CN114936846A - Park management system based on digital twin - Google Patents
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Abstract
The embodiment of the invention discloses a park management system based on a digital twin, and relates to the technical field of digital twins. The system, comprising: the park three-dimensional module is used for storing and displaying a three-dimensional model of a target park pre-established by a user; the three-dimensional model of the target park at least comprises equipment installed in the target park; the information acquisition module is used for acquiring the actual position information of each person in the target park in real time, converting the actual position information of each person into the coordinates of the person in the preset three-dimensional rectangular coordinate system and recording the coordinates; and the control module is used for controlling the working state of the equipment according to the coordinates of each person in the target park in the preset three-dimensional rectangular coordinate system and the coordinates of each equipment in the three-dimensional model of the target park. The intelligent and automatic intelligent control system can intelligently and automatically control the working state of equipment, and effectively reduce the carbon emission of a park.
Description
Technical Field
The invention belongs to the technical field of digital twins, and particularly relates to a park management system based on digital twins.
Background
In recent years, the pace of building smart cities in China is also quickened, smart park building is combined with park industry development, innovative and ecological development is achieved, development of industries such as high-tech, green and environment-friendly is emphasized, and management innovation is combined with park intelligence.
Ecological development and development green environment-friendly industry are the central importance of wisdom garden construction, and the facility equipment operating condition of wisdom garden is intelligent control, reduces energy resource consumption, reaches the purpose that reduces carbon emission.
At present, a park management system for managing facility equipment mainly collects partial environmental data of partial areas through sensors, and when the environmental data are judged to be not in accordance with requirements manually according to experience, workers control equipment to be turned on and turned off. However, because the collected data is not comprehensive enough, the management is also determined by the experience of the staff, so that the accurate measurement of carbon emission and the accurate regulation of the working state of the related equipment cannot be realized.
Disclosure of Invention
In view of this, the embodiment of the present invention provides a park management system based on a digital twin, and is used to solve the problem that the existing park management system cannot accurately measure carbon emission and accurately regulate and control the working state of related equipment. The intelligent and automatic intelligent control system can intelligently and automatically control the working state of the equipment according to the position information of each person and each equipment in the park, and can effectively reduce the carbon emission of the park.
The park management system based on the digital twin provided by the embodiment of the invention comprises:
the park three-dimensional module is used for storing and displaying a three-dimensional model of a target park pre-established by a user; the three-dimensional model of the target park at least comprises equipment installed in the target park;
the information acquisition module is used for acquiring the actual position information of each person in the target park in real time, converting the actual position information of each person into the coordinates of the person in the preset three-dimensional rectangular coordinate system and recording the coordinates;
and the control module is used for controlling the working state of the equipment according to the coordinates of each person in the target park in the preset three-dimensional rectangular coordinate system and the coordinates of each equipment in the three-dimensional model of the target park.
In an optional embodiment, the equipment installed in the target park is classified into a highest grade, a medium grade and a lowest grade;
the control module is used for controlling the highest-grade equipment to be always in a working state; the control module is also used for receiving an opening/closing instruction of a user for the medium-grade equipment and opening/closing the medium-grade equipment corresponding to the opening/closing instruction; and the control module is also used for controlling the working state of the lowest-level equipment according to the coordinates of each person in the target park in the preset three-dimensional rectangular coordinate system and the coordinates of each equipment in the three-dimensional model of the target park.
In an optional embodiment, the control module includes:
the peak period state determining unit is used for determining the working state of each lowest-level device in the peak period every day according to the coordinate of each person in the target park in the preset three-dimensional rectangular coordinate system and the coordinate of each lowest-level device in the three-dimensional model of the target park in the history peak period every day recorded by the information acquisition module;
the off-peak period state determining unit is used for determining the working state of each lowest-level device at the off-peak time according to the coordinates of each person in the target park in the preset three-dimensional rectangular coordinate system and the coordinates of each lowest-level device in the three-dimensional model of the target park at the off-peak time;
and the control unit is used for controlling the equipment with the highest grade to be always in the working state, opening/closing the corresponding equipment with the medium grade according to an opening/closing instruction of a user to the equipment with the medium grade, and controlling each equipment with the lowest grade to work in the working state of the equipment determined by the peak period state determining unit or the non-peak period state determining unit.
