Energy-saving control method for elevator light curtain and low-power-consumption wireless communication light curtain

Abstract

The invention discloses an elevator light curtain energy-saving control method and a low-power-consumption wireless communication light curtain, and relates to the technical field of elevator control. The elevator light curtain energy-saving control method comprises the steps that firstly, an energy-saving control environment is built, and the energy-saving control environment comprises a camera, a light sensing module, a controller and a master control center; the general control center is used for regulating and controlling the running state of each elevator; step 2, establishing a control logic, which comprises the following steps: a master control center is configured to obtain video data fed back by a camera if the current time is in a preset low-flow time period; the number of people, standing positions and article carrying conditions in the elevator are recognized and analyzed according to the video data, the light curtain monitoring range is adjusted according to the recognition result, and a light curtain adjustment control instruction is output to the corresponding controller; the controller is configured to control the corresponding number of transmitting terminals to be turned on and off if receiving a light curtain adjustment control instruction; monitoring signals fed back by the receiving end are obtained, and the elevator control system is controlled to respond according to the monitoring signals. The method has the effect of reducing energy consumption.

Description

Technical Field

[0001] The present application relates to the field of elevator control technology, and in particular to an elevator light curtain energy-saving control method and a low-power wireless communication light curtain. Background Art

[0002] High-rise buildings will install elevators to facilitate residents' travel. The elevators can quickly transport residents to the required floor by moving the cabin vertically up and down, which is not only convenient but also efficient.

[0003] The efficiency of an elevator is affected not only by the lifting speed but also by the opening and closing of the elevator car door. If the door closes after waiting for too long, the stay time on each floor will be prolonged. For residents living on more floors, the waiting time will be very long. Therefore, the waiting time for the elevator door to close is usually not very long, within a few seconds or a dozen seconds.

[0004] However, if the elevator door decides whether to close only according to the time rule, safety accidents may occur because there will always be users preparing to enter the elevator while the elevator door is closing. Therefore, existing elevators also install light curtains, that is, light sensing systems, on the elevator doors to decide whether to continue closing the door by sensing whether there is an object between the two closed door leaves of the car.

[0005] In order to reduce the blind spots between the door leaves, elevators generally do not have only a few sensing lines, but dense sensing lines are densely distributed from top to bottom between the two door leaves, so as to more comprehensively sense people and objects and ensure the safety of elevator operation. However, this method currently has the following shortcomings: Usually, the dense sensing lines between two door leaves remain in a normally open state even during periods of low traffic, which greatly increases energy consumption. Therefore, the present application proposes a new technical solution. Summary of the invention

[0006] In order to save energy, the present application provides an elevator light curtain energy-saving control method and a low-power wireless communication light curtain.

[0007] In the first aspect, the present application provides an elevator light curtain energy-saving control method, which adopts the following technical solution: An elevator light curtain energy-saving control method, comprising: Step 1: Build an energy-saving control environment, which includes: The camera has a collection range covering the interior of the elevator; The optical sensor module includes multiple sets of transmitters and receivers, which are installed on both sides of the elevator door to detect whether there are obstacles in the elevator door area; A controller, which is electrically connected to the elevator control system and the light sensing module, is used to control the monitoring range of the light sensing module and receive the signal fed back by the light sensing module and respond to the elevator control system, and is used to control the elevator door to remain open or reopen; The main control center is wirelessly connected to the controllers of each elevator and the cameras inside each elevator to control the operating status of each elevator; Step 2: Establish control logic, which includes: The configuration of the master control center is: Get the current time; If the current time is in the preset low-traffic period, the video data fed back by the camera is obtained; According to the video data, the number of people, standing positions, and items carried in the elevator are analyzed, the light curtain monitoring range is adjusted according to the recognition results, and the light curtain adjustment control instructions are output to the corresponding controller; The controller configuration is: If a light curtain adjustment control command is received, the corresponding number of transmitters will be controlled to open or close; Obtain the monitoring signal fed back by the receiving end, and control the elevator control system response according to the monitoring signal.

