Elevator system

Abstract

This invention discloses an elevator system in which a first display device is located between the building entrance and the elevator lobby on the floor where the entrance is located. A detection device detects elevator passengers entering the building, obtains their destination floor, and sends elevator passenger information. A call signal generation module generates a call signal based on the elevator passenger information. An elevator group management system allocates a response elevator identifier based on the call signal and sends it to the display control device. The display control device controls the first display device to display the response elevator identifier. This elevator system can automatically complete passenger destination floor registration. After entering the building, as passengers move along the path from the building entrance to the elevator lobby, they can see the response elevator identifier displayed on the first display device. Passengers can know their response elevator identifier before reaching the elevator lobby, thus smoothly arriving at their assigned elevator without any operation.

Description

Technical Field

[0001] This invention relates to elevator control technology, and specifically to an elevator system. Background Technology

[0002] Chinese patent documents CN102101614B, CN104210910B, and CN103010873B propose a solution for situations where turnstiles and security gates are installed at the entrance of elevator lobbies. This solution utilizes a reading device to obtain passengers' destination floor registration information and displays the elevator allocation results based on this information in a display fixed to the turnstiles and security gates. However, this solution has several drawbacks. First, the presence of turnstiles and security gates limits its applicability and increases the system's manufacturing costs, installation site requirements, and construction costs. Second, the display of elevator allocation results is fixed near the turnstiles and security gates, lacking necessary flexibility in placement.

[0003] The elevator system proposed in Chinese patent document CN103145008B includes a destination floor input device located at the starting floor before boarding the elevator, allowing passengers to input their destination floor information. The system uses an ID card or information terminal device carried by the passenger to store information. After the destination floor is input, the system reads the information from the ID card or information terminal device and registers the entered destination floor's identification section. Based on the registered destination floor, a group management control system determines which elevator to assign to that floor. A first display device displays the elevator assigned by the group management control system. However, in this system, the elevator assignment display is limited to the destination floor input device, thus also suffering from the drawback of insufficient flexibility in display location. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide an elevator system in which passengers can know the corresponding elevator sign before arriving at the elevator hall, so as to smoothly reach the corresponding elevator and complete the elevator ride without passengers having to do anything.

[0005] To solve the above-mentioned technical problems, the present invention provides an elevator system, which includes a detection device, a call signal generation module, a display control device, an elevator group management system, and a first display device.

[0006] There must be at least one path between the building entrance where the elevator is located and the elevator lobby on the floor where the building entrance is located, allowing passengers to travel between the building entrance and the elevator lobby on the floor where the building entrance is located;

[0007] The detection device is used to detect elevator passengers entering the building and send elevator passenger information to the elevator call signal generation module;

[0008] The elevator call signal generation module is used to generate an elevator call signal based on the elevator passenger information and send it to the elevator group management system.

[0009] The elevator group management system assigns a responding elevator identifier based on the elevator call signal and sends it to the display control device.

[0010] The display control device controls the first display device to display the responsive elevator icon;

[0011] The first installation position where the detection device is located and the second installation position where the first display device is located simultaneously satisfy the following:

[0012] Condition 1: During the process of a passenger moving from the building entrance to the elevator hall along the path at a set maximum passenger movement speed, the first movement time within the detection range of the detection device is not less than the shortest detection time required for the detection device to detect an elevator passenger entering its detection range.

[0013] Condition 2: After a passenger is detected by the detection device, the passenger continues to move along the path toward the elevator hall at a set maximum passenger moving speed. The time that the elevator passenger moves in the section of the path where he can see the content displayed by the first display device is not less than the preset minimum viewing time.

[0014] Condition 3: The projection of the first display device on the floor where the building entrance is located is located between the building entrance and the elevator hall on the same floor.

[0015] Preferably, the number of paths is 1;

[0016] The first installation position ensures that condition 1 is met by ensuring that the path length within the detection range of the detection device during the passenger's movement from the building entrance to the elevator hall along the path is not less than a first threshold, wherein the first threshold is not less than the product of the set maximum passenger movement speed and the shortest detection time.

