JP6317627B2 - Intercom device - Google Patents

Description

  The present invention relates to an interphone device, and more particularly to an interphone device that blinks illumination means of an entrance cordless handset when a security sensor detects an abnormality.

  There is an intercom device that uses illumination means for night photography provided in an entrance cordless handset for security purposes. For example, in Patent Document 1, the entrance cordless handset is provided with a human sensor, and when the human touch sensor detects a suspicious person appearing at the entrance, the camera lighting LED blinks to intimidate, and the entrance cordless handset camera is activated. An intercom apparatus that records a captured image in a room master is disclosed.

JP 2009-182039 A

In the above-mentioned Patent Document 1, when a suspicious person is detected, an operation of intimidating by blinking the LED is performed. However, since the LED that is normally lit blinks at the time of camera shooting at night, video recording is difficult and linked to lighting. A still image was recorded to record the captured image.
In addition, when the handset device itself detects a suspicious person and determines the presence of the suspicious person, the handset control unit controls the lighting means to blink, so control by the room base unit is not necessary, and simple control is possible.

  On the other hand, there is a demand for not only detecting an abnormality at a front door but also blinking illumination means in the front door unit when a security sensor such as a window sensor connected to the parent unit detects an abnormality. In order to realize this operation, it will be performed by controlling the living room master, but in order to perform reliable control, a response check is performed when a control command is sent from the living room master to the entrance child machine. There is a problem that communication is desirable and the communication circuit becomes complicated and the cost is high.

  Therefore, in view of such problems, the present invention can be implemented with simple control even when the parent unit performs control for blinking the illumination means of the entrance child machine, and further, the blinking of the illumination means and the entrance child machine camera. An object of the present invention is to provide an intercom apparatus that can satisfactorily record captured images.

In order to solve the above-mentioned problems, the invention of claim 1 is an intercom apparatus comprising an entrance cordless handset for a visitor to call a resident and make a call, and a room base set for the resident to respond to the call. In
The entrance cordless handset includes a camera for imaging a visitor, illumination means for night photography, a brightness determination unit for judging nighttime, and an illumination control unit for controlling the illumination means. ,
The living room master unit includes a security input unit that connects a security sensor that detects an abnormality occurrence, a recording unit that stores a captured image of the camera, and activates the camera when the security sensor detects an abnormality occurrence, and the recording And a security control unit that performs flashing control of the illumination means,
The blinking control of the illumination means according to the security control unit, one that will be implemented in a one-way communication to the entrance door station,
Even if the security control unit performs blinking control of the illumination unit, the illumination control unit turns on the illumination unit to record the captured image of the camera when the brightness determination unit determines that it is nighttime. Priority is given, and when the recording is performed for a certain period of time, the lighting means starts blinking .
According to this configuration, since the blinking of the illumination means of the entrance unit is controlled by one-way communication from the living room master unit to the entrance unit, the communication circuit can be simplified.
In addition, since the lighting means is not blinked at night at the end of the recording until the recording is finished, a clear video can be recorded, and the occurrence of the abnormality due to the blinking illumination means can be notified. Therefore, when a suspicious person is at the front door, it can be recorded reliably even at night, and the occurrence of an abnormality can be notified outside the dwelling unit.

According to a second aspect of the present invention, in the configuration according to the first aspect, the blinking control of the lighting means by the security control unit is performed by continuously transmitting a blinking command at a constant interval. The lighting means starts blinking when a predetermined number of blinking commands are received, and the blinking is terminated when no blinking command is received for a certain period of time.
According to this configuration, even if the control is a one-way communication from the occupant parent device to the entrance child device, even if a blink command is received by mistake due to noise or the like, it does not operate, and the blink command is sent from the occupant parent device. It will not blink unless it is sent, and the blinking operation of the entrance unit will surely end when the blink command is stopped. Therefore, reliable control can be performed.

