An energy-saving control method, device and storage medium for a central air conditioner

Abstract

The application discloses an energy-saving control method and device for a central air conditioner and a storage medium, relates to the technical field of air conditioner control, and comprises the following steps: acquiring a motion track and a personnel activity area based on a human body infrared sensor; placing a temperature sensor and acquiring multiple temperature diffusion parameters of the central air conditioner; and controlling the central air conditioner based on the multiple temperature diffusion parameters; the application is used to solve the problem that, in the existing energy-saving control method of the central air conditioner, when the personnel distribution or the activity range in the space where the central air conditioner is located is relatively fixed, the control timing of the central air conditioner cannot be accurately determined, the central air conditioner still operates at the original power after effectively serving the personnel, and the energy consumption is large.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of air conditioner control, in particular to an energy-saving control method, device and storage medium for central air conditioner. BACKGROUND

[0002] The central air conditioner is an air conditioning system composed of one or more cold and heat source systems and multiple air conditioning systems, which is different from the traditional refrigerant type air conditioner, and can centrally process air to achieve comfortable environmental requirements; the energy-saving control of the central air conditioner mainly includes intelligent temperature control, intelligent timing on-off, intelligent wind speed regulation, load prediction and optimized scheduling, and fault detection and early warning.

[0003] In the existing energy-saving control method for central air conditioner, the existing data in the environment where the central air conditioner is located is usually input into the model to simulate the start of the central air conditioner after the model is established based on various data of the central air conditioner, and the control method of the central air conditioner is obtained through the data obtained by simulation and artificial intelligence model, so as to realize the control of the central air conditioner. Although this improved method can improve the accuracy and effectiveness of the central air conditioner control, when the personnel distribution or activity range in the space where the central air conditioner is located is fixed, only based on the data simulation of the environmental data, the control time of the central air conditioner cannot be accurately determined when the central air conditioner can effectively serve the personnel in the space, resulting in that although the accuracy of the control of the central air conditioner in terms of temperature and humidity or running time can be improved, the control time of the central air conditioner cannot be obtained, causing the central air conditioner to still run at the original power after completing the effective service to the personnel, resulting in the problem of large energy consumption. For example, in the patent application with the publication number CN116085937A, an intelligent central air conditioner energy-saving control method and system are disclosed, which realizes accurate and efficient control of the central air conditioner by predicting the running time of the central air conditioner under the optimal working condition in each actual situation based on a time length prediction model. Other improvements for energy-saving control of central air conditioner are usually improvements in personnel flow. This improvement method can only control the central air conditioner based on the flow of personnel, and still cannot solve the above-mentioned problems. Therefore, it is necessary to improve the existing energy-saving control method for central air conditioner. SUMMARY

[0004] The present application aims to at least solve one of the technical problems in the prior art, by proposing an energy-saving control method, device and storage medium for central air conditioner, to solve the problem in the existing energy-saving control method for central air conditioner that when the personnel distribution or activity range in the space where the central air conditioner is located is fixed, the control time of the central air conditioner cannot be accurately determined, causing the central air conditioner to still run at the original power after completing the effective service to the personnel, resulting in large energy consumption.

[0005] To achieve the above object, in a first aspect, the application provides an energy-saving control method for a central air conditioner, comprising the following steps:

[0006] A space regulated by the central air conditioner in temperature is referred to as a temperature-controlled space; a plan view of the temperature-controlled space is referred to as a temperature-controlled plan view; the motion trajectories of all persons in the temperature-controlled space are obtained based on the human infrared sensor of the central air conditioner, and the person activity area is obtained in the temperature-controlled plan view based on the motion trajectories;

[0007] The temperature sensor is placed in the temperature-controlled space based on the person activity area, and the multi-temperature diffusion parameters of the central air conditioner are obtained based on the temperature sensor;

[0008] The energy-saving control of the central air conditioner is performed at the start of the central air conditioner based on the multi-temperature diffusion parameters.

[0009] Further, obtaining the motion trajectories of all persons in the temperature-controlled space based on the human infrared sensor of the central air conditioner, and obtaining the person activity area in the temperature-controlled plan view based on the motion trajectories comprises:

[0010] The size data of the temperature-controlled plan view is obtained, a plan rectangular coordinate system with the unit of X axis and Y axis being meters is established, and is referred to as a plan analysis coordinate system; the temperature-controlled plan view is placed in the first quadrant of the plan analysis coordinate system based on the size data of the temperature-controlled plan view;

[0011] The motion trajectories of all persons in the temperature-controlled space are obtained and stored based on the human infrared sensor of the central air conditioner, and the recorded trajectory data is divided by day, and is respectively referred to as trajectory data GS1 to trajectory data GS c , wherein c is the number of days in which the motion trajectories of persons in the temperature-controlled space are recorded by the human infrared sensor of the central air conditioner;

[0012] For any one trajectory data GS v , all motion trajectories in the trajectory data GS v are drawn in the temperature-controlled plan view, and the motion trajectories in the temperature-controlled plan view are respectively referred to as to-be-analyzed trajectories DG1 to to-be-analyzed trajectories DG m , wherein v is a positive integer less than or equal to c and greater than or equal to 1.

