JP2008134730A - Passage management system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To improve convenience by enabling temporary stoppage of an operation detecting unauthorized passage, at a specified case where articles are carried in or carried out, visitors enter, and so on. <P>SOLUTION: An authentication device 3 for authenticating is disposed adjacent to an entrance. A person watching device 1 includes an imaging means 11 for photographing around the entrance, including the entrance, and a means for counting the number of passing persons 12 for counting the number of persons passing through the entrance by means of a photographed image. A signal processing means 10 provided for the watching device 1 compares the number of authentication authenticated by the authentication device 3 with the number of passing persons counted by the means 12, and instructs to issue warning to a warning output device 5, when the number of authentication and the number of passing persons do not match. The watching device 1 is provided with a stop means 14 for selecting valid or invalid of instruction for issuing a warning to the output device 5. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a passage management system that prevents unauthorized passage of a passage by confirming the number of people passing through the passage that requires authentication.

  Conventionally, in order to restrict entry to a management area that requires authentication for entry (for example, in a specific room or a specific building), the locked state and unlocked state are selected by electrical control at the entrance to the management area. Technology that controls the door device to the unlocked state only when the door device is locked at all times and the individual who has the authority to enter is authenticated by performing personal authentication by ID card or biometric Is adopted.

  However, in this type of passage management system, since the unlocked state is maintained for a certain period of time during which an authorized person can pass after controlling the door device to the unlocked state, authentication is not received during this period. There is a possibility that no one will enter the controlled area. This type of unauthorized entry includes “follow-up”, where more people than the authorized number of people enter, “passing” where people in the unmanaged area enter when people leave the controlled area, and people in the managed area There are three types of “invitation” in which a person enters from an unmanaged area when the door device is unlocked. If authentication is required even when leaving the managed area, there is a possibility that an unauthorized exit may occur due to the same operation when leaving the managed area to the non-managed area.

  In order to deter this type of unauthorized entry, it is considered to use a technique for separately monitoring people by using an image obtained by taking an image of a person who enters and leaves by an imaging means ( For example, see Patent Document 1). In this technique, a person is extracted from an image picked up by an image pickup means, and the number of people staying in a detection area set near the entrance and the number of people passing through the entrance are counted.

  As a technology to prevent unauthorized entry in advance, the number of people staying in the detection area set near the entrance is counted, and when this number is one and the number of people authenticated by the authentication device is one Only unlocking the door device is considered. The detection area can be set within the field of view of the imaging means in the unmanaged area, but in order to further increase safety, an authentication room separated from the unmanaged area is provided near the entrance outside the managed area, It is also considered to provide a door device that can be locked and unlocked at the entrance to the authentication room. In a configuration with a certification room, entry to the controlled area is not permitted unless one person stays in the certified room, and the entry between the non-managed area and the certified room is not allowed to enter the managed area. Since it must pass through two places, the mouth and the entrance between the authentication room and the management area, unauthorized entry is impossible.

On the other hand, as a technology to deter unauthorized entry, a technology that counts the number of people passing through the doorway after unlocking the door device and issues an alarm when it does not match the number of people authenticated by the authentication device is considered. It has been. In this technique, when a plurality of people try to pass through the entrance, one person is authenticated by the authentication device and another person is also authenticated by the authentication device one after another while the door device is unlocked. It is possible to maintain the unlocked state of the door device and pass through the opening. On the other hand, an alarm is issued when the number of people who have passed the authentication is larger than the number of people authenticated by the authentication device, so that it is informed that there has been unauthorized entry, and unauthorized entry can be suppressed.
JP 2006-243972 A

  By the way, in an image captured by the imaging means, an article of the same size as a person cannot be distinguished from a person, so when an article of the same size as a person is brought into a management area, it is erroneously detected as a person. If a person with admission authority tries to enter a management area with a visitor who does not have admission authority, the admission is also considered as illegal admission. Although depending on the type of management area, this type of admission may occur on a daily basis, so if these admissions are prohibited, it will be inconvenient.

  The present invention has been made in view of the above-mentioned reasons, and its purpose is to temporarily stop the operation of detecting an illegal passage in a specific case such as when an article is carried in or out or a visitor. It is to provide a passage management system with improved convenience.

  The invention of claim 1 includes an authentication device that is arranged adjacent to a passage that requires authentication for passage and that authenticates a person passing through the passage, and an imaging unit that captures an image in the vicinity of the passage including the passage. A person monitoring device that extracts a person's presence area from the captured image, and the person monitoring device counts the number of passing people passing through the entrance, the number of authentications and the number of passing people authenticated by the authentication device The signal processing means for instructing the alarm output means to notify the alarm when the number of passing persons counted by the counting means is compared and the number of authentication and the number of passing persons do not match, and the validity and invalidity of the alarm notification instruction to the alarm output means And a stopping means for selecting.

