CN109213243B - Intelligent home temperature and humidity wireless automatic control system - Google Patents
Intelligent home temperature and humidity wireless automatic control system Download PDFInfo
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- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
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- G05D27/02—Simultaneous control of variables covered by two or more of main groups G05D1/00 - G05D25/00 characterised by the use of electric means
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- G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
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Abstract
The invention provides an intelligent home temperature and humidity wireless automatic control system which comprises a wireless sensor network monitoring subsystem, a temperature adjusting device, a dehumidifying device and a temperature and humidity regulating device, wherein the wireless sensor network monitoring subsystem, the temperature adjusting device and the dehumidifying device are all connected with the temperature and humidity regulating device; the wireless sensor network monitoring subsystem is configured to monitor indoor temperature and humidity in real time, collect indoor temperature and humidity data and send the indoor temperature and humidity data to the temperature and humidity regulation and control device; the temperature and humidity control device 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 and the dehumidifying device according to the control instruction; the wireless sensor network monitoring subsystem comprises a single aggregation node and a plurality of sensor nodes which are arranged in a monitoring area, the sensor nodes collect 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 the temperature and humidity regulation and control device.
Description
Technical Field
The invention relates to the field of intelligent home furnishing, in particular to an intelligent home furnishing temperature and humidity wireless automatic 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 household temperature and humidity wireless automatic control system.
The purpose of the invention is realized by adopting the following technical scheme:
the intelligent household temperature and humidity wireless automatic control system comprises a wireless sensor network monitoring subsystem, a temperature adjusting device, a dehumidifying device and a temperature and humidity regulating device, wherein the wireless sensor network monitoring subsystem, the temperature adjusting device and the dehumidifying device are all connected with the temperature and humidity regulating device; the wireless sensor network monitoring subsystem is configured to monitor indoor temperature and humidity in real time, collect indoor temperature and humidity data and send the indoor temperature and humidity data to the temperature and humidity regulation and control device; the temperature and humidity control device 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 and the dehumidifying device according to the control instruction; the wireless sensor network monitoring subsystem comprises a single aggregation node and a plurality of sensor nodes which are arranged in a monitoring area, the sensor nodes collect 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 the temperature and humidity regulation and control device.
In a mode that can realize, humiture regulation and control device 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 is connected with attemperator, dehumidification control module's output is connected with dehydrating unit.
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 indoor humiture data control attemperator and dehydrating unit's operation, 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.
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 schematic block diagram of a wireless automatic temperature and humidity control system of an intelligent home according to an exemplary embodiment of the present invention;
fig. 2 is a schematic block diagram of a temperature and humidity control device according to an exemplary embodiment of the present invention.
Reference numerals:
the system comprises a wireless sensor network monitoring subsystem 1, a temperature adjusting device 2, a dehumidifying device 3, a temperature and humidity regulating device 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 wireless automatic temperature and humidity control system for smart home according to an embodiment of the present invention. Referring to fig. 1, the wireless automatic control system for temperature and humidity of smart home provided by this embodiment includes a wireless sensor network monitoring subsystem 1, a temperature adjusting device 2, a dehumidifying device 3, and a temperature and humidity regulating device 4, wherein the wireless sensor network monitoring subsystem 1, the temperature adjusting device 2, and the dehumidifying device 3 are all connected to the temperature and humidity regulating device 4.
The wireless sensor network monitoring subsystem 1 is configured to monitor indoor temperature and humidity in real time, collect indoor temperature and humidity data and send the indoor temperature and humidity data to the temperature and humidity control device 4.
The wireless sensor network monitoring subsystem 1 comprises a single aggregation node and a plurality of sensor nodes which are arranged in a monitoring area, the sensor nodes collect 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 the temperature and humidity control device 4.
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 device 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 device 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 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 collected by the wireless sensor network monitoring subsystem 1 exceeds the upper limit of the preset data threshold, the processing module 10 sends a control instruction for lowering the temperature to the temperature adjustment control module 20, and then the temperature adjustment control module 20 controls the temperature adjustment device 2 to provide a cold source according to the control instruction, so as to control the indoor temperature within a suitable range. When the indoor temperature collected by the wireless sensor network monitoring subsystem 1 is lower than the preset data threshold, the processing module 10 sends a control instruction for increasing the temperature to the temperature adjustment control module 20, and then the temperature adjustment control module 20 controls the temperature adjustment 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 can 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 indoor humiture data control attemperator and dehydrating unit's operation, 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, and when a network is initialized, the sensor nodes are divided into a plurality of clusters through a clustering routing protocol, wherein each cluster comprises a cluster head node and a plurality of sensor nodes; the cluster head node collects indoor temperature and humidity data collected by each sensor node in the cluster and sends the indoor temperature and humidity data to the sink node, and the cluster head node specifically comprises the following steps:
(1) initially, acquiring neighbor cluster head node information by a cluster head node through information interaction with other cluster head nodes, and selecting a neighbor cluster head node as a relay node according to the neighbor cluster head node information;
(2) in an indoor temperature and humidity data transmission stage, a 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 a sink node does not exceed the current sending distance, the cluster head node directly sends 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 a selected relay node, wherein a calculation formula of the sending distance is as follows:
in the formula, ZITransmitting 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, qIFor the communication distance of the cluster head node I, rho is a preset energy-based attenuation factor, and the value range of rho is [0.7,0.8]]。
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.
