JP2018030676A - Elevator control system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an elevator control system capable of accurately detecting a passenger in the vicinity of a door of an elevator irrespective of the door and floor materials of the elevator.SOLUTION: An elevator control system related to one embodiment, comprises: a camera capable of imaging an elevator hall including the vicinity of a car door; detection means for comparing a plurality of images imaged from timing when a door opening/closing state of the car door becomes a fully closed state to timing when it becomes a fully opened state out of a plurality of images imaged by the camera for each block unit and detecting a user motion; and notification means for notifying the user of a message urging the user to leave the door when the user motion is detected by the detection means in an attention calling area where there is the possibility that the user catches a part of a body in the door.SELECTED DRAWING: Figure 1

Description

  Embodiments described herein relate generally to an elevator control system.

  In general, an elevator is provided with various devices and functions for ensuring safety. For example, an elevator is provided with a device and a function for preventing a hand or arm from being drawn into the door of the elevator.

  There is a system using a reflection type infrared sensor as a device or function system for preventing a hand or arm from being drawn into an elevator door. In this method, infrared rays are emitted from an infrared sensor, and passengers near the elevator door are detected based on the amount of change in the reflected light. However, in this method, depending on the material of the elevator door or floor, there is a possibility that the irradiated infrared rays may be irregularly reflected. Therefore, the method cannot be applied depending on the material of the door or floor. .

  Another method is to install a projector and a receiver so that they face each other across the elevator door, and based on whether the receiver can receive the light emitted from the projector, passengers near the elevator door There is a method to detect. However, in this method, the receiver may not be able to receive the light from the projector normally due to dirt on the floor, etc., and it is falsely detected that there is no passenger near the door even though there is no passenger near the door. There is an inconvenience.

Japanese Patent No. 5568391 Japanese Patent No. 5554236

  The problem to be solved by the present invention is to provide an elevator control system capable of accurately detecting passengers in the vicinity of an elevator door regardless of the elevator door or floor material.

  An elevator control system according to an embodiment includes a camera capable of photographing a landing including the vicinity of a door of a car, and a door opening / closing state of the door of the car among a plurality of images photographed by the camera. Detecting means for detecting the movement of the user by comparing a plurality of images taken in a block unit from the state to the fully open state, and a part of the user's body is drawn into the door And a notification means for notifying a message for prompting the user to move away from the door when the detection means detects the movement of the user within a fearful warning area.

FIG. 1 is a diagram illustrating a schematic configuration example of an elevator control system according to an embodiment. FIG. 2 is a diagram illustrating a state in which the captured images according to the embodiment are divided in units of blocks. FIG. 3 is a view for explaining a motion detection area when the car door according to the embodiment is in a fully open state. FIG. 4 is a view for explaining a motion detection area when the car door according to the embodiment is in a fully closed state. FIG. 5 is a diagram for explaining a motion detection area having a shape different from the motion detection area shown in FIG. FIG. 6 is a diagram for supplementarily explaining the motion detection area shown in FIG. FIG. 7 is a diagram for explaining a motion detection area having a shape different from the motion detection area shown in FIG. FIG. 8 is a diagram for explaining a motion detection area having a shape different from the motion detection area shown in FIG. FIG. 9 is a diagram for explaining a coordinate system in the real space according to the embodiment. FIG. 10 is a flowchart showing an example of the operation of the elevator control system according to the embodiment. FIG. 11 is a flowchart showing a procedure of motion detection processing according to the embodiment. FIG. 12 is a flowchart showing a procedure of position estimation processing according to the embodiment. FIG. 13 is a flowchart showing an example of another operation of the elevator control system according to the embodiment. FIG. 14 is a diagram for explaining a motion detection area when the car door opening / closing method differs according to the car according to the embodiment.

Hereinafter, embodiments will be described with reference to the drawings.
FIG. 1 shows a schematic configuration example of an elevator control system according to an embodiment. Note that, here, a single car will be described as an example, but a plurality of cars have the same configuration.

  In the elevator control system shown in FIG. 1, a camera 12 is installed above the entrance / exit of a car 11. Specifically, the camera 12 is installed in a curtain plate 11 a covering the upper part of the entrance / exit of the car 11 with the lens portion facing the landing 15. The camera 12 is a small surveillance camera such as an in-vehicle camera, and has a wide-angle lens (specifically, a wide-angle lens with an angle of view of 60 ° to 130 °), and several frames per second (for example, 30). Frames / second) can be taken continuously.

