JP2009015578A - Security system and area monitoring method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To confirm whether or not a person in a vehicle is a person who is permitted to enter an entry restriction area under such circumstances that a vehicle carrying a person passes an area having the entry restriction area. <P>SOLUTION: This security system is provided with: an in-vehicle unit 10 loaded on a vehicle 7 for acquiring person ID information from a personal identification medium of a person who gets on the vehicle 7, and for transmitting a radio signal including the person ID information and in-vehicle unit ID information; and a monitoring device 26 installed in an area 1 having a zone 2 whose entry is restricted for receiving the radio signal from the in-vehicle unit 10, and for operating warning display. The monitoring device 26 is provided with: a database for storing the in-vehicle unit ID information of the in-vehicle unit 10 of the vehicle 7 which is permitted to enter the area 1 and the person ID information of the person who is permitted to enter the zone 2; and a retrieval processing part for outputting data for warning display when either the result of the collation of the in-vehicle unit ID information included in the radio signal with the in-vehicle unit ID information in the database or the result of the collation of the person ID information included in the radio signal with the person ID information in the database is not established. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention, for example, for a vehicle or a ship entering an area having a restricted area, checks whether the person on the vehicle or the ship is a person permitted to enter the area. The present invention relates to a security system and an area monitoring method used at the time.

  In a facility with a high security level, the area where people enter can be different. A security guard visually confirms the ID card in which the name of the area permitted to enter is specified, and the entry permission is confirmed.

  When many employees commute to the premises with such facilities on a microbus, etc., even if a suspicious person gets caught in the microbus, the security guard can only identify by visually checking the ID card There is no.

  When a vehicle enters a facility, the vehicle entering the vehicle must be permitted, and all persons riding in the vehicle must also be permitted.

  Conventionally, when a microbus carrying a plurality of people passes through a security gate, there is a risk of allowing a suspicious person to enter.

  In addition, if there is a sea or river near a facility with a high security level, and ships can navigate the sea or river, only ships that have been given permission to travel can be allowed to pass. It is possible that a ship without a ship cannot navigate.

  Even in this case, it is necessary that the ship is a ship permitted to pass and that the person operating the ship is a permitted person.

  From these situations, it is possible to determine whether the vehicle or ship is a vehicle permitted to pass or a ship permitted to sail, and whether the person on board or boarding is a permitted person. It is necessary to realize a possible security system.

  In addition, a gate check may be performed using an ID card and a sensor that emits radio waves such as an RFID (Radio Frequency IDentification) card. In this case, since the reach of the radio wave is narrow, the ID card is detected only around the sensor. When the detection is notified, it is understood that there is an RFID card around the sensor, but when a plurality of RFID cards are detected, the system can identify which RFID card is the target RFID card. difficult.

  In a place where there are a plurality of persons, an administrator can identify a suspicious person who does not have an ID card in a situation where a person who has an ID card and a suspicious person who does not have an ID card are mixed. It is difficult to identify easily.

Conventionally, an apparatus has been proposed that visualizes the position of a wave source of an incoming radio wave so that an observer can easily recognize it (see Patent Document 1). The wave source visualization device described in Patent Document 1 estimates a mobile phone stored in a human inner pocket as a radio wave source, and displays the estimated wave source and a human image taken by a photographing unit on a display unit. To do.
JP 2005-24439 A

  However, when a plurality of people are on the vehicle, it cannot be easily confirmed whether or not these people are permitted to enter the restricted area. For example, a person other than an employee, such as a party authorized to enter the security gate, may pass through the security gate. After a microbus stops at a certain place in the area and a person gets on and off, the microbus may move to another place in the area. Therefore, there are cases where the vehicle approaches an area in which the entrance of people is strictly controlled with a plurality of people on board, and in this case, high security cannot be maintained.

  In addition, when a ship carrying multiple people sails in the sea or river near a facility with a high security level, or in a sea or water area where access is restricted, It is not possible to easily determine whether a person is permitted to travel.

  In the above-described conventional technology, it is impossible to collectively check ID information of a person who is on the vehicle or a person who is on the ship.

