CN113175757A - Intelligent household system and remote control method thereof - Google Patents
Intelligent household system and remote control method thereof Download PDFInfo
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- CN113175757A CN113175757A CN202110583079.5A CN202110583079A CN113175757A CN 113175757 A CN113175757 A CN 113175757A CN 202110583079 A CN202110583079 A CN 202110583079A CN 113175757 A CN113175757 A CN 113175757A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H9/00—Details
- F24H9/20—Arrangement or mounting of control or safety devices
- F24H9/2007—Arrangement or mounting of control or safety devices for water heaters
- F24H9/2014—Arrangement or mounting of control or safety devices for water heaters using electrical energy supply
- F24H9/2021—Storage 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
- F24D19/1096—Arrangement or mounting of control or safety devices for electric heating systems
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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
- F24D2200/00—Heat sources or energy sources
- F24D2200/08—Electric heater
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Abstract
The invention provides a remote control method of an intelligent home system, which obtains the advanced starting time of an electric water heater according to the maximum heating power of the heater, the current air temperature outside the electric water heater, the water temperature of the electric water heater, the target water temperature of the electric water heater and a preset heater working time estimation formula after a user sends an advanced starting instruction, controls the heater to start to operate at the maximum heating power at a time point corresponding to the advanced starting time of the electric water heater, ensures that the water temperature of the electric water heater is just near the target water temperature when the user arrives at home, avoids the phenomenon that the water temperature in the electric water heater causes a great amount of waste of power consumption after the electric water heater is started in advance or the water temperature in the electric water heater can not enjoy hot water with comfortable temperature when the user arrives at home because the target water temperature is reached too late due to early arrival of the water temperature, and effectively reduces the power consumption of the advanced starting operation of the electric water heater, the comfort experience of the user is further improved.
Description
Technical Field
The invention relates to the technical field of intelligent home, in particular to an intelligent home system and a remote control method thereof.
Background
With the continuous improvement of the living standard of people, the existing house tends to be more and more intelligent, and under the continuous impact of the internet of things technology, the intelligent home system becomes a home system very favored by users.
In an intelligent home system, an electric water heater and a bathroom heater are common temperature adjusting devices in a family, the electric water heater mainly comprises a water storage type electric water heater and an instant heating type electric water heater, the water storage type electric water heater is safe to use, cannot generate harmful gas, is convenient to adjust the temperature, and is selected for use by many families.
The existing intelligent home control technology adds timing and reservation functions on a water storage type electric water heater and a bathroom heater, or remotely operates the electric water heater to start heating through a mobile phone and other equipment, so that a user can use the electric water heater immediately after arriving at home, although the use experience of the user is greatly improved, the waste of power consumption is easily caused, because the indoor temperature and the initial water temperature in the water heater are different under different weather conditions, the early start of the qualitative control electric water heater easily causes the hot water in the water heater to reach the set temperature too early and the early start of the qualitative control bathroom heater easily causes the bathroom temperature to reach the set temperature too early, if the hot water in the water heater reaches the set temperature too early, the difference between the hot water temperature in the water heater and the indoor temperature is large, the heat in the water heater is lost too much, especially in cold winter, when the heat loss in the water heater is more, the electric water heater needs to heat again to enable the hot water to reach the set temperature again, so that the heating energy consumption of the water heater is greatly increased, if the temperature of the bathroom reaches the set temperature too early, the difference between the air temperature in the bathroom and other areas is larger, the heat in the bathroom can flow to other areas in a large amount, and the electricity consumption energy consumption of the bathroom warmer is greatly increased.
Therefore, there is an urgent need for an intelligent home system and a remote control method thereof to solve the above problems.
Disclosure of Invention
The invention aims to overcome the defects of the prior art, provides an intelligent home system and a remote control method, and aims to overcome the defects that the prior advanced control technology of an electric water heater and a bathroom heater is easy to cause a large amount of waste of power consumption or influence on the comfortable experience of users.
