JP2010021831A - Intercom system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide information useful for specifying an outbreak cause. <P>SOLUTION: An intercom master 1 sends an image request signal to a camera device 4 when receiving a fire detection signal from a fire alarm 3, and the camera device 4 sends image data from a given time prior to receiving the image request signal to a present time to the intercom master 1 when receiving the image request signal from the intercom master 1. The intercom master 1 displays the image data concerned in a given cycle and plays it back as a picture. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to an intercom system including a fire alarm and a camera device.

Conventionally, a security-compatible intercom system consisting of an interphone master unit, door phone slave unit, fire alarm device, and camera device sounds an alarm sound from the interphone master unit when the fire alarm detects a fire. It has a configuration (for example, see Patent Document 1).
JP-A-8-070361

  However, the interphone system as described above only provides notification of the occurrence of a fire and cannot provide information useful for identifying the cause of the fire.

  The present invention has been made in view of the above circumstances, and an object thereof is to provide an intercom system capable of providing information useful for identifying the cause of a fire.

  In order to solve the above problems, an interphone system according to the present invention is an interphone system including an interphone master unit, a fire alarm device, and a camera device, and the camera device is an image within a monitoring range at an installation location. Image capturing means for capturing images at a predetermined cycle, past image storage means for storing past image data captured by the image capturing means from before a predetermined time to immediately before, and past image data stored by the past image storage means And image transmission means for transmitting the current image data captured by the image capturing means to the interphone master unit. The interphone master unit includes a detection signal receiving means for receiving a fire detection signal from the fire alarm, and a detection signal. A request signal transmitting means for transmitting an image request signal to the camera device after the receiving means has received the fire detection signal; An image receiving means for receiving image data, characterized by comprising a video reproduction means for reproducing the image by displaying the image data received by the image receiving means.

  In addition to the above, the interphone system according to the present invention is characterized in that the interphone master unit includes received image storage means for storing the image data received by the image receiving means.

  According to the intercom system of the present invention, since the image of the camera device from the predetermined time before the fire alarm detects the fire until the present is displayed on the screen of the intercom master unit, grasp the situation on the scene before the fire detection The cause of the fire can be identified, and the occurrence of a fire due to the same cause can be prevented.

  Further, according to the intercom system of the present invention, the image data of the camera device from the predetermined time before the fire alarm detects the fire to the present is stored in the intercom master unit. The state before and after the occurrence can be checked carefully.

  Hereinafter, an intercom system according to an embodiment of the present invention will be described with reference to the drawings.

  As shown in FIG. 1, an interphone system according to an embodiment of the present invention includes an interphone master unit 1, a door phone slave unit 2, one or more fire alarm devices 3, and one or more camera devices 4. It is configured.

  The intercom base unit 1 is installed on an indoor wall or the like of an apartment house or a general house, and can communicate with a doorphone slave unit 2 installed on an outer wall of a doorway. As shown in FIG. 2, the intercom base unit 1 includes an alarm receiving unit 11, a communication unit 12, a storage unit 13, a display unit 14, an operation unit 15, and a control unit 16.

  The alarm receiver 11 receives a fire detection signal transmitted by the fire alarm 3 when a fire is detected.

  The communication unit 12 transmits an image request signal for requesting image data to the camera device 4. The communication unit 12 receives image data transmitted by the camera device 4 in response to the image request signal.

  The storage unit 13 is configured by a non-volatile semiconductor memory or the like, and stores image data from the camera device 4.

  The display unit 14 is configured by a liquid crystal display or the like provided on the front surface of the interphone master unit 1, and reproduces it as a video by displaying the image data at a predetermined period.

  The operation unit 15 includes various operation buttons provided on the front surface of the interphone master unit 1 and detects various operations of the resident. The operation unit 15 has at least a playback button 1a (see FIG. 1) for starting playback of video.

  The control unit 16 instructs the communication unit 12 to transmit an image request signal to the camera device 4 when a fire detection signal from the fire alarm 3 is received. Then, when image data from the camera device 4 is received, the control unit 16 stores the image data in the storage unit 13. Further, the control unit 16 reads the stored image data from the storage unit 13 when the playback button 1a of the operation unit 15 is operated, and instructs the display unit 14 to reproduce the read image data as a video.

  Returning to FIG. 1, the fire alarm 3 is installed on the ceiling or wall of an apartment house or a general house, detects a fire that has occurred at the installation location, and warns the resident. At that time, a fire detection signal notifying that is transmitted to the intercom base unit 1. As the fire alarm 3, for example, a thermal or smoke fire alarm for a house is used.

