CN109032225B - Greenhouse intelligent control system - Google Patents
Greenhouse intelligent control system Download PDFInfo
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Abstract
The invention provides an intelligent greenhouse control system, which comprises an environment sensing module, a control center, temperature adjusting equipment and dust collecting equipment, wherein the environment sensing module is connected with the input end of the control center; the environment sensing module is used for acquiring indoor environment data through a wireless sensor network and sending the indoor environment data to the control center; and the control center controls the opening and closing of the temperature adjusting equipment and the dust collecting equipment according to the indoor environment data.
Description
Technical Field
The invention relates to the technical field of intelligent control of greenhouses, in particular to an intelligent control system of a greenhouse.
Background
The intelligent automatic control system of the greenhouse has the functions that based on the soil humidity value, the soil temperature, the time, the air temperature, the air humidity, the illumination, the carbon dioxide and the like, a user can set target values of parameters of the intelligent automatic control system, and programs control and monitor states of the electromagnetic valve, the water pump, the fertilization system, the skylight, the side window, the inner sunshade, the outer sunshade, the fan, the wet curtain, the outer turnover window, the heating equipment, the humidifying equipment, the carbon dioxide generator and other equipment according to the target values set by the user so as to ensure that the parameters in the greenhouse are within the target value range set by the user. However, the existing greenhouse is intelligently controlled, so that the user can not conveniently judge the indoor environmental sanitation; meanwhile, indoor dust is not timely treated, and the indoor environment is affected.
Disclosure of Invention
Aiming at the problems, the invention provides an intelligent greenhouse control system.
The purpose of the invention is realized by adopting the following technical scheme:
the intelligent greenhouse control system comprises an environment sensing module, a control center, temperature adjusting equipment and dust collecting equipment, wherein the environment sensing module is connected with the input end of the control center, and the temperature adjusting equipment and the dust collecting equipment are both connected with the output end of the control center; the environment sensing module is used for acquiring indoor environment data through a wireless sensor network and sending the indoor environment data to the control center; and the control center controls the opening and closing of the temperature adjusting equipment and the dust collecting equipment according to the indoor environment data.
In an implementation manner, the environment sensing module comprises a sink node and a plurality of sensor nodes, the plurality of sensor nodes collect indoor environment data, and the sink node collects the indoor environment data of the plurality of sensor nodes and sends the indoor environment data to the control center; each sensor node comprises a dust particle detection sensor and a temperature sensor.
In one implementation manner, the control center comprises a temperature control module and a dust collection control module; the temperature control module controls the temperature adjusting equipment to enable the indoor temperature to reach a set value; and the dust collection control module controls dust collection equipment to clean dust when the indoor dust concentration is higher than a set value.
The invention has the beneficial effects that: the indoor temperature can be detected in real time, and the temperature adjusting equipment is controlled according to the detected data, so that the indoor temperature is stable; the dust collector can timely process indoor air dust and ensure indoor cleanness and sanitation.
Drawings
The invention is further illustrated by means of the attached drawings, but the embodiments in the drawings do not constitute any limitation to the invention, and for a person skilled in the art, other drawings can be obtained on the basis of the following drawings without inventive effort.
FIG. 1 is a block diagram schematically illustrating the structure of an intelligent control device for a greenhouse according to an exemplary embodiment of the present invention;
fig. 2 is a block diagram schematically illustrating the structure of a control center according to an exemplary embodiment of the present invention.
Reference numerals:
the environment monitoring system comprises an environment sensing module 1, a control center 2, a temperature adjusting device 3, a dust collecting device 4, a temperature control module 10 and a dust collecting control module 20.
Detailed Description
The invention is further described with reference to the following examples.
Referring to fig. 1, an embodiment of the present invention provides an intelligent greenhouse control system, including an environment sensing module 1, a control center 2, a temperature adjusting device 3, and a dust collecting device 4, where the environment sensing module 1 is connected to an input end of the control center 2, and both the temperature adjusting device 3 and the dust collecting device 4 are connected to an output end of the control center 2; the environment sensing module 1 is used for acquiring indoor environment data through a wireless sensor network and sending the indoor environment data to the control center 2; and the control center 2 controls the opening and closing of the temperature adjusting equipment 3 and the dust collecting equipment 4 according to the indoor environment data.
In an implementation manner, the environment sensing module 1 includes a sink node and a plurality of sensor nodes, the plurality of sensor nodes collect indoor environment data, and the sink node sinks the indoor environment data of the plurality of sensor nodes and sends the indoor environment data to the control center 2; each sensor node comprises a dust particle detection sensor and a temperature sensor.
In an implementation manner, as shown in fig. 2, the control center 2 includes a temperature control module 10, a dust collection control module 20; the temperature control module 10 controls the temperature adjusting device 3 to make the indoor temperature reach a set value; the dust collection control module 20 controls the dust collection device 4 to perform dust cleaning when the indoor dust concentration is higher than a set value.
The embodiment of the invention can detect the indoor temperature in real time, control the temperature adjusting equipment 3 according to the detected data and ensure the indoor temperature to be stable; the dust collector can timely process indoor air dust and ensure indoor cleanness and sanitation.
