Projection system for passenger conveyor
By detecting passenger position and height, a projection device is used to generate projected data covering the passenger's visible area on the passenger conveyor, solving the problems of high display cost and poor display effect on the passenger conveyor and achieving efficient advertising display.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- SHANGHAI MITSUBISHI ELEVATOR CO LTD
- Filing Date
- 2022-08-10
- Publication Date
- 2026-06-05
AI Technical Summary
Existing passenger conveyor display devices are expensive, and the display effect is affected by passenger obstruction and viewing angle issues.
The system uses a detection device to detect the passenger's position and height, determines the projection area, and projects patterns or videos onto the passenger conveyor using a projection device. By combining multiple projection devices, the visible area of the passenger is covered, generating complete projection data while keeping the transparent area free of color light projection.
It improves display quality, reduces display costs, adapts to passengers' viewing angles and addresses obstruction issues, and increases the coverage of advertising displays.
Smart Images
Figure CN115385216B_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of passenger conveyor technology, and more particularly to a projection system for passenger conveyors. Background Technology
[0002] As a type of passenger transport, passenger conveyors have a large passenger flow, relatively long passenger travel time, and relatively wide field of vision for passengers. Therefore, passenger conveyors are quite suitable as a carrier of advertising information.
[0003] Patent document CN200920076524.3 proposes to set up advertising spaces on the top and sides of escalator steps, guardrails and their bases, and the ramp plane between ascending and descending escalators for placing advertisements facing escalator passengers. Patent document CN201580040703.X further proposes to dynamically display the information to be displayed by setting up a display screen on the steps.
[0004] While these solutions involve displaying information across multiple escalator steps, they fail to consider the obstruction of steps by passengers while riding the escalator, as well as the impact of passenger viewing angles due to factors such as height on the actual information received. Furthermore, the cost of escalator steps requiring display functionality is high, and with significant lifting heights and a large number of steps, the cost of the passenger conveyor increases substantially. Summary of the Invention
[0005] The technical problem to be solved by the present invention is to provide a technical solution for displaying patterns or videos on passenger conveyors that can both improve the display effect and reduce the cost.
[0006] To solve the above-mentioned technical problems, the present invention provides a projection system for a passenger conveyor, the projection system comprising a detection device, a determination unit, a generation unit, and a projection device, wherein:
[0007] The detection device is used to detect passengers on the passenger conveyor.
[0008] The determining unit determines the projection area of the passenger conveyor based on the detection results of the detection device and the installation position of the projection device;
[0009] The generation unit generates projection data based on the projection area and the content to be projected.
[0010] The projection device is used to project the projection data onto the projection area.
[0011] Preferably, the detection results of the detection device include the passenger's seating position and height on the passenger conveyor.
[0012] Preferably, the determining unit further includes: a first determining module for determining the visible area of the passenger based on the passenger's seating position, height, and the operating direction of the passenger conveyor; a second determining module for determining the projectable area based on the installation position of the projection device and the passenger's seating position and height; and a third determining module for determining the common part of the visible area and the projectable area as the final projection area.
[0013] Preferably, when multiple projection devices exist, the third determining module determines the final projection area and the selected projection device in any of the following ways: Method 1, the projection device corresponding to the largest projection area is selected as the final projection area; Method 2, the projection device closest to a passenger is selected as the passenger's final projection device, and the projection area corresponding to the selected projection device is determined as the passenger's final projection area; Method 3, from all the projection devices located in front of a passenger, the projection device closest to the passenger is selected as the passenger's final projection device, and the projection area corresponding to the selected projection device is determined as the passenger's final projection area.
[0014] Preferably, the generating unit determines the projection coverage area of the projection device on the passenger conveyor along its projection direction; determines each projection area included in the projection coverage area and its position within the projection coverage area; and generates a complete projection data using the content to be projected in each projection area based on the position of each projection area within the projection coverage area, wherein the position of the content to be projected in each projection area in the projection data is consistent with the position of each projection area within the projection coverage area.
[0015] Preferably, the generating unit keeps the portion of the projected data that does not correspond to a projection area transparent, so that after the projected data is projected, the projection corresponding to the portion of the projected data that does not correspond to a projection area is colorless light.