  Therefore, in view of the above problems, the present invention allows a person on the vehicle to enter this area in a situation where the vehicle carrying the person tries to pass through an area having a restricted access area. It is an object of the present invention to provide a security system and an area monitoring method that can confirm whether or not a person is present.

  In order to solve such a problem, according to one aspect of the present invention, the person ID information of the person is acquired from a personal identification medium that is mounted on the vehicle and carried by the person who rides the vehicle. An on-vehicle device that is provided in an on-vehicle device that transmits a radio signal including information and the on-vehicle device ID information of the on-vehicle device itself, and an area where access is restricted, and is mounted on a vehicle that enters this area A monitoring device that receives a radio signal from the vehicle and displays an alarm display, and this monitoring device has the in-vehicle device ID information of the vehicle-mounted device mounted on the vehicle permitted to enter the area, and A database that stores person ID information of persons permitted to enter, a receiving unit that receives a radio signal transmitted from the on-vehicle device, and on-vehicle device ID information included in the radio signal received by the receiving unit And the database Any one of the result of collating the vehicle-mounted device ID information stored in the information and the result of collating the person ID information included in the wireless signal with the person ID information stored in the database is not established. There is provided a security system including a search processing unit that outputs data for displaying an alarm in some cases.

  According to another aspect of the present invention, the vehicle-mounted device mounted on the vehicle has the person ID information stored in the personal identification medium carried by the person riding on the vehicle and the vehicle-mounted device itself. A wireless signal sent from a vehicle-mounted device mounted on a vehicle that enters the area, where a monitoring device provided in an area having an area where access is restricted, and a step of sending a wireless signal including ID information And the monitoring device is provided with on-board unit ID information of an on-board unit mounted on a vehicle permitted to enter the area and person ID information of a person permitted to enter the area. Searching a database to be stored, outputting a first result obtained by comparing the OBE ID information included in the received wireless signal with the OBE ID information stored in the database; and Searching the database and outputting a second result of collating the person ID information included in the received wireless signal with the person ID information stored in the database; and And a step of displaying an alarm when either one of the second result and the second result is not established is provided.

  According to the present invention, it is easily determined whether or not a person on a vehicle is a person permitted to enter a restricted area.

  Hereinafter, a security system and an area monitoring method according to an embodiment of the present invention will be described with reference to FIGS. In the drawings, the same portions are denoted by the same reference numerals, and redundant description is omitted.

(First embodiment)
FIG. 1 is a diagram showing an arrangement example of various facilities in an area to which the security system according to the first embodiment of the present invention is applied. Area 1 is a site, and has areas 2, 3, and 4 with different security levels for entering people. The area 2 is an area in which the highest security level is set among these areas 2 to 4, and the entry of people is strictly controlled. 5 is a security gate as an outside gate, and 6 is a building. A vehicle such as a microbus 7 enters the area 1 through the security gate 5. The microbus 7 stops in the areas 3 and 4 and the building 6 and moves to the area 2 after getting in and out of people.

  Inside the area 2, a security gate 8 and a guard room 9 are installed. A vehicle-mounted device 10 is mounted on the microbus 7. This in-vehicle device 10 acquires the person ID information of this person from an ID card possessed by the person on the microbus 7, and transmits a radio signal including this person ID information and the in-vehicle device ID information of the on-vehicle device itself. is there. The security gate 8 is provided with a question signal transmission unit 12 that constantly transmits a radio signal to the transmission / reception antenna unit 11 of the vehicle-mounted device 10. A radio transmitter is used for the interrogation signal transmission unit 12.

  FIG. 2 is a block diagram of the vehicle-mounted device 10. The in-vehicle device 10 includes a transmission unit 14 that transmits radio waves via a transmission antenna 13 to an ID card held by the person on the microbus 7 over the on-vehicle device 10, and a person ID of the ID card transmitted from the ID card. A receiving unit 16 that receives a radio wave including information via the receiving antenna 15; a process of writing the person ID information received by the receiving unit 16 into the person ID storage unit 17; and the transmission unit 14 and the receiving unit 16 A control unit 18 that performs transmission / reception control and control of the transmission / reception antenna unit 11 is provided.

