CN109213242B - Intelligent home temperature and humidity real-time control system - Google Patents
Intelligent home temperature and humidity real-time control system Download PDFInfo
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Abstract
The invention provides an intelligent home temperature and humidity real-time control system which comprises a data acquisition subsystem, a temperature adjusting device, a dehumidifying device and a temperature and humidity control center, wherein the data acquisition subsystem, the temperature adjusting device and the dehumidifying device are all connected with the temperature and humidity control center; the data acquisition subsystem is configured to monitor indoor temperature and humidity in real time, acquire indoor temperature and humidity data and send the indoor temperature and humidity data to the temperature and humidity control center; the temperature and humidity control center is configured to analyze and process the received indoor temperature and humidity data, generate a corresponding control instruction, and control the operation of the temperature adjusting equipment and the dehumidifying equipment according to the control instruction; the data acquisition subsystem is including deploying single aggregation node, a plurality of sensor node in the monitoring area, and sensor node gathers indoor humiture data and sends indoor humiture data to aggregation node, and then sends indoor humiture data to the atmospheric control center by aggregation node.
Description
Technical Field
The invention relates to the field of intelligent home furnishing, in particular to an intelligent home furnishing temperature and humidity real-time control system.
Background
Along with the improvement of the requirements of people on the comfortable health of the home, the concept of the smart home is gradually proposed and accepted, the smart home generally utilizes the advanced computer network communication technology, the comprehensive wiring technology and the human engineering principle, the individual requirements are integrated, all subsystems related to the home life are organically combined together, the brand-new home life experience is realized through comprehensive intelligent control and management, the refrigeration and heating in the current home life are a big thing, the great influence is brought to the living comfort of people, however, the refrigeration and heating need to be adjusted in real time according to the feeling of the human body, the ordinary collective heating and air-conditioning refrigeration have great limitations, and the temperature and the humidity can not be adjusted in time.
Disclosure of Invention
Aiming at the problems, the invention provides an intelligent home temperature and humidity real-time control system.
The purpose of the invention is realized by adopting the following technical scheme:
the intelligent home temperature and humidity real-time control system comprises a data acquisition subsystem, a temperature adjusting device, a dehumidifying device and a temperature and humidity control center, wherein the data acquisition subsystem, the temperature adjusting device and the dehumidifying device are all connected with the temperature and humidity control center; the data acquisition subsystem is configured to monitor indoor temperature and humidity in real time, acquire indoor temperature and humidity data and send the indoor temperature and humidity data to the temperature and humidity control center; the temperature and humidity control center is configured to analyze and process the received indoor temperature and humidity data, generate a corresponding control instruction, and control the operation of the temperature adjusting equipment and the dehumidifying equipment according to the control instruction; the data acquisition subsystem is including deploying single aggregation node, a plurality of sensor node in the monitoring area, and sensor node gathers indoor humiture data and sends indoor humiture data to aggregation node, and then sends indoor humiture data to the atmospheric control center by aggregation node.
In a mode that can realize, the atmospheric control center include processing module, temperature regulation control module, dehumidification control module, wherein temperature regulation control module, dehumidification control module's input all is connected with processing module, temperature regulation control module's output and tempering equipment are connected, dehumidification control module's output and dehumidification equipment are connected.
The invention has the beneficial effects that: indoor temperature and humidity data acquisition is carried out by utilizing a wireless sensor network technology, so that the trouble of wiring is avoided, and the intelligent and quick effects are achieved; through carrying out analysis processes to the indoor humiture data of gathering, according to the operation of indoor humiture data control thermoregulation device and dehumidification equipment, realize the real-time regulation of house temperature and humidity, let the people just can enjoy comfortable environment when arriving home, simple structure, the practicality is strong.
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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 schematic block diagram of a real-time temperature and humidity control system of an intelligent home according to an exemplary embodiment of the present invention;
fig. 2 is a block diagram schematically illustrating a structure of a temperature and humidity control center according to an exemplary embodiment of the present invention.
Reference numerals:
the system comprises a data acquisition subsystem 1, a temperature adjusting device 2, a dehumidifying device 3, a temperature and humidity control center 4, a processing module 10, a temperature adjusting control module 20 and a dehumidifying control module 30.
Detailed Description
The invention is further described with reference to the following examples.
