Energy saving control method for elevator display device

Abstract

This invention discloses an energy-saving control method for an elevator display device, comprising the following steps: Step S1, dividing the information to be displayed into first display information and second display information; Step S2, determining a first display unit for displaying the first display information and a second display unit for displaying the second display information; Step S3, detecting the passenger's line of sight, position, or number; Step S4, controlling at least one first display unit to display the first display information in a normal display mode according to the detection result, while simultaneously controlling at least one display unit that displays the first display information in a different normal display mode to either turn off or display its information to be displayed in an energy-saving display mode different from the normal display mode. The energy-saving control method of this invention achieves energy savings when there are passengers in the elevator car by appropriately controlling the display units to display the information to be displayed in an energy-saving mode.

Description

Technical Field

[0001] This invention relates to the field of elevators, and more particularly to an energy-saving control method for elevator display devices. Background Technology

[0002] Elevator cars are typically equipped with displays to provide passengers with relevant information. These displays include essential information required by standards and regulations, such as the elevator's direction of travel and the current floor. They also include non-essential information not mandated by standards and regulations, such as the current time, weather, news, floor information, maintenance information, elevator usage information, and public service / commercial advertisements. On the other hand, in upscale locations such as high-end office buildings, where elevators are large (e.g., with wide doors), two control panels (main and auxiliary) are often installed on either side of the elevator doors to facilitate passenger access to information and registration of their destination floor. Each control panel contains displays for both essential and non-essential information.

[0003] Increasing the display area or the number of display devices can provide passengers with richer information, thus improving their elevator experience. However, this also significantly increases elevator energy consumption. To reduce energy consumption on display devices, elevators typically reduce energy consumption and achieve energy savings by turning off interior lighting and displays when the elevator has been idle for a certain period or when no passengers are detected in the car, as per CN201310747061.X and CN201510241767.8. However, this method only addresses energy saving during standby mode and does not address energy saving during non-standby mode (e.g., when passengers are present in the car). Therefore, reducing energy consumption of elevator display devices during non-standby mode becomes a technical problem that needs to be solved. Summary of the Invention

[0004] The summary of this invention introduces a series of simplified concepts, all of which are simplifications of existing technologies in the field. These will be further explained in detail in the specific implementation section. The summary of this invention is not intended to limit the key features and essential technical features of the claimed technical solution, nor is it intended to determine the scope of protection of the claimed technical solution.

[0005] To address the aforementioned technical problems, this invention provides an energy-saving control method for an elevator display device. The elevator display device includes at least two independently controllable display units. Each display unit has at least one normal display mode and at least one energy-saving display mode different from the normal display mode. The energy-saving control method includes the following steps:

[0006] Step S1: Divide the information to be displayed into first display information and second display information. The first display information is the information that must be displayed, and the second display information is other information to be displayed besides the information that must be displayed.

[0007] Step S2: Determine the first display unit for displaying the first display information and the second display unit for displaying the second display information;

[0008] Step S3: Detect the passengers' line of sight, position, or number, and output the detection results;

[0009] Step S4: Based on the detection result, control at least one first display unit to display the first display information in normal display mode, and simultaneously control at least one display unit that displays the first display information in normal display mode to turn off or display the information to be displayed in an energy-saving display mode different from the normal display mode. The energy-saving display mode refers to a low-power display mode different from the normal display mode.

[0010] Preferably, when step S3 detects the passenger's gaze, step S4 further includes:

[0011] Step S411: Determine the passenger's visual focus based on their line of sight;

[0012] Step S412: Determine whether the passenger's visual focus is on a certain display unit;

[0013] Step S413: Based on the judgment result, the display units are divided into displayed units that are being looked at and displayed units that are not being looked at;

[0014] Step S414: Control at least one first display unit to display the first display information in normal display mode, and at the same time control at least one unwatched display unit to turn off or display the first display information or the second display information in an energy-saving display mode different from the normal display mode.

[0015] Preferably, step S411 determines whether a certain display unit is located in front of the passenger's line of sight based on the passenger's line of sight direction and the position of the display unit, and determines the display unit located in front of the passenger's line of sight as the passenger's visual focus.

[0016] Preferably, step S414 further includes:

[0017] Step S4141: Determine whether the passenger's visual focus is on the first display unit. If yes, proceed to step S4142; otherwise, proceed to step S4143.

[0018] Step S4142: Control the display unit that is both the viewed display unit and the first display unit to display the first display information in normal display mode, and proceed to step S4144.

[0019] Step 4143: Control the second display unit where the passenger's visual focus is located and the first display unit closest to the second display unit, so that they display the first display information in normal display mode;

[0020] Step S4144: Control at least one of the remaining display units to turn off or display its information in a low-power display mode.

[0021] Preferably, when there are multiple elevator display devices and all display units in at least one elevator display device are unattended display units, steps S4142 and S4143 control all display units in the elevator display device to which the display unit where the passenger's visual focus is located belongs, so that they display their information to be displayed in normal display mode. Step S4144 controls all display units in the elevator display device to which all display units are unattended, so that they are turned off or display their information to be displayed in low power display mode.

[0022] Preferably, when step S3 detects the passenger's position, step S4 determines the distance between the passenger's position and each display unit, and selects the first display unit corresponding to the shortest distance as the shortest distance first display unit, and controls the shortest distance first display unit to display the first display information in normal display mode.

[0023] Preferably, step S4 controls the display units adjacent to or within a distance threshold of the first display unit with the shortest distance to display the information to be displayed in normal display mode, while controlling other display units except those displaying in normal display mode to turn off or display their information to be displayed in energy-saving display mode.

[0024] Preferably, when there are multiple first display units, step S4 controls the remaining first display units, except for the shortest distance first display unit, to turn off or display the first display information in a low-power display mode.

[0025] Preferably, when step S3 detects the passenger's position, step S4 further includes:

[0026] Step S421: Determine the passenger's movement based on the passenger's location;

[0027] Step S422: Determine the direction of movement when the passenger stops moving or the direction of the trajectory at the end of the movement trajectory based on the passenger's movement.

