CN107449156B - Water consumption condition monitoring method for electric water heater and electronic equipment - Google Patents
Water consumption condition monitoring method for electric water heater and electronic equipment Download PDFInfo
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- CN107449156B CN107449156B CN201710680156.2A CN201710680156A CN107449156B CN 107449156 B CN107449156 B CN 107449156B CN 201710680156 A CN201710680156 A CN 201710680156A CN 107449156 B CN107449156 B CN 107449156B
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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
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- 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
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Abstract
The invention discloses a method for monitoring water consumption condition of an electric water heater and electronic equipment thereof, wherein the method comprises the following steps: acquiring the water temperature of the electric water heater, and calculating the change rate of the water temperature of the electric water heater; self-adaptively determining water using behaviors according to the water temperature change rate; judging whether the water using behavior is a bathing event or not according to the water using time and the water using duration of the water using behavior; and when the water using behavior is a bathing event, calculating the energy consumption consumed in the bathing event process. The invention learns the water consumption of the user through a self-adaptive method, greatly improves the accuracy and the practicability, and can adapt to various environments and use habits to make accurate judgment.
Description
Technical Field
The invention relates to the technical field of electric water heaters, in particular to a method for monitoring water consumption condition of an electric water heater and electronic equipment.
Background
The existing water use detection technical scheme is mainly based on the principle that the water temperature change value in a water heater cylinder is obtained periodically, and whether water is used or not is judged by detecting whether the temperature is continuously reduced.
From practical experience, it can be found that this method has two main drawbacks and two disadvantages.
The first drawback is that this solution requires temperature data to be acquired every two minutes, which however has a great effect on the lifetime of the sensor. In fact, the water heater is not in a use state for nearly 60-70% of the time, and only unnecessary loss is brought by collecting the data points. Once the sensor fails, the replacement cost is very high, which brings great trouble to the manufacturer. Meanwhile, the data are collected too frequently, so that great pressure is brought to data storage, and computing resources are wasted.
The second disadvantage is that the criterion for determining whether water is used is whether the temperature difference per unit time exceeds a certain threshold. The method has a great loophole in practical application. First, there are many events that lead to cooling, such as, for example, a temperature drop at the sensor location (at a rate much greater than the natural cooling) due to water temperature conduction in the cylinder after local heating, or sensor data errors at critical points of temperature change. Although this solution is intended to filter these noise events by varying the threshold, the cooling characteristics of the same model water heater are very different in different environments and cannot be measured by a uniform threshold, which must be determined by an adaptive method for each machine. However, this scheme is not described with respect to the calculation of the temperature difference threshold.
In addition to the above disadvantages that seriously affect the utility and reliability of the solution, there are also the following disadvantages that limit the subsequent expandability of the solution.
The first disadvantage is that the solution only determines whether there is water for bathing and estimates the time for using water, however, these data are not sufficient for understanding the usage habits of the user and the subsequent intelligence. Describing a user preference and a bathing habit also requires the user to wait for the heating time and the data of the water temperature preferred by the user, and meanwhile, in order to realize intelligent energy conservation, the energy consumption used in the bathing process also needs to be calculated accurately. All of these data cannot be acquired by this solution.
The second disadvantage is that the implementation of the solution relies on a number of thresholds, which are set manually in advance from the solution description. However, in actual environments, with the difference of the models, capacities, surrounding environments and user habits of the water heaters, the thresholds need to be individually adjusted, and the work cannot be realized manually.
Disclosure of Invention
Therefore, it is necessary to provide a method for monitoring water consumption of an electric water heater and an electronic device for solving the technical problems of monitoring water consumption of the electric water heater in the prior art.
The invention provides a method for monitoring water consumption condition of an electric water heater, which comprises the following steps:
acquiring the water temperature of the electric water heater, and calculating the change rate of the water temperature of the electric water heater;
self-adaptively determining water using behaviors according to the water temperature change rate;
judging whether the water using behavior is a bathing event or not according to the water using time and the water using duration of the water using behavior;
when the water use behavior is a bathing event, calculating the energy consumed during the bathing event.