Fig. 1 is a schematic block diagram of a real-time temperature and humidity control system of an intelligent home according to an embodiment of the invention. Referring to fig. 1, the intelligent home temperature and humidity real-time control system provided by this embodiment includes a data acquisition subsystem 1, a temperature adjustment device 2, a dehumidification device 3, and a temperature and humidity control center 4, wherein the data acquisition subsystem 1, the temperature adjustment device 2, and the dehumidification device 3 are all connected with the temperature and humidity control center 4.
The data acquisition subsystem 1 is configured to monitor indoor temperature and humidity in real time, acquire indoor temperature and humidity data and send the data to the temperature and humidity control center 4.
The data acquisition subsystem 1 is including deploying single aggregation node, a plurality of sensor node in the monitoring area, and sensor node gathers indoor humiture data and sends indoor humiture data to aggregation node, and then sends indoor humiture data to temperature and humidity control center 4 by aggregation node.
The embodiment utilizes the wireless sensor network technology to collect indoor temperature and humidity data, avoids wiring and is simple to implement.
The sensor node comprises an acquisition unit, an analysis processing unit and a communication unit; the acquisition unit is completed by a sensor and an analog-to-digital converter, the analysis processing unit is completed by a microprocessor and a memory, and the communication unit is completed by a wireless transceiver. Wherein, the sensor is a temperature sensor and/or a humidity sensor.
The temperature and humidity control center 4 is configured to analyze and process the received indoor temperature and humidity data, generate a corresponding control instruction, and control the operation of the temperature adjusting device 2 and the dehumidifying device 3 according to the control instruction.
In an implementation manner, as shown in fig. 2, the temperature and humidity control center 4 includes a processing module 10, a temperature adjustment control module 20, and a dehumidification control module 30, wherein the input ends of the temperature adjustment control module 20 and the dehumidification control module 30 are both connected to the processing module 10, the output end of the temperature adjustment control module 20 is connected to the temperature adjustment device 2, and the output end of the dehumidification control module 30 is connected to the dehumidification device 3.
The processing module 10 analyzes and processes the received indoor temperature and humidity data, compares the received indoor temperature and humidity data with a preset index, generates a control instruction according to a comparison result, and sends the control instruction to the temperature adjusting control module 20 and the dehumidifying control module 30, so that the temperature adjusting control module 20 and the dehumidifying control module 30 control the operation of the temperature adjusting device 2 and the dehumidifying device 3.
Optionally, a control instruction is generated according to the comparison result, for example, when the indoor temperature acquired by the data acquisition subsystem 1 exceeds a preset data threshold upper limit, the processing module 10 sends a control instruction for lowering the temperature to the temperature regulation control module 20, and then the temperature regulation control module 20 controls the temperature regulation device 2 to supply the cold source according to the control instruction, so as to control the indoor temperature within a suitable range. And when the indoor temperature collected by the data collection subsystem 1 is lower than the preset data threshold, the processing module 10 sends a control instruction for increasing the temperature to the temperature regulation control module 20, and then the temperature regulation control module 20 controls the temperature regulation device 2 to provide the heat source according to the control instruction.
Optionally, the temperature adjustment device 2 is connected to a ground source heat pump, the ground source heat pump provides a heat source and a cold source, and the temperature adjustment control module 20 can control the temperature adjustment device 2 to adjust the ground source heat pump to provide the heat source or the cold source according to the control instruction, so as to control the indoor temperature within a proper range. In another alternative, the temperature adjustment device 2 is an air conditioner, and the temperature adjustment control module 20 may control the temperature adjustment device 2 to deliver a cold source or a heat source according to the control instruction.
Similarly, the dehumidification control module 30 controls the on/off of the dehumidification device 3 to achieve dehumidification or not.
According to the embodiment of the invention, the wireless sensor network technology is utilized to collect indoor temperature and humidity data, so that the trouble of wiring is avoided, and the intelligent and quick effects are achieved; through carrying out analysis processes to the indoor humiture data of gathering, according to the operation of indoor humiture data control thermoregulation device and dehumidification equipment, realize the regulation of house temperature and humidity, let the people just can enjoy comfortable environment when arriving home, simple structure, the practicality is strong.
