JP2021135764A - Entering/leaving management system and entering/leaving management program - Google Patents

Abstract

To provide an entering/leaving management system and an entering/leaving management program, capable of achieving notification of generation of tailgating with a simple configuration.SOLUTION: An entering/leaving management system includes a lock controller, an image analysis device, a receiver and a traffic controller. The image analysis device detects the number of users existing in a monitoring area. The receiver receives, through a user, ID information transmitted from one electrode of a pair of electrodes of a transmitter carried by the user. The traffic controller controls the lock controller on the basis of the received ID information and the number of ID information. When a user in the monitoring area brings a part of the body of the user into contact with the other one of the pair of electrodes and hence the receiver ceases to receive the ID information, the traffic controller determines the number of the users and ID information to be inconsistent to generate warning.SELECTED DRAWING: Figure 1

Description

The present disclosure relates to an entry / exit management system and an entry / exit management program that manages the entry / exit of users.

In the conventional entry / exit management system, when the number of people authenticated using an IC card and an IC card reader and the number of people obtained by analyzing the image in the monitoring area taken by the camera match, the door is opened. Is unlocked. Also, if an unauthenticated passerby enters the room with an authenticated user through an unlocked door, that is, if so-called tailgating occurs, the image from the camera is analyzed rather than the number of authenticated users. The number of people obtained by this will increase. As a result, the occurrence of tailgating is notified to the external device (see, for example, Patent Document 1).

Japanese Unexamined Patent Publication No. 2013-109779

However, a certain amount of processing time is required to analyze the image and grasp the number of people in the monitoring area. Therefore, if an unauthenticated passerby enters the room at a relatively high speed through the unlocked door and passes through the monitoring area in a time shorter than a certain processing time, it is not detected that piggybacking has occurred. There is.

This disclosure is made to solve the above-mentioned problems, and provides an entry / exit management system and an entry / exit management program that can notify the occurrence of tailgating with a simple configuration. The purpose.

The entry / exit management system according to the present disclosure is a lock control device that sets the state of the lock device installed on the door, and a monitoring area when at least one user is present in the monitoring area adjacent to the door. A number detection device that detects the number of users existing in the area, and when at least one user is in the monitoring area, it is transmitted from the electric field communication type transmitter carried by each user. The lock is based on the number of users detected by the receiver and the number of users detecting device, the ID information received by the receiver, and the number of ID information received by the receiver. A traffic control device for controlling the control device is provided, the transmitter has a pair of electrodes, and one of the pair of electrodes of the transmitter carried by at least one user in the monitoring area. When only the electrodes are in close proximity to and facing the body of at least one user and the locking device is set to the unlocked state, at least one user is the other electrode of the pair of electrodes. When the ID information is no longer received by the receiver by bringing a part of the body closer to the traffic control device, the traffic control device states that the number of users detected by the number detection device and the number of ID information do not match. Judge and generate an alarm.
The entry / exit management program according to the present disclosure is a lock control process for setting the state of the lock device installed on the door, and a monitoring area when at least one user is present in the monitoring area adjacent to the door. Number detection process to detect the number of users existing in, when at least one user is in the monitoring area, transmit from the electric field communication type transmitter carried by each user The lock is based on the number of users detected by the reception process and the number detection process for receiving the ID information to be received, the ID information received by the reception process, and the number of ID information received by the reception process. A computer is made to execute a traffic control process for controlling the control process, and in the traffic control process, only one electrode of the pair of electrodes of the transmitter carried by at least one user in the monitoring area is at least one electrode. When close to and facing the body of one user and the locking device is set to the unlocked state, at least one user is also one of the body's electrodes on the other of the pair of electrodes. When the ID information is no longer received by the reception process by bringing the units closer together, it is determined that the number of users detected by the number detection process and the number of ID information do not match, and the computer performs the process of generating an alarm. To execute.

According to the entry / exit management system and the entry / exit management program according to the present disclosure, it is possible to provide an entry / exit management system and an entry / exit management program that can notify the occurrence of tailgating with a simple configuration.