[0008] Optionally, the identifying and analyzing the number of people, standing positions, and items carried in the elevator according to the video data, and adjusting the light curtain monitoring range according to the identification result, includes: Identify the number of people in the elevator in the video data and determine whether the number meets the preset low-flow number. If so, the light curtain range reduction condition 1 is met; Identify the position of the person in the elevator in the video data, and determine whether the person's position meets the preset area away from the elevator door. If so, the second condition of reducing the light curtain range is met; Identify the volume of items carried by people in the elevator in the video data, and determine whether the volume of the items meets the preset small volume items. If so, the third condition of reducing the light curtain range is met; If any one of the light curtain range reduction conditions 1, 2 and 3 is met, the light curtain monitoring range is adjusted based on a preset light curtain group number reduction rule.

[0009] Optionally, the establishing control logic includes: The configuration of the master control center is: If any controller feedback is received indicating that the current elevator door is not closed normally, the video data fed back by the corresponding camera in the elevator is retrieved to identify and analyze the actual opening and closing of the elevator door in the video data; If the analysis result shows that the elevator door is blocked and closed, the timer starts from the time when the analysis result is generated, and the blocking time is accumulated; If the blocking time is longer than the preset temporary blocking time, a switching contact sensing process control instruction is sent to the controller; The controller configuration is: If a control instruction for switching the contact sensing process is received from the main control center, the contact modules preset on both sides of the elevator door are powered on, and the elevator control system is controlled to respond and control the light sensing module to open and close according to the detection signal fed back by the contact module.

[0010] Optionally, the step of controlling the elevator control system to respond and control the light sensing module to open and close according to the detection signal fed back by the contact module includes: If the detection signal fed back by the contact module indicates that there is contact, the light sensing module is controlled to be closed, and the elevator control system is controlled to control the elevator door to remain open or reopen; If the detection signal fed back by the contact module indicates that there is no contact, the light sensing module is controlled to turn on; If the signal fed back by the light sensor module indicates that there is an obstruction, the elevator control system controls the elevator door to remain open or reopen; If the signal fed back by the light sensing module indicates that there is no obstruction, the elevator control system controls the elevator door to close.

[0011] Optionally, the controller is further configured as: Define the time when the elevator door is ready to close as s1 and the time when the elevator door is completely closed as s2; where s1 and s2 increase in chronological order; If the current time is s1, the light sensing module is controlled to turn on; If the current time is s2, the light sensing module is controlled to be turned off.

[0012] Optionally, the master control center is configured as follows: If an up / down request is received from a user triggering a preset call on a certain floor, the operation status of each elevator and the floor selection command triggered by the user in the car are obtained; wherein the operation status includes position, direction and load; According to the operating status of each elevator, floor selection instructions and up / down requests, the matching path is analyzed and selected based on the preset priority principle, and the corresponding elevator is controlled to respond based on the analysis results.

[0013] In a second aspect, the present application provides a low-power wireless communication light curtain, which adopts the following technical solution: A low-power wireless communication light curtain, comprising a light sensing module, a wireless communication module and a controller, wherein the light sensing module is electrically connected to the controller, the controller is data-connected to the wireless communication module, the controller is electrically connected to a preset elevator control system of an elevator, the controller is data-connected to a preset master control center for controlling the operation of multiple elevators, the master control center is data-connected to a preset camera in the elevator, and the light sensing module comprises a plurality of arrays of transmitting ends and receiving ends arranged at elevator doors; Wherein, the configuration of the master control center is: Get the current time; If the current time is in the preset low-traffic period, the video data fed back by the camera is obtained; According to the video data, the number of people, standing positions, and items carried in the elevator are analyzed, the light curtain monitoring range is adjusted according to the recognition results, and the light curtain adjustment control instructions are output to the corresponding controller; The controller is configured to: if a light curtain adjustment control instruction is received, control the corresponding number of transmitting ends to open and close; obtain the monitoring signal fed back by the receiving end, and control the elevator control system to respond according to the monitoring signal.

[0014] Optionally, the controller is electrically connected to a contact module, which is installed on both sides of the elevator door. The contact module includes a contact plate, a guide rod and a contact sensing module. One side of the contact plate is provided with a spring that extends into a groove pre-opened on the side of the elevator door and is fixedly connected to the spring. The end of the spring abuts against the inner wall of the groove, and the other side of the contact plate extends out of the groove. One end of the guide rod is fixedly connected to the inner wall of the groove, and the other end slides through the extension part of the contact plate. The contact sensing module includes a movable contact, a fixed contact and a control circuit. The control circuit is electrically connected to the fixed contact and the controller. The movable contact is arranged on the contact plate, and the fixed contact is fixedly connected to the door edge of the elevator door where the contact plate can contact or separate.