[0028] Step S423: Use the display unit that points to the direction of movement when the passenger stops moving or the direction of the trajectory at the end of the movement trajectory as the pointing display unit;

[0029] Step S424: Determine whether the pointing display unit is the first display unit. If so, control the pointing display unit to display the first display information in normal display mode and end. Otherwise, proceed to step S425.

[0030] Step S425: Determine the first display unit that is closest to the pointing display unit;

[0031] Step S426: Control the first display unit closest to the pointing display unit to display the first display information in normal display mode, and then end.

[0032] Preferably, when the determination result in step S424 is yes, step S424 further controls the display units adjacent to or at a distance not exceeding a distance threshold from the pointing display unit to display their information to be displayed in normal display mode, while controlling other display units other than those displaying in normal display mode to turn off or display their information to be displayed in energy-saving display mode.

[0033] Preferably, when there are multiple first display units, step S424 controls the display unit that is both a pointing display unit and a first display unit to display the first display information in normal display mode, and controls the other first display units to turn off or display the first display information in low power display mode.

[0034] Preferably, when step S3 detects the passenger's position and there are multiple passengers in the car, step S4 further includes:

[0035] Step S431: Determine the receivable display unit corresponding to the passenger based on the passenger's location and the installation location of each display unit. The receivable display unit refers to the display unit whose displayed information can be received by the passenger.

[0036] Step S432: Find the intersection of the receivable display units corresponding to each passenger;

[0037] Step S433: Determine whether there is at least one first display unit in the intersection. If yes, proceed to step S434; otherwise, proceed to step S435.

[0038] Step S434: Control at least one first display unit in the intersection to display the first information in normal display mode, then end;

[0039] Step S435: Select at least one first display unit from all receivable display units as the selected first display unit, control the selected first display unit to display the first information in normal display mode, and end.

[0040] Preferably, steps S434 and S435 further control at least one of the remaining display units other than the first display unit that is displaying in normal display mode to turn off or display its information to be displayed in low power display mode.

[0041] Preferably, step S434 selects a first display unit located in the intersection and with the smallest total distance from each passenger, or selects a first display unit located in the intersection and with the smallest maximum distance from each passenger, and controls it to display the first information in normal display mode.

[0042] Preferably, step S435 selects the selected first display unit from all receivable display units according to the principle of maximizing the number of passengers who use the selected first display unit as a receivable display unit.

[0043] Preferably, step S435 further controls the elevator-related equipment to output the position information of the first display unit that is displayed in normal display mode, so that passengers who are not the first display unit that is displayed in normal display mode can receive the first display information from the first display unit that is displayed in normal display mode by adjusting their position.

[0044] Preferably, when step S3 detects the number of passengers, step S4 further includes:

[0045] Step S441: Determine the crowding level of the elevator car based on the number of passengers;

[0046] Step S442: Determine the ideal display unit based on the congestion level. The ideal display unit refers to the unit that can achieve a relatively ideal display effect when providing information to passengers. The ideal display effect includes not being obstructed and / or the display unit being close to the passengers.

[0047] Step S443: Determine the information to be displayed based on the ideal display unit;

[0048] Step S444: Determine the display mode when the ideal display unit displays the information to be displayed based on the ideal display unit and the information to be displayed.

[0049] Step S445: Control the ideal display unit to display its information to be displayed in the display mode determined in step S444;

[0050] Step S446: Control the remaining display units other than the ideal display unit to turn off or display their information in a low-power display mode.

[0051] Preferably, when the congestion degree is greater than zero and does not exceed a first threshold,

[0052] √ In step S442, the first display unit located on the upper part of the main control box inside the elevator car, or all display units located on the main control box inside the elevator car, are taken as the ideal display unit;

[0053] √ In step S443, the first display unit located on the upper part of the main control box inside the elevator car is used to display the first display information, and the other display units located on the main control box inside the elevator car are used to display the second display information.

[0054] √ The step S444 at least determines the display mode of the first display unit located above the main control box inside the elevator car to be the normal display mode;

[0055] √When the elevator is also equipped with other display units besides those located in the main control box, step S446 controls them to be turned off or to display their information in a low-power display mode.

[0056] When the congestion level is greater than a first threshold but does not exceed a second threshold

[0057] √ In step S442, all display units are used as the ideal display unit;

[0058] √ In step S443, the first display unit located on the upper part of the main control box inside the elevator car is used to display the first display information. When a secondary control box is configured, the first display unit located on the upper part of the secondary control box is also used to display the first display information, while the remaining display units are used to display the second display information.

[0059] √ Step S444 determines the display mode of all first display units in the ideal display unit as the normal display mode, or determines the display mode of all first display units in the ideal display unit and some or all of the second display units in the ideal display unit as the normal display mode;

[0060] √When there is a second display unit whose display mode is not yet determined, step S446 controls it to turn off and not display or to display its information to be displayed in a low-power display mode.

[0061] When the congestion level is greater than the second threshold

[0062] √ Step S442 uses all first display units as the ideal display units;

[0063] √ Step S443 controls the ideal display unit to display the first display information;

[0064] √ Step S444 determines the display mode of the ideal display unit as the normal display mode;

[0065] When the elevator is equipped with other display units besides the ideal display unit, step S446 controls them to turn off or display their information in a low-power display mode.

[0066] The present invention also provides another energy-saving control method for an elevator display device, wherein the elevator display device comprises at least two independently controllable display units, the display units having a normal display mode and at least one energy-saving display mode different from the normal display mode, and the energy-saving control method includes the following steps:

[0067] Step 1: Establish the display rules for the display unit. The display rules are the rules that determine the display mode adopted by the display unit when displaying the information to be displayed.

[0068] Step 2: Analyze the factors influencing which display mode the display unit adopts in the display rules;

[0069] Step 3: Select variable elements from the influencing elements. The variable elements refer to the influencing elements that have at least two different possible values ​​among all the influencing elements of each display unit of a given elevator, and whose actual values ​​will change with the elevator's usage status / operation status.

[0070] Step 4: Determine the span value of each variable element. The span value satisfies the following condition: when the actual value of a variable element changes from less than the span value to greater than the span value, the display mode of at least one display unit may change from one display mode to another.

[0071] Step 5: Monitor whether the actual value change of the variable element may cause the display mode of at least one display unit to change accordingly. If so, identify the variable element as a specific element and proceed to step 6. Otherwise, keep the original display mode of each display unit unchanged and proceed to step 5.