It is a block diagram which shows the entry / exit management system which concerns on Embodiment 1. FIG. It is a figure which shows the example of the image displayed on the display of FIG. It is a model diagram of the electric field communication by the 1st transmitter and the 1st receiver of FIG. This is an equivalent circuit model of electric field communication by the first transmitter and the first receiver of FIG. This is an equivalent circuit model of electric field communication when a part of the body of the first user is brought close to the second electrode of the first transmitter of FIG. It is a sequence diagram for demonstrating the operation of the entry / exit management system of FIG. It is a flowchart which showed the entry / exit management routine executed by the entry / exit management system of FIG. It is a block diagram which shows 1st example of the processing circuit which realizes each function of the entrance / exit management system of Embodiment 1. FIG. It is a block diagram which shows the 2nd example of the processing circuit which realizes each function of the entrance / exit management system of Embodiment 1. FIG.

Hereinafter, embodiments will be described with reference to the drawings.
Embodiment 1.
FIG. 1 is a configuration diagram showing an entry / exit management system according to the first embodiment. As shown in FIG. 1, the entry / exit management system 10 includes a lock control device 20, an image analysis device 30 as a number detection device, a receiver 40, and a traffic control device 50. Further, the traffic control device 50 is communicably connected to the host terminal 70 via the network 60.

The lock control device 20 sets the state of the electric lock 21 as the lock device installed on the door 150 to either the locked state or the unlocked state. When the state of the electric lock 21 is the locked state, the user of the entry / exit management system 10 cannot enter / exit the room. When the electric lock 21 is in the unlocked state, the user can enter the security area or leave the security area. In FIG. 1, the security area is an area on the left side of the door 150.

The image analysis device 30 detects the number of users existing in the monitoring area 200 when at least one user is present in the monitoring area 200. The image analysis device 30 detects a person existing in the monitoring area 200 by using a well-known image recognition technique such as a face recognition technique. The monitoring area 200 is adjacent to the door 150 and includes a first monitoring area 201 and a second monitoring area 202.

The first monitoring area 201 is a part of the area outside the security area. The second monitoring area 202 is a part of the security area.

The image analysis device 30 detects the number of users existing in the first monitoring area 201 and the second monitoring area 202 based on the information from the first camera 31 and the second camera 32. The first camera 31 captures the first monitoring area 201. The second camera 32 captures the second monitoring area 202.

The receiver 40 includes a first receiver 41 and a second receiver 42. The input terminal of the first receiver 41 is connected to the first mat 43. The first mat 43 is laid adjacent to the door 150 in an area outside the security area. The first mat 43 is a receiving electrode of the first receiver 41. The area where the first mat 43 is laid corresponds to the first monitoring area 201.

The input terminal of the second receiver 42 is connected to the second mat 44. The second mat 44 is laid adjacent to the door 150 in the area within the security area. The second mat 44 is a receiving electrode of the second receiver 42. The area where the second mat 44 is laid corresponds to the second monitoring area 202.

The first receiver 41 receives the ID information transmitted from the first transmitter 81.

The transmitter 80 is an electric field communication type transmitter. The transmitter 80 includes a first transmitter 81 and a second transmitter 82. The shape of the first transmitter 81 is a card shape. The first transmitter 81 has a pair of electrodes. The pair of electrodes are arranged on both sides of the first transmitter 81, respectively. When the first user 101 carries the first transmitter 81 in a pocket, a card holder, or the like, only one of the pair of electrodes of the first transmitter 81 is attached to the body of the first user 101. Proximity and opposition.

The first transmitter 81 further includes a storage unit, a transmitter unit, and a battery. The storage unit stores ID information unique to the first transmitter 81. The transmission unit has a carrier wave generation unit, a modulation unit, and an amplification unit. The transmitter modulates the generated carrier wave based on the data including the ID information. The amplification unit outputs the modulated signal to a pair of electrodes.

That is, the first receiver 41 is among the pair of electrodes of the first transmitter 81 carried by the first user 101 when at least the first user 101 is present in the first monitoring area 201. Receives ID information transmitted from one of the electrodes.