In one embodiment, the communication distance of each sensor node is preset, when a network is initialized, the sensor nodes are divided into a plurality of clusters through a clustering routing protocol, each cluster comprises a cluster head node and a plurality of sensor nodes, and the cluster head nodes collect indoor temperature and humidity data collected by each sensor node in the cluster and send the indoor temperature and humidity data to a sink node.
Preferably, the clustering routing protocol is a LEACH-based routing protocol.
In a mode that can realize, cluster head node sends the indoor humiture data who collects to the sink node, specifically includes:
(1) the cluster head node acquires neighbor cluster head node information through information interaction with other cluster head nodes, determines neighbor cluster head nodes which are closer to the sink node according to the neighbor cluster head node information, and constructs a candidate relay node list by taking the determined neighbor cluster head nodes which are closer to the sink node as candidate relay nodes;
(2) the cluster head node selects one alternative relay node from the alternative relay node list as a relay node;
(3) the cluster head node calculates a sending distance according to self energy and carries out periodic updating, when the distance from the cluster head node to the sink node does not exceed the current sending distance, the cluster head node directly sends the collected indoor temperature and humidity data to the sink node, and when the distance from the cluster head node to the sink node exceeds the current sending distance, the cluster head node directly sends the collected indoor temperature and humidity data to the selected relay node, wherein the calculation formula of the sending distance is as follows:
in the formula, HITransmitting distance, D, for cluster head node IIIs the current remaining energy of cluster head node I, DI0Is the initial energy of cluster head node I, YIThe communication distance of the cluster head node I is represented by C which is a preset energy-based attenuation factor, and the value range of C is [0.4,0.6]]。
In this embodiment, a calculation formula of the transmission distance is set based on the energy of the cluster head node, and a better measurement standard is provided for the routing mode selection of the cluster head node for transmitting the indoor temperature and humidity data innovatively, that is, when the distance from the cluster head node to the sink node does not exceed the current transmission distance, the cluster head node directly transmits the collected indoor temperature and humidity data to the sink node, and when the distance from the cluster head node to the sink node exceeds the current transmission distance, the cluster head node directly transmits the collected indoor temperature and humidity data to the selected relay node. The cluster head nodes select a proper routing mode based on the sending distance, energy consumption of the cluster head nodes for sending indoor temperature and humidity data is reduced, failure of the cluster head nodes due to rapid energy consumption is avoided, and routing stability in the wireless sensor network is guaranteed.
In an implementation manner, selecting, by a cluster head node, one candidate relay node from a candidate relay node list as a relay node includes:
(1) the cluster head node sends election messages to all the alternative relay nodes, the alternative relay nodes receiving the election messages calculate own forwarding weights and send the forwarding weights to the cluster head node, wherein the election messages comprise position information of the cluster head node and the trust degree of the cluster head node to all the alternative relay nodes;
the calculation formula of the forwarding weight is as follows:
in the formula, aIJThe forwarding weight, D, of the J-th candidate relay node representing cluster head node IIJIs the current residual energy, R, of the J-th candidate relay nodeIJThe number of indoor temperature and humidity data packets in the cache list of the J-th candidate relay node is DUFor the preset energy consumed for forwarding an indoor temperature and humidity data packet, H (I, o) is the distance from a cluster head node I to a sink node, H (J, o) is the distance from the J-th standby relay node to the sink node, and UIJThe credibility of the cluster head node I to the J-th alternative relay node is set as 1 initially; e.g. of the type1、e2、e3Is a set weight coefficient;
(2) and the cluster head node sequences all the alternative relay nodes according to the sequence of the forwarding weight values from large to small, and selects the alternative relay node with the highest sequence as the relay node.
In this embodiment, an index of the forwarding weight is set, and according to a calculation formula of the forwarding weight, it can be known that the larger the current residual energy is, the better the position advantage is, and the larger the forwarding weight is for the candidate relay node that is more trusted by the cluster head node. In this embodiment, the cluster head node selects the candidate relay node with the largest forwarding weight as the relay node from the candidate relay node list, which is favorable for ensuring the forwarding of indoor temperature and humidity data, saving the energy consumption for forwarding the indoor temperature and humidity data, balancing the energy consumption of each relay node, and further favorable for prolonging the service life of the wireless sensor network.