  The camera 12 is activated when the moving speed of the car 11 is less than a predetermined value. Specifically, the camera 12 starts to decelerate in order for the car 11 to stop on a predetermined floor (a landing call registration floor or a car call registration floor), and starts moving when the moving speed becomes less than a predetermined value. . In other words, the photographing by the camera 12 includes the time when the car 11 stops on the predetermined floor after the car 11 starts decelerating and the moving speed becomes less than the predetermined value because the car 11 stops on the predetermined floor. The car 11 starts accelerating in order to move from the predetermined floor to another floor, and continues until the moving speed reaches a predetermined value or more.

  The shooting range of the camera 12 is set to L1 + L2 (L1 >> L2). L <b> 1 is a shooting range on the landing 15 side and is, for example, 3 m from the car door 13 toward the landing 15. L1 is a photographing range on the car 11 side, and is, for example, 50 cm from the car door 13 toward the back of the car. L1 and L2 are ranges in the depth direction, and the range in the width direction (the direction orthogonal to the depth direction) is at least larger than the lateral width of the car 11.

  In the hall 15 on each floor, a hall door 14 is installed at the arrival entrance of the car 11 so as to be freely opened and closed. The landing door 14 opens and closes by engaging with the car door 13 when the car 11 arrives. The power source (door motor) is on the car 11 side, and the landing door 14 simply opens and closes following the car door 13. In the following description, it is assumed that when the car door 13 is opened, the landing door 14 is also opened, and when the car door 13 is closed, the landing door 14 is also closed.

  At the bottom of the car 11, a load detector 16 for detecting the load in the car room is installed. Load information indicating the loaded load detected by the load detector 16 is transmitted to an elevator control device 30 described later. In the car 11, a speaker 17 is provided for announcing (notifying) various messages to the user (passenger).

  Each image (video) continuously captured by the camera 12 is preprocessed by the image preprocessing device 21 in the image analysis device 20 and then analyzed in real time by the image processing device 22 in the image analysis device 20. It is processed. In FIG. 1, for convenience, the image analysis device 20 is shown taken out from the car 11, but in reality, the image analysis device 20 is housed in the curtain plate 11 a together with the camera 12.

  The image preprocessing device 20 includes a resolution reduction processing unit 23. The resolution reduction processing unit 23 reduces the resolution of each image (captured image) captured by the camera 12 and generates a low-resolution image. The generated low resolution image is sent to the image processing device 22. As a method for reducing the resolution of the captured image, for example, there is a method of thinning out pixels constituting the captured image. However, the method of reducing the resolution of the captured image is not limited to this, and the resolution of the captured image may be decreased by any known method.

  By reducing the image resolution in this way, the image size (image capacity) can be reduced, and the analysis processing in the image processing device 22 can be executed at high speed (in real time).

  The image processing device 22 includes a storage unit 24 and a user detection unit 25. The storage unit 24 sequentially stores low-resolution images sent from the image preprocessing device 21 and has a buffer area for temporarily holding data necessary for processing by the user detection unit 25. .

  The user detection unit 25 detects the presence or absence of a user by paying attention to the movement of the person / thing closest to the car door 13 in the low-resolution image sent from the image preprocessing device 21. If this user detection part 25 is divided functionally, it will be divided into the motion detection part 25a and the position estimation part 25b. Hereinafter, the motion detection unit 25a and the position estimation unit 25b will be described with reference to FIG.

As shown in FIG. 2, the motion detection unit 25a divides the low-resolution image into blocks of one side W _block , compares the luminance of the low-resolution image in units of blocks, and has a luminance difference equal to or greater than a preset value. Detects the movement of a person / thing by detecting a block with movement. The “movement of a person / thing” here refers to the movement of a moving object such as a person or a wheelchair. It is assumed that the number of pixels included in one block shown in FIG. 2 is constant. That is, the side W _block of the _block becomes longer as the image has a lower resolution, and the side W _block of the _block becomes shorter as the image has a higher resolution.