The second receiver 42 receives the ID information transmitted from the second transmitter 82.

The shape of the second transmitter 82 is a card shape. The second transmitter 82 has a pair of electrodes. The pair of electrodes are arranged on both sides of the second transmitter 82, respectively. When the second user 102 carries the second transmitter 82 in a pocket, a card holder, or the like, only one of the pair of electrodes of the second transmitter 82 is attached to the body of the second user 102. Proximity and opposition.

The second transmitter 82 further has a storage unit, a transmitter unit, and a battery, similarly to the first transmitter 81. The second receiver 42 is one of a pair of electrodes of the second transmitter 82 carried by the second user 102 when at least the second user 102 is in the second monitoring area 202. Receives ID information transmitted from the electrodes of.

The traffic control device 50 periodically acquires the number of users detected by the image analysis device 30 and the ID information received by the receiver 40. The traffic control device 50 is a lock control device based on the number of users detected by the image analysis device 30, the ID information received by the receiver 40, and the number of ID information received by the receiver 40. 20 is controlled.

FIG. 2 is a diagram showing an example of an image displayed on the display 71. The first monitoring area 201 and the second monitoring area 202 are displayed on the screen 72 of the display 71. That is, the display 71 displays the same area as the area where the user is detected by the image analysis device 30.

Next, the operation of the entry / exit management system 10 will be described separately for each case.

(1) When a third party is not in the monitoring area For example, as shown in FIG. 1, the first user 101 and the second user 102 are on the first mat 43 and the second mat 44, respectively. In this case, the image analysis device 30 detects that the number of people existing in the monitoring area 200 is two.

Further, the first user 101 and the second user 102 carry the first transmitter 81 and the second transmitter 82, respectively. Therefore, communication is established between the first transmitter 81 and the first receiver 41 via the body of the first user 101, and ID information is transmitted from the first transmitter 81 to the first receiver 41. NS. Further, communication is established between the second transmitter 82 and the second receiver 42 via the body of the second user 102, and ID information is transmitted from the second transmitter 82 to the second receiver 42. NS.

When the ID information of the first transmitter 81 and the ID information of the second transmitter 82 match the ID information registered in advance in the traffic control device 50, the number of authenticated IDs is 2. Detected by the traffic control device 50. Therefore, in this case, the number of people existing in the monitoring area 200 and the number of authenticated IDs match. Therefore, the traffic control device 50 controls the lock control device 20 so as to set the state of the electric lock 21 to the unlocked state.

(2) When the electric lock is in the locked state and a third party is present in the monitoring area Next, for example, when the state of the electric lock 21 is in the locked state, the first user 101 and the second user Consider the case where 102 is on the first mat 43 and the second mat 44, respectively, and the third party 103 is present in the first monitoring area 201. Here, the third party 103 is, for example, a person who does not carry a transmitter. Further, even if the third party 103 carries the transmitter, the ID information of the transmitter is not registered in the traffic control device 50.

In this case, the image analysis device 30 detects that the number of people existing in the monitoring area 200 is three. On the other hand, since the third party 103 does not carry the transmitter, the traffic control device 50 detects that the number of authenticated IDs is 2.

Therefore, the number of people existing in the monitoring area 200 and the number of authenticated IDs do not match. In this case, the traffic control device 50 controls the lock control device 20 so as to set the state of the electric lock 21 to the locked state. That is, in this case, the door 150 does not open because the third party 103 is in the monitoring area 200.

(3) When the electric lock is in the unlocked state and a third party is present in the monitoring area Next, for example, when the state of the electric lock 21 is in the unlocked state, the first user 101 and the second user 101 and the second. Consider the case where the user 102 is on the first mat 43 and the second mat 44, respectively, and the third party 103 exists in the monitoring area 200.

In this case, the image analysis device 30 detects that the number of people existing in the monitoring area 200 is three. On the other hand, since the third party 103 does not carry the transmitter, the traffic control device 50 detects that the number of authenticated IDs is 2.

