JP6145876B2 - Intercom device - Google Patents

Description

  The present invention relates to an intercom apparatus.

  Conventionally, intercom devices used in apartment houses have interphone master units installed in each dwelling unit, and can communicate with shared unit devices (lobby interphones) installed in the common entrance (lobby) of apartment houses. (For example, refer to Patent Document 1).

JP 2005-117470 A

  By the way, it is conceivable that the interphone master unit of the interphone device is operated by supplying power from a power source or the like provided in the shared unit. Due to the nature of the intercom device, telephone calls are not frequently performed, so the interphone master unit has a lot of time to be in a standby state. In consideration of this point, interphone master units that operate from the power source provided in the common unit device set the number of connected units assuming the power consumption assuming that most units are in a standby state.

  However, if more power than expected is generated due to confirmation of images stored in the interphone master unit, user setting operations, etc., for example, the interphone master unit stops all operations, or the shared device and the interphone master unit There is a possibility that the call between the two will be stopped in the middle, and there is room for improvement in terms of convenience.

  The present invention has been made to solve the above-described problems, and an object thereof is to provide an intercom apparatus that can improve convenience.

  In order to solve the above-described problem, an interphone device includes a voltage measurement unit that measures a voltage value of a supply voltage, and when the supply voltage falls below a predetermined fail-safe value, the interphone master device shifts to a low power consumption mode. At this time, while maintaining the operation of the interphone master unit in operation, the interphone master unit is operated as the supply voltage is decreased within the range of the failsafe value or less for the newly started interphone master unit. And a control unit that restricts automatically.

In the above configuration, it is preferable that the control unit includes notification means for notifying that the operation of the intercom base unit is restricted when the mode is shifted to the low power consumption mode.
In the above configuration, it is preferable that the restriction on the operation of the intercom base unit includes prohibition of a new call.

In the above configuration, it is preferable that the restriction on the operation of the intercom base unit includes turning off the display unit or lowering the luminance of the display unit.
In the above configuration, it is preferable that the notification means notifies by voice.

  According to the intercom apparatus of the present invention, convenience can be improved.

It is a schematic block diagram of the intercom system in 1st Embodiment. It is a block diagram of the intercom system in the same as the above. It is explanatory drawing for demonstrating a restriction | limiting mode. It is a flowchart for demonstrating an example of the test at the time of construction. It is a flowchart for demonstrating the face-safe operation | movement at the time of system operation. It is a block diagram of the intercom system in a 2nd embodiment. It is a flowchart for demonstrating an example of the test at the time of construction. It is a flowchart for demonstrating the face-safe operation | movement at the time of system operation. It is a flowchart for demonstrating the face-safe operation | movement at the time of system operation. It is explanatory drawing for demonstrating a corresponding | compatible mode table and a threshold value.

Hereinafter, a first embodiment of an intercom system will be described with reference to the drawings.
As shown in FIG. 1, the intercom system according to the present embodiment includes a common unit device (lobby interphone) 10 installed in a common entrance (lobby) of an apartment house, and a plurality of units installed in each dwelling unit of the apartment house. Interphone base unit 20 is provided. Furthermore, the intercom system includes a dwelling unit (door phone) 40 installed at the exterior entrance (outdoor) of each dwelling unit.

  As shown in FIG. 1, the shared unit device 10 is connected to the trunk line TL. The trunk line TL is provided with a plurality of branching devices B, and the intercom master unit 20 is connected to the branching lines (dwelling unit lines) BL branched by the branching devices B. Furthermore, the intercom base unit 20 and the dwelling unit 40 are connected by a handset connection line CL.

[Common equipment (lobby intercom)]
As shown in FIGS. 1 and 2, the shared device 10 includes an imaging unit 11, a voice input unit 12, a voice output unit 13, a dwelling unit number input unit 14, a dwelling unit number display unit 15, and a call button 16. And have.

  The imaging unit 11 images a visitor's face and the like, and includes an imaging element such as a CCD image sensor or a CMOS image sensor, a lens, and a video signal processing circuit. The video signal processing circuit generates a digital video signal such as a YUV format from the output signal of the image sensor.

The voice input unit 12 is configured by a microphone or the like, for example, and can input a visitor's voice.
The audio output unit 13 is configured by a speaker or the like, for example, and can output a voice from the interphone master unit 20 described later.

  The dwelling unit number input unit 14 is configured with, for example, a numeric keypad or a touch panel, and a visitor can input the dwelling unit number of the visited dwelling unit. The call button 16 is a button for calling the dwelling unit number input to the dwelling unit number input unit 14.

