JP2023078399A - Receiver and fire notification facility - Google Patents

Abstract

To provide a receiver and a fire notification facility to reduce installation spaces, avoid individual display when calling fire, and improve operability of fire countermeasures and call connection by incorporating a function of emergency telephone facility into the receiver of the fire notification facility without impairing a function of maintenance telephone facility.SOLUTION: A receiver 10 for monitoring fire by connecting an analog fire detector 14 to a signal line 12-1 includes: a maintenance telephone circuit unit 62 for detecting an incoming call from a maintenance telephone handset 28 connected to a maintenance telephone circuit 24; an emergency telephone circuit unit 64 for detecting an incoming call from an emergency telephone handset 34 connected to an emergency telephone circuit 32; and a communication control unit 72 for controlling each of the calls via the maintenance telephone circuit 24 and the calls via the emergency telephone circuit 32, detecting the incoming call from the maintenance telephone handset 28 by the maintenance telephone circuit 24 and performing predetermined call control when detecting the incoming call from the emergency telephone handset 34 by the emergency telephone circuit 32.SELECTED DRAWING: Figure 1

Description

TECHNICAL FIELD The present invention relates to a fire alarm system equipped with an emergency telephone that is installed in a restricted area and is picked up in the event of a fire to issue a fire call and a maintenance telephone that is used during maintenance and inspection, and a receiver included in the fire alarm system.

Conventionally, a fire alarm system monitors fire by means of a fire detector connected to a signal line led out from a receiver, and outputs a fire alarm when a fire occurs.

In addition, the fire alarm system is equipped with a maintenance telephone system. The maintenance telephone facility connects the maintenance telephone line pulled out from the receiver to the telephone jack provided on the transmitter connected to the sensor line, and the maintenance telephone cordless handset carried by the maintenance personnel is connected to the transmitter. When it is plugged into the phone jack and connected, the receiver receives an incoming call for a maintenance call, and when the maintenance phone main unit is picked up, it is connected to the maintenance phone slave unit, allowing the person in charge on the receiver side to make the necessary contact. .

In addition, the installation of emergency telephone equipment is obligatory for facilities subject to fire prevention where emergency broadcasting equipment is installed.

The emergency telephone equipment has an emergency telephone cordless handset that has the same function as the transmitter in the fire alarm equipment, and is installed in the restricted area. Then, an emergency announcement will be made to the necessary floors by the emergency announcement equipment within a predetermined time. In addition, when the emergency telephone base unit is picked up in response to a call from the emergency telephone cordless handset, it is possible to talk with the caller on the cordless handset side and check the fire situation. Furthermore, when calls from a plurality of emergency telephone cordless handsets overlap, since the emergency telephone base unit has a function of arbitrarily selecting a call, even simultaneous calls can be handled.

Japanese Patent Application Laid-Open No. 2004-064709 JP 2017-004451 A JP 2017-068523 A

However, when a fire alarm system and an emergency telephone system having the functions of such a conventional maintenance telephone system are provided, when calls from maintenance and emergency telephones overlap, the operator of the receiver must Since the other party can only make a call, the other phone call is left unattended, and the call state continues. In addition, since the holding operation is not performed at the other handset, which is not talking, the person calling the handset cannot understand the situation, which is stressful for the caller.

Furthermore, since the receiver and the emergency telephone base unit are installed separately, the installation space increases, and the transmission from the transmitter of the fire alarm equipment and the transmission from the emergency telephone cordless handset are displayed as separate fire transmissions. Therefore, the person in charge of disaster prevention, etc. must deal with the receiver and the emergency telephone base unit individually, even though they are the same fire transmission. In order to make a call from an emergency telephone cordless handset, it is necessary to pick up the emergency telephone base unit and talk to the caller.

The present invention reduces