[0017] Preferably, the second installation position ensures that condition 2 is met by ensuring that the path length between the first position and the second position is not less than a second threshold. The first position is the position where the passenger is first detected by the detection device as they enter from the building entrance and move toward the elevator hall, or the first point within the detection range of the detection device along the path from the building entrance to the elevator hall. The second position is a point along the path from the building entrance to the elevator hall where the displayed content of the first display device can be viewed, and the distance between the first position and the first position is equal to the product of the set maximum passenger movement speed and the shortest viewing time. The second threshold is not less than the product of the set maximum passenger movement speed and the shortest viewing time.

[0018] Preferably, there is only one shortest distance point from the second installation location or the projection of the second installation location onto the ground of the floor where the building entrance is located to the path;

[0019] The shortest distance point is the point in the path that has the smallest projected distance between the first location and the elevator hall and the second installation location or the second installation location on the floor where the building entrance is located.

[0020] The second installation position ensures that the path length between the first position and the second position is not less than the second threshold by making the path length between the first position and the shortest distance point greater than the third threshold.

[0021] Preferably, the second distance between the second installation position and the shortest distance point is less than the third threshold.

[0022] Preferably, the second installation location defines a specific road segment as a road segment where the content displayed by the first display device can be viewed. The specific road segment refers to a segment where any point satisfies any of the following conditions:

[0023] Condition 1: With any point as the endpoint, draw a ray from any point to the shortest distance point, take this ray as the initial side of the angle, and take the direction of movement when the passenger is at any point along the path to the end of the elevator hall as the final side. The angle γ obtained is <90°.

[0024] Condition 2: During the passenger's movement from the first position to the end point of the elevator hall, the straight-line distance between the point passed at a previous time and the second installation position is greater than the straight-line distance between the point passed at a later time and the shortest distance point.

[0025] Preferably, the total path length of the specific road segment exceeds a fourth threshold, which is less than the straight-line distance from the first position of the path to the end point of the elevator hall of the path.

[0026] Preferably, the shortest distance point is adjacent to the specific road segment.

[0027] Preferably, the distance between the first point and the second point is not less than a fifth threshold, where the first point is the first point belonging to the specific road segment that the passenger passes through during the process of moving along a path from the first position to the end of the elevator hall, and the second point is a point that satisfies the following conditions:

[0028] Condition A: Located between the first point and the shortest distance point;

[0029] Condition B: It belongs to the specific road segment;

[0030] Condition C: An angle θ obtained by taking the second installation position as the vertex and the shortest distance point along the path and the second point as the starting and ending sides is equal to a preset value.

[0031] Preferably, the number of paths is greater than or equal to 2;

[0032] First, for each path, determine the first installation location and the second installation location;

[0033] Then, the intersection of the obtained first and second installation positions is taken, and the intersection is used as the final first and second installation positions for each path.

[0034] Preferably, the straight line on which the display screen of the first display device is projected onto the ground is perpendicular to the tangent line of the specific road segment at the point of shortest distance.

[0035] Preferably, the line on which the projection of the display screen of the first display device onto the ground lies is perpendicular to the bisector of angle β;

[0036] The angle β is the maximum angle formed by taking the shortest distance point as the vertex and taking any two points passing through the specific road segment as sides.

[0037] Preferably, at least one specific segment of the path satisfies the following condition:

[0038] Condition a: The length exceeds the fourth threshold;

[0039] Condition b: The angle η between any two points in a specific road segment and the shortest distance point is less than 45°;

[0040] Then, the straight line on which the projection of the display screen of the first display device on the ground is parallel to or coincides with the straight line obtained by fitting the points in the specific road segment, or parallel to or coincides with the straight line obtained by connecting the first and last points of the specific road segment.

[0041] Preferably, the display control device controls the first display device such that the first display device displays the responsive elevator icon during part or all of the process of an elevator passenger moving from the first position on a path to the shortest distance point.

[0042] The first display device shows that the length of a specific segment corresponding to the elevator icon is greater than a sixth threshold.

[0043] Preferably, the display control device controls the first display device to continuously display the passenger's elevator response indicator while the passenger is at a first position on a path and during the period from the shortest distance point, and to stop displaying the passenger's elevator response indicator after the passenger has passed the shortest distance point; or,

[0044] The display control device controls the first display device to continuously display the response elevator icon while the passenger is at a first position on a path and between the second point, and to stop displaying the passenger's response elevator icon after the passenger passes the second point.