Therefore, the invention adopts the following technical scheme: a remote control method of an intelligent home system comprises the following steps:
step 1, a user terminal sends an advance opening instruction and a time point when a user arrives at home to an intelligent controller;
step 2, after receiving the advanced start instruction, the intelligent controller acquires target water temperature of the electric water heater and maximum heating power of the heater, detects the water temperature of the electric water heater and the air temperature outside the electric water heater in real time, records the time point of receiving the advanced start instruction sent by the user terminal as a first time point, records the time point of arrival of the user as a second time point, and calculates the time interval between the first time point and the second time point;
step 3, obtaining the air temperature and the water temperature of the electric water heater at the first time point, calculating the time required for heating the water temperature of the electric water heater from the water temperature of the electric water heater at the first time point to the target water temperature according to the maximum heating power of the heater, the air temperature at the outer side of the electric water heater at the first time point, the water temperature of the electric water heater at the first time point, the target water temperature of the electric water heater and a preset heater working time estimation formula, and recording the time required for heating the water temperature of the electric water heater from the water temperature of the electric water heater at the first time point to the target water temperature as the theoretical heating time of the electric water heater;
step 4, judging whether the time interval between the first time point and the second time point is greater than or equal to the theoretical heating time of the electric water heater, if not, immediately controlling the heater to operate at the maximum heating power; if so, determining the advanced starting time point of the heater according to the arrival time point of the user and the theoretical heating time of the electric water heater, and setting the time period from the advanced starting time point of the heater to the arrival time point of the user as the advanced starting time period of the electric water heater;
and 5, judging whether the current time is in the early starting time period of the electric water heater, if not, controlling the heater not to work, and if so, controlling the heater to operate at the maximum heating power.
Further, the preset heater working time estimation formula is as follows:
T= cm（W2- W1）/{F- K×M×[（W2+ W1）/2- W3]} ；
the method comprises the following steps that time required for heating the water temperature of the T-electric water heater from the water temperature of the electric water heater at a first time point to a target water temperature, the maximum heating power of the F-heater, c-specific heat capacity of air, M-mass of water in an inner cavity of a preset electric heater, W2-target water temperature of the electric water heater, W1-water temperature of the electric water heater at the first time point, W3-air temperature outside the electric water heater at the first time point, K-heat transfer coefficient of the preset electric water heater and M-heat transfer area of the preset electric water heater.
Further, the method for detecting the heat transfer coefficient of the preset electric water heater comprises the following steps:
closing the door and window of the room where the electric water heater is located;
acquiring the water temperature of the electric water heater and the air temperature outside the electric water heater in real time, and controlling the heater to operate at the maximum heating power for a first preset time;
controlling the heater to be closed for a second preset time after controlling the heater to operate at the maximum heating power for a first preset time;
recording the water temperature of the electric water heater after the heater is controlled to operate for the first preset time at the maximum heating power as A1, recording the air temperature outside the electric water heater after the heater operates for the first preset time at the maximum heating power as B1, recording the water temperature of the electric water heater after the heater is controlled to be turned off for the second preset time as A2, and recording the air temperature outside the electric water heater after the heater is turned off for the second preset time as B2;
the heat transfer coefficient of the preset electric water heater is obtained according to a water temperature A1 of the electric water heater, a water temperature A2 of the electric water heater, an air temperature B1 outside the electric water heater, an air temperature B2 outside the electric water heater and a calculation formula of the heat transfer coefficient of the preset electric water heater.
Further, the preset electric water heater heat transfer coefficient calculation formula is as follows:
K=
；
k-presetting the heat transfer coefficient of the electric water heater, c-the specific heat capacity of air, M-presetting the mass of water in the inner cavity of the electric water heater, A1-controlling the water temperature of the electric water heater after the heater operates for the first preset time at the maximum heating power, A2-controlling the water temperature of the electric water heater after the heater is closed for the second preset time, B1-controlling the air temperature outside the electric water heater after the heater operates for the first preset time at the maximum heating power, B2-controlling the air temperature outside the electric water heater after the heater is closed for the second preset time, t-the second preset time, and M-presetting the heat transfer area of the electric water heater.
Further, the remote control method further comprises the following steps:
step 6, judging whether the air temperature outside the electric water heater at the first time point is less than or equal to a preset temperature, and if not, controlling the bathroom heater not to work;
step 7, if yes, determining the bathroom heater advance time corresponding to the air temperature outside the electric water heater at the first time point according to a preset corresponding relation between the air temperature outside the electric water heater and the bathroom heater advance time, recording the bathroom heater advance time corresponding to the air temperature outside the electric water heater at the first time point as the heating advance time, determining the early starting time point of the bathroom heater according to the arrival time point of the user and the heating advance time, and setting the time period from the early starting time point of the bathroom heater to the second time point as the early operation time period of the heater;
and 8, judging whether the current time is in the heater early operation time period or not, if not, controlling the bathroom heater not to work, and if so, controlling the bathroom heater to work.