[0072] Step 6: Identify the specific display unit whose display mode may change due to the specific element, and its display mode before and after the possible change;

[0073] Step 7: Control the specific display unit whose display mode is inconsistent before and after the change, and switch it from the current display mode to the changed display mode.

[0074] Preferably, step 3 selects the variable elements according to the following steps:

[0075] Step 31: List all the influencing factors in the display rules;

[0076] Step 32: Determine the possible values ​​of the influencing factors based on their physical meaning;

[0077] Step 33: Select the influencing factors that have multiple possible values ​​from all influencing factors;

[0078] Step 34: Select the influencing factors that satisfy the following conditions from the influencing factors that have multiple possible values ​​and treat them as variable influencing factors:

[0079] When the installation location of the display device in the designated elevator and the attributes of the information to be displayed remain unchanged, the values ​​of the influencing factors remain fixed.

[0080] Preferably, step 4 determines the span value of the variable element according to the following steps:

[0081] Step 41: Select one unselected variable element from all variable elements and designate it as the selected variable element;

[0082] Step 42: Determine the minimum and maximum possible values ​​of the selected variable element based on its physical meaning;

[0083] Step 43: Let the actual value of the selected variable element gradually increase / decrease from the minimum / maximum value until it reaches its maximum / minimum value, while keeping the values ​​of the other influencing elements unchanged;

[0084] Step 44: During the above-mentioned change of the actual value of the variable element, whenever the display mode of the display unit changes, the actual value of the selected variable element at this time is recorded and used as the span value of the selected variable element, or the display unit where the display mode changes and its display mode before and after the change are also recorded in association.

[0085] Step 45: Determine if there are still any unselected influencing factors. If yes, return to step 41; otherwise, proceed to step 46.

[0086] Step 46, End.

[0087] Preferably, step 5 monitors whether the change in the actual value of the variable element may cause the display mode of at least one display unit to change by monitoring whether the actual value of the variable element moves from one interval to another. The interval is obtained by dividing the value range of the variable element using the span value, and satisfies the following: when the actual value of the variable element moves from one interval to another, the display mode of at least one display unit may change from one display mode to another.

[0088] Compared with the prior art, the energy-saving control method of the present invention is designed for the scenario when there are passengers in the elevator car. Through appropriate control, the display device provides passengers with necessary information such as the floor and direction of travel of the elevator car in normal display mode, while at least one display unit displays the information to be displayed in either off or energy-saving display mode. Therefore, the energy consumption of the elevator display device can be reduced when there are passengers in the elevator car without reducing the passenger's information acquisition experience. Attached Figure Description

[0089] The accompanying drawings are intended to illustrate the general characteristics of the methods, structures, and / or materials used in specific exemplary embodiments of the invention, supplementing the description in the specification. However, the drawings are schematic diagrams not drawn to scale and may not accurately reflect the precise structural or performance characteristics of any of the given embodiments. The drawings should not be construed as limiting or restricting the range of numerical values ​​or properties covered by exemplary embodiments of the invention. The invention will now be described in further detail with reference to the accompanying drawings and specific embodiments:

[0090] Figure 1 This is a schematic diagram of the energy-saving control method for an elevator display device in Example 1;

[0091] Figure 2 These are schematic diagrams of elevator cars in Examples 1 to 3;

[0092] Figure 3 This is a schematic diagram of an elevator display device;

[0093] Figure 4 The diagram shows the elevator car in Examples 4 and 5. Detailed Implementation

[0094] The following specific embodiments illustrate the implementation modes 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, in the absence of conflict, the following embodiments and features in the embodiments 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.

[0095] Example 1

[0096] like Figure 1 As shown, the energy-saving control method for elevator display devices in this embodiment includes the following steps:

[0097] Step S1: Divide the information to be displayed into first display information and second display information. The first display information is the information that must be displayed, and the second display information is other information to be displayed besides the information that must be displayed.

[0098] Step S2: Determine the first display unit for displaying the first display information and the second display unit for displaying the second display information;

[0099] Step S3: Detect the passengers' line of sight, position, or number, and output the detection results;

[0100] Step S4: Based on the detection result, control at least one first display unit to display the first display information in a normal display mode, and simultaneously control at least one display unit that displays the first display information in a normal display mode to turn off or display the information to be displayed in an energy-saving display mode different from the normal display mode. The energy-saving display mode refers to a low-power display mode different from the normal display mode. The low-power display mode includes one or more of the following: a low-brightness display mode with a display brightness lower than that in the normal display mode, a low-refresh-rate display mode with a refresh rate lower than that in the normal display mode, and a low-resolution display mode with a resolution lower than that in the normal display mode.

[0101] For elevator display devices, the information they display generally includes two categories: information that must be displayed according to relevant laws / regulations and other information that is not required to be displayed. The former mainly includes information such as the elevator's direction of travel and the current floor corresponding to the car's location, while the latter mainly includes one or more of the following: current time, weather, news, floor description, maintenance information, elevator usage information, public service advertisements / commercial advertisements.

[0102] The energy-saving control method for an elevator display device in this embodiment is illustrated by an example below:

[0103] Figure 2 The image shows a top view of an elevator car. For example, this elevator car has two control panels, located on either side of the car door. The one on the right is the main control panel, and the one on the left is the auxiliary control panel. Each control panel is equipped with an elevator display device to provide relevant information to passengers. Figure 3 As shown, the elevator display device is equipped with three independently controllable display units: one first display unit and two second display units. Each display unit has a normal display mode and an energy-saving display mode. It should be emphasized that the technical solution of this embodiment does not impose any restrictions on the installation location of the elevator display device (e.g., not on the control panel but directly fixed to the side wall of the car), the number of display units (as long as it exceeds two), their shape, or the relative positions of the display units.

[0104] The elevator display device needs to display the following information: the current floor of the car, the direction of elevator travel, current events, weather information, elevator operation statistics, and floor business information. In step S1, the current floor of the car and the direction of elevator travel are designated as the first display information, while the remaining information is designated as the second display information.