[0045] Preferably, the display area of ​​the first display device includes a first display area and a second display area;

[0046] The first area is used to display the elevator response identifiers of elevator passengers whose time interval from the moment the response elevator identifier is received to the current moment does not exceed a given time.

[0047] The second display area is used to display the elevator response identifiers of elevator passengers whose time interval from the moment the response elevator identifier is received to the current moment exceeds a given time and who have not yet crossed the shortest distance point or the second point.

[0048] Preferably, the elevator system further includes a second display device;

[0049] The second display device is located in the elevator lobby and is used to display the corresponding elevator sign to waiting passengers.

[0050] Preferably, the display control device controls the second display device to start displaying the elevator identifier of the elevator passenger when the path length between the passenger and the shortest distance point is a preset value.

[0051] Preferably, the elevator system also includes a destination floor registration device for passengers to register their elevator call signals.

[0052] The elevator system of this invention has a first display device located between the building entrance and the elevator lobby on the floor where the entrance is located. The detection device is positioned such that all passengers entering the building can be detected, meaning the detection range covers the building entrance. The detection device detects the passenger's destination floor and sends this information to a call signal generation module. This module generates a call signal based on the passenger information and sends it to the elevator group management system. The system then assigns a response elevator identifier and sends it to the display control device. The display control device controls the first display device to show the response elevator identifier (and the passenger's destination floor). This elevator system automatically registers the passenger's destination floor. After entering the building, passengers move along the path from the entrance to the elevator lobby (usually a wide and roughly straight path). While moving along this path, passengers can see the response elevator identifier (and their destination floor) displayed on the first display device. Passengers can see their destination floor before reaching the elevator lobby, allowing them to smoothly reach their assigned elevator without any manual intervention. Attached Figure Description

[0053] To more clearly illustrate the technical solution of the present invention, the accompanying drawings used in the present invention will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0054] Figure 1 This is a schematic diagram of an embodiment of the elevator system of the present invention. Detailed Implementation

[0055] The technical solutions of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0056] Example 1

[0057] like Figure 1 As shown, an elevator system includes a detection device, a call signal generation module, a display control device, an elevator group management system, and a first display device.

[0058] There must be at least one path between the building entrance where the elevator is located and the elevator lobby on the floor where the building entrance is located, allowing passengers to travel between the building entrance and the elevator lobby on the floor where the building entrance is located;

[0059] The detection device is used to detect elevator passengers entering the building and send elevator passenger information to the elevator call signal generation module;

[0060] The elevator call signal generation module is used to generate an elevator call signal based on the elevator passenger information and send it to the elevator group management system.

[0061] The elevator group management system assigns a responding elevator identifier based on the elevator call signal and sends it to the display control device.

[0062] The display control device controls the first display device to display the responsive elevator icon;

[0063] The first installation position where the detection device is located and the second installation position where the first display device is located simultaneously satisfy the following:

[0064] Condition 1: During the process of a passenger moving from the building entrance to the elevator hall along the path at a set maximum passenger movement speed, the first movement time within the detection range of the detection device is not less than the shortest detection time required for the detection device to detect an elevator passenger entering its detection range.

[0065] Condition 2: After a passenger is detected by the detection device, the passenger continues to move along the path toward the elevator hall at a set maximum passenger moving speed. The time that the elevator passenger moves in the section of the path where he can see the content displayed by the first display device is not less than the preset minimum viewing time.

[0066] Condition 3: The projection of the first display device on the floor where the building entrance is located is located between the building entrance and the elevator hall on the same floor.

[0067] Preferably, elevator passenger information includes the passenger's destination floor;

[0068] The elevator call signal includes the passenger's destination floor information;

[0069] The elevator group management system assigns a response elevator identifier and the passenger's destination floor according to the elevator call signal and sends them to the display control device.

[0070] The display control device controls the first display device to display the response elevator icon and the passenger's destination floor.

[0071] Preferably, in condition 2, during the process of a passenger continuing to move along the path toward the elevator hall at a set maximum passenger moving speed after being detected by the detection device, the moving time of an elevator passenger of a set height (e.g., 165mm) in a section of the path where they can view the display content of the first display device from a set viewing angle (e.g., a central angle of 180°) is not less than a preset minimum viewing time.

