JP2011191965A - Gate device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a gate device capable of increasing the authentication precision of a passenger by preventing deterioration in association accuracy between a human communication terminal and a passenger even if the transmission power of the human body communication is increased previously. <P>SOLUTION: An automatic ticket gate 1 includes a human body communication pad 5A, and through the human body communication pad 5A, obtains passage determination information from a human body communication terminal 15. The passage determination information includes, as the attribute information of a terminal carrier, attribute types such as the generation and sex of the passenger and human body feature quantities such as a height, a human body distance, and a human body size of the passenger. The automatic ticket gate 1 includes a stereoscopic camera 6A, and from a photographed image, estimates the attribute type and the human body feature quantities as attributes of the passenger. The automatic ticket gate 1 determines whether the passenger is permitted to pass a passageway or not by using the passage determination information, and in this process, determines whether the passenger corresponds to the terminal carrier or not based on the coincidence degree between a registration value and an estimation value of the attribute information. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a gate device that controls traffic based on traffic judgment information recorded on a ticket-check target medium, and more particularly to a gate device that uses a ticket-check target medium having a wireless communication function.

  As a gate device, a device that controls traffic using an RFID tag as an inspection target medium is widely used. When using the RFID tag, the user needs to perform an active operation of holding the check target medium in his / her hand and holding it in the vicinity of the gate device and a wireless communication area of about several centimeters.

  As a new gate device that does not require the user to perform the active operation as described above, a device using human body communication has been proposed (for example, see Patent Document 1). In this gate device, a human body communication pad is installed in a passage, and a user having a human body communication terminal as a medium to be checked is allowed to function as a dielectric of a capacitor that connects between the human body communication terminal and the human body communication pad. Human body communication is performed between the communication pad and the human body communication terminal. Therefore, the user can pass the passage controlled by the gate device only by passing the passage while contacting the human body communication pad.

JP 2007-172103 A

The intensity of radio waves passing through the passer's human body is extremely weak, and is affected by the passer's posture and passing position, presence or absence of inclusions such as clothes, bags and shoes, and the storage position of the human body communication terminal. For this reason, if a passerby tries to perform human body communication while moving, the signal level may become unstable and human body communication may not be performed.
Increasing the transmission power of human body communication increases the signal level of human body communication, but in that case, the human body becomes an antenna and radio waves are easily transmitted through the space, and others relay the radio waves from the terminal owner with the human body communication terminal As a result, an erroneous determination may be caused in the gate device. When such an erroneous determination occurs, the accuracy of association between the human body communication terminal and the passer-by decreases and becomes a problem.

  An object of the present invention is to provide a gate device that prevents the accuracy of association between a human body communication terminal and a passer-by from decreasing even if the transmission power of human body communication is increased in advance, thereby improving the passer-by authentication accuracy. There is.

The gate device of the present invention includes a human body communication unit, an attribute detection unit, and a traffic determination unit. The human body communication unit acquires the traffic determination information including the attribute information of the terminal owner from the human body communication terminal via the human body communication pad provided in the passage. An attribute detection part detects an attribute from the passerby of a passage. The traffic determination unit determines whether or not the passage of the passerby is permitted using the traffic determination information acquired by the human body communication unit. The pass determination unit determines whether or not the passer can pass based on the degree of coincidence between the attribute of the terminal owner ascertained from the attribute information and the attribute of the passer detected by the attribute detection unit.
If the degree of match between the terminal owner attribute and the passer-by attribute is low, the pass determination information transmitted from the terminal owner to the passer-by is detected even if the pass determination information acquired from the human body communication pad is appropriate. There is a high possibility of being. Therefore, by determining whether or not a passer can pass using the degree of matching of attributes, the accuracy of association between the human body communication terminal and the passer can be increased, and the authentication accuracy of the passer can be increased.
Note that the attributes in the present invention are identifiable features that the passers individually have, such as the passer's age and gender, and the passer's height, human body part interval, human body part size, etc. It is a concept that includes human body features.

It is preferable that the gate device of the present invention further includes a single determination unit. The single determination unit determines whether the human body located around the human body communication pad is single. It is preferable that the traffic determination unit excludes a passerby determined to be single by the single determination unit from a determination target of whether or not to permit based on the degree of matching of attributes.
Passers who pass through the aisle alone are more likely to be the owner of the terminal, and it is unlikely that the traffic determination information has been transmitted from another person. Therefore, it is possible to prevent the passer-by authentication accuracy from deteriorating without the determination.

