JP4315065B2 - Housing information board - Google Patents

Description

  The present invention relates to a housing information board.

  In recent years, housing information panel systems have become widespread in apartment houses and other apartments. Such a housing information panel system is installed in each dwelling unit, a lobby intercom installed at the common entrance of an apartment house, an alarm monitoring panel (or integrated panel) installed in a management room, a disaster prevention monitoring room, etc. It is composed of a housing information board and a door phone unit installed outside the entrance (entrance) of each dwelling unit. The housing information panel is equipped with a call function for making calls with the lobby intercom, door phone slave unit or alarm monitoring panel, and safety devices such as fire detectors and gas leak alarms installed in the dwelling units and signal lines. Via an alarm signal from one of the safety devices to notify the occurrence of an abnormality, and at least the occurrence of an abnormality and an alarm sound or an alarm message corresponding to the type of the abnormality are generated and And a security function for notifying the type (see, for example, Patent Document 1). There is also provided a home information board having a voice call function for making a voice call (hands-free call) using a microphone and a speaker instead of a handset.

Here, in the housing information panel equipped with the loudspeaker call function, it is arbitrary depending on the return path on the acoustic side formed by the acoustic coupling of the microphone and the speaker or the return path on the line side formed with the other party's call terminal. If a closed loop in which the loop gain in the frequency component of the frequency exceeds 1 is formed in the communication system, howling may occur at the frequency. Therefore, in order to prevent such howling, the communication state (transmission) State, reception state) at all times, and a voice switch for inserting a loss into the signal path on the transmission side and reception side with an appropriate distribution based on the estimation result.
Japanese Patent Laid-Open No. 11-195183

  By the way, some safety devices connected to the housing information panel not only output a notification signal to the housing information panel when an abnormality occurs but also generate an alarm sound. The volume of the alarm sound produced by this type of safety device is generally much larger than that of human speech, etc. When the distance between the safety device and the housing information panel is relatively close, the volume near the microphone of the housing information panel is 90 dB. It may be about. For this reason, in the voice switch that estimates the call state by comparing the signal level of the transmitted signal and the received signal, the level of the alarm sound emitted by the safety device is very high. Even if a call signal (received signal) is transmitted from the terminal, there is a risk that the received signal will not be heard from the speaker (continuous fall to the transmitting side) due to the fact that the transmitted state is not switched from the transmitted state to the received state. . In the event of a fire or a gas leak, the call instruction from the alarm monitoring panel should be reliably transmitted to the dwelling unit, and the reception signal to the dwelling unit (house information panel) needs to be delivered more reliably.

  The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a housing information panel capable of listening to a received signal through a speaker even in a situation where a safety device emits an alarm sound at a high volume. There is.

In order to achieve the above-mentioned object, the invention of claim 1 is installed in each dwelling unit of the apartment house, door phone cords installed outside the dwelling unit, lobby intercom installed in the common entrance of the apartment house, A call function for making a call with an alarm monitoring panel installed in a control room and the like, and a notification signal for automatically or manually informing the occurrence of an abnormality when the safety of a resident is threatened by being installed in a dwelling unit 1 When connected to multiple types of safety devices and receiving a notification signal from any of the safety devices, at least an abnormality occurs and an alarm sound or an alarm message corresponding to the type of the abnormality is generated and an abnormality occurs in the alarm monitoring panel And a housing information board with a security function for notifying the type, microphones and speakers, and transmission signals collected by the microphones in the doorphone sub-unit and lobby Loss is inserted into the transmission path from the microphone to the transmission processing means, and to the transmission processing means for sending the reception signal transmitted from the doorphone handset, lobby intercom or alarm monitoring board to the speaker. The transmission path loss insertion means, the reception path loss insertion means for inserting loss into the reception path from the transmission processing means to the speaker, the speech state is estimated by observing the transmission signal and the reception signal, and the estimation result Based on the insertion loss amount control means for distributing the predetermined total loss amount to the insertion loss amount by the transmission path loss insertion means and the insertion loss amount by the reception path loss insertion means, and one or a plurality of types of safety devices are abnormal. sometimes itself an alarm state detection means for warning sound emitted safety device detects that output the broadcast signal, the alarm state detection means distribution of the safety device Upon detection of a signal output, characterized in that the insertion loss control means has a receiving signal amplifying means for amplifying a received signal to be observed.