Further, the remote control method further comprises the following steps:
step 6, judging whether the air temperature outside the electric water heater at the first time point is less than or equal to a preset temperature, if not, controlling the bathroom heater not to work, and if so, detecting the outdoor air temperature in real time and acquiring the maximum heating power and the bathroom target temperature of the bathroom heater;
step 7, calculating the early start time of the bathroom warmer according to the outdoor air temperature at the first time point, the target bathroom temperature, the maximum heating power of the bathroom warmer and a preset bathroom warmer operation time formula, wherein the preset bathroom warmer operation time formula is as follows:
T2=
;
t2-the time of the early start of the bathroom warmer, c-the specific heat capacity of the air, m-the air quality of the preset bathroom, F2-the maximum heating power of the bathroom warmer, S1-the outdoor air temperature at the first time point, S2-the target bathroom temperature;
step 8, the intelligent controller judges whether the time of the user arriving at home is greater than or equal to the early starting time of the bathroom warmer, if not, the bathroom warmer is immediately controlled to operate at the maximum heating power; if so, determining the early starting time point of the bathroom warmer according to the arrival time point of the user and the early starting time of the bathroom warmer, and setting the time period from the early starting time point of the bathroom warmer to the arrival time point of the user as the early starting time period of the bathroom warmer;
and 9, judging whether the current time is in a time period of early starting of the bathroom heater, if not, controlling the bathroom heater not to work, and if so, controlling the bathroom heater to operate at the maximum heating power.
The invention has the beneficial effects that:
(1) after a user sends an advance starting instruction, the advance starting time of the electric water heater is obtained according to the maximum heating power of the heater, the air temperature outside the electric water heater and the water temperature of the electric water heater, the target water temperature of the electric water heater and the preset working time of the heater, the heater is controlled to start to operate at the maximum heating power at the time point corresponding to the early starting time of the electric water heater, so that the water temperature of the electric water heater is just close to the target water temperature when a user arrives at home, the phenomenon that a large amount of electricity consumption energy is wasted after the electric water heater is started in advance due to the fact that the water temperature in the electric water heater reaches the target water temperature too early or the user cannot enjoy hot water at a comfortable temperature when the user arrives at home due to the fact that the water temperature in the electric water heater reaches the target water temperature too late is avoided, the electricity consumption energy consumption of the electric water heater in the early starting operation is effectively reduced, and;
(2) after a user sends an early start instruction, determining the early time of the bathroom heater according to the currently acquired air temperature outside the electric water heater or calculating the early start time of the bathroom heater according to the outdoor air temperature at the first time point, the target temperature of the bathroom, the maximum heating power of the bathroom heater and a preset bathroom heater running time formula, and controlling the bathroom heater to start working at the time point corresponding to the early time of the bathroom heater, so that the air temperature of the bathroom is just near the preset temperature when the user arrives at home, thereby avoiding the phenomenon that the air temperature of the bathroom reaches the preset temperature too early to cause the electricity consumption after the bathroom heater is started in advance to be greatly wasted or the air temperature of the bathroom cannot enjoy the bathroom environment with comfortable temperature when the user arrives at home, and effectively reducing the electricity consumption when the bathroom heater is started to run in advance, the comfort experience of the user is further improved.
Drawings
Fig. 1 is a block diagram of a smart home system.
Detailed Description
The invention is explained in further detail below with reference to specific embodiments and with reference to the drawings.
As shown in fig. 1, the smart home system in this embodiment includes a user terminal, an electric water heater, a bathroom heater, a second temperature sensor and an intelligent controller, the second temperature sensor and the intelligent controller are installed outside the electric water heater, the user terminal is wirelessly connected with the intelligent controller, wherein the user terminal can be connected with a cloud server through a wireless network and the intelligent controller is connected with the cloud server through a WIFI or an internet of things card to achieve wireless connection between the user terminal and the intelligent controller, the user terminal can be a smart phone or a smart wearable device for sending instructions and information to the intelligent controller, a heater for heating water and a first temperature sensor for detecting a water temperature of the electric water heater are installed inside the electric water heater, the second temperature sensor is installed on an outer surface of the electric water heater for detecting an air temperature outside the electric water heater, and the intelligent controller is respectively connected with the electric water heater and the intelligent controller, The heater, the first temperature sensor, the second temperature sensor and the bathroom warmer are electrically connected, are used for acquiring data detected by the first temperature sensor and the second temperature sensor and are also used for controlling the operation of the heater and the bathroom warmer.