Further, the acquiring the water temperature of the electric water heater and calculating the change rate of the water temperature of the electric water heater specifically include:
acquiring a plurality of water temperatures returned by a water temperature sensor, and calculating the change rate of the water temperatures according to the water temperatures and the time intervals of acquiring the water temperatures;
if the water using mode is a heating mode and the time interval for obtaining the water temperature is greater than a preset time interval threshold, keeping the water temperature change rate;
if the water use mode is a heating mode and the time interval for obtaining the water temperature is less than or equal to a preset time interval threshold, rejecting the water temperature change rate;
if the water use mode is a non-heating mode and the obtained water temperature is out of an interval formed by the first two water temperatures, keeping the water temperature change rate;
and if the water using mode is a non-heating mode and the obtained water temperature is within an interval formed by the first two water temperatures, rejecting the water temperature change rate.
Further, the adaptively determining the water using behavior according to the water temperature change rate specifically includes:
dividing a plurality of water temperature change rates into a plurality of sets according to the water temperature that produces the water temperature change rate;
performing cluster analysis calculation on each set, and distinguishing the change rate of the non-water cooling type water temperature and the change rate of the water cooling type water temperature;
generating a corresponding non-water-use behavior for each non-water-use cooling water temperature change rate, wherein the water use parameters of the non-water-use behaviors are the water use time, the water use duration and the water temperature of the corresponding non-water-use cooling water temperature change rate;
and generating a corresponding water use behavior for each water use cooling type water temperature change rate, wherein the water use parameters of the water use behavior are the water use time, the water use duration and the water temperature of the corresponding water use cooling type water temperature change rate.
Further, the method comprises the following steps:
the judging whether the water using behavior is a bathing event according to the water using time and the water using duration of the water using behavior specifically comprises the following steps: judging whether the water using behavior is a bathing event or not according to the water using time and the water using duration of the water using behavior;
the self-adaptive determination of the water using behavior according to the water temperature change rate specifically comprises the following steps: calculating the heating efficiency of the electric water heater according to the water using parameters of the non-water behaviors, and calculating the water using heat of the bathing event according to the heating efficiency of the electric water heater and the water using parameters of the bathing event.
Still further, the acquiring the water temperature of the electric water heater specifically includes:
when the water temperature of the water temperature sensor of the electric water heater is detected to be changed, the water temperature detected by the water temperature sensor is obtained.
The invention provides an electronic device for monitoring water condition of an electric water heater, which comprises:
at least one processor; and the number of the first and second groups,
a memory communicatively coupled to the at least one processor; wherein the content of the first and second substances,
the memory stores instructions executable by the one processor to cause the at least one processor to:
acquiring the water temperature of the electric water heater, and calculating the change rate of the water temperature of the electric water heater;
self-adaptively determining water using behaviors according to the water temperature change rate;
judging whether the water using behavior is a bathing event or not according to the water using time and the water using duration of the water using behavior;
when the water use behavior is a bathing event, calculating the energy consumed during the bathing event.
Further, the acquiring the water temperature of the electric water heater and calculating the change rate of the water temperature of the electric water heater specifically include:
acquiring a plurality of water temperatures returned by a water temperature sensor, and calculating the change rate of the water temperatures according to the water temperatures and the time intervals of acquiring the water temperatures;
if the water using mode is a heating mode and the time interval for obtaining the water temperature is greater than a preset time interval threshold, keeping the water temperature change rate;
if the water use mode is a heating mode and the time interval for obtaining the water temperature is less than or equal to a preset time interval threshold, rejecting the water temperature change rate;
if the water use mode is a non-heating mode and the obtained water temperature is out of an interval formed by the first two water temperatures, keeping the water temperature change rate;
and if the water using mode is a non-heating mode and the obtained water temperature is within an interval formed by the first two water temperatures, rejecting the water temperature change rate.
Further, the adaptively determining the water using behavior according to the water temperature change rate specifically includes:
dividing a plurality of water temperature change rates into a plurality of sets according to the water temperature that produces the water temperature change rate;
performing cluster analysis calculation on each set, and distinguishing the change rate of the non-water cooling type water temperature and the change rate of the water cooling type water temperature;
generating a corresponding non-water-use behavior for each non-water-use cooling water temperature change rate, wherein the water use parameters of the non-water-use behaviors are the water use time, the water use duration and the water temperature of the corresponding non-water-use cooling water temperature change rate;
and generating a corresponding water use behavior for each water use cooling type water temperature change rate, wherein the water use parameters of the water use behavior are the water use time, the water use duration and the water temperature of the corresponding water use cooling type water temperature change rate.