In order to achieve the above-mentioned object, the invention of claim 2 is installed in each dwelling unit of the apartment house, door phone cords installed outside the dwelling unit, lobby intercom installed in the common entrance of the apartment house, A call function for making a call with an alarm monitoring panel installed in a control room and the like, and a notification signal for automatically or manually informing the occurrence of an abnormality when the safety of a resident is threatened by being installed in a dwelling unit 1 When connected to multiple types of safety devices and receiving a notification signal from any of the safety devices, at least an abnormality occurs and an alarm sound or an alarm message corresponding to the type of the abnormality is generated and an abnormality occurs in the alarm monitoring panel And a housing information board with a security function for notifying the type, microphones and speakers, and transmission signals collected by the microphones in the doorphone sub-unit and lobby Loss is inserted into the transmission path from the microphone to the transmission processing means, and to the transmission processing means for sending the reception signal transmitted from the doorphone handset, lobby intercom or alarm monitoring board to the speaker. The transmission path loss insertion means, the reception path loss insertion means for inserting loss into the reception path from the transmission processing means to the speaker, the speech state is estimated by observing the transmission signal and the reception signal, and the estimation result Based on the insertion loss amount control means for distributing the predetermined total loss amount to the insertion loss amount by the transmission path loss insertion means and the insertion loss amount by the reception path loss insertion means, and one or a plurality of types of safety devices are abnormal. An alarm state detecting means for detecting that a safety device that emits an alarm sound sometimes outputs a notification signal, and a microphone among the communication devices, Caller device that is easy to acoustically connect with the speaker, and caller device that is difficult to acoustically connect the microphone and speaker to the other party model specifying means, and the alarm state detecting means is a notification signal output of the safety device If the other party's call device specified by the partner model specifying means is difficult to acoustically couple, the total loss amount setting means for reducing the total loss amount compared to a model that is easily acoustically coupled. It is characterized by comprising.

According to a third aspect of the present invention, in the second aspect of the present invention, when the alarm state detection means detects the notification signal output of the safety device, the transmission signal attenuates the transmission signal observed by the insertion loss amount control means. Signal attenuation means is provided.

In order to achieve the above object, the invention of claim 4 replaces the transmission signal attenuating means in the invention of claim 3 with the alarm state detecting means detecting the notification signal output of the safety device. The insertion loss amount control means includes a cutting means for cutting a signal path for observing a transmission signal.

According to the first aspect of the present invention, when the alarm state detection means detects that the safety device that emits an alarm sound by itself when the abnormality occurs, the alarm state detection means detects the insertion loss amount control means. As the received signal is amplified, it becomes easier for the insertion loss control means to estimate the call state as the received state, and as a result, the received signal is heard through the speaker even when the safety device emits an alarm sound at a high volume. There is an effect that can be.

According to the invention of claim 2 , when the alarm state detection means detects that a safety device that emits an alarm sound by itself when an abnormality occurs outputs an alarm signal, a call in which a microphone and a speaker are likely to be acoustically coupled among the communication devices. If the other party's model identification means identifies which model of the call device that is difficult to acoustically couple with the device, microphone, and speaker, and the identified partner's call device is a model that is difficult to acoustically couple, Since the loss amount setting means reduces the total loss amount as compared with a model that is easily acoustically coupled, the total loss amount that is inserted into the transmission path and the reception path decreases, leading to a loss of heads or continuous fragmentation. In addition to being able to suppress the occurrence of problems such as falling down, the received signal can be heard through the speaker even when the safety device emits an alarm sound at a high volume. Also in the voice of a small volume there is an effect that can be transmitted to the other call devices.

According to the invention of claim 3 , in addition to the effect of the invention of claim 2 , when the alarm state detection means detects that the safety device that emits an alarm sound when an abnormality occurs outputs an alarm signal, the insertion loss amount control Since the transmission signal observed by the means is attenuated by the transmission signal attenuation means, the insertion loss amount control means can easily estimate the call state as the reception state, and the safety device emits an alarm sound at a high volume. There is also an effect that the reception signal can be surely heard through the speaker.