[0015] Optionally, the elevator door is provided with an upwardly inclined guide surface at the bottom of the groove, and the lower end of the contact plate is provided with an inclined surface matching the guide surface.

[0016] In summary, the present application includes the following beneficial technical effects: during low-traffic periods, by analyzing the number of people in the elevator, the positions of people in the elevator, and whether there are any items carried by people that block people outside the elevator from entering the elevator, the number of light curtains that are opened can be adaptively reduced or increased based on the analysis results, and there is no need to keep the light curtains in a normally open state for a long time, thereby reducing energy consumption and achieving energy-saving control effects. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a flow chart of the method of this application.

[0018] Figure 2 It is a schematic diagram of the elevator door structure on one side of an embodiment of the present application.

[0019] Figure 3 is a cross-sectional view of a contact plate in an embodiment of the present application.

[0020] Figure 4 yes Figure 3 A partial enlarged schematic diagram of part A.

[0021] Explanation of the accompanying drawings: 1. Light sensing module; 2. Contact module; 21. Contact plate; 22. Guide rod; 23. Spring; 24. Guide hole; 3. Groove; 4. Door edge; 51. Movable contact; 52. Fixed contact; 31. Guide surface. DETAILED DESCRIPTION

[0022] The following is combined with Figure 1-4 This application is described in further detail.

[0023] The embodiment of the present application discloses an energy-saving control method for an elevator light curtain.

[0024] Reference Figure 1 , the elevator light curtain energy-saving control method includes: Step 1: Build an energy-saving control environment, which includes: a camera, a light sensing module, a controller and a master control center; the camera's acquisition range covers the interior of the elevator, and the light sensing module includes multiple sets of transmitters and receivers, which are respectively embedded and installed on both sides of the elevator door to detect whether there are obstacles in the elevator door area; the controller is electrically connected to the elevator control system and the light sensing module, and is used to control the monitoring range of the light sensing module and receive the feedback signal of the light sensing module and respond to the elevator control system, and is used to control the elevator door to remain open or reopen; the master control center is wirelessly connected to the controllers of each elevator and the cameras inside each elevator, and is used to view the situation inside each elevator and regulate the operating status of each elevator; Step 2: Establish control logic, which includes: The configuration of the master control center is: Get the current time; If the current time is in a preset low-traffic period, such as between 1 a.m. and 5 a.m., the video data fed back by the camera is obtained; Process the video data (such as decoding, segmentation, and frame image extraction) to identify and analyze the number of people, their positions, and the items they carry in the elevator. Adjust the light curtain monitoring range based on the identification results, such as reducing the number of transmitters that are open, and output light curtain adjustment control instructions to the corresponding controller.

[0025] For example: at 2 a.m., when there is no one in the elevator, the light curtain monitoring range can be reduced, that is, the number of transmitters turned on can be reduced, thereby reducing energy consumption.

[0026] It is understandable that image recognition is an existing technology, and the corresponding samples can be imported into the model for training, so it will not be elaborated; the light curtain monitoring range is adjusted according to the recognition results, and the specific method will be described below.

[0027] The controller configuration is: If a light curtain adjustment control command is received, the corresponding number of transmitters will be controlled to open or close; Obtain the monitoring signal fed back by the receiving end, and control the elevator control system response according to the monitoring signal.

[0028] It is understandable that when the receiving end detects an obstruction, it sends a monitoring signal to the controller, and the controller sends a signal to the elevator control system to control the elevator door to remain open or reopen.

[0029] Through the above settings, during low-flow periods, the number of light curtains opened can be adaptively reduced according to the number of people in the elevator, whether the people in the elevator are standing close to the elevator door, and the items carried by the people. There is no need to keep all light curtains in the normally open state for a long time, thereby reducing energy consumption and achieving energy-saving control effects.

[0030] Regarding the identification and analysis of the number of people, standing positions, and items carried in the elevator based on video data, and adjusting the light curtain monitoring range based on the identification results, the specific methods are as follows: 1) Identify the number of people in the elevator in the video data and determine whether the number meets the preset low-flow number. If so, the light curtain range reduction condition 1 is met; Example: If the number of people in the elevator is less than 2, it meets the low flow occupancy requirement.