Further, the method comprises the following steps:
the judging whether the water using behavior is a bathing event according to the water using time and the water using duration of the water using behavior specifically comprises the following steps: judging whether the water using behavior is a bathing event or not according to the water using time and the water using duration of the water using behavior;
the self-adaptive determination of the water using behavior according to the water temperature change rate specifically comprises the following steps: calculating the heating efficiency of the electric water heater according to the water using parameters of the non-water behaviors, and calculating the water using heat of the bathing event according to the heating efficiency of the electric water heater and the water using parameters of the bathing event.
Still further, the acquiring the water temperature of the electric water heater specifically includes:
when the water temperature of the water temperature sensor of the electric water heater is detected to be changed, the water temperature detected by the water temperature sensor is obtained.
The invention learns the water consumption of the user through a self-adaptive method, greatly improves the accuracy and the practicability, and can adapt to various environments and use habits to make accurate judgment.
Drawings
FIG. 1 is a flow chart of the operation of a method for monitoring water consumption of an electric water heater according to the present invention;
FIG. 2 is a schematic diagram showing the temperature change of the apparatus without heating;
FIG. 3 is a flow chart of the water temperature change rate calculation according to the present invention;
FIG. 4 is a schematic view of natural cooling;
FIG. 5 is a schematic diagram illustrating the classification of water temperature and temperature variation;
FIG. 6 is a schematic diagram of the distribution of water usage intervals for a user;
FIG. 7 is a flow chart of a water usage heat calculation;
fig. 8 is a schematic diagram of a hardware structure of an electronic device for monitoring water consumption of an electric water heater according to the present invention.
Detailed Description
The invention is described in further detail below with reference to the figures and specific examples.
Fig. 1 shows a flow chart of a method for monitoring water consumption of an electric water heater according to the present invention, which includes:
s101, acquiring the water temperature of the electric water heater, and calculating the change rate of the water temperature of the electric water heater;
step S102, determining water using behaviors in a self-adaptive mode according to the water temperature change rate;
step S103, judging whether the water using behavior is a bathing event or not according to the water using time and the water using duration of the water using behavior;
and step S104, when the water using behavior is a bathing event, calculating the energy consumed in the bathing event process.
Specifically, the temperature of water is obtained through a temperature sensor of the electric water heater, the behavior of water consumption at a certain time can be judged according to the change rate, and whether the bathing event is a bathing event or not is judged according to the occurrence time point and the length of the behavior of water consumption. The water consumption calculation is used for calculating the energy consumed in the bathing event process. A complete description of the water use event includes the time point of water use, water usage, water temperature, energy consumption, etc. key parameters.
The invention learns the water consumption of the user through a self-adaptive method, greatly improves the accuracy and the practicability, and can adapt to various environments and use habits to make accurate judgment.
In one embodiment, the acquiring the water temperature of the electric water heater and calculating the change rate of the water temperature of the electric water heater specifically include:
acquiring a plurality of water temperatures returned by a water temperature sensor, and calculating the change rate of the water temperatures according to the water temperatures and the time intervals of acquiring the water temperatures;
if the water using mode is a heating mode and the time interval for obtaining the water temperature is greater than a preset time interval threshold, keeping the water temperature change rate;
if the water use mode is a heating mode and the time interval for obtaining the water temperature is less than or equal to a preset time interval threshold, rejecting the water temperature change rate;
if the water use mode is a non-heating mode and the obtained water temperature is out of an interval formed by the first two water temperatures, keeping the water temperature change rate;
and if the water using mode is a non-heating mode and the obtained water temperature is within an interval formed by the first two water temperatures, rejecting the water temperature change rate.
In order to judge the water consumption state, firstly, the change rate of the water temperature in the cylinder needs to be accurately judged
However, due to the sensor shaking noise, the delayed sensing of the water temperature change and the like, the raw data needs to be cleaned and sorted.
The shaking condition of the sensor has two conditions, the first condition occurs in the process that the equipment is not heated and the water temperature in the cylinder is naturally cooled. The temperature changes slowly (typically over about 15 minutes) and also changes back and forth between adjacent temperatures (between 30 and 31 degrees as shown in fig. 2).