Preferably, the clustering routing protocol is a LEACH-based routing protocol.
In an implementation manner, the selecting a neighbor cluster head node as a relay node according to the neighbor cluster head node information includes:
(1) the cluster head node takes the neighbor cluster head node meeting the alternative conditions as an alternative relay node, and an alternative relay node set is constructed:
(2) the cluster head node selects the candidate relay node closest to the cluster head node in the candidate relay node set as the relay node;
the alternative conditions are:
in the formula, YIJRepresenting the trust of the cluster head node I to the neighbor cluster head node J, wherein initially, the trust of the cluster head node to each neighbor cluster head node is 1; y isIlRepresenting the trust degree of the cluster head node I to the ith neighbor cluster head node, NIThe number of neighbor cluster head nodes which are cluster head nodes I, Z (I, O) is the distance from the cluster head nodes I to the sink node, Z (J, O) is the distance from the neighbor cluster head nodes J to the sink node, f [ Z (I, O) -Z (J, O)]For judging the value function, f [ Z (I, O) -Z (J, O) is larger than or equal to 0](ii) when Z (I, O) -Z (J, O) < 0, f [ Z (I, O) -Z (J, O)]＝0。
In this embodiment, based on the trust level of the cluster head node for each neighboring cluster head node, the neighboring cluster head node closer to the sink node is selected as the candidate relay node, and further the candidate relay node closest to the sink node is selected as the relay node in the candidate relay node set to be responsible for forwarding the indoor temperature and humidity data collected by the cluster head node. The embodiment correspondingly sets the optional condition for selecting the optional relay node, provides a proper standard for selecting the optional relay node, ensures that the indoor temperature and humidity data cannot be transmitted to the sink node in the opposite direction on one hand, and ensures the reliability of forwarding the indoor temperature and humidity data on the other hand. The candidate relay nodes closest to the candidate relay node are selected from the candidate relay nodes as the relay nodes, so that the energy for forwarding indoor temperature and humidity data is saved as much as possible, and the energy consumption cost is reduced.
In one embodiment, the cluster head node acquires energy information of the relay node every other time period Δ t, and when the current remaining energy of the relay node is lower than a preset energy lower limit, the cluster head node removes the relay node from the candidate relay node set, updates the candidate relay node set, and selects a candidate relay node closest to the updated candidate relay node set as a new relay node.
The embodiment updates the relay nodes in real time, and is beneficial to balancing the energy consumption of each cluster head node.
In one embodiment, the updating the set of alternative relay nodes includes:
(1) the cluster head node updates the trust degree of the cluster head node on each alternative relay node in the current alternative relay node set:
in the formula, YIK(S +1) represents the credibility of the cluster head node I to the alternative relay node K updated at the S +1 th time, YIK(S) the credibility D of the cluster head node I to the alternative relay node K updated in the S timeIKIs the current residual energy, D, of the alternative relay node KIKOIs the initial energy, R, of the alternative relay node KIKThe number of indoor temperature and humidity data packets in the cache list of the alternative relay node K is DYEnergy consumed for a predetermined forwarding of an indoor temperature and humidity data packet, DminAt a predetermined lower energy limit, e-xFor the confidence decay factor, e is the Euler constant, x ∈ (0, 0.2)]；
(2) And the cluster head node judges whether each alternative relay node in the current alternative relay node set meets the alternative condition or not according to the updated trust degree, and eliminates the alternative relay nodes which do not meet the alternative condition from the current alternative relay node set to finish the updating of the alternative relay node set.
The embodiment creatively sets an updating formula of the trust degree, the updating formula judges the trust degree of the alternative relay node relative to the cluster head node according to the energy and the energy consumption condition possibly caused by forwarding the cache data, and judges whether each alternative relay node in the current alternative relay node set meets the alternative condition again based on the updated trust degree, so that the improper alternative relay node is screened out, the alternative relay node is selected to have certain robustness, the probability that the neighbor cluster head node with sufficient relative energy and less indoor temperature and humidity data forwarding task amount successfully acts as the relay node is favorably improved, the energy consumption of each cluster head node in the network is further balanced, and the service life of the wireless sensor network is prolonged.