[0013] Further, obtaining the motion trajectories of all persons in the temperature-controlled space based on the human infrared sensor of the central air conditioner, and obtaining the person activity area in the temperature-controlled plan view based on the motion trajectories comprises:

[0014] When all to-be-analyzed trajectories DG do not have intersection points, for any one to-be-analyzed trajectory DG b , the to-be-analyzed trajectory DG bTwo endpoints of the two endpoints are respectively recorded as edge point A and edge point B, and the adjacent points of edge point A and edge point B are obtained, wherein the adjacent points are the endpoints closest to edge point A or edge point B in the trajectory DG b Except the trajectory DG to be analyzed, b is a positive integer less than or equal to m and greater than or equal to 1;

[0015] Obtain the edge points of all trajectories DG to be analyzed and the adjacent points of all edge points, connect the edge points and the adjacent points corresponding to the edge points, and record the line segment connecting the edge points and the adjacent points corresponding to the edge points as the edge adjacent line;

[0016] When all edge adjacent lines and all trajectories DG to be analyzed form a closed region, the closed region is recorded as a personnel activity region; when all edge adjacent lines and all trajectories DG to be analyzed form a non-closed region, a minimum circle capable of wrapping all edge adjacent lines and all trajectories DG to be analyzed in the planar analysis coordinate system is obtained, recorded as a trajectory wrapping circle; the region of the trajectory wrapping circle coinciding with the temperature control plan is recorded as the personnel activity region.

[0017] Further, based on the human infrared sensor of the central air conditioner, the motion trajectories of all personnel in the temperature control space are obtained, and based on the motion trajectories, the personnel activity region in the temperature control plan is obtained, which further comprises:

[0018] When all trajectories DG to be analyzed have intersection points, the intersection points of the trajectories DG to be analyzed are recorded as trajectory intersection points; a minimum circle capable of wrapping all trajectory intersection points in the planar analysis coordinate system is obtained, recorded as an intersection point wrapping circle; the region of the intersection point wrapping circle coinciding with the temperature control plan is recorded as an intersection point region; for any one trajectory DG to be analyzed, the point in the trajectory DG to be analyzed farthest from the center of the intersection point region is recorded as a trajectory far point, a tangent line is drawn from the trajectory far point to the intersection point region, and the region between the two tangent lines and the intersection point region is recorded as a trajectory associated region;

[0019] Obtain the trajectory associated region of all trajectories DG to be analyzed; the region obtained by merging the trajectory region of all trajectories DG to be analyzed and the intersection point region is recorded as a personnel activity region.

[0020] Further, based on the personnel activity region, a temperature sensor is placed in the temperature control space, and based on the temperature sensor, the multiple temperature diffusion parameters of the central air conditioner are obtained, which further comprises:

[0021] acquiring a position of the central air conditioner in the temperature control plan and recording the position as an air conditioner position; when the air conditioner position is in the personnel activity area, recording a point in the edge of the personnel activity area closest to the air conditioner position and a point farthest to the air conditioner position as a diffusion near point and a diffusion far point respectively; recording a circle with the air conditioner position as the center and a line connecting the air conditioner position and the diffusion near point as the radius as a near point diffusion area, and recording an area in the personnel activity area not coinciding with the near point diffusion area as a far point analysis area;

[0022] when the air conditioner position is outside the personnel activity area, acquiring an arbitrary tangent line of the air conditioner position and the personnel activity area, and recording an intersection of the tangent line and the personnel activity area as a tangent point; recording a circle with the air conditioner position as the center and a line connecting the air conditioner position and the tangent point as the radius as a far point diffusion circle; recording an area in the personnel activity area not coinciding with the far point diffusion circle as the far point analysis area, and recording an area in the personnel activity area except the far point analysis area as the near point diffusion area.

[0023] Further, based on the personnel activity area in the temperature control space, placing temperature sensors, and based on the temperature sensors, acquiring the multiple temperature diffusion parameters of the central air conditioner further comprises:

[0024] recording a number of objects in the near point diffusion area as z1, recording a number of objects in the far point analysis area as z2, and acquiring a near point sensing interval and a far point sensing interval using a near-far diffusion algorithm; the near-far diffusion algorithm is: wherein F1 is the near point sensing interval, F2 is the far point sensing interval, L1 is the farthest distance from the air conditioner position in the near point diffusion area, L2 is the farthest distance from the air conditioner position in the far point analysis area, c1 is the number of trajectories DG to be analyzed in the near point diffusion area, and c2 is the number of trajectories DG to be analyzed in the far point analysis area;

[0025] recording an arbitrary point farthest from the air conditioner position in the near point diffusion area as D1, recording a line connecting the point D1 and the air conditioner position as a near point sensing line, acquiring multiple points with a near point sensing interval in the near point sensing line and recording the multiple points as near point sensing points; recording an arbitrary point farthest from the air conditioner position in the far point analysis area as D2, recording a line segment of a line connecting the point D2 and the air conditioner position only in the far point analysis area as a far point sensing line, and acquiring multiple points with a far point sensing interval in the far point sensing line and recording the multiple points as far point sensing points;

[0026] placing temperature sensors at the near point sensing points and the far point sensing points in the temperature control space, and recording the temperature sensors based on the distance from the air conditioner position from near to far as temperature sensor WC1 to temperature sensor WC g .