[0016] Preferably, the installation position of the projection device is in the horizontal width direction, and the distance between the farthest point of the installation position and the nearest side of the passenger conveyor body does not exceed a threshold γ, and the threshold γ satisfies the following: the extension line of the line connecting the installation position and the passenger conveyor protective baffle intersects the step, and the minimum distance between the intersection point and the edge of the step exceeds the threshold.
[0017] Preferably, the projection device is installed in a vertical direction, located on the upper part of the passenger conveyor, and the distance between the installation location and the vertical projection point on the passenger conveyor is not less than a threshold δ, and the threshold δ exceeds the height of an adult.
[0018] Preferably, the projection device is installed in the horizontal length direction, such that the sum of the projection coverage areas of each projection device can cover the entire projection device in the length direction.
[0019] Preferably, when the passenger transport device has a certain tilt angle, if the installation position of the projection device is at the high end of the passenger transport device and is located outside the high end of the passenger transport device, then the angle between the line connecting the installation position and the highest point of the passenger transport device steps and the horizontal plane is greater than the tilt angle of the passenger transport device.
[0020] Preferably, the projection device is mounted at the installation position via a mounting base, the mounting base including an adjustable part, which allows for changing the projection direction of the projection device.
[0021] Preferably, the installation position of the projection device is coordinated with the adjustable part, so that the sum of the projection coverage areas of each projection device can cover the entire projection device in the length direction in the horizontal length direction.
[0022] Preferably, the projection width of the projection device is approximately equal to the display area width of the ladder.
[0023] Preferably, the projection system further includes a projection direction control device, which controls the projection direction of the projection device by controlling the adjustable part of the mounting base.
[0024] Preferably, the projection direction control device determines the desired projection direction based on the line connecting the installation position of the projection device and its projection coverage area, and controls the adjustable part of the mounting base according to the desired projection direction.
[0025] Preferably, when there are multiple projection devices, if there is a projection device or combination of projection devices that has a larger or closer projection area than the projection area of the projection device or combination of projection devices currently performing the projection, the projection is switched to the new projection device or combination of projection devices.
[0026] Compared with the prior art, the beneficial technical effects of the present invention include:
[0027] 1) Determine the visible range of a passenger based on their position, the distance between two adjacent passengers, and their height, and then control the projection of the projection device to improve the display effect;
[0028] 2) It eliminates the need for expensive ladders with display functions and devices, reducing display costs. Attached Figure Description
[0029] Figure 1This is a schematic diagram of the projection system of the present invention for a passenger conveyor.
[0030] Figure 2 This is a schematic diagram of the first and second positions in a specific implementation embodiment;
[0031] Figure 3 This is a schematic diagram of the third position in a specific implementation method;
[0032] Figure 4 This is a schematic diagram showing the passenger positions on the elevator of the passenger conveyor in a specific implementation method; Detailed Implementation
[0033] The following specific embodiments illustrate the implementation of the present invention. Those skilled in the art can fully understand other advantages and technical effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through different specific embodiments, and the details in this specification can also be applied based on different viewpoints, with various modifications or changes made without departing from the overall design concept of the invention. It should be noted that, unless otherwise specified, the following embodiments and features can be combined with each other. The following exemplary embodiments of the present invention can be implemented in many different forms and should not be construed as being limited to the specific embodiments set forth herein. It should be understood that these embodiments are provided to make the disclosure of the present invention thorough and complete, and to fully convey the technical solutions of these exemplary embodiments to those skilled in the art.
[0034] like Figure 1 As shown, taking an escalator as an example, a projection system for a passenger conveyor is provided. The projection system includes a detection device, a determination unit, a generation unit, and a projection device, wherein:
[0035] The detection device is used to detect passengers on the passenger conveyor; the determining unit determines the projection area of the passenger conveyor based on the detection results of the detection device and the installation position of the projection device; the generating unit generates projection data based on the projection area and the content to be projected, the projection data including, for example, a projected image or a projected video; the projection device is used to project the projection data onto the projection area.