According to the invention of claim 4 , when the alarm state detection means detects that the safety device that emits an alarm sound by itself when the abnormality occurs, the alarm state detecting means detects that the microphone and the speaker are likely to be acoustically coupled. If the other party's model identifying means identifies which model of the call device that is difficult to acoustically couple with the device, microphone, and speaker, the other party's call device is a model that is difficult to acoustically couple. The total loss amount setting means reduces the total loss amount and attenuates the transmission signal observed by the insertion loss amount control means by the transmission signal attenuation means as compared with the case of a model that is easy to combine. By reducing the total amount of loss that is inserted into the listening path, it is possible to reduce the occurrence of problems such as word breaks and continuous fallover, and the insertion loss amount control means It is easier to estimate the talk state, and even when the safety device emits an alarm sound at a high volume, it is possible to listen to the received signal through the speaker, and even a low-volume sound can be transmitted to the other party's call device. effective.

Before describing the embodiment of the present invention, a reference example having the same basic configuration as the embodiment of the present invention will be described below.
FIG. 2 shows a system configuration example of a home information board system using the home information board A of this reference example . This system includes a lobby intercom 60 installed at a common entrance of a housing complex, an alarm monitoring panel 80 installed in a management room of the housing complex, a housing information panel A installed in each dwelling unit, A door phone 50 installed outside (front door). Then, the alarm monitoring panel 80 and the housing information panel A of each dwelling unit use a communication line L1 for multiplex transmission of audio signals such as call voices and alarm sounds and video signals picked up by the television camera included in the lobby intercom 60, calls and alarms. Are connected by a control line L2 for multiplex transmission of control signals such as. In this system, the configuration in which the video signal and the audio signal are multiplexed and transmitted is exemplified, but the video signal may be transmitted through an independent video transmission line.

  The lobby intercom 60 includes a signal processing unit (not shown) including a CPU as a main component, an operation unit 61 including a numeric keypad and a call button, a display unit 62 including a display lamp and a liquid crystal display, and a control line. A transmission / reception unit (not shown) that transmits and receives control signals to and from the alarm monitoring panel 80 via L2, a microphone 63 and a speaker 64, and a housing information panel A and an alarm monitoring panel using the microphone 63 and the speaker 64 A speech control unit (not shown) for performing a loudspeaking call with 80, a television camera (not shown) having an image sensor such as a CCD, and an output of the television camera are signal-processed to generate a video signal. A video signal processing unit (not shown) to be output, an audio signal output from the call control unit, and a video signal output from the video signal processing unit are multiplexed and transmitted to the communication line L1. And it includes input and output processing unit for outputting a sound signal transmitted through the communication line L1 to the call control unit (not shown).

  On the other hand, the alarm monitoring panel 80 includes a signal processing unit (not shown) having a CPU as a main component, an operation unit 81 having a numeric keypad and a call button, and a display unit 82 having a display lamp and a liquid crystal display. A transmission / reception unit (not shown) for transmitting / receiving a control signal to / from each home information panel A and lobby intercom 60 via the control line L2, a handset 83, and a home using the handset 83 A call control unit (not shown) for performing simultaneous calls with the information board A and the lobby intercom 60 is provided.

  The door phone sub unit 50 includes a microphone and a speaker and is connected to the house information board A via the call line L3. When the call button 57a is operated, the voltage level of the call line L3 is changed to change to the house information board A. In contrast, it has a function of sending a call signal.

  In the housing information board A, a monitor unit 40 made of a CRT or a liquid crystal display is provided at the upper front of the housing, and a response button 41 is provided at the lower front of the housing. When an image sent from the lobby intercom 60 via the communication line L1 is displayed on the monitor unit 40, when the response button 41 is operated in response to a call from the door phone slave unit 50, the lobby intercom 60, or the alarm monitoring panel 80. The call function of the house information panel A is activated, and a loudspeaking call is performed with the door phone slave unit 50, the lobby intercom 60, or the alarm monitoring panel 80. The home information panel A is connected to various safety devices such as a fire detector S1, a gas / CO detector S2, a security external set switch SW, a security switch SW1, a call switch SW2, an emergency switch SW3, etc. When a notification signal is received from the device, an alarm sound or a warning message is generated according to the occurrence of an abnormality and the type of abnormality that has occurred (fire, gas leakage, carbon monoxide concentration increase, emergency call, etc.) and the alarm monitoring panel 80 Is notified of the occurrence and type of abnormality via the control line L2.