[0027] Furthermore, placing temperature sensors within the temperature-controlled space based on the area of ​​human activity, and obtaining multiple temperature diffusion parameters of the central air conditioning system based on these temperature sensors, also includes:

[0028] Establish a Cartesian coordinate system, denoted as the temperature expansion analysis coordinate system. The coordinates along the X-axis of this coordinate system, from the origin to the right, are sequentially filled with the coordinates of temperature sensors WC1 to WC. g The unit of the Y-axis in the temperature expansion analysis coordinate system is time; for any central air conditioner that can release temperature α, when the temperature of the temperature-controlled space is temperature β, the timing starts from when the central air conditioner adjusts the temperature to temperature α, and the temperature data from temperature sensor WC1 to temperature sensor WC are obtained respectively. g The time it takes for the measured value to change from temperature β to temperature α is recorded, and points are marked in the temperature expansion analysis coordinate system based on the timing results. These points are denoted as temperature expansion points. Temperature α and temperature β are different from each other, and the difference between temperature α and temperature β is denoted as γ.

[0029] The point with the largest ordinate and the point with the smallest ordinate among all temperature diffusion points are respectively denoted as the late temperature point and the early temperature point; the difference between the ordinate of the late temperature point and the ordinate of the early temperature point is denoted as the temperature diffusion time difference; the value of the temperature diffusion time difference divided by γ is denoted as the multiple temperature diffusion parameters of temperature α and temperature β.

[0030] Obtain multi-temperature diffusion parameters corresponding to all temperatures that the central air conditioning system can release and all temperatures that can exist in the temperature-controlled space.

[0031] Furthermore, energy-saving control of the central air conditioning system during startup based on multiple temperature diffusion parameters includes:

[0032] When the central air conditioning system starts, the starting temperature is recorded as the real-time temperature; from temperature sensor WC1 to temperature sensor WC g The temperature within the temperature-controlled space is acquired in real time and recorded as the real-time space temperature; based on the real-time air conditioning temperature and the real-time space temperature, corresponding multi-temperature diffusion parameters are obtained.

[0033] Based on a calculation method using multiple temperature diffusion parameters, the real-time temperature of the air conditioner is obtained from the detection result of temperature sensor WC1 to temperature sensor WC. g The detection result is the time of the real-time temperature of the air conditioner, and is recorded as T. When the central air conditioner is started, when the detection result of the temperature sensor WC1 is the real-time temperature of the air conditioner, the start-up state of the air conditioner is adjusted to energy-saving mode after T.

[0034] Secondly, this application provides an electronic device including a processor and a memory, wherein the memory stores computer-readable instructions, and when the computer-readable instructions are executed by the processor, the steps in the method described above are performed.

[0035] In a third aspect, the present application provides a storage medium having a computer program stored thereon, which, when executed by a processor, performs the steps of the above method.

[0036] The present application has the following advantages: the present application firstly records the space regulated by the central air conditioner as a temperature control space, records the plan view of the temperature control space as a temperature control plan view, obtains the motion track of all the persons in the temperature control space based on the human body infrared sensor of the central air conditioner, and obtains the person activity area in the temperature control plan view based on the motion track, which has the advantage that the activity range of the person in the area influenced by the central air conditioner can be obtained by obtaining the person activity area based on the motion track in the temperature control space, which helps to provide data support for obtaining the control time of the central air conditioner in subsequent analysis, and makes the energy-saving control of the central air conditioner more accurate.

[0037] The present application also places the temperature sensor in the temperature control space based on the person activity area, obtains the multi-temperature diffusion parameters of the central air conditioner based on the temperature sensor, and finally performs the energy-saving control of the central air conditioner based on the multi-temperature diffusion parameters when the central air conditioner is started, which has the advantage that the related parameters for controlling the temperature at different temperatures when the central air conditioner controls the temperature of the activity range of the person can be obtained by placing the temperature sensor, so as to ensure that the central air conditioner can completely cover the activity area of the person when the energy-saving control of the central air conditioner is performed, thereby realizing that the energy-saving control of the central air conditioner can be performed after the central air conditioner completes the effective service to the person, so as to reduce the energy consumption. BRIEF DESCRIPTION OF DRAWINGS

[0038] Figure 1 The step flow chart of the method of the present application is shown in the following table:

[0039] Figure 2 The acquisition schematic diagram of the person activity area of the present application is shown in the following table:

[0040] Figure 3 The acquisition schematic diagram of the far point analysis area and the near point diffusion area of the present application is shown in the following table:

[0041] Figure 4 The structure schematic diagram of the electronic device of the present application is shown in the following table: DETAILED DESCRIPTION

[0042] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0043] Embodiment 1, please refer to Figure 1As shown, the present application provides an energy-saving control method for central air conditioning, comprising the following steps:

[0044] Step S1, the space regulated by the central air conditioner is recorded as the temperature control space; the plan view of the temperature control space is recorded as the temperature control plan view; the motion trajectories of all personnel in the temperature control space are obtained based on the human infrared sensor of the central air conditioner, and the personnel activity area is obtained in the temperature control plan view based on the motion trajectories;