The dwelling unit number display unit 15 displays the dwelling unit number input to the dwelling unit number input unit 14 and notifies the visitor.
As shown in FIG. 2, the shared device 10 includes a communication unit 17 that communicates audio and video through the trunk line TL and the branch line BL, and a lobby control unit 18 that performs various controls.

  The lobby control unit 18 of the shared unit device 10 stores dwelling unit information that is a relationship between the address assigned to the interphone master unit 20 of each dwelling unit and the dwelling unit number of the dwelling unit. And the lobby control part 18 collates the dwelling unit number input in the dwelling unit number input part 14 of the shared part apparatus 10 with dwelling unit information, and converts it into an address. Further, the lobby control unit 18 stores the address in the destination address field and stores the call command for notifying the call from the shared unit device 10 in the data field, and the video information or audio input of the imaging unit 11. The packet storing the voice information of the unit 12 in the data field is sent to the trunk line TL via the communication unit 17.

  As shown in FIG. 2, the common unit device 10 includes a lobby power source 19 for supplying power to the common unit device 10 and each interphone master unit 20. The lobby power supply 19 is connected to a commercial power supply and operates as a 48V DC power supply, for example.

[Dwelling unit (door phone unit)]
As shown in FIG. 2, the dwelling unit 40 includes a dwelling unit 40 a having an imaging unit 41 and a dwelling unit 40 b having no imaging unit, and any of the dwelling units 40 a and 40 b is also imaged. Except for the presence or absence of the portion 41, the general configuration is the same. For this reason, the dwelling unit 40a which has an imaging part mainly is demonstrated.

As shown in FIG. 2, the dwelling unit 40 a includes an imaging unit 41, a voice input unit 42, a voice output unit 43, a call button 44, a communication unit 45, and a slave unit control unit 46.
The imaging unit 41 images a visitor's face and the like, and includes an imaging element such as a CCD image sensor or a CMOS image sensor, a lens, a video signal processing circuit, and the like. The video signal processing circuit generates a digital video signal such as a YUV format from the output signal of the image sensor.

  The voice input unit 42 is constituted by a microphone or the like, for example, and can input a visitor's voice. The audio output unit 43 is configured by a speaker or the like, for example, and can output a voice from the interphone master unit 20 described later. The call button 44 is a button for performing a call to the intercom master unit 20 connected by the slave unit connection line CL.

The subunit | mobile_unit control part 46 can exchange image information, audio | voice information, etc. with the intercom main unit 20 connected by the subunit | mobile_unit connection line CL via the communication part 45 in the dwelling unit subunit 40a.
[Intercom base unit]
As shown in FIGS. 1 and 2, the interphone master unit 20 includes a video display unit 21, an audio input unit 22, an audio output unit 23, a volume switch button 24, a brightness switch button 25, and a call button 26. And an unlock button 27, a parent device control unit 28, and communication units 29 and 30.

  The video display unit 21 is, for example, a liquid crystal monitor, and displays video information captured by the imaging unit 11 of the shared unit device 10 or video information captured by the imaging unit 41 of the dwelling unit 40. Each video information is sent as a packet to each line TL, BL, CL, and the information is appropriately processed by the communication units 29, 30 and the parent device control unit 28 and displayed on the video display unit 21. .

The voice input unit 22 is constituted by a microphone or the like, for example, and can input a resident's voice.
The audio output unit 23 is configured by, for example, a speaker or the like, and can output a voice from the shared unit device 10 or the dwelling unit 40 side.

  The volume switching button 24 is a volume of a visitor's voice input to the voice input unit 12 of the common unit device 10 or the voice input unit 42 of the dwelling unit 40, the call button 16 of the common unit device 10, or the dwelling unit 40. The volume of the ringing tone when the call button 44 is pressed is adjusted.

The brightness switching button 25 is for adjusting the luminance of the video display unit 21.
The call button 26 is used when talking to a visitor in front of the shared device 10 or a visitor in front of the dwelling unit 40.

The unlock button 27 is for unlocking (opening / closing) the common entrance of the apartment house (not shown).
The base unit control unit 28 exchanges video information, audio information, and the like with the common unit device 10 or the dwelling unit 40 connected by the lines TL, BL, and CL via the communication units 29 and 30 in the interphone base unit 20. It is possible. In addition, when the above-described call button 26 is operated by a resident (operator of the intercom master device 20), the master device control unit 28 displays a video captured by the imaging unit 41 on the video display unit 21. Have

  As shown in FIG. 2, the intercom base unit 20 includes a power supply unit 31 connected to the lobby power supply 19 through a power supply line PSL. The power supply unit 31 is connected to the lobby power supply 19 and supplies power to each unit in the intercom base unit 20.