Therefore, the number of people existing in the monitoring area 200 and the number of authenticated IDs do not match. In this case, the traffic control device 50 determines that tailgating has occurred and issues an alarm.

(4) When a third party runs through the monitoring area and is not reflected in the captured image Next, for example, when the electric lock 21 is in the unlocked state, the first user 101 and the second user 102 However, consider the case where the third mat 103 is on the first mat 43 and the second mat 44, respectively, and the third party 103 runs through the monitoring area 200 and enters the room. Further, it is assumed that the third party 103 is not photographed by either the first camera 31 or the second camera 32 because the third party 103 runs through the monitoring area 200.

In this case, the image analysis device 30 detects that the number of people existing in the monitoring area 200 is two. On the other hand, when the number of authenticated IDs is 2, the traffic control device 50 detects it. Therefore, the number of people existing in the monitoring area 200 and the number of authenticated IDs match. Therefore, the traffic control device 50 does not determine that tailgating has occurred.

However, at this time, at least one of the first user 101 and the second user 102 notices the existence of the third party 103, and also on the other electrode of the pair of electrodes of the transmitter. Assume that at least one user's body part is brought closer.

In this case, the ID information transmitted from the transmitter will not be received by the receiver 40 for the reason described later. Therefore, the number of ID information detected by the traffic control device 50 is reduced by at least one. As a result, the number of users detected by the image analysis device 30 and the number of ID information do not match.

Therefore, in this case, the traffic control device 50 determines that the number of users detected by the image analysis device 30 and the number of ID information do not match, and generates an alarm.

Next, referring to FIGS. 3, 4 and 5, the ID information is obtained by the receiver 40 by bringing a part of the user's body close to the other electrode of the pair of electrodes of the transmitter 80. The principle of not being received will be explained.

FIG. 3 is a model diagram of electric field communication by the first transmitter 81 and the first receiver 41. The first transmitter 81 has a first electrode 81a and a second electrode 81b as a pair of electrodes. The first electrode 81a, which is one of the pair of electrodes, is close to and faces the body of the first user 101. The first electrode 81a is electrostatically coupled to a part of the body of the first user 101. The first electrode 81a is a transmission electrode for transmitting data including ID information.

The second electrode 81b, which is the other electrode of the pair of electrodes, is provided on the surface opposite to the surface on which the first electrode 81a is provided. That is, the second electrode 81b faces the side opposite to the first user 101. The second electrode 81b is electrostatically coupled to ground GND. The second electrode 81b is a reference electrode that determines the reference potential of the first transmitter 81.

The first mat 43 faces a part of the body of the first user 101. The first mat 43 is electrostatically coupled to a part of the body of the first user 101. The third electrode 41a is electrostatically coupled to the ground GND. Hereinafter, the body of the first user 101 is also simply referred to as a human body.

When an electric signal corresponding to the transmission data is applied between the pair of electrodes, an electric field is generated around the first transmitter 81.

The electric field generated from the first electrode 81a causes a charge distribution on the surface of the human body. Furthermore, this charge distribution also generates an electric field in the vicinity of the human body. In reality, as shown in FIG. 3, the first transmitter 81, the human body, and the ground GND are electrostatically coupled to each other by an electric field to form an electric field communication network.

An electric field is also generated between the first mat 43 and the human body and between the third electrode 41a and the ground GND. The first receiver 41 receives the data transmitted from the first transmitter 81 by detecting the voltage generated between the first mat 43 and the ground GND.

FIG. 4 is an equivalent circuit model of electric field communication by the first transmitter 81 and the first receiver 41. As shown in FIG. 4, the capacitance formed between the first electrode 81a and the human body and the capacitance formed between the second electrode 81b and the ground GND are defined as C1 and C2, respectively. .. The capacitance formed between the first mat 43 and the human body and the capacitance formed between the third electrode 41a and the ground GND are referred to as C3 and C4, respectively.

Further, a stray capacitance Cp is formed between the human body and the ground GND. This stray capacitance Cp serves as a path through which the leak current IL flows.

