, wireless sensor node sends to leader cluster node with Monitoring Data in the multi-hop mode, by leader cluster node with transfer of data to gateway node, be uploaded to the communication server by gateway node.The communication server and control are carried out two-way communication between the computer, and the control computer is made corresponding guidance program according to the real-time institute of wireless sensor network Monitoring Data, according to guidance program synchronously to the wireless sensor network sending controling instruction.Native system need not wiring, and cost is lower, and is convenient for installation and maintenance.Compare with prior wireless network such as WiFi, have networking voluntarily, need not manual configuration, and support the multi-hop route, can be applied to bigger heliogreenhouse environment.
Described sensor node is mainly monitored atmospheric temperature, atmospheric humidity, the soil moisture, soil moisture, gas concentration lwevel and six kinds of envirment factors of intensity of illumination of inside, greenhouse.
The present invention also comprises a gsm wireless communication module of joining with the communication server, will be sent to peasant household's mobile phone through early warning short message or the Monitoring Data short message behind communication server encapsulation and the coding.
The present invention also provides a kind of control method of said system, may further comprise the steps:
Step 1, open and be laid in all the sensors node in each greenhouse among the greenhouse group, and make all the sensors node all be in listen mode;
Step 2, open gateway node, the all the sensors node enters negotiation phase, gateway node sends data collection cycle in the mode of broadcast to all the sensors node, in the information broadcast process, sensor node is set up neighbor table, independently forms network, and sets up route, sensor node is that unit organization becomes a plurality of wireless sensor networks with bunch head simultaneously, and sends feedback information to gateway node synchronously;
After step 3, gateway node received the feedback information of all the sensors node, negotiation phase finished, and working stage is closed and entered to gateway node notice all the sensors node;
Step 4, enter working stage after, all the sensors node is regularly waken up and is carried out data acquisition all according to the determined data collection cycle of negotiation phase, and gives separately leader cluster node with the corresponding Monitoring Data synchronized transmission gathered; The Monitoring Data that each sensor node was gathered in bunch head was collected bunch and to all collected Monitoring Data packings is committed to gateway node; After gateway node receives the Monitoring Data of described all the sensors node, reinform described all the sensors node and close, enter next data collection cycle;
Step 5, gateway node are sent to the communication server with the Monitoring Data of all the sensors node, and the communication server unpacks data, and deposit database in for user or expert system inquiry;
Step 6, expert system are analyzed all Monitoring Data that deposit database in according to the chamber crop growth model, specifically according to the concrete crop in greenhouse in different growing stages to moisture content, temperature, humidity and CO
2Concentration needs, and makes and whether pours water, lowers the temperature or heat, increases CO
2The corresponding guidance program of concentration, expert system sends operation instruction information and/or early warning information by the communication server to wireless sensor network.
After the communication server described in the step 5 receives the Monitoring Data of all the sensors node, the Monitoring Data received after encapsulation and encoding process, is ceased to peasant household's mobile phone transmitting supervisory data SMS by the gsm wireless communication module.
After the communication server described in the step 6 is received early-warning conditions management information that expert system sends and wireless sensor network is carried out corresponding early warning and be provided with, when real-time Monitoring Data reached the threshold value that early-warning conditions management information sets, the early warning short message of the communication server after with early warning information encapsulation and coding was sent to peasant household's mobile phone by the gsm wireless communication module.
When the expert system described in the step 6 sends operation instruction information or early-warning conditions management information to wireless sensor network, expert system sends to the communication server with setting measurement parameter control command earlier, send to gateway node by the communication server again, gateway node is notified all the sensors node in the mode of broadcast again, and activates all buttoned-up sensor nodes.
The invention has the beneficial effects as follows: 1, reasonable in design and use easy and simple to handle, practical.2, can guarantee effectively that the efficient information between the wireless sensor network and the communication server transmits, can realize that control information and wireless sensor network detect the unobstructed circulation of data message, thereby can in time, accurately obtain the real time data that each sensor node is monitored in the greenhouse to greatest extent, and according to after detecting data and making concrete operation instruction suggestion or early warning and be provided with, can at a high speed control command be sent to sensor node, thereby significantly improve the yield and quality of crops.
The present invention is further described below in conjunction with drawings and Examples.
Description of drawings
Fig. 1 is the circuit block diagram of the used greenhouse of the present invention group's wireless sensor network control system;
Among the figure, the 1-wireless sensor network; The 2-gateway node; The 3-communication server; The 4-expert system; 5-bunch of head; The 6-general sensor nodes; 7 one greenhouses; 8 one gsm wireless communication modules; 9-peasant household mobile phone.