  The power supply unit 31 is connected to a voltage measurement unit 32 that measures a supply voltage supplied to the interphone master unit 20. The voltage measuring unit 32 is electrically connected to the parent device control unit 28 and outputs the measurement result of the supply voltage to the parent device control unit 28.

  Here, a correspondence mode table in which the range of the supply voltage and the operation mode are associated and stored is stored in a memory (not shown). Then, the base unit control unit 28 determines which supply voltage range the voltage value measured by the voltage measurement unit 32, acquires the corresponding operation mode with reference to the corresponding mode table, and supplies The intercom base unit 20 is operated in an operation mode corresponding to the voltage.

  Here, the correspondence mode table used in the intercom base unit 20 of the present embodiment will be described. In the correspondence mode table, the operation mode is changed according to the difference in supply voltage. This correspondence mode table is stored in a storage unit (not shown) and is appropriately referred to by the parent device control unit 28.

  Furthermore, in the intercom base unit 20 of the present embodiment, two types of thresholds are set depending on whether the test is a construction test or the operation. That is, in this embodiment, the following two conditions exist. Note that the threshold value for the construction test (construction threshold value) is set to be generally higher than the threshold value for operation (operational threshold value). The construction threshold is calculated from the power that can be consumed by all terminals in the standby state with the maximum wiring length by connecting the interphone master unit 20 in the interphone system with the maximum number of connected units. What is shown is an example and varies depending on the specifications. The operating threshold is calculated from the power that can be consumed when the interphone system is in the most operating state, which is assumed within the specification range. The following values are examples and vary depending on the specifications. To do.

(Condition A1-1)
This is an operation mode in which the construction threshold is taken into consideration in the condition A1, and 40 V is set as the lower limit value of the construction threshold.

(Condition A1-2)
This is an operation mode in which the operating threshold value is considered in the condition A1, and 35 V is set as the lower limit value (fail safe value) of the operating threshold value.

  Further, as shown in FIG. 1, a fire alarm 60 is electrically connected to the intercom base unit 20 of the present embodiment. The fire alarm device 60 is installed in a dwelling unit and determines the presence or absence of a fire by detecting smoke or heat. The fire alarm device 60 is provided with a sound output unit that emits sound, and when a fire breaks out, the sound is informed to that effect. Further, when the fire alarm device 60 determines that a fire has occurred, the fire alarm device 60 outputs a signal to that effect to the interphone master unit 20, and a sound is also output from the audio output unit 23 of the interphone master unit 20 to notify that a fire has occurred. It is possible.

Next, a construction test from the construction of the intercom system configured as described above to the apartment house to the actual operation will be described.
As shown in FIG. 4, when the intercom system is installed in the apartment house (step S10), energization of the intercom system is started and the entire intercom system is operated (step S11). At this time, various initial processes are performed in the shared device 10 of the interphone system, the interphone master unit 20, and the like.

Next, base unit control unit 28 determines whether or not the measured voltage value (supply voltage value) measured by voltage measuring unit 32 is 40 V or more (step S20).
When the measured voltage value is 40 V or more (step S20: YES), the base unit control unit 28 determines that the construction is finished and starts operation in the operation mode of the condition A1-2 in which the operation threshold is set ( Step S40).

  On the other hand, when the measured voltage value is less than 40V (step S20: NO), the master unit control unit 28 has reached the supply voltage of the lobby power supply 19 has reached 40V, which is the construction threshold value (lower limit value) of the condition A1-1. Therefore, it is determined that the construction is abnormal (step S50). At this time, the base unit control unit 28 may output a warning sound or a message sound informing that the construction is abnormal from the voice output unit 13 of the shared unit device 10, for example. Thereafter, the power supply of the entire intercom system is turned off manually or automatically (step S51). Subsequently, it is reconstructed by the installer (step S52). Thereafter, a series of flow from step S11 is repeatedly performed until the operation becomes possible.

  Next, an example of the fail-safe operation when the intercom system construction test is finished and the operation is actually started will be described. Incidentally, in this embodiment, as shown in FIG. 3, three types of fail-safe operations of the restriction modes 1 to 3 are set depending on the measurement voltage, and the restriction mode 1, the restriction mode 2, and the restriction mode are set as the measurement voltage value decreases. The limit of operation is expanded in the order of 3.