[0105] To ensure that as many passengers as possible can easily obtain the current floor and direction of travel of the elevator, even when the elevator car is crowded, the first display unit used to display the initial information is usually selected as a display unit located at a higher position. For example, Figure 3As shown, in step S2, the display unit at the top of the elevator display device is used as the first display information, and the remaining display units are used as the second display units. After detecting the passenger's line of sight, position, or number in step S3, step S4 controls the first display unit A and / or the first display unit B to display the first display information in normal display mode according to the detection result. At the same time, it controls at least one display unit other than the first display unit displaying the first display information in normal display mode to turn off or display the information to be displayed in an energy-saving display mode different from the normal display mode. It should be noted that since step S4 controls "first display unit A and / or first display unit B" to display the first display information in normal display mode, and the number of display units that are turned off or display the information in an energy-saving display mode different from the normal display mode is not fixed, it may include one or more of the second display units A1, A2, B1, and B2 (especially when only one first display unit is displaying in normal display mode, it may further include the remaining first display unit) that are turned off or display the information in an energy-saving display mode different from the normal display mode. That is, the number of display units that are turned off or display in an energy-saving display mode different from the normal display mode is greater than or equal to 1. Therefore, step S4 can obtain multiple different control results.

[0106] As described above, this embodiment controls at least one first display unit to display first display information in normal display mode, ensuring that it provides the first display information to passengers in normal display mode. At the same time, it controls at least one display unit to either not display or display the information to be displayed in energy-saving mode. Therefore, compared with the prior art, which always displays in normal display mode, the introduction of not displaying or displaying in energy-saving mode can help the elevator display device reduce energy consumption, thereby achieving energy saving.

[0107] Example 2

[0108] This embodiment, based on embodiment 1, provides a more detailed explanation of steps S3 and S4.

[0109] In this embodiment, step S3 detects the passenger's gaze and outputs the detection result. It should be emphasized that the gaze here can be the traditional direction of human eye movement, or it can be an equivalent threshold solution, such as the direction the face is facing or the body is facing forward; these should all be considered as the gaze in the technical solution of this invention. The gaze detection can be implemented using image recognition and other technologies, and will not be described in detail as a key aspect of this invention.

[0110] When step S3 detects the passenger's gaze, step S4 further includes:

[0111] Step S411: Determine the passenger's visual focus based on their line of sight;

[0112] Step S412: Determine whether the passenger's visual focus is on a certain display unit;

[0113] Step S413: Based on the judgment result, the display units are divided into displayed units that are being looked at and displayed units that are not being looked at;

[0114] Step S414: Control at least one first display unit to display the first display information in normal display mode, and at the same time control at least one unwatched display unit to turn off or display the first display information or the second display information in an energy-saving display mode different from the normal display mode.

[0115] In step S411, a display unit is determined to be in front of the passenger's line of sight based on the passenger's line of sight and the position of the display unit, and the display unit in front of the passenger's line of sight is determined to be the passenger's visual focus.

[0116] Step S414 further includes:

[0117] Step S4141: Determine whether the passenger's visual focus is on the first display unit. If yes, proceed to step S4142; otherwise, proceed to step S4143.

[0118] Step S4142: Control the display unit that is both the viewed display unit and the first display unit to display the first display information in normal display mode, and proceed to step S4144.

[0119] Step 4143: Control the second display unit where the passenger's visual focus is located and the first display unit closest to the second display unit, so that they display the first display information in normal display mode;

[0120] Step S4144: Control at least one of the remaining display units to turn off or display its information in a low-power display mode.

[0121] Preferably, when there are multiple elevator display devices and all display units in at least one elevator display device are unattended display units, steps S4142 and S4143 control all display units in the elevator display device to which the display unit where the passenger's visual focus is located belongs, so that they display their information to be displayed in normal display mode. Step S4144 controls all display units in the elevator display device to which all display units are unattended, so that they are turned off or display their information to be displayed in low power display mode.

[0122] This embodiment still uses Figure 2 The example shown is used for illustration. Clearly, of the two passengers in the car, passenger A's line of sight is directly facing the main control panel, while passenger A's line of sight does not directly face the control panel. Therefore, the first display unit A is considered to be in view (assuming the first display unit is positioned slightly above a person's head, and assuming passenger A is currently looking roughly straight ahead or slightly upwards, thus assuming passenger A's line of sight is directly facing the first display unit A). In this case, the first display unit A is the viewed display unit, and the others are unviewed display units. Since the first display unit A is both the viewed display unit and the first display unit, it is controlled to display the first display information in its normal display mode, while at least one of the other display units is controlled to either turn off or display its intended information in a low-power display mode.

[0123] In addition, considering that there are two elevator display devices in this example, and all display units in the elevator display device on the secondary control box are unattended display units, steps S4142 and 4143 control all display units in the elevator display device (i.e., the elevator display device on the main control box) to which the display unit where the passenger's visual focus is located, so that it displays its information to be displayed in normal display mode. Step S4144 controls all display units in the elevator display device (i.e., the elevator display device on the secondary control box) to be turned off or to display its information to be displayed in low power display mode.

[0124] The technical solution of this embodiment determines the display mode of the display unit according to the passenger's line of sight. By controlling the display unit that is not noticed by the passenger to turn off or display in a low-power display mode, the energy consumption of the elevator display device can be reduced while ensuring the passenger's information acquisition experience.

[0125] Example 3

[0126] This embodiment further explains steps S3 and S4 based on embodiment 1.

[0127] In this embodiment, step S3 detects the passenger's position and outputs the detection result. Passenger position detection is simpler and easier than line-of-sight detection, and the recognition accuracy and precision are relatively higher.

[0128] When step S3 detects the passenger's position, step S4 determines the distance between the passenger's position and each display unit, and selects the first display unit corresponding to the shortest distance as the shortest distance first display unit, and controls the shortest distance first display unit to display the first display information in normal display mode.

[0129] Step S4 controls the display units adjacent to or within a distance threshold of the first display unit with the shortest distance to display the information to be displayed in normal display mode, while controlling other display units except those displaying in normal display mode to turn off or display their information to be displayed in energy-saving display mode.

[0130] When there are multiple first display units, step S4 controls the remaining first display units, except for the shortest distance first display unit, to turn off or display the first display information in a low-power display mode.

