CN111853924A - Intelligent switching device based on wireless sensor network and control method thereof - Google Patents
Intelligent switching device based on wireless sensor network and control method thereof Download PDFInfo
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
- F24D17/00—Domestic hot-water supply systems
- F24D17/0036—Domestic hot-water supply systems with combination of different kinds of heating means
- F24D17/0063—Domestic hot-water supply systems with combination of different kinds of heating means solar energy and conventional heaters
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
- F24D19/00—Details
- F24D19/10—Arrangement or mounting of control or safety devices
- F24D19/1006—Arrangement or mounting of control or safety devices for water heating systems
- F24D19/1051—Arrangement or mounting of control or safety devices for water heating systems for domestic hot water
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
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Abstract
The intelligent switching device comprises a host controller, and a solar water heater controller, an electric water heater controller and a gas hot water controller which are used for controlling the on-off of hot water of the three hot water supply branch pipelines; the host controller comprises a main control chip, a wireless communication module, a gas detection module, a power-off detection module and a display screen, the solar water heating controller, the electric water heating controller and the gas water heating controller respectively comprise the main control chip, the wireless communication module, a relay module and an electromagnetic valve, and the host controller is communicated with the solar water heating controller, the electric water heating controller and the gas water heating controller through the wireless communication module to realize data and control instruction communication. The invention can automatically and intelligently switch different hot water supply pipelines according to different set conditions of temperature, water level, power supply and air supply, thereby realizing the purpose of saving energy.
Description
Technical Field
The invention relates to a switching device and a switching method for multi-path household hot water supply pipelines, in particular to an intelligent switching device based on a wireless sensor network and a control method thereof.
Background
Currently, with the proposal and continuous deepening of the green development concept, the development, intensification, energy conservation, environmental protection and other industrial systems are developed, and the construction of a clean, low-carbon, safe and efficient energy system to solve the energy and environmental problems becomes an important consensus of the international society, and is also an important research and development direction for the adjustment and reformation of energy supply systems in China. Solar energy is one of clean energy sources which can be used for a long time, has the characteristics of no public nuisance, no noise, no pollution and low cost, and is one of green clean energy technologies which have the most commercial development value and relatively mature technology at present. China has wide breadth, solar energy resources are rich, and the proportion of the solar energy for obtaining hot water in the aspects of economy and residence, which occupies the total energy requirement in China, is large. In 2005, solar hot water was consumed by residents at 30%, hot water was obtained by burning natural gas at 7%, and hot water was obtained by power generation at 12%. The solar water heater as a pollution-free solar energy receiving and transmitting system occupies a very important position in the aspect of obtaining solar hot water. With the diversification of the hot water supply modes of the modern home environment (namely, two or more of the hot water supply modes such as a solar water heater, a gas water heater, an electric water heater and the like are possible), the difference exists between the resources and the energy utilization rate of different hot water supply modes (wherein the solar water heater is superior to the gas water heater, and the gas water heater is superior to the electric water heater), and the limitation is caused by the factors of narrow home environment space, complex wiring of various hot water supply modes, difficulty in moving and the like, how to utilize clean energy to the maximum extent, the utilization efficiency of the solar water heater is improved, the wireless intelligent switching of various hot water supply modes is realized, the requirement on the use of hot water in the modern intelligent home environment is met, and the intelligent home.
Disclosure of Invention
In order to solve the technical problems, the invention aims to provide an intelligent switching device based on a wireless sensor network and a control method thereof.
The technical scheme adopted by the invention is as follows: the intelligent switching device based on the wireless sensor network comprises a hot water supply branch pipeline connected to a solar water heater, an electric water heater and a gas water heater and a total hot water supply pipeline connected with the hot water supply branch pipeline, and comprises a host controller, and a solar water heater controller, an electric water heater controller and a gas hot water controller which are used for controlling the on-off of hot water of the three hot water supply branch pipelines;
the host controller comprises a main control chip, a wireless communication module, a gas detection module, a power-off detection module and a display screen, the solar water heating controller, the electric water heating controller and the gas water heating controller respectively comprise the main control chip, the wireless communication module, a relay module and an electromagnetic valve, and the host controller is communicated with the solar water heating controller, the electric water heating controller and the gas water heating controller through the wireless communication module to realize data and control instruction communication.