The processing method comprises recording temperature interval [ T ] of two continuous points under non-heating state0，T1]For the temperature T2 at the subsequent point, it is only recorded when the value of T2 is outside the preceding temperature interval, i.e.
Otherwise, filtering out. The second situation occurs in equipment heating, due to the rapid increase of the water temperature in the cylinder, the sensor will have transient induction errors, the temperature conversion frequency is extremely high at the moment, and delta t is less than 1s, so the frequency filtering can be applied to eliminate the transient induction errors
The reason for the delay in water temperature is that the sensor returns discrete data, however, the water temperature is a continuous variable, so there is a situation where the water temperature is decreased from 37 degrees to 36.1 degrees with time t0, then heated, and reaches 38 degrees after time t1, but the result from the data from the temperature sensor is that the water heater is heated with time t0+ t 1. The processing method is to introduce equipment heating data and set a breakpoint to carry out change rate statistics when heating is started.
As shown in FIG. 3, the water temperature data is first processed by S301modeJudging whether the water heater is in a heating mode, if so, executing step S302, judging whether the water heater is noise through the change time delta t, if not, executing step S303, and if not, executing step S303
To judge whether it is noise。
In one embodiment, the adaptively determining the water usage behavior according to the water temperature change rate specifically includes:
dividing a plurality of water temperature change rates into a plurality of sets according to the water temperature that produces the water temperature change rate;
performing cluster analysis calculation on each set, and distinguishing the change rate of the non-water cooling type water temperature and the change rate of the water cooling type water temperature;
generating a corresponding non-water-use behavior for each non-water-use cooling water temperature change rate, wherein the water use parameters of the non-water-use behaviors are the water use time, the water use duration and the water temperature of the corresponding non-water-use cooling water temperature change rate;
and generating a corresponding water use behavior for each water use cooling type water temperature change rate, wherein the water use parameters of the water use behavior are the water use time, the water use duration and the water temperature of the corresponding water use cooling type water temperature change rate.
There are three causes of the temperature drop of water in the cylinder, corresponding to different dropping rates.
The first is heat conduction between the temperature of water in the cylinder and the outside, which can also be called natural cooling, and the descending rate is exponential to the temperature difference between the two (as shown in fig. 4).
The second is in-cylinder heat conduction due to different heating positions of in-cylinder water temperature, which is generally the case when the water temperature is high. The descending speed is faster than the natural temperature reduction.
The last one is temperature reduction caused by water, the reduction rate is the fastest theoretically, however, due to the fact that water temperature change is delayed and sensed, when the water consumption is small, the difference between the comprehensive reduction rate and the natural temperature reduction rate is not obvious.
For the above actual data, the present embodiment uses a hierarchical clustering method to perform water usage determination.
Firstly, aiming at the characteristics of natural cooling index change and the phenomenon of common in-cylinder heat conduction of high water temperature, temperature change points at different water temperatures are classified (for example, more than 65 ℃ is one type, 45-65 ℃ is one type, and less than 45 ℃ is one type), clustering analysis is carried out inside each set (for example, as shown in fig. 5), and two types of data points of non-water cooling and water cooling are distinguished.
Taking the temperature-decreasing data points above 60 degrees in fig. 5 as an example, the clustering algorithm will automatically divide the data into two types of data centered at-1 and centered at-5. Wherein the cut point is-3. When the certain measurement rate r is more than or equal to-3, judging the data point as natural cooling; if r < -3 means the cooling rate is faster, the data point is determined to be water use.
Specifically, the determination of the bathing event in step S103 is made by integrating the water use data points, and the bathing event is a long-time water use behavior, which may be accompanied by a short stop of water use, so that an algorithm is required to determine the water use pattern of the bath. However, the bathing behavior of each user is not consistent, so the algorithm needs to perform adaptive learning according to the existing data of each device to find the critical point of the bathing interval time. Fig. 6 is a water consumption interval time distribution diagram of a user, and it can be seen that the selection interval Tshreshold1 is more appropriate when the maximum bathing interval is 150 seconds.