In an implementation manner, a cluster head node updates the trust level of a relay node every other time period Δ t, and sends an election message to the relay node to reacquire a forwarding weight of the relay node, and when the forwarding weight of the relay node is lower than the maximum forwarding weight of the remaining candidate relay nodes, the cluster head node selects the candidate relay node corresponding to the maximum forwarding weight as a new relay node from the remaining candidate relay nodes, where the update formula of the trust level is:
in the formula of UIK(t +1) represents the trust degree, U, of the cluster head node I on the relay node K updated at the t +1 th timeIK(t) the credibility of the cluster head node I to the relay node K updated at the t time, nIK(delta t) is the number of indoor temperature and humidity data packets forwarded by the relay node K in the last time period delta t and the number M of indoor temperature and humidity data packets forwarded by the cluster head node IIK(delta t) is the number of indoor temperature and humidity data packets sent by the cluster head node I to the relay node K in the last time period delta t, NIK(Δ t) is the total number of indoor temperature and humidity data packets forwarded by the relay node 4 in the last time period Δ t，e-γFor confidence decay factor, γ ∈ (0, 0.2)]E is an Euler constant, and both α and β are weight coefficients satisfying 0<α,β<1，α+β＝1。
The embodiment creatively sets an updating formula of the trust level, the updating formula judges the trust level of the relay node relative to the cluster head node according to the historical condition of the indoor temperature and humidity data packet forwarded by the relay node, and the updating formula has certain robustness; in this embodiment, the trust level of the relay node is updated every other time period Δ t, and the forwarding weight of the relay node is obtained again, when the forwarding weight of the relay node is lower than the maximum forwarding weight of the remaining alternative relay nodes, the cluster head node selects the alternative relay node corresponding to the maximum forwarding weight as a new relay node from the remaining alternative relay nodes, which is beneficial to further ensuring the reliability of forwarding indoor temperature and humidity data, and in addition, the energy consumption of each cluster head node is balanced through the update of the relay node.
From the above description of embodiments, it is clear for a person skilled in the art that the embodiments described herein can be implemented in hardware, software, firmware, middleware, code or any appropriate combination thereof. For a hardware implementation, a processor may be implemented in one or more of the following units: an application specific integrated circuit, a digital signal processor, a digital signal processing device, a programmable logic device, a field programmable gate array, a processor, a controller, a microcontroller, a microprocessor, other electronic units designed to perform the functions described herein, or a combination thereof. For a software implementation, some or all of the procedures of an embodiment may be performed by a computer program instructing associated hardware. In practice, the program may be stored on or transmitted over as one or more instructions or code on a computer-readable medium. Computer-readable media includes both computer storage media and communication media including any medium that facilitates transfer of a computer program from one place to another. A storage media may be any available media that can be accessed by a computer. The computer-readable medium can include, but is not limited to, random access memory, read only memory images, electrically erasable programmable read only memory or other optical disk storage, magnetic disk storage or other magnetic storage devices, or any other medium that can be used to carry or store desired program code in the form of instructions or data structures and that can be accessed by a computer.
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 (4)
1. The intelligent home temperature and humidity real-time control system is characterized by comprising a data acquisition subsystem, a temperature adjusting device, a dehumidifying device and a temperature and humidity control center, wherein the data acquisition subsystem, the temperature adjusting device and the dehumidifying device are all connected with the temperature and humidity control center; the data acquisition subsystem is configured to monitor indoor temperature and humidity in real time, acquire indoor temperature and humidity data and send the indoor temperature and humidity data to the temperature and humidity control center; the temperature and humidity control center is configured to analyze and process the received indoor temperature and humidity data, generate a corresponding control instruction, and control the operation of the temperature adjusting equipment and the dehumidifying equipment according to the control instruction; the data acquisition subsystem comprises a single aggregation node and a plurality of sensor nodes which are deployed in a monitoring area, the sensor nodes acquire indoor temperature and humidity data and send the indoor temperature and humidity data to the aggregation node, and then the aggregation node sends the indoor temperature and humidity data to a temperature and humidity control center; presetting communication distances of all sensor nodes, dividing the sensor nodes into a plurality of clusters through a clustering routing protocol when a network is initialized, wherein each cluster comprises a cluster head node and a plurality of sensor nodes, and collecting indoor temperature and humidity data collected by all the sensor nodes in the cluster by the cluster head node and sending the indoor temperature and humidity data to a sink node; the cluster head node sends the indoor humiture data of collecting to the sink node, specifically includes:
(1) the cluster head node acquires neighbor cluster head node information through information interaction with other cluster head nodes, determines neighbor cluster head nodes which are closer to the sink node according to the neighbor cluster head node information, and constructs a candidate relay node list by taking the determined neighbor cluster head nodes which are closer to the sink node as candidate relay nodes;
(2) the cluster head node selects one alternative relay node from the alternative relay node list as a relay node;
(3) the cluster head node calculates a sending distance according to self energy and carries out periodic updating, when the distance from the cluster head node to the sink node does not exceed the current sending distance, the cluster head node directly sends the collected indoor temperature and humidity data to the sink node, and when the distance from the cluster head node to the sink node exceeds the current sending distance, the cluster head node directly sends the collected indoor temperature and humidity data to the selected relay node, wherein the calculation formula of the sending distance is as follows:
in the formula, HITransmitting distance, D, for cluster head node IIIs the current remaining energy of cluster head node I, DI0Is the initial energy of cluster head node I, YIC is the communication distance of the cluster head node I, and is a preset energy-based attenuation factor;
the cluster head node selects one alternative relay node from the alternative relay node list as the relay node, and the method comprises the following steps:
(1) the cluster head node sends election messages to all the alternative relay nodes, the alternative relay nodes receiving the election messages calculate own forwarding weights and send the forwarding weights to the cluster head node, wherein the election messages comprise position information of the cluster head node and the trust degree of the cluster head node to all the alternative relay nodes;
the calculation formula of the forwarding weight is as follows:
in the formula, aIJThe forwarding weight, D, of the J-th candidate relay node representing cluster head node IIJIs the current residual energy, R, of the J-th candidate relay nodeIJThe number of indoor temperature and humidity data packets in the cache list of the J-th candidate relay node is DUFor the preset energy consumed for forwarding an indoor temperature and humidity data packet, H (I, o) is the distance from a cluster head node I to a sink node, H (J, o) is the distance from the J-th standby relay node to the sink node, and UIJThe credibility of the cluster head node I to the J-th alternative relay node is set as 1 initially; e.g. of the type1、e2、e3Is a set weight coefficient;
(2) the cluster head node sorts all the alternative relay nodes according to the sequence of the forwarding weight values from large to small, and selects the alternative relay node with the highest sorting as the relay node;
the cluster head node updates the trust degree of the relay node every other time period delta t, and sends a election message to the relay node to obtain the forwarding weight value of the relay node again, when the forwarding weight value of the relay node is lower than the maximum forwarding weight value of the remaining alternative relay nodes, the cluster head node selects the alternative relay node corresponding to the maximum forwarding weight value in the remaining alternative relay nodes as a new relay node, and the updating formula of the trust degree is as follows:
in the formula of UIK(t +1) represents the trust degree, U, of the cluster head node I on the relay node K updated at the t +1 th timeIK(t) the credibility of the cluster head node I to the relay node K updated at the t time, nIK(delta t) is the number of indoor temperature and humidity data packets forwarded by the relay node K in the last time period delta t and the number M of indoor temperature and humidity data packets forwarded by the cluster head node IIK(delta t) is the number of indoor temperature and humidity data packets sent by the cluster head node I to the relay node K in the last time period delta t, NIK(Δ t) isThe relay node K forwards the total number e of indoor temperature and humidity data packets in the last time period delta t-γFor confidence decay factor, γ ∈ (0, 0.2)]E is an Euler constant, and both α and β are weight coefficients satisfying 0<α,β<1，α+β＝1。
2. The intelligent home temperature and humidity real-time control system according to claim 1, wherein a value range of C is [0.4,0.6 ].
3. The intelligent home temperature and humidity real-time control system according to claim 1 or 2, wherein the temperature and humidity control center comprises a processing module, a temperature adjusting control module and a dehumidifying control module, wherein input ends of the temperature adjusting control module and the dehumidifying control module are connected with the processing module, an output end of the temperature adjusting control module is connected with the temperature adjusting device, and an output end of the dehumidifying control module is connected with the dehumidifying device.
4. The intelligent home temperature and humidity real-time control system according to claim 3, wherein the sensor node comprises a collection unit, an analysis processing unit and a communication unit; the acquisition unit is completed by a sensor and an analog-to-digital converter, the analysis processing unit is completed by a microprocessor and a memory, and the communication unit is completed by a wireless transceiver.
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