[0045] Step S1 comprises: step S101, obtaining the size data of the temperature control plan view, establishing a planar rectangular coordinate system with the unit of X axis and Y axis being meters, and recording it as the planar analysis coordinate system; placing the temperature control plan view in the first quadrant of the planar analysis coordinate system based on the size data of the temperature control plan view;

[0046] Step S102, based on the human infrared sensor of the central air conditioner, obtaining and storing the motion trajectories of all personnel in the temperature control space, and dividing the recorded trajectory data into days, respectively recorded as trajectory data GS1 to trajectory data GS c , wherein c is the number of days recorded by the human infrared sensor of the central air conditioner for the motion trajectories of personnel in the temperature control space;

[0047] In the specific implementation process, when actually analyzing, the obtained temperature control space and temperature control plan view can be cut according to the actual activity area of the personnel, that is, the area where the personnel do not move is deleted, so as to reduce the data amount in the subsequent analysis, thereby improving the data analysis efficiency;

[0048] Step S103, for any one trajectory data GS v , all motion trajectories in the trajectory data GS v are drawn in the temperature control plan view, and the motion trajectories in the temperature control plan view are respectively recorded as to-be-analyzed trajectories DG1 to to-be-analyzed trajectories DG m , wherein v is a positive integer less than or equal to c and greater than or equal to 1;

[0049] In the specific implementation process, for example, in one data analysis, the obtained temperature control plan view is as shown in the area GS in Figure 2 , wherein DG1 to DG4 are to-be-analyzed trajectories DG in the temperature control plan view, and through Figure 2 it can be obtained that all to-be-analyzed trajectories DG have intersection points, so as to ensure that the obtained personnel activity area can cover all to-be-analyzed trajectories DG, the adjacent points and adjacent lines corresponding to the edge points of the to-be-analyzed trajectories DG can be obtained; through Figure 2 it can be obtained that the area BH formed by all edge adjacent lines corresponding to DG1 to DG4 and all to-be-analyzed trajectories DG is a closed area, so the closed area can be recorded as the personnel activity area, thereby providing data support for subsequent analysis;

[0050] Step S104, when all the trajectories DG to be analyzed do not have intersection points, for any one trajectory DG to be analyzed b , two endpoints of the trajectory DG to be analyzed are recorded as edge point A and edge point B respectively, and the adjacent points of the edge point A and the edge point B are obtained, wherein the adjacent point is the endpoint closest to the edge point A or the edge point B in the trajectory DG to be analyzed DG other than the trajectory DG to be analyzed DG, and b is a positive integer less than or equal to m and greater than or equal to 1; b b

[0051] Step S105, obtaining the edge points of all the trajectories DG to be analyzed and the adjacent points of all the edge points, connecting the edge points and the adjacent points corresponding to the edge points, and recording the line segment connecting the edge points and the adjacent points corresponding to the edge points as an edge-adjacent line;

[0052] Step S106, when the area formed by all the edge-adjacent lines and all the trajectories DG to be analyzed is a closed area, recording the closed area as a personnel activity area; when the area formed by all the edge-adjacent lines and all the trajectories DG to be analyzed is a non-closed area, obtaining the smallest circle that can wrap all the edge-adjacent lines and all the trajectories DG to be analyzed in the planar analysis coordinate system, recording it as a trajectory wrapping circle; recording the area coinciding with the trajectory wrapping circle and the temperature control plan as a personnel activity area;

[0053] Step S107, when all the trajectories DG to be analyzed have intersection points, recording the intersection points of the trajectories DG to be analyzed as trajectory intersection points; obtaining the smallest circle that can wrap all the trajectory intersection points in the planar analysis coordinate system, recording it as an intersection point wrapping circle; recording the area coinciding with the intersection point wrapping circle and the temperature control plan as an intersection point area; for any one trajectory DG to be analyzed, recording the point in the trajectory DG to be analyzed farthest from the center of the intersection point area as a trajectory far point, drawing tangent lines from the trajectory far point to the intersection point area, and recording the area between the two tangent lines and the intersection point area as a trajectory associated area;

[0054] In the specific implementation process, the intersection point wrapping circle is obtained based on the trajectory intersection points, and the area associated with all the trajectories DG to be analyzed can be obtained, so that after obtaining the trajectory associated area corresponding to each trajectory DG to be analyzed based on the intersection point wrapping circle, the personnel activity area obtained further is more accurate and effective;

[0055] Step S108, obtaining the trajectory associated area of all the trajectories DG to be analyzed; recording the area obtained by merging the trajectory area of all the trajectories DG to be analyzed and the intersection point area as a personnel activity area.

