JP5137519B2 - Construction site security system - Google Patents

Description

  The present invention relates to a construction site crime prevention system for preventing a suspicious person from entering a construction site such as a building or a condominium to be stolen.

  In general, in a building or a condominium, a temporary scaffold for work is assembled so as to surround a building in order to smoothly perform exterior work or equipment maintenance work. At that time, in order to maintain safety and aesthetics, the temporary scaffolding is often covered with a seat cover or the like so as not to be directly visible from the outside.

  However, at construction sites with such temporary scaffolds, suspicious people use this temporary scaffold to climb up above the building during daytime work breaks or at night, and easily enter the building. There are many damages such as theft of residents. In addition, since the temporary scaffold is often covered with a seat cover or the like so that it cannot be seen from the outside as described above, there is also a problem that it is difficult to find intruders.

In order to prevent the occurrence of damage such as theft at a construction site where such a temporary scaffold is installed, Patent Document 1 discloses a construction site where an intruder is detected by an intrusion detection sensor on a temporary scaffold and an alarm is activated. A security system is disclosed. This system is configured so that a portable transmitter is carried by an on-site worker, and if an intrusion detection sensor detects the portable transmitter, it is determined not to be a suspicious person and an alarm is not generated. Has been.
JP-A-2005-31831

  However, there is a possibility that small animals or foreign objects may be detected by the sensor, rainwater or the like may be attached to the sensor provided outdoors, or the seat provided on the temporary scaffold may be shaken by the wind and cause false reports. It was. Furthermore, due to the directivity of the transmitter, etc., there was an erroneous operation in which an on-site worker was judged as an intruder and an alarm was issued even though the portable transmitter was owned.

  Therefore, the above system still has a problem that there are many erroneous operations. If it is determined that a suspicious person has intruded due to an erroneous operation, the relevant parties (for example, field supervisors, management associations, directors, etc.) are contacted in advance by email or other means. Those who were suspicious were unable to determine whether they were suspicious and were suffering from misinformation.

  Therefore, in order to avoid receiving false alarms, the parties concerned who are notified when there is an intrusion can respond to the case where the receiver that receives the suspicious person intrusion report is turned off or contacted. It was done not to.

  In addition, for example, when the person who owns the receiver is out of reach of radio waves, the alarm itself is not received. In addition, even if a report notification was received, it was necessary for a pre-registered party to go to the site to check the situation and contact the police after judging the situation. There was a danger. In addition, the related parties are not always near the site, and if you move to the site after receiving a report, the suspicious person may have left the site and may not be able to respond to the suspicious person. .

  Therefore, the technical problem to be solved by the present invention is that a suspicious person enters a building using a temporary scaffolding installed at a construction site such as a building or a condominium, and a resident is stolen. It is an object of the present invention to provide a construction site crime prevention system that can effectively prevent the occurrence of damage, reduce the occurrence of false alarms, and reduce the burden on those who receive reports.

  In order to solve the above technical problem, the present invention provides a construction site crime prevention system having the following configuration.

According to the first aspect of the present invention, an intrusion detection unit that is installed at a specific location of the temporary scaffold where there is a risk of entering the building by the temporary scaffold, and transmits an intrusion confirmation signal when the intruder is detected; ,
A portable transmitter that can be carried by field workers and can transmit radio waves of worker recognition signals;
A construction site comprising: an intrusion management terminal provided at a different location from a building in which the temporary scaffolding is provided and configured to be capable of network communication with the intrusion detection unit and receiving an intrusion confirmation signal from the intrusion detection unit. A security system,
The intrusion detection unit is
A receiver for receiving radio waves of worker recognition signals from the portable transmitter;
A human detection unit that detects a human body in a predetermined detection area and outputs a detection signal;
A camera unit that images a subject in a predetermined shooting area and outputs the captured image data;
When the detection signal is received from the person detection unit in a state where the radio wave of the worker recognition signal is not received by the reception unit, the intrusion management signal includes the intrusion confirmation signal including image data captured by the camera unit. A control calculation unit for transmitting to the terminal via the network;
With
The control calculation unit is
A buffer for storing images taken by the camera unit;
Photographed every predetermined time by the camera unit and stored in the buffer,
When the human detection unit detects a human body in a predetermined detection area, a predetermined number of image data captured by the camera unit and stored in the buffer are read from the latest one, and the read image data is Sent to the intrusion management terminal via the network,
The intrusion management terminal includes a display unit for displaying imaging data included in the intrusion confirmation signal received from the intrusion detection unit, and provides a construction site crime prevention system.