  The human body feature detection unit of the present invention may estimate the attribute from the passer's image, or may estimate the passer's attribute by other sensing means.

  The attributes of the present invention are preferably those that can be estimated based on the appearance of the human body, and at least one or more determination items of human body feature values or attribute types may be used.

  According to this invention, if the degree of coincidence between the attribute detected from the passer and the attribute of the terminal owner ascertained from the pass determination information is low, the pass determination information is transmitted from another terminal owner to the passer and detected. Since it is highly possible that the person is not allowed to pass in the pass / fail judgment based on the pass / fail judgment information, the accuracy of the correspondence between the human body communication terminal and the passer is increased, and the passer's authentication accuracy is increased. Can be enhanced.

It is a schematic diagram explaining the outline | summary of human body communication. 1 is a schematic external perspective view of a gate device according to an embodiment of the present invention. It is a block diagram which shows the main internal structures of the gate apparatus shown in FIG. It is a flowchart which shows the outline of the control flow of the control part shown in FIG. It is a flowchart which shows the outline of the proximity determination process of the control flow shown in FIG. It is a flowchart which shows the outline of the passer's individual ticket gate process of the control flow shown in FIG. It is a figure explaining the outline of the matching confirmation process of the control flow shown in FIG.

FIG. 1 is a schematic view illustrating a propagation path (electric field lines) of a transmission signal from a human body communication terminal. In FIG. 1 (A), the electric lines of force generated from the human body communication terminal B of the terminal owner in the single state pass through the human body of the terminal owner, and most of them are directly from the human body or from the human body through the ground. Returning to the human body communication terminal B, only part of the electric lines of force pass through the human body communication pad A. For a part of the electric field lines passing through the human body communication pad A, the human body of the terminal owner functions as a dielectric of a capacitor that connects between the human body communication terminal B and the human body communication pad A.
In FIG. 1 (B), when the terminal owner and another person are in the proximity state, part of the electric lines of force generated from the human body communication terminal B are transmitted to the terminal owner, the space, and the other person. The communication pad A may be passed.
Since such a situation may occur, even if the proper traffic determination information can be acquired by the human body communication pad A, the passer touching the human body communication pad A is not necessarily the terminal owner of the human body communication terminal B. Not necessarily. For this reason, if it is determined whether or not each passer is allowed to pass using only the pass determination information as a determination material, there is a risk of overlooking the passerby without a bill. Therefore, in the present invention, not only the pass determination information but also the passer's attribute information is used as a determination material to determine whether or not each passer can pass.

  Hereinafter, an embodiment of the present invention will be described using an automatic ticket gate that is installed at a ticket gate of a station and performs ticket gate processing for a user who enters the station or a user who enters from the station.

FIG. 2A is a schematic external perspective view of the automatic ticket gate 1 according to the present embodiment. Here, a situation where the terminal owner enters the ticket gate passage from the entrance in a single state is shown. This terminal owner has the human body communication terminal 15, and in the human body communication terminal 15, the attribute registration value of the terminal owner is registered in advance as part of the traffic determination information.
The automatic ticket gate 1 is disposed adjacent to a pair of automatic ticket gates with the ticket gate passage therebetween, and the front surface and the rear surface of the housing are opposite to each other. For this reason, the ticket gate can be passed in both directions. However, in the ticket gate process mainly composed of the automatic ticket gate 1, the front side of the case of the automatic ticket gate 1 is the entrance to the ticket gate and the rear side of the case of the automatic ticket gate 1 is the ticket gate. It becomes the exit.

  The automatic ticket gate 1 includes a door 7A, a plurality of photoelectric sensors 9, a speaker 2A, a liquid crystal screen 8A, an RFID antenna 4A, magnetic ticket transport ports 3A and 3B, and a stereo camera 6A in its casing, and controls traffic. A human body communication pad 5A is provided in the ticket gate passage.

  The door 7A is provided in the vicinity of the passage exit on the side surface of the housing. The automatic ticket gate 1 closes the door 7A, thereby prohibiting a passerby who has been determined not to pass through the ticket gate passage.