The electromagnetic valve in the electric water heating controller is correspondingly arranged on a hot water supply branch pipeline connected with the electric water heater, and the electric water heating controller receives a control instruction of the host controller through the wireless communication module of the electric water heating controller, completes on-off operation of the relay module in the electric water heating controller and realizes on-off control of the electromagnetic valve.
The control method is characterized in that the solenoid valve in the gas hot water controller is correspondingly arranged on a hot water supply branch pipeline connected with the gas water heater, and the gas hot water controller receives a control instruction of the host controller through a wireless communication module of the gas hot water controller, so that the on-off operation of the relay module in the gas hot water controller is completed, and the on-off control of the solenoid valve is realized.
The wireless communication module in the solar water heater controller receives a control instruction from the host controller and is used for controlling the on-off of the relay module in the solar water heater controller so as to control the on-off of the electromagnetic valve.
Further optimizing, a temperature sensor and a liquid level sensor are further arranged in the solar water controller, water temperature and water level information in the solar water heater are obtained through the temperature sensor and the liquid level sensor, the obtained water temperature and water level information are transmitted to the host controller through the wireless communication module and are displayed in the display screen.
And further optimizing, wherein the host controller, the solar water heating controller, the electric water heating controller and the gas water heating controller are respectively provided with an STC12C5A60S2 singlechip as a main control chip.
Further optimization, the host controller can adjust a manual switching mode and an automatic switching mode, wherein the manual switching mode is used for selecting and switching the hot water supply modes according to subjective selection and preference of a user, and the automatic switching mode is used for automatically and intelligently switching the hot water supply modes according to different conditions of temperature, water level, power supply and gas set by the main control chip.
Further optimization, the method for automatically switching the modes comprises the following steps:
s1, setting the priority levels of the solar water heater, the electric water heater and the gas water heater in the host controller, wherein the priority levels are arranged according to the sequence: the system comprises a solar water heater, a gas water heater and an electric water heater, wherein a liquid level threshold and a water temperature threshold which are associated with the solar water heater are set;
s2, when the fact that the water temperature and the liquid level in the solar water heater both exceed the set water temperature threshold and the set liquid level threshold is detected, the host controller sends electromagnetic valve closing control signals to the electric water heating controller and the gas hot water heating controller, meanwhile sends electromagnetic valve opening control signals to the solar water heating controller, and opens a hot water supply electromagnetic valve to realize hot water supply of the solar water heater;
s3, when the host controller detects that one of the water temperature and the water level of the solar water heater is lower than a set value, the host controller sends a control signal for closing the electromagnetic valve to the solar water heater controller, and simultaneously the host controller sends a control signal for opening the electromagnetic valve to the gas hot water controller, so that the gas water heater can supply hot water;
and S4, when the host controller detects that one of the water temperature and the water level of the solar water heater is lower than a set value and simultaneously detects that the fuel gas is not sufficiently supplied, the host controller sends a control signal for closing the electromagnetic valve to the solar water heater controller and the fuel gas hot water controller, and simultaneously sends a control signal for opening the electromagnetic valve to the electric water heater controller, and opens the hot water supply electromagnetic valve on the electric water heater controller, so that the electric water heater supplies hot water.
Further optimization, in step S2, when the liquid level in the solar water heater is detected to be lower than the set liquid level threshold, the main controller sends an instruction to open the electromagnetic valve for water inlet of the solar water heater, and when the liquid level reaches the set liquid level threshold, the electromagnetic valve for water inlet of the solar water heater is closed.
Further preferably, in step S4, when the host controller detects that one of the water temperature and the water level of the solar water heater is lower than the set value and detects that the gas supply is insufficient and the power supply is insufficient, the host controller sends control signals for closing the solenoid valves to the solar water heater controller, the gas-hot water controller, and the electric water heater controller.