  On the other hand, when the alarm monitoring panel 80 receives a notification signal from any one of the housing information panels A through the control line L2, the alarm monitoring panel 80 identifies the address added to the notification signal and outputs the notification signal A. The management unit or the like is informed of an abnormality by identifying and displaying the dwelling unit number where the house information panel A is installed on the display unit 83 and simultaneously outputting an alarm sound. Then, if an administrator who knows that the abnormality has occurred off-hooks the handset of the alarm monitoring panel 80, a communication path via the communication line L1 is forcibly formed between the house information panel A that has output the notification signal, It is possible to confirm the abnormal situation and safety by calling with the resident of the dwelling unit where the abnormality has occurred.

FIG. 1 is a block diagram showing a main part configuration of a housing information board A of this reference example . As shown in FIG. 1, the housing information board A of this reference example transmits the microphone 1 and the speaker 2 and the transmission signal collected by the microphone 1 to the door phone slave 50, the lobby intercom 60, or the alarm monitoring board 80. At the same time, the transmission processing unit 3 sends out the reception signal transmitted from the doorphone slave unit 50, the lobby intercom 60 or the alarm monitoring panel 80 to the speaker 2, and the transmission which inserts a loss into the transmission path from the microphone 1 to the transmission processing unit 3. A speech path loss insertion unit 4; a reception path loss insertion unit 5 that inserts a loss into the reception path from the transmission processing unit 3 to the speaker 2; Based on the estimation result, a predetermined total loss amount Lt is distributed to the insertion loss amount ILT by the transmission path loss insertion unit 4 and the insertion loss amount ILR by the reception path loss insertion unit 5. An input loss amount control unit 6, a first amplifier 7 that is provided in a transmission path between the microphone 1 and the transmission path loss insertion unit 3, amplifies a transmission signal, a reception path loss insertion unit 4, and a speaker 2. The second amplifier 8 is provided in the receiving path between the two and amplifies the received signal, and the second amplifier 8 is provided in the transmitting path between the transmission path loss inserting unit 4 and the transmission processing unit 3 to amplify the transmitted signal. 3, the fourth amplifier 10 provided in the reception path between the transmission processing section 3 and the reception path loss insertion section 5 for amplifying the reception signal, and the transmission signal input to the insertion loss amount control section 6 The attenuator 11 inserted in the signal path and the safety device (for example, the fire detector S1 and the gas / CO detector S2) that emits an alarm sound in the event of an abnormality among one or more types of safety devices generate a notification signal. Alarm state detection means 12 for detecting the output and alarm state detection means 1 Changes the attenuation amount (insertion loss amount) of the attenuator 11 from 0 decibels to a predetermined value when the notification signal output of the safety device (fire detector S1 or gas / CO detector S2) is detected. Attenuator control means for attenuating the transmission signal observed by the control unit 6. Here, the transmission path loss insertion unit 4, the reception path loss insertion unit 5, and the insertion loss amount control unit 6 constitute a voice switch VSW. The voice switch VSW can be configured by an analog integrated circuit, or can be realized by controlling hardware such as a DSP (Digital Signal Processor) with software (program) for the voice switch.

  The insertion loss amount control unit 6 compares the signal level of the transmission signal amplified by the first amplifier 7 and the reception signal amplified by the fourth amplifier 10, and the signal level of the transmission signal is, for example, that of the reception signal. If it is greater than the signal level, the transmission state is estimated and the insertion loss amount in the transmission path loss insertion unit 4 is reduced, while the insertion loss amount in the reception path loss insertion unit 5 is increased. Conversely, the signal level of the reception signal is transmitted. If it is higher than the signal level of the speech signal, it is estimated that the voice signal is received, and the amount of insertion loss in the reception path loss insertion unit 5 is reduced, and at the same time, the amount of insertion loss in the transmission path loss insertion unit 4 is increased. . However, the total amount of loss inserted into the transmission path and the reception path is always constant.