  FIG. 3 is a diagram illustrating an example of an ID card carried by a passenger. The ID card 19 is a personal identification medium, and for example, an RFID card is used. The ID card 19 includes a receiving unit 21 that receives radio waves from the vehicle-mounted device 10 via the receiving antenna 20, an ID recording unit 22 in which person ID information is written, and a process of reading the person ID information from the ID recording unit 22. And a control unit 23 that controls transmission / reception and a transmission unit 25 that transmits a radio signal including the person ID information read by the control unit 23 from the transmission antenna 24. In the ID recording unit 22, person ID information such as the employee number of each employee and the identification number of the related person permitted to enter is written.

  Thereby, the ID card 19 reads the person ID information by the electromotive force induced by the radio wave from the vehicle-mounted device 10, and transmits a radio signal including the read person ID information to the vehicle-mounted device 10.

  In the guard room 9 of FIG. 1, a monitoring device 26 is provided. FIG. 4 is a block diagram of the monitoring device 26. The monitoring device 26 includes a receiving unit 28 that receives a radio signal transmitted from the vehicle-mounted device 10 via the receiving antenna 27, and an ID demodulating unit 29 that demodulates ID information from the radio signal received by the receiving unit 28. A database (DB) 30 for storing the vehicle-mounted device ID information of the vehicle-mounted device 10 mounted on the microbus 7 permitted to enter the area 1 and the person ID information of the person permitted to enter the area 2; A database search unit (DB search unit) 31 that searches the database 30 based on the ID information demodulated by the ID demodulation unit 29, and a display unit 32 that displays the search results searched by the DB search unit 31. ing.

  In addition, the DB search unit 31 and the display unit 32 collate the vehicle-mounted device ID information included in the wireless signal received by the receiving unit 28 with the vehicle-mounted device ID information stored in the database 30, and the wireless A function as a search processing unit that outputs data for displaying an alarm when either one of the result obtained by comparing the person ID information included in the signal and the person ID information stored in the database 30 is not established. Realized.

  FIG. 5 is a flowchart for explaining the area monitoring method according to the present embodiment. In the area monitoring method according to the present embodiment, the person on board holds the ID card over the vehicle-mounted device 10 so that the vehicle-mounted device 10 registers the person ID information of the ID card (step A1). When a plurality of people get on the microbus 7, the vehicle-mounted device 10 collects the person ID information of all the people who are going to get on.

  The on-vehicle device 10 transmits a radio signal including the person ID information of this person and the on-vehicle device ID information stored in the ID card (step A2). The monitoring device 26 receives the radio signal transmitted from the vehicle-mounted device 10 mounted on the microbus 7 entering the area 1 (step A3). The monitoring device 26 searches the database 30 that stores the vehicle-mounted device ID information of the vehicle-mounted device 10 and the person ID information of the person permitted to enter the zone 2 (step A4).

  The monitoring device 26 outputs a result (first result) obtained by collating the vehicle-mounted device ID information included in the received wireless signal with the vehicle-mounted device ID information stored in the database 30 (step A5). Furthermore, the monitoring device 26 searches the database 30 and outputs a result (second result) obtained by collating the person ID information included in the received wireless signal with the person ID information stored in the database 30 (step A6). ), It is determined whether or not each of the first result and the second result is established (step A7). In this step A7, when the monitoring device 26 determines that two collation results have been established, the YES route is displayed through the YES route (step A8).

  In step A7, when the monitoring device 26 determines that one of the two matching results is not established or that both of the matching results are not established, the alarm display is performed through the NO route. (Step A9).

  The operation of the security system according to this embodiment having such a configuration will be described. Employees boarding the microbus 7 have an ID card, and ID cards for temporarily permitting entry into the area 1 are also issued to those who are permitted to enter the area 1. Yes.