[0072] There are no restrictions on the specific implementation of the detection device; any non-mobile device capable of obtaining passenger destination information is acceptable, such as:

[0073] 1) The camera device and the post-processing image device obtain the passenger's identity information through image recognition and other processing, and then determine the passenger's destination layer based on historical data or pre-registered and saved passenger identity-destination layer information;

[0074] 2) The data collection device collects biometric features such as iris and fingerprints, or information such as cards, QR codes, and passenger mobile terminal IDs. Based on the collected information, the passenger's identity information is determined, and then, as in 1), the passenger's destination layer is determined using the identity information.

[0075] 3) Directly receive passenger destination information input from passengers using mobile phones, mobile terminals, etc.

[0076] 4) In order to deal with the special scenario in the early stage of elevator installation and use where there is insufficient historical elevator data or image recognition failure and the destination floor information cannot be determined, a destination floor registration device is also installed in the waiting hall for passengers to register their destination floor information.

[0077] In the elevator system of Embodiment 1, the first display device is located between the building entrance and the elevator lobby on the floor where the building entrance is located; the detection device is positioned such that all passengers entering the building entrance can be detected, i.e., the detection range of the detection device covers the building entrance; the first display device is located between the building entrance and the elevator lobby on the floor where the building entrance is located; the detection device detects elevator passengers entering the building, obtains the passenger's destination floor, and sends the elevator passenger information to the elevator call signal generation module. The elevator call signal generation module generates an elevator call signal based on the elevator passenger information and sends it to the elevator group management system. The elevator group management system allocates a responding elevator identifier based on the elevator call signal and sends it to the display control device. The display control device controls the first display device to display the responding elevator identifier (and the passenger's destination floor). This elevator system can automatically register passengers' destination floors. After entering the building, passengers move towards the elevator hall along the path from the building entrance (which is usually wide and roughly straight). During this process, passengers can see the corresponding elevator sign (and their destination floor) displayed on the first display device. Passengers can know their corresponding elevator sign (and their destination floor) before arriving at the elevator hall, thus enabling them to smoothly reach their corresponding elevator without any operation required.

[0078] Example 2

[0079] In the elevator system based on Embodiment 1, the number of paths is 1;

[0080] The first installation position ensures that condition 1 is met by ensuring that the path length within the detection range of the detection device during the passenger's movement from the building entrance to the elevator hall along the path is not less than a first threshold, wherein the first threshold is not less than the product of the set maximum passenger movement speed and the shortest detection time.

[0081] In the elevator system of Embodiment 2, a first threshold ensures that the time a passenger spends moving within the path covered by the detection range of the detection device is sufficient for the detection device to complete the detection of the passenger.

[0082] Example 3

[0083] Based on the elevator system of Embodiment 1 or 2, the second installation position ensures that condition 2 is met by making the path length between the first position and the second position not less than a second threshold.

[0084] The first position is the position when the passenger is first detected by the detection device as he enters the building from the entrance and moves toward the elevator hall, or the first point within the detection range of the detection device along the path from the building entrance to the elevator hall.

[0085] The second position is a point on a path along the direction from the building entrance to the elevator hall where the display content of the first display device can be viewed, and the distance between the second position and the first position is equal to the product of the set maximum passenger movement speed and the shortest viewing time. The second threshold is not less than the product of the set maximum passenger movement speed and the shortest viewing time.

[0086] To ensure that passengers can see the content displayed on the first display device, the distance between the first position and the second position cannot be too short, that is, the distance between the two cannot be less than the distance threshold.

[0087] Example 4

[0088] Based on the elevator system of Embodiment 3, there is only one shortest distance point from the second installation position or the projection of the second installation position on the ground of the floor where the building entrance is located to the path;

[0089] The shortest distance point is the point in the path that has the smallest projected distance between the first location and the elevator hall and the second installation location or the second installation location on the floor where the building entrance is located.

[0090] The second installation position ensures that the path length between the first position and the second position is not less than the second threshold by making the path length between the first position and the shortest distance point greater than the third threshold.

[0091] Preferably, the second distance between the second installation position and the shortest distance point is less than the third threshold.