  Here, the house information panel A detects a call signal from the door phone slave unit 50, the lobby intercom 60 or the alarm monitor panel 80 and outputs a call sound from the speaker 2, and an alarm monitor panel via the control line L2. A communication function for transmitting / receiving control signals to / from 80, a security function for monitoring a notification signal output from the safety device and outputting an alarm sound or reporting to the alarm monitoring panel 80 when the notification signal is received. However, these functions are realized by a control unit (not shown) having a CPU as a main component, and the alarm state detection means 12 and the attenuator control means 13 are also realized by the control unit. .

  Thus, when a safety device (for example, fire detector S1 and gas / CO detector S2) that emits an alarm sound when an abnormality occurs is connected to the housing information panel A, as described in the related art. In a situation where the safety device emits an alarm sound at a high volume, the alarm sound is collected by the microphone 1 of the house information panel A, so that the signal level of the transmission signal becomes very high, and the voice switch VSW. Therefore, there is a possibility that the received signal transmitted from the alarm monitoring panel 80 is attenuated by the insertion loss of the receiving path loss inserting unit 5 and cannot be heard from the speaker 2. is there.

However, in this reference example , when the alarm state detection means 12 detects that such a safety device has output a notification signal, a detection signal is output from the alarm state detection means 12 to the attenuator control means 13, and this detection signal is received. Since the attenuator control means 13 changes the attenuation amount of the attenuator 11 from 0 dB to a predetermined value to reduce the signal level of the transmission signal observed by the insertion loss amount control unit 6, the insertion loss amount control unit of the voice switch VSW 6 can easily estimate the call state as the reception state. As a result, the reception signal transmitted from the alarm monitoring panel 80 can be heard through the speaker 2 even in a situation where the safety device emits an alarm sound at a high volume.

(Embodiment 1 )
FIG. 3 is a block diagram showing a main configuration of the housing information board A according to the present embodiment. However, the same components as those in the reference example are denoted by the same reference numerals and description thereof is omitted.

  In the present embodiment, in place of the attenuator 11 and the attenuator control means 13, the reception signal amplifier 14 inserted in the signal path for inputting the reception signal to the insertion loss amount control unit 6 and the alarm state detection means 12 include the safety device ( When the notification signal output of the fire detector S1 or the gas / CO detector S2) is detected, the insertion loss amount control unit 6 observes by changing the amplification degree (gain) of the reception signal amplifier 14 from 0 dB to a predetermined value. There is a feature in that it is provided with gain control means 15 for increasing the received signal.

Thus, in this embodiment, when the alarm state detection means 12 detects that the safety device has output a notification signal, a detection signal is output from the alarm state detection means 12 to the gain control means 15, and the detection signal , The gain control means 15 changes the amplification level of the reception signal amplifier 14 from 0 dB to a predetermined value to increase the signal level of the reception signal observed by the insertion loss amount control unit 6, so that the insertion loss of the voice switch VSW is increased. It becomes easy for the volume control unit 6 to estimate the call state as the reception state. As a result, similarly to the reference example , the reception signal transmitted from the alarm monitoring panel 80 can be heard through the speaker 2 even in a situation where the safety device emits an alarm sound at a high volume.

(Embodiment 2 )
By the way, among the communication devices such as the doorphone slave unit 50, the lobby intercom 60, or the alarm monitoring panel 80 that are the other party of the house information panel A, the doorphone slave unit 50 and the lobby interphone 60 are not equipped with a handset in the same manner as the house information panel A. Although the voice call is made without using it, the alarm monitoring board 80 uses the handset 83 to make a non-voice call. Therefore, when a call is made between the house information board A and the intercom 50 or the lobby interphone 60, acoustic coupling is likely to occur between the microphone and the speaker in the intercom 50 or the lobby interphone 60, so that howling is prevented. In addition, it is necessary to increase the total loss Lt in the voice switch VSW of the house information board A to some extent. However, when talking between the house information panel A and the alarm monitoring panel 80, since the microphone and the speaker in the alarm monitoring panel 80 are incorporated in the handset 83, it is difficult for acoustic coupling to occur between them. If the total loss amount Lt in the VSW does not need to be increased so much, if the total loss amount Lt is about the same as that during the loud voice call, the voice switch VSW does not smoothly switch the call state, so There is a risk that problems such as continuous falling to the talk side may occur. In this respect, it is not limited to the problem only during normal telephone calls. In particular, when a fire occurs or a gas leaks, the call instruction from the alarm monitoring panel 80 should be transmitted to the dwelling unit, and the dwelling to the dwelling unit (housing information board A) will be received. The signal needs to be delivered more reliably.