The invention has the beneficial effects that:
the intelligent hot water supply system comprises a host controller, and a solar water heater controller, an electric water heater controller and a gas hot water controller which are used for controlling the on-off of hot water of three hot water supply branch pipelines, wherein the host controller realizes data and control instruction communication with the three controllers through a wireless communication module, different hot water supply pipelines can be automatically and intelligently switched according to different set conditions of temperature, water level, power supply and air supply, and the purposes of saving energy and improving the life quality and the happiness of users are realized.
In the scheme, the host controller can be adjusted into a manual working mode and an automatic working mode, wherein the manual mode is to switch pipelines according to subjective selection of a user, so that the set of hot water supply system has wider applicability; the automatic mode is to switch different hot water supply pipelines according to different set conditions of temperature, water level, power supply and air supply, thereby improving the applicability of the device.
Drawings
FIG. 1 is a schematic illustration of the installation of three hot water fixtures according to the present invention;
FIG. 2 is a schematic diagram of the connection of modules in the present invention;
FIG. 3 is a schematic diagram of the mode of operation of the present invention;
fig. 4 is a flow chart of the operational logic of the automatic switching mode of the present invention.
Reference numerals: 1. the system comprises a host controller, 11, a main control chip, 12, a wireless communication module, 13, a gas detection module, 14, a power failure detection module, 15, a display screen, 2, a solar water heater controller, 21, a main control chip, 22, a wireless communication module, 23, a relay module, 24, an electromagnetic valve, 25, a temperature sensor, 26, a liquid level sensor, 3, a gas hot water controller, 31, a main control chip, 32, a wireless communication module, 33, a relay module, 34, an electromagnetic valve, 4, an electric water heater controller, 41, a main control chip, 42, a wireless communication module, 43, a relay module, 44, an electromagnetic valve, 5, a hot water supply branch pipeline, 6, a total hot water supply pipeline, 7, a solar water heater, 8, a gas water heater, 9 and an electric water heater.
Detailed Description
The invention is described in detail below by way of exemplary embodiments. It should be understood, however, that elements, structures and features of one embodiment may be beneficially incorporated in other embodiments without further recitation.
As shown in fig. 1, the intelligent switching device based on the wireless sensor network and the control method thereof include: a total hot water supply pipeline 6 which is respectively connected with hot water supply branch pipelines 5 arranged on a solar water heater 7, an electric water heater 9 and a gas water heater 8; the intelligent switching device comprises a host controller 1, a solar water heating controller 2, an electric water heating controller 4 and a gas hot water controller 3, wherein the solar water heating controller 2 is used for controlling the on-off of hot water in three hot water supply branch pipelines 5;
as shown in fig. 2, the host controller 1 includes a main control chip 11, a wireless communication module 12, a gas detection module 13, a power failure detection module 14 and a display screen 15, the solar water heater controller, the electric water heater controller and the gas hot water controller include main control chips, wireless communication modules, relay modules and electromagnetic valves, and the host controller realizes data and control instruction communication with the solar water heater controller, the electric water heater controller and the gas hot water controller through the wireless communication modules;
the scheme comprises two working modes of manual switching and automatic switching, which are realized by a state switching key on a host controller 1, wherein the working modes are shown in figure 3, in the manual mode, the selection and the switching of the hot water supply mode can be carried out according to the subjective selection and the preference of a user, and the switching control of the hot water supply of the solar water heater, the hot water supply of the electric water heater and the hot water supply of the gas water heater is realized by respectively controlling a solar water heater controller, a gas hot water controller and an electric water heater controller through three keys in the host controller. When any one of the three keys is pressed down, the host controller sends an instruction for closing the electromagnetic valves to the other two hot water controllers, and then sends an instruction for opening the electromagnetic valves to one of the hot water controllers, so that only one electromagnetic valve in the total hot water supply pipeline is opened and the electromagnetic valves in the hot water controllers corresponding to the other two keys are automatically closed no matter which key is pressed down, and waste of hot water resources caused by human operation errors can be effectively avoided.