  The plurality of photoelectric sensors 9 are arranged along the ticket gate passage and provided on the side surface of the housing. Each photoelectric sensor 9 is a transmission type structure in which a light emitting unit is provided on one side of a pair of automatic ticket gates and a light receiving unit is provided on the other side, and infrared light is irradiated to the ticket gate passage to shield a passer's human body. It is detected whether it is done. The automatic ticket gate 1 estimates that a passer who has entered the ticket gate passage is located in an area where the outputs of the plurality of photoelectric sensors 9 are continuously turned off, and tracks the movement of the passer. Then, a ticket gate process is performed on the passerby so as to have an appropriate control timing according to the tracked position. For example, if the back person of two passers-by passes continuously without a ticket, the preceding passer-by exits the ticket gate passage, and only the rear passer cannot pass through the door 7A. Close.

  The speaker 2A is provided in the vicinity of the passage entrance on the side surface of the housing. The automatic ticket gate 1 notifies the user of various guidance sounds and warning sounds from the speaker 2A.

  The liquid crystal screen 8A is provided near the passage exit on the top surface of the housing. The automatic ticket gate 1 notifies the user of various guidance displays and warning displays from the liquid crystal screen 8A.

  The RFID antenna 4A is provided on the passage entrance side of the top surface of the housing. By allowing the passerby to hold an RFID ticket that is one of the ticket inspection target media over the RFID antenna 4A, a radio wave propagation path is connected to the RFID ticket, and traffic determination information can be acquired from the RFID ticket.

  The magnetic ticket transport ports 3A and 3B are respectively provided on the passage entrance side and the passage exit side of the top surface of the housing. The magnetic ticket transport port 3A is loaded with a magnetic ticket gate, which is one of the ticket inspection target media, by a passerby. The magnetic ticket transport opening 3B returns the magnetic ticket gate to a passerby who passes through the ticket gate passage.

  The stereo camera 6A has two image pickup units arranged in order to obtain two picked-up images (stereo images) with parallax, and is provided at a position where a passer-by who enters the entrance of the ticket gate can be picked up. The automatic ticket gate 1 captures a stereo image near the entrance of the ticket gate at regular intervals (for example, 100 to 200 ms).

  The human body communication pad 5A is provided on the entrance side of the ticket gate passage. The human body communication pad 5A is stepped on by a passerby holding the human body communication terminal 15 with shoes, whereby a radio wave propagation path is connected to the human body communication terminal 15 via the human body of the passerby. Traffic determination information is acquired from the communication terminal 15. Since the human body communication pad 5A is provided, the user can carry out the ticket gate process on the automatic ticket gate 1 without performing an active operation such as holding the medium to be checked and holding it over the RFID antenna 4A like an RFID ticket gate. It becomes possible to do.

FIG. 3 is a block diagram showing a main internal configuration of the automatic ticket gate 1.
The automatic ticket gate 1 includes a control unit 10, a sound emission processing unit 2, a magnetic ticket processing unit 3, an RFID communication circuit unit 4, a human body communication circuit unit 5, an image processing unit 6, a door drive processing unit 7, a display as main internal components. A processing unit 8 and the above-described photoelectric sensor 9 are provided.

  Based on the traffic determination information read from the human body communication terminal 15, the control unit 10 determines whether or not a passerby can pass through the ticket gate, and controls the operation of each unit in the automatic ticket gate 1 based on the determination. Further, based on the stereo image captured by the stereo camera 6A, it is determined whether the human body is in a single state or a proximity state in which a plurality of human bodies are positioned around the human body communication pad 5A. The control unit 10 corresponds to a traffic determination unit and a single determination unit described in the claims.

  The image processor 6 extracts the passerby's human body from the stereo image captured by the stereo camera 6A. Then, the age, sex, height, human body part interval, and human body part size of the human body are estimated by image recognition. The image processing unit 6 and the stereo camera 6A constitute an attribute detection unit described in the claims.