[0092] In the elevator system of Embodiment 4, a first display device is installed near the path. Different lines are formed by connecting various points along the path to the first display device. The shortest distance among these lines is taken as the distance between the first display device and the path. A passenger moves from a first position along the path towards the elevator hall. When the passenger is in a second position, the angle θ between the line connecting the passenger's eye and the first display device at the second installation position and the plane containing the line connecting the second installation position and the shortest distance point is greater than an angle threshold (as the passenger continues moving, the angle θ decreases until it reaches zero; further movement allows the passenger to cross this plane). The angle threshold refers to the minimum angle at which the passenger can see the content displayed on the first display device (if the angle is smaller, it becomes invisible or difficult to see). Clearly, the passenger can consistently see the content displayed on the first display device from the second position.

[0093] Example 5

[0094] Based on the elevator system of Embodiment 4, the second installation position defines a specific section as a section where the content displayed by the first display device can be viewed. The specific section refers to a section where any point satisfies any of the following conditions:

[0095] Condition 1: With any point as the endpoint, draw a ray from any point to the shortest distance point, take this ray as the initial side of the angle, and take the direction of movement when the passenger is at any point along the path to the end of the elevator hall as the final side. The angle γ obtained is <90°.

[0096] Condition 2: During the passenger's movement from the first position to the end point of the elevator hall, the straight-line distance between the point passed at a previous time and the second installation position is greater than the straight-line distance between the point passed at a later time and the shortest distance point.

[0097] Preferably, the total path length of the specific road segment exceeds a fourth threshold, which is less than the straight-line distance from the first position of the path to the end point of the elevator hall of the path.

[0098] Preferably, the shortest distance point is adjacent to the specific road segment. More preferably, the straight line on which the projection of the display screen of the first display device onto the ground lies is perpendicular to the tangent of the specific road segment at the shortest distance point.

[0099] Preferably, the distance between the first point and the second point is not less than a fifth threshold, where the first point is the first point belonging to the specific road segment that the passenger passes through during the process of moving along a path from the first position to the end of the elevator hall, and the second point is a point that satisfies the following conditions:

[0100] Condition A: Located between the first point and the shortest distance point;

[0101] Condition B: It belongs to the specific road segment;

[0102] Condition C: An angle θ obtained by taking the second installation position as the vertex and the shortest distance point along the path and the second point as the starting and ending sides is equal to a preset value.

[0103] Preferably, the line on which the projection of the display screen of the first display device onto the ground lies is perpendicular to the bisector of angle β;

[0104] The angle β is the maximum angle formed by taking the shortest distance point as the vertex and taking any two points passing through the specific road segment as sides.

[0105] Preferably, at least one specific segment of the path satisfies the following condition:

[0106] Condition a: The length exceeds the fourth threshold;

[0107] Condition b: The angle η between any two points in a specific road segment and the shortest distance point is less than 45°;

[0108] Then, the straight line on which the projection of the display screen of the first display device on the ground is parallel to or coincides with the straight line obtained by fitting the points in the specific road segment, or parallel to or coincides with the straight line obtained by connecting the first and last points of the specific road segment.

[0109] Example 6

[0110] Based on the elevator systems of Embodiments 2 to 5, the number of paths is greater than or equal to 2;

[0111] First, for each path, determine the first installation location and the second installation location;

[0112] Then, the intersection of the obtained first and second installation positions is taken, and the intersection is used as the final first and second installation positions for each path.

[0113] Example 7

[0114] Based on the elevator system of Embodiment 5, the display control device controls the first display device so that the first display device displays the responsive elevator identifier during part or all of the process of an elevator passenger moving from the first position on a path to the shortest distance point.

[0115] The length of a specific segment corresponding to the elevator identifier displayed by the first display device is greater than a sixth threshold.

[0116] Preferably, the display control device controls the first display device to continuously display the passenger's response elevator icon while the passenger is at a first position on a path and the shortest distance point, and to stop displaying the passenger's response elevator icon after the passenger passes the shortest distance point.

[0117] Preferably, the display control device controls the first display device to continuously display the responsive elevator icon while the passenger is at a first position on a path and between the second point, and to stop displaying the passenger's responsive elevator icon after the passenger passes the second point.