  According to a second aspect of the present invention, in the first aspect of the present invention, in the first aspect of the present invention, a door device provided with a locking means arranged to open and close the opening and capable of being locked and unlocked by electric control, and a lock using an authentication result by the authentication device And an access control device having a lock control means for instructing locking / unlocking to the means, and the person monitoring device is provided for the entrance based on the presence area of the person extracted from the image before unlocking the locking means. The number of staying person counting means for counting the number of people staying in the detection area set in the space where the authentication apparatus is arranged is provided, and the lock control means is the stay counted by the staying person counting means when the authentication apparatus authenticates The locking means is unlocked when the number of persons is within a specified range.

  According to a third aspect of the present invention, in the first or second aspect of the present invention, the stop means is selected from valid and invalid when a control signal is given.

  According to a fourth aspect of the present invention, in the third aspect of the present invention, the stop means receives a control signal from the authentication device.

  According to a fifth aspect of the invention, in the third aspect of the invention, the lock control means includes an automatic closing mode for instructing locking when the door device is closed after a lock means is unlocked or when a certain opening time has elapsed, and a lock means. If the authentication device authenticates with the continuous open mode that does not lock after unlocking, and the locking device is locked, and the authentication device authenticates with the locking device unlocked. A repetitive opening / closing mode for instructing locking can be selected by a mode selection signal input from the outside, and the person monitoring device uses a mode selection signal for selecting a continuous opening mode and a repetitive opening / closing mode as the control signal. It is characterized by that.

  According to a sixth aspect of the present invention, in the third aspect of the invention, the lock control means includes an automatic closing mode for instructing locking when the door device is closed after a lock means is unlocked or when a certain opening time has elapsed, and a lock means. If the authentication device authenticates with the continuous open mode that does not lock after unlocking, and the locking device is locked, and the authentication device authenticates with the locking device unlocked. The repetitive opening / closing mode for instructing locking can be selected by a mode selection signal input from the outside, and the access control device is capable of generating a pulse signal for each authentication by the authentication device while the automatic closing mode is selected. And an authentication output means for outputting a contact signal that is turned on while the continuous open mode or the repetitive open / close mode is selected, and the signal processing means in the human monitoring device includes a pulse signal and a contact While the contact signal identifies the issue is input, characterized in that to enable the stop means.

  According to a seventh aspect of the invention, in the sixth aspect of the invention, a scheduler for changing each mode of the mode selection signal according to a time schedule is added.

  According to an eighth aspect of the present invention, in the invention according to any one of the first to seventh aspects, the imaging unit includes a light emitting source that projects intensity-modulated light, and a phase of intensity-modulated light detected by each pixel of the imaging unit. A distance image generation unit that detects a distance from the object to the object as a pixel value of each pixel, and the signal processing unit is an existence region of a person existing in the field of view based on the pixel value obtained by the distance image generation unit Are individually extracted and used for counting people by the staying number counting means and the passing number counting means.

  According to the configuration of the first aspect of the invention, since the stop means is provided, it is possible to select whether or not alarm notification is performed by the alarm output means. In a specific case such as this, it is possible to temporarily stop the alarm notification and pass through the entrance regardless of whether or not it is an illegal pass, thereby improving operational convenience.

  According to the configuration of the invention of claim 2, the door is provided at the entrance, and the locking means is unlocked if the number of people staying in the detection area is not less than the specified range even if the authentication means authenticates before unlocking the locking means. Therefore, for example, by defining the number of visitors as one, it is possible to prevent a person who does not receive authentication from passing through the entrance.

  According to the configuration of the invention of claim 3, since the stopping means is controlled by the control signal, an instruction to enable and disable the stopping means from a distance using a management computer and other devices that construct a passage management system. It becomes possible to control.

  According to the configuration of the invention of claim 4, since the validity / invalidity of the stopping means is controlled using the authentication device, there is no need to provide another device for controlling the stopping means, and a large article is allowed to pass through. In addition, when a person who is authenticated by the authentication device passes along with an unauthenticated visitor or the like, a stop means for simple work can be made effective. Since this operation is temporary, it is desirable to automatically return to the original state.

  According to the configuration of the invention of claim 5, the validity / invalidity of the stopping means can be automatically selected by selecting the operation mode for controlling the locking means, and the mode interlocked with the operation mode for controlling the locking means. The stop means can be operated.

  According to the configuration of the invention of claim 6, since it is possible to notify the person monitoring means of the validity / invalidity of the stopping means according to the operation mode for controlling the locking means, it is necessary to count the number of passing persons and the number of staying persons. No, it can be linked with the validity / invalidity of the stopping means. Also, either a pulse signal or a contact signal is sent to the human monitoring device according to the operation mode selected by the access control device, and the human monitoring device identifies whether it is a pulse signal or a contact signal to enable / disable the stop means. Therefore, the connection line for sending the pulse signal for counting the number of authentications and the connection line for sending the contact signal for controlling the stop means are combined, and as a result, The number of connection lines connected to the monitoring device can be reduced.

  According to the configuration of the invention of claim 7, since the validity / invalidity of the stopping means is switched according to the time schedule, both time zones are automatically switched into a time zone where authentication is not required and a time zone where authentication is required. It becomes possible.