Here, the restriction modes 1 to 3 will be described with reference to FIG. These are merely examples, and may be changed as appropriate according to specifications and the like.
[Restricted mode 1]
Playback of video and audio recorded when a call is made between the interphone master 20 and the shared device 10 or between the interphone master 20 and the dwelling unit 40 is prohibited. In addition, the video or audio recorded when the intercom master 20 of a specific dwelling unit is called by the shared unit 10 or the video or audio recorded when the intercom master 20 is called by the dwelling unit 40 Audio playback is prohibited.

Furthermore, the monitoring function is prohibited.
Further, changes in user settings such as brightness adjustment of the video display unit 21 by the brightness switching button 25 and volume adjustment of the ringing sound by the volume switching button 24 are prohibited.

[Restricted mode 2]
In addition to the restriction mode 1, the brightness of the video display unit 21 is changed to the lowest state within the range where the luminance is lit. Alternatively, the video display unit 21 is turned off.

[Restricted mode 3]
In addition to the restriction mode 2, the state is changed to the smallest state within the range of the sound output by the audio output unit 23. Alternatively, power supply (signal transmission) to the voice output unit 23 and the voice input unit 22 is prohibited, and a call is prohibited. This call prohibition is, for example, a prohibition of a new call between the shared unit 10 and the interphone base unit 20 or between the dwelling unit 40 and the interphone base unit 20. For this reason, for example, if a call is started between the shared device 10 and the interphone master unit 20 or between the dwelling unit 40 and the interphone master unit 20 in the previous stage of the restriction mode 3, regarding the call There are no restrictions.

  When the operation under the condition A1-2 is started in the determination of the construction test, the master unit control unit 28 operates the interphone system while periodically monitoring the measured voltage value measured by the voltage measuring unit 32. It has been continued.

  As shown in FIG. 5, the base unit control unit 28 selects a fail-safe operation (low power consumption mode) in which the operation is restricted or a normal operation without operation restriction depending on the measured voltage value (step S41).

  When the measured voltage value is higher than 35 V, which is the fail safe value of the condition A1-2, the parent device control unit 28 operates the interphone parent device 20 in a normal operation without operation restriction (step S42).

  When the measured voltage value is 35 V or less, which is the fail-safe value of condition A1-2, base unit control unit 28 operates interphone base unit 20 in a fail-safe operation (low power consumption mode) in which the operation is limited. .

At this time, for example, when the measured voltage value is 35V or less and higher than 33V, the parent device control unit 28 operates the interphone parent device 20 in the restriction mode 1 (step S43).
For example, when the measured voltage value is 33V or less and higher than 30V, the parent device control unit 28 operates the interphone parent device 20 in the restriction mode 2 in which the operation restriction number is larger than that in the restriction mode 1 (step S44). .

  For example, when the measured voltage value is 30 V or less, the parent device control unit 28 operates the interphone parent device 20 in the restriction mode 3 in which the operation restriction number is larger than that in the restriction mode 2 (step S45).

Next, the effect of this embodiment will be described.
(1) The operation of the interphone master unit 20 is limited step by step as the supply voltage decreases within the range of the fail safe value or less by the master unit control unit 28. For this reason, the required power in the intercom base unit 20 can be suppressed while maintaining the minimum necessary functions as the intercom base unit 20. As a result, the power supplied to the interphone base unit 20 is reduced, so that all functions of the interphone base unit 20 are prevented from suddenly becoming unusable, thereby contributing to the improvement of convenience.

  (2) When a transition is made to a fail-safe operation (low power consumption mode), a voice output unit 23 is provided to notify that the operation of the intercom master unit 20 is restricted, so that notification is made to residents, contractors, etc. Can do.

(3) Since the restriction of the operation of the interphone master unit 20 includes the restriction of a new call, the quality of an existing call can be ensured, which can contribute to an improvement in convenience.
(4) Since the restriction on the operation of the interphone master unit 20 includes turning off the video display unit 21 or lowering the luminance of the video display unit 21, the quality of the existing call can be ensured, which contributes to the improvement of convenience. be able to.

(5) By notifying the user by voice that the operation of the interphone master unit 20 is restricted during the fail-safe operation, it is easier to understand than a buzzer or the like.
(Second Embodiment)
Next, a second embodiment of the intercom system will be described with reference to the drawings.

  The intercom system according to the present embodiment is different from the intercom system according to the first embodiment in that it corresponds to a plurality of power supplies having different supply voltages. Therefore, this point will be mainly described in detail, and the first embodiment will be described. The same members as those in the embodiment are denoted by the same reference numerals and description thereof is omitted.