[0131] The following description uses examples from the embodiments. Figure 2 It is known that passenger A and passenger B are both closer to the first display unit A and farther from the first display unit B. Therefore, step S4 uses the first display unit A as the shortest distance first display unit and controls the first display unit A to display the first display information in normal display mode. Alternatively, step S4 also controls the second display unit A1 adjacent to the first display unit A and the second display unit A2 closer to the first display unit A to also display the information to be displayed in normal display mode, while controlling other display units (in this example, mainly the various display units in the elevator display device on the auxiliary control box) to turn off or display their information to be displayed in energy-saving display mode.

[0132] The technical solution of this embodiment determines the display mode of the display unit according to the passenger's position. By controlling the display unit that is not noticed by the passenger to turn off or display in a low-power display mode, the energy consumption of the elevator display device can be reduced while ensuring the passenger's information acquisition experience.

[0133] Example 4

[0134] Based on Example 1, in step S3 of Example 4, the detection result is output by detecting the passenger's position.

[0135] When step S3 detects the passenger's position, step S4 further includes: step S421, determining the passenger's movement based on the passenger's position; step S422, determining the direction of movement when the passenger stops moving or the trajectory direction at the end of the movement trajectory based on the passenger's movement; step S423, using the display unit pointed to by the direction of movement when the passenger stops moving or the trajectory direction at the end of the movement trajectory as the pointing display unit; step S424, determining whether the pointing display unit is the first display unit; if so, controlling the pointing display unit to display the first display information in normal display mode, and ending the process; otherwise, proceeding to step S425; step S425, determining the first display unit closest to the pointing display unit; step S426, controlling the first display unit closest to the pointing display unit to display the first display information in normal display mode, and ending the process.

[0136] When the judgment result in step S424 is yes, step S424 also controls the display units adjacent to the pointing display unit or whose distance from it does not exceed the distance threshold to display their information to be displayed in normal display mode, and controls other display units other than those displaying in normal display mode to turn off or display their information to be displayed in energy-saving display mode.

[0137] When there are multiple first display units, step S424 controls the display unit that is both a pointing display unit and a first display unit to display the first display information in normal display mode, and controls the remaining first display units to turn off or display the first display information in low power display mode.

[0138] by Figure 4 For example, when passenger B stops moving, the display unit that the direction of movement points to is the display unit on the main control box. Therefore, each display unit on the main control box serves as a pointing display unit, one of which is the first display unit. Thus, the first display unit on the main control box is controlled to display the first display information in normal display mode, and the second display unit on the nearby main control box is also controlled to display the information to be displayed in normal display mode. At the same time, the display units in the elevator display device on the auxiliary control box are controlled to turn off or display their information to be displayed in energy-saving display mode.

[0139] The technical solution of this embodiment determines the passenger's movement based on the passenger's location, and determines the display mode of the display unit based on the passenger's movement. By controlling the display unit that is not noticed by the passenger to turn off or display in a low-power display mode, the energy consumption of the elevator display device can be reduced while ensuring the passenger's information acquisition experience.

[0140] Example 5

[0141] Based on Example 1, in step S3 of Example 5, the detection result is output by detecting the passenger's position.

[0142] When step S3 detects the passenger's position and there are multiple passengers and multiple first display units in the car, step S4 further includes:

[0143] Step S431: Determine the receivable display unit corresponding to the passenger based on the passenger's location and the installation location of each display unit. The receivable display unit refers to the display unit whose displayed information can be received by the passenger.

[0144] Step S432: Find the intersection of the receivable display units corresponding to each passenger;

[0145] Step S433: Determine whether there is at least one first display unit in the intersection. If yes, proceed to step S434; otherwise, proceed to step S435.

[0146] Step S434: Control at least one first display unit in the intersection to display the first information in normal display mode, then end;

[0147] Step S435: Select at least one first display unit from all receivable display units as the selected first display unit, control the selected first display unit to display the first information in normal display mode, and end.

[0148] Preferably, steps S434 and S435 further control at least one of the remaining display units other than the first display unit that is displaying in normal display mode to turn off or display its information to be displayed in low power display mode.

[0149] like Figure 4 As shown, passenger A's position can receive signals from two first display units, while passenger B's position can only receive signals from one first display unit (the first display unit on the other auxiliary control box is blocked by passenger A due to its position). Their intersection is the first display unit on the main control box, which they can both receive signals from. Therefore, the first display unit on the main control box is controlled to display the first information in normal display mode. The display units on the auxiliary control boxes are controlled to either turn off or display their intended information in energy-saving mode.

[0150] Preferably, step S434 selects a first display unit located in the intersection and with the smallest total distance from each passenger, or selects a first display unit located in the intersection and with the smallest maximum distance from each passenger, and controls it to display the first information in normal display mode.

[0151] Preferably, step S435 selects the selected first display unit from all receivable display units according to the principle of maximizing the number of passengers who use the selected first display unit as a receivable display unit.

[0152] Preferably, step S435 further controls the elevator-related equipment to output the position information of the first display unit that is displayed in normal display mode, so that passengers who are not the first display unit that is displayed in normal display mode can receive the first display information from the first display unit that is displayed in normal display mode by adjusting their position.

[0153] The technical solution of this embodiment determines the display unit that can be received by the passenger based on the passenger's position and the installation position of each display unit. By controlling the display unit that cannot be received by the passenger to turn off or display in a low-power display mode, the energy consumption of the elevator display device can be reduced while ensuring the passenger's information acquisition experience.

[0154] Example 6

[0155] Based on Example 1, in step S3 of Example 6, the detection result is output by detecting the number of passengers.

[0156] When step S3 detects the number of passengers, step S4 further includes:

[0157] Step S441: Determine the crowding level of the elevator car based on the number of passengers; Step S442: Determine the ideal display unit based on the crowding level. The ideal display unit refers to the unit that can achieve a relatively ideal display effect when providing information to passengers. The ideal display effect includes not being obstructed and / or the display unit being close to the passengers; Step S443: Determine the information to be displayed based on the ideal display unit; Step S444: Determine the display mode when the ideal display unit displays the information to be displayed based on the ideal display unit and the information to be displayed; Step S445: Control the ideal display unit to display the information to be displayed in the display mode determined in step S444; Step S446: Control the other display units besides the ideal display unit to turn off or display the information to be displayed in a low-power display mode.