  According to the configuration of the eighth aspect of the invention, since the imaging means constitutes an active distance image sensor that projects light from the light source, the colors of the person's clothes and the background in the detection area are similar. However, the human presence area can be easily separated from the background due to the difference in distance. In addition, since a plurality of imaging elements are not required unlike the stereo image method, adjustment during use is easy, and it can be realized at a lower cost than when the stereo image method is adopted.

(Embodiment 1)
In the present embodiment, as the simplest configuration of the present invention, as shown in FIG. 2, an example is shown in which the opening 21 between the management area D1 and the non-management area D2 is opened.

  On the ceiling C of the non-management area D2, the person monitoring apparatus 1 including an imaging unit 11 (see FIG. 1) that captures an image in the vicinity of the entrance 21 including the entrance 21 is disposed. In addition, the authentication device 3 is disposed on the wall surface W adjacent to the passage 21 in the non-management area D2.

  The authentication device 3 is assumed to use an ID card based on RFID (so-called IC chip), but it is also possible to adopt a configuration that performs authentication based on a magnetic card type ID card or biometrics such as a fingerprint. The authentication device 3 is connected to the person monitoring device 1 via the access control device 4, and outputs one pulse signal to the access management device 4 for each authentication by the authentication device 3 to notify the person monitoring device 1. Authentication output means 41 is provided.

  In the field of view of the imaging device 11 provided in the person monitoring device 1, a detection area A1 that is a rectangular region in a plan view is set. The detection area A1 is set to include at least the upper end of the passage 21 on the passage 21 side. The human monitoring apparatus 1 is configured to extract a person's presence area from an image captured by the imaging means 11 and to track the person's existence area existing in the detection area A1 extracted by the signal processing means 10. Passing number counting means 12 is provided for judging the passage of the mouth 21 and counting the number of people who have entered the management area D1 through the passage 21.

  As a technique for extracting a human presence region from an image captured by the imaging unit 11, a technique for separating a background and a person using a grayscale image can be adopted. For example, the color of a floor surface and a person's clothing If they are similar colors, it may be difficult to distinguish them in a grayscale image. Therefore, a distance image is used in which the distance to the object corresponding to each pixel of the imaging unit 11 is the pixel value of each pixel. Using distance images, people can be extracted regardless of the color of the background and the clothes of the person, and even when the person is approaching, by using information on the position and size of the head, It becomes possible to separate people individually. That is, by employing the distance image, it is possible to individually extract the persons in the detection area A1 and reliably count the number of persons.

  In the present embodiment, an active configuration is employed in which intensity-modulated light is projected from a light source (not shown) such as a light emitting diode. In this technique, the amount of received light in a plurality of specific phase sections of intensity-modulated light is obtained for each pixel, and the phase difference between light projection and reception is obtained from the obtained plurality of received light amounts. The intensity-modulated light is light whose intensity is modulated with a modulation signal having a constant frequency, and the phase difference between light projection and reception can be converted into the distance to the object.

  This technique will be briefly described. Now, the intensity-modulated light is projected from the light source to the target space as shown in FIG. 3A, and the intensity of the light incident on one pixel of the imaging means 11 changes as shown in FIG. Then, since the time difference Δt of the same phase reflects the distance L to the object, if the speed of light is c [m / s] and the time difference Δt [s] is used, the distance L to the object is L = c -It is represented by Δt / 2. If the frequency of the modulation signal that modulates the intensity of light is f [Hz] and the phase difference is φ [rad], the time difference Δt is Δt = φ / 2πf. Can be sought.

This phase difference φ may be regarded as a phase difference between the modulation signal for driving the light emitting source and the incident light to each pixel of the imaging means 11. Therefore, the received light intensity of the incident light to the imaging means 11 is obtained for a plurality of different phases of the modulation signal, and the phase difference φ between the incident light and the modulated signal is obtained from the relationship between the obtained phase and the received light intensity. Specifically, the imaging unit 11 detects the amount of received light for each phase interval having a predetermined phase width (time width), and uses the received light output corresponding to the received light amount for the calculation of the phase difference φ. If each phase interval is 90 degrees, four phase intervals with equal phase intervals are periodically obtained for one cycle of the modulation signal. By using the received light amounts A0 to A3 of each phase interval, the phase difference φ is , Φ = tan ⁻¹ {(A0−A2) / (A1−A3)}. Note that the sign of the phase difference φ changes depending on which phase of the modulation signal the received light amounts A0 to A3 correspond to. In the example shown in FIG. 3, each phase section is set to a phase width of 90 degrees, but the phase width can be set as appropriate.

  The signal processing means 10 counts the number of authentications by counting the pulse signals obtained from the authentication output means 41, compares the number of passing persons counted by the passing person counting means 12 with the number of authentications, and the number of passing persons is authenticated. When the number is larger than the number, the alarm output device (alarm output means) 5 has a function of instructing the alarm to be issued (this function will be described later). However, the person monitoring apparatus 1 also includes a stopping unit 14 for stopping the function. When the stop means 14 instructs the stop of the above function, the signal processing means 10 does not make a comparison determination between the number of passing people counted by the passing number counting means 12 and the number of authentications, or warns the warning output device 4 Do not give instructions to issue. In the human monitoring device 1, the signal processing means 10 and the passing person counting means 12 are realized using a microcomputer.