Fig. 2 is the FB(flow block) of greenhouse of the present invention group's wireless sensor network control method.
Embodiment
Device embodiment:
As shown in Figure 1, the used greenhouse of the present invention group's wireless sensor network control system comprises a plurality of wireless sensor networks 1 of being made up of a plurality of sensor nodes that are laid among the greenhouse group in each greenhouse 7, the communication server 3, is uploaded to the gateway node 2 of the communication server 3 after will 1 Monitoring Data packing of wireless sensor network, and makes corresponding guidance program and the synchronous in case of necessity expert system 4 to wireless sensor network 1 transmission operation instruction information and/or early-warning conditions management information according to wireless sensor network 1 real-time institute Monitoring Data.Described wireless sensor network 1 carries out two-way communication by being that a plurality of sensor node tissues of unit form with bunches 5 between the described communication server 3 and the expert system 4.Described bunch 5 is super node or upper layer node, it is relative general sensor nodes 6, described bunch the 5 a plurality of general sensor nodes 6 composition-wireless sensor networks 1 with its subordinate, after described a plurality of general sensor nodes 6 obtains Monitoring Data, all pass to bunch 5, carry out integral body by all the sensors node institute Monitoring Data in described bunch 5 pairs bunches and collect.
The quantity of the group medium temperature chamber of greenhouse described in the present embodiment 7 is 6.Described sensor node comprises six kinds of sensor nodes that the atmospheric temperature of 7 inside, greenhouse, atmospheric humidity, the soil moisture, soil moisture, gas concentration lwevel and six kinds of envirment factors of intensity of illumination are monitored.
Method embodiment may further comprise the steps:
Step 1, open and be laid in all the sensors node in each greenhouse among the greenhouse group, and make described all the sensors node all be in listen mode.
Step 2, open gateway node 2, described all the sensors node enters negotiation phase, and gateway node 2 sends data collection cycle in the mode of broadcast to described all the sensors node; Simultaneously setting up route on gateway node 2, be that unit organization becomes a plurality of wireless sensor networks 1 with described all the sensors node with bunches 5, and described all the sensors node is synchronously to the gateway node 2 feedbacks determined data collection cycle of negotiation of respectively hanging oneself.
After step 3, gateway node 2 received the feedback information of described all the sensors node, negotiation phase finished, and gateway node 2 notifies described all the sensors node to close and enter working stage.
Step 4, enter working stage after, described all the sensors node is regularly waken up and is carried out data acquisition all according to the determined data collection cycle of negotiation phase, and with the corresponding Monitoring Data synchronized transmission gathered give separately bunches 5 be upper layer node; Bunches 5 collect bunch in each sensor node Monitoring Data of gathering and all collected Monitoring Data are carried out preliminary treatment after, be committed to gateway node 2; After gateway node 2 receives the Monitoring Data of described all the sensors node, reinform described all the sensors node and close, enter next data collection cycle.
After step 5, gateway node 2 receive the Monitoring Data of described all the sensors node, be sent to the communication server 3 and resolve and deposit in database for user or expert system 4 inquiries.Agricultural service center can fetch data from described database read at any time, checks for agricultural experts.
After the communication server 3 described in this step receives the Monitoring Data of described all the sensors node, the Monitoring Data received after encapsulation and encoding process, is ceased to peasant household's mobile phone 9 transmitting supervisory data SMSs by gsm wireless communication module 8.
After all Monitoring Data that step 6,4 pairs of expert systems deposit database in are carried out internal analysis and are handled, make corresponding guidance program, expert system 4 sends operation instruction information and/or early-warning conditions management information by the communication server 3 to wireless sensor network 1 in case of necessity.The described expert system 4 corresponding guidance programs of making can correspondingly send to peasant household by the communication server 3.
When described expert system 4 sends operation instruction information and/or early warning information to wireless sensor network 1, expert system 4 sends to the communication server 3 with setting measurement parameter control command earlier, send to gateway node 2 by the communication server 3 again, gateway node 2 is notified described all the sensors node in the mode of broadcast again, and activates the described all the sensors node of closing.