The visible classification boundary is clearer, and the shower pause time can be determined by using a clustering method. By connecting the water consumption points in the pause time interval, the bathing event of the user can be obtained. The specific calculation of the bathing event is shown in fig. 9, and includes:
step S901, acquiring water temperature data, judging whether the water temperature data is water use data, if the water use data is water use data, indicating that a user uses water, executing step S902, and if the water use data is water use data, indicating that the user stops using water, executing step S903;
step S902 of determining whether the water use Flag0 is equal to 0, if so, recording the current time as the first time of water use t0, and setting the pause Flag1 to 0, and re-executing step S901, otherwise, determining whether the pause Flag1 is equal to 1, if the pause Flag1 is equal to 1, indicating that the water use is paused, setting the pause Flag1 to 0, re-executing step S901, and if the pause Flag1 is equal to 0, directly executing step S901;
step S903, if the water mark Flag0 is not equal to 1, indicating that no water is currently recorded, executing step S901, otherwise, indicating that water is currently recorded, executing step S904;
step S904, if the pause Flag1 is equal to 0, setting the pause Flag1 to 1, recording the current time as the pause water use start time t1, and re-executing step S901, otherwise executing step S905;
step S905, calculating the pause time length T1 equal to the current time T2 — the pause water use start time T1, if T1> Tthreshold1, it indicates that the maximum bath interval time is exceeded, step S906 is executed, otherwise, it indicates that the maximum water use interval is not yet exceeded, and step S901 is executed again;
and step S906, calculating whether t2-t0 is larger than Tthreshold0, if so, indicating that the water using time is long enough to be a bathing event, otherwise, judging the water using event to be a short-time water using event, and setting a water using Flag0 to be 0.
Tshreshold0 in the figure is the minimum length of time of the bathing event, defined as 180 seconds, which will vary from case to case. Tshhreshold 1 is the determination of the time between showers, obtained statistically. A complete bathing event is defined by the start and end, i.e. [ t0, t2 ].
In one embodiment:
the judging whether the water using behavior is a bathing event according to the water using time and the water using duration of the water using behavior specifically comprises the following steps: judging whether the water using behavior is a bathing event or not according to the water using time and the water using duration of the water using behavior;
the self-adaptive determination of the water using behavior according to the water temperature change rate specifically comprises the following steps: calculating the heating efficiency of the electric water heater according to the water using parameters of the non-water behaviors, and calculating the water using heat of the bathing event according to the heating efficiency of the electric water heater and the water using parameters of the bathing event.
The calculation formula of the heat quantity of the object is as follows,
ΔQ＝C*M*ΔT
where Δ Q is the heat change value, Δ T is the temperature change value, M is the mass of water in the tank, and C is the specific heat capacity of the water, all known variables. Therefore, the total heat change value in the water cylinder can be obtained, and the total heat change formula is that delta Q is Qu+Qh+Qd
Wherein QhFor heating heat, QdFor natural cooling of heat, QuIs the amount of heat used by the user.
Wherein
Qh＝θP*Δt
P is the current heating power of the water heater, and delta t is the total heating time and can be obtained according to the state of the water heater. θ is the actual efficiency of heating, and is an unknown quantity that is different according to the design and the use state of the equipment and needs to be solved.
Meanwhile, the natural loss heat quantity is calculated by the formula
Wherein t is0And t1Representing a start time and an end time, Rd(T) is the natural cooling rate which is a function of the water temperature of the water tank, and is a measured value of real data, namely a water temperature change rate value r in the third graph
Thus, without user water (Q)u0), Δ Q ═ Q) can be obtainedh+Qd
Thereby obtaining the unknown quantity theta
After the heating efficiency theta is obtained, the water consumption energy of the user can be obtained through calculation
Qu＝ΔQ-Qh-Qd。
The specific calculation flow is shown in fig. 7:
step S701, extracting water use parameters of historical non-water use behaviors;
step S702, calculating the heating efficiency of the electric water heater with the formula;
step S703, acquiring water use parameters of the bathing event;
step S704, calculating the water usage heat of the bathing event using the heating efficiency of the electric water heater and the water usage parameter of the bathing event according to the above formula.
In one embodiment, the acquiring the water temperature of the electric water heater specifically includes:
when the water temperature of the water temperature sensor of the electric water heater is detected to be changed, the water temperature detected by the water temperature sensor is obtained.