According to the second aspect of the present invention, the construction site crime prevention system comprises:
A base station unit that is provided in a base station at a construction site and is communicable with the intrusion detection unit and configured to be able to transmit an intrusion confirmation signal output from the intrusion detection unit to the intrusion management terminal through network communication Further comprising
The intrusion detection unit is provided with a plurality of units, and further includes a unit identifier storage unit that stores a unit identifier for identifying each unit, and includes the unit identifier in the intrusion confirmation signal via the base station unit. The construction site crime prevention system according to the first aspect is characterized by transmitting to the intrusion management terminal.

According to the third aspect of the present invention, the base station unit associates a unit identifier of any one of the intrusion detection units with a unit identifier of an associated intrusion detection unit related to the one intrusion detection unit. It has a sensor database to store,
The construction site crime prevention system according to the second aspect, further comprising a control calculation unit that operates the related intrusion detection unit when receiving the intrusion confirmation signal from the first intrusion detection unit.

  According to a fourth aspect of the present invention, in the third aspect, the related intrusion detection unit is an intrusion detection unit adjacent to the arbitrary one intrusion detection unit in a passage of a temporary scaffold. Provide construction site security system.

  According to a fifth aspect of the present invention, in the first to fourth aspects, the detection area and the imaging area of the intrusion detection unit are set to be shifted along the passage of the temporary scaffold. Provide any one construction site security system.

According to the sixth aspect of the present invention, the intrusion management terminal is configured to be able to communicate with a terminal device operated by a resident of the building through a network,
A resident database storing a resident identifier of the resident;
Sending a photographing operation signal for performing a photographing operation to an intrusion detection unit provided in the resident's building by receiving a browsing request signal transmitted from the terminal device,
The construction site crime prevention system according to any one of the first to fifth aspects, further comprising an image confirmation control unit that receives image data captured by the intrusion detection unit and transmits the image data to the terminal device. provide.

  According to the present invention, when the intrusion confirmation signal is received without receiving the worker recognition signal from the portable transmitter by the receiving unit, the camera unit performs processing so as to start imaging, and the intrusion confirmation signal includes the camera. Since the image data captured by the unit is transmitted to the intrusion management terminal, the intrusion management terminal can check the suspicious person using the image data. Therefore, the suspicious person can be confirmed with higher accuracy, and erroneous reports to the related parties can be reduced.

  According to the third aspect of the present invention, by operating the related intrusion detection unit related to one intrusion detection unit, it is possible to more reliably image and detect a suspicious person moving along the intrusion route. In addition, since the related intrusion detection unit can be operated by a signal from the base station unit, the lag of the rise time from when the related intrusion detection unit itself detects the presence of a suspicious person to when the camera starts imaging is reduced. Since the number of images can be reduced and the image can be captured immediately after the suspicious person is detected, the suspicious person can be imaged more reliably.

  According to the sixth aspect of the present invention, since the intrusion management terminal can be operated by the terminal device operated by the resident of the building and the captured image captured by the intrusion detection unit can be confirmed from the terminal device, the resident can photograph the room. Can be anxious about whether or not. In addition, when the image is confirmed, the unidentified person's image can be prevented from being confirmed by using the resident identifier stored in the resident database.

  Hereinafter, a construction site crime prevention system according to an embodiment of the present invention will be described with reference to the drawings.

(First embodiment)
Drawing 1 is a figure showing the schematic structure of the building which is the construction site where the construction site crime prevention system concerning the embodiment of the present invention is used. This construction site crime prevention system is in a state in which a temporary scaffold 110 is provided around the outer wall of the building 100, and is configured for the purpose of preventing a suspicious person from entering the building through the temporary scaffold 110. is there. As shown in FIGS. 1 and 2, the temporary scaffolding 110 is assembled in a multi-story structure along the periphery of the building 100. That is, the pillars 114 are erected around the building, and the treads 111, 112, 113 are assembled between the pillars 114 so as to have a multilayer floor structure from the ground floor. Stairs 115 are provided between the treads 111, 112, 113 of each level, and are configured to be movable on each floor.

  Drawing 2 is a mimetic diagram showing an example of attachment arrangement of a sensor unit of a construction site crime prevention system of this embodiment. As shown in FIG. 2, in the construction site crime prevention system, a plurality of intrusion detection units 20 a, 20 b, 20 c, 20 d, and 20 e are provided on the column 114 of the temporary scaffold 110. Hereinafter, the intrusion detection unit is collectively referred to by reference numeral 20 when it is not necessary to distinguish the individual intrusion detection units.

  FIG. 3 is a perspective view schematically showing the external configuration of the intrusion detection unit. The intrusion detection unit 20 has a housing 21 attached to the support column 114 by a fixing bracket 22, and a mechanism for detecting and notifying the intrusion of a suspicious person is provided in the housing 21. As a mechanism for detecting the intrusion of a suspicious person by the intrusion detection unit 20, a camera unit 23 and a person detection unit 25 provided below the housing 21 are provided. Further, the casing 21 is provided with an illumination unit 24 as necessary, so that the imaging region can be irradiated when the camera unit 23 performs imaging. Further, for example, a speaker (not shown) may be provided so as to make a threatening sound to a suspicious person. Note that a mechanism for notifying a suspicious person when an intrusion is detected will be described later.