In one embodiment, each sensor node acquires neighbor node identification and position information by periodically exchanging information, wherein other sensor nodes in the transmission range of the sensor node are defined as the neighbor nodes.
In one implementation, a sensor node transmits collected indoor environment data to a sink node, including:
(1) the distance between the sensor node and the sink node does not exceed a preset lower distance limit dminWhen the indoor environment data is collected, the sensor node directly transmits the collected indoor environment data to the sink node;
(2) the distance between the sensor node and the sink node exceeds the preset lower distance limit dminDuring the process, the sensor node transmits the collected indoor environment data to the sink node in a multi-hop mode, and the method specifically comprises the following steps:
1) setting a sensor node for collecting indoor environment data as a source node, and determining the total transmission hop number k from the source node to a sink node by the source node:
in the formula (I), the compound is shown in the specification,di,othe distance from the source node i to the sink node,
for the rounding function, represent pairs
Carrying out rounding;
2) a source node generates a data packet, wherein the data packet comprises an identifier of the source node, an indoor environment data packet and a hop counter, an initial value of the hop counter is a total transmission hop determined by the source node, and the indoor environment data packet comprises indoor environment data collected by the source node;
3) the source node randomly selects one neighbor node from the neighbor nodes as a target node of the hop, and sends the data packet to the target node of the hop;
4) after receiving the data packet, the destination node updates the data packet, including: subtracting the value of a hop counter in the data packet by one, and storing the indoor environment data acquired by the indoor environment counter into an indoor environment data packet in the data packet;
5) taking the destination node as a source node of the next hop, repeating the steps 3) and 4) until the value of a hop counter in the data packet received by the destination node is 1; and the destination node with the value of the hop counter in the received data packet being 1 stores the indoor environment data acquired by the destination node into the indoor environment data packet in the data packet, and then directly sends the indoor environment data packet to the sink node.
The embodiment provides a routing mechanism for transmitting collected indoor environment data to a sink node in a multi-hop mode by a sensor node, wherein the routing mechanism determines the total hop number for transmitting the indoor environment data according to the distance from a source node to the sink node, and determines a destination node of the next hop based on a random walk mode. The routing mechanism is used for multi-hop transmission of indoor environment data, is simple and convenient, can limit the length of a transmission path, and avoids unnecessary energy consumption caused by overlong path due to a random walk mode.
In one implementation, the source is a digital signalThe distance between the node and the destination node does not exceed the lower limit d of the cooperation distancex-minWhen the data packet is received, the source node directly sends the data packet to the destination node of the hop; if the distance between the source node and the destination node exceeds the lower limit d of the cooperation distancex-minAnd if the energy consumption of the direct data packet transmission mode is the lowest, the source node directly sends the data packet to the target node of the hop, otherwise, the source node sends the data packet to the target node of the hop in a cooperative data packet transmission mode.
In an implementation manner, when the source node sends the data packet to the destination node of the hop, the lower limit d of the cooperation distance is calculated according to the following formulax-min：
In the formula, U is the area of a monitoring area, N is the number of sensor nodes in the network, and R is the transmission radius of a source node;
in this embodiment, a specific transmission mechanism for transmitting a data packet to a destination node by a source node is set, wherein a distance from the source node to the destination node is compared with a lower limit of a cooperation distance, when the distance is greater than the lower limit of the cooperation distance, energy consumption of a direct data packet transmission mode and energy consumption of a cooperative data packet transmission mode are compared, and a transmission mode with the lowest energy consumption is always selected for transmitting the data packet. Compared with a mode of transmitting data packets through a single transmission mode, the method and the device can better ensure the reliability of data packet transmission, and compared with a mode of transmitting data packets only through a cooperative transmission mode, the method and the device can further reduce the energy consumption of indoor environment data transmission because the transmission mode with the lowest energy consumption is always selected for transmitting the data packets; the embodiment further provides a calculation formula of the lower limit of the cooperation distance, and the determination of the lower limit of the cooperation distance is closer to the actual situation compared with a mode of subjectively presetting a threshold.
In an implementation mode, after acquiring the identification and position information of the neighbor nodes, the source node calculates the weight of each neighbor node, and sorts the neighbor node lists according to the sequence of the weights from large to small to construct the neighbor node list; the source node sends the data packet to the destination node of the hop in a cooperative data packet transmission mode, and the following steps are specifically executed: the source node broadcasts a cooperation message to the first 3 neighbor nodes of the neighbor node list, the first 3 neighbor nodes feed back a cooperation confirmation message to the source node after receiving the cooperation message, the source node selects the neighbor node which firstly feeds back the cooperation confirmation message as a cooperation node, a data packet is sent to the cooperation node, and the cooperation node sends the data packet to a target node of the hop; the calculation formula of the weight is as follows:
in the formula, ωijThe weight of the jth neighbor node of the source node i, EjIs the current residual energy of the jth neighbor node, EminTo preset minimum energy values, di,jIs the distance, lambda, of the source node i from its j-th neighbor node1Is a predetermined energy weight factor, λ2Is a preset distance weighting factor.