  The stop means 14 can be a mechanical switch such as a dip switch. However, the person monitoring apparatus 1 is provided with a terminal for receiving a control signal from the outside, and the stop means 14 inputs the control signal according to the input of the control signal. If valid / invalid of the function (function to instruct warning) is selected, the above function can be validated / invalidated using other devices for constructing a passage management system or a computer such as a computer that controls the system. Therefore, it is possible to give instructions from a distance, which increases convenience. In each embodiment described below, it is assumed that a configuration for selecting validity / invalidity of the above function by receiving an external control signal is used.

  An example of the procedure of the above function is shown in FIG. First, when the operation is started, the number of authentications and the number of passing people are initialized to 0 (S1), and the presence or absence of authentication is waited (S2). When authentication is performed by the authentication device 3 (S2), a pulse signal is notified from the authentication output means 41 to the signal processing means 10 for each authentication, so that each time a pulse signal is input, the number of authentications is counted (S3). The signal processing means 10 gives a trigger to the timer that limits the time limit (S4), and performs the time limit of the time limit by the timer (S5).

  The timer is retriggerable and times a time limit that is a fixed time from the trigger each time a trigger is applied. This time limit is a time limit from the authentication by the authentication device 3 until it passes through the passage 21, and even if authenticated by the authentication device 3, the authentication is invalid if it does not pass the passage 21 within the time limit. That is, if the time limit has elapsed after receiving authentication and the passage 21 is not passed, the number of people passing through is initialized to 0 (S6).

  When the number of passing people within the time limit is detected by the passing number counting means 12 (S7), the number of passing people is counted (S8), and the number of passing people is subtracted from the number of authentications (S9). When the number of passing people is larger than the number of authentications (that is, when the value obtained by subtracting the number of passing people from the number of authentications is negative) (S10), an unauthenticated person has passed. An alarm notification is instructed (S11), and the number of authentications and the number of passers are initialized to 0 (S12). When the passing number is within the range of the number of authentications in step S10, the process returns to step S2 and waits for the next authentication. Although not shown, the alarm notification instruction to the alarm output device 5 can be appropriately reset by an operation, and the alarm notification can be stopped by the reset.

  By the process of the procedure shown in FIG. 4, it is possible to make a comparison determination between the number of authentications and the number of passing people, and to issue an alarm from the alarm output device 5 when the number of passing people is larger than the number of authentications.

  As described above, in the present embodiment, since the stop means 14 is provided, it is possible to select a state in which alarm notification by the alarm notification device 5 is not performed. When carrying in D1 or entering the management area D1 with a person who has not been authenticated and registered in the authentication device 3, the alarm notification operation by the alarm notification device 5 is temporarily stopped by the stop means 14. It is possible to operate with high convenience while always restricting entrance to the management area D1 and improving safety.

(Embodiment 2)
In the first embodiment, an example in which the opening 21 is opened is shown, but this embodiment shows an example in which the door device 2 is arranged in the opening 21, as shown in FIG. The door device 2 includes a lock unit 22, and as shown in FIG. 5, unlocking and locking of the lock unit 22 is instructed from a lock control unit 42 provided in the access management device 4. The lock control means 42 controls the opening and closing of the lock means 22 by integrating instructions from the signal processing means 10 of the person monitoring device 1 and the authentication output means 41 connected to the authentication device 3.

  Here, the lock of the lock means 22 means that the lock means 22 is maintained in a closed state, and the lock means 22 may be an electric lock as long as the door device 2 can be locked and maintained in the closed state. It is possible to adopt other than the configuration provided with a dead bolt. Further, the door device 2 adopts a configuration that is opened and closed using a drive source such as a motor, and automatically opens the door device 2 together with the unlocking of the locking means 22 or automatically closes the door device 2. It may be something to do. Furthermore, it is desirable to employ a configuration in which the locking means 22 is automatically locked as the door device 2 is closed.

  The person monitoring device 1 includes not only the passing number counting means 12 for counting the number of persons passing through the passage 21 but also the staying number counting means 13 for counting the number of persons present in the detection area A1. Whether or not the number of staying persons counted by the staying person counting means 13 is used can be selected by an instruction from an external control signal as in the case of the stopping means 14. If the staying number counted by the staying number counting means 13 is not used, the operation is the same as that of the first embodiment, the passing number counted by the passing number counting means 12 is compared with the authentication number, and the alarm output device 5 is connected. I will give instructions.

  However, since the door device 2 having the lock means 22 is provided in the present embodiment, the time limit by the time limit is unnecessary, and the lock means 22 is unlocked from the locked state until the next time it is locked again. Count the number of people passing through during the period. That is, as shown in FIG. 7, when the operation is started, the number of authentications and the number of passing persons are initialized to 0 (S1), and the presence or absence of authentication is waited (S2). When authenticated by the authentication device 3 (S2), a pulse signal is notified from the authentication output means 41 to the signal processing means 10 every time the authentication device 3 authenticates, so the number of authentication is counted for each input of the pulse signal ( S3).