  The person detection unit 25 provided in the intrusion detection unit 20 is, for example, a human body detection infrared sensor called a so-called passive infrared system, which detects infrared rays from the detection windows 25a and 25b of the person detection unit 25, and Infrared changes that occur when a human or animal with a temperature difference moves.

  The detection windows 25a and 25b of the person detection unit 25 may be configured to detect different detection areas 52a and 52b, respectively. That is, as shown in FIG. 4, the detection areas detected by the respective detection windows 25a and 25b in the height direction are set so as to be shifted within a range that can be detected simultaneously when a person H is present. It can also be configured to detect the presence of a person only when detected substantially simultaneously by 25a and 25b. With this configuration, when a small animal C such as a cat or the like enters the scaffold 111, only the detection region of the lower detection window 25a detects the presence of the small animal C, thereby preventing a human being from being determined to enter. be able to. In this case, the attachment position P of the person detection unit 25 with respect to the scaffolding plate 111 is preferably about 900 to 1200 mm.

  FIG. 5 shows a functional configuration of a terminal installed at the construction site in the construction site crime prevention system according to the present embodiment. As shown in FIG. 5, the construction site crime prevention system is provided with an intrusion detection unit 20 and a base station terminal 30 that controls communication with the intrusion detection unit 20 installed at the construction site. ing. In FIG. 5, only one intrusion detection unit 20 is shown. However, as shown in FIG. 2, a plurality of intrusion detection units 20 are provided at appropriate positions on the temporary scaffolding 110, and individually transmit and receive with the base station terminal 30. be able to.

  The intrusion detection unit 20 is a wireless receiver that receives an operator recognition signal transmitted from an authentication tag 10 as an example of a portable transmitter that is held and carried by an operator such as a worker who performs construction work, via an antenna 29a. 28 receives. When receiving the worker recognition signal from the authentication tag 10, the wireless receiver 28 outputs the signal to the control calculation unit 26. The authentication tag 10 is a portable small radio wave transmitter, and transmits a weak radio wave of an operator recognition signal including an identification signal for the authentication tag 10 stored in advance in a memory or the like by the power of a built-in battery.

  Further, when the presence of a person is detected by the person detection unit 25, a detection signal is output to the control calculation unit 26. Although specific details of the control calculation unit 26 will be described later, the control calculation unit 26 recognizes the worker from the wireless receiver 28 within a predetermined time when the person detection unit 25 confirms the presence of the person. If no signal has been received, it is determined that a suspicious person has been detected. If a worker recognition signal has been received from the wireless receiver, it is determined that the person is not a suspicious person. In addition, about the process which judges whether it is a related person using the authentication tag 10, it is selectable, for example, at night etc., a person is irrespective of the presence or absence of reception of the worker recognition signal of the authentication tag 10. When the detection unit 25 confirms the presence of a person, the person may be determined to be a suspicious person, and a process for notifying a suspicious person's intrusion described later may be performed.

  Regardless of whether or not the presence of the person is detected by the person detection unit 25, the camera unit 23 performs continuous shooting of a preset shooting region at predetermined time intervals. That is, for example, the imaging region is imaged once per second. The captured image is stored in the buffer memory 26a. The buffer memory 26a is a memory for accumulating image data captured by the camera unit 23. The amount of image data that can be stored can be set as appropriate by adjusting the capacity of the memory and the image data. At this time, the imaging date and time, the identification number of the imaging camera, and the like may be stored as metadata in the image data.

  As described above, since the camera unit 23 continuously captures images at predetermined time intervals, if there is image data captured exceeding the storage capacity of the buffer memory 26a, the camera unit 23 is the most in the buffer memory 26a. The old image data is deleted, and newly captured image data is accumulated.

  When the presence of a suspicious person is confirmed by the person detection unit 25, the control calculation unit 26 starts irradiation by the illumination unit 24, and obtains a predetermined number (for example, the latest number of image data captured by the camera unit 23). (About 2 to 10 sheets) is read, and the read image data is transmitted to the base station terminal 30 via the transmission unit 27. At this time, the control calculation unit 26 may separately issue an intrusion confirmation signal indicating that a suspicious person has entered, and transmit the intrusion confirmation signal to the base station terminal 30.