After the communication server 3 described in this step is received early-warning conditions management information that expert system 4 sends and wireless sensor network 1 is carried out corresponding early warning and be provided with, when the real-time Monitoring Data of correspondence reached the threshold value that early-warning conditions management information sets, the early warning short message of the communication server 3 after with early warning information encapsulation and coding was sent to peasant household's mobile phone 9 by gsm wireless communication module 8.
Claims (7)
1. greenhouse group's wireless sensor network control system, comprise a plurality of wireless sensor networks, a communication server, gateway node and control computer, it is characterized in that: each greenhouse among the greenhouse group is installed a plurality of wireless sensor nodes and a leader cluster node according to demand, gather greenhouse environment factor, wireless sensor node and leader cluster node independently form wireless sensor network by radio communication, wireless sensor node sends to leader cluster node with Monitoring Data in the multi-hop mode, by leader cluster node with transfer of data to gateway node, be uploaded to the communication server by gateway node; The communication server and control are carried out two-way communication between the computer, and the control computer is made corresponding guidance program according to the real-time institute of wireless sensor network Monitoring Data, according to guidance program synchronously to the wireless sensor network sending controling instruction.
2. greenhouse according to claim 1 group's wireless sensor network control system is characterized in that: atmospheric temperature, atmospheric humidity, the soil moisture, soil moisture, gas concentration lwevel and six kinds of envirment factors of intensity of illumination of described sensor node monitoring inside, greenhouse.
3. greenhouse according to claim 1 group's wireless sensor network control system, it is characterized in that: also comprise a gsm wireless communication module of joining, will be sent to peasant household's mobile phone through early warning short message or the Monitoring Data short message behind communication server encapsulation and the coding with the communication server.
4. the control method of the described device of claim 1 is characterized in that comprising the steps:
Step 1, open and be laid in all the sensors node in each greenhouse among the greenhouse group, and make all the sensors node all be in listen mode;
Step 2, open gateway node, the all the sensors node enters negotiation phase, gateway node sends data collection cycle in the mode of broadcast to all the sensors node, in the information broadcast process, sensor node is set up neighbor table, independently forms network, and sets up route, sensor node is that unit organization becomes a plurality of wireless sensor networks with bunch head simultaneously, and sends feedback information to gateway node synchronously;
After step 3, gateway node received the feedback information of all the sensors node, negotiation phase finished, and working stage is closed and entered to gateway node notice all the sensors node;
Step 4, enter working stage after, all the sensors node is regularly waken up and is carried out data acquisition all according to the determined data collection cycle of negotiation phase, and gives separately leader cluster node with the corresponding Monitoring Data synchronized transmission gathered; The Monitoring Data that each sensor node was gathered in bunch head was collected bunch and to all collected Monitoring Data packings is committed to gateway node; After gateway node receives the Monitoring Data of described all the sensors node, reinform described all the sensors node and close, enter next data collection cycle;
Step 5, gateway node are sent to the communication server with the Monitoring Data of all the sensors node, and the communication server unpacks data, and deposit database in for user or expert system inquiry;
Step 6, expert system are analyzed all Monitoring Data that deposit database in according to the chamber crop growth model, specifically according to the concrete crop in greenhouse in different growing stages to moisture content, temperature, humidity and CO
2Concentration needs, and makes and whether pours water, lowers the temperature or heat, increases CO
2The corresponding guidance program of concentration, expert system sends operation instruction information and/or early warning information by the communication server to wireless sensor network.
5. greenhouse according to claim 4 group's wireless sensor network control method, it is characterized in that: after the communication server described in the step 5 receives the Monitoring Data of all the sensors node, the Monitoring Data received after encapsulation and encoding process, is ceased to peasant household's mobile phone transmitting supervisory data SMS by the gsm wireless communication module.
6. greenhouse according to claim 4 group's wireless sensor network control method, it is characterized in that: after the communication server described in the step 6 is received early-warning conditions management information that expert system sends and wireless sensor network carried out corresponding early warning and be provided with, when real-time Monitoring Data reached the threshold value that early-warning conditions management information sets, the early warning short message of the communication server after with early warning information encapsulation and coding was sent to peasant household's mobile phone by the gsm wireless communication module.
7. greenhouse according to claim 4 group's wireless sensor network control method, it is characterized in that: when the expert system described in the step 6 sends operation instruction information or early-warning conditions management information to wireless sensor network, expert system sends to the communication server with setting measurement parameter control command earlier, send to gateway node by the communication server again, gateway node is notified all the sensors node in the mode of broadcast again, and activates all buttoned-up sensor nodes.
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