  If other conditions are also satisfied after the authentication, the lock means 22 is unlocked (S4). Therefore, if the passage number counting means 12 detects the passage of the passage 21 (S5), the signal processing means 10 Is counted (S6), and the number of passing people is subtracted from the number of authentications (S7). If the number of passing people is greater than the number of authentications (that is, the value obtained by subtracting the number of passing people from the number of authentications is negative) (S8), an unauthenticated person has passed during unlocking, so an alarm is issued. An alarm notification is instructed to the output device 5 (S9), and the number of authentications and the number of passing people are initialized to 0 (S10). When the number of passing people is within the range of the number of authentications in step S8, the presence / absence of locking of the locking means 22 is confirmed without performing alarm notification and initialization (S11), and if unlocking is in progress, the process returns to step S2, Wait for next authentication.

  On the other hand, when the staying number counted by the staying number counting means 13 is used, the unlocking of the locking means 22 is prohibited depending on the number of staying persons. That is, in order to deter unauthorized entry into the management area D1, one person enters the management area D1, and the lock control means 42 is a person who stays in the detection area A1 when the lock means 22 is locked. If there is not one person, a configuration is adopted in which the locking means 22 is not unlocked even if other conditions for unlocking the locking means 22 are satisfied.

  This will be described more specifically. Now, it is assumed that the lock means 22 is in a locked state. Since a person who is authenticated by the authentication device 3 exists in the detection area A1, if there are a plurality of people in the detection area A1 at the time of authentication by the authentication device 3, a person other than the person to be authenticated can pass through the mouth 21. It becomes possible to enter the management area D1. Therefore, when there are a plurality of persons in the detection area A1 at the time of authentication by the authentication device 3, the lock control means 42 maintains the locked state without unlocking the lock means 22.

  On the other hand, when only one person stays in the detection area A1 at the time of authentication by the authentication device 3, the lock means 22 is unlocked, and the authenticated person is allowed to pass through the mouth 21. Here, the unlocked state of the locking means 22 can be continued until a certain opening time, and the door device 2 is automatically closed after the opening time has elapsed. That is, the locking means 22 is automatically locked. Also, the locking means 22 is automatically locked when the door device 2 is closed before the opening time elapses, and if the door device 2 is not opened after the locking means 22 is unlocked, the locking means 22 is opened when the opening time elapses. 22 is automatically locked.

  Due to the above-described operation, the lock means 22 is unlocked only when one person stays in the detection area A1 when being authenticated by the authentication device 3, and in other cases, the lock means 22 is not unlocked. Therefore, there is a high possibility that unauthorized entry can be prevented.

  In addition, after one person is authenticated and the lock means 22 is unlocked, another person may enter the management area D1, but in that case, in the person monitoring apparatus 1 as in the first embodiment, An alarm notification is instructed to the alarm output device 5 by comparing and determining the number of persons and the number of authentications (in this case, 1).

  By the way, when the lock means 22 is provided as in the present embodiment, the lock means 22 needs to be kept unlocked by the stop means 14. However, since the stop means 14 is provided in the person monitoring device 1, an instruction from the stop means 14 cannot be given directly to the lock control means 42.

  Therefore, when the stop means 14 instructs the alarm output device 5 to stop the alarm notification, the signal processing means 10 detects the detection result in the authentication output means 41 regardless of the number of staying persons counted by the staying person counting means 13. Only the lock control means 42 is instructed to unlock the lock means 22. In response to this instruction, the lock control means 42 unlocks the lock means 22 when authentication by the authentication output means 41 is established. Moreover, the function which closes the door apparatus 2 automatically is also stopped.

  When the stop means 14 instructs the lock output means 5 to stop alarming, it is possible to give the same instruction to the lock control means 42 as when the number of staying persons is one. In this case, since the number of staying persons is considered as one person, the lock control means 42 unlocks the lock means 22 and closes after the door device 2 is opened or has a certain opening time. After a lapse, the door device 2 is closed.

  In other words, if one person is authenticated by the authentication device 3, then the passage 21 can be passed during the open time. That is, when one person is authenticated, a plurality of persons can enter the management area D1. In the case of this operation, when the lock means 22 is unlocked and then locked, the stop state by the stop means 14 is released.

  In the configuration of the present embodiment, when the stop is instructed by the stop unit 14, only one person is authenticated by the authentication device 3, and the lock unit 22 can be unlocked regardless of the number of visitors, Moreover, it is possible to prohibit the alarm output device 5 from issuing an alarm regardless of the number of passing people.

  By the way, as described in the first embodiment, it is desirable that the stopping unit 14 adopts a configuration that selects whether the function is valid or invalid by inputting a control signal from the outside. In the configuration example illustrated in FIG. 6, a configuration in which an instruction is given to the stopping unit 14 using the authentication device 3 is employed. As a configuration for giving an instruction from the authentication device 3 to the stopping unit 14, any of the following configurations can be adopted.

  When the authentication device 3 has only a configuration for reading an ID card, a configuration for enabling the function of the stopping unit 14 when an ID card having a specific ID is used is adopted. In addition, when an instruction to disable after the function of the stopping unit 14 is enabled is required, the function of the stopping unit 14 is disabled when an ID card having a separate specific ID is used.