  The base station terminal 30 includes a storage area 35 for storing a base station identifier provided for each base station. When the reception unit 31 of the base station terminal 30 receives an intrusion confirmation signal or image data from the intrusion detection unit 20, the received information is output to the control calculation unit 32. The control calculation unit 32 issues a signal (intrusion confirmation information) indicating that the intruder has been confirmed, and the image data and storage area 35 is transmitted to the intrusion management terminal 40 (see FIG. 6) via the network NT by the network interface 34. Together with the base station identifier stored in.

  FIG. 6 is a functional configuration diagram showing the configuration of the intrusion management terminal used in the construction site crime prevention system according to the present embodiment. The intrusion management terminal 40 is a terminal provided in a place different from the construction site, and is provided in, for example, a monitoring center. When the network IF 42 receives the intrusion confirmation information transmitted from the base station terminal 30 via the network NT, the control calculation unit 41 stores the on-site database 45 based on the base station identifier included in the received intrusion confirmation information. Refer to and identify which construction site the signal is from. Next, the image data transmitted together with the intrusion confirmation information is displayed on the display 44. In the intrusion management terminal 40, the image data picked up by the intrusion detection unit 20 is displayed on the display 44. Based on the display, the suspicious person can be confirmed by visual recognition. Therefore, the suspicious person can be confirmed more reliably, and the occurrence of false alarms can be prevented. When the presence of the suspicious person is confirmed by the intrusion management terminal 40, the information is notified to the outside by the external reporting device 46, and it is possible to contact related persons (such as the on-site supervisor and the director) or the police. .

  FIG. 7 is a flowchart showing intrusion detection processing executed by the intrusion detection unit and the base station terminal of the construction site crime prevention system according to the present embodiment.

  First, the camera unit 23 of the intrusion detection unit 20 always captures a predetermined imaging area every predetermined time (# 10), and sequentially stores the captured image data in the buffer memory 26a. If the person detection unit 25 detects a person (# 12), the information is transmitted to the control calculation unit 26. The control calculation unit 26 determines whether an authentication signal from the authentication tag 10 has been received (# 13). When the authentication signal is received, even if a signal indicating the presence of a person is detected by the person detection unit 25, the person is not determined to be a suspicious person, and the previous processing is not performed.

  On the other hand, if the authentication signal from the authentication tag is not received when the signal indicating the presence of the person is detected by the person detection unit 25, the detected person is determined to be a suspicious person, and # 14 or less Process.

  8A and 8B are diagrams illustrating an example of a relationship between an imaging area by a camera unit of a construction site security system, a detection area by a person detection unit, and a reach distance of an authentication signal by an authentication tag. In FIG. 8A, since the reach of the authentication signal from the authentication tag 10 is longer than the detection area of the person detection unit 25, the authentication signal from the authentication signal is always received when detected by the person detection unit 25. . On the other hand, as shown in FIG. 8B, when the reach distance of the authentication signal from the authentication tag 10 is shorter than the detection area of the person detection unit 25, the authentication signal from the authentication tag 10 is received at the detection timing by the person detection unit 25. In some cases, a time lag of a predetermined time may be provided between the timings of receiving both. In the construction site crime prevention system according to the present embodiment, an imaging region 51 of the camera unit is provided along the tread 111 of the temporary scaffolding in consideration of not taking an image of the living space in the building. Although the imaging region depends on the imaging angle of view of the camera, the imaging region is configured to be able to image a subject at a distance of approximately 10 to 20 meters. On the other hand, the detection area 52 by the person detection unit 25 covers a range of several tens of meters. Since the reach of the authentication signal from the authentication tag 10 is 2 to 3 meters, the authentication signal is received when the person further approaches the intrusion detection unit after the person verification unit 25 detects the presence of the person first. It can also be done. For this reason, even when the presence of a person is detected by the person detection unit 25, the authentication signal by the authentication tag 10 may not be received. In order to prevent false reports in this case, the person detection unit 25 If the authentication signal from the authentication tag 10 is received within a predetermined time after detection by, the suspicious person is not determined.

  Returning to FIG. 7, when it is determined that the detection by the person detection unit 25 is a suspicious person, the control calculation unit 26 transmits an intrusion confirmation signal indicating the intrusion of the suspicious person and a predetermined number of images from the buffer memory 26 a. Data is read (# 14). It is preferable that the image data to be read is several pieces of data from the latest one. Thereafter, the image data and the intrusion confirmation signal are transmitted to the base station terminal 30.

  In addition, as processing of the intrusion detection unit 20 after the suspicious person is confirmed, the processing returns to imaging processing by the camera unit 23. At this time, the intrusion detection unit 20 reads the read image data or several pieces of image data continuous on the time axis of the read image data (that is, image data taken before the read image data and The image data captured thereafter is preferably stored in the buffer memory 26a without being deleted. This process is automatically continued until a predetermined time (for example, several hours) after the suspicious person is confirmed or until the administrator of the system releases the save mode. It is preferable to keep it.