  When an employee or a person concerned who is going to enter the area 1 gets on the microbus 7 outside the security gate 5, the employee or person concerned is placed on the vehicle-mounted device 10 provided near the door of the microbus 7. Hold your ID card. When the person holds the ID card over the reader, the vehicle-mounted device 10 identifies that it is a legitimate ID card or a legitimately issued ID card, and stores the ID information recorded in the ID card in the ID storage unit 17. sign up.

  When this registration is normally performed, it is possible to proceed to the back of the area 1 while getting on the microbus 7. For those who are not registered normally, the vehicle-mounted device 10 issues a warning that the ID information is not correct. Thus, the suspicious person is checked by the driver of the microbus 7 and the boarding is refused. Therefore, the suspicious person cannot enter the area 1. When the registration process by the vehicle-mounted device 10 is completed, the person ID information of all persons on the microbus 7 is accumulated in the vehicle-mounted device 10.

  After the person ID information of all persons on board is registered in the vehicle-mounted device 10, the microbus 7 carrying the person passes through the security gate 5 and enters the area 1. After passing through the security gate 5 which is the first outer gate, the microbus 7 stops in various buildings and areas 3 and 4 and moves on to and from the area 2, and then moves to the area 2 which is the final destination. . The microbus 7 stops in front of the security gate 8 provided at the entrance of the area 2 where there is a facility with a high security level. The question signal transmitter / receiver 12 transmits a question signal so that the radio wave reaches a predetermined distance from the entrance.

  When the in-vehicle device 10 receives the interrogation signal, the on-vehicle device 10 sends a wireless signal including vehicle ID information for identifying the microbus 7 and person ID information of all persons on board to the monitoring device 26.

  The monitoring device 26 receives the radio wave from the vehicle-mounted device 10, and acquires the ID information of the vehicle-mounted device 10 and the ID information of the person on board by the ID demodulation unit 29. The DB search unit 31 compares the acquired ID information with each ID information registered in advance in the database 30 and collates whether all persons on the microbus 7 are permitted persons. If the DB search unit 31 determines that the person is not authorized, the display unit 32 issues an alarm. As a result, the guard is notified that an unauthorized person is on the microbus 7.

  Thus, according to the security system according to the present embodiment, it is possible to prevent unauthorized persons from entering the restricted area 2. A person with an ID card that passes through the outside gate enters the wide area 1 that can be entered by the microbus 7 and then enters the microbus 7 in the area 2 after giving permission to the microbus 7 in the area 2. The security can be improved by checking the ID of each person.

  The period and time period during which entry into Zone 2 is restricted may vary depending on the progress of the project in Zone 2. There are also changes in the number of personnel entering the facilities in Area 2 and the number of personnel. In such a case, in the prior art, it is not sufficient to check only the security gate 5 provided outside the wide area 1. By simply performing the check at the first outside gate, it is not possible to take effective measures against the change of the person who gets on the microbus 7 due to the person getting on and off during the area 2 which is the object of strict management.

  On the other hand, according to the security system according to the present embodiment, the person who gets on the microbus 7 gets on the access restriction to the specific area 2 for the person on the microbus 7 that enters from the outside gate. In this state, the security gate 8 provided at the entrance of the area 2 can be managed.

  Therefore, when an employee gets on a commuter bus 7 and the microbus 7 passes through the gate and approaches the zone 2 where entry is strictly restricted, the security guards in the zone 2 It becomes possible to easily check whether all the riders are persons permitted to enter the area 2 or not.

  In other words, in the security system of the present invention, by using two IDs, an ID for identifying the vehicle-mounted device 10 and an ID for identifying a person, an authority indicating that the user can enter the area, A more detailed authority that represents entering a specific area is managed.

  In the conventional technology, when a large number of people are on the microbus 7, the monitoring device 26 cannot directly receive radio waves transmitted from the ID cards carried by these people. On the other hand, in the security system according to the present embodiment, since a person who does not have an ID card cannot get on the microbus 7 when boarding, a suspicious person who does not have an ID card is strictly restricted. You cannot pass to area 2

  Thus, according to the security and area monitoring method according to this embodiment of the present invention, it is easy to determine whether or not a person on the vehicle is a person permitted to enter a restricted area. It will be judged.