  In the example of FIG. 2, the vertical and horizontal lengths of the blocks are the same, but the vertical and horizontal lengths may be different. Further, the blocks may be made uniform over the entire image, or may be made non-uniform in size, for example, by shortening the length in the vertical direction (Y direction) toward the top of the image. Thus, the foot position estimated later can be obtained with a higher resolution or a uniform resolution in the real space (if it is divided uniformly on the image, the farther away from the car door 13 is, the sparser the resolution is in the real space). .

  In the present embodiment, the movement of a person / thing is detected by paying attention to the luminance of the image. However, the method for detecting the movement of the person / thing is not limited to this. For example, the brightness or saturation of the image is determined. The movement of a person / thing may be detected by using it.

  The position estimation unit 25b extracts the block closest to the car door 13 from the blocks with motion detected by the motion detection unit 25a, and the coordinate position from the center of the car door 13 (center of the door front) in the block. Is estimated as the user's position (foot position). Data on the user's foot position is sent to the elevator control device 30.

  The elevator control device 30 determines the entire elevator based on the driving state of the car 11 (car position, driving direction, door open / closed state, etc.), landing call / car call occurrence status, and load information obtained from the load detector 16. Control.

  In addition, the elevator control device 30 sets a motion detection area in which the motion of the user or the alert target person can be detected according to the door open / close state of the car door 13. Since the motion detection area will be described later, detailed description thereof is omitted here. Further, the elevator control device 30 indicates that the user's hand or arm may be drawn into the car door 13 based on the user's foot position data sent from the position estimation unit 25b. Is output to the car control device 40. The elevator control device 30 outputs various instruction signals to the car control device 40 in addition to the above-described instruction signals.

  The car control device 40 includes a door opening / closing control unit 41, and the door opening / closing control unit 41 opens and closes the car door 13 when the car 11 arrives at the landing 15 according to an instruction from the elevator control device 30. Control. In addition, the car control device 40 performs display control of an in-car indicator (not shown) installed in the car 11 and control of the speaker 17 in accordance with an instruction from the elevator control device 30.

Next, details of the motion detection area will be described with reference to FIGS. 3 and 4.
FIG. 3 is a diagram for explaining a motion detection area when the car door 13 is fully opened, and FIG. 4 is a diagram for explaining a motion detection area when the car door 13 is fully closed. . As shown in FIG. 3, when the car door 13 is fully opened, the motion detection area E1 is set on the landing 15 side. In this case, the motion detection area E1 is set to have a distance L3 from the center of the car door 13 toward the landing (L3 ≦ shooting range L1 on the landing 15 side). In this case, the lateral width of the motion detection area E1 is set to a distance equal to or larger than the lateral width W1 of the car door 13.

  On the other hand, as shown in FIG. 4, when the car door 13 is in the fully closed state, the motion detection area E1 is set on the car 11 side. The motion detection area E1 when the car door 13 is in the fully closed state may be referred to as “attention area”. In this case, the motion detection area E1 includes a motion detection area E1a set on the floor near the car door 13 and a motion detection area E1b set on two doorway columns installed on both sides of the car door 13. Including.

  The motion detection area E1a is set on the floor adjacent to the door pocket in which the car door 13 is housed, and is a distance L4 from the center of the car door 13 toward the car (L4 ≦ shooting range L2 on the car 11 side). Is set to have. Further, the lateral width of the motion detection area E1a is set to be approximately the same distance as the lateral width W1 of the car door 13. If the width of the motion detection area E1a is excessively widened, the motion detection area E1a is included in the motion detection area E1a, and even the motion of the person who is operating the operation panel is a target for attention. This is because it may be detected as a person.

  The motion detection area E1b is set to two entrance / exit columns installed adjacent to the door pocket in which the car door 13 is accommodated, and is set to include at least a part of the boundary portion between each entrance / exit column and the door pocket. More specifically, it is set so as to include at least a boundary portion from the floor surface to a predetermined height (for example, 1 m) among the boundary portions between the doorway columns and the door pocket. The predetermined height is determined based on, for example, the average height of the elevator user, and is set to a height at which the user's hand or arm is estimated to be located.