The remote control method of the smart home system of this embodiment may be executed by a smart home system including a user terminal, an electric water heater, a first temperature sensor, a second temperature sensor, a bathroom warmer, and an intelligent controller, and the remote control method of the smart home system includes the following steps:
step 1, the user terminal sends an advance opening instruction and a time point when the user arrives at home to the intelligent controller.
Specifically, after determining the time point of arrival at the home, the user sends the time point of arrival at the home and the advance start command to the intelligent controller through the user terminal, for example, the user sends the time point of arrival at 18:30:00 and the advance start cooling to the intelligent controller through a mobile phone at 14:30: 00.
And 2, after receiving the advanced opening instruction, the intelligent controller acquires the target water temperature of the electric water heater and the maximum heating power of the heater, detects the water temperature of the electric water heater and the air temperature outside the electric water heater in real time, records the time point of receiving the advanced opening instruction sent by the user terminal as a first time point, records the time point of the user arriving at home as a second time point, and calculates the time interval between the first time point and the second time point.
Specifically, the maximum heating power of the heater is set in the intelligent controller in advance by a manufacturer or a user, the target water temperature of the electric water heater is preset in the intelligent controller by the user or can be sent to the intelligent control device through a user terminal, the water temperature of the electric water heater is detected by a first temperature sensor, the air temperature outside the electric water heater is detected by a second temperature sensor, the working time of the electric water heater and the bathroom warmer can be influenced by the time point of sending an advance opening instruction by the user, in the embodiment, the time point of receiving the advance opening instruction sent by the user terminal by the intelligent controller is recorded as a first time point and the time point of arriving at home by the user is recorded as a second time point, and the time interval between the two time points is calculated, for example, the intelligent controller receives the advance opening instruction at 14:30:00, the time point of arriving at home by the user is 18:30:00, the time interval between the first time point and the second time point is 4 hours.
Step 3, obtaining the air temperature outside the electric water heater and the water temperature of the electric water heater at a first time point, calculating the time required for heating the water temperature of the electric water heater from the water temperature of the electric water heater at the first time point to the target water temperature according to the maximum heating power of the heater, the air temperature outside the electric water heater at the first time point, the water temperature of the electric water heater at the first time point, the target water temperature of the electric water heater and a preset heater working time estimation formula, recording the time required for heating the water temperature of the electric water heater from the water temperature of the electric water heater at the first time point to the target water temperature as theoretical heating time of the electric water heater, wherein the theoretical heating time is also the minimum time required for heating the water temperature of the electric water heater from the water temperature of the electric water heater at the first time point to the target water temperature, and the preset heater working time estimation formula is as follows:
Q1=cm（W2- W1）；
Q2= K×M×[（W2+ W1）/2- W3] ；
Q3=F×T；
T= cm（W2- W1）/{F- K×M×[（W2+ W1）/2- W3]} ；
q1-theoretical heat required by the water temperature of the electric water heater to heat from the water temperature of the electric water heater at a first time point to a target water temperature, Q2-heat lost or transferred to the outside when the water temperature of the electric water heater is heated from the water temperature of the electric water heater at the first time point to the target water temperature, Q3-actual power consumption required by the water temperature of the electric water heater at the first time point to heat from the water temperature of the electric water heater at the first time point to the target water temperature, T-time required by the water temperature of the electric water heater at the first time point to heat from the water temperature of the electric water heater at the first time point to the target water temperature, maximum heating power of the F-heater, c-specific heat capacity of air, m-mass of water in an inner cavity of a preset electric heater, W2-target water temperature of the electric water heater, W1-water temperature of the electric water heater at the first time point, W3-air temperature outside the electric water heater at the first time point, k-presetting the heat transfer coefficient of the electric water heater, and M-presetting the heat transfer area of the electric water heater.
Specifically, the actual power consumption consumed by the electric water heater during operation or heat preservation is mainly related to the temperature rise in the inner cavity of the electric water heater and the heat transfer from the inside to the outside of the electric water heater, and because the air temperature of the bathroom where the electric water heater is located changes little within several hours, especially in cold winter, the air temperature is at a low value, for convenience of calculation, in this embodiment, the average temperature of the bathroom where the electric water heater is located within several hours before a user returns home is the air temperature outside the electric water heater at a first time point by default, and the time required for heating the water temperature of the electric water heater from the water temperature of the electric water heater at the first time point to the target water temperature is calculated according to the maximum heating power of the heater, the air temperature outside the electric water heater at the first time point, the water temperature of the electric water heater at the first time point, the target water temperature of the electric water heater and the preset heater working time estimation formula, so that the water temperature of the electric water heater is just near the target water temperature when the user arrives at home.