(Second Embodiment)
The monitoring device used in the security system according to the second embodiment of the present invention has the same function as the monitoring device 26 according to the first embodiment of the present invention, and receives radio waves transmitted from the vehicle-mounted device 10. In addition, a function is added to allow the security guard to guess from which direction the microbus 7 is directed to the guard room 9.

  FIG. 6 is a block diagram of a monitoring device used in the security system according to the present embodiment. The monitoring device 33 includes a radio wave receiver 34 composed of a reference antenna 34a and a plurality of array antennas 34b, a frequency converter 35 that converts a received signal received by the radio wave receiver 34 into an intermediate frequency, and a frequency converter And an AD conversion unit 36 that outputs data obtained by digitally converting the output from the unit 35 as received data.

  As the reference antenna 34a and the array antenna 34b, a plurality of antenna elements are used, which are arranged in a grid pattern at predetermined intervals in the vertical and horizontal directions on a plane. As a result, the radio wave receiver 34 can receive radio waves coming from, for example, an azimuth direction of 360 ° surrounding the radio wave receiver 34 on the horizontal plane. Further, the reference antenna 34a and the array antenna 34b can be used in an upright position. Both the reference antenna 34 a and the array antenna 34 b are connected to the frequency converter 35. In the present embodiment, the radio wave receiver 34, the frequency converter 35, and the AD converter 36 cooperate to function as a receiver that receives a radio signal transmitted from the vehicle-mounted device 10.

  Furthermore, the radio wave device 33 estimates the arrival direction of the radio wave from the vehicle-mounted device 10 based on the reception data output from the AD conversion unit 36, and outputs the radio wave arrival direction that outputs a two-dimensional image of the radio wave intensity distribution. A two-dimensional image output from the estimation unit 37, a camera unit 38 as an imaging unit that outputs an image of the field of arrival of the radio wave estimated by the radio wave arrival direction estimation unit 37, and the radio wave arrival direction estimation unit 37 And an image processing unit 39 that performs a process of combining the image output from the camera unit 38 with the image.

  The radio wave arrival direction estimation unit 37 estimates the arrival direction of radio waves by performing arithmetic processing using the radio holography method on the reception signals received by the antenna elements constituting the radio wave reception unit 34. The camera unit 38 is capable of 360 ° panoramic photography and is attached to the housing of the radio wave device 33 or the like. In addition, 360 ° panoramic shooting may be performed.

  The arrangement of various facilities in the area where the security system according to the present embodiment is provided is also the same as the example of FIG. In FIG. 6, the elements other than these having the same reference numerals as those described above are the same. Accordingly, the monitoring device 33 has the same function as that of the monitoring device 26 according to the first embodiment of the present invention, and a configuration capable of specifying a radio wave emission source is added.

  With such a configuration, the vehicle-mounted device 10 mounted on the microbus 7 acquires the person ID information of the person who gets on the vehicle. When receiving the question signal from the question signal sending unit 12, the vehicle-mounted device 10 sends a radio signal including vehicle ID information for identifying the microbus 7 and person ID information of all persons on board.

  The monitoring device 33 receives radio waves from the vehicle-mounted device 10, compares the acquired person ID information with information registered in the database 30, and determines whether the person on the microbus 7 is permitted to enter. Judgment is made by collation. Monitor whether each of the result of collating the OBE ID information with the OBE ID information stored in the database 30 and the result of collating the person ID information with the person ID information stored in the database 30 is established. The device 33 determines.

  When the monitoring device 33 determines that the two verification results are established, the monitoring device 33 displays that the entry of the microbus 7 with a person on it is permitted. The monitoring device 33 issues an alarm when one of the two verification results is not established. As a result, the guard knows that an unauthorized person is on the microbus 7.

  The monitoring device 33 receives radio waves from all directions. The radio wave arrival direction estimation unit 37 calculates the arrival direction of radio waves, that is, the distribution of direction angle, elevation angle, and electric field strength by signal processing. This signal processing is performed, for example, by calculating a phase difference between a signal received from the reference antenna 34a at a predetermined time and a signal received from each array antenna at the same time as this time. For example, the camera unit 38 outputs an image of the microbus 7 that moves toward the area 2 in the area 1 to the image processing unit 39.