  Thus, the motion detection area E1 is set on the landing 15 side when the car door 13 is fully opened, and is set on the car 11 side when the car door 13 is fully closed. That is, the motion detection area E1 is set on the landing 15 side until the car door 13 changes from the fully open state to the fully closed state, and is set on the car 11 side until the car door 13 changes from the fully closed state to the fully open state. The

  In addition, in FIG. 4, although the shape of the motion detection area E1a was a rectangle and illustrated the case where it has the distance of L4 toward the car direction from the center of the car door 13, it is not limited to this. The motion detection area E1a may have another shape.

  For example, FIG. 5 illustrates a case where the distance from the center of the car door 13 toward the car direction is shorter (L5 ≦ L4) than the motion detection area E1a shown in FIG. In this case, as compared with the motion detection area E1a shown in FIG. 4, the range in which the attention target person can be detected is narrow, but the following advantages can be obtained.

  The range (E1a ′ in FIG. 6) of the difference between the motion detection area E1a shown in FIG. 4 and the motion detection area E1a shown in FIG. 5 is a range provided to improve safety, and within this range E1a ′ Even if a user's movement is detected, the user's hand or arm is unlikely to be drawn. For this reason, as shown in FIG. 5, by narrowing the motion detection area E1a to a range that can ensure the minimum safety, a large number of users are in the car 11 (the car 11 is congested). In this case, useless detection that can occur in the range E1a ′ in FIG. 6 can be reduced.

  FIG. 7 illustrates a case where the shape is not a rectangle like the motion detection area E1a shown in FIG. 4 but has a curved shape and is set on the floor surface around two entrance / exit columns. In addition, in FIG. 8, the shape has a curve like the motion detection area E1a shown in FIG. 7, and is set on the floor surface around the two entrance / exit columns, and the motion detection area shown in FIG. The case where the detection range is set wider than E1a is illustrated. In these cases, the following advantages can be obtained as compared with the motion detection area E1a shown in FIG.

  In the case of the motion detection area E1a shown in FIG. 4, when the car door 13 is opened, light enters the car 11 from the landing 15 side, so the luminance of the motion detection area E1a changes, and the change is detected by the user. There is a risk of inconvenience that the movement is erroneously detected. On the other hand, since the motion detection area E1a shown in FIG. 7 is set only on the floor surface around the two entrance columns, even if the car door 13 starts to open, the motion detection area E1a Since no light enters and the luminance of the motion detection area E1a does not change, the above-described inconvenience can be suppressed.

  Similarly, since the motion detection area E1a shown in FIG. 8 has a shape in which the base is widened from the center of the car door 13 toward the two doorway pillars, even if the car door 13 starts to open, motion detection is performed. Since the light on the landing 15 side does not enter the area E1a and the luminance of the motion detection area E1a does not change, the above-described inconvenience can be suppressed.

Next, a coordinate system in real space will be described with reference to FIG. FIG. 9 is a diagram for explaining a coordinate system in real space.
The camera 12 is mounted with the car door 13 provided at the entrance of the car 11 in the horizontal direction with the X axis, and the direction from the center of the car door 13 to the landing 15 (the direction perpendicular to the car door 13) with the Y axis. An image is taken with the height direction of the car 11 as the Z axis. By comparing the motion detection area E1 portion of each image captured by the camera 12 in units of blocks, the direction from the center of the car door 13 to the landing 15 (Y-axis positive direction) or the direction of the car 11 (Y The user's foot position in the negative axis direction) is detected.

  Here, an example of the operation of the elevator control system will be described with reference to the flowchart of FIG. However, here, the car 11 is in the middle of moving to the registration floor of the hall call in response to a predetermined hall call, and the car 11 starts to decelerate to stop at the registration floor. Assuming that That is, it is assumed that the car door 13 of the car 11 is fully closed and the camera 12 is not activated.

  First, the elevator control device 30 determines whether or not the moving speed of the car 11 is less than a predetermined value (step S1). When it is determined that the moving speed of the car 11 is equal to or higher than the predetermined value (NO in step S1), the process in step S1 is executed again.

  On the other hand, when it is determined that the moving speed of the car 11 is less than the predetermined value (YES in step S1), the camera 12 is activated and photographing is started.