[0036] The determining unit further includes: a first determining module, which determines the visible area of the passenger based on the passenger's seating position, height, and the operating direction of the passenger conveyor; a second determining module, which determines the projectable area based on the installation position of the projection device and the passenger's seating position and height; and a third determining module, which determines the common part of the visible area and the projectable area as the final projection area.
[0037] When multiple projection devices exist, the third determining module determines the final projection area and the selected projection device in any of the following ways: Method 1, the projection device corresponding to the largest projection area is selected as the final projection area; Method 2, the projection device closest to a passenger is selected as the passenger's final projection area, and the projection area corresponding to the selected projection device is determined as the passenger's final projection area; Method 3, from all the projection devices located in front of a passenger, the projection device closest to the passenger is selected as the passenger's final projection area, and the projection area corresponding to the selected projection device is determined as the passenger's final projection area.
[0038] Passengers are categorized into elevator passengers and non-elevator passengers based on whether they are on the passenger conveyor.
[0039] The positions of non-escalator passengers relative to the passenger conveyor can be divided into three types, which are defined as the first position, the second position, and the third position.
[0040] The first position is a position located approximately directly opposite the lower end of the passenger conveyor or in front of it, where the distance between the position and the lower end of the passenger conveyor is less than a first distance threshold. For example... Figure 2 Area A.
[0041] When a non-passenger is in the first position and there are no passengers on the step, the first visible area is defined as all the treads of the steps with a height lower than the height of the non-passenger and the portion of the vertical surface of the steps that is higher than the treads of the adjacent steps. The second visible area is defined as the portion of the vertical surface of the steps with a height higher than the height of the non-passenger that is not obscured by the intersection line of the tread and vertical surface of the step preceding it when viewed from the non-passenger's position. The combination of the first and second visible areas is defined as the final visible area.
[0042] When a non-passenger is in the first position and there is a passenger on the step, the visible area is the step between the lower end of the passenger conveyor and the passenger on the step closest to the first position.
[0043] The second position is the position located at the upper end of the passenger conveyor or in front of it, approximately directly opposite the passenger conveyor, and at a distance less than a second distance threshold. For example... Figure 2 In region B, the second distance threshold is less than the vertical distance between the passenger's eyes and the upper end of the passenger conveyor.
[0044] When a non-passenger is in the second position and there are no passengers on the step, the visible area is the part of the step tread that is not obscured by the intersection line of the tread of the previous step and the vertical surface when viewed from the non-passenger's position.
[0045] When a non-passenger is in the second position and there is a passenger on the step, the visible area is the step between the upper end of the passenger conveyor and the passenger on the step closest to the second position.
[0046] The third position is located on the upper level connected to the passenger conveyor, and its projection on the lower level is the lower end of the passenger conveyor, near the passenger conveyor. For example... Figure 3 Region C.
[0047] When a non-passenger is in the third position and there is a passenger on the step, the visible area is the part of all step treads and vertical surfaces of the passenger conveyor that is not obscured by the passenger on the step.
[0048] The identification of passenger locations, as well as the identification of passengers using the elevator and those not using the elevator, can be obtained by cameras installed on the floors, by detection devices configured on the passenger conveyor to detect passengers approaching the entrance of the passenger conveyor (the time when a passenger leaves the passenger conveyor after finishing their elevator ride can be estimated from the moving speed of the passenger conveyor, assuming that the passenger is near the end of the passenger conveyor at this moment), or by detecting the position of detectable items carried by the passenger (such as mobile terminals, various cards, etc.) relative to a reference object (such as a detection device), etc., which will not be listed here.
[0049] like Figure 4 As shown, for elevator passengers, the visible area of the elevator passenger is determined based on the passenger's position on the passenger conveyor, the height of the passenger's eyes relative to their footing, the direction of movement of the passenger conveyor, or the positions of other elevator passengers on the steps on the passenger conveyor.
[0050] For example, when the passenger conveyor is going up and there are no other passengers on the steps, all the steps in front of the passenger are selected, and the passenger's visible area is determined based on the passenger's position and the height of the passenger's eyes relative to their footing.
[0051] For example, when the passenger conveyor is moving upwards and there are other passengers on the passenger conveyor steps, the visible area of the passenger is determined by the steps between the passenger and the other passengers in front and adjacent to it, based on the passenger's position and the height of the passenger's eyes relative to their footing.