  As shown in FIG. 6, the intercom base unit 20 includes a power supply unit 31 connected to the lobby power supply 19 or the separate power supply 50 through a power supply line PSL. The power supply unit 31 is connected to a separate power supply 50 in addition to the lobby power supply 19 and supplies power to each unit in the interphone master unit 20. Incidentally, the separate power supply 50 is connected to a commercial power supply and operates as, for example, a 30V DC power supply.

  In the interphone master device 20 of the present embodiment, a correspondence mode table in which a plurality of supply voltage ranges and operation modes are associated and stored is stored in a memory (not shown). Then, the base unit control unit 28 determines which supply voltage range the voltage value measured by the voltage measurement unit 32, acquires the corresponding operation mode with reference to the corresponding mode table, and supplies The intercom base unit 20 is operated in an operation mode corresponding to the voltage.

  Here, the correspondence mode table used in the intercom base unit 20 of the present embodiment will be described. In the corresponding mode table, the operation mode is changed depending on the presence or absence of the imaging unit of the dwelling unit 40 according to the difference in power source or supply voltage used in the interphone master unit 20. This correspondence mode table is stored in a storage unit (not shown) and is appropriately referred to by the parent device control unit 28.

(Condition A1)
This is the case of power supply using the lobby power supply. In this case, the operation mode is the same whether it is a dwelling unit with an imaging unit or a dwelling unit without an imaging unit.

(Condition A2)
This is the case of power supply with a separate power source + unit of dwelling unit with image pickup unit.
(Condition A3)
This is a case of power supply with a separate power source + unit-less dwelling unit without image pickup unit.

  Furthermore, in the intercom base unit 20 of the present embodiment, two types of thresholds are set depending on whether the test is a construction test or the operation. Here, in this embodiment, in addition to the conditions A1-1 and A1-2 of the first embodiment, there are four patterns of conditions (total of six patterns) shown in FIG. Note that the threshold value for the construction test (construction threshold value) is set to be generally higher than the threshold value for operation (operational threshold value). The construction threshold is calculated from the power that can be consumed by all terminals in the standby state with the maximum wiring length by connecting the interphone master unit 20 in the interphone system with the maximum number of connected units. What is shown is an example and varies depending on the specifications. The operating threshold is calculated from the power that can be consumed when the interphone system is in the most operating state, which is assumed within the specification range. The following values are examples and vary depending on the specifications. To do.

(Condition A2-1)
This is an operation mode in which the construction threshold is considered in the condition A2, 33V is set as the upper limit value of the construction threshold, and 27V is set as the lower limit value of the construction threshold.

(Condition A2-2)
This is an operation mode in which the operating threshold value is considered in the condition A2, and 24V is set as the lower limit value (fail safe value) of the operating threshold value.

(Condition A3-1)
The condition A3 is an operation mode in which the construction threshold is taken into account, 33V is set as the upper limit of the construction threshold, and 25V is set as the lower limit of the construction threshold.

(Condition A3-2)
This is an operation mode in which the operation threshold is taken into consideration in the condition A3, and 18 V is set as the lower limit value (fail safe value) of the operation threshold.

Next, a construction test from the construction of the intercom system configured as described above to the apartment house to the actual operation will be described.
As shown in FIG. 7, when the intercom system is installed in the apartment house (step S10), energization of the intercom system is started and the entire intercom system is operated (step S11). At this time, various initial processes are performed in the shared device 10 of the interphone system, the interphone master unit 20, and the like. Moreover, when a voltage is first applied to each interphone master 20 of the interphone system, the master control unit 28 sets (selects) a construction threshold, and sets the construction threshold (condition A1-1 in the corresponding mode table). A2-1 and A3-1) are used for appropriate determination.

  Next, the base unit control unit 28 determines, for example, whether the dwelling unit 40 connected to the intercom base unit 20 has an imaging unit (step S12). As an example, for example, the intercom base unit 20 includes an enable switch, and it is determined whether the dwelling unit 40 connected in the state of the switch has an imaging unit.

(Test at the time of construction at the time of connection of the dwelling unit 40a with an imaging unit)
For example, when the dwelling unit 40 connected to the interphone base unit 20 has an imaging unit (step S12: YES), the base unit control unit 28 measures the measured voltage value (supply voltage value) measured by the voltage measurement unit 32. ) Is 40V or higher (step S20).