  The human body communication circuit unit 5 is connected to the aforementioned human body communication pad 5A. The circuit configuration of the human body communication circuit unit 5 may be a known circuit configuration described in the above-mentioned prior art document and the detailed description is omitted, but a receiving unit that detects a reception signal from the human body communication terminal 15; A transmission unit that outputs a transmission signal to the human body communication terminal 15. The receiving unit demodulates the signal received by the human body communication pad 5A, analog-digital converts the demodulated signal, and outputs it to the control unit 10 as a digital signal. The transmission unit acquires information to be recorded in the human body communication terminal 15 from the control unit 10, and outputs a transmission signal modulated based on the information to the human body communication pad 5A. The human body communication circuit unit 5 performs human body communication with higher transmission power than before in order to prevent uncertain human body communication. The human body communication circuit unit 5 constitutes the human body communication unit described in the claims together with the human body communication pad 5A.

  The magnetic ticket processing unit 3 is configured to perform a known magnetic ticket gate process and will not be described in detail. However, the magnetic ticket ticket transport unit 3A and 3B determines whether or not to pass the magnetic ticket ticket and determines whether to pass from the magnetic ticket gate. Read information, record information on magnetic ticket gates, etc. The magnetic ticket processing unit 3 and the magnetic ticket transport ports 3A and 3B are not essential to the present invention and may not be provided.

  The RFID communication circuit unit 4 is configured to perform a well-known RFID ticket check process and will not be described in detail. However, the RFID communication circuit unit 4 reads the pass determination information from the RFID ticket check memory via the above-described RFID antenna 4A, Records information to the memory. Note that the RFID communication circuit unit 4 and the RFID antenna 4A are not essential components of the present invention and may not be provided.

  The door drive processing unit 7 is configured to perform a well-known door drive process and will not be described in detail. However, the door 7A is opened and closed based on a control signal output from the control unit 10, and the door 7A is closed. This restricts traffic in the ticket gate.

  The sound emission processing unit 2 reads out and reproduces the sound signal from the memory based on the control signal output from the control unit 10, and notifies the passerby of various sound information from the speaker 2A. Note that the sound emission processing unit 2 and the speaker 2A are not essential to the present invention and may not be provided.

  The display processing unit 8 reads and reproduces the image signal from the memory based on the control signal output from the control unit 10, and notifies the passerby of various image information from the liquid crystal screen 8A. Note that the display processing unit 8 and the liquid crystal screen 8A may be configured by using a notification lamp or the like, or may not be provided because they are not essential to the present invention.

  The automatic ticket gate 1 according to the present embodiment has the above-described configuration, and prevents a decrease in the accuracy of association between the passer-by and the pass determination information by processing in the control unit 10 described below.

FIG. 4 is a flowchart showing an outline of the control flow of the control unit 10.
The control unit 10 keeps the time, and outputs a control signal for instructing the stereo camera 6A to perform image capturing and instructs the image processing unit 6 to perform image recognition at a certain time interval, for example, at an imaging timing of 100 ms. A control signal is output (S1 to S2). Accordingly, the stereo camera 6A captures a stereo image and records it in the image memory, and the image processing unit 6 extracts a human body based on at least one of the stereo images, detects the human body feature amount of the human body, and detects the age. Estimate attribute types such as sex and gender.

  Next, the control unit 10 performs proximity determination processing based on the output of the image processing unit 6, and determines whether the human body is in a proximity state where a plurality of human bodies are located around the human body communication pad 5A or whether the human body is in a single state where the human body is located alone. (S3).

FIG. 5 is a flowchart illustrating an example of the proximity determination process in the control unit 10.
Since it is possible to estimate the corresponding position in the three-dimensional space from the stereo image having parallax, the control unit 10 determines the distance to the head of the human body extracted from the camera in the three-dimensional space based on the stereo image. presume. When a plurality of human bodies are imaged, an interval (passer-by interval) from the center of the human head closest to the human body communication pad 5A to the center of the next human head is estimated (S8).
Next, when the passer-by interval is less than a predetermined threshold, for example, less than 50 cm, the control unit 10 determines that a plurality of people are in the vicinity of the human body communication pad 5A, and when the passer-by interval is equal to or greater than the threshold. Determines that there is only a single person around the human body communication pad 5A (S9).

  Returning to FIG. 4 again, if the current state is the proximity state, the control unit 10 outputs a control signal instructing voice notification to the sound emission processing unit 2 (S4 to S5). Thereby, the sound emission process part 2 performs audio | voice alerting | reporting which requires attention so that a passer-by interval may be expanded. This voice notification may be performed at regular time intervals or not at all.