Step 4, judging whether the time interval between the first time point and the second time point is greater than or equal to the theoretical heating time of the electric water heater, if not, immediately controlling the heater to operate at the maximum heating power; if so, determining the advanced starting time point of the heater according to the arrival time point of the user and the theoretical heating time of the electric water heater, and setting the time period from the advanced starting time point of the heater to the arrival time point of the user as the advanced starting time period of the electric water heater.
Specifically, after the theoretical heating time of the electric water heater is determined, when the heater works is controlled according to the time interval between the first time point and the second time point and the theoretical heating time of the electric water heater, if the time interval between the first time point and the second time point is less than the theoretical heating time of the electric water heater, the situation that the water temperature of the electric water heater cannot be heated to the target water temperature when a user arrives at home is shown even if the heater works immediately, in order to reduce the waiting time after the user arrives at home as much as possible, the heater should be controlled to work immediately at the moment, if the time interval between the first time point and the second time point is more than or equal to the theoretical heating time of the electric water heater, the situation that the water temperature of the electric water heater can reach the target water temperature before the user arrives at home is shown, at the moment, the early starting time period of the electric water heater can be reasonably determined according to the time point when the user arrives at home and the theoretical heating time of the electric water heater, for example, the theoretical heating time of the electric water heater is 2.5 hours, the time point when the intelligent controller receives the early starting instruction is 14:30:00, the time point when the user arrives at home is 18:30:00, the early starting time period is 16:00: 00-18: 30:00, the intelligent controller controls the heater to be out of operation before 16:00:00, and the heater operates at the maximum heating power of 16:00: 00-18: 30: 00.
And 5, judging whether the current time is in the early starting time period of the electric water heater, if not, controlling the heater not to work, and if so, controlling the heater to operate at the maximum heating power.
Specifically, the water temperature of the electric water heater is just close to the target water temperature when a user arrives at home by controlling the heater to operate in the early starting time period of the electric water heater, so that the phenomenon that a large amount of electricity consumption energy is wasted after the electric water heater is started in advance due to the fact that the water temperature in the electric water heater reaches the target water temperature too early or the user cannot enjoy hot water at a comfortable temperature when the water temperature in the electric water heater arrives at home due to the fact that the water temperature in the electric water heater reaches the target water temperature too late is avoided.
In this embodiment, after determining the working time of the electric water heater, there are two main ways for the remote control method of the bathroom warmer, and the first remote control method includes the following steps:
and 6, judging whether the air temperature outside the electric water heater at the first time point is less than or equal to a preset temperature, and if not, controlling the bathroom heater not to work.
Specifically, the bathroom warmer is generally used in winter, namely the bathroom warmer is started when the temperature of the bathroom is low, if the temperature of air outside the electric water heater is high, the bathroom warmer can be controlled not to work, and the preset temperature is 8-12 ℃.
And 7, if so, determining the bathroom heater advance time corresponding to the air temperature outside the electric water heater at the first time point according to the preset corresponding relation between the air temperature outside the electric water heater and the bathroom heater advance time, recording the bathroom heater advance time corresponding to the air temperature outside the electric water heater at the first time point as the heating advance time, determining the early starting time point of the bathroom heater according to the arrival time point of the user and the heating advance time, and setting the time period from the early starting time point of the bathroom heater to the second time point as the early running time period of the heater.
Specifically, the lower the air temperature outside the electric water heater is, the longer the advance time of the bathroom heater is, according to the principle, the corresponding relation between the preset air temperature outside the electric water heater and the advance time of the bathroom heater can be obtained through a large number of tests, and the advance time of the bathroom heater is reasonably determined according to the corresponding relation and the current air temperature outside the electric water heater, so that the air temperature of a bathroom is just near the preset temperature when a user arrives at home, and the bathroom environment that the user cannot enjoy comfortable temperature due to the fact that the air temperature of the bathroom reaches the preset temperature too late and the electricity consumption after the bathroom heater is started in advance is greatly wasted or the air temperature of the bathroom reaches the preset temperature too late is avoided.
And 8, judging whether the current time is in the heater early operation time period or not, if not, controlling the bathroom heater not to work, and if so, controlling the bathroom heater to work.
The second remote control method includes the steps of:
and 6, judging whether the air temperature outside the electric water heater at the first time point is less than or equal to a preset temperature, if not, indicating that the air temperature of the bathroom is relatively high, controlling the bathroom heater not to work, if so, indicating that the air temperature of the bathroom is relatively low, detecting the outdoor air temperature in real time, and acquiring the maximum heating power and the target bathroom temperature of the bathroom heater.