  Also, a switch for instructing the validity / invalidity of the stop means 14 is attached to the authentication device 3 and the stop means 14 is effective only when the switch is operated within the open time after being authenticated by the ID card or biometric. -It is good also as a structure which can select invalidity. In this configuration, a configuration using an ID card having a specific ID may be employed.

  Furthermore, it is also possible to employ a configuration in which a numeric keypad is provided in the authentication device 3 and the validity / invalidity of the stop means 14 is instructed by inputting a password. If a configuration in which a personal identification number is input instead of the above-described switch is adopted, both authentication and personal identification number are used. Therefore, conditions for causing the stopping means 14 to function increase, and the function of the stopping means 14 is increased. It becomes possible to prevent it being used easily.

  As described above, when the stopping unit 14 is invalid, the unlocking is permitted when only one person is present in the detection area A1, and when the stopping unit 14 is valid, a plurality of persons are present in the detection area A1. Even if it exists, the number of visitors is ignored, and the unlocking is permitted only by authentication by the authentication device 3.

  When the stop means 14 is invalid, only one person is permitted to pass through the passage 21 between the time when the lock means 22 is unlocked and the time when the lock means 22 is locked. In addition, it is allowed that a plurality of persons pass through the opening 21 between the time when the locking means 22 is unlocked and the time when the locking means 22 is locked.

  Therefore, when the stop unit 14 is invalid, it is desirable to prohibit the authentication by the authentication device 3 before the lock unit 22 is locked when the lock unit 22 is unlocked after the authentication by the authentication device 3. That is, by prohibiting authentication after the first person is authenticated, if another person tries to pass through the mouth 21 during unlocking after the first person has passed through the mouth 21, the passage is unauthenticated. Therefore, the alarm output means 5 is driven when a mismatch occurs between the number of passing people and the number of authentications.

  On the other hand, when the stop means 14 is valid, when the authentication device 3 authenticates the first person and the lock means 22 is unlocked, a plurality of people are subsequently authenticated by the authentication device 3 and pass through the mouth 21. The passing operation is enabled, and authentication processing by the authentication device 3 is always performed. That is, even after one person is authenticated by the authentication apparatus 3, the operation of the authentication apparatus 3 is not stopped, and a pulse signal is given from the authentication output means 41 to the person monitoring apparatus 1 for each authentication.

  However, even in the latter control, a configuration in which the authentication (or generation of a pulse signal) by the authentication device 3 is stopped after the first person's authentication may be employed. After the authentication is stopped, the authentication device 3 when the condition (logical sum of passing and locking) of whether the passing of the person is detected by the passing number detecting means 12 or the locking means 22 is locked is established. If it is defined that the authentication according to the above is resumed, it is possible to pass one person at a time while allowing a plurality of persons to pass before the locking means 22 is locked. That is, it is possible to suppress a plurality of persons from receiving authentication in a short time, and to improve the reliability of counting the number of authentications.

  It should be noted that the restart of authentication is not the logical sum of pass and lock, but a condition that either a fixed time for defining the authentication time interval elapses or the lock means 22 is locked (time elapses) It is also possible to establish a logical OR of Even in this operation, the reliability of counting the number of authentications can be improved.

(Embodiment 3)
As described above, if the lock control means 42 ignores the instruction from the person monitoring device 1, the basic operation is that the lock means 22 is authenticated by the authentication device 3 when the lock means 22 is locked. When the door 22 is instructed to be unlocked and the door device 2 is opened and closed, or when a certain opening time has elapsed, the operation automatically returns to the locked state (see FIG. 9). Hereinafter, this operation mode is referred to as “automatic locking mode”. In the automatic locking mode, even when the door device 2 is not opened and closed after the locking means 22 is unlocked, the door device 2 is closed and the locking means 22 is locked when the opening time elapses, so that the locking means 22 is unlocked. The maximum period is only the open time after authentication by the authentication device 3.

  In this embodiment, in addition to the automatic locking mode, as shown in FIG. 10, the lock means 22 is unlocked without being authenticated by the authentication device 3 and the lock control means 42 is locked regardless of whether the door device 2 is opened or closed. The “continuous unlocking mode” for maintaining the unlocking of the means 22 and, as shown in FIG. 11, when the authentication means 3 authenticates when the locking means 22 is in the locked state, the locking means 22 is unlocked, An operation mode of “repetitive unlocking / unlocking mode” for locking the locking means 22 when the means 22 is authenticated when being unlocked is provided. Also, as shown in FIG. 8, an interface 43 for connecting an external device to the access control device 4 is provided, and an operation mode can be selected by an instruction from the external device.

  As described above, since the external device is connected to the access control device 4, an instruction is given to the stop means 14 from the lock control means 42, and the function of the stop means 14 is performed when the automatic lock mode is selected. When the continuous unlocking mode or the repeated locking / unlocking mode is selected, the function of the stopping means 14 is enabled. The configuration and operation are the same as those of the second embodiment except that the operation mode of the lock control means 42 can be selected and the access management device 4 is used as a device for giving an instruction to the stop means 14.