Therefore, in the present embodiment, in order to solve the above problem, as shown in FIG. 4, any type of telephone equipment in which a microphone and a speaker are easily acoustically coupled and a telephone equipment in which a microphone and a speaker are hardly acoustically coupled is shown. Model identification means 16 for identifying whether the person is a call partner and the alarm model detection means 12 when the alarm signal output from the safety device (fire detector S1 or gas / CO detector S2) is detected. If the partner telephone device specified by the means 16 is a model that is difficult to acoustically couple, a total loss amount setting means 17 that reduces the total loss Lt compared to a model that is easily acoustically coupled is provided. There are features. However, since the basic configuration is the same as that of the reference example , common constituent elements are denoted by the same reference numerals and description thereof is omitted.

  As described above, the door phone slave unit 50 changes the voltage level of the communication line L3 to send a calling signal to the house information panel A, and the lobby intercom 60 and the alarm monitoring panel 80 transmit via the control line L2. A call signal is sent to the housing information board A as a control signal. Therefore, when a call is started on the housing information panel A, it is considered that the call is made with the call device that sent the call signal immediately before that, so when the call type signal is detected in the partner model specifying means 16, the call of the sender is detected. By identifying the device, the model of the other party's call device is specified. For example, when a call signal sent via the call line L3 is detected, the call device of the other party is the door phone cord 50, so that it can be identified as a model that can be easily coupled, and the call signal sent via the control line L2 Based on the address of the included transmission source, it is determined whether the other party's call device is the lobby intercom 60 or the alarm monitoring panel 80. The type of the other party's telephone equipment can be specified, such as a model that is difficult to acoustically couple. The counterpart model specifying means 16 and the total loss amount setting means 17 are realized by the control unit.

  When the alarm state detection means 12 detects the notification signal output of the safety device (fire detector S1 or gas / CO detector S2), the model specified by the counterpart model specifying means 16 is difficult to acoustically couple. If there is, the total loss amount setting means 17 gives a switching command to the insertion loss amount control unit 6 of the voice switch VSW, and the insertion loss amount control unit 6 receiving this switching command decreases the total loss amount Lt from the initial value. If the specified model is easy to be acoustically coupled, the total loss amount setting unit 17 performs processing for returning the total loss amount Lt to the initial value. That is, as shown in FIG. 5, when the model of the other party's telephone equipment is easily acoustically coupled, the total loss Lt is set to a relatively large initial value as shown by the broken line a, When the type of the telephone equipment is difficult to acoustically couple, the total loss Lt is reduced from the initial value as shown by the solid line B, or the total loss Lt is set to substantially zero as shown by the one-dot broken line C. The

  As described above, in this embodiment, when the alarm state detection means 12 detects the notification signal output of the safety device (fire detector S1 or gas / CO detector S2), the partner model specifying means 16 uses the model of the other party. And the total loss amount Lt of the voice switch VSW is set to an appropriate value according to the model for which the total loss amount setting means 17 is specified. In a call with the lobby intercom 60), howling can be suppressed as usual, and in a call with a model (alarm monitoring panel 80) in which the microphone and the speaker are difficult to be acoustically coupled, the total number inserted in the transmission path and the reception path is By reducing the loss amount Lt, it is possible to suppress the occurrence of problems such as the continuous fall of the voice switch VSW and the beginning of words, and the safety device. There can hear the received signal through the speaker 2 even under circumstances that an alarm sound at high volume. When the insertion loss amount control unit 6 sets the total loss amount Lt to zero, if the other party's communication device is difficult to acoustically couple (for example, the alarm monitoring panel 80 using a handset), the volume is small. There is an advantage that even voice can be transmitted to the other party's call device.