  Moreover, the control part 10 detects the presence or absence of the passerby's approach to a ticket gate path | pass based on the input from the photoelectric sensor 9 (S6). If a passerby entry to the ticket gate is detected, passer individual ticket gate processing is started (S7). The passer-by-passenger ticket gate process is performed for each user who has entered the ticket gate passage, and is performed in parallel when there are a plurality of users in the ticket gate passage.

  The control unit 10 of the present embodiment repeats the above-described control flow, and periodically performs ticket gate processing for passers-by in parallel with imaging and proximity determination.

FIG. 6 is a flowchart showing passer individual ticket gate processing in the control unit 10.
In the passer-by-passenger ticket gate processing, the control unit 10 grasps the position of the individual passer-by in the ticket gate passage based on the input from the photoelectric sensor 9 and starts tracking the passer-by. (S11). In this process, the movement of a passerby existing at a corresponding position is grasped by tracking a shielded photoelectric sensor group whose position changes over time from the output of the photoelectric sensor 9.

  Next, whenever the control unit 10 reads the pass determination information from any one of the magnetic ticket gate, the RFID ticket gate, and the human body communication terminal 15, the control unit 10 passes along with the type of the ticket ticket in association with the tracked passerby. The determination information is stored in the memory (S12 to S13). The reading of the passage determination information is continued until the passerby reaches the no-tag determination position (S15).

  If the traffic determination information can be read, the association confirmation process (S14) is executed to prevent a decrease in the accuracy of the association between the traffic determination information and the passerby.

FIG. 7A is a flowchart showing the association confirmation process in the control unit 10.
In the association confirmation process, the control unit 10 determines whether the ticket inspection target medium that has read the traffic determination information is a human body communication terminal (S24). If the check target medium is a human body communication terminal and the current state is a single state, the association confirmation process is terminated as it is. If the current state is the close state, the image processing unit 6 estimates the passerby being tracked. The attribute of the passerby (attribute estimated value) is acquired, and the matching degree of the attribute is derived (S25 to S26).

Here, an example of a method for deriving the degree of matching of attributes will be described based on the table shown in FIG.
In the human body communication terminal 15, as the terminal owner attribute (attribute registration value), an attribute type such as gender and age, and a human body feature quantity such as height and human body part interval are registered in advance. Further, the image processing unit 6 estimates an attribute type and a human body feature amount as attributes (attribute estimation values) of the passerby.
Here, sex and age are used as attribute types. Further, here, the height, the height-arm length ratio, and the distance between both eyes are used as the human body feature amount. Height is the distance from the top to the foot of the passerby, the height-arm length ratio is the ratio of the arm length to the passer's height, and the distance between both eyes is the distance between the center positions of the eyes.

  The control unit 10 considers that the attribute of the passer and the attribute of the terminal owner match when the estimated attribute value of the passer matches the registered attribute value of the terminal owner or when the numerical value ranges overlap. Then, for example, the degree of coincidence is derived in such a manner that the degree of coincidence is 4/5 if four of the five determination items are coincident and the degree of coincidence is 5/5 if all coincide.

  Returning to FIG. 7A again, if the degree of coincidence derived is less than a threshold, for example, less than 70%, it is considered that the passer is different from the terminal owner, and the passer-by and the traffic determination information between If the association is inappropriate, it is recorded in the memory (S26). If the degree of coincidence is equal to or higher than a threshold, for example, 70% or higher, it is considered that the passerby coincides with the terminal owner, and this association confirmation process is terminated.

  Returning to FIG. 6 again, the control unit 10 determines whether or not traffic is permitted, and determines whether or not the traffic determination information associated with the tracked passer is appropriate for passing through the ticket gate (S17). . In addition, when a plurality of traffic determination information is acquired from a plurality of different check target media, it is preferable to select the traffic determination information according to some priority and determine whether the traffic is permitted or not.

  If the traffic determination information associated with the tracked passer is appropriate, the control unit 10 determines that the passer should pass, and the amount information and the input information to the check target medium. Exit information and the like are recorded, the door drive processing unit 7 is made to open the door 7A, and the display processing unit 8 displays a guidance image on the liquid crystal screen 8A (S18 to S20).