The sensor service life is prolonged by the mode of retransmitting data through state change, and the database pressure is reduced.
Fig. 8 is a schematic diagram of a hardware structure of an electronic device for monitoring water consumption of an electric water heater according to the present invention, which includes:
at least one processor 801; and the number of the first and second groups,
a memory 802 communicatively coupled to the at least one processor 801; wherein the content of the first and second substances,
the memory 802 stores instructions executable by the one processor to be executed by the at least one processor 801 to enable the at least one processor 801 to:
acquiring the water temperature of the electric water heater, and calculating the change rate of the water temperature of the electric water heater;
self-adaptively determining water using behaviors according to the water temperature change rate;
judging whether the water using behavior is a bathing event or not according to the water using time and the water using duration of the water using behavior;
when the water use behavior is a bathing event, calculating the energy consumed during the bathing event.
In fig. 8, a processor 802 is illustrated as an example.
The server may further include: an input device 803 and an output device 804.
The processor 801, the memory 802, the input device 803, and the display device 804 may be connected by a bus or other means, and are illustrated as being connected by a bus.
The memory 802, as a non-volatile computer-readable storage medium, may be used to store non-volatile software programs, non-volatile computer-executable programs, and modules, such as program instructions/modules corresponding to the water usage monitoring method of the electric water heater in the embodiment of the present application, for example, the method flow shown in fig. 1. The processor 801 executes various functional applications and data processing by running nonvolatile software programs, instructions and modules stored in the memory 802, so as to implement the water usage monitoring method of the electric water heater in the above embodiments.
The memory 802 may include a storage program area and a storage data area, wherein the storage program area may store an operating system, an application program required for at least one function; the storage data area may store data created according to the use of the water condition monitoring method for the electric water heater, and the like. Further, the memory 802 may include high speed random access memory and may also include non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other non-volatile solid state storage device. In some embodiments, the memory 802 optionally includes memory located remotely from the processor 801, which may be connected via a network to a device that performs the method of water usage monitoring of an electric water heater. Examples of such networks include, but are not limited to, the internet, intranets, local area networks, mobile communication networks, and combinations thereof.
The input device 803 may receive input from a user click and generate signal inputs related to user settings and function controls for the water condition monitoring method of the electric water heater. The display device 804 may include a display screen or the like.
When the one or more modules are stored in the memory 802, the method for monitoring water usage of an electric water heater in any of the above-described method embodiments is performed when executed by the one or more processors 801.
In one embodiment, the acquiring the water temperature of the electric water heater and calculating the change rate of the water temperature of the electric water heater specifically include:
acquiring a plurality of water temperatures returned by a water temperature sensor, and calculating the change rate of the water temperatures according to the water temperatures and the time intervals of acquiring the water temperatures;
if the water using mode is a heating mode and the time interval for obtaining the water temperature is greater than a preset time interval threshold, keeping the water temperature change rate;
if the water use mode is a heating mode and the time interval for obtaining the water temperature is less than or equal to a preset time interval threshold, rejecting the water temperature change rate;
if the water use mode is a non-heating mode and the obtained water temperature is out of an interval formed by the first two water temperatures, keeping the water temperature change rate;
and if the water using mode is a non-heating mode and the obtained water temperature is within an interval formed by the first two water temperatures, rejecting the water temperature change rate.
In one embodiment, the adaptively determining the water usage behavior according to the water temperature change rate specifically includes:
dividing a plurality of water temperature change rates into a plurality of sets according to the water temperature that produces the water temperature change rate;
performing cluster analysis calculation on each set, and distinguishing the change rate of the non-water cooling type water temperature and the change rate of the water cooling type water temperature;
generating a corresponding non-water-use behavior for each non-water-use cooling water temperature change rate, wherein the water use parameters of the non-water-use behaviors are the water use time, the water use duration and the water temperature of the corresponding non-water-use cooling water temperature change rate;
and generating a corresponding water use behavior for each water use cooling type water temperature change rate, wherein the water use parameters of the water use behavior are the water use time, the water use duration and the water temperature of the corresponding water use cooling type water temperature change rate.