[0031] 2) Identify the position of the person in the elevator in the video data and determine whether the person's position meets the preset area away from the elevator door. If so, the second condition of reducing the light curtain range is met; Example: Divide the interior space of the elevator into two parts equally, one part is close to the elevator door, and the other part is far away from the elevator door. If the people in the elevator stand far away from the elevator door, they meet the requirements of the area far away from the elevator door.

[0032] 3) Identify the volume of items carried by people in the elevator in the video data, and determine whether the volume of the items meets the preset small volume items. If so, the third condition of reducing the light curtain range is met; Among them, small volume items can be 0.02-0.05 cubic meters.

[0033] 4) If any one of the above light curtain range reduction conditions 1, 2 and 3 is met, the light curtain monitoring range is adjusted based on the preset light curtain group number reduction rule.

[0034] Through the above settings, based on the number of people in the elevator, their standing positions, and the volume of items carried, if there are few people, their standing positions are far from the elevator door, and they carry small items, coupled with low traffic periods, people will mostly enter and exit the elevator smoothly and quickly, because the elevator door itself is set to stay open for a certain period of time. Generally, in the above situations, the opening time is sufficient for people to enter and exit. Only when the elevator is crowded, or people are standing at the elevator door, or they are carrying large items and it is inconvenient to enter and exit, the light curtain will be triggered when the opening time expires and the people have not yet entered and exited. Therefore, under the conditions of meeting the above conditions, the range of the light curtain can be adaptively reduced to reduce energy consumption.

[0035] In another embodiment of the present application, a control logic is established, which includes: The configuration of the master control center is: If any controller feedback is received indicating that the current elevator door is not closed normally, the video data fed back by the corresponding camera in the elevator is retrieved to identify and analyze the actual opening and closing of the elevator door in the video data; Example: The elevator door remains open for 10 seconds. After 10 seconds, the elevator door is ready to close. If the light sensor module is triggered, the elevator door continues to open for another 10 seconds. If the elevator door still cannot be closed after 10 seconds, it is considered that the elevator door is not closed normally.

[0036] If the analysis result shows that the elevator door is blocked from closing, for example, by a person's hand, leg or other object, the timer starts from the moment the analysis result is generated, and the blocking time is accumulated; If the blocking time is longer than the preset temporary blocking time, for example, 20 seconds, a switching contact sensing process control instruction is sent to the controller.

[0037] Through the above settings, at any time period, if the elevator door is abnormally blocked and occupied for a long time, in order to save energy, there is no need to always use the light sensing module to sense the obstacle. Instead, it can be switched to contact sensing to sense the obstacle, and the elevator door can be opened and closed by the contact sensing signal, thereby reducing energy consumption.

[0038] The controller configuration is: If a control instruction for switching the contact sensing process is received from the main control center, the contact modules preset on both sides of the elevator door are powered on, and the elevator control system is controlled to respond and control the light sensing module to open and close according to the detection signal fed back by the contact module.

[0039] The above-mentioned control of the elevator control system to respond and control the opening and closing of the light sensing module according to the detection signal fed back by the contact module includes: If the detection signal fed back by the contact module indicates that there is contact, for example, a person's hand, leg or other object contacts the contact module, the light sensing module is controlled to be turned off, and the elevator control system controls the elevator door to remain open or reopen; If the detection signal fed back by the contact module indicates that there is no contact (the person removes the object or body part that blocks the elevator door from the contact module), the light sensing module is controlled to turn on to prevent the person from being pinched when the elevator door closes when entering or exiting the elevator next time; If the signal fed back by the light sensor module indicates that there is an obstruction, the elevator control system controls the elevator door to remain open or reopen; If the signal fed back by the light sensor module indicates that there is no obstruction, the elevator control system controls the elevator door to close.

[0040] The specific implementation of the contact module will be described in detail in the following embodiments. In this method, the contact module may have the function of triggering a contact signal through physical contact with a human body part or other objects.

[0041] Through the above settings, when an obstacle triggers the contact module sensing, the elevator door is controlled to open and remain open. At this time, there is no need to open the light curtain. The elevator door is controlled to open and close according to the detection signal fed back by the contact module. When the obstacle is removed and separated from the contact module, the light curtain is opened to prevent people from getting pinched when entering and exiting the elevator after the obstacle is removed. Then, the elevator door is controlled to open and close according to the detection signal of the light sensing module, thereby effectively reducing energy consumption.