  The image processing unit 39 converts the estimation result output from the radio wave arrival direction estimation unit 37 into a two-dimensional image. The image processing unit 39 performs a process of superimposing the two-dimensional image and the image from the camera unit 38 to superimpose the two-dimensional distribution of the radio wave intensity on the actual image of the microbus 7 and to obtain the composite image data. Generate. The display unit 32 displays this composite image on the screen. Therefore, the position in the area 1 of the microbus 7 equipped with the vehicle-mounted device 10 is visualized. The observer checks whether radio waves are emitted from the microbus 7 or not.

  Even when a plurality of micro buses 7 are moving in the area 1, the guard can easily identify the positions of these micro buses 7 in a wide range by constantly monitoring the composite image.

  As described above, according to the security system and the area monitoring method according to the present embodiment, the intensity of the radio wave for each direction of arrival of the radio wave from the vehicle-mounted device 10 is imaged, and the distribution of the intensity and the camera image are combined. Since the synthesized image thus displayed is displayed, it is possible to collect information related to the person on the vehicle on the surveillance camera. For example, the present invention can be applied to a technology in the security field that identifies a suspicious person.

(Third embodiment)
In the security system according to the first embodiment of the present invention, the vehicle enters the area 1 such as a site. In the security system according to the third embodiment of the present invention, an example will be described in which a ship navigates to a specific area where entry is restricted in the sea or river, with the sea or river as an area.

  FIG. 7 is a diagram for explaining the arrangement of various facilities on the sea to which the security system according to the present embodiment is applied. The sea 40 shown in FIG. 7 is an area. For example, the water areas 41a to 41c are determined in order to avoid a collision between a fence or a floating object in the sea 40 and a ship. Of these water areas 41a to 41c, the water area 41b is an area where entry is restricted.

  In the example of the present embodiment, a plurality of ships 42 approach the coast 43 from different directions on the sea. A monitoring device 44 is provided in the monitoring center on the coast 43. The monitoring device 44 has the same function as the monitoring device 33 used in the security system according to the second embodiment of the present invention, and in addition, the strength of the radio wave that can be transmitted by the question signal transmission unit 12 of the monitoring device 44. The size has been increased.

  The monitoring device 44 is configured to be able to wirelessly communicate with each of the ships 44 that navigate the water areas 41a to 41c. The monitoring device 44 has a function of receiving radio waves transmitted from the vehicle-mounted device 10 mounted on these ships 42 and estimating the arrival directions of these ships 42. The monitoring device 44 knows the direction in which these ships 44 are approaching by the function of visualizing radio waves. The monitoring device 44 also monitors whether or not all persons on the ship 42 sailing from various directions toward the coast are permitted to enter the water area 41b.

  In the present embodiment, the monitoring device 44 monitors whether or not there is a ship passing through the water area 41b among the ships 42 navigating toward the coast 43 by a monitor in the monitoring center. The monitoring device 44 issues a warning when there is a ship 42 passing through the water area 41b, and the monitoring person warns the ship 42 based on this warning.

  That is, the example of the security system according to the present embodiment has the same function as the example of the security system according to the first embodiment of the present invention, but the vehicle-mounted device 10 is attached to the ship 42 instead of the vehicle. The point is different.

  In the security system according to the present embodiment having such a configuration, when a person who wants to pass through the water areas 41 a and 41 c at another port gets on the ship 42, the person who gets on the board is provided with the vehicle-mounted device 10 provided on the ship 42. The vehicle-mounted device 10 registers the person ID information recorded on the ID card. A person who has been successfully registered is allowed to pass through the water areas 41a and 41c while on board the ship 42. A person who is not registered normally is checked by the crew of the ship 42 and cannot get on board. When the registration process by the vehicle-mounted device 10 is completed, the person ID information of all persons on the ship 42 is accumulated in the vehicle-mounted device 10.