  If the tracked passer-by is a tagless or the pass determination information is inappropriate, the control unit 10 determines that the passer's pass should be prohibited, and the door drive processing unit 7. The door 7A is closed, a warning image is displayed on the liquid crystal screen 8A from the display processing unit 8, and a warning sound is emitted from the sound emission processing unit 2 to the speaker 2A (S21 to S22). As a result, a passerby whose association is canceled in the above-described association confirmation process (S14) is prohibited from passing through the ticket gate if it is not associated with other passage determination information.

  Then, the control unit 10 maintains the current state until the passer-by exits from the ticket gate, and after the exit, the tracking of the passer-by and the passer-by-passer ticket processing are finished (S23).

  Since the automatic ticket gate 1 of the present embodiment executes a control flow including the above-described association confirmation processing, even if the transmission power of human body communication is increased, as illustrated and described in FIG. It is possible to prevent a passer without a tag from passing through the ticket gate by mistake based on the pass determination information of the human body communication terminal possessed by the adjacent terminal owner, and to reduce the accuracy of the correspondence between the pass determination information and the passer. By preventing this, the passer-by authentication accuracy can be improved.

In the above description, the case where the present invention is applied to station service has been described as an example. However, the present invention can be applied to various gate devices such as entrance / exit management using human body communication.
In addition, the example of determining whether the state is a proximity state or a single state and determining the degree of coincidence of attributes when in the proximity state is used, but the present invention does not depend on the determination result whether the state is a close state or a single state The degree of attribute matching may always be determined.
Moreover, although the example which estimates the attribute of a human body from a stereo image was shown, this invention may make it estimate an attribute from a monocular image, and may estimate the attribute of a human body with sensing means other than using an image. . Furthermore, the size of the human head in a monocular image may be compared to determine the passer-by interval, and the proximity determination may be performed based on the passer-by interval.
Moreover, although the example which uses attribute types, such as an age and sex, and human body feature-values, such as a height and a human body part space | interval, was shown as an attribute, this invention may make it use any one of them. Alternatively, other features that can be grasped from the appearance of the human body may be used.
By using a combination of terminal authentication and attribute authentication by a human body communication terminal, it is possible to improve passer-by authentication accuracy. Even in that case, the terminal authentication by the human body communication terminal is performed mainly based on the degree of coincidence of the attribute authentication, so that the passerby wears sunglasses or a mask and the attribute detection based on the image recognition is performed. Even in a case where only a part can be performed, a practical authentication accuracy can be obtained. Also, by registering only the attribute information data that can be extracted from the image data, not the image data itself, in the human body communication terminal, the amount of data registered in the human body communication terminal and the data processing amount based on the attribute information can be suppressed.

1-automatic ticket gate 2-sound emitting processing unit 2A-speaker 3-magnetic ticket processing unit 3A, 3B-magnetic ticket transport port 4-RFID communication circuit unit 4A-RFID antenna 5-human body communication circuit unit 5A-human body communication pad 6 -Image processing unit 6A-Stereo camera 7-Door drive processing unit 7A-Door 8-Display processing unit 8A-Liquid crystal screen 9-Photoelectric sensor 10-Control unit 15-Human body communication terminal

Claims (4)

A human body communication unit that acquires traffic determination information including the attribute information of the terminal owner from the human body communication terminal via the human body communication pad provided in the passage;
An attribute detection unit for detecting attributes from passers-by of the passage;
A traffic determination unit that determines whether or not the passage of the passer can pass using the traffic determination information acquired by the human body communication unit;
The pass determination unit determines whether or not the passer can pass based on a degree of coincidence between the attribute of the terminal owner grasped from the attribute information and the attribute of the passer detected by the attribute detection unit. Gate device. A single determination unit for determining whether the human body located around the human body communication pad is single;
The gate device according to claim 1, wherein the traffic determination unit excludes a passerby determined to be single by the single determination unit from a determination target of whether or not to allow based on the degree of matching of attributes.   The gate device according to claim 1, wherein the attribute detection unit acquires an attribute from a passerby image.   The gate device according to any one of claims 1 to 3, wherein at least one or more determination items related to a passer's attribute type or a human body feature amount are used as the attribute.

Images