[0158] When the congestion level is greater than zero and does not exceed a first threshold

[0159] √ In step S442, the first display unit located on the upper part of the main control box inside the elevator car, or all display units located on the main control box inside the elevator car, are taken as the ideal display unit;

[0160] √ In step S443, the first display unit located on the upper part of the main control box inside the elevator car is used to display the first display information, and the other display units located on the main control box inside the elevator car are used to display the second display information.

[0161] √ The step S444 at least determines the display mode of the first display unit located above the main control box inside the elevator car to be the normal display mode;

[0162] √When the elevator is also equipped with other display units besides those located in the main control box, step S446 controls them to be turned off or to display their information in a low-power display mode.

[0163] When the congestion level is greater than a first threshold but does not exceed a second threshold

[0164] √ In step S442, all display units are used as the ideal display unit;

[0165] √ In step S443, the first display unit located on the upper part of the main control box inside the elevator car is used to display the first display information. When a secondary control box is configured, the first display unit located on the upper part of the secondary control box is also used to display the first display information, while the remaining display units are used to display the second display information.

[0166] √ Step S444 determines the display mode of all first display units in the ideal display unit as the normal display mode, or determines the display mode of all first display units in the ideal display unit and some or all of the second display units in the ideal display unit as the normal display mode;

[0167] √When there is a second display unit whose display mode is not yet determined, step S446 controls it to turn off and not display or to display its information to be displayed in a low-power display mode.

[0168] When the congestion level is greater than the second threshold

[0169] √ Step S442 uses all first display units as the ideal display units;

[0170] √ Step S443 controls the ideal display unit to display the first display information;

[0171] √ Step S444 determines the display mode of the ideal display unit as the normal display mode;

[0172] √When the elevator is equipped with other display units besides the ideal display unit, step S446 controls them to turn off or display their information in a low-power display mode.

[0173] Controlling passenger flow by detecting the number of passengers requires less computation than detecting passengers' line of sight and position, as it eliminates the need for calculations and judgments for each individual passenger.

[0174] Example 7

[0175] The energy-saving control method for elevator display devices in Example 7 achieves the switching of display modes of the display unit by monitoring variables, which is closer to engineering practice.

[0176] The energy-saving control method in this embodiment includes the following steps:

[0177] Step 1: Establish the display rules for the display unit. The display rules are the rules that determine the display mode adopted by the display unit when displaying the information to be displayed.

[0178] Step 2: Analyze the factors influencing which display mode the display unit adopts in the display rules;

[0179] Step 3: Select variable elements from the influencing elements. The variable elements refer to the influencing elements that have at least two different possible values ​​among all the influencing elements of each display unit of a given elevator, and whose actual values ​​will change with the elevator's usage status / operation status.

[0180] Step 4: Determine the span value of each variable element. The span value satisfies the following condition: when the actual value of a variable element changes from less than the span value to greater than the span value, the display mode of at least one display unit may change from one display mode to another.

[0181] Step 5: Monitor whether the actual value change of the variable element may cause the display mode of at least one display unit to change accordingly. If so, identify the variable element as a specific element and proceed to step 6. Otherwise, keep the original display mode of each display unit unchanged and proceed to step 5.

[0182] Step 6: Identify the specific display unit whose display mode may change due to the specific element, and its display mode before and after the possible change;

[0183] Step 7: Control the specific display unit whose display mode is inconsistent before and after the change, and switch it from the current display mode to the changed display mode.

[0184] Energy-saving display mode is also known as low-power display mode. Low-power display modes include one or more of the following: low-brightness display mode with a lower display brightness than normal display mode, low-refresh-rate display mode with a lower refresh rate than normal display mode, and low-resolution display mode with a lower resolution than normal display mode.

[0185] Step 3 involves selecting the variable elements as follows:

[0186] Step 31: List all the influencing factors in the display rules;

[0187] Step 32: Determine the possible values ​​of the influencing factors based on their physical meaning;

[0188] Step 33: Select the influencing factors that have multiple possible values ​​from all influencing factors;

[0189] Step 34: Select the influencing factors that satisfy the following conditions from the influencing factors that have multiple possible values ​​and treat them as variable influencing factors:

[0190] When the installation location of the display device in the designated elevator and the attributes of the information to be displayed remain unchanged, the values ​​of the influencing factors remain fixed.

[0191] Step 4 determines the span value of the variable element according to the following steps:

[0192] Step 41: Select one unselected variable element from all variable elements and designate it as the selected variable element;

[0193] Step 42: Determine the minimum and maximum possible values ​​of the selected variable element based on its physical meaning;

[0194] Step 43: Let the actual value of the selected variable element gradually increase / decrease from the minimum / maximum value until it reaches its maximum / minimum value, while keeping the values ​​of the other influencing elements unchanged;

[0195] Step 44: During the above-mentioned change of the actual value of the variable element, whenever the display mode of the display unit changes, the actual value of the selected variable element at this time is recorded and used as the span value of the selected variable element, or the display unit where the display mode changes and its display mode before and after the change are also recorded in association.

[0196] Step 45: Determine if there are still any unselected influencing factors. If yes, return to step 41; otherwise, proceed to step 46.

[0197] Step 46, End.

[0198] Step 5 monitors whether changes in the actual value of the variable element, by monitoring whether it moves from one interval to another, might cause a change in the display mode of at least one display unit. The interval is obtained by dividing the value range of the variable element using the crossing value, and satisfies the following condition: when the actual value of the variable element moves from one interval to another, the display mode of at least one display unit may change from one display mode to another. For example, the variable element is the number of passengers; the crossing values ​​are a first threshold and a second threshold.

[0199] Unless otherwise defined, all terms used herein (including technical and scientific terms) shall have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. It will also be understood that, unless expressly defined herein, terms such as those defined in a general dictionary shall be interpreted as having the meaning consistent with their meaning in the relevant field context, and not as having an idealized or overly formal meaning.

[0200] The present invention has been described in detail above through specific implementation modes and embodiments, but these are not intended to limit the present invention. Many modifications and improvements can be made by those skilled in the art without departing from the principles of the present invention, and these should also be considered within the scope of protection of the present invention.