According to a third aspect of the present invention, in the configuration according to the first or second aspect , the living room base unit has a security setting means for shifting to a security mode in which the security sensor is in an active state, and the security control unit is switched to the security mode. In response to this transition operation, the completion of the transition is notified by at least one of a report sound at the entrance cordless handset and blinking of the illumination means.
According to this configuration, the completion of the crime prevention setting can be recognized at the entrance, and the resident can go out with peace of mind.

  According to the present invention, since the lighting unit blinking control is performed by one-way communication from the living room master unit to the entrance slave unit, the communication circuit can be simplified. Further, since the lighting means is not blinked at the time of occurrence of the abnormality until the end of the recording at night, the video can be recorded clearly and the abnormality occurrence at the entrance can be notified.

It is a block diagram which shows an example of the intercom apparatus based on this invention, and showed the apparatus with the circuit block diagram.

  DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments embodying the present invention will be described below in detail with reference to the drawings. FIG. 1 is a configuration diagram of an intercom device according to the present invention. 1 is an entrance cordless device that is installed outside a dwelling unit such as a front door so that a visitor calls a resident, and 2 is an entrance cordless device installed inside the dwelling unit. 1 is a room master for responding to a call from 1, and both are connected by a transmission line L composed of two lines.

  The front cordless handset 1 includes a call button 11, a microphone 12a and a speaker 12b for calling, a sound processing circuit 12 for processing a sound signal to be transmitted and received, a camera 13 for imaging a visitor, and a brightness built in the camera 13. The determination circuit 14, the video processing circuit 15 that performs transmission control such as modulation processing of the video signal output from the camera 13, the LED 16 used as night illumination and warning means, the LED drive circuit 17 that drives the LED 16, and the blinking of the LED 16 In addition to the control, a slave CPU 18 that controls each part of the entrance slave 1, a communication processing circuit 19 for communicating with the living room master 2, and the like are provided.

  The room master unit 2 includes an operation unit 21 that performs a response operation and various setting operations in response to a call from the entrance slave unit 1, a microphone 22a and a speaker 22b for talking with a visitor, and a voice processing circuit 22 that processes a voice signal to be transmitted and received. , An LCD monitor 23 for displaying a captured image of the camera 13, a data storage unit 24 for storing an image, an emergency button 25 for notifying the outside of the occurrence of an abnormality, a security sensor such as a human sensor or a window sensor (not shown) ), A video processing circuit 27 for demodulating the received video signal, a master CPU 28 for controlling each part of the living room master unit 2, and a communication processing circuit 29 for communicating with the entrance slave unit 1. Etc.

The operation of the intercom apparatus configured as described above is as follows. However, the call operation of the entrance slave device 1 in which the call button 11 is operated, and the operation of the room master device 2 in which the operation unit 21 is responded by receiving the call are the same as those in the related art, so the description is omitted here. The security operation will be mainly described.
The master CPU 28 shifts to a crime prevention mode by a predetermined crime prevention setting operation of the operation unit 21. When the security mode is entered, a security sensor (not shown) connected to the security input unit 26 is turned on, and when an abnormality is detected, an abnormality detection signal is transmitted to the security input unit 26 of the room base unit 2. For example, a window sensor attached to the window detects when the window is opened and transmits an abnormality detection signal to the security input unit 26.

This crime prevention setting operation is performed when the resident is absent due to going out or the like, and when the room master unit 2 is set to the crime prevention mode, the entrance slave unit 1 is notified of the completion of the setting. Specifically, the master unit CPU 28 causes the entrance slave unit 1 to perform blinking control of the LED 16 for a predetermined time to cause the entrance slave unit 1 to perform a notification operation that the transition to the crime prevention mode is completed. By this operation, the completion of the crime prevention setting is notified at the entrance, so that the resident can recognize it at the entrance and can go out safely.
The notification operation for the completion of the crime prevention setting may be notified by sounding the speaker 12b of the front door 1 or by both blinking of the LED 16 and sounding.