The method for automatically switching the modes comprises the following steps:
s1, setting the priority levels of the solar water heater, the electric water heater and the gas water heater in the host controller, wherein the priority levels are arranged according to the sequence: the system comprises a solar water heater, a gas water heater and an electric water heater, wherein a liquid level threshold and a water temperature threshold which are associated with the solar water heater are set;
s2, when the fact that the water temperature and the liquid level in the solar water heater both exceed the set water temperature threshold and the set liquid level threshold is detected, the host controller sends electromagnetic valve closing control signals to the electric water heating controller and the gas hot water heating controller, meanwhile sends electromagnetic valve opening control signals to the solar water heating controller, and opens a hot water supply electromagnetic valve to realize hot water supply of the solar water heater;
in the step S2, when the liquid level in the solar water heater is detected to be lower than the set liquid level threshold, the main controller sends out an instruction to open the water inlet electromagnetic valve of the solar water heater, and when the liquid level reaches the set liquid level threshold, the water inlet electromagnetic valve of the solar water heater is closed;
s3, when the host controller detects that one of the water temperature and the water level of the solar water heater is lower than a set value, the host controller sends a control signal for closing the electromagnetic valve to the solar water heater controller, and simultaneously the host controller sends a control signal for opening the electromagnetic valve to the gas hot water controller, so that the gas water heater can supply hot water;
and S4, when the host controller detects that one of the water temperature and the water level of the solar water heater is lower than a set value and simultaneously detects that the fuel gas is not sufficiently supplied, the host controller sends a control signal for closing the electromagnetic valve to the solar water heater controller and the fuel gas hot water controller, and simultaneously sends a control signal for opening the electromagnetic valve to the electric water heater controller, and opens the hot water supply electromagnetic valve on the electric water heater controller, so that the electric water heater supplies hot water.
In S4, when the host controller detects that one of the water temperature and the water level of the solar water heater is lower than the set value and detects that the gas supply is insufficient and the power supply is insufficient, the host controller sends control signals for closing the solenoid valves to the solar water heater controller, the gas-hot water controller, and the electric water heater controller.
The components of each controller are explained in detail below:
the host controller 1 comprises a main control chip 11, a wireless communication module 12, a gas detection module 13, a power failure detection module 14 and a display screen 15, wherein the wireless communication module 12 can adopt a convergent HC-12 wireless communication module to realize communication between the host controller and other controllers, and the gas detection module 13 and the power failure detection module 14 are used for detecting gas supply and power supply conditions in a family.
The solar water heater controller 2 comprises a main control chip 21, a wireless communication module 22, a relay module 23, an electromagnetic valve 24, a temperature sensor 25 and a liquid level sensor 26, and is characterized in that the temperature sensor 25 and the liquid level sensor 26 are used for acquiring water temperature and water level information in the solar water heater 7, transmitting the acquired water temperature and water temperature information to the host controller 1 through the wireless communication module, and displaying the information on the display screen 15; the electromagnetic valve 24 in the solar water heater controller 2 is correspondingly arranged on the hot water supply branch pipe 5 connected with the solar water heater 7, and the wireless communication module 22 in the solar water heater controller receives a control instruction from the host controller and is used for controlling the on-off of the relay module 23 in the solar water heater controller so as to control the on-off of the electromagnetic valve 24.
The gas hot water controller 3 is composed of a main control chip 31, a wireless communication module 32, a relay module 33 and an electromagnetic valve 34, the electromagnetic valve 34 in the gas hot water controller 3 is correspondingly arranged on a hot water supply branch pipeline connected with the gas water heater 8, and the gas hot water controller receives a control instruction of a host controller through the wireless communication module 32, completes on-off operation of the relay module 33 of the gas hot water controller, and realizes on-off control of the electromagnetic valve 34.
The electric water controller 4 comprises a main control chip 41, a wireless communication module 42, a relay module 43 and an electromagnetic valve 44, wherein the electromagnetic valve 44 in the electric water controller is correspondingly arranged on a hot water supply branch pipeline connected with the electric water heater 9, and the electric water controller receives a control instruction of a host controller through the wireless communication module 42 to complete on-off operation of the relay module 43 of the electric water controller, so that on-off control of the electromagnetic valve 44 is realized.
The main control chip adopts an STC12C5A60S2 singlechip.