In an alternative embodiment, the operating state of the lowest level device includes: a closed state and an open state;
the peak period state determining unit is specifically configured to calculate a peak period start-stop control value of each lowest-level device in a peak period every day according to a first formula, and determine that the operating state of the lowest-level device in the peak period every day is an on state when the peak period start-stop control value of the lowest-level device is equal to 1, or determine that the operating state of the lowest-level device in the peak period every day is an off state when the peak period start-stop control value of the lowest-level device is equal to 0;
the off-peak period state determining unit is specifically configured to calculate an off-peak period start control value of each lowest-level device at the current off-peak time according to a second formula, and determine that the working state of the device at the current off-peak time is a start state when the off-peak period start control value of the lowest-level device is equal to 1;
wherein the first formula is:
wherein E is z (a) Denotes t at the morning peak of the day z Time t z The peak-period start-stop control value of the a lowest-level equipment within one hour at +60 s; e e (a) Representing t at the peak hours of noon e Time t e The peak-period start-stop control value of the a lowest-level equipment within one hour at +60 s; e f (a) Representing t at late peak hours f Time t f The peak-period start-stop control value of the a lowest-level equipment within one hour at +60 s; t represents t and is also an integer variable, and the variation of each time is 1 minute; s min (a) Representing the minimum distance value of the distances between the a-th lowest-level device in the target park and all the lowest-level devices in the target park; s (t _ i) represents the ith time in the target park at the time t of the historical recordThe distance between the person and the a lowest ranked device on the target campus; r2]A judgment function is expressed, if the arithmetic expression in the bracket is established, the function value is 1, and if the arithmetic expression in the bracket is not established, the function value is 0; n (t) represents the total number of people in the target park at time t; m represents the total number of lowest ranked devices on the target campus;
the second formula is:
wherein Q (t, a) represents the off-peak period on control value for the a-th lowest ranked device at time t of the current off-peak period; [ x (t _ i), y (t _ i), z (t _ i)]Representing the coordinate of the ith person in the target park in the preset three-dimensional rectangular coordinate system at the time t of the current off-peak time; 1,2, …, n (t); { x [ (t-1) _ i],y[(t-1)_i],z[(t-1)_i]Representing the coordinate of the ith person in the target park in the preset three-dimensional rectangular coordinate system at the t-1 moment of the off-peak time, and if the ith person is not in the target park at the t-1 moment, taking the coordinate of the ith person as (0,0, 0)); a { [ (t-1) → t { (T-L {)]I represents the motion vector of the ith person in the target campus from time t-1 to time t of the off-peak period; [ X (a), Y (a), Z (a)]Representing coordinates of the a lowest-ranked device in the target campus in a three-dimensional model of the target campus; b [ t _ i, a ]]A directional distance vector representing the ith person on the target campus and the a lowest ranked device on the target campus at time t of the off-peak hours; 1.5m represents 1.5 m; the method is characterized in that an angle { } is used for solving an included angle between two vectors at the left end and the right end of a comma in a bracket; | | represents the modular length of the solved vector; k represents the scaling ratio between the actual real scene and the three-dimensional model of the target park;
the expression that the value of i is substituted into the parenthesis from 1 to N (t) represents the integral arithmetic expression if one or more values of i satisfy the equation in the parenthesis
This is true.
In an optional embodiment, the operating state of the lowest level device further includes: a ready state in which the device is powered up but does not operate;
the control module further comprises:
a standby state determination unit, configured to, when the off-peak state determination unit calculates that the off-peak start control value of the lowest-level device at the current off-peak time is equal to 0, calculate a control value of the device entering the standby state according to a third formula, and determine that the operating state of the device at the current off-peak time is the standby state when the control value of the device entering the standby state is equal to 1;
the control unit is also used for controlling each lowest-level device to work in the working state determined by the preparation state determining unit;
wherein the third formula is:
in the third formula, P (t, a) represents a control value at which the a-th lowest-ranked equipment enters the standby state at time t of the off-peak period.
In an optional embodiment, the three-dimensional model of the park is further configured to display different operating states of the equipment in different colors in the three-dimensional model of the target park.
In an alternative embodiment, the three-dimensional model of the target campus further includes buildings on the target campus.
In an alternative embodiment, the apparatus comprises: one or more of lighting equipment, air conditioners and elevators.
The park management system based on the digital twin provided by the invention firstly establishes a three-dimensional model of the park according to the digital twin technology, then collects the position information of each person in the three-dimensional model, and finally controls the working state of the equipment according to the position information of each person and equipment in the park. The intelligent control system can intelligently and automatically control the working state of equipment according to the position information of park personnel in real time, and saves energy and reduces emission.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a park management system based on a digital twin according to an embodiment of the present invention.