  Upon receiving the abnormality detection signal, the base unit CPU 28 issues a warning sound to the front door unit 1 and causes the LED 16 to blink. Note that the alarm sound and the flashing of the LED 16 can be performed by pressing the emergency button 25, and this operation is performed when the resident recognizes the occurrence of some abnormality and wants to notify the outside. Is done. In addition, the base unit CPU 28 that has received the abnormality detection signal by shifting to the crime prevention mode starts imaging of the camera 13 of the front door unit 1 and records the captured video, that is, stores the video in the data storage unit 24. carry out.

  Hereinafter, the operation when the room master unit 2 in the crime prevention mode state receives the abnormality detection signal from the security sensor will be specifically described. The room base unit 2 that has received the abnormality detection signal issues an alarm sound from its own speaker 22 b under the control of the base unit CPU 28. Then, an alarm sound is issued to the entrance terminal 1 and the LED 16 is blinked, and the camera 13 is further activated to record a captured image.

Specifically, the alarm sound is, for example, “P ...”, and the alarm sound is reported from the speaker 22b under the control of the master unit CPU 28, and the sound signal is transmitted to the entrance terminal 1. In addition, an activation signal of the camera 13 is transmitted. However, the activation signal of the camera 13 is a drive voltage, and the camera 13 starts imaging by boosting the power supply voltage of the front door unit 1 superimposed on the transmission line L from the living room master unit 2.
In the standby state, a constant voltage of, for example, 6 volts is supplied as the standby voltage from the living room master unit 2 to the entrance slave unit 1, but the driving voltage of the camera 13 is higher than this voltage, for example, 15 volts. . Therefore, imaging is started by increasing the voltage superimposed on the transmission line L to a predetermined value at which the camera 13 is activated.
The supply of the drive voltage is performed for a predetermined time under the control of the master CPU 28, and the captured video of the activated camera 13 is transmitted to the living room master 2 via the video processing circuit 15 and the transmission line L, and the master signal receiving the video signal is transmitted. The machine CPU 28 causes the data storage unit 24 to record.
Thereafter, when a predetermined time elapses, the electric circuit voltage decreases to a standby voltage, and the imaging of the camera 13 ends.

  In addition, when the camera 13 starts imaging, the brightness determination circuit 14 determines the brightness, and if it is determined that it is nighttime, the LED 16 is turned on by the control of the slave CPU 18, and the LED 16 is turned on until the camera 13 stops imaging. Lighting continues.

On the other hand, the blinking of the LED 16 is as follows. The master CPU 28 transmits a blinking instruction command for blinking the LED 16 to the entrance terminal 1 together with the boost of the DC voltage superimposed on the transmission line L. This blinking instruction command is output continuously for a predetermined time.
The slave CPU 18 determines that the blinking command has been transmitted and starts the blinking control of the LED 16 when the blinking instruction command is received a predetermined number of times within a specific time (for example, 2 seconds). However, as described above, when the LED 16 is turned on for imaging by the camera 13, the blinking control is not performed until the imaging is completed.
Then, the slave CPU 18 outputs a blink signal to the LED drive circuit 17 and starts blinking the LED 16 when the predetermined time has elapsed and the camera 13 has finished imaging. However, if the LED 16 is not lit, a blinking signal is output to the LED drive circuit 17 when it is determined that a blinking command has been transmitted.

The duration of the blink instruction command transmitted by the master CPU 28 is set to be longer than a predetermined time for the camera 13 to continue imaging, and the LED 16 is reliably blinked even at night. The command transmission ends, and the blinking of the LED 16 also ends. At this time, if the slave CPU 18 does not receive the blink command for a specific time (for example, 2 seconds), the slave CPU 18 determines that the blink is finished and finishes the blink control.
Also, the transmission of the sound signal is terminated in accordance with the end of the blinking instruction command, and the alarm sound reporting is also terminated.