(Embodiment 3 )
FIG. 6 is a block diagram showing a main part configuration of the housing information board A of the present embodiment. However, the same components as those in the reference example and the second embodiment are denoted by the same reference numerals and description thereof is omitted.

The present embodiment is characterized in that the counterpart model specifying means 16 and the total loss amount setting means 17 in the second embodiment are added to the reference example .

Thus, in this embodiment, when the alarm state detection means 12 detects the notification signal output of the safety device (fire detector S1 or gas / CO detector S2), the partner model specifying means 16 selects the model of the other party. By specifying the total loss amount Lt of the voice switch VSW to an appropriate value in accordance with the specified model, the total loss amount setting unit 17 has the same effect as the second embodiment, and at the same time, the attenuator control unit 13 changes the attenuation amount of the attenuator 11 from 0 dB to a predetermined value to reduce the signal level of the transmission signal observed by the insertion loss amount control unit 6, so that the insertion loss amount control unit 6 of the voice switch VSW is in a call state. Can be estimated as a receiving state, and the receiving signal transmitted from the alarm monitoring panel 80 is surely heard through the speaker 2 even when the safety device emits an alarm sound at a high volume. It is what it is. Further, it is desirable that the predetermined value for changing the attenuation amount of the attenuator 11 by the attenuator control means 13 is infinite, and the signal level of the transmission signal observed by the insertion loss amount control unit 6 is made substantially zero. As shown in FIG. 7, it is obvious that the same effect can be obtained even if the counterpart model specifying means 16 and the total loss amount setting means 17 are added to the configuration of the first embodiment.

(Embodiment 4 )
FIG. 8 is a block diagram showing a main configuration of the housing information board A of the present embodiment. However, the same components as those in the third embodiment are denoted by the same reference numerals, and description thereof is omitted.

  In this embodiment, instead of the attenuator 11 and the attenuator control means 13, the switch means 18 for opening and closing the signal path for inputting the transmission signal to the insertion loss amount control unit 6 and the alarm state detection means 12 are notified of the safety device. It is characterized in that it includes a disconnect control means 19 for opening the switch means 18 and disconnecting the signal path when a signal output is detected.

Thus, in this embodiment, when the alarm state detection means 12 detects that the safety device has output a notification signal, a detection signal is output from the alarm state detection means 12 to the disconnection control means 19, and this detection signal Since the disconnection control means 19 that receives the signal opens the switch means 18 and the signal path for inputting the transmission signal to the insertion loss amount control section 6 is disconnected, the insertion loss amount control section 6 of the voice switch VSW changes the communication state. It becomes easy to estimate the reception state, and even when the safety device emits an alarm sound at a high volume, the reception signal transmitted from the alarm monitor panel 80 can be heard through the speaker 2 and the sound of a low volume can be heard. However, it can be communicated to the alarm monitoring panel 80. Further, in the same way as in the second embodiment, in a call with a model in which the microphone and the speaker are easily acoustically coupled (the doorphone cordless handset 50 or the lobby interphone 60), howling can be suppressed as usual, and the microphone and the speaker are acoustically coupled. In a call with a difficult model (alarm monitoring panel 80), the total loss Lt inserted in the transmission path and the reception path is reduced, thereby suppressing the occurrence of problems such as the continuous fall of the voice switch VSW and the end of the word. It is something that can be done.

It is a block diagram which shows the principal part structure of the reference example of this invention . It is a system configuration | structure figure of the housing information panel system containing the same as the above. FIG. 2 is a block diagram illustrating a main configuration of the first embodiment. FIG. 6 is a block diagram illustrating a main configuration of the second embodiment. It is operation | movement explanatory drawing same as the above. FIG. 10 is a block diagram illustrating a main configuration of a third embodiment. It is a block diagram which shows the other principal part structure same as the above. FIG. 6 is a block diagram illustrating a main configuration of a fourth embodiment.