Examples 1,
The present embodiment mainly describes an automatic switching method,
setting the following priority levels of a solar water heater, a gas water heater and an electric water heater;
setting a water temperature threshold value of 60 ℃ and a water level threshold value of 3/4 of the water storage capacity of the solar water heater, and specifically operating as follows:
as shown in fig. 4, the solar water heater controller obtains the water temperature and water level information of the solar water heater in real time, and sends the collected water temperature and water level information to the host controller through the wireless communication module. When the liquid level of the solar water heater does not meet 3/4, starting an electromagnetic valve for water inlet of the solar water heater; when the liquid level reaches 3/4, closing the water inlet electromagnetic valve of the solar water heater; when the temperature in the solar water heater is higher than 60 ℃ and the liquid level condition is met, the host controller sends out electromagnetic valve closing control signals to the electric water heater controller and the gas hot water controller to close the hot water supply electromagnetic valves on the electric water heater controller and the gas hot water controller, and simultaneously sends out electromagnetic valve opening control signals to the solar water heater controller to open the hot water supply electromagnetic valves on the solar water heater controller, so that the hot water supply operation of the solar water heater is realized; when one of the water temperature and water level signals acquired by the solar water heater controller does not meet the condition, the host controller sends a control signal for closing the electromagnetic valve to the solar water heater controller, the solar water heater controller receives the signal from the host controller and then closes the hot water supply electromagnetic valve on the solar water heater controller, then the host controller sends a control signal for opening the electromagnetic valve to the gas hot water controller according to the set priority level, and the gas hot water controller receives the signal from the host controller and then opens the hot water supply electromagnetic valve on the gas hot water controller; when the water temperature or the water level in the solar water heater controller does not meet the opening condition and the host controller detects that the natural gas supply is insufficient (a gas cut-off state), the host controller sends a control signal of closing an electromagnetic valve to the solar water heater controller and the gas hot water controller to close hot water supply electromagnetic valves on the solar water heater controller and the gas hot water controller, and then sends a control signal of opening the electromagnetic valve to the electric water heater controller to open a hot water supply electromagnetic valve on the electric water heater controller to realize the hot water supply operation of the electric water heater; when the water temperature or water level in the solar water heater controller does not meet the opening condition and the host controller simultaneously detects that the natural gas supply is insufficient (gas cut-off state) and the power supply is insufficient (power cut-off state), the host controller sends out electromagnetic valve closing control signals to the solar water heater controller, the gas hot water controller and the electric water heater controller so as to close the hot water supply electromagnetic valves on the solar water heater controller, the gas hot water controller and the electric water heater controller and close the electromagnetic valves of the three types of hot water supply equipment so as to avoid the waste of water resources caused by the misoperation of the electromagnetic valves.
It should be noted that while the invention has been described in terms of the above-mentioned embodiments, other embodiments are also possible. It will be apparent to those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention, and it is intended that all such changes and modifications be covered by the appended claims and their equivalents.
Claims (10)
1. Intelligent auto-change over device based on wireless sensor network, including connect hot water supply branch pipeline on solar water heater, electric water heater, gas heater and connect the total hot water supply pipe of hot water supply branch pipeline, its characterized in that: the intelligent switching device comprises a host controller, a solar water heating controller, an electric water heating controller and a gas hot water controller, wherein the solar water heating controller is used for controlling the on-off of hot water in the three hot water supply branch pipelines;
the host controller comprises a main control chip, a wireless communication module, a gas detection module, a power-off detection module and a display screen, the solar water heating controller, the electric water heating controller and the gas water heating controller respectively comprise the main control chip, the wireless communication module, a relay module and an electromagnetic valve, and the host controller is communicated with the solar water heating controller, the electric water heating controller and the gas water heating controller through the wireless communication module to realize data and control instruction communication.
2. The intelligent switching device based on the wireless sensor network is characterized in that: the electromagnetic valve in the electric water heating controller is correspondingly arranged on a hot water supply branch pipeline connected with the electric water heater, and the electric water heating controller receives a control instruction of the host controller through a wireless communication module of the electric water heating controller, completes on-off operation of a relay module in the electric water heating controller and realizes on-off control of the electromagnetic valve.