  When the measured voltage value is 40 V or more (step S20: YES), the base unit control unit 28 determines that the construction is finished and starts operation in the operation mode of the condition A1-2 in which the operation threshold is set ( Step S40).

On the other hand, when the measured voltage value is less than 40V (step S20: NO), the parent device control unit 28 determines whether or not the measured voltage value is 33V or more (step S21).
When the measured voltage value is 33 V or higher (step S21: YES), the parent device control unit 28 determines that the measured voltage value is equal to or higher than the supply voltage of the separate power supply 50 and is the supply voltage of the lobby power supply 19. However, since the supply voltage of the lobby power supply 19 has not reached 40V, which is the construction threshold value (lower limit) of the condition A1-1, it is determined that the construction is abnormal (step S50). At this time, the base unit control unit 28 may output a warning sound or a message sound informing that the construction is abnormal from the voice output unit 13 of the shared unit device 10, for example. Thereafter, the power supply of the entire intercom system is turned off manually or automatically (step S51). Subsequently, it is reconstructed by the installer (step S52). Thereafter, a series of flow from step S11 is repeatedly performed until the operation becomes possible.

On the other hand, when the measured voltage value is less than 33V (step S21: NO), the parent device control unit 28 determines whether or not the measured voltage value is 27V or more (step S22).
When the measured voltage value is 27 V or more (step S22: YES), the base unit control unit 28 determines that the construction is finished and starts operation in the operation mode of the condition A2-2 in which the operation threshold is set ( Step S70).

  On the other hand, when the measured voltage value is less than 27 V (step S22: NO), the parent device control unit 28 determines that the supply voltage of the separate power supply 50 is present. However, since the supply voltage of the separate power supply 50 has not reached 27 V, which is the construction threshold (lower limit) of the condition A2-1, it is determined that the construction is abnormal (step S60). At this time, the base unit control unit 28 may output a warning sound or a message sound informing that the construction is abnormal from the voice output unit 13 of the shared unit device 10, for example. Thereafter, the power supply of the entire intercom system is turned off manually or automatically (step S61). Next, it is reconstructed by the installer (step S62). Thereafter, a series of flow from step S11 is repeatedly performed until the operation becomes possible.

(Test at the time of construction when the dwelling unit 40b without the imaging unit is connected)
Further, when the dwelling unit 40 connected to the interphone base unit 20 has no imaging unit (step S30: NO), the base unit control unit 28 measures the measured voltage value (supply voltage value) measured by the voltage measurement unit 32. ) Is 40V or higher (step S30).

When the measured voltage value is 40 V or more (step S30: YES), the parent device control unit 28 starts operation in the operation mode of the condition A1-2 (step S40).
On the other hand, when the measured voltage value is less than 40V (step S30: NO), the parent device control unit 28 determines whether or not the measured voltage value is 33V or more (step S31).

  When the measured voltage value is 33 V or more (step S31: YES), the parent device control unit 28 determines that the measured voltage value is equal to or higher than the supply voltage of the separate power supply 50 and is the supply voltage of the lobby power supply 19. However, since the supply voltage of the lobby power supply 19 has not reached 40V, which is the construction threshold value (lower limit) of the condition A1-1, it is determined that the construction is abnormal (step S50). At this time, the base unit control unit 28 may output a warning sound or a message sound informing that the construction is abnormal from the voice output unit 13 of the shared unit device 10, for example. Thereafter, the power supply of the entire intercom system is turned off manually or automatically (step S51). Subsequently, it is reconstructed by the installer (step S52). Thereafter, a series of flow from step S11 is repeatedly performed until the operation becomes possible.

On the other hand, when the measured voltage value is less than 33V (step S31: NO), the parent device control unit 28 determines whether or not the measured voltage value is 25V or more (step S32).
When the measured voltage value is 25 V or more (step S22: YES), the base unit control unit 28 determines that the construction is finished and starts operation in the operation mode of the condition A3-2 in which the operation threshold is set ( Step S80).

  On the other hand, when the measured voltage value is less than 25 V (step S32: NO), the parent device control unit 28 determines that the supply voltage of the separate power supply 50 is present. However, since the supply voltage of the separate power supply 50 has not reached 25 V, which is the threshold (lower limit value) during construction of the condition A3-1, it is determined that the construction is abnormal (step S60). At this time, the base unit control unit 28 may output a warning sound or a message sound informing that the construction is abnormal from the voice output unit 13 of the shared unit device 10, for example. Thereafter, the power supply of the entire intercom system is turned off manually or automatically (step S61). Next, it is reconstructed by the installer (step S62). Thereafter, a series of flow from step S11 is repeatedly performed until the operation becomes possible.