  When the base station terminal receives the image data and the intrusion confirmation signal (# 16), the base station identifier is read (# 17), and the read image data, the intrusion confirmation signal and the base station identifier are transmitted to the intrusion management terminal 40. (# 18).

  Based on the image data transmitted from the base station terminal, the intrusion confirmation signal, the base station identifier, and the information stored in the field database 43, the intrusion management terminal 40 is information indicating from which base station the suspicious person has entered. And the suspicious person's captured image is displayed on the display 44. If the user of the intrusion management terminal 40 determines that the user is a suspicious person after confirming the image displayed on the display 44, for example, the user can perform an external operation, for example, via the external notification unit 46 by a user operation or the like. Notify the police, etc. of the suspicious person's intrusion.

  According to the above embodiment, it is possible to check a suspicious person using a photographic image with a simple configuration.

(Second Embodiment)
Next, a construction site crime prevention system according to the second embodiment of the present invention will be described. Since the construction site crime prevention system according to the second embodiment has a common part with the system according to the first embodiment, only the differences will be mainly described below.

  The construction site crime prevention system is in a state in which a temporary scaffold 110 is provided around the outer wall of the building 100, and is configured for the purpose of preventing a suspicious person from entering the building through the temporary scaffold 110. .

  FIG. 9 shows a functional configuration of a terminal installed at the construction site in the construction site crime prevention system according to the present embodiment. As shown in FIG. 9, the construction site crime prevention system is provided with an intrusion detection unit 120 and a base station terminal 130 that controls communication with the intrusion detection unit 120 installed at the construction site. ing. Although only one intrusion detection unit 120 is shown in FIG. 9, actually, a plurality of intrusion detection units 120 are provided at appropriate positions on the temporary scaffolding 110, and each of them is an ID storage unit 126 a in the control calculation unit 126. By using the unit identifier stored in the ID storage unit 126a, it is possible to individually perform transmission / reception with the base station terminal 130.

  The intrusion detection unit 120 is owned by an operator such as a worker who performs construction work, and receives a worker recognition signal transmitted from an authentication tag 110 as an example of a portable transmitter carried by the wireless receiver 128 via an antenna 129a. Is enabled to receive. When the wireless receiver 128 receives the worker recognition signal from the authentication tag 110, the wireless receiver 128 outputs the signal to the control calculation unit 126. The authentication tag 110 is a portable small radio wave transmitter, and transmits a weak radio wave of an operator recognition signal including an identification signal for the authentication tag 110 stored in advance in a memory or the like by the power of a built-in battery.

  Further, when the presence of a person is detected by the person detection unit 125, a detection signal is output to the control calculation unit 126. The specific control of the control calculation unit 126 will be described in detail later, but the control calculation unit 126 receives an operator recognition signal from the wireless receiver 128 when the person detection unit 125 confirms the presence of a person. If it is, the person detected by the person detection unit 125 is determined to be a related person. On the other hand, when the person detection unit 125 confirms the presence of a person in a state where the worker recognition signal from the wireless receiver is not received (including a case where a predetermined time has elapsed since reception), the person detection unit 125 The person detected by is determined to be a suspicious person.

  When the presence of a suspicious person is confirmed, the control calculation unit 126 starts irradiation by the illumination unit 124, outputs a camera operation signal to the camera unit 123, and starts imaging of the imaging region. Further, an intrusion confirmation signal indicating that a suspicious person has entered the base station terminal 130 is transmitted via the transmission / reception unit 127. The intrusion confirmation signal includes a unit identifier, and information indicating which intruder detection unit 120 has confirmed the suspicious person can be identified. Further, the control calculation unit 126 transmits the image data captured by the camera unit 123 to the base station terminal 130 via the transmission / reception unit 127.

  When the base station terminal 130 receives the intrusion confirmation signal from the intrusion detection unit 120 by the wireless transmission / reception unit 131, the base station terminal 130 outputs the intrusion confirmation signal to the control arithmetic unit 132. The control calculation unit 132 transmits an intrusion confirmation signal to the intrusion management terminal 140 (see FIG. 10) through the network NT by the network interface 134. The sensor database 133 provided in the base station terminal 130 is a database for storing related information between the intrusion detection units 120 provided in the construction site, and the related intrusion detection unit using the database. The operation process 120 will be described later.

  The intrusion detection unit 20 is associated with one or a plurality of units 120 according to the position where the intrusion detection unit 20 is attached, and the information is stored in the sensor database 133. This is for detecting a suspicious person in conjunction with each other when a suspicious person enters a temporary scaffold. That is, for example, referring to FIG. 2, for one intrusion detection unit 20a, the units 20b and 20c whose intrusion detection area is a position where the intrusion detection unit 20a can be directly moved from the position where the intrusion detection unit 20a is provided. Are associated.