[0042] In another embodiment of the present application, since the elevator door itself is set to keep open for a certain period of time, in order to further reduce energy consumption, during the period of time the elevator door is kept open, it is not necessary to turn on the light sensing module. When the light sensing module is needed, it is controlled to be turned on. Therefore, the controller is further configured as follows: Define the time when the elevator door is ready to close as s1 and the time when the elevator door is completely closed as s2; where s1 and s2 increase in chronological order; If the current time is s1, the light sensing module is controlled to turn on; If the current time is s2, the light sensing module is controlled to be turned off.

[0043] Through the above arrangement, when the elevator door is ready to close, the light sensing module is turned on until the elevator door is completely closed, and then the light sensing module is turned off, and then remains in the closed state until the next time the elevator door is ready to close, and then opened, and the cycle continues.

[0044] In another embodiment of the present application, in order to reduce the overall energy consumption of the elevator and reasonably dispatch it, the main control center is configured as follows: If an up / down request is received for a preset call on a certain floor triggered by a user, the operation status of each elevator and the floor selection instruction triggered by the user in the car are obtained, for example, the target floor triggered by the user in the car; wherein the operation status includes position, direction and load; According to the operating status, floor selection instructions and up / down requests of each elevator, the matching path (shortest moving distance or least start / stop times) is analyzed and selected based on the preset principle of priority, and the corresponding elevator is controlled to respond based on the analysis results.

[0045] Example: Assume that there are three elevators A, B, and C in operation. If a passenger enters elevator A on the 2nd floor and presses the target floor 5, elevator B is on the 7th floor, elevator C is on the 1st floor, and a passenger presses the outbound call up button on the 3rd floor. It is analyzed that elevator C needs to move 2 floors to go up to the 3rd floor, and elevator B needs to move 4 floors to go down to the 3rd floor. Since elevator A is in the upward direction and will pass by the 3rd floor, elevator A is dispatched to respond to the outbound call up request on the 3rd floor.

[0046] Through the above settings, the optimal elevator is allocated based on the elevator status (position, direction, load) and request characteristics, reducing the total running distance of the elevator and reducing the overall energy consumption.

[0047] The embodiment of the present application also discloses a low-power wireless communication light curtain.

[0048] Reference Figure 2 and Figure 3 The low-power wireless communication light curtain includes a light sensing module, a wireless communication module, a contact module and a controller. The light sensing module and the contact module are electrically connected to the controller respectively. The controller data is connected to the wireless communication module. The controller data is connected to a preset master control center for controlling the operation of multiple elevators. The master control center data is connected to a preset camera in the elevator. The controller is electrically connected to a preset elevator control system of the elevator. According to the detection signal fed back by the light sensing module, the elevator control system is controlled to respond.

[0049] The light sensing module includes multiple groups of transmitting ends and receiving ends. The transmitting end in each group is installed on one side of the elevator door, and the corresponding receiving end in the same group is installed on the other side of the elevator door. Multiple groups are fixedly installed in a longitudinal array along the elevator door.

[0050] Among them, the configuration of the master control center is: Get the current time; If the current time is in the preset low-traffic period, the video data fed back by the camera is obtained; The number of people, standing positions, and items carried in the elevator are analyzed based on video data recognition, the light curtain monitoring range is adjusted according to the recognition results, and light curtain adjustment control instructions are output to the corresponding controller.

[0051] The controller is configured as follows: if a light curtain adjustment control instruction is received, the corresponding number of transmitting ends are controlled to open and close; the monitoring signal fed back by the receiving end is obtained, and the elevator control system response is controlled according to the monitoring signal.

[0052] Reference Figure 2 and Figure 3 The contact module is installed on both sides of the elevator door and is located on the side of the light sensing module close to the interior of the elevator. The contact module includes a contact plate, a guide rod and a contact sensing module.

[0053] In order to facilitate the movable installation of the contact plate on the side of the elevator door without affecting the normal closing of the elevator doors on both sides, a groove for accommodating the contact plate is provided on the side of the elevator door. The contact plate is arranged in the groove, one side of the contact plate extends into the groove and is fixedly connected with a spring, and the end of the spring is fixedly connected to the fixing block and contacts the inner wall of the groove through the fixing block.

[0054] Through the above arrangement, when the spring is in a natural state, the contact surface of the contact plate for the user to contact extends out of the side surface of the elevator door, so that when a human body or an object blocks the elevator door, it will contact the contact plate, allowing the contact plate to move toward the inside of the groove.