3. The intelligent switching device based on the wireless sensor network is characterized in that: the electromagnetic valve in the gas hot water controller is correspondingly arranged on a hot water supply branch pipeline connected with the gas water heater, and the gas hot water controller receives a control instruction of the host controller through a wireless communication module of the gas hot water controller, completes on-off operation of a relay module in the gas hot water controller and realizes on-off control of the electromagnetic valve.
4. The intelligent switching device based on the wireless sensor network is characterized in that: the electromagnetic valve in the solar water heater controller is correspondingly arranged on a hot water supply branch pipeline connected with the solar water heater, and the wireless communication module in the solar water heater controller receives a control instruction from the host controller and is used for controlling the on-off of the relay module in the solar water heater controller so as to control the on-off of the electromagnetic valve.
5. The intelligent switching device based on the wireless sensor network is characterized in that: the solar water heater is characterized in that a temperature sensor and a liquid level sensor are further arranged in the solar water controller, water temperature and water level information in the solar water heater are obtained through the temperature sensor and the liquid level sensor, the obtained water temperature and water level information are transmitted to the host controller through the wireless communication module and are displayed in the display screen.
6. The intelligent switching device based on the wireless sensor network is characterized in that: the main control chip adopts an STC12C5A60S2 singlechip.
7. The control method of intelligent switching device based on wireless sensor network according to any one of claims 1-6, characterized in that: the host controller can adjust a manual switching mode and an automatic switching mode, wherein the manual switching mode is used for selecting and switching the hot water supply mode according to subjective selection and preference of a user, and the automatic switching mode is used for automatically and intelligently switching the hot water supply mode according to different conditions of temperature, water level, power supply and gas set by the main control chip.
8. The method for controlling an intelligent switching device based on a wireless sensor network as claimed in claim 7, wherein:
the method for automatically switching the modes comprises the following steps:
s1, setting the priority levels of the solar water heater, the electric water heater and the gas water heater in the host controller, wherein the priority levels are arranged according to the sequence: the system comprises a solar water heater, a gas water heater and an electric water heater, wherein a liquid level threshold and a water temperature threshold which are associated with the solar water heater are set;
s2, when the fact that the water temperature and the liquid level in the solar water heater both exceed the set water temperature threshold and the set liquid level threshold is detected, the host controller sends electromagnetic valve closing control signals to the electric water heating controller and the gas hot water heating controller, meanwhile sends electromagnetic valve opening control signals to the solar water heating controller, and opens a hot water supply electromagnetic valve to realize hot water supply of the solar water heater;
s3, when the host controller detects that one of the water temperature and the water level of the solar water heater is lower than a set value, the host controller sends a control signal for closing the electromagnetic valve to the solar water heater controller, and simultaneously the host controller sends a control signal for opening the electromagnetic valve to the gas hot water controller, so that the gas water heater can supply hot water;
and S4, when the host controller detects that one of the water temperature and the water level of the solar water heater is lower than a set value and simultaneously detects that the fuel gas is not sufficiently supplied, the host controller sends a control signal for closing the electromagnetic valve to the solar water heater controller and the fuel gas hot water controller, and simultaneously sends a control signal for opening the electromagnetic valve to the electric water heater controller, and opens the hot water supply electromagnetic valve on the electric water heater controller, so that the electric water heater supplies hot water.
9. The method for controlling an intelligent switching device based on a wireless sensor network according to claim 8, wherein: in step S2, when it is detected that the liquid level in the solar water heater is lower than the set liquid level threshold, the main controller sends an instruction to open the electromagnetic valve for water intake of the solar water heater, and when the liquid level reaches the set liquid level threshold, the electromagnetic valve for water intake of the solar water heater is closed.
10. The method for controlling an intelligent switching device based on a wireless sensor network according to claim 8, wherein: in S4, when the host controller detects that one of the water temperature and the water level of the solar water heater is lower than the set value and detects that the gas supply is insufficient and the power supply is insufficient, the host controller sends control signals for closing the solenoid valves to the solar water heater controller, the gas-hot water controller, and the electric water heater controller.
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| CN112797639A (en) * | 2020-12-30 | 2021-05-14 | 苏州东和节能工程有限公司 | Multi-energy linkage hot water system and using method thereof |
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