Specifically, the bathroom warmer is generally used in winter, namely the bathroom warmer is started when the temperature of a bathroom is low, if the temperature of air outside the electric water heater is high, the bathroom warmer can be controlled not to work, the preset temperature is 8-12 ℃, if the temperature of air outside the electric water heater is low, the bathroom warmer is controlled to work, and the maximum heating power and the target temperature of the bathroom warmer can be set in the intelligent controller in advance by a user or a manufacturer.
Step 7, calculating the early start time of the bathroom warmer according to the outdoor air temperature at the first time point, the target bathroom temperature, the maximum heating power of the bathroom warmer and a preset bathroom warmer operation time formula, wherein the preset bathroom warmer operation time formula is as follows:
T2=
;
t2-the time of the early start of the bathroom warmer, c-the specific heat capacity of the air, m-the air mass in the preset bathroom, F2-the maximum heating power of the bathroom warmer, S1-the outdoor air temperature at the first time point, S2-the target temperature of the bathroom.
Specifically, because the air temperature rise of the bathroom is caused by the work of the bathroom heater, namely the air temperature rise of the bathroom can be caused after the bathroom heater operates for a period of time with the maximum heating power, the heat transfer inside and outside the bathroom is small in a short time and can be ignored, in the embodiment, a preset bathroom heater operation time formula is obtained based on the energy conservation law, the early starting time of the bathroom heater is calculated according to the outdoor air temperature at the first time point, the target bathroom temperature and the maximum heating power of the bathroom heater, and the air temperature of the bathroom is just near the target bathroom temperature when a user arrives at home.
Step 9, the intelligent controller judges whether the time of the user arriving at home is greater than or equal to the early starting time of the bathroom warmer, if not, the bathroom warmer is immediately controlled to operate at the maximum heating power; if so, determining the early starting time point of the bathroom warmer according to the arrival time point of the user and the early starting time of the bathroom warmer, and setting the time period from the early starting time point of the bathroom warmer to the arrival time point of the user as the early starting time period of the bathroom warmer.
And step 10, judging whether the current time is in a time period of early starting of the bathroom heater, if not, controlling the bathroom heater not to work, and if so, controlling the bathroom heater to operate at the maximum heating power.
Specifically, after the early start time of the bathroom warmer is determined, the early start time period of the bathroom warmer is determined according to the time point when the user arrives at home and the early start time of the bathroom warmer, the bathroom warmer is controlled to operate at the maximum heating power when the current time is within the early start time period of the bathroom warmer, the air temperature of the bathroom is just near the target temperature of the bathroom when the user arrives at home, and the power consumption of the bathroom warmer wasted due to the early start operation can be effectively reduced.
In this embodiment, the calculation of the theoretical heating time of the electric water heater involves presetting the heat transfer coefficient of the electric water heater, and although many detection mechanisms can accurately detect the heat transfer coefficient of the electric water heater, because the detection cost is high, in order to further reduce the application cost of the intelligent home system, this embodiment also provides a low-cost detection method for the heat transfer coefficient of the electric water heater, and the detection method includes the following steps:
closing the door and window of the room where the electric water heater is located;
acquiring the water temperature of the electric water heater and the air temperature outside the electric water heater in real time, and controlling the heater to operate at the maximum heating power for a first preset time;
after controlling the heater to operate at the maximum heating power for a first preset time, controlling the heater to be closed for a second preset time, wherein the first preset time is preferably 1-2 hours, and the second preset time is preferably 0.5-1 hour;
recording the water temperature of the electric water heater after the heater is controlled to operate for the first preset time at the maximum heating power as A1, recording the air temperature outside the electric water heater after the heater operates for the first preset time at the maximum heating power as B1, recording the water temperature of the electric water heater after the heater is controlled to be turned off for the second preset time as A2, and recording the air temperature outside the electric water heater after the heater is turned off for the second preset time as B2;
the heat transfer coefficient of the preset electric water heater is obtained according to a water temperature A1 of the electric water heater, a water temperature A2 of the electric water heater, an air temperature B1 outside the electric water heater, an air temperature B2 outside the electric water heater and a calculation formula of the heat transfer coefficient of the preset electric water heater, wherein the calculation formula of the heat transfer coefficient of the preset electric water heater is as follows:
K=
；
k-presetting the heat transfer coefficient of the electric water heater, c-the specific heat capacity of air, M-presetting the mass of water in the inner cavity of the electric water heater, A1-controlling the water temperature of the electric water heater after the heater operates for the first preset time at the maximum heating power, A2-controlling the water temperature of the electric water heater after the heater is closed for the second preset time, B1-controlling the air temperature outside the electric water heater after the heater operates for the first preset time at the maximum heating power, B2-controlling the air temperature outside the electric water heater after the heater is closed for the second preset time, t-the second preset time, and M-presetting the heat transfer area of the electric water heater.