[0052] For example, when the passenger conveyor is descending and there are no other passengers on the steps, the entire tread of all the steps in front of that passenger is considered as the visible area.
[0053] For example, when a passenger conveyor is descending and there are other passengers on the steps, the entire tread between that passenger and the passenger in front of them is considered the visible area.
[0054] The generating unit determines the projection coverage area of the projection device on the passenger conveyor along its projection direction;
[0055] Determine the individual projection areas included in the projection coverage area and their positions within the projection coverage area;
[0056] Based on the position of each projection area within the projection coverage area, a complete projection data is generated using the content to be projected in each projection area. The position of the content to be projected in each projection area in the projection data is consistent with the position of each projection area within the projection coverage area.
[0057] The generating unit keeps the portions of the projected data that do not correspond to any projection areas transparent, so that after the projected data is projected, the portions corresponding to the unprojected areas are projected as colorless light. Thus, when projected onto the passenger, only a slight change in brightness occurs.
[0058] For example, the installation position of the projection device is located in the horizontal (passenger conveyor) width direction, and the distance between the farthest point of the installation position and the nearest side of the passenger conveyor body does not exceed a threshold γ, and the threshold γ satisfies the following: the extension line of the line connecting the installation position and the passenger conveyor protective baffle intersects the step, and the minimum distance between the intersection point and the edge of the step exceeds the threshold.
[0059] For example, the installation position of the projection device is in the vertical direction, located on the upper part of the passenger conveyor, and the distance between the installation position and the vertical projection point on the passenger conveyor (the projection point is located on the upper surface of the passenger conveyor) is not less than a threshold δ, and the threshold δ exceeds the height of an adult.
[0060] For example, the projection devices are installed in the horizontal (passenger conveyor) length direction, such that the sum of the projection coverage areas of each projection device can cover the entire projection device in the length direction.
[0061] For example, when the passenger transport device has a certain tilt angle (relative to the horizontal plane), if the installation position of the projection device is at the high end of the passenger transport device and is located outside the high end of the passenger transport device, then the angle between the line connecting the installation position and the highest point of the passenger transport device steps and the horizontal plane is greater than the tilt angle of the passenger transport device.
[0062] For example, the projection device is mounted in a mounting position via a mounting base, the mounting base including an adjustable portion, which allows for changes in the projection direction of the projection device.
[0063] The installation position of the projection device, in conjunction with the adjustable part, allows the combined projection coverage area of each projection device to cover the entire length of the projection device in the horizontal (passenger conveyor) length direction.
[0064] The projection width of the projection device is approximately equal to the width of the display area of the ladder.
[0065] The projection system further includes a projection direction control device, which controls the projection direction of the projection device by controlling the adjustable part of the mounting base.
[0066] The projection direction control device determines the desired projection direction based on the line connecting the installation position of the projection device and its projection coverage area, and controls the adjustable part of the mounting base according to the desired projection direction.
[0067] When multiple projection devices are present, if there is a projection device or combination of projection devices that provides a larger projection area than the currently projecting projection device or combination of projection devices, or that is closer in distance, the system switches to the new projection device or combination of projection devices to perform the projection. This switching involves determining the projection device or combination of projection devices, determining the projection data for the projection device, determining the desired projection direction, and adjusting the adjustable parts of the base to align the actual projection direction with the desired projection direction.
[0068] The present invention has been described in detail above through specific embodiments and examples, but these are not intended to limit the invention. Many modifications and improvements can be made by those skilled in the art without departing from the principles of the invention, and these should also be considered within the scope of protection of the present invention.
Claims
1. A projection system for a passenger conveyor, characterized in that, The projection system includes a detection device, a determination unit, a generation unit, and a projection device, wherein: The detection device is used to detect passengers on the passenger conveyor. The determining unit determines the projection area of the passenger conveyor based on the detection results of the detection device and the installation position of the projection device; The generation unit generates projection data based on the projection area and the content to be projected. The projection device is used to project the projection data onto the projection area; The detection results from the detection device include the passenger's seating position and height on the passenger conveyor. The determining unit further includes: The first determining module determines the passenger's visible area based on the passenger's seating position, height, and the direction of travel of the passenger conveyor. The second determining module is used to determine the projectable area based on the installation position of the projection device and the passenger's seating position and height. The third determining module determines the common part of the visible area and the projectable area as the final projection area.