Claims

1. An energy-saving control method for an elevator display device, wherein the elevator display device comprises at least two independently controllable display units, each display unit having at least one normal display mode and at least one energy-saving display mode different from the normal display mode, characterized in that, The energy-saving control method includes the following steps: Step S1, dividing the information to be displayed into first display information and second display information, wherein the first display information is the information to be displayed that must be displayed, and the second display information is other information to be displayed besides the information to be displayed that must be displayed; Step S2: Determine the first display unit for displaying the first display information and the second display unit for displaying the second display information; Step S3: Detect the passengers' line of sight, position, or number, and output the detection results; Step S4: Based on the detection result, control at least one first display unit to display the first display information in normal display mode, and at the same time control at least one display unit that displays the first display information in normal display mode to turn off or display the information to be displayed in an energy-saving display mode different from the normal display mode. The energy-saving display mode refers to a low-power display mode different from the normal display mode. When step S3 detects the number of passengers, step S4 further includes: Step S441: Determine the crowding level of the elevator car based on the number of passengers; Step S442: Determine the ideal display unit based on the congestion level. The ideal display unit refers to the unit that can achieve a relatively ideal display effect when providing information to passengers. The ideal display effect includes not being obstructed and / or the display unit being close to the passengers. Step S443: Determine the information to be displayed based on the ideal display unit. Step S444: Determine the display mode when the ideal display unit displays the information to be displayed based on the ideal display unit and the information to be displayed. Step S445: Control the ideal display unit to display its information in the display mode determined in step S444; Step S446: Control the remaining display units other than the ideal display unit to turn off or display their information in a low-power display mode; When the congestion level is greater than zero and does not exceed the first threshold, step S442 uses the first display unit located on the upper part of the main control box inside the elevator car, or all display units located on the main control box inside the elevator car, as the ideal display unit. In step S443, the first display unit located on the upper part of the main control box inside the elevator car is used to display the first display information, and the remaining display units located on the main control box inside the elevator car are used to display the second display information. Step S444 at least determines the display mode of the first display unit located above the main control box inside the elevator car to be the normal display mode; When the elevator is also equipped with other display units besides those located in the main control box, step S446 controls them to be turned off or to display their information in a low-power display mode. When the congestion level is greater than a first threshold but not exceeding a second threshold, step S442 designates all display units as the ideal display units; step S443 uses the first display unit located above the main control panel inside the elevator car to display the first display information, and when a secondary control panel is configured, the first display unit located above the secondary control panel is also used to display the first display information, while the remaining display units are used to display the second display information; step S444 determines the display mode of all first display units in the ideal display units as the normal display mode, or determines the display mode of all first display units and some or all of the second display units in the ideal display units as the normal display mode; when there are still second display units whose display mode has not been determined, step S446 controls them to turn off or display their information to be displayed in a low-power display mode; when the congestion level is greater than the second threshold, step S442 designates all first display units as the ideal display units; step S443 controls the ideal display units to display the first display information; step S444 The display mode of the ideal display unit is set to the normal display mode; when the elevator is equipped with other display units besides the ideal display unit, step S446 controls them to turn off or display their information to be displayed in a low-power display mode.

2. The energy-saving control method for elevator display devices according to claim 1, characterized in that, When step S3 detects the passenger's gaze, step S4 further includes: Step S411: Determine the passenger's visual focus based on their line of sight; Step S412: Determine whether the passenger's visual focus is on a certain display unit; Step S413: Based on the judgment result, the display units are divided into displayed units that are being looked at and displayed units that are not being looked at; Step S414: Control at least one first display unit to display the first display information in normal display mode, and at the same time control at least one unwatched display unit to turn off or display the first display information or the second display information in an energy-saving display mode different from the normal display mode.

3. The energy-saving control method for elevator display devices according to claim 2, characterized in that, Step S411 determines whether a certain display unit is located in front of the passenger's line of sight based on the passenger's line of sight direction and the position of the display unit, and determines the display unit located in front of the passenger's line of sight as the passenger's visual focus.

4. The energy saving control method for an elevator display device according to claim 2, characterized by, Step S414 further includes: Step S4141: Determine whether the passenger's visual focus is on the first display unit. If so, proceed to step S4142; otherwise, proceed to step S4143. Step S4142: Control the display unit that is both the viewed display unit and the first display unit to display the first display information in normal display mode, and proceed to step S4144. Step S4143: Control the second display unit where the passenger's visual focus is located and the first display unit closest to the second display unit, so that they display the first display information in normal display mode; Step S4144: Control at least one of the remaining display units to turn off or display its information in a low-power display mode.

5. The energy saving control method for an elevator display device according to claim 4, characterized by, When there are multiple elevator display devices and all display units in at least one elevator display device are unattended display units, steps S4142 and S4143 control all display units in the elevator display device to which the display unit where the passenger's visual focus is located belongs, so that they display the information to be displayed in normal display mode. Step S4144 controls all display units in the elevator display device where all display units are unattended, so that they are turned off or display the information to be displayed in low power display mode.

6. The energy saving control method for an elevator display device according to claim 1, characterized by, When step S3 detects the passenger's position, step S4 determines the distance between the passenger's position and each display unit, and selects the first display unit corresponding to the shortest distance as the shortest distance first display unit, and controls the shortest distance first display unit to display the first display information in normal display mode.

7. The energy saving control method for an elevator display device according to claim 6, characterized by, Step S4 controls the display units adjacent to or within a distance threshold of the first display unit with the shortest distance to display the information to be displayed in normal display mode, while controlling other display units except those displaying in normal display mode to turn off or display their information to be displayed in energy-saving display mode.

8. The energy saving control method for an elevator display device according to claim 6, characterized by, When there are multiple first display units, step S4 controls the remaining first display units, except for the shortest distance first display unit, to turn off or display the first display information in a low-power display mode.