  FIG. 10 is a functional configuration diagram showing the configuration of the intrusion management terminal used in the construction site crime prevention system according to the present embodiment. The intrusion management terminal 140 is a terminal provided in a place different from the construction site, and is provided in, for example, a monitoring center. When the network IF 142 receives the intrusion confirmation information transmitted from the base station terminal 130 via the network NT, the control calculation unit 141 refers to the on-site database 145 based on the unit identifier included in the received intrusion confirmation information. And from which construction site the signal is identified. Next, the image data captured by the camera unit 123 is displayed on the display 144. In the intrusion management terminal 140, the image data picked up by the intrusion detection unit 120 is displayed on the display 144, so that the suspicious person can be confirmed based on the display. Therefore, the suspicious person can be confirmed more reliably and the occurrence of false alarms can be significantly prevented. When the presence of a suspicious person is confirmed by the intrusion management terminal 140, the information is notified to the outside by the external reporting device 146, and it is possible to contact related parties (such as a field supervisor or a director) or the police. .

  Further, in the construction site crime prevention system according to the present embodiment, since the intrusion detection unit 120 having a camera is provided at the construction site, there is a concern about whether the resident who is the construction site will be photographed indoors. It is assumed that The construction site crime prevention system according to the present embodiment can perform confirmation processing to be described later in order to eliminate the concern of the resident, and a resident ID storage unit 143 used for this purpose is provided in the intrusion management terminal 140. .

  FIG. 11 is a flowchart showing intrusion detection processing executed by the intrusion detection unit and the base station terminal of the construction site crime prevention system according to the present embodiment.

  First, the intrusion detection unit 120 determines whether or not the person detection unit 125 has detected a person (# 110). If detected, the process proceeds to # 111, and if not detected, the operation of # 110 is repeated. Since the detection of the person by the intrusion detection unit of the present embodiment can be confirmed by imaging with a camera as will be described later, the determination of the detection of the person may be slightly relaxed.

  Next, it is determined whether or not an operator recognition signal from the authentication tag 110 is received by the wireless receiver 128. When the worker recognition signal is received by the wireless receiver 128, the control calculation unit 126 determines that the person detection by the person detection unit 125 is a related person, and returns to # 110. On the other hand, when the worker recognition signal is not confirmed by the wireless receiver 128, the process proceeds to # 112.

  In # 112, imaging by the camera unit 123 is started. That is, when the presence of a suspicious person is confirmed, the control calculation unit 126 starts irradiation by the illumination unit 124, outputs a camera operation signal to the camera unit 123, and starts imaging of the imaging region. Imaging by the camera unit 123 is performed until a predetermined time elapses (# 113), and still images may be continuously photographed for a predetermined number or time, or a moving image may be photographed. The imaged image data is included in the intrusion confirmation signal and transmitted to the base station terminal 130 via the transmission / reception unit 127 (# 114). The base station terminal 130 transmits an intrusion confirmation signal to the intrusion management terminal 140 through the network NT.

  When the imaging by the camera unit 123 elapses for a predetermined time, the imaging of the image data is stopped and the transmission of the image data to the base station terminal 130 is stopped (# 115). The base station terminal 130 determines whether there is a sensor unit associated with the intrusion detection unit 120 that has transmitted the intrusion confirmation signal. The presence or absence of the related sensor unit is performed based on information stored in the sensor database 133 of the base station terminal 130. If there is a related sensor unit, the related sensor unit is activated (# 117), and the above processing is performed for the related sensor unit. On the other hand, if there is no related sensor unit, the process is terminated.

  The activation of the related sensor unit is a process for shortening the startup time of the related sensor unit. That is, even if the related sensor unit is not activated from the base station terminal 130, if the person detection unit 125 of the sensor can confirm the presence of a person, the intrusion detection unit 120 captures image data and applies it to the base station terminal 130. An intrusion confirmation signal is transmitted. However, as described above, the intrusion detection unit 120 includes the wireless receiver 128 and the camera unit 123 that receive the worker recognition signal from the authentication tag 110. If these devices are allowed to always start, power consumption increases. Therefore, the standby mode is normally set and a predetermined time is often required for startup. In this case, by sending an activation signal from the base station terminal 130 to the related intrusion detection unit 120, the start-up time is shortened, and when a suspicious person reaches the sensor detection area of the intrusion detection unit, An action can be performed.

  FIG. 12 is a flowchart showing the captured image confirmation process executed by the intrusion management terminal of the construction site crime prevention system according to the present embodiment. In the captured image confirmation process, a resident of a building provided with the intrusion detection unit 120 of the construction site security system according to the present embodiment is photographed in the own living space by a camera provided in the intrusion detection unit 120. The image data captured by the camera can be confirmed by the resident himself. A specific processing flow is as follows.