2. The projection system for a passenger conveyor according to claim 1, characterized in that, When multiple projection devices exist, the third determining module determines the final projection area and the selected projection device in any of the following ways: Method 1: Select the projection device corresponding to the maximum projection area as the selected projection device, and determine the maximum projection area as the final projection area; Method 2: Select the projection device closest to a passenger as the passenger's chosen projection device, and determine the projection area corresponding to the chosen projection device as the passenger's final projection area. Method 3: From all the projection devices located in front of a passenger, select the projection device closest to the passenger as the selected projection device corresponding to the passenger, and determine the projection area corresponding to the selected projection device as the passenger's final projection area.
3. The projection system for a passenger conveyor according to claim 1, characterized in that, The generation unit Determine the projection coverage area of the projection device on the passenger conveyor along its projection direction; Determine the individual projection areas included in the projection coverage area and their positions within the projection coverage area; Based on the position of each projection area within the projection coverage area, a complete projection data is generated using the content to be projected in each projection area. The position of the content to be projected in each projection area in the projection data is consistent with the position of each projection area within the projection coverage area.
4. The projection system for a passenger conveyor according to claim 3, characterized in that, The generating unit keeps the parts of the projection data that do not correspond to the projection area transparent, so that after the projection data is projected, the projection corresponding to the parts of the projection data that do not correspond to the projection area is colorless light.
5. The projection system for a passenger conveyor according to claim 1, characterized in that, The projection device is installed at a position in the horizontal width direction. The distance between the farthest point of the installation position and the nearest side of the passenger conveyor body does not exceed a threshold γ. The threshold γ satisfies the following condition: the extension line of the line connecting the installation position and the passenger conveyor protective baffle intersects the step, and the minimum distance between the intersection point and the edge of the step exceeds the threshold.
6. The projection system for a passenger conveyor according to claim 1, characterized in that, The projection device is installed in a vertical position, located on the upper part of the passenger conveyor, and the distance between the installation position and the vertical projection point on the passenger conveyor is not less than a threshold δ, and the threshold δ exceeds the height of an adult.
7. The projection system for a passenger conveyor according to claim 1, characterized in that, The projection device is installed in the horizontal length direction, so that the sum of the projection coverage areas of each projection device can cover the entire length direction of the projection device.
8. The projection system for a passenger conveyor according to claim 1, characterized in that, When the passenger transport device has a certain tilt angle, if the installation position of the projection device is at the high end of the passenger transport device and is located outside the high end of the passenger transport device, then the angle between the line connecting the installation position and the highest point of the passenger transport device steps and the horizontal plane is greater than the tilt angle of the passenger transport device.
9. The projection system for a passenger conveyor according to claim 1, characterized in that, The projection device is mounted at the installation position via a mounting base, which includes an adjustable part that allows the projection direction of the projection device to be changed.
10. The projection system for a passenger conveyor according to claim 9, characterized in that, The installation position of the projection device, in conjunction with the adjustable part, allows the combined projection coverage area of each projection device to cover the entire length of the projection device in the horizontal direction.
11. The projection system for a passenger conveyor according to claim 9, characterized in that, The projection width of the projection device is comparable to the display area width of the ladder.
12. The projection system for a passenger conveyor according to claim 9, characterized in that, The projection system also includes: The projection direction control device controls the projection direction of the projection device by controlling the adjustable part of the mounting base.
13. The projection system for a passenger conveyor according to claim 12, characterized in that, The projection direction control device determines the desired projection direction based on the line connecting the installation position of the projection device and its projection coverage area, and controls the adjustable part of the mounting base according to the desired projection direction.
14. The projection system for a passenger conveyor according to claim 13, characterized in that, When multiple projection devices exist, if there is a projection device or combination of projection devices that provides a larger or closer projection area than the projection area of the currently projecting projection device or combination of projection devices, switch to the new projection device or combination of projection devices to perform the projection.