When the relationship shown in the following equation (1) is established for the four capacitances C1, C2, C3 and C4, in other words, the bridge circuit composed of the four capacitances C1 to C4 is in a balanced state. When becomes, the leak current IL is minimized. The relationship shown in Eq. (1) is also called an equilibrium condition.

C1: C2 = C3: C4 ... (1)

In order to reduce the leakage current IL as much as possible, the first transmitter 81, the first mat 43 and the first receiver 41 are designed to satisfy the equilibrium condition represented by the above equation (1) as much as possible.

When the first transmitter 81 is carried by the first user, the distance between the first electrode 81a and the human body is shorter than the distance between the second electrode 81b and the ground GND. Therefore, the capacitance C1 is larger than the capacitance C2, and the capacitance C3 is larger than the capacitance C4.

Similarly, the second transmitter 82, the second mat 44, and the second receiver 42 are also designed to satisfy the equilibrium condition represented by the above equation (1) as much as possible.

FIG. 5 is an equivalent circuit model of electric field communication when a part of the body of the first user 101 is brought close to the second electrode 81b of the first transmitter 81. When a part of the body of the first user 101 is brought close to the second electrode 81b, a capacitance C5 is formed between the second electrode 81b and the human body. If the areas of the first electrode 81a and the second electrode 82b are equal and the distance between the first electrode 81a and the human body is equal to the distance between the second electrode 81b and the human body, the capacitance C5 is static. It is almost equal to the electric capacity C1.

In this case, the capacitance C5 is larger than the capacitance C2. Therefore, the equilibrium condition represented by the above equation (1) is no longer satisfied, and a large amount of leakage current IL flows. Therefore, since the electric charge generated in the first mat 43 is reduced, the received signal level of the first receiver 41 is lowered.

Further, the phase of the electric field generated from the first electrode 81a and the phase of the electric field generated from the second electrode 81b are different from each other by 180 °. Therefore, the electric field generated from the first electrode 81a and the electric field generated from the second electrode 81b cancel each other out via the human body, so that the transmission signal level of the first transmitter 81 decreases.

In this way, when the first user 101 brings a part of the body of the first user 101 closer to the other electrode of the pair of electrodes, the received signal level of the first receiver 41 is lowered and the reception signal level is lowered. , The transmission signal level of the first transmitter 81 is lowered. As a result, the ID information is not received by the first receiver 41.

As a result, the number of ID information detected by the traffic control device 50 is reduced by at least one. Therefore, the number of users detected by the image analysis device 30 and the number of ID information do not match.

FIG. 6 is a sequence diagram for explaining the basic operation of the entry / exit management system of FIG. As shown in FIG. 6, when the first receiver 41 receives the ID information from the first transmitter 81, the first receiver 41 transmits the ID information to the passage control device 50. Similarly, when the second receiver 42 receives the ID information from the second transmitter 82, the second receiver 42 transmits the ID information to the passage control device 50.

The traffic control device 50 detects the number of authenticated IDs in the received ID information. When the image analysis device 30 detects the number of people in the monitoring area 200 based on the information from the first camera 31 and the second camera 32, the image analysis device 30 transmits the number of people in the monitoring area 200 to the passage control device 50. The traffic control device 50 compares the number of authenticated IDs with the number of people in the monitoring area 200.

When the number of authenticated IDs and the number of people in the monitoring area 200 match, the traffic control device 50 transmits an unlock command to the lock control device 20. The lock control device 20 sets the state of the electric lock 21 to the unlocked state, and transmits the lock state command to the passage control device 50.

FIG. 7 is a flowchart showing an entry / exit management routine executed by the traffic control device 50. The routine of FIG. 7 is started, for example, by activating the traffic control device 50, and is executed every time a certain period of time elapses. The fixed time is, for example, several hundred milliseconds.

When the traffic control device 50 starts the routine of FIG. 7, first, in step S105, the number of authenticated IDs is acquired. ID authentication is performed by comparing the ID information received by the first receiver 41 and the second receiver 42 with the ID information registered in advance in the traffic control device 50.

Next, in step S110, the traffic control device 50 acquires the number of people in the monitoring area 200 from the image analysis device 30.