In this embodiment, a weight calculation formula of the neighbor node is set, and it can be known from the calculation formula that the neighbor node with more residual energy and greater position advantage has a greater weight. The source node arranges all the neighbor nodes in advance according to the sequence of the weights from large to small, so that the time waste caused by the calculation of the weights in the stage of transmitting indoor environment data is avoided; in the embodiment, the source node broadcasts the cooperation message to the first 3 neighboring nodes in the neighboring node list, the first 3 neighboring nodes receive the cooperation message and then feed back the cooperation confirmation message to the source node, the source node selects the neighboring node which firstly feeds back the cooperation confirmation message as the cooperation node, and sends the data packet to the cooperation node, so that the selected cooperation node can be effectively ensured to reliably complete the task of cooperatively transmitting the indoor environmental data, and the method is more beneficial to saving the energy consumption of cooperatively transmitting the indoor environmental data compared with the method of randomly selecting the cooperation node.
Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention, and not for limiting the protection scope of the present invention, although the present invention is described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions can be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention.
Claims (2)
1. The intelligent greenhouse control system is characterized by comprising an environment sensing module, a control center, temperature adjusting equipment and dust collecting equipment, wherein the environment sensing module is connected with the input end of the control center, and the temperature adjusting equipment and the dust collecting equipment are both connected with the output end of the control center; the environment sensing module is used for acquiring indoor environment data through a wireless sensor network and sending the indoor environment data to the control center; the control center controls the opening and closing of the temperature adjusting equipment and the dust collecting equipment according to the indoor environment data; the environment sensing module comprises a sink node and a plurality of sensor nodes, the plurality of sensor nodes collect indoor environment data, and the sink node collects the indoor environment data of the plurality of sensor nodes and sends the indoor environment data to the control center; each sensor node comprises a dust detection sensor and a temperature sensor; sensor node transmits the indoor environmental data who gathers to the sink node, includes:
(1) the distance between the sensor node and the sink node does not exceed a preset lower distance limit dminWhen the indoor environment data is collected, the sensor node directly transmits the collected indoor environment data to the sink node;
(2) the distance between the sensor node and the sink node exceeds the preset lower distance limit dminThe sensor node transmits the collected indoor environment data to the sink node in a multi-hop mode;
the sensor node transmits the collected indoor environment data to the sink node in a multi-hop mode, and specifically comprises the following steps:
1) setting a sensor node for collecting indoor environment data as a source node, and determining the total transmission hop number k from the source node to a sink node by the source node:
in the formula (d)i,oThe distance from the source node i to the sink node,
for the rounding function, represent pairs
Carrying out rounding;
2) a source node generates a data packet, wherein the data packet comprises an identifier of the source node, an indoor environment data packet and a hop counter, an initial value of the hop counter is a total transmission hop determined by the source node, and the indoor environment data packet comprises indoor environment data collected by the source node;
3) the source node randomly selects one neighbor node from the neighbor nodes as a target node of the hop, and sends the data packet to the target node of the hop;
4) after receiving the data packet, the destination node updates the data packet, including: subtracting the value of a hop counter in the data packet by one, and storing the indoor environment data acquired by the indoor environment counter into an indoor environment data packet in the data packet;
5) taking the destination node as a source node of the next hop, repeating the steps 3) and 4) until the value of a hop counter in the data packet received by the destination node is 1; the method comprises the steps that a destination node with the value of a hop counter being 1 in a received data packet stores indoor environment data collected by the destination node into an indoor environment data packet in the data packet, and then directly sends the indoor environment data packet to a sink node;
if the distance between the source node and the destination node does not exceed the lower limit d of the cooperation distancex-minWhen the data packet is received, the source node directly sends the data packet to the destination node of the hop; if the distance between the source node and the destination node exceeds the lower limit d of the cooperation distancex-minAnd comparing the energy consumption of the mode of directly transmitting the data packet with the energy consumption of the mode of cooperatively transmitting the data packet by the source node, and if the energy consumption of the mode of directly transmitting the data packet is the lowest, directly transmitting the data packet to the target node of the hop by the source nodeOtherwise, sending the data packet to the destination node of the hop in a cooperative data packet transmission mode; the source node calculates the lower limit d of the cooperation distance according to the following formulax-min：
In the formula, U is the area of a monitoring area, N is the number of sensor nodes in the network, and R is the transmission radius of a source node;
if the distance between the source node and the destination node does not exceed the lower limit d of the cooperation distancex-minWhen the data packet is received, the source node directly sends the data packet to the destination node of the hop; if the distance between the source node and the destination node exceeds the lower limit d of the cooperation distancex-minAnd if the energy consumption of the direct data packet transmission mode is the lowest, the source node directly sends the data packet to the target node of the hop, otherwise, the source node sends the data packet to the target node of the hop in a cooperative data packet transmission mode.
2. The intelligent greenhouse control system as claimed in claim 1, wherein the control center comprises a temperature control module and a dust collection control module; the temperature control module controls the temperature adjusting equipment to enable the indoor temperature to reach a set value; and the dust collection control module controls dust collection equipment to clean dust when the indoor dust concentration is higher than a set value.
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