DESCRIPTION OF SYMBOLS 1 Microphone 2 Speaker 3 Transmission processing part 4 Transmission path loss insertion part 5 Receive path loss insertion part 6 Insertion loss amount control part 11 Attenuator 12 Alarm state detection means 13 Attenuator control means

Claims (4)

Calls are made between doorphones installed inside each dwelling unit of the apartment and outside the dwelling unit, lobby intercom installed at the common entrance of the apartment, and alarm monitoring panel installed in the management room of the apartment Connected to one or a plurality of types of safety devices that automatically or manually notify the occurrence of an abnormality when the safety of the resident is threatened by being installed in a dwelling unit. In a housing information board provided with a security function for generating an alarm sound or a warning message corresponding to the occurrence of an abnormality and the type of the abnormality upon receiving a notification signal from the alarm, and notifying the occurrence and type of the abnormality to the alarm monitoring panel , A microphone and a speaker, and a transmission signal collected by the microphone is transmitted to a door phone child unit, a lobby intercom or an alarm monitoring panel. A transmission processing means for sending a reception signal transmitted from a door phone slave unit, a lobby intercom or an alarm monitoring panel to a speaker, a transmission path loss insertion means for inserting a loss into a transmission path from the microphone to the transmission processing means, A path loss insertion unit that inserts a loss into a channel from the transmission processing unit to the speaker, and a speech state is estimated by observing a transmission signal and a reception signal. Based on the estimation result, a predetermined total loss amount is calculated. An insertion loss amount control unit that distributes the insertion loss amount by the transmission path loss insertion unit and the insertion loss amount by the reception path loss insertion unit, and a safety device that emits an alarm sound when an abnormality occurs among one or more types of safety devices There an alarm condition detecting means for detecting that output the broadcast signal, when the alarm state detection means detects the broadcast signal output of the safety device, the insertion loss system Housing information panel, characterized in that a receiving signal amplifying means for amplifying the reception signal means is observed. Calls are made between doorphones installed inside each dwelling unit of the apartment and outside the dwelling unit, lobby intercom installed at the common entrance of the apartment, and alarm monitoring panel installed in the management room of the apartment Connected to one or a plurality of types of safety devices that automatically or manually notify the occurrence of an abnormality when the safety of the resident is threatened by being installed in a dwelling unit. In a housing information board provided with a security function for generating an alarm sound or a warning message corresponding to the occurrence of an abnormality and the type of the abnormality upon receiving a notification signal from the alarm, and notifying the occurrence and type of the abnormality to the alarm monitoring panel , A microphone and a speaker, and a transmission signal collected by the microphone is transmitted to a door phone child unit, a lobby intercom or an alarm monitoring panel. A transmission processing means for sending a reception signal transmitted from a door phone slave unit, a lobby intercom or an alarm monitoring panel to a speaker, a transmission path loss insertion means for inserting a loss into a transmission path from the microphone to the transmission processing means, A path loss insertion unit that inserts a loss into a channel from the transmission processing unit to the speaker, and a speech state is estimated by observing a transmission signal and a reception signal. Based on the estimation result, a predetermined total loss amount is calculated. An insertion loss amount control unit that distributes the insertion loss amount by the transmission path loss insertion unit and the insertion loss amount by the reception path loss insertion unit, and a safety device that emits an alarm sound when an abnormality occurs among one or more types of safety devices An alarm state detecting means for detecting that a notification signal has been output, and a communication device and a microphone in which a microphone and a speaker are easily acoustically coupled among the communication devices. And the mating model specifying means for emission and the speaker to identify which of the types of telephone communication apparatus is difficult to acoustic coupling is the communication partner, partner model specifying means when the alarm state detection means detects the broadcast signal output of the safety device If the other party's call device specified in (2) is a model that is difficult to acoustically couple, a total loss amount setting unit that reduces the total loss amount compared to a model that is easily acoustically coupled is provided. Housing information board. When the alarm state detection means detects the broadcast signal output of the safety device, according to claim 2, characterized in that with a transmission signal attenuating means for attenuating a transmission signal in which the insertion loss control means observes The listed housing information board. In place of the transmission signal attenuation means in the invention of claim 3, a signal for the insertion loss amount control means to observe the transmission signal when the alarm state detection means detects the notification signal output of the safety device. residential information panel, characterized in that it comprises a cutting means for cutting the path.

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