  The camera device 4 is installed on a ceiling of an apartment house or a general house, and as shown in FIG. 3, an imaging unit 41, a storage unit 42, a communication unit 43, and a control unit 44 are provided. I have.

  The imaging unit 41 is configured by a CCD (Charge Coupled Device Image Sensor) camera, a CMOS (Complementary Metal Oxide Semiconductor) camera, and the like. Output as data.

  The storage unit 42 is configured by a first-in first-out (FIFO) memory that can be read and written by a first-in first-out method, and stores image data for a predetermined time. Then, after holding the image data for a predetermined period, the storage unit 42 overwrites with the new image data in order from the oldest image data.

  The communication unit 43 receives an image request signal transmitted by the intercom base unit 1 when a fire detection signal is received. In addition, the communication unit 43 transmits image data to the intercom base unit 1.

  The control unit 44 sequentially stores the image data from the imaging unit 41 in the storage unit 42. Further, the control unit 44 reads the past image data stored when the image request signal from the interphone master unit 1 is received from the storage unit 42, and reads the read past image data and the current image from the imaging unit 41. The communication unit 43 is instructed to transmit data to the intercom base unit 1.

  Next, image transmission processing of the camera device 4 will be described with reference to FIG.

  The image transmission process of the camera device 4 is started at the timing when the power of the camera device 4 is turned on and the initial operation is completed, and the process proceeds to step S101.

  In step S101, the imaging unit 41 captures an image within the monitoring range at the installation location, and outputs the captured image to the control unit 44 as image data. Thereafter, the processing proceeds to step S102.

  In step S <b> 102, the control unit 44 stores the image data from the imaging unit 41 in the storage unit 42. Thereafter, the process proceeds to step S103.

  In step S103, the control unit 44 determines whether or not the communication unit 43 has received an image request signal from the interphone master unit 1. If the image request signal from the intercom base unit 1 has not been received, the process returns to step S101. Thereby, the past image data up to a predetermined time before being imaged at a predetermined cycle is stored in the storage unit 42. On the other hand, if the image request signal is received from the intercom base unit 1, the process proceeds to step S104.

  In step S <b> 104, the control unit 44 reads the stored past image data from the storage unit 42. Thereafter, the process proceeds to step S105.

  In step S105, the control unit 44 instructs the communication unit 43 to transmit the read past image data and the current image data from the imaging unit 41 to the interphone base unit 1, and the communication unit 43 performs the interphone base unit 1 transmission. The image data is transmitted to. As a result, image data from a predetermined time before receiving the image request signal from the interphone master unit 1 to the present is transmitted to the interphone master unit 1. That is, as shown in FIG. 5, when the image request signal from the interphone master unit 1 is received at time t0, the interphone master unit 1 receives images from time t1 to time t0 that are T hours before time t0. Data will be transmitted. Thereafter, the process returns to step S101.

  Next, the image storing process of the intercom base unit 1 will be described with reference to FIG.

  The image saving process of the intercom base unit 1 is started at the timing when the power of the intercom base unit 1 is turned on and the initial operation is completed, and the process proceeds to step S201.

  In step S <b> 201, the control unit 16 determines whether the alarm reception unit 11 has received a fire detection signal from the fire alarm 3. And a process progresses to step S202 at the timing which received the fire detection signal from the fire alarm 3.

  In step S <b> 202, the control unit 16 instructs the communication unit 12 to transmit an image request signal to the camera device 4, and the communication unit 12 transmits the image request signal to the camera device 4. Thereby, the image data from the predetermined time before transmitting the image request signal to the camera device 4 until the present time is transmitted to the intercom base unit 1 by the image transmission processing of the camera device 4 described above. That is, image data from a predetermined time before receiving the fire detection signal from the fire alarm device 3 to the present is transmitted to the intercom master unit 1. Thereafter, the process proceeds to step S203.

  In step S <b> 203, the control unit 16 determines whether the communication unit 12 has received the image data from the camera device 4. And a process progresses to step S204 at the timing which received the image data from the camera apparatus 4. FIG.

  In step S <b> 204, the control unit 16 stores the image data received by the communication unit 12 in the storage unit 13. As a result, image data from a predetermined time before receiving the fire detection signal from the fire alarm device 3 to the present is stored in the storage unit 13. In the case where there are a plurality of camera devices 4, only the image data of the camera device 4 that is most appropriately arranged with respect to the fire site may be stored. Thereafter, the process returns to step S201.