[0056] Step S2, placing a temperature sensor in the temperature control space based on the personnel activity area, and obtaining multiple temperature diffusion parameters of the central air conditioner based on the temperature sensor; ​​

[0057] Step S2 includes: step S201, acquiring the position of the central air conditioner in the temperature control plan and recording it as the air conditioner position; when the air conditioner position is in the personnel activity area, the point in the edge of the personnel activity area closest to the air conditioner position and the point farthest from the air conditioner position are recorded as the diffusion near point and the diffusion far point respectively; a circle with the air conditioner position as the center and the line connecting the air conditioner position and the diffusion near point as the radius is recorded as the near point diffusion area, and the area in the personnel activity area that does not coincide with the near point diffusion area is recorded as the far point analysis area;

[0058] Step S202, when the air conditioner position is outside the personnel activity area, acquiring any tangent line of the air conditioner position and the personnel activity area, and recording the intersection point of the tangent line and the personnel activity area as the tangent point; a circle with the air conditioner position as the center and the line connecting the air conditioner position and the tangent point as the radius is recorded as the far point diffusion circle; the area in the personnel activity area that does not coincide with the far point diffusion circle is recorded as the far point analysis area, and the area in the personnel activity area other than the far point analysis area is recorded as the near point diffusion area;

[0059] In the specific implementation process, for example, in one data analysis, the obtained personnel activity area BH and air conditioner position KW are as shown in FIG. 2, then through analysis, it can be obtained that the air conditioner position is outside the personnel activity area, and the point KY is the tangent point, then through analysis, it can be obtained that the area where the point YF is located in the personnel activity area is the far point analysis area, and the area where the point JK is located is the near point diffusion area; Figure 3

[0060] Step S203, recording the number of objects in the near point diffusion area as z1, recording the number of objects in the far point analysis area as z2, and using the near-far diffusion algorithm to obtain the near point sensing interval and the far point sensing interval; the near-far diffusion algorithm is: wherein F1 is the near point sensing interval, F2 is the far point sensing interval, L1 is the farthest distance from the air conditioner position in the near point diffusion area, L2 is the farthest distance from the air conditioner position in the far point analysis area, c1 is the number of trajectories DG to be analyzed in the near point diffusion area, and c2 is the number of trajectories DG to be analyzed in the far point analysis area;

[0061] In the specific implementation process, for example, in one data analysis, the number of objects in the near point diffusion area is 5, the number of objects in the far point analysis area is 1, the farthest distance from the air conditioner position in the near point diffusion area is 2 meters, the farthest distance from the air conditioner position in the far point analysis area is 10 meters, the number of trajectories DG to be analyzed in the near point diffusion area is 3, and the number of trajectories DG to be analyzed in the far point analysis area is 2, then through calculation, it can be obtained that the near point sensing interval is 0.13 and the far point sensing interval is 1;

[0062] ​Step S204, record any one point farthest from the air conditioner position in the near point diffusion area as D1, record the line between the point D1 and the air conditioner position as the near point sensing line, obtain multiple points in the near point sensing line with a near point sensing interval, and record them as near point sensing points; record any one point farthest from the air conditioner position in the far point analysis area as D2, record the line segment between the point D2 and the air conditioner position only in the far point analysis area as the far point sensing line, obtain multiple points in the far point sensing line with a far point sensing interval, and record them as far point sensing points;

[0063] Step S205, place temperature sensors at the near point sensing points and the far point sensing points of the temperature control space, and record the temperature sensors from near to far based on the distance from the temperature sensors to the air conditioner position as temperature sensor WC1 to temperature sensor WC g ;

[0064] In the specific implementation process, by obtaining the near point sensing interval and the far point sensing interval, and further placing the temperature sensors, the interval distance of the temperature sensors can be obtained based on the number of objects in the near point diffusion area and the far point analysis area and the number of to-be-analyzed trajectories DG, so as to ensure that the detection data of the temperature sensors can be more accurate and fine, and meet the actual situation of the personnel activity area, and provide more effective data support for subsequent analysis;

[0065] Step S206, establish a plane rectangular coordinate system, recorded as a temperature expansion analysis coordinate system, wherein the X-axis of the temperature expansion analysis coordinate system is filled with the temperature sensor WC1 to the temperature sensor WC g from left to right in sequence, and the unit of the Y-axis of the temperature expansion analysis coordinate system is time; for any temperature α that can be released by the central air conditioner, when the temperature of the temperature control space is temperature β, timing starts from adjusting the temperature of the central air conditioner to temperature α, the measurement values of the temperature sensor WC1 to the temperature sensor WC g from temperature β to temperature α are obtained, and based on the timing result, dots are marked in the temperature expansion analysis coordinate system, and the dots are recorded as temperature expansion points, wherein temperature α and temperature β are different from each other, and the difference between temperature α and temperature β is recorded as γ;

[0066] Step S207, record the point with the largest vertical coordinate and the point with the smallest vertical coordinate in all temperature expansion points as the late temperature point and the early temperature point respectively; record the difference between the vertical coordinate of the late temperature point and the vertical coordinate of the early temperature point as the temperature expansion time difference, and record the value of the temperature expansion time difference divided by γ as the multi-temperature expansion parameter of temperature α and temperature β;

[0067] In the implementation process, such as in a data processing, the obtained vertical coordinates of the late temperature point and the early temperature point are 10 min and 2 min respectively, and the difference between the temperature α and the temperature β is 16℃, so that the multi-temperature diffusion parameter corresponding to the temperature α and the temperature β is 0.5 through calculation; by obtaining the multi-temperature diffusion parameter corresponding to all temperatures that can be released by the central air conditioner and all temperatures that can exist in the temperature control space, data support can be provided for all situations of starting the central air conditioner in subsequent analysis, so that the central air conditioner can be effectively controlled in energy saving under any situation of starting the central air conditioner;

[0068] Step S208, obtaining the multi-temperature diffusion parameter corresponding to all temperatures that can be released by the central air conditioner and all temperatures that can exist in the temperature control space.