  Subsequently, the elevator control device 30 acquires load information indicating the current loaded load of the car 11 from the load detector 16 (step S2). Next, the elevator control device 30 determines the range of the motion detection area E1 based on the loaded load indicated by the acquired load information. Since the car door 13 is in the fully closed state, motion detection is performed on the car 11 side. Area E1 is set (step S3).

  For example, when the loaded load indicated by the load information is greater than or equal to a predetermined value set in advance, the range of the motion detection area E1 is preferably narrow in order to reduce useless detection. Therefore, as shown in FIG. A motion detection area E1 having a narrow motion detection area E1a is set here. On the other hand, when the loaded load indicated by the load information is less than a predetermined value set in advance, there is no problem even if the range of the motion detection area E1 is wide. Therefore, as shown in FIG. A motion detection area E1 having an area E1a is set here.

  The resolution reduction processing unit 23 in the image preprocessing device 21 reduces the resolution of each image continuously captured by the camera 12 and generates a low-resolution image (step S4). Note that the generated low-resolution image is sequentially sent to the image processing device 22.

  Next, when receiving the input of the low resolution image sent from the image preprocessing device 21, the image processing device 22 stores the received low resolution image in the storage unit 24 while sequentially storing the received low resolution image. The detection process is executed in real time (step S5).

  The user detection process is executed by a user detection unit 25 provided in the image processing apparatus 22. This user detection process is divided into a motion detection process (step S5a) and a position estimation process (step S5b).

  Below, a motion detection process is demonstrated with reference to the flowchart of FIG. 11, and a position estimation process is demonstrated with reference to the flowchart of FIG.

(A) Motion detection process
FIG. 11 is a flowchart showing the procedure of the motion detection process in step S5a. This motion detection process is executed by the motion detection unit 25a, which is one of the components of the user detection unit 25. Here, the case where the luminance of an image is used to detect the movement of a person / thing will be described.

  The motion detection unit 25a reads low-resolution images stored in the storage unit 24 one by one, divides each image into a grid, and calculates an average luminance value for each block obtained thereby (step A1). At that time, the motion detection unit 25a holds, as an initial value, an average luminance value for each block calculated from the first image in time series in a buffer area (not shown) in the storage unit 24 (Step S1). A2).

  When the second and subsequent detection area images are read, the motion detection unit 25a calculates the average luminance value for each block of the current image and the average luminance value for each block of the previous image held in the buffer area. Are compared (step A3). As a result, when there is a block having a luminance difference equal to or larger than a preset value in the current image, the motion detection unit 25a determines that the block is a block with motion (step A4).

  When determining the presence or absence of motion for the current image, the motion detection unit 25a holds the average luminance value for each block of the image in the buffer area for comparison with the next image (step A5).

  Thereafter, in the same manner, the motion detection unit 25a repeatedly determines the presence or absence of motion while comparing the luminance values of the low-resolution images stored in the storage unit 24 in block order in time series.

(B) Position estimation processing
FIG. 12 is a flowchart showing the procedure of the position estimation process in step S5b. This position estimation process is executed by the position estimation unit 25b, which is one of the components of the user detection unit 25.

  The position estimation unit 25b checks a block with motion in the current image based on the detection result of the motion detection unit 25a (step B1). As a result, when there is a block with motion in the motion detection area E1, the user detection unit 25 extracts a block closest to the car door 13 from among the blocks with motion (step B2).

  Thereafter, the position estimating unit 25b obtains the Y coordinate (Y coordinate of the car direction from the center of the car door 13) of the block closest to the car door 13 as data of the user's foot position, and stores it in the storage unit 24. Is held in a buffer area (not shown) (step B3).

  In the same manner, the position estimating unit 25b obtains the Y coordinate of the block with the movement closest to the car door 13 for each image as data of the user's foot position and holds it in the buffer area. Further, the data of the user's foot position is sent to the elevator control device 30.

  Returning again to the description of FIG. The elevator control device 30 determines whether or not the user's foot position data has been input (step S6). When there is no input of the user's foot position data (NO in step S6), the elevator control device 30 sends a normal door opening instruction signal for instructing the car door 13 to open at a normal speed. (Step S7). When the car 11 arrives at the hall 15 on the hall call registration floor, the car control device 40 opens the car door 13 at a normal speed according to the normal door opening instruction signal from the elevator control device 30 (step S8). The process here is terminated. When the car door 13 is fully opened, the motion detection area E1 is reset to the landing 15 side, and the process of FIG.