[0118] In the elevator system of Embodiment 7, the first display device displays the responding elevator icon during part or all of the process of an elevator passenger moving from the first position on a path to the shortest distance point or the second point, and stops displaying the responding elevator icon for that passenger when the passenger moves and crosses the shortest distance point or the second point.

[0119] Example 8

[0120] Based on the elevator system of Embodiment 7, the display area of ​​the first display device includes a first display area and a second display area;

[0121] The first area is used to display the elevator response identifiers of elevator passengers whose time interval from the moment the response elevator identifier is received to the current moment does not exceed a given time.

[0122] The second display area is used to display the elevator response identifiers of elevator passengers whose time interval from the moment the response elevator identifier is received to the current moment exceeds a given time and who have not yet crossed the shortest distance point or the second point.

[0123] Example 9

[0124] Based on the elevator system of Embodiment Seven, the elevator system further includes a second display device;

[0125] The second display device is located in the elevator lobby and is used to display the corresponding elevator sign to waiting passengers.

[0126] Preferably, the display control device controls the second display device to start displaying the elevator identifier of the elevator passenger when the path length between the passenger and the shortest distance point is a preset value.

[0127] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. An elevator system, characterized in that It includes a detection device, a call signal generation module, a display control device, an elevator group management system, and a first display device; There must be at least one path between the building entrance where the elevator is located and the elevator lobby on the floor where the building entrance is located, allowing passengers to travel between the building entrance and the elevator lobby on the floor where the building entrance is located; The detection device is used to detect elevator passengers entering the building and send elevator passenger information to the elevator call signal generation module; The elevator call signal generation module is used to generate an elevator call signal based on the elevator passenger information and send it to the elevator group management system. The elevator group management system assigns a responding elevator identifier based on the elevator call signal and sends it to the display control device. The display control device controls the first display device to display the responsive elevator icon; The first installation position where the detection device is located and the second installation position where the first display device is located simultaneously satisfy the following: Condition 1: During the process of a passenger moving from the building entrance to the elevator hall along the path at a set maximum passenger movement speed, the first movement time within the detection range of the detection device is not less than the shortest detection time required for the detection device to detect an elevator passenger entering its detection range. Condition 2: After a passenger is detected by the detection device, the passenger continues to move along the path toward the elevator hall at a set maximum passenger moving speed. The time that the elevator passenger moves in the section of the path where he can see the content displayed by the first display device is not less than the preset minimum viewing time. Condition 3: The projection of the first display device on the floor where the building entrance is located is located between the building entrance and the elevator hall on the same floor.

2. The elevator system according to claim 1, characterized in that, The number of paths is 1; The first installation position ensures that condition 1 is met by ensuring that the path length within the detection range of the detection device during the passenger's movement from the building entrance to the elevator hall along the path is not less than a first threshold, wherein the first threshold is not less than the product of the set maximum passenger movement speed and the shortest detection time.

3. The elevator system according to claim 2, characterized in that, The second installation position ensures that condition 2 is met by ensuring that the path length between the first position and the second position is not less than a second threshold. The first position is the position where the passenger is first detected by the detection device as they enter from the building entrance and move toward the elevator hall, or the first point within the detection range of the detection device along the path from the building entrance to the elevator hall. The second position is a point along the path from the building entrance to the elevator hall where the displayed content of the first display device can be viewed, and the distance between the first position and the first position is equal to the product of the set maximum passenger movement speed and the shortest viewing time. The second threshold is not less than the product of the set maximum passenger movement speed and the shortest viewing time.

4. The elevator system according to claim 3, characterized in that, There is only one shortest distance point from the second installation location or the projection of the second installation location onto the ground of the floor where the building entrance is located to the path; The shortest distance point is the point in the path that has the smallest projected distance between the first location and the elevator hall and the second installation location or the second installation location on the floor where the building entrance is located. The second installation position ensures that the path length between the first position and the second position is not less than the second threshold by making the path length between the first position and the shortest distance point greater than the third threshold.

5. The elevator system according to claim 4, characterized in that, The second distance between the second installation position and the shortest distance point is less than the third threshold.