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 media 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 (5)
1. The intelligent home temperature and humidity wireless automatic control system is characterized by comprising a wireless sensor network monitoring subsystem, a temperature adjusting device, a dehumidifying device and a temperature and humidity regulating device, wherein the wireless sensor network monitoring subsystem, the temperature adjusting device and the dehumidifying device are all connected with the temperature and humidity regulating device; the wireless sensor network monitoring subsystem is configured to monitor indoor temperature and humidity in real time, collect indoor temperature and humidity data and send the indoor temperature and humidity data to the temperature and humidity regulation and control device; the temperature and humidity control device 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 and the dehumidifying device according to the control instruction; the wireless sensor network monitoring subsystem comprises a single aggregation node and a plurality of sensor nodes which are deployed in a monitoring area, wherein the sensor nodes collect 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 regulation device; presetting the communication distance of each sensor node, and when a network is initialized, dividing the sensor nodes into a plurality of clusters through a clustering routing protocol, wherein each cluster comprises a cluster head node and a plurality of sensor nodes; the cluster head node collects indoor temperature and humidity data collected by each sensor node in the cluster and sends the indoor temperature and humidity data to the sink node, and the cluster head node specifically comprises the following steps:
(1) initially, acquiring neighbor cluster head node information by a cluster head node through information interaction with other cluster head nodes, and selecting a neighbor cluster head node as a relay node according to the neighbor cluster head node information;
(2) in an indoor temperature and humidity data transmission stage, a 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 a sink node does not exceed the current sending distance, the cluster head node directly sends 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 a selected relay node, wherein a calculation formula of the sending distance is as follows:
in the formula, ZITransmitting 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, qIRho is a preset energy-based attenuation factor for the communication distance of the cluster head node I;
the selecting a neighbor cluster head node as a relay node according to the neighbor cluster head node information comprises the following steps:
(1) the cluster head node takes the neighbor cluster head node meeting the alternative conditions as an alternative relay node, and an alternative relay node set is constructed:
(2) the cluster head node selects the candidate relay node closest to the cluster head node in the candidate relay node set as the relay node;
the alternative conditions are:
in the formula, YIJRepresenting the trust of the cluster head node I to the neighbor cluster head node J, wherein initially, the trust of the cluster head node to each neighbor cluster head node is 1; y isIlRepresenting the trust degree of the cluster head node I to the ith neighbor cluster head node, NIThe number of neighbor cluster head nodes which are cluster head nodes I, Z (I, O) is the distance from the cluster head nodes I to the sink node, Z (J, O) is the distance from the neighbor cluster head nodes J to the sink node, f [ Z (I, O) -Z (J, O)]For judging the value function, f [ Z (I, O) -Z (J, O) is larger than or equal to 0]When Z (I, O) -Z (J, O)<At 0, f [ Z (I, O) -Z (J, O)]＝0；
The cluster head node acquires energy information of the relay node at intervals of a time period delta t, when the current residual energy of the relay node is lower than a preset energy lower limit, the cluster head node removes the relay node from the standby relay node set, updates the standby relay node set, and selects the standby relay node closest to the updated standby relay node set as a new relay node; the updating alternative relay node set comprises:
(1) the cluster head node updates the trust degree of the cluster head node on each alternative relay node in the current alternative relay node set:
in the formula, YIK(S +1) represents the credibility of the cluster head node I to the alternative relay node K updated at the S +1 th time, YIK(S) the credibility D of the cluster head node I to the alternative relay node K updated in the S timeIKIs the current residual energy, D, of the alternative relay node KIK0Is the initial energy, R, of the alternative relay node KIKThe number of indoor temperature and humidity data packets in the cache list of the alternative relay node K is DYFor preset transfer of indoor temperature and humidityEnergy consumed by the degree data packet, DminAt a predetermined lower energy limit, e-xFor the confidence decay factor, e is the Euler constant, x ∈ (0, 0.2)]；
(2) And the cluster head node judges whether each alternative relay node in the current alternative relay node set meets the alternative condition or not according to the updated trust degree, and eliminates the alternative relay nodes which do not meet the alternative condition from the current alternative relay node set to finish the update of the alternative relay node set.
2. The intelligent home temperature and humidity wireless automatic control system according to claim 1, wherein a value range of p is [0.7,0.8 ].
3. The intelligent home temperature and humidity wireless automatic control system according to claim 1, wherein the clustering routing protocol is a LEACH-based routing protocol.
4. An intelligent home temperature and humidity wireless automatic control system according to any one of claims 1-3, wherein the temperature and humidity regulating and controlling device comprises a processing module, a temperature regulating control module and a dehumidification control module, wherein input ends of the temperature regulating control module and the dehumidification control module are connected with the processing module, an output end of the temperature regulating control module is connected with the temperature regulating device, and an output end of the dehumidification control module is connected with the dehumidification device.
5. The intelligent home temperature and humidity wireless automatic control system according to claim 4, wherein 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.
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