  On the other hand, when there is an input of the user's foot position data (YES in step S6), the elevator control device 30 recognizes the user having the foot position as the alert target person (step S9). In the series of processes shown in FIG. 10, the number of times the person to be alerted is recognized is stored in a temporary memory (not shown).

  Subsequently, the elevator control device 30 refers to a temporary memory (not shown) and determines whether or not the number of times of recognizing the alert target person after setting the motion detection area E1 as the current area is the second time ( Step S10).

  When it is determined that the number of times of recognizing the attention target person is not the second time, that is, the first time (NO in step S10), the elevator control device 30 controls the attention target person (user). A warning instruction signal for instructing that there is a possibility that the arm may be drawn into the car door 13 is output to the car control device 40 (step S11). The car control device 40 warns that there is a possibility that a hand or an arm may be drawn into the car door 13 in accordance with a warning instruction signal from the elevator control device 30 (in other words, prompts the user to leave the car door 13). After the speaker 17 is controlled to output a message (or warning sound) for the purpose (step S12), the process returns to step S5, and the user detection process is executed again.

  On the other hand, if it is determined that the number of times the person to be alerted has been recognized is the second time (YES in step S10), the elevator control device 30 opens the car door 13 by lowering the door opening speed than usual. A low-speed door opening instruction signal for instructing to be output is output to the car control device 40, and the above-described warning instruction signal is output to the car control device 40 again (step S13). The car control device 40 may cause the car door 13 to open at a low speed according to the low speed door opening instruction signal from the elevator control device 30, and the hand or arm may be drawn into the car door 13 according to the alert instruction signal. The speaker 17 is controlled to output again a message for alerting the user (step S14), and the process here is terminated. As described above, when the car door 13 is fully opened, the motion detection area E1 is reset to the landing 15 side, and the process of FIG.

  Next, an example of the operation of the elevator control system when the car door 13 is fully opened and the motion detection area E1 is reset to the landing 15 side will be described with reference to the flowchart of FIG.

  First, the resolution reduction processing unit 23 in the image preprocessing device 21 reduces the resolution of each image continuously captured by the camera 12 and generates a low resolution image (step S21). Note that the generated low-resolution image is sequentially sent to the image processing device 22.

  Next, when receiving the input of the low resolution image sent from the image preprocessing device 21, the image processing device 22 stores the received low resolution image in the storage unit 24 while sequentially storing the received low resolution image. The detection process is executed in real time (step S22). Note that the details of the user detection process have already been described with reference to FIGS. 11 and 12, and thus detailed description thereof is omitted here.

  When the elevator control device 30 receives the input of the user's foot position data sent from the image processing device 22, the elevator control device 30 takes the user having the foot position on the basis of the received foot position data. It is determined whether or not there is an intention to get on the car 11 (step S23). In addition, when it determines with not having the intention to board the car 11 (NO of step S23), it progresses to the process of step S26 mentioned later.

  On the other hand, if it is determined that the car 11 has an intention to get on (YES in step S23), the elevator control device 30 instructs the car door 13 to be kept open. Is output to the car control device 40 (step S24). The car control device 40 prohibits the door closing operation of the car door 13 according to the door open maintenance instruction signal from the elevator control device 30 and maintains the door open state (step S25).

  Specifically, when the car door 13 is fully opened, the elevator control device 30 starts a door opening time counting operation and closes the door when a predetermined time T (for example, 1 minute) is counted. When a user who is determined to have a boarding intention is detected during this period, the elevator control device 30 stops the count operation and clears the count value. Thereby, the door open state of the car door 13 is maintained during the time T described above.

  If a user who is determined to have a boarding intention is further detected during this period, the count value is cleared again, and the car door 13 is kept open for the time T described above. become. If the user comes many times during the time T described above, the car door 13 cannot be closed indefinitely. Therefore, an allowable time Tx (for example, 3 minutes) is provided, and this allowable time Tx. It is preferable to forcibly close the car door 13 when the time elapses.

  When the counting operation of time T described above is completed (step S26), the elevator control device 30 outputs a door closing instruction signal for instructing to close the car door 13 to the car control device 40. The car control device 40 closes the car door 13 in accordance with the door closing instruction signal from the elevator control device 30 (step S27), and ends the processing here.