[0069] Step S3, based on the multi-temperature diffusion parameter, performing energy saving control on the central air conditioner when the central air conditioner starts; step S3 includes: step S301, when the central air conditioner starts, recording the temperature of starting the central air conditioner as the air conditioner real-time temperature; the detection results of the temperature sensors WC1 to WC g Real-time acquisition of the temperature in the temperature control space and recording as the space real-time temperature; based on the air conditioner real-time temperature and the space real-time temperature, obtaining the corresponding multi-temperature diffusion parameter;

[0070] Step S302, based on the calculation method of the multi-temperature diffusion parameter, obtaining the time from the detection result of the temperature sensor WC1 as the air conditioner real-time temperature to the detection result of the temperature sensor WC g as the air conditioner real-time temperature, and recording as T; when the central air conditioner starts, the starting state of the air conditioner is adjusted to the energy saving mode after T when the detection result of the temperature sensor WC1 is the air conditioner real-time temperature.

[0071] Embodiment 2, please refer to Figure 4 , Figure 4 An example of a structural diagram of an electronic device is shown, which can include: a processor, a communication interface, a memory and a communication bus, wherein the processor, the communication interface and the memory complete mutual communication through the communication bus. The memory stores computer readable instructions, and the processor can call the instructions in the memory, when the computer readable instructions are executed by the processor, the steps in a kind of energy saving control method for central air conditioner are run, to realize the following functions: first, the space that is subjected to temperature adjustment by central air conditioner is recorded as temperature control space;The plan view of temperature control space is recorded as temperature control plan;Based on the motion trajectory of all personnel in temperature control space obtained by human infrared sensor of central air conditioner, and based on motion trajectory, personnel activity area is obtained in temperature control plan;Then, based on personnel activity area, temperature sensor is placed in temperature control space, and based on temperature sensor, multi-temperature diffusion parameter of central air conditioner is obtained;Finally, based on multi-temperature diffusion parameter, energy saving control is carried out on central air conditioner when central air conditioner starts.

[0072] Moreover, the logic instructions in the above-mentioned memory can be realized in the form of a software function unit and sold or used as an independent product, and can be stored in a computer readable storage medium. Based on such understanding, the technical solutions of the present application essentially or the parts that contribute to the prior art or parts of the technical solutions can be embodied in the form of a software product. The computer software product is stored in a storage medium and includes several instructions for causing a computer device (which can be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of the present application. The aforementioned storage medium includes: a U disk, a mobile hard disk, a read-only memory (ROM, Read-Only Memory), a random access memory (RAM, Random Access Memory), a magnetic disk or an optical disk, and various media that can store program codes.

[0073] Embodiment 3, the present application also provides a computer program product, the computer program product includes a computer program stored on a computer readable storage medium, the computer program includes program instructions, when the program instructions are executed by a computer, the computer can execute the energy-saving control method for a central air conditioner provided by the above-mentioned method, the method includes: first, record the space regulated by the central air conditioner as a temperature control space; record the plan view of the temperature control space as a temperature control plan; obtain the motion trajectory of all personnel in the temperature control space based on the human infrared sensor of the central air conditioner, and obtain the personnel activity area in the temperature control plan based on the motion trajectory; then, place the temperature sensor in the temperature control space based on the personnel activity area, and obtain the multi-temperature diffusion parameters of the central air conditioner based on the temperature sensor; finally, perform energy-saving control on the central air conditioner when the central air conditioner starts based on the multi-temperature diffusion parameters.

[0074] Embodiment 4, the present application also provides a computer readable storage medium, the present application provides a storage medium, which stores a computer program, when the computer program is executed by a processor, the steps in the above-mentioned energy-saving control method for a central air conditioner are run to realize the following functions: first, record the space regulated by the central air conditioner as a temperature control space; record the plan view of the temperature control space as a temperature control plan; obtain the motion trajectory of all personnel in the temperature control space based on the human infrared sensor of the central air conditioner, and obtain the personnel activity area in the temperature control plan based on the motion trajectory; then, place the temperature sensor in the temperature control space based on the personnel activity area, and obtain the multi-temperature diffusion parameters of the central air conditioner based on the temperature sensor; finally, perform energy-saving control on the central air conditioner when the central air conditioner starts based on the multi-temperature diffusion parameters.

[0075] Through the description of the above embodiments, the embodiments of the present application can be provided as a method, a system or a computer program product. Based on such understanding, the above technical solutions can be embodied in the form of a software product, which can be stored in a computer readable storage medium, such as a ROM / RAM, a magnetic disk, an optical disk, etc., and includes a plurality of instructions to make a computer device (which can be a personal computer, a server, or a network device, etc.) execute the methods described in various embodiments or some parts of the embodiments.