  When the automatic locking mode is selected, the operation is the same as when the function of the stopping unit 14 is disabled in the second embodiment, and the unlocking of the locking unit 22 is restricted by the number of people staying in the detection area A1. The alarm notification by the alarm output device 5 is controlled by comparing and determining the number of authentications by the authentication device 3 and the number of people passing through the passage 21.

  On the other hand, when the continuous unlocking mode is selected, since the locking means 22 is always maintained in the unlocked state, the stop means 14 is instructed to enable the function, and the locking means 22 is activated regardless of the number of visitors. Unlock. Further, when the repeated unlocking / unlocking mode is selected, unlocking and locking are selected by authentication by the authentication device 3, so that the function of the stopping means 14 is enabled during the unlocking period and the locking is performed. During this period, the function of the stopping means 14 is invalidated.

  Since the external device gives an instruction to the lock control means 42 in both the continuous unlocking mode and the repeated locking / unlocking mode, information is given from the signal processing means 10 of the person monitoring device 1 to the lock control means 42. Although it is not necessary, signal processing is performed so that only the detection result of the authentication output means 41 is used regardless of the number of staying persons in the detection area A1, or it is treated as one person regardless of the staying number counted by the staying number counting means 13. Information may be given from the means 10 to the lock control means 42.

  As described above, in the repeated locking / unlocking mode, since the function of the stopping means 14 is invalidated during the locking period, a comparison determination is made between the number of passing people by the passing number counting means 12 and the number of authentications by the authentication device 3, If the lock means 22 is unlocked with a key or thumb turn without using the authentication device 3 or the lock means 22 is opened, an alarm notification by the alarm output device 5 is issued because the visitors in the management area D1 are not authenticated. Will be made.

  In the above example, in the repeated locking / unlocking mode, the configuration for selecting the valid / invalid of the stopping means 14 in conjunction with the locking / unlocking is illustrated, but in the repeated locking / unlocking mode, as in the continuous unlocking mode, It is also possible to always activate the stopping means 14. Other configurations and operations are the same as those of the second embodiment.

(Embodiment 4)
In the configuration described in the third embodiment, a connection line between the lock control unit 42 and the stop unit 14 is necessary to select the validity / invalidity of the function of the stop unit 14 according to the operation mode. There is a problem that the number of wires connected to the device 1 is increased as compared with the configuration of the second embodiment. In this embodiment, as shown in FIG. 12, in order to prevent an increase in the number of wirings compared to the configuration of the second embodiment, while adopting a configuration in which an instruction is given from the access monitoring device 4 to the stopping means 14, A configuration is employed in which an instruction from the entry / exit monitoring apparatus 4 to the stop means 14 is provided using a connection line connecting the authentication output means 41 and the person monitoring apparatus 1.

  That is, the connection line connecting the authentication output means 41 and the person monitoring apparatus 1 is used for two types of information, that is, the number of authentications in the authentication apparatus 3 and the valid / invalid instruction of the stop means 14. In the signal processing means 10 of the monitoring device 1, it is necessary to distinguish which information is the information. As a signal output from the authentication output means 14, a binary signal is used as shown in FIG. Further, when notifying that the authentication apparatus 3 has been authenticated, a pulse signal having a short pulse width is used, and an instruction to the stop means 14 is a continuous signal (referred to as a contact signal). Therefore, the signal processing means 10 measures the duration from the rise of the signal, and the signal falling within the specified time range (within the time Ta1 and time Ta2 in FIG. 13) is regarded as a pulse signal and set separately. A signal that continues beyond the time (Tb in FIG. 13) is regarded as a contact signal. The reason why the upper limit and the lower limit are set for the measurement of the pulse width is to separate it from noise.

  Therefore, as shown in FIG. 13, in the automatic locking mode, when the pulse signal is input, the stopping means 14 is kept in a disabled state, and the unlocking of the locking means 22 by the number of people in the detection area A1 is prohibited. An alarm notification can be made according to the number of people passing by. Further, if the continuous unlocking mode is selected by the external device, the stop means 14 is enabled by outputting the contact signal, and the passage 21 can be passed regardless of the authentication by the authentication device 3. In the repeated locking / unlocking mode, the locking means 22 is switched between locking and unlocking for each authentication by the authentication device 3, so that the stopping means 14 is enabled when unlocking and stopped when locking as described in the third embodiment. A contact signal may be generated so as to invalidate the means 14. In the repetitive unlocking / unlocking mode, when the stopping means 14 is always kept effective regardless of the locking / unlocking of the locking means 22, the operation is the same as in the continuous unlocking mode except that the locking means 22 is unlocked / unlocked for every authentication. become.

  Other configurations and operations of the present embodiment are the same as those of the third embodiment, and the number of wires between the access control device 4 and the person monitoring device 1 is the same as that of the second embodiment, and is apparent from the operation of FIG. In this manner, the contact signal in the continuous unlocking mode can be realized without increasing the cost because a signal for instructing the locking / unlocking of the locking means 22 can be used.