In step S115, the traffic control device 50 determines whether or not the number of authenticated IDs and the number of people in the monitoring area 200 match.

When the number of authenticated IDs and the number of people in the monitoring area 200 match, the traffic control device 50 determines in step S120 whether or not the number of people in the monitoring area 200 is one or more.

When the number of people in the monitoring area 200 is one or more, the traffic control device 50 causes the lock control device 20 to execute the unlocking process in step S125, and temporarily ends this routine. That is, at the present time, when the electric lock 21 is in the locked state, the state of the electric lock 21 is changed from the locked state to the unlocked state. Therefore, the user can enter and leave the room through the opened door 150. Further, at the present time, when the electric lock 21 is in the unlocked state, the unlocked state of the electric lock 21 is maintained.

On the other hand, in step S120, when the number of people in the monitoring area 200 is less than one, that is, when there is no one in the monitoring area 200, the traffic control device 50 locks the lock control device 20 in step S130. Execute and terminate this routine once. That is, at the present time, when the electric lock 21 is in the locked state, the locked state of the electric lock 21 is maintained. Further, at present, when the electric lock 21 is in the unlocked state, the state of the electric lock 21 is changed from the unlocked state to the locked state.

Here, for example, when the electric lock 21 is in the unlocked state, when the first user 101 notices the tailgating and presses the second electrode 81b of the first transmitter 81 by hand, it is authenticated. The number of IDs and the number of people in the monitoring area 200 do not match.

Therefore, in step S135, the traffic control device 50 determines whether or not the electric lock 21 is currently locked. When the electric lock 21 is locked, the traffic control device 50 causes the lock control device 20 to maintain the locked state of the electric lock 21 in step S140.

On the other hand, when the electric lock 21 is unlocked, that is, when it is in the unlocked state, the traffic control device 50 issues an alarm in step S145. The generated alarm is notified to the upper terminal 70 via the network 60.

As described above, the entry / exit management method of the first embodiment includes a lock control step, a number of people detection step, a reception step, and a traffic control step. The lock control step is a step of setting the state of the electric lock 21 installed on the door 150. The number detection step is a step of detecting the number of users existing in the monitoring area 200 when at least one user is present in the monitoring area 200 adjacent to the door 150. The reception step is a step of receiving ID information transmitted from the electric field communication type transmitter 80 carried by each user when at least one user is present in the monitoring area 200. The traffic control step controls the lock control step based on the number of users detected by the number detection step, the ID information received by the reception step, and the number of ID information received by the reception step. Is.

When the following two conditions are satisfied at the same time, if at least one user brings a part of the body close to the other electrode of the pair of electrodes, the ID information will not be received by the reception step.
(1) Only one of the pair of electrodes of the transmitter 80 carried by at least one user in the monitoring area 200 is close to and faces the body of at least one user. ..
(2) The electric lock 21 is set to the unlocked state.
At this time, the traffic control step determines that the number of users detected by the number detection step and the number of ID information do not match, and generates an alarm.

Further, the entry / exit management program of the first embodiment is a program that causes a computer to execute the above entry / exit management method.

That is, the entry / exit management program is a program that causes a computer to execute lock control processing, number detection processing, reception processing, and traffic control processing. The lock control process sets the state of the electric lock 21 installed on the door 150. The number detection process detects the number of users existing in the monitoring area 200 when at least one user is present in the monitoring area 200 adjacent to the door 150. The reception process receives the ID information transmitted from the electric field communication type transmitter 80 carried by each user when at least one user is present in the monitoring area 200. The traffic control process controls the lock control process based on the number of users detected by the number detection process, the ID information received by the reception process, and the number of ID information received by the reception process.

When the following two conditions are satisfied at the same time, if at least one user brings a part of the body close to the other electrode of the pair of electrodes, the ID information will not be received by the reception process.
(1) Only one of the pair of electrodes of the transmitter 80 carried by at least one user in the monitoring area 200 is close to and faces the body of at least one user. ..
(2) The electric lock 21 is set to the unlocked state.
At this time, the entry / exit management program determines that the number of users detected by the number detection process and the number of ID information do not match, and causes the computer to execute the process of generating an alarm as a passage control process.