In the detection method, because the door and window of the room where the electric water heater is located is closed, and the water temperature of the electric water heater is obviously higher than the outside of the electric water heater after running for a period of time, the heat in the electric water heater can be continuously transferred to the outside of the electric water heater to cause the temperature of the room where the electric water heater is located to be continuously increased, because no other heat influence factors exist, the water temperature of the electric water heater can be gradually reduced and the temperature of the room where the electric water heater is located can be gradually increased, for the convenience of calculation, in the embodiment, the average value of the water temperature A1 of the electric water heater and the water temperature A2 of the electric water heater is taken as the average temperature of the electric water heater in the second preset time, the average value of the air temperature B1 outside the electric water heater and the air temperature B2 outside the electric water heater is taken as the average temperature of the outside of the electric water heater in the second preset time, and the heat change value of the electric water in the electric water heater in the second preset time can be determined according to the water temperature reduction value, The mass of water in the inner cavity of the electric water heater and the air specific heat capacity are calculated by a formula, and the heat change value is caused by the heat transmitted from the heat in the electric water heater to the outer side of the electric water heater.
The protection scope of the present invention is not limited to the above description, and any other products with the same or similar technical solutions as or to the present invention, regardless of the shape or structure, are within the protection scope of the present invention.
Claims (7)
1. A remote control method of an intelligent home system is characterized by comprising the following steps:
step 1, a user terminal sends an advance opening instruction and a time point when a user arrives at home to an intelligent controller;
step 2, after receiving the advanced start instruction, the intelligent controller acquires target water temperature of the electric water heater and maximum heating power of the heater, detects the water temperature of the electric water heater and the air temperature outside the electric water heater in real time, records the time point of receiving the advanced start instruction sent by the user terminal as a first time point, records the time point of arrival of the user as a second time point, and calculates the time interval between the first time point and the second time point;
step 3, obtaining the air temperature and the water temperature of the electric water heater at the first time point, calculating the time required for heating the water temperature of the electric water heater from the water temperature of the electric water heater at the first time point to the target water temperature according to the maximum heating power of the heater, the air temperature at the outer side of the electric water heater at the first time point, the water temperature of the electric water heater at the first time point, the target water temperature of the electric water heater and a preset heater working time estimation formula, and recording the time required for heating the water temperature of the electric water heater from the water temperature of the electric water heater at the first time point to the target water temperature as the theoretical heating time of the electric water heater;
step 4, judging whether the time interval between the first time point and the second time point is greater than or equal to the theoretical heating time of the electric water heater, if not, immediately controlling the heater to operate at the maximum heating power; if so, determining the advanced starting time point of the heater according to the arrival time point of the user and the theoretical heating time of the electric water heater, and setting the time period from the advanced starting time point of the heater to the arrival time point of the user as the advanced starting time period of the electric water heater;
and 5, judging whether the current time is in the early starting time period of the electric water heater, if not, controlling the heater not to work, and if so, controlling the heater to operate at the maximum heating power.
2. The remote control method of the smart home system according to claim 1, wherein the preset heater operating time estimation formula is:
T= cm（W2- W1）/{F- K×M×[（W2+ W1）/2- W3]} ；
the method comprises the following steps that time required for heating the water temperature of the T-electric water heater from the water temperature of the electric water heater at a first time point to a target water temperature, the maximum heating power of the F-heater, c-specific heat capacity of air, M-mass of water in an inner cavity of a preset electric heater, W2-target water temperature of the electric water heater, W1-water temperature of the electric water heater at the first time point, W3-air temperature outside the electric water heater at the first time point, K-heat transfer coefficient of the preset electric water heater and M-heat transfer area of the preset electric water heater.