  According to the embodiment described above, the elevator control system may cause the user's hand or arm to be drawn into the car door 13 using the image taken by the camera 12 installed in the car 11. Since it is determined whether or not there is a problem, there is no problem of false detection due to dirt on the floor or reflection due to the material of the car door or the floor, and the user can be detected with high accuracy.

  Further, since the camera 12 can be used for both the user detection process on the landing 15 side and the user detection process on the car 11 side, the cost for executing the user detection process is suppressed. can do.

  Further, the elevator control system alerts the user when the user's hand or arm is likely to be pulled into the car door 13, and lowers the door opening speed of the car door 13 than usual. Since the door can be opened, the risk of the user's hand or arm being drawn into the car door 13 can be further reduced.

  In addition, the elevator control system can set a suitable motion detection area E1 according to the current loaded load in the car 11, and thus executes a user detection process in consideration of the congestion state in the car 11. be able to.

  In the present embodiment, the car door 13 is assumed to be a center-open car door. However, the present invention is not limited to this, and the car door 13 may be a sliding car door. In this case, as shown in FIG. 14, the motion detection area E1 set on the car 11 side includes two floor surfaces adjacent to the door pocket in which the car door 13 is housed, and one doorway column adjacent to the door bag. Set to Even in this case, the same effects as the various effects described above can be obtained.

  In addition, although some embodiment of this invention was described, these embodiment is shown as an example and is not intending limiting the range of invention. These novel embodiments can be implemented in various other forms, and various omissions, replacements, and changes can be made without departing from the scope of the invention. These embodiments and modifications thereof are included in the scope and gist of the invention, and are included in the invention described in the claims and the equivalents thereof.

  DESCRIPTION OF SYMBOLS 11 ... Car, 12 ... Camera, 13 ... Car door, 14 ... Landing door, 15 ... Landing place, 16 ... Load detector, 17 ... Speaker, 20 ... Image analysis device, 21 ... Image preprocessing device, 22 ... Image processing Device: 23 ... Resolution reduction processing unit, 24 ... Storage unit, 25 ... User detection unit, 25a ... Motion detection unit, 25b ... Position estimation unit, 30 ... Elevator control device, 40 ... Car control device, 41 ... Door opening / closing control Part, E1... Motion detection area.

An elevator control system according to an embodiment includes a camera capable of photographing a landing including the vicinity of a door of a car, and a door opening / closing state of the door of the car among a plurality of images photographed by the camera. Detecting means for detecting the movement of the user by comparing a plurality of images taken in a block unit from the state to the fully open state, and a part of the user's body is drawn into the door A notification means for notifying a message for prompting the user to leave the door when the movement of the user is detected by the detection means within the fear warning area, and the warning area includes: The floor area in the vicinity of the door and the entrance / exit pillars installed on both sides of the door are set to include a warning area set on the floor surface in the vicinity of the door. Light from the landing side to the floor is set except areas Komu shines immediately door-opening start of the door from.

Claims (6)

A camera capable of photographing the hall including the vicinity of the door of the car,
Of the plurality of images photographed by the camera, comparing the plurality of images photographed during the period from the fully closed state to the fully opened state of the door of the car door, in block units, Detection means for detecting the movement of the user;
When a movement of the user is detected by the detection means in a warning area where a part of the user's body may be drawn into the door, a message for prompting the user to leave the door is notified. An elevator control system comprising: a notification means. The alert area is
The elevator control system according to claim 1, wherein the elevator control system is set so as to include a floor surface in the vicinity of the door and entrance / exit pillars installed on both sides of the door.   The elevator control system according to claim 2, wherein a warning area set on a floor near the door is adjacent to a door pocket of the door.   3. The elevator control system according to claim 2, wherein the warning area set in the doorway column includes at least a part of a boundary portion between each doorway column and the door pocket of the door. . 2. The door opening / closing control means for opening the door at a lower door opening speed than normal after the message is notified by the notification means. Elevator control system.   2. The elevator control system according to claim 1, wherein the camera is installed on a curtain plate in the car and is installed so that an angle of view is in a range of 60 degrees to 130 degrees.

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