Detailed Description
Embodiments of the present invention will be described in detail below with reference to the accompanying drawings.
It should be understood that the described embodiments are only some embodiments of the invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Fig. 1 is a schematic structural diagram of a park management system based on a digital twin according to an embodiment of the present invention. Referring to fig. 1, the system includes:
the park three-dimensional module 1 is used for storing and displaying a three-dimensional model of a target park, which is pre-established by a user; the three-dimensional model of the target park at least comprises equipment installed in the target park. Preferably, the three-dimensional model of the target campus further comprises buildings in the target campus.
The information acquisition module 2 is used for acquiring the actual position information of each person in the target park in real time, converting the actual position information of each person into the coordinates of the person in the preset three-dimensional rectangular coordinate system and recording the coordinates;
and the control module 3 is used for controlling the working state of the equipment according to the coordinates of each person in the target park in the preset three-dimensional rectangular coordinate system and the coordinates of each equipment in the three-dimensional model of the target park. Preferably, the apparatus comprises: one or more of lighting equipment, air conditioners and elevators.
The beneficial effects of the above technical scheme are: according to the park management system based on the digital twin, firstly, the digital twin technology is used for mapping and modeling buildings, equipment, people and the like of a park into a 3D model, then the position information of each person in the three-dimensional model is collected, and finally the working state of the equipment is controlled according to the position information of each person and equipment in the park. The intelligent control system can intelligently and automatically control the working state of equipment according to the position information of the personnel in the park in real time, and can effectively reduce the carbon emission of the park.
As an alternative embodiment, the equipment installed in the target park is classified into a highest level, a medium level and a lowest level;
the control module 3 is used for controlling the highest-grade equipment to be in a working state all the time; the control module 3 is further configured to receive an on/off instruction of a user for a medium-level device, and to turn on/off the medium-level device corresponding to the on/off instruction; the control module 3 is further configured to control the working state of the lowest-level device according to the coordinates of each person in the target campus in the preset three-dimensional rectangular coordinate system and the coordinates of each device in the three-dimensional model of the target campus.
The beneficial effects of the above technical scheme are: the equipment in the garden has a plurality of types, such as production equipment, lighting equipment, air conditioning equipment, welding equipment and the like, and some equipment cannot be closed in the operation process of the equipment, such as the production equipment; some devices require personnel to control the closing, such as welding equipment; some equipment can be according to surrounding environment condition and personnel's condition, close and start-up automatically, like air conditioning equipment, lighting apparatus etc. these equipment can automatic start when someone is close to, and the experience of improvement personnel that is effective on the one hand feels, has also reduced energy consumption simultaneously. Therefore, the park equipment is classified into the highest grade, the middle grade and the lowest grade, so that the working state of the equipment is controlled conveniently by using the corresponding control strategy, the working states of different types of equipment are accurately controlled, the management level is effectively improved, and energy resources are effectively saved.
As an alternative embodiment, the control module 3 includes:
the peak period state determining unit is used for determining the working state of each lowest-level device in the peak period every day according to the coordinate of each person in the target park in the preset three-dimensional rectangular coordinate system and the coordinate of each lowest-level device in the three-dimensional model of the target park in the history peak period every day recorded by the information acquisition module 2;
the off-peak period state determining unit is used for determining the working state of each lowest-level device at the off-peak time according to the coordinates of each person in the target park in the preset three-dimensional rectangular coordinate system and the coordinates of each lowest-level device in the three-dimensional model of the target park at the off-peak time;
and the control unit is used for controlling the equipment with the highest grade to be always in the working state, opening/closing the corresponding equipment with the medium grade according to the opening/closing instruction of the user to the equipment with the medium grade, and controlling each equipment with the lowest grade to work in the working state of the equipment determined by the peak period state determining unit or the off-peak period state determining unit.
The beneficial effects of the above technical scheme are: dividing the equipment running time into a peak time and an off-peak time, and then determining the working state of the equipment according to the position information of personnel in the park in the historical peak time aiming at low-grade equipment running in the peak time; aiming at low-grade equipment running at off-peak, the working state of the equipment is determined according to the real-time personnel position information in the park, so that the working state of the equipment is controlled in the peak time period on one hand, and the working state of the equipment is controlled in the off-peak time period on the other hand, further, the working state of the equipment is controlled in the whole time period, and the energy resources are effectively saved.