  As described above, even if the power supplies 19 and 50 that can be supplied with different supply voltages are used, it is possible to determine whether or not the abnormal construction deviates from the specification range of each of the power supplies 19 and 50. The excess of the power supply capability at 50 can be suppressed.

  Next, an example of the fail-safe operation when the intercom system construction test is finished and the operation is actually started will be described. Incidentally, in this embodiment as well as in the first embodiment, three types of fail-safe operations of the limit modes 1 to 3 are set depending on the measurement voltage as shown in FIG. 3, and the limit mode 1, as the measurement voltage value decreases, The restriction of operation is expanded in the order of restriction mode 2 and restriction mode 3.

  When the operation under the condition A1-2 is started in the determination of the construction test, the master unit control unit 28 operates the interphone system while periodically monitoring the measured voltage value measured by the voltage measuring unit 32. It has been continued.

  As shown in FIG. 5, the base unit control unit 28 selects a fail-safe operation (low power consumption mode) in which the operation is limited or a normal operation without an operation limitation depending on the value of the measured voltage value (step S41). .

  When the measured voltage value is higher than 35 V, which is the fail safe value of the condition A1-2, the parent device control unit 28 operates the interphone parent device 20 in a normal operation without operation restriction (step S42).

  When the measured voltage value is 35 V or less, which is the fail-safe value of condition A1-2, base unit control unit 28 operates interphone base unit 20 in a fail-safe operation (low power consumption mode) in which the operation is limited. .

At this time, for example, when the measured voltage value is 35V or less and higher than 33V, the parent device control unit 28 operates the interphone parent device 20 in the restriction mode 1 (step S43).
For example, when the measured voltage value is 33V or less and higher than 30V, the parent device control unit 28 operates the interphone parent device 20 in the restriction mode 2 in which the operation restriction number is larger than that in the restriction mode 1 (step S44). .

  For example, when the measured voltage value is 30 V or less, the parent device control unit 28 operates the interphone parent device 20 in the restriction mode 3 in which the operation restriction number is larger than that in the restriction mode 2 (step S45).

  When the operation under the condition A2-2 is started in the judgment of the construction test, the master unit control unit 28 operates the interphone system while periodically monitoring the measured voltage value measured by the voltage measuring unit 32. It has been continued.

  As shown in FIG. 8, the base unit control unit 28 selects a fail-safe operation (low power consumption mode) in which the operation is limited or a normal operation without an operation limitation depending on the value of the measured voltage value (step S71). .

  When the measured voltage value is higher than 24V, which is the fail-safe value of Condition A2-2, the base unit control unit 28 operates the interphone base unit 20 in a normal operation without operation restriction (step S72).

  When the measured voltage value is equal to or lower than 24 V, which is the fail-safe value of condition A2-2, base unit control unit 28 operates interphone base unit 20 in a fail-safe operation (low power consumption mode) in which the operation is limited. .

At this time, for example, when the measured voltage value is 24V or less and higher than 22V, the parent device control unit 28 operates the interphone parent device 20 in the restriction mode 1 (step S73).
For example, when the measured voltage value is 22V or less and higher than 19V, the parent device control unit 28 operates the interphone parent device 20 in the restriction mode 2 in which the operation restriction number is larger than that in the restriction mode 1 (step S74). .

  For example, when the measured voltage value is 19 V or less, the parent device control unit 28 operates the interphone parent device 20 in the restriction mode 3 in which the operation restriction number is larger than that in the restriction mode 2 (step S75).

  Further, when the operation under the condition A3-2 is started in the judgment of the construction test, the master unit control unit 28 monitors the measurement voltage value measured by the voltage measurement unit 32 and periodically monitors the interphone system. Operation has been continued.

  As shown in FIG. 9, base unit control unit 28 selects a fail-safe operation (low power consumption mode) in which operation is restricted or a normal operation without operation restriction depending on the value of the measured voltage value (step S81). .

  When the measured voltage value is higher than 18V, which is the fail-safe value of Condition A3-2, base unit control unit 28 operates intercom base unit 20 in a normal operation with no operation restriction (step S82).

  When the measured voltage value is equal to or lower than 18V, which is the fail safe value of Condition A3-2, base unit control unit 28 operates interphone base unit 20 in a fail safe operation (low power consumption mode) in which the operation is limited. .