[0055] It should be noted that in order to prevent the contact plate from being triggered when the elevator door opens and closes normally, a door edge extends downward from the outer side of the contact surface of the contact plate at the upper end of the elevator door, so that when the elevator doors on both sides are closed, the two door edges contact each other and the two contact plates do not contact each other.

[0056] In order to better guide the movement of the contact plate, one end of the guide rod is fixedly connected to the inner wall of the groove, the contact plate is provided with a guide hole for the guide rod to pass through, and the other end of the guide rod is slidably passed through the guide hole.

[0057] Reference Figure 3 and Figure 4 The contact sensing module includes a movable contact, a fixed contact and a control circuit. The control circuit is electrically connected to the fixed contact and the controller respectively. The movable contact is embedded in the upper end of the contact surface of the contact plate. The door edge at the upper end of the elevator door is provided for the installation of the fixed contact on the side facing the contact plate. When the spring is in a natural state, the movable contact contacts the fixed contact, causing the control circuit to be turned on and sending a signal to the controller.

[0058] In order to prevent foreign objects such as stones, cards, mobile phone pendants and other small objects from falling into the groove when the user pushes the contact plate, getting stuck between the contact plate and the groove, and hindering the contact plate from resetting, an upward inclined guide surface is provided at the bottom of the groove of the elevator door, and an inclined surface matching the guide surface is provided at the lower end of the contact plate. Therefore, when the user pushes the contact plate inward, even if a small object falls on the guide surface, when the user removes the force applied to the contact plate, the contact plate will move outward and reset under the action of the spring, thereby pushing the small object upward from the guide surface, thereby preventing foreign objects from hindering the movement of the contact plate.

[0059] Due to the provision of the guide surface, the contact plate will generate a longitudinal up-and-down displacement during the lateral movement, so that the guide hole is opened as a vertical strip hole structure, which will not hinder the longitudinal displacement of the contact plate.

[0060] In another embodiment, in order to make the contact sensing module on the contact plate sense more effectively and stably, on the basis of the above, a movable contact can be installed at the lower end of the contact plate and close to the edge of the elevator door, and the fixed contact is installed on the guide surface close to the edge of the elevator door. When the spring is in a natural state, the movable contacts at the upper and lower ends of the contact plate both contact with their corresponding fixed contacts.

[0061] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. An elevator light curtain energy-saving control method, characterized in that: include: Step 1: Build an energy-saving control environment, which includes: The camera has a collection range covering the interior of the elevator; The optical sensor module includes multiple sets of transmitters and receivers, which are installed on both sides of the elevator door to detect whether there are obstacles in the elevator door area; A controller, which is electrically connected to the elevator control system and the light sensing module, is used to control the monitoring range of the light sensing module and receive the signal fed back by the light sensing module and respond to the elevator control system, and is used to control the elevator door to remain open or reopen; The main control center is wirelessly connected to the controllers of each elevator and the cameras inside each elevator to control the operating status of each elevator; Step 2: Establish control logic, which includes: The configuration of the master control center is: Get the current time; If the current time is in the preset low-traffic period, the video data fed back by the camera is obtained; According to the video data, the number of people, standing positions, and items carried in the elevator are analyzed, the light curtain monitoring range is adjusted according to the recognition results, and the light curtain adjustment control instructions are output to the corresponding controller; The controller configuration is: If a light curtain adjustment control command is received, the corresponding number of transmitters will be controlled to open or close; Obtain the monitoring signal fed back by the receiving end, and control the elevator control system response according to the monitoring signal.

2. The elevator light curtain energy-saving control method according to claim 1, characterized in that: The method of identifying and analyzing the number of people, standing positions, and items carried in the elevator according to the video data, and adjusting the light curtain monitoring range according to the identification results, includes: Identify the number of people in the elevator in the video data and determine whether the number meets the preset low-flow number. If so, the light curtain range reduction condition 1 is met; Identify the position of the person in the elevator in the video data, and determine whether the person's position meets the preset area away from the elevator door. If so, the second condition of reducing the light curtain range is met; Identify the volume of items carried by people in the elevator in the video data, and determine whether the volume of the items meets the preset small volume items. If so, the third condition of reducing the light curtain range is met; If any one of the light curtain range reduction conditions 1, 2 and 3 is met, the light curtain monitoring range is adjusted based on a preset light curtain group number reduction rule.