As described above, since the blinking of the LED 16 of the entrance slave unit 1 is controlled by unidirectional communication from the living room master unit 2 to the entrance slave unit 1, the communication circuit can be simplified. For example, even an inexpensive CPU that does not have a serial communication function (UART) recognizes a received command by using a short data command of about 3 bits at a low bit rate of about 30 bps and performing a regular interval scan of a general-purpose port. Thus, the communication function can be realized, and the cost of the slave CPU 18 can be reduced. Note that the control for causing the camera 13 of the entrance cordless handset 1 to perform an imaging operation is a unidirectional control that is conventionally performed by supplying a camera driving voltage from the living room base unit 2 to the entrance cordless handset 1, and is complicated communication. Is not necessary.
Even if the blinking control of the LED 16 is a one-way communication from the living room main unit 2 to the front door unit 1, even if a blinking command is erroneously received once due to noise or the like, the LED 16 does not operate and blinks from the living room main unit 2. As long as the command is not transmitted, it does not blink, and when the blink command is stopped, the blinking operation of the LED 16 surely ends. Therefore, reliable control can be performed.
In addition, since the LED 16 as a lighting means associated with the occurrence of abnormality does not blink at night until the end of recording, the video can be recorded clearly. Therefore, when a suspicious person is at the front door, it can be recorded reliably even at night, and the occurrence of an abnormality can be notified outside the dwelling unit.
Furthermore, since the entrance cordless handset 1 performs a notification operation of the completion of the crime prevention setting, it can be recognized at the entrance, and the resident can go out in peace.

  Although the LED 16 blinks and the alarm sound is received in response to the abnormality detection signal, the notification operation may be only the blinking of the LED 16. Further, the control by the above-described unidirectional communication can further improve the noise resistance performance by constructing a simple moving average filter in the shift register in the slave CPU 18.

  1 .. Entrance cordless handset, 2 .... Living room master, 11 .... Call button, 13 .... Camera, 14 .... Brightness judgment circuit (brightness judgment unit), 16 .... LED (lighting means), 18 .... -Slave CPU (lighting control unit), 21-Operation unit (crime prevention setting means), 24-Data storage unit (recording unit), 25-Emergency button, 26-Security input unit, 28-Master unit CPU (security control unit).

Claims (3)

In an intercom device equipped with an entrance cordless handset for a visitor to call a resident and make a call, and a living room base phone for a resident to respond to the call,
The entrance cordless handset includes a camera for imaging a visitor, illumination means for night photography, a brightness determination unit for judging nighttime, and an illumination control unit for controlling the illumination means. ,
The living room master unit includes a security input unit that connects a security sensor that detects an abnormality occurrence, a recording unit that stores a captured image of the camera, and activates the camera when the security sensor detects an abnormality occurrence, and the recording And a security control unit that performs flashing control of the illumination means,
The blinking control of the illumination means according to the security control unit, one that will be implemented in a one-way communication to the entrance door station,
Even if the security control unit performs blinking control of the illumination unit, the illumination control unit turns on the illumination unit to record the captured image of the camera when the brightness determination unit determines that it is nighttime. The intercom apparatus is characterized in that the lighting unit starts blinking when priority is given and the recording is performed for a predetermined time . The flashing control of the lighting means by the security control unit is performed by continuously transmitting a flashing command at a constant interval,
The lighting control unit starts flashing of the lighting unit when receiving a predetermined number of the flashing commands within a predetermined time, and ends the flashing when not receiving the flashing command for a predetermined time. Item 5. An intercom device according to Item 1. The living room master unit has a security setting means for shifting to a security mode in which the security sensor is in an active state,
The security control unit, in response to an operation for shifting to the crime prevention mode, notifies the completion of the transition by at least one of a report sound at the entrance slave unit and blinking of the illumination means. Or the intercom apparatus of 2 .

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