At this time, for example, when the measured voltage value is 18V or less and higher than 16V, the parent device control unit 28 operates the interphone parent device 20 in the restriction mode 1 (step S73).
For example, when the measured voltage value is 16 V or less and higher than 13 V, the parent device control unit 28 operates the interphone parent device 20 in the restriction mode 2 in which the operation restriction number is larger than that in the restriction mode 1 (step S84). .

  For example, when the measured voltage value is 13 V or less, the parent device control unit 28 operates the interphone parent device 20 in the restriction mode 3 having a larger operation restriction number than the restriction mode 2 (step S85).

  As described above, even when a plurality of power supplies having different voltages are connected, a fail-safe operation is possible. Furthermore, fail safe operation is possible by setting a threshold value for each of the dwelling unit 40a and the dwelling unit 40b having no imaging unit.

As described above, the second embodiment has the following effects in addition to the same effects as (1) to (5) of the first embodiment.
(6) In the corresponding mode table, for each of a plurality of different supplied voltages, the supply voltage range in a state where the dwelling unit 40b without the imaging unit is connected and the dwelling unit 40a with the imaging unit are connected. A plurality of supply voltage ranges in a state where the voltage drops are set. For this reason, it can be appropriately operated depending on the presence or absence of the imaging unit 41.

  (7) When the master unit control unit 28 becomes the fail safe value or less, the master unit control unit 28 shifts to the low power consumption mode that restricts the function of the interphone master unit 20, so that the power supply capability of each power source 19, 50 is not exceeded. The interphone master unit 20 can be operated.

  (8) As the fail-safe value, a construction threshold value and an operation threshold value lower than the construction threshold value are set. For this reason, the base unit control unit 28 appropriately changes the threshold value according to the test using the voltage required at the time of construction and the voltage required by the load on the system within the specification range assumed at the time of operation, and appropriately controls the interphone base unit 20. Can be operated.

In addition, you may change the said embodiment as follows.
In each of the above embodiments, the configuration has the three modes of the restriction modes 1 to 3, but other restriction modes (fail-safe operation) may be set. For example, as shown in FIG. 3, in addition to the function restriction in the restriction mode 3, the restriction mode 4 for prohibiting the volume and the alarm itself may be set for the function of alarming in conjunction with the fire alarm device 60.

  In addition, for example, in the fail-safe operation, when the fire alarm 60 detects a fire, the sound output unit 23 of the interphone master unit 20 outputs sound in conjunction with it, but the sound is output in conjunction with it. The configuration may be omitted.

  -In each said embodiment, although it was set as the structure which connects the fire alarm device 60 to the intercom main unit 20, it is not restricted to this, Even if the structure which cannot connect the fire alarm device 60 to the interphone main unit 20 is connected. Good.

  In each of the above embodiments, the video display unit 21, the volume switching button 24, and the brightness switching button 25 are configured separately, but the present invention is not limited thereto. For example, adopting a configuration that uses a touch panel, displays an image such as a volume switch or brightness switch button on the touch panel, and can switch the volume and brightness by pressing the image on the panel. Also good.

  In the second embodiment, the two power sources 19 and 50 are used. However, the present invention can be similarly applied to a system in which three or more power sources are assumed to be connected.

  DESCRIPTION OF SYMBOLS 19,50 ... Power supply, 20 ... Interphone main unit, 23 ... Audio | voice output part (notification means), 28 ... Main unit control part (control part), 32 ... Voltage measurement part, 40 ... Dwelling unit (door phone).

Claims (5)

A voltage measuring unit for measuring the voltage value of the supply voltage;
When the supply voltage falls below a predetermined failsafe value, when the interphone master unit is shifted to the low power consumption mode, an interphone master unit that starts a new operation is maintained while maintaining the operation of the interphone master unit that is operating. A control unit that limits the operation of the intercom base unit step by step as the supply voltage decreases in a range below the fail safe value,
An intercom device characterized by comprising: The intercom apparatus according to claim 1, wherein
The intercom apparatus comprising an informing means for informing that the operation of the interphone base unit is restricted when the mode is shifted to the low power consumption mode. The intercom apparatus according to claim 1 or 2,
The interphone device characterized in that the restriction of the operation of the interphone master unit includes restriction of a new call. The intercom apparatus according to claim 1, wherein
The interphone master device is characterized in that the restriction on the operation of the interphone base unit includes turning off the display unit or lowering the luminance of the display unit. In the intercom apparatus according to claim 3, wherein at least claim 3 or claim 2 quoting claim 2 or claim 2 is cited,
The intercom apparatus, wherein the notification means notifies by voice.