3. The remote control method of the intelligent home system according to claim 2, wherein the method for detecting the heat transfer coefficient of the preset electric water heater comprises the following steps:
closing the door and window of the room where the electric water heater is located;
acquiring the water temperature of the electric water heater and the air temperature outside the electric water heater in real time, and controlling the heater to operate at the maximum heating power for a first preset time;
controlling the heater to be closed for a second preset time after controlling the heater to operate at the maximum heating power for a first preset time;
recording the water temperature of the electric water heater after the heater is controlled to operate for the first preset time at the maximum heating power as A1, recording the air temperature outside the electric water heater after the heater operates for the first preset time at the maximum heating power as B1, recording the water temperature of the electric water heater after the heater is controlled to be turned off for the second preset time as A2, and recording the air temperature outside the electric water heater after the heater is turned off for the second preset time as B2;
the heat transfer coefficient of the preset electric water heater is obtained according to a water temperature A1 of the electric water heater, a water temperature A2 of the electric water heater, an air temperature B1 outside the electric water heater, an air temperature B2 outside the electric water heater and a calculation formula of the heat transfer coefficient of the preset electric water heater.
4. The remote control method of the intelligent home system according to claim 3, wherein the preset electric water heater heat transfer coefficient calculation formula is:
K=
；
k-presetting the heat transfer coefficient of the electric water heater, c-the specific heat capacity of air, M-presetting the mass of water in the inner cavity of the electric water heater, A1-controlling the water temperature of the electric water heater after the heater operates for the first preset time at the maximum heating power, A2-controlling the water temperature of the electric water heater after the heater is closed for the second preset time, B1-controlling the air temperature outside the electric water heater after the heater operates for the first preset time at the maximum heating power, B2-controlling the air temperature outside the electric water heater after the heater is closed for the second preset time, t-the second preset time, and M-presetting the heat transfer area of the electric water heater.
5. The remote control method of the smart home system according to claim 1, further comprising the steps of:
step 6, judging whether the air temperature outside the electric water heater at the first time point is less than or equal to a preset temperature, and if not, controlling the bathroom heater not to work;
step 7, if yes, determining the bathroom heater advance time corresponding to the air temperature outside the electric water heater at the first time point according to a preset corresponding relation between the air temperature outside the electric water heater and the bathroom heater advance time, recording the bathroom heater advance time corresponding to the air temperature outside the electric water heater at the first time point as the heating advance time, determining the early starting time point of the bathroom heater according to the arrival time point of the user and the heating advance time, and setting the time period from the early starting time point of the bathroom heater to the second time point as the early operation time period of the heater;
and 8, judging whether the current time is in the heater early operation time period or not, if not, controlling the bathroom heater not to work, and if so, controlling the bathroom heater to work.
6. The remote control method of the smart home system according to claim 1, further comprising the steps of:
step 6, judging whether the air temperature outside the electric water heater at the first time point is less than or equal to a preset temperature, if not, controlling the bathroom heater not to work, and if so, detecting the outdoor air temperature in real time and acquiring the maximum heating power and the bathroom target temperature of the bathroom heater;
step 7, calculating the early start time of the bathroom warmer according to the outdoor air temperature at the first time point, the bathroom target temperature, the maximum heating power of the bathroom warmer and a preset bathroom warmer operation time formula;
step 8, the intelligent controller judges whether the time of the user arriving at home is greater than or equal to the early starting time of the bathroom warmer, if not, the bathroom warmer is immediately controlled to operate at the maximum heating power; if so, determining the early starting time point of the bathroom warmer according to the arrival time point of the user and the early starting time of the bathroom warmer, and setting the time period from the early starting time point of the bathroom warmer to the arrival time point of the user as the early starting time period of the bathroom warmer;
and 9, judging whether the current time is in a time period of early starting of the bathroom heater, if not, controlling the bathroom heater not to work, and if so, controlling the bathroom heater to operate at the maximum heating power.
7. The remote control method of the smart home system according to claim 6, wherein the preset bathroom warmer operation time formula is as follows:
T2=
;
t2-the time of the early start of the bathroom warmer, c-the specific heat capacity of the air, m-the air mass in the preset bathroom, F2-the maximum heating power of the bathroom warmer, S1-the outdoor air temperature at the first time point, S2-the target temperature of the bathroom.
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| CN202110583079.5A CN113175757A (en) | 2021-05-27 | 2021-05-27 | Intelligent household system and remote control method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114087656A (en) * | 2021-11-18 | 2022-02-25 | 珠海格力电器股份有限公司 | Control method of pipeline heating equipment and pipeline heating system |
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| CN104977867A (en) * | 2015-06-30 | 2015-10-14 | 青岛海尔智能家电科技有限公司 | Control method and apparatus of intelligent household electrical appliances, and mobile terminal |
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Application publication date: 20210727 |