9. The energy-saving control method for an elevator display device according to claim 1, characterized in that, When step S3 detects the passenger's location, step S4 further includes: Step S421: Determine the passenger's movement based on the passenger's location; Step S422: Determine the direction of movement when the passenger stops moving or the direction of the trajectory at the end of the movement trajectory based on the passenger's movement. Step S423: Use the display unit that points to the direction of movement when the passenger stops moving or the direction of the trajectory at the end of the movement trajectory as the pointing display unit; Step S424: Determine whether the pointing display unit is the first display unit. If so, control the pointing display unit to display the first display information in normal display mode and end. Otherwise, proceed to step S425. Step S425: Determine the first display unit that is closest to the pointing display unit; Step S426: Control the first display unit closest to the pointing display unit to display the first display information in normal display mode, and then end.

10. The energy saving control method for an elevator display device according to claim 9, characterized by, When the judgment result in step S424 is yes, step S424 also controls the display units adjacent to the pointing display unit or whose distance from it does not exceed the distance threshold to display their information to be displayed in normal display mode, and controls other display units other than those displaying in normal display mode to turn off or display their information to be displayed in energy-saving display mode.

11. The energy-saving control method for an elevator display device according to claim 9, characterized in that, When there are multiple first display units, step S424 controls the display unit that is both a pointing display unit and a first display unit to display the first display information in normal display mode, and controls the other first display units to turn off or display the first display information in low power display mode.

12. The energy saving control method for an elevator display device according to claim 1, characterized by, When step S3 detects the passenger's position and there are multiple passengers in the car, step S4 further includes: Step S431: Determine the receivable display unit corresponding to the passenger based on the passenger's location and the installation location of each display unit. The receivable display unit refers to the display unit whose displayed information can be received by the passenger. Step S432: Find the intersection of the receivable display units corresponding to each passenger; Step S433: Determine whether there is at least one first display unit in the intersection. If yes, proceed to step S434; otherwise, proceed to step S435. Step S434: Control at least one first display unit in the intersection to display the first information in normal display mode, then end; Step S435: Select at least one first display unit from all receivable display units as the selected first display unit, control the selected first display unit to display the first information in normal display mode, and end.

13. The energy saving control method for an elevator display device according to claim 12, characterized by, Steps S434 and S435 further control at least one of the remaining display units other than the first display unit that is displaying in normal display mode to turn off or display its information to be displayed in low power display mode.

14. The energy-saving control method for an elevator display device according to claim 12, characterized in that, In step S434, the first display unit located in the intersection and having the smallest total distance from each passenger is selected from the first display units in the intersection, or the first display unit located in the intersection and having the smallest maximum distance from each passenger is selected, and the first information is displayed in normal display mode by control.

15. The energy saving control method for an elevator display device according to claim 12, wherein, Step S435 selects the first display unit from all receivable display units according to the principle of maximizing the number of passengers who can receive the first display unit.

16. The energy-saving control method for an elevator display device according to any one of claims 12 to 15, characterized in that, Step S435 further controls the elevator-related equipment to output the position information of the first display unit that is displayed in normal display mode, so that passengers who are not the first display unit that is displayed in normal display mode can receive the first display information from the first display unit that is displayed in normal display mode by adjusting their position.

17. A method for energy saving control of an elevator display device, said elevator display device comprising at least two independently controllable display units, said display units having a normal display mode and at least one energy saving display mode different from said normal display mode, characterized in that, The energy-saving control method includes the following steps: Step 1: Establish the display rules for the display unit. The display rules are the rules that determine the display mode adopted by the display unit when displaying the information to be displayed. Step 2: Analyze the factors influencing which display mode the display unit adopts in the display rules; Step 3: Select variable elements from the influencing elements. The variable elements refer to the influencing elements that have at least two different possible values ​​among all the influencing elements of each display unit of a given elevator, and whose actual values ​​will change with the elevator's usage status / operation status. Step 4: Determine the span value of each variable element. The span value satisfies the following condition: when the actual value of a variable element changes from less than the span value to greater than the span value, the display mode of at least one display unit may change from one display mode to another. Step 5: Monitor whether the actual value change of the variable element may cause the display mode of at least one display unit to change accordingly. If so, identify the variable element as a specific element and proceed to step 6. Otherwise, keep the original display mode of each display unit unchanged and proceed to step 5. Step 6: Identify the specific display unit whose display mode may change due to the specific element, and its display mode before and after the possible change; Step 7: Control the specific display unit whose display mode is inconsistent before and after the change, and switch it from the current display mode to the changed display mode.

18. The energy-saving control method for an elevator display device according to claim 17, characterized in that, Step 3 involves selecting the variable elements as follows: Step 31: List all the influencing factors in the display rules; Step 32: Determine the possible values ​​of the influencing factors based on their physical meaning; Step 33: Select the influencing factors that have multiple possible values ​​from all influencing factors; Step 34: Select the influencing factors that satisfy the following conditions from the influencing factors that have multiple possible values ​​and treat them as variable influencing factors: When the installation location of the display device in the designated elevator and the attributes of the information to be displayed remain unchanged, the values ​​of the influencing factors remain fixed.

19. The energy-saving control method for an elevator display device according to claim 17, characterized in that, Step 4 determines the span value of the variable element according to the following steps: Step 41: Select one unselected variable element from all variable elements and designate it as the selected variable element; Step 42: Determine the minimum and maximum possible values ​​of the selected variable element based on its physical meaning; Step 43: Gradually increase / decrease the actual value of the selected variable element from the minimum / maximum value until it reaches the maximum value. It reaches its maximum / minimum value while keeping the values ​​of other influencing factors unchanged; Step 44: During the above-mentioned change of the actual value of the variable element, whenever the display mode of the display unit changes, the actual value of the selected variable element at this time is recorded and used as the span value of the selected variable element, or the display unit where the display mode changes and its display mode before and after the change are also recorded in association. Step 45: Determine if there are still any unselected influencing factors. If yes, return to step 41; otherwise, proceed to step 46. Step 46, End.

20. The energy-saving control method for an elevator display device according to claim 17, characterized in that, Step 5 monitors whether the change in the actual value of the variable element may cause the display mode of at least one display unit to change by monitoring whether the actual value of the variable element moves from one interval to another. The interval is obtained by dividing the value range of the variable element using the span value, and satisfies the following: when the actual value of the variable element moves from one interval to another, the display mode of at least one display unit may change from one display mode to another.

Images