  The configuration of the present embodiment can be used not only for selecting a plurality of operation modes in the lock control means 42 but also for simply selecting the validity / invalidity of the stop means 14.

  In the third and fourth embodiments, since the operation mode of the lock control device 42 is controlled by an external device, the validity / invalidity of the stopping means 14 is also selected. When it is used, it becomes possible to switch the operation mode for each time zone and to select valid / invalid of the stop means 14 in conjunction with the operation mode (see FIG. 13). For example, in a store, etc., a continuous unlocking mode that does not require authentication is used during opening hours when customers are open, and an automatic locking mode is used during closed hours and holidays to automatically prevent unauthorized entry. It becomes possible to switch. That is, the timer device and the computer function as timer means.

1 is a block diagram illustrating a first embodiment. It is a perspective view which shows the usage example same as the above. It is operation | movement explanatory drawing of the imaging means used for the same as the above. It is operation | movement explanatory drawing same as the above. FIG. 6 is a block diagram illustrating a second embodiment. It is a perspective view which shows the usage example same as the above. It is operation | movement explanatory drawing same as the above. FIG. 6 is a block diagram illustrating a third embodiment. It is operation | movement explanatory drawing of automatic locking mode. It is operation | movement explanatory drawing of continuous unlocking mode. It is operation | movement explanatory drawing of the repetition locking / unlocking mode. FIG. 10 is a block diagram illustrating a fourth embodiment. It is operation | movement explanatory drawing same as the above.

Explanation of symbols

1 person monitoring device 2 door device 3 authentication device 4 access control device 5 alarm output device (alarm output means)
DESCRIPTION OF SYMBOLS 10 Signal processing means 11 Imaging means 12 Passing number counting means 13 Staying number counting means 14 Stopping means 21 Entrance 22 Lock means 41 Authentication output means 42 Lock control means A1 Detection area

Claims (8)

  An authentication device that is arranged adjacent to a passageway that requires authentication for passage and that authenticates a person passing through the passageway, and has an image pickup unit that picks up an image of the vicinity of the passageway including the passageway. A person monitoring device for extracting the existence area, the person monitoring device counting the number of passing people passing through the entrance, the number of authentications authenticated by the authentication device and the number of passing people counted by the passing number counting means And a signal processing means for instructing the alarm output means to notify the alarm when the number of authentications and the number of passing persons do not match, and a stop means for selecting whether the instruction of the alarm notification to the alarm output means is valid or invalid A passage management system comprising:   Door device provided with a locking device that is arranged to open and close the opening and that can be locked and unlocked by electric control, and a lock control device that instructs the locking device to lock and unlock using the authentication result by the authentication device A management device is added, and the person monitoring device detects in the space where the authentication device is arranged with respect to the entrance based on the presence area of the person extracted from the image before unlocking the locking means A visitor counting means for counting the number of people staying in the area is provided, and the lock control means unlocks the lock means when the number of staying persons counted by the staying person counting means is within a specified range when the authentication device authenticates. The passage management system according to claim 1, wherein:   The passage management system according to claim 1 or 2, wherein the stop means selects valid or invalid by receiving a control signal.   The passage management system according to claim 3, wherein the stop unit receives a control signal from the authentication device.   The lock control means includes an automatic closing mode for instructing locking when the door device is closed after the unlocking means is unlocked or a certain opening time has elapsed, a continuous opening mode in which the locking means is not unlocked after unlocking the locking means, and a locking means. When the authentication device authenticates in the locked state, the unlocking operation is instructed from the outside, and when the authentication device is authenticated in the unlocked state, the repetitive opening / closing mode instructing the locking is input from the outside. 4. The passage management system according to claim 3, wherein the person monitoring device uses a mode selection signal for selecting a continuous open mode and a repeated open / close mode as the control signal.   The lock control means includes an automatic closing mode for instructing locking when the door device is closed after the unlocking means is unlocked or when a certain opening time has elapsed, a continuous opening mode in which the locking is not performed after the locking means is unlocked, When the authentication device authenticates in the locked state, the unlocking operation is instructed from the outside, and when the authentication device is authenticated in the unlocked state, the repetitive opening / closing mode instructing the locking is input from the outside. Selectable by a mode selection signal, the access control device outputs a pulse signal for each authentication by the authentication device while the automatic close mode is selected, and the continuous open mode or the repeated open / close mode is selected. Authentication signal output means for outputting a contact signal that is turned on while the signal monitoring means in the person monitoring device distinguishes between the pulse signal and the contact signal, while the contact signal is being input. Passing management system according to claim 3, characterized in that to enable the stop means.   7. The passage management system according to claim 6, further comprising timer means for changing each mode of the mode selection signal according to a time schedule.   The imaging unit includes a light source that projects intensity-modulated light, and a distance image generation unit that detects a distance from the phase of the intensity-modulated light detected by each pixel of the imaging unit to an object as a pixel value of each pixel. The signal processing means individually extracts the presence area of the person existing in the field of view based on the pixel value obtained by the distance image generation unit and uses it for counting people by the staying person counting means and the passing person counting means. The passage management system according to any one of claims 1 to 7, wherein

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