  As a premise for performing this processing, the resident ID storage unit 143 of the intrusion management terminal 140 stores the identifier of the resident who performs the confirmation, and the construction site stored in the site identifier stored in the site database 145 Must be associated with That is, it is necessary for the intrusion management terminal 140 that has received the resident identifier to have information so that the resident identifier can confirm which construction site the resident resides in.

  First, the intrusion management terminal 140 is accessed using the resident terminal 150 operated by the resident. The resident terminal 150 can be exemplified by a general-purpose computer, for example, and is configured to be able to communicate with the intrusion management terminal 140 via the Internet NT. A confirmation request signal is transmitted from the resident terminal 150 to the intrusion management terminal 140. The confirmation request signal includes a resident identifier, and the intrusion management terminal 140 that has received the confirmation request signal (# 120) performs resident authentication based on the resident identifier (# 121). Perform resident authentication, and if it matches the resident identifier stored in the resident ID storage unit 143, based on the information of the resident identifier, confirm / specify the site identifier stored in the site database 45, Identify which construction site the resident is associated with.

  The site database 145 is a database for specifying a construction site where the intrusion detection unit intrusion detection unit 120 is provided, and the intrusion detection unit 120 provided in the construction site can be specified by a unit identifier.

  Next, the control calculation unit 141 of the intrusion management terminal 140 identifies one of the intrusion detection units 120 provided in the construction site and transmits a camera activation signal to the identified intrusion detection unit 120. (# 123). In addition, the specific method of the intrusion detection unit 120 provided in the construction site is not particularly limited, and information on which intrusion detection unit 120 is to be identified with respect to the unit identifier number order and the resident terminal. It is also possible to process so as to request the input.

  When the camera activation signal is transmitted to a specific intrusion detection unit 120 at a specific construction site, the intrusion detection unit 120 captures an image with the camera unit 123 and transmits the captured image data to the intrusion management terminal 140. The intrusion management terminal 140 receives this image data (# 124) and transmits it to the resident terminal 150 via the network (# 125). In the resident terminal 150, the image data transmitted from the intrusion management terminal 140 and displayed on the display can be confirmed, and the image taken by the intrusion detection unit 120 can be confirmed. .

  When a signal requesting confirmation of image data taken by another intrusion detection unit 120 is transmitted from the resident terminal 150 to the intrusion management terminal 140 (# 126), the intrusion management terminal 140 detects the intrusion detection to be imaged. The unit 120 is switched, and a camera activation signal is transmitted to the switched intrusion detection unit 120. Hereinafter, the intrusion detection unit 120 that has received the camera activation signal repeats the above processing and transmits the image data captured by the camera unit 123 to the intrusion management terminal 140, and the resident terminal 150 receives the image via the intrusion management terminal 140. Data can be confirmed.

  As described above, according to the construction site crime prevention system according to the present embodiment, when the intrusion detection unit 120 confirms the intrusion of the suspicious person, the intrusion confirmation signal is transmitted to the intrusion management terminal 140 together with the image data from the camera unit. Since the suspicious person is confirmed based on the image data that is transmitted and displayed on the intrusion management terminal 140, false alarm communication is greatly reduced. In addition, since the suspicious person is confirmed based on the image data, the relevant intrusion detection unit 120 is activated and the image data is imaged, so that the suspicious person can be more reliably imaged and confirmed without causing a time lag of the activation time. It becomes.

  For residents who are worried that the inside of the living space will be imaged by the camera provided in the intrusion detection unit 120, the intrusion management terminal 140 is accessed and the intrusion management terminal 140 is connected to the intrusion detection unit 120. By transmitting the camera activation signal, it is possible to confirm the image data actually captured.

  In addition, this invention is not limited to the said embodiment, It can implement in another various aspect.

It is a figure which shows schematic structure of the building which is a construction site where the construction site crime prevention system concerning this embodiment is used. It is a schematic diagram which shows the example of attachment arrangement | positioning of the sensor unit of the construction site crime prevention system of this embodiment. It is a perspective view which shows typically the external appearance structure of an intrusion detection unit intrusion detection unit. It is a figure which shows an example of the relationship between the detection area | region of a person detection part of an intrusion detection unit and an intrusion detection unit, and a person. It is a figure which shows the function structure of the terminal installed in a construction site among the construction site crime prevention systems concerning 1st Embodiment of this invention. It is a figure which shows the function structure which shows the structure of the intrusion management terminal used for the construction site crime prevention system concerning 1st Embodiment of this invention. It is a flowchart which shows the intrusion detection process performed by the intrusion detection unit and intrusion detection unit of the construction site crime prevention system according to the first embodiment of the present invention. It is a figure which shows the relationship between the imaging area by the camera part of the construction site crime prevention system concerning 1st Embodiment, the detection area by a person detection part, and the receiving area of the authentication signal by an authentication tag. It is a figure which shows the other structural example of the relationship between the imaging area by the camera part of a construction site crime prevention system, the detection area by a person detection part, and the reception area | region of the authentication signal by an authentication tag. It is a figure which shows the function structure of the terminal installed in a construction site among the construction site crime prevention systems concerning this embodiment. It is a figure which shows the function structure which shows the structure of the intrusion management terminal used for the construction site crime prevention system concerning this embodiment. It is a flowchart which shows the intrusion detection process performed by the intrusion detection unit of the construction site crime prevention system concerning this embodiment, an intrusion detection unit, and a base station terminal. It is a flowchart which shows the process of the picked-up image confirmation performed by the intrusion management terminal of the construction site crime prevention system concerning 2nd Embodiment.