In one embodiment:
the judging whether the water using behavior is a bathing event according to the water using time and the water using duration of the water using behavior specifically comprises the following steps: judging whether the water using behavior is a bathing event or not according to the water using time and the water using duration of the water using behavior;
the self-adaptive determination of the water using behavior according to the water temperature change rate specifically comprises the following steps: calculating the heating efficiency of the electric water heater according to the water using parameters of the non-water behaviors, and calculating the water using heat of the bathing event according to the heating efficiency of the electric water heater and the water using parameters of the bathing event.
In one embodiment, the acquiring the water temperature of the electric water heater specifically includes:
when the water temperature of the water temperature sensor of the electric water heater is detected to be changed, the water temperature detected by the water temperature sensor is obtained.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (8)
1. A method for monitoring water consumption condition of an electric water heater is characterized by comprising the following steps:
acquiring the water temperature of the electric water heater, and calculating the change rate of the water temperature of the electric water heater;
self-adaptively determining water using behaviors according to the water temperature change rate;
judging whether the water using behavior is a bathing event or not according to the water using time and the water using duration of the water using behavior;
when the water using behavior is a bathing event, calculating energy consumed in the bathing event process;
the acquiring the water temperature of the electric water heater and calculating the water temperature change rate of the electric water heater specifically comprise:
acquiring a plurality of water temperatures returned by a water temperature sensor, and calculating the change rate of the water temperatures according to the water temperatures and the time intervals of acquiring the water temperatures;
if the water using mode is a heating mode and the time interval for obtaining the water temperature is greater than a preset time interval threshold value, keeping the water temperature change rate;
if the water use mode is a heating mode and the time interval for obtaining the water temperature is less than or equal to a preset time interval threshold value, rejecting the water temperature change rate;
if the water use mode is a non-heating mode and the obtained water temperature is out of the interval formed by the first two water temperatures, keeping the water temperature change rate;
and if the water using mode is a non-heating mode and the obtained water temperature is within an interval formed by the first two water temperatures, rejecting the water temperature change rate.
2. The method for monitoring the water consumption condition of the electric water heater according to claim 1, wherein the adaptively determining the water consumption behavior according to the water temperature change rate specifically comprises:
dividing a plurality of water temperature change rates into a plurality of sets according to the water temperature that produces the water temperature change rate;
performing cluster analysis calculation on each set, and distinguishing the change rate of the non-water cooling type water temperature and the change rate of the water cooling type water temperature;
generating a corresponding non-water-use behavior for each non-water-use cooling water temperature change rate, wherein the water use parameters of the non-water-use behaviors are the water use time, the water use duration and the water temperature of the corresponding non-water-use cooling water temperature change rate;
and generating a corresponding water use behavior for each water use cooling type water temperature change rate, wherein the water use parameters of the water use behavior are the water use time, the water use duration and the water temperature of the corresponding water use cooling type water temperature change rate.
3. The method for monitoring the water consumption condition of the electric water heater according to claim 2, characterized in that: the judging whether the water using behavior is a bathing event according to the water using time and the water using duration of the water using behavior specifically comprises the following steps: judging whether the water using behavior is a bathing event or not according to the water using time and the water using duration of the water using behavior;
the self-adaptive determination of the water using behavior according to the water temperature change rate specifically comprises the following steps: calculating the heating efficiency of the electric water heater according to the water using parameters of the non-water behaviors, and calculating the water using heat of the bathing event according to the heating efficiency of the electric water heater and the water using parameters of the bathing event.
4. The method for monitoring the water consumption condition of the electric water heater according to any one of claims 1 to 3, wherein the acquiring of the water temperature of the electric water heater specifically comprises:
when the water temperature of the water temperature sensor of the electric water heater is detected to be changed, the water temperature detected by the water temperature sensor is obtained.