3. The elevator light curtain energy-saving control method according to claim 1, characterized in that: The control logic is established, which includes: The configuration of the master control center is: If any controller feedback is received indicating that the current elevator door is not closed normally, the video data fed back by the corresponding camera in the elevator is retrieved to identify and analyze the actual opening and closing of the elevator door in the video data; If the analysis result shows that the elevator door is blocked and closed, the timer starts from the time when the analysis result is generated, and the blocking time is accumulated; If the blocking time is longer than the preset temporary blocking time, a switching contact sensing process control instruction is sent to the controller; The controller configuration is: If a control instruction for switching the contact sensing process is received from the main control center, the contact modules preset on both sides of the elevator door are powered on, and the elevator control system is controlled to respond and control the light sensing module to open and close according to the detection signal fed back by the contact module.

4. The elevator light curtain energy-saving control method according to claim 3 is characterized in that: The method of controlling the elevator control system to respond and control the light sensing module to open and close according to the detection signal fed back by the contact module includes: If the detection signal fed back by the contact module indicates that there is contact, the light sensing module is controlled to be closed, and the elevator control system is controlled to control the elevator door to remain open or reopen; If the detection signal fed back by the contact module indicates that there is no contact, the light sensing module is controlled to turn on; If the signal fed back by the light sensor module indicates that there is an obstruction, the elevator control system controls the elevator door to remain open or reopen; If the signal fed back by the light sensing module indicates that there is no obstruction, the elevator control system controls the elevator door to close.

5. The elevator light curtain energy-saving control method according to claim 4, characterized in that: The controller is also configured to: Define the time when the elevator door is ready to close as s1 and the time when the elevator door is completely closed as s2; where s1 and s2 increase in chronological order; If the current time is s1, the light sensing module is controlled to turn on; If the current time is s2, the light sensing module is controlled to be turned off.

6. The elevator light curtain energy-saving control method according to claim 1, characterized in that: The configuration of the master control center is: If an up / down request is received for a preset call on a certain floor triggered by a user, the operation status of each elevator and the floor selection command triggered by the user in the car are obtained; wherein the operation status includes position, direction and load; According to the operating status of each elevator, floor selection instructions and up / down requests, the matching path is analyzed and selected based on the preset priority principle, and the corresponding elevator is controlled to respond based on the analysis results.

7. A low-power wireless communication light curtain, characterized in that: It includes a light sensing module, a wireless communication module and a controller, wherein the light sensing module is electrically connected to the controller, the controller is data-connected to the wireless communication module, the controller is electrically connected to a preset elevator control system of the elevator, the controller is data-connected to a preset master control center for controlling the operation of multiple elevators, the master control center is data-connected to a preset camera in the elevator, and the light sensing module includes a plurality of arrays arranged at a transmitting end and a receiving end of the elevator door; Wherein, the configuration of the master control center is: Get the current time; If the current time is in the preset low-traffic period, the video data fed back by the camera is obtained; According to the video data, the number of people, standing positions, and items carried in the elevator are analyzed, the light curtain monitoring range is adjusted according to the recognition results, and the light curtain adjustment control instructions are output to the corresponding controller; The controller is configured to: if a light curtain adjustment control instruction is received, control the corresponding number of transmitting ends to open and close; obtain the monitoring signal fed back by the receiving end, and control the elevator control system to respond according to the monitoring signal.

8. The low-power wireless communication light curtain according to claim 7, characterized in that: The controller is electrically connected to a contact module, which is installed on both sides of the elevator door. The contact module includes a contact plate, a guide rod and a contact sensing module. One side of the contact plate is provided with a spring that extends into a groove pre-opened on the side of the elevator door and is fixedly connected to the spring. The end of the spring abuts against the inner wall of the groove, and the other side of the contact plate extends out of the groove. One end of the guide rod is fixedly connected to the inner wall of the groove, and the other end slides through the extension part of the contact plate. The contact sensing module includes a movable contact, a fixed contact and a control circuit. The control circuit is electrically connected to the fixed contact and the controller. The movable contact is arranged on the contact plate, and the fixed contact is fixedly connected to the door edge of the elevator door where the elevator door can contact or separate from the contact plate.

9. The low-power wireless communication light curtain according to claim 8, characterized in that: The elevator door is provided with an upwardly inclined guide surface at the bottom of the groove, and the lower end of the contact plate is provided with an inclined surface matching the guide surface.

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