Explanation of symbols

10, 110 Authentication tag 20, 20a, 20b, 20c, 20d, 20e, 120 Intrusion detection unit 23, 123 Camera unit 24, 124 Illumination unit 25, 125 Person detection unit 25a, 25b Detection window 26, 126 Control calculation unit 27 Transmission Units 28 and 128 Radio receivers 30 and 130 Base station terminal 31 Receivers 32 and 132 Control operation units 40 and 140 Intrusion management terminals 41 and 141 Control operation unit 44 Display 45 and 145 On-site database 46 and 146 External reporting device 100 Building 110 Temporary scaffolding 111,112,113 Footboard 114 Strut 127,131 Transceiver 133 Sensor database

Claims (6)

An intrusion detection unit that transmits an intrusion confirmation signal when it is installed at a specific location of the temporary scaffold that is likely to enter a building by a temporary scaffold and detects the intruder,
A portable transmitter that can be carried by field workers and can transmit radio waves of worker recognition signals;
A construction site comprising: an intrusion management terminal provided at a different location from a building in which the temporary scaffolding is provided and configured to be capable of network communication with the intrusion detection unit and receiving an intrusion confirmation signal from the intrusion detection unit. A security system,
The intrusion detection unit is
A receiver for receiving radio waves of worker recognition signals from the portable transmitter;
A human detection unit that detects a human body in a predetermined detection area and outputs a detection signal;
A camera unit that images a subject in a predetermined shooting area and outputs the captured image data;
When the detection signal is received from the person detection unit in a state where the radio wave of the worker recognition signal is not received by the reception unit, the intrusion management signal includes the intrusion confirmation signal including image data captured by the camera unit. A control calculation unit for transmitting to the terminal via the network;
With
The control calculation unit is
A buffer for storing images taken by the camera unit;
Photographed every predetermined time by the camera unit and stored in the buffer,
When the human detection unit detects a human body in a predetermined detection area, a predetermined number of image data captured by the camera unit and stored in the buffer are read from the latest one, and the read image data is Sent to the intrusion management terminal via the network,
The construction site crime prevention system, wherein the intrusion management terminal includes a display unit for displaying imaging data included in the intrusion confirmation signal received from the intrusion detection unit. The construction site security system
A base station unit that is provided in a base station at a construction site and is communicable with the intrusion detection unit and configured to be able to transmit an intrusion confirmation signal output from the intrusion detection unit to the intrusion management terminal through network communication Further comprising
The intrusion detection unit is provided with a plurality of units, and further includes a unit identifier storage unit that stores a unit identifier for identifying each unit, and includes the unit identifier in the intrusion confirmation signal via the base station unit. The construction site security system according to claim 1, wherein the system is transmitted to the intrusion management terminal. The base station unit includes a sensor database that stores a unit identifier of any one of the intrusion detection units and a unit identifier of a related intrusion detection unit related to the one intrusion detection unit in association with each other,
The construction site crime prevention system according to claim 2, further comprising a control calculation unit that operates the related intrusion detection unit when receiving an intrusion confirmation signal from the one intrusion detection unit.   The construction site crime prevention system according to claim 3, wherein the related intrusion detection unit is an intrusion detection unit adjacent to the arbitrary one intrusion detection unit in a passage of a temporary scaffold.   The construction site crime prevention system according to any one of claims 1 to 4, wherein the detection area and the imaging area of the intrusion detection unit are set to be shifted along a passage of the temporary scaffold. . The intrusion management terminal is configured to be able to communicate with a terminal device operated by a resident of the building through a network,
A resident database storing a resident identifier of the resident;
Sending a photographing operation signal for performing a photographing operation to an intrusion detection unit provided in the resident's building by receiving a browsing request signal transmitted from the terminal device,
The construction site crime prevention device according to any one of claims 1 to 5, further comprising an image confirmation control unit that receives imaging data photographed by the intrusion detection unit and transmits the data to the terminal device. system.

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