As described above, according to the entry / exit management system 10 and the entry / exit management program of the first embodiment, it is possible to notify the occurrence of tailgating with a simple configuration.

Even if a device for notifying the occurrence of tailgating is installed in the monitoring area 200, if the user is using a wheelchair, the user may use the device for notifying the occurrence of tailgating. It can be difficult to operate. Therefore, according to the entry / exit management system 10 and the entry / exit management program of the first embodiment, it is effective even when the user is using a wheelchair.

Further, according to the entry / exit management system 10 and the entry / exit management program of the first embodiment, an alarm can be generated even when the user becomes unwell while entering / exiting the room.

Further, the number of people detection device includes a first camera 31 and a second camera that capture the monitoring area 200. Then, the number of people detection device detects the number of people in the monitoring area 200 by using the image recognition technique based on the information from the first camera 31 and the second camera 32. Therefore, the number of people in the monitoring area 200 can be detected more accurately.

The first camera 31 and the second camera 32 were installed so as to photograph the monitoring area 200 in the horizontal direction, but the monitoring area 200 was photographed downward from above the first mat 43 and the second mat 44, respectively. It may be installed so as to. In this case, a person authentication technique different from the face recognition technique may be used.

Further, in the first embodiment, the number of people detection device includes a camera for photographing the monitoring area 200, but the number of people detection device may include a motion sensor including the monitoring area 200 in the detection range. .. In this case, the number of people detection device detects the number of people in the monitoring area 200 based on the information from the motion sensor. Therefore, the number of people in the monitoring area 200 can be detected more accurately.

Further, an infrared sensor, a millimeter wave radar, or the like may be used as the sensor of the number of people detection device.

Further, in the entry / exit management system 10 of the first embodiment, the first mat 43 and the second mat 44 are used as the receiving electrodes of the receiver 40, but the receiving electrodes are in the door 150 and the monitoring area 200. It may be installed on the wall surface. In short, the receiving electrode may be installed at a position where the receiver 40 and the first transmitter 81 and the second transmitter 82 can communicate with each other via the human body.

Further, in the entry / exit management system 10 of the first embodiment, when the first user 101 notices the tailgating of the third party 103, the first user 101 is connected to the second electrode 81b of the first transmitter 81. The alarm was generated by bringing a part of the body closer. However, even if a person other than the first user 101 brings a part of the person's body close to the second electrode 81b, the ID information from the first transmitter 81 will not be received by the receiving device.

For example, suppose that another user next to the first user 101 in the monitoring area 200 notices the tailgating of the third party 103. At this time, even if another user brings his / her hand close to the second electrode 81b of the first transmitter 81, the ID information from the first transmitter 81 will not be received by the receiving device.

As a result, the number of users detected by the image analysis device 30 and the number of ID information do not match, so that the traffic control device 50 generates an alarm. As described above, the person who brings a part of the body close to the other electrode of the pair of electrodes of the transmitter does not necessarily have to be the user who carries the transmitter.

Further, in the entry / exit management system 10 of the first embodiment, the monitoring area 200 is displayed by the display 71, but the display 71 is not always necessary because the image analysis device 30 detects the number of people in the monitoring area 200. is not it.

Further, in the entry / exit management system 10 of the first embodiment, the ID information is registered in the traffic control device 50, but it may be registered in the upper terminal. In this case, the traffic control device 50 may refer to the ID information registered in the higher-level terminal at the time of ID authentication.

Further, each function of the lock control device 20, the image analysis device 30, the receiver 40, and the traffic control device 50 of the entry / exit control system 10 of the first embodiment is realized by a processing circuit. FIG. 8 is a configuration diagram showing a first example of a processing circuit that realizes each function of the lock control device 20, the image analysis device 30, the receiver 40, and the traffic control device 50 of the entry / exit control system 10 of the first embodiment. Is. The processing circuit 300 of the first example is dedicated hardware.