As an alternative embodiment, the operation state of the lowest level device includes: a closed state and an open state;
the peak period state determining unit is specifically configured to calculate a peak period start-stop control value of each lowest-level device at a peak period every day according to a first formula, and determine that the operating state of the device at the peak period every day is an on state when the peak period start-stop control value of the lowest-level device is equal to 1, or determine that the operating state of the device at the peak period every day is an off state when the peak period start-stop control value of the lowest-level device is equal to 0;
the off-peak period state determining unit is specifically configured to calculate an off-peak period start control value of each lowest-level device at the current off-peak time according to a second formula, and determine that the working state of the device at the current off-peak time is a start state when the off-peak period start control value of the lowest-level device is equal to 1;
wherein the first formula is:
wherein E is z (a) Denotes t at the morning peak of the day z Time t z The start-stop control value of the a lowest level equipment in the peak period within one hour at the +60s moment; e e (a) T representing peak hours at noon e Time t e The peak-period start-stop control value of the a lowest-level equipment within one hour at +60 s; e f (a) Denotes t at late peak hours f Time t f The peak-period start-stop control value of the a lowest-level equipment within one hour at +60 s; t represents t and is also an integer variable, and the variation of each time is 1 minute; s min (a) Representing the minimum distance value in the distances between the a-th lowest-level equipment in the target park and all the lowest-level equipment in the target park; s (t _ i) represents the distance between the ith person in the target park and the a lowest-level equipment in the target park at the time t of the historical record; r2]Represents a judgment function, and if the expression in the parentheses is satisfied, the function value is 1, and if the expression in the parentheses is not satisfied, the function value is 1The function value is 0; n (t) represents the total number of people in the target park at time t; m represents the total number of lowest ranked devices in the target campus;
the second formula is:
wherein Q (t, a) represents the off-peak period on control value for the a-th lowest tier device at time t of the current off-peak period; [ x (t _ i), y (t _ i), z (t _ i)]Representing the coordinate of the ith person in the target park in the preset three-dimensional rectangular coordinate system at the time t of the current off-peak time; 1,2, …, n (t); { x [ (t-1) _ i],y[(t-1)_i],z[(t-1)_i]Representing the coordinate of the ith person in the target park in the preset three-dimensional rectangular coordinate system at the t-1 moment of the off-peak time, and if the ith person is not in the target park at the t-1 moment, taking the coordinate of the ith person as (0,0, 0)); a { [ (t-1) → t]I represents the motion vector of the ith person in the target campus from time t-1 to time t of the off-peak period; [ X (a), Y (a), Z (a)]Representing coordinates of the a lowest-ranked device in the target campus in a three-dimensional model of the target campus; b [ t _ i, a ]]A directional distance vector representing the ith person in the target campus and the a lowest ranked device in the target campus at time t of the off-peak hours; 1.5m represents 1.5 m; the angle {, } represents the included angle between two vectors at the left end and the right end of a comma in the bracket; | | represents the modular length of the solved vector; k represents the scaling ratio between the actual real scene and the three-dimensional model of the target park;
the expression that the value of i is substituted into the parenthesis from 1 to N (t) represents the integral arithmetic expression if one or more values of i satisfy the equation in the parenthesis
This is true.
The beneficial effects of the above technical scheme are: by utilizing a first formula (1), according to the pedestrian flow of each lowest-level device in the peak period recorded in the history, the continuous start and stop of the device in the peak period are controlled, so that the peak period is independently controlled, the device is conveniently used by personnel in the peak period to the maximum extent, meanwhile, the device with less pedestrian flow is shut down in the peak period, and further, the aims of energy conservation and emission reduction are partially fulfilled in the peak period; and then, a second formula (2) is utilized to obtain a control value of the lowest-level equipment entering the starting state according to the space coordinate of each lowest-level equipment and the personnel coordinate in the garden, so that the equipment is started when personnel walk to the equipment and are very close to the equipment, the use of the personnel is facilitated, and the intelligent automation advantage of the system is also embodied.
As an optional embodiment, the working state of the lowest level device further includes: a ready state in which the device is powered up but does not operate;
in this embodiment, the preparation state indicates that the device is powered on but does not work, so that the device enters a low power consumption state, which is beneficial to playing a buffering role when the device is controlled to start and stop, and prolonging the service life of the device.