6. The elevator system according to claim 4, characterized in that, The second installation location defines a specific road segment as a segment where the content displayed by the first display device can be viewed. The specific road segment refers to a segment where any point satisfies any of the following conditions: Condition 1: With any point as the endpoint, draw a ray from any point to the shortest distance point, take this ray as the initial side of the angle, and take the direction of movement when the passenger is at any point along the path to the end of the elevator hall as the final side. The angle γ obtained is <90°. Condition 2: During the passenger's movement from the first position to the end point of the elevator hall, the straight-line distance between the point passed at a previous time and the second installation position is greater than the straight-line distance between the point passed at a later time and the shortest distance point.

7. The elevator system according to claim 6, characterized in that, The total path length of the specific road segment exceeds a fourth threshold, which is less than the straight-line distance from the first location of the path to the end point of the elevator hall of the path.

8. The elevator system according to claim 6, characterized in that, The shortest distance point is adjacent to the specific road segment.

9. The elevator system according to claim 7, characterized in that, The distance between the first point and the second point is not less than the fifth threshold. The first point is the first point belonging to the specific road segment that the passenger passes through while moving along a path from the first position to the end of the elevator hall. The second point is a point that satisfies the following conditions: Condition A: Located between the first point and the shortest distance point; Condition B: It belongs to the specific road segment; Condition C: An angle θ obtained by taking the second installation position as the vertex and the shortest distance point along the path and the second point as the starting and ending sides is equal to a preset value.

10. The elevator system according to any one of claims 2 to 9, characterized in that, The number of paths is greater than or equal to 2; First, for each path, determine the first installation location and the second installation location; Then, the intersection of the obtained first and second installation positions is taken, and the intersection is used as the final first and second installation positions for each path.

11. The elevator system according to claim 8, characterized in that, The projection of the display screen of the first display device onto the ground is perpendicular to the tangent line of the specific road segment at the point of shortest distance.

12. The elevator system according to claim 6, characterized in that, The line on which the projection of the display screen of the first display device onto the ground lies is perpendicular to the bisector of angle β; The angle β is the maximum angle formed by taking the shortest distance point as the vertex and taking any two points passing through the specific road segment as sides.

13. The elevator system according to claim 6, characterized in that, At least one specific segment of the path satisfies the following condition: Condition a: The length exceeds the fourth threshold; Condition b: The angle η between any two points in a specific road segment and the shortest distance point is less than 45°; Then, the straight line on which the projection of the display screen of the first display device on the ground is parallel to or coincides with the straight line obtained by fitting the points in the specific road segment, or parallel to or coincides with the straight line obtained by connecting the first and last points of the specific road segment.

14. The elevator system according to claim 9, characterized in that, The display control device controls the first display device to display the responsive elevator icon during part or all of the process in which an elevator passenger moves from the first position on a path to the shortest distance point. The first display device shows that the length of a specific segment corresponding to the elevator icon is greater than a sixth threshold.

15. The elevator system according to claim 14, characterized in that, The display control device controls the first display device to continuously display the passenger's response elevator icon while the passenger is at a first position on a path and the shortest distance point, and to stop displaying the passenger's response elevator icon after the passenger passes the shortest distance point; or, The display control device controls the first display device to continuously display the response elevator icon while the passenger is at a first position on a path and between the second point, and to stop displaying the passenger's response elevator icon after the passenger passes the second point.

16. The elevator system according to claim 15, characterized in that, The display area of ​​the first display device includes a first display area and a second display area; The first display area is used to display the elevator response identifiers of elevator passengers whose time interval from the moment the response elevator identifier is received to the current moment does not exceed a given time. The second display area is used to display the elevator response identifiers of elevator passengers whose time interval from the moment the response elevator identifier is received to the current moment exceeds a given time and who have not yet crossed the shortest distance point or the second point.

17. The elevator system according to claim 4, characterized in that, The elevator system also includes a second display device; The second display device is located in the elevator lobby and is used to display the corresponding elevator sign to waiting passengers.

18. The elevator system according to claim 17, characterized in that, The display control device controls the second display device to start displaying the elevator identifier of the elevator passenger when the path length between the passenger and the shortest distance point is a preset value.

19. The elevator system according to claim 1, characterized in that, The elevator system also includes a destination floor registration device for passengers to register their call signals.

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