[0076] In the embodiments provided by the present application, it should be understood that the disclosed system or method can be implemented in other manners. The embodiments described above are merely schematic, and should not be construed as limiting. For example, the division of the modules or the units is merely logical function division, and there can be other division manners in actual implementation. For example, a plurality of modules or units can be combined or integrated into another system, or some features can be ignored or not executed. In addition, the displayed or discussed mutual couplings or direct couplings or communication connections between different modules can be indirect couplings or communication connections through some interfaces, and there can be electric, mechanical or other forms.

[0077] Finally, it should be noted that the above-mentioned embodiments are merely used to illustrate the technical solutions of the present application, rather than limit them; even if the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacements to some technical features; and these modifications or replacements do not cause the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. An energy saving control method for a central air conditioner, characterized by, The method comprises the following steps: The space regulated by the central air conditioner is recorded as a temperature-controlled space; a plan view of the temperature-controlled space is recorded as a temperature-controlled plan view; the motion trajectories of all persons in the temperature-controlled space are obtained based on the human infrared sensor of the central air conditioner, and the person activity area is obtained in the temperature-controlled plan view based on the motion trajectories; Temperature sensors are placed in the temperature-controlled space based on the person activity area, and the multi-temperature diffusion parameters of the central air conditioner are obtained based on the temperature sensors; The energy-saving control of the central air conditioner is performed when the central air conditioner is started based on the multi-temperature diffusion parameters; The temperature sensors are placed in the temperature-controlled space based on the person activity area, and the multi-temperature diffusion parameters of the central air conditioner are obtained based on the temperature sensors, which comprises: The position of the central air conditioner in the temperature-controlled plan view is obtained and recorded as an air conditioner position; when the air conditioner position is in the person activity area, the point in the edge of the person activity area closest to the air conditioner position and the point farthest from the air conditioner position are recorded as a diffusion near point and a diffusion far point respectively; a circle with the air conditioner position as the center and the line connecting the air conditioner position and the diffusion near point as the radius is recorded as a near point diffusion area, and the area in the person activity area that does not coincide with the near point diffusion area is recorded as a far point analysis area; When the air conditioner position is outside the person activity area, an arbitrary tangent line of the air conditioner position and the person activity area is obtained, and the intersection point of the tangent line and the person activity area is recorded as a tangent point; a circle with the air conditioner position as the center and the line connecting the air conditioner position and the tangent point as the radius is recorded as a far point diffusion circle; the area in the person activity area that does not coincide with the far point diffusion circle is recorded as a far point analysis area, and the area in the person activity area except the far point analysis area is recorded as a near point diffusion area; The temperature sensors are placed in the temperature-controlled space based on the person activity area, and the multi-temperature diffusion parameters of the central air conditioner are obtained based on the temperature sensors, which further comprises: The number of objects in the near point diffusion area is denoted as z1, the number of objects in the far point analysis area is denoted as z2, the near point sensing interval and the far point sensing interval are obtained using the near-far diffusion algorithm; the near-far diffusion algorithm is as follows: Wherein, F1 is the near point sensing interval, F2 is the far point sensing interval, L1 is the farthest distance from the air conditioner position in the near point diffusion area, L2 is the farthest distance from the air conditioner position in the far point analysis area, c1 is the number of trajectories DG to be analyzed in the near point diffusion area, and c2 is the number of trajectories DG to be analyzed in the far point analysis area. The point in the near point diffusion area farthest from the air conditioner position is recorded as D1, the line connecting point D1 and the air conditioner position is recorded as a near point sensing line, a plurality of points in the near point sensing line with a near point sensing interval are obtained and recorded as near point sensing points, the point in the far point analysis area farthest from the air conditioner position is recorded as D2, the line segment of the line connecting point D2 and the air conditioner position that is only in the far point analysis area is recorded as a far point sensing line, and a plurality of points in the far point sensing line with a far point sensing interval are obtained and recorded as far point sensing points; Temperature sensors are placed at the near-point sensing point and the far-point sensing point of the temperature-controlled space, and are sequentially recorded as temperature sensor WC1 to temperature sensor WCn based on the distance from the air conditioner position from near to far g ; The temperature sensors are placed in the temperature-controlled space based on the person activity area, and the multi-temperature diffusion parameters of the central air conditioner are obtained based on the temperature sensors, which further comprises: A plane rectangular coordinate system is established, denoted as a temperature spread analysis coordinate system, wherein X-axis of the temperature spread analysis coordinate system is filled with temperature sensors WC1 to WCn from left to right in sequence, Y-axis of the temperature spread analysis coordinate system is a time unit; for any temperature α released by the central air conditioner, when the temperature of the temperature-controlled space is temperature β, timing starts from adjusting the temperature of the central air conditioner to temperature α, the time for the measured values of temperature sensors WC1 to WCn to change from temperature β to temperature α is obtained, and based on the timing result, a dot is marked in the temperature spread analysis coordinate system, denoted as a temperature spread point, wherein temperature α and temperature β are different from each other, and the difference between temperature α and temperature β is denoted as γ. g g ​​ The point with the maximum vertical coordinate and the point with the minimum vertical coordinate in all temperature expansion points are recorded as a late temperature point and an early temperature point respectively; the difference between the vertical coordinate of the late temperature point and the vertical coordinate of the early temperature point is recorded as a temperature expansion time difference, and the temperature expansion time difference divided by γ is recorded as the multi-temperature diffusion parameters of temperature α and temperature β; All temperatures that the central air conditioner can release and the multi-temperature diffusion parameters corresponding to all temperatures that can exist in the temperature-controlled space are obtained; The energy-saving control of the central air conditioner is performed when the central air conditioner is started based on the multi-temperature diffusion parameters, which comprises: When the central air conditioner is started, the temperature at which the central air conditioner is started is recorded as the air conditioner real-time temperature; the temperature sensor WC1 to the temperature sensor WC g The temperature in the temperature-controlled space is acquired in real time and recorded as the space real-time temperature; the corresponding multi-temperature diffusion parameters are acquired based on the air conditioner real-time temperature and the space real-time temperature; Based on the calculation method of the multiple temperature diffusion parameters, the detection result of the temperature sensor WC1 is obtained as the real-time temperature of the air conditioner to the detection result of the temperature sensor WC g as the real-time temperature of the air conditioner, and is recorded as T; when the central air conditioner is started, the detection result of the temperature sensor WC1 is adjusted to the energy-saving mode after T.