  After the person ID information of all persons on board is registered in the vehicle-mounted device 10, the ship 42 starts to sail and sails toward a predetermined location on the coast 43. The interrogation signal transmitter installed in the monitoring device 44 continues to transmit the interrogation signal at all times. When receiving the question signal, the vehicle-mounted device 10 of the ship 42 transmits a wireless signal including ship ID information for identifying the ship 42 and person ID information of all persons on board.

  The monitoring device 44 receives radio waves from the vehicle-mounted device 10, compares the acquired ship ID information and person ID information with the information registered in the database 30, and determines whether the person on board is an authorized person. to decide. If the monitoring device 44 determines that the person is not authorized, an alarm is issued. As a result, the supervisor is notified that an unauthorized person is on board the ship 42.

  The monitoring device 44 receives radio waves from all directions. The radio wave arrival direction estimation unit 37 calculates the arrival direction of the radio wave by signal processing. The camera unit 38 outputs, for example, an image of the ship 42 and the sea surface located in the direction from the monitoring device 44 toward the water area 41 b to the image processing unit 39.

  The image processing unit 39 converts the estimation result output from the radio wave arrival direction estimation unit 37 into a two-dimensional image. The image processing unit 39 performs a process of superimposing the two-dimensional image and the image from the camera unit 38 on the composite image data in which the two-dimensional distribution of the radio wave intensity is superimposed on the actual image of the ship 42. Generate. The display unit 32 displays this composite image on the screen. Therefore, the position of the ship 42 equipped with the vehicle-mounted device 10 on the sea is visualized. The supervisor checks whether or not radio waves are emitted from each ship 42.

  Even when the plurality of ships 42 are in the water areas 41a to 41c or the water areas other than these water areas 41a to 41c, the monitor can easily monitor the positions of these ships 42 in a wide range by constantly monitoring the composite image. Can be specified. Therefore, the sea 40 as an area is monitored according to the direction.

  And the monitoring person performs wireless communication only with respect to the ship 42 permitted to pass through the water area 41a, and permits passage. When the ship 42 which is not permitted approaches, the monitoring person issues a warning to the ship 42.

  Thus, according to the security system and the area monitoring method according to the present embodiment, it is possible to specify a ship that is emitting radio waves even when a plurality of ships 42 are reflected in the camera image.

  Further, according to the security system and the area monitoring method according to this embodiment, the radio wave intensity for each direction of arrival of the radio wave from the vehicle-mounted device 10 is imaged and displayed by being combined with the camera image and displayed. It becomes possible to determine whether or not the person on board the ship 42 is a person permitted to enter the restricted area.

  Note that the present invention is not limited to the above-described embodiment as it is, and can be embodied by modifying the constituent elements without departing from the scope of the invention in the implementation stage.

  In the first embodiment, the person ID information is registered by a person holding the ID card over the vehicle-mounted device 10 when getting on the microbus 7. However, the present invention is not limited to the ID card. It is also possible to use a magnetic card on which is recorded. In this case, the in-vehicle device is provided with a magnetic card reader that reads the person ID information from the magnetic card. When a person gets on the microbus 7, a person passes this magnetic card. The vehicle-mounted device 10 transmits the person ID read by the magnetic card reader and the vehicle-mounted device ID information of the vehicle-mounted device 10 itself to the monitoring device 26, whereby the monitoring device 26 acquires two types of IDs. Even in this case, it is possible to prevent a person who does not have an ID card or a slipping through a gate using a forged ID card.

  In addition, various inventions can be formed by appropriately combining a plurality of components disclosed in the embodiment. For example, some components may be deleted from all the components shown in the embodiment. Furthermore, constituent elements over different embodiments may be appropriately combined.