5. An electronic device for monitoring water consumption of an electric water heater, comprising:
at least one processor; and the number of the first and second groups,
a memory communicatively coupled to the at least one processor; wherein the content of the first and second substances,
the memory stores instructions executable by the one processor to cause the at least one processor to:
acquiring the water temperature of the electric water heater, and calculating the change rate of the water temperature of the electric water heater;
self-adaptively determining water using behaviors according to the water temperature change rate;
judging whether the water using behavior is a bathing event or not according to the water using time and the water using duration of the water using behavior;
when the water using behavior is a bathing event, calculating energy consumed in the bathing event process;
the acquiring the water temperature of the electric water heater and calculating the water temperature change rate of the electric water heater specifically comprise:
acquiring a plurality of water temperatures returned by a water temperature sensor, and calculating the change rate of the water temperatures according to the water temperatures and the time intervals of acquiring the water temperatures;
if the water using mode is a heating mode and the time interval for obtaining the water temperature is greater than a preset time interval threshold value, keeping the water temperature change rate;
if the water use mode is a heating mode and the time interval for obtaining the water temperature is less than or equal to a preset time interval threshold value, rejecting the water temperature change rate;
if the water use mode is a non-heating mode and the obtained water temperature is out of the interval formed by the first two water temperatures, keeping the water temperature change rate;
and if the water using mode is a non-heating mode and the obtained water temperature is within an interval formed by the first two water temperatures, rejecting the water temperature change rate.
6. The electronic device for monitoring water consumption of an electric water heater according to claim 5, wherein the adaptively determining the water consumption behavior according to the water temperature change rate specifically comprises:
dividing a plurality of water temperature change rates into a plurality of sets according to the water temperature that produces the water temperature change rate;
performing cluster analysis calculation on each set, and distinguishing the change rate of the non-water cooling type water temperature and the change rate of the water cooling type water temperature;
generating a corresponding non-water-use behavior for each non-water-use cooling water temperature change rate, wherein the water use parameters of the non-water-use behaviors are the water use time, the water use duration and the water temperature of the corresponding non-water-use cooling water temperature change rate;
and generating a corresponding water use behavior for each water use cooling type water temperature change rate, wherein the water use parameters of the water use behavior are the water use time, the water use duration and the water temperature of the corresponding water use cooling type water temperature change rate.
7. The electronic device for monitoring water consumption of electric water heater according to claim 6, wherein:
the judging whether the water using behavior is a bathing event according to the water using time and the water using duration of the water using behavior specifically comprises the following steps: judging whether the water using behavior is a bathing event or not according to the water using time and the water using duration of the water using behavior;
the self-adaptive determination of the water using behavior according to the water temperature change rate specifically comprises the following steps: calculating the heating efficiency of the electric water heater according to the water using parameters of the non-water behaviors, and calculating the water using heat of the bathing event according to the heating efficiency of the electric water heater and the water using parameters of the bathing event.
8. The electronic device for monitoring water consumption of an electric water heater according to any one of claims 5 to 7, wherein the acquiring of the water temperature of the electric water heater specifically comprises:
when the water temperature of the water temperature sensor of the electric water heater is detected to be changed, the water temperature detected by the water temperature sensor is obtained.
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| CN109990477A (en) * | 2017-12-29 | 2019-07-09 | 芜湖美的厨卫电器制造有限公司 | Electric heater and its control method, system and server |
| CN108613389B (en) * | 2018-05-02 | 2020-08-18 | 芜湖美的厨卫电器制造有限公司 | Water consumption analysis method and system for water heater and computer equipment |
| CN109323459B (en) * | 2018-09-06 | 2020-09-29 | 珠海格力电器股份有限公司 | Waterway system and control method thereof |
| CN111256370B (en) * | 2018-11-30 | 2021-06-15 | 宁波方太厨具有限公司 | Water heater control method capable of resisting self-starting |
| CN110399901B (en) * | 2019-06-27 | 2021-05-14 | 深圳数联天下智能科技有限公司 | Method, device, equipment and medium for acquiring temperature consumption of water |
| CN110398068B (en) * | 2019-07-05 | 2022-03-18 | 芜湖美的厨卫电器制造有限公司 | Water heater and data acquisition method and computer-readable storage medium thereof |
| CN112984752A (en) * | 2019-12-02 | 2021-06-18 | 佛山市云米电器科技有限公司 | Control method, system, device and storage medium for air conditioning device |
| CN110822726B (en) * | 2019-12-03 | 2021-03-12 | 美的集团股份有限公司 | Water consumption determination method and device, water heater and electronic equipment |
| CN112728766B (en) * | 2020-12-31 | 2022-03-25 | 浙江中广电器股份有限公司 | Water storage type water heater, controller and control method thereof |
| CN114294824B (en) * | 2021-12-15 | 2023-05-23 | 广东芬尼克兹节能设备有限公司 | Water habit analysis method and device, terminal equipment and storage medium |
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