2. The energy-saving control method for a central air conditioner according to claim 1, wherein The motion trajectories of all persons in the temperature-controlled space are acquired based on the human infrared sensor of the central air conditioner, and the personnel activity area in the temperature-controlled plan is acquired based on the motion trajectories, including: The size data of the temperature-controlled plan is acquired, a planar rectangular coordinate system with the unit of X axis and Y axis being meter is established, and is recorded as a planar analysis coordinate system; the temperature-controlled plan is placed in the first quadrant of the planar analysis coordinate system based on the size data of the temperature-controlled plan; The human infrared sensor based on the central air conditioner acquires and stores the motion trajectories of all persons in the temperature-controlled space, and divides the recorded trajectory data by day, and records the trajectory data GS1 to GS c wherein c is the number of days in which the human infrared sensor of the central air conditioner records the motion trajectories of the persons in the temperature-controlled space. For any one trajectory data GS v , all motion trajectories in the trajectory data GS v are plotted in the temperature control plan, and the motion trajectories in the temperature control plan are respectively recorded as to-be-analyzed trajectory DG1 to to-be-analyzed trajectory DG m , wherein v is a positive integer less than or equal to c and greater than or equal to 1.

3. The energy-saving control method for a central air conditioner according to claim 2, wherein The motion trajectories of all persons in the temperature-controlled space are acquired based on the human infrared sensor of the central air conditioner, and the personnel activity area in the temperature-controlled plan is acquired based on the motion trajectories, further including: When all the trajectories DG to be analyzed have no intersection points, for any one of the trajectories DG to be analyzed... b The trajectory to be analyzed, DG b The two endpoints are denoted as edge point A and edge point B, respectively. The neighboring points of edge point A and edge point B are obtained, where the neighboring points are those other than the trajectory DG to be analyzed. b The endpoint of the trajectory DG to be analyzed other than edge point A or edge point B, where b is a positive integer less than or equal to m and greater than or equal to 1; The edge points of all to-be-analyzed trajectories DG and the adjacent points of all the edge points are acquired, the edge points and the adjacent points corresponding to the edge points are connected, and the line segment connecting the edge points and the adjacent points corresponding to the edge points is recorded as an edge-adjacent line; When the area formed by all the edge-adjacent lines and all the to-be-analyzed trajectories DG is a closed area, the closed area is recorded as the personnel activity area; when the area formed by all the edge-adjacent lines and all the to-be-analyzed trajectories DG is a non-closed area, the smallest circle capable of wrapping all the edge-adjacent lines and all the to-be-analyzed trajectories DG in the planar analysis coordinate system is acquired, and is recorded as a trajectory wrapping circle; the area of the temperature-controlled plan coinciding with the trajectory wrapping circle is recorded as the personnel activity area.

4. The energy-saving control method for a central air conditioner according to claim 3, wherein The motion trajectories of all persons in the temperature-controlled space are acquired based on the human infrared sensor of the central air conditioner, and the personnel activity area in the temperature-controlled plan is acquired based on the motion trajectories, further including: When all the to-be-analyzed trajectories DG have intersection points, the intersection points of the to-be-analyzed trajectories DG are recorded as trajectory intersection points; the smallest circle capable of wrapping all the trajectory intersection points in the planar analysis coordinate system is acquired, and is recorded as an intersection point wrapping circle; the area of the temperature-controlled plan coinciding with the intersection point wrapping circle is recorded as an intersection point area; for any one to-be-analyzed trajectory DG, the point in the to-be-analyzed trajectory DG farthest from the center of the intersection point area is recorded as a trajectory far point, the tangent lines from the trajectory far point to the intersection point area are drawn, and the area between the two tangent lines and the intersection point area is recorded as a trajectory associated area; The trajectory associated areas of all the to-be-analyzed trajectories DG are acquired; the area obtained by merging the trajectory areas of all the to-be-analyzed trajectories DG and the intersection point area is recorded as the personnel activity area.

5. An electronic device, comprising: The computer program is executed by the processor to run the steps in the method of any one of claims 1-4.

6. A storage medium having stored thereon a computer program, characterized in that The computer program is executed by the processor to run the steps in the method of any one of claims 1-4.

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