Further, the processing circuit 300 includes, for example, a single circuit, a composite circuit, a programmed processor, a parallel programmed processor, an ASIC (Application Specific Integrated Circuit), an FPGA (Field Programmable Gate Array), or a combination thereof. Applicable.

Further, FIG. 9 shows a second example of a processing circuit that realizes each function of the lock control device 20, the image analysis device 30, the receiver 40, and the traffic control device 50 of the entry / exit control system 10 of the first embodiment. It is a block diagram. The processing circuit 400 of the second example includes a processor 401 and a memory 402.

In the processing circuit 400, each function of the lock control device 20, the image analysis device 30, the receiver 40, and the traffic control device 50 of the entry / exit control system 10 is realized by software, firmware, or a combination of software and firmware. The software and firmware are written as a program and stored in the memory 402. The processor 401 realizes the function by reading and executing the program stored in the memory 402.

It can be said that the program stored in the memory 402 causes the computer to execute the procedure or method of each part described above. Here, the memory 402 is, for example, a RAM (Random Access Memory), a ROM (Read Only Memory), a flash memory, an EPROM (Erasable Programmable Read Online Memory), an EPROM (Electrically Large Memory), etc. A sexual or volatile semiconductor memory. Further, magnetic disks, flexible disks, optical disks, compact disks, mini disks, DVDs, and the like also fall under the memory 402.

The functions of the control unit described above may be realized by a part of dedicated hardware and a part by software or firmware.

As described above, the processing circuit can realize the function of the control unit described above by hardware, software, firmware, or a combination thereof.

10 Entry / exit control system, 20 lock control device, 30 image analysis device (number detection device), 31 1st camera (camera), 32 2nd camera (camera), 40 receiver, 50 traffic control device, 80 transmitter, 81a, 81b Pair of electrodes, 101 first user (user), 102 second user (user), 150 doors, 200 monitoring area.

Claims (4)

Lock control device that sets the state of the lock device installed on the door,
A number detection device that detects the number of users existing in the monitoring area when at least one user is present in the monitoring area adjacent to the door.
When the at least one user is present in the monitoring area, a receiver that receives ID information transmitted from an electric field communication type transmitter carried by each user, and the number of people detection. Traffic control that controls the lock control device based on the number of users detected by the device, the ID information received by the receiver, and the number of ID information received by the receiver. Equipped with equipment
The transmitter has a pair of electrodes and
Only one of the pair of electrodes of the transmitter carried by the at least one user in the monitoring area is close to and faces the body of the at least one user. When the locking device is set to the unlocked state, the receiver allows the at least one user to bring a part of the body close to the other electrode of the pair of electrodes. When the ID information is no longer received,
The traffic control device is an entry / exit management system that determines that the number of users detected by the number detection device and the number of ID information do not match, and generates an alarm. The number detection device includes a camera that captures the surveillance area.
The entry / exit management system according to claim 1, wherein the number of people in the monitoring area is detected based on the information from the camera. The number detection device includes a motion sensor that includes the monitoring area in the detection range.
The entry / exit management system according to claim 1, wherein the number of people in the monitoring area is detected based on the information from the motion sensor. Lock control process that sets the state of the lock device installed on the door,
A number detection process for detecting the number of users existing in the monitoring area when at least one user is present in the monitoring area adjacent to the door.
When the at least one user is present in the monitoring area, the reception process for receiving the ID information transmitted from the electric field communication type transmitter carried by each user, and the number detection. Traffic control that controls the lock control process based on the number of users detected by the process, the ID information received by the reception process, and the number of ID information received by the reception process. Let the computer do the work
In the traffic control process,
Only one of the pair of electrodes of the transmitter carried by the at least one user in the monitoring area is close to and faces the body of the at least one user. When the locking device is set to the unlocked state, the reception process causes the at least one user to bring a part of the body close to the other electrode of the pair of electrodes. When the ID information is no longer received,
An entry / exit management program that determines that the number of users detected by the number detection process and the number of ID information do not match, and causes the computer to execute a process of generating an alarm.

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