The control module 3 further includes:
a standby state determination unit, configured to, when the off-peak state determination unit calculates that the off-peak start control value of the lowest-level device at the current off-peak time is equal to 0, calculate a control value of the device entering the standby state according to a third formula, and determine that the operating state of the device at the current off-peak time is the standby state when the control value of the device entering the standby state is equal to 1;
the control unit is also used for controlling each lowest-level device to work in the working state determined by the preparation state determining unit;
wherein the third formula is:
in the third formula, P (t, a) represents a control value at which the a-th lowest-ranked equipment enters the standby state at time t of the off-peak period.
In this embodiment, if P (t, a) ═ 1, the a-th lowest-level device is controlled to enter the standby state at time t of the off-peak time period; if P (t, a) is 0, controlling the a-th lowest-level equipment not to reach the conditions of entering an opening state and a standby state at the time t of an off-peak time period; and if the equipment does not reach the conditions of entering the starting state and the preparation state, the equipment is controlled to be closed so as to achieve the effects of energy conservation and emission reduction.
The beneficial effects of the above technical scheme are: and (3) obtaining a control value of the lowest-level equipment entering the preparation state according to the space coordinate position of each lowest-level equipment in the park and the personnel coordinate in the park by using a third formula (3), so that the equipment is intelligently controlled to enter the preparation state, the buffering effect is favorably realized when the control equipment is started and stopped, and the service life of the equipment is prolonged.
As an alternative embodiment, the three-dimensional campus module 1 is further configured to show different operating states of the device in different colors in the three-dimensional model of the target campus.
The beneficial effects of the above technical scheme are: with different colours, the operating condition of display device, for example green is the on-state, and grey is the off-state to bind together the three-dimensional model of colour information and equipment and show, can directly perceivedly show the state and the position of equipment, the operating condition of equipment of the timely understanding of managers of being convenient for.
It can be known from the content of the above embodiment that, after the buildings, equipment, people and the like in the garden are mapped and modeled into the 3D model by using the digital twin technology, the positions of each person and equipment in the garden can be represented by a coordinate point in a rectangular spatial coordinate system of the 3D model, each equipment is firstly assigned with three levels I, II and III, which respectively correspond to the highest level, the medium level and the lowest level, the highest level equipment needs to work all the time and cannot be closed, the medium level equipment needs to be opened and closed by the controllable personnel, and the lowest level equipment controls the equipment state of the lowest level equipment according to the spatial coordinate position of each lowest level equipment in the garden and the coordinates of the person in the garden, so that the purpose of saving energy and reducing emission when necessary is achieved by closing part of the equipment.
The present invention is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations. The above description is only for the specific embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (8)
1. Park management system based on digit twin, its characterized in that includes:
the park three-dimensional module is used for storing and displaying a three-dimensional model of a target park pre-established by a user; the three-dimensional model of the target park at least comprises equipment installed in the target park;
the information acquisition module is used for acquiring the actual position information of each person in the target park in real time, converting the actual position information of each person into the coordinate of the person in the preset three-dimensional space rectangular coordinate system and recording the coordinate;
and the control module is used for controlling the working state of the equipment according to the coordinates of each person in the target park in the preset three-dimensional space rectangular coordinate system and the coordinates of each equipment in the three-dimensional model of the target park.
2. A digital twin based campus management system as claimed in claim 1 wherein the equipment level installed in the target campus is classified as highest, medium, lowest;
the control module is used for controlling the highest-grade equipment to be always in a working state; the control module is also used for receiving an opening/closing instruction of a user for the medium-grade equipment and opening/closing the medium-grade equipment corresponding to the opening/closing instruction; and the control module is also used for controlling the working state of the lowest-level equipment according to the coordinates of each person in the target park in the preset three-dimensional space rectangular coordinate system and the coordinates of each equipment in the three-dimensional model of the target park.
3. The digital twin based park management system of claim 2, the control module comprising:
the peak period state determining unit is used for determining the working state of each lowest-level device in the peak period every day according to the coordinate of each person in the target park in the preset three-dimensional rectangular coordinate system and the coordinate of each lowest-level device in the three-dimensional model of the target park in the history peak period every day recorded by the information acquisition module;
the off-peak period state determining unit is used for determining the working state of each lowest-level device at the off-peak time according to the coordinates of each person in the target park in the preset three-dimensional rectangular coordinate system and the coordinates of each lowest-level device in the three-dimensional model of the target park at the off-peak time;
and the control unit is used for controlling the equipment with the highest grade to be always in the working state, opening/closing the corresponding equipment with the medium grade according to an opening/closing instruction of a user to the equipment with the medium grade, and controlling each equipment with the lowest grade to work in the working state of the equipment determined by the peak period state determining unit or the non-peak period state determining unit.