  Next, video reproduction processing of the intercom base unit 1 will be described with reference to FIG.

  The video reproduction process of the intercom base unit 1 is started at the timing when the power of the intercom base unit 1 is turned on and the initial operation is completed, and the process proceeds to step S301.

  In step S301, the control unit 16 determines whether or not the playback button 1a of the operation unit 15 has been operated. And a process progresses to step S302 at the timing when the reproduction | regeneration button 1a of the operation part 15 was operated.

  In step S <b> 302, the control unit 16 reads out the image data stored by the above-described image storage process from the storage unit 13. Thereafter, the processing proceeds to step S303.

  In step S303, the control unit 16 instructs the display unit 14 to reproduce the read image data as a video, and the display unit 14 displays the image data in a predetermined cycle to reproduce it as a video. Thereby, on the screen 1b of the liquid crystal display provided on the front surface of the interphone master unit 1 shown in FIG. 1, the images of the camera device 4 from the predetermined time before the fire alarm 3 detects the fire to the present are displayed. It will be.

  As is apparent from the above description, according to an embodiment of the present invention, images of the camera device 4 from a predetermined time before the fire alarm 3 detects a fire to the present are provided on the front surface of the intercom master unit 1. Since the image is displayed on the screen 1b of the liquid crystal display, it is possible to identify the cause of the fire by grasping the on-site situation before the fire is detected, and to prevent the occurrence of a fire due to the same cause.

  According to one embodiment of the present invention, since the image data of the camera device 4 from the predetermined time before the fire alarm 3 detects a fire to the present is stored in the intercom master unit 1, after the fire is dealt with You can check the situation before and after the fire. In the present embodiment, the fire alarm 3 and the camera device 4 are configured separately. However, the embodiment is not limited to this, and the fire alarm 3 is used instead of the fire alarm 3 and the camera device 4. The camera device 4 may be integrated, that is, a fire alarm with a camera function may be used. Even in this case, the same effect as the present embodiment can be obtained.

  As mentioned above, although one embodiment to which the invention made by the present inventor is applied has been described, the present invention is not limited by the discussion and the drawings that form part of the disclosure according to this embodiment. That is, it is added that other embodiments, operation techniques, examples, and the like made by those skilled in the art based on the present embodiment are all included in the scope of the present invention.

1 is a system configuration diagram illustrating a configuration of an intercom system according to an embodiment of the present invention. It is a block diagram which shows the structure of the intercom main unit which concerns on one Embodiment of this invention. It is a block diagram which shows the structure of the camera apparatus which concerns on one Embodiment of this invention. It is a flowchart which shows the image transmission process of the camera apparatus which concerns on one Embodiment of this invention. It is a flowchart which shows the image preservation | save process of the intercom main unit which concerns on one Embodiment of this invention. It is a flowchart which shows the image | video reproduction | regeneration processing of the intercom main unit which concerns on one Embodiment of this invention. It is a time chart for demonstrating the image data transmitted to an intercom main unit.

Explanation of symbols

1 Intercom master unit 11 Alarm receiver (fire detection receiver)
12 Communication unit (image receiving means)
13 Storage unit (received image storage means)
14 Display (Video playback means)
15 Operation section (video playback means)
16 Control unit (received image storage means and video reproduction means)
2 Door phone slave unit 3 Fire alarm device 4 Camera device 41 Imaging unit (image imaging means)
42 storage unit (past image storage means)
43 Communication unit (image transmission means)
44 control unit (past image storage means and image transmission means)

Claims (2)

An intercom system having an interphone master unit, a fire alarm, and a camera device,
The camera device is
Image capturing means for capturing images within a monitoring range at the installation location at a predetermined period;
Past image storage means for storing past image data captured by the image capturing means from a predetermined time before to immediately before;
Image transmission means for transmitting past image data stored by the past image storage means and current image data captured by the image imaging means to an interphone master unit;
The intercom base unit is
Detection signal receiving means for receiving a fire detection signal from the fire alarm;
Image receiving means for receiving the image data from the camera device after the detection signal receiving means has received a fire detection signal;
An intercom system comprising: video reproduction means for reproducing the image data received by the image reception means as a video by displaying the image data. The intercom system according to claim 1, wherein the interphone master unit includes a received image storage unit that stores the image data received by the image receiving unit.

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