It is a figure which shows the example of arrangement | positioning of the various installations in the area where the security system which concerns on the 1st Embodiment of this invention is applied. It is a block diagram of the onboard equipment used for the security system concerning a 1st embodiment of the present invention. It is a figure which shows an example of the personal identification medium which the person who rides a vehicle carries. It is a block diagram of the monitoring apparatus used for the security system concerning a 1st embodiment of the present invention. It is a flowchart for demonstrating the area monitoring method which concerns on the 1st Embodiment of this invention. It is a block diagram of the monitoring apparatus used for the security system which concerns on the 2nd Embodiment of this invention. It is a figure for demonstrating arrangement | positioning of the various installations in the area where the security system which concerns on the 3rd Embodiment of this invention is applied.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Area, 2-4 ... Area, 5, 8 ... Security gate, 6 ... Building, 7 ... Microbus (vehicle), 9 ... Guard station, 10 ... Onboard equipment, 11 ... Transmission / reception antenna part, 12 ... Question signal sending part 12a, 13, 24 ... transmitting antenna, 14, 25 ... transmitting unit, 15, 20, 27 ... receiving antenna, 16, 21, 28 ... receiving unit, 17 ... person ID storage unit, 18, 23 ... control unit, 19 ... ID card (personal identification medium), 22 ... ID recording unit, 26, 33, 44 ... monitoring device, 29 ... ID demodulation unit, 30 ... database, 31 ... database search unit (search processing unit), 32 ... display unit ( Search processing unit), 34 ... radio wave reception unit, 34a ... reference antenna, 34b ... array antenna, 35 ... frequency conversion unit, 36 ... AD conversion unit, 37 ... radio wave arrival direction estimation unit, 38 ... camera unit (imaging unit), 39 ... Image Processing section, 40 ... Sea (area), 41a~41c ... waters (area), 42 ... ship (vehicle), 43 ... coast.

Claims (5)

The person ID information of the person is acquired from a personal identification medium carried on the vehicle and carried by the person who rides the vehicle, and a radio signal including the person ID information and the in-vehicle device ID information of the in-vehicle device itself is transmitted. On-board equipment,
A monitoring device that is provided in an area having an area where entry is restricted, receives a radio signal from an onboard device mounted on a vehicle entering the area, and displays an alarm;
This monitoring device
A database for storing OBE ID information of an OBE mounted on a vehicle permitted to enter the area, and person ID information of a person permitted to enter the area;
A receiver that receives a radio signal transmitted from the vehicle-mounted device;
The result of collating the vehicle-mounted device ID information included in the wireless signal received by the receiving unit with the vehicle-mounted device ID information stored in the database, and the person ID information included in the wireless signal and stored in the database. A search processing unit that outputs data for displaying an alarm when either one of the results obtained by matching the person ID information is not established;
A security system characterized by comprising: A radio wave arrival direction estimation unit that estimates a radio wave arrival direction from the vehicle-mounted device based on reception data output from the reception unit and outputs a two-dimensional image of the radio wave intensity distribution;
An imaging unit that outputs an image of the field of arrival of the radio wave estimated by the radio wave arrival direction estimation unit;
An image processing unit that combines the two-dimensional image output from the radio wave arrival direction estimation unit with the image output from the imaging unit;
A display unit for displaying an image synthesized by the image processing unit;
The security system according to claim 1, further comprising:   The security system according to claim 2, wherein the radio wave arrival direction estimation unit estimates the arrival direction of the radio wave by performing arithmetic processing using a radio holography method.   The security system according to any one of claims 1 to 3, wherein the vehicle-mounted device is mounted on a ship as the vehicle, and the monitoring device is provided in an area having a restricted water area. . A vehicle-mounted device mounted on the vehicle sends a radio signal including the person ID information of the person stored in the personal identification medium carried by the person riding in the vehicle and the vehicle-mounted device ID information of the vehicle-mounted device;
A monitoring device provided in an area having an area where entry is restricted, receiving a radio signal transmitted from an onboard device mounted on a vehicle entering the area;
The monitoring device searches a database that stores in-vehicle device ID information of an on-vehicle device mounted on a vehicle permitted to enter the area and person ID information of a person permitted to enter the area. Outputting a first result obtained by comparing the in-vehicle device ID information included in the received wireless signal with the in-vehicle device ID information stored in the database;
The monitoring device searching the database and outputting a second result of collating the person ID information included in the received wireless signal with the person ID information stored in the database;
The monitoring device displaying an alarm when either one of the first result and the second result is not established; and
An area monitoring method comprising:

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