4. A digital twin based park management system according to claim 3, wherein the operating state of the lowest level of equipment includes: a closed state and an open state;
the peak period state determining unit is specifically configured to calculate a peak period start-stop control value of each lowest-level device in a peak period every day according to a first formula, and determine that the operating state of the lowest-level device in the peak period every day is an on state when the peak period start-stop control value of the lowest-level device is equal to 1, or determine that the operating state of the lowest-level device in the peak period every day is an off state when the peak period start-stop control value of the lowest-level device is equal to 0;
the off-peak period state determining unit is specifically configured to calculate an off-peak period start control value of each lowest-level device at the current off-peak time according to a second formula, and determine that the working state of the device at the current off-peak time is a start state when the off-peak period start control value of the lowest-level device is equal to 1;
wherein the first formula is:
wherein E is z (a) Denotes t at the morning peak of the day z Time t z The peak-period start-stop control value of the a lowest-level equipment within one hour at +60 s; e e (a) Representing t at the peak hours of noon e Time to t e The peak-period start-stop control value of the a lowest-level equipment within one hour at +60 s; e f (a) Representing t at late peak hours f Time t f The peak-period start-stop control value of the a lowest-level equipment within one hour at +60 s; t represents t and is also an integer variable, and the variation of each time is 1 minute; s. the min (a) Representing the minimum distance value in the distances between the a-th lowest-level equipment in the target park and all the lowest-level equipment in the target park; s (t _ i) represents the distance between the ith person in the target park and the a lowest-level equipment in the target park at the time t of the historical record; r2]A judgment function is expressed, if the arithmetic expression in the bracket is established, the function value is 1, and if the arithmetic expression in the bracket is not established, the function value is 0; n (t) represents the total number of people in the target park at time t; m represents the total number of lowest ranked devices in the target campus;
the second formula is:
wherein Q (t, a) represents the off-peak period on control value for the a-th lowest tier device at time t of the current off-peak period; [ x (t _ i), y (t _ i), z (t _ i)]The ith person in the target park at the time t representing the current off-peak time is in the preset three-dimensional space rectangular coordinate systemThe coordinates of (a); 1,2, …, n (t); { x [ (t-1) _ i],y[(t-1)_i],z[(t-1)_i]Representing the coordinate of the ith person in the target park in the preset three-dimensional rectangular coordinate system at the t-1 moment of the off-peak time, and if the ith person is not in the target park at the t-1 moment, taking the coordinate of the ith person as (0,0, 0)); a { [ (t-1) → t]I represents the motion vector of the ith person in the target campus from time t-1 to time t of the off-peak period; [ X (a), Y (a), Z (a)]Representing coordinates of the a-th lowest-level equipment in the target park in the three-dimensional model of the target park; b [ t _ i, a ]]A directional distance vector representing the ith person in the target campus and the a lowest ranked device in the target campus at time t of the off-peak hours; 1.5m represents 1.5 m; the angle {, } represents the included angle between two vectors at the left end and the right end of a comma in the bracket; the | | | represents the modular length of the vector; k represents the scaling ratio between the actual real scene and the three-dimensional model of the target park;
the expression that the value of i is substituted into the parenthesis from 1 to N (t) represents the integral arithmetic expression if one or more values of i satisfy the equation in the parenthesis
This is true.
5. A digital twin based park management system according to claim 4, wherein the operating state of the lowest level of equipment further comprises: a ready state in which the device is powered up but does not operate;
the control module further comprises:
a standby state determination unit, configured to, when the off-peak state determination unit calculates that the off-peak start control value of the lowest-level device at the current off-peak time is equal to 0, calculate a control value of the device entering the standby state according to a third formula, and determine that the operating state of the device at the current off-peak time is the standby state when the control value of the device entering the standby state is equal to 1;
the control unit is also used for controlling each lowest-level device to work in the working state determined by the preparation state determining unit;
wherein the third formula is:
in the third formula, P (t, a) represents a control value at which the a-th lowest-ranked device enters the ready state at time t of the off-peak period.
6. A digital twin based campus management system as claimed in any one of claims 1 to 5 wherein said three dimensional model of the campus is further adapted to display different operating states of the devices in different colours in the three dimensional model of the target campus.
7. A digital twin based park management system according to any one of claims 1 to 5 wherein the three dimensional model of the target park also includes buildings in the target park.
8. A digital twin based park management system according to any one of claims 1 to 5, wherein the apparatus comprises: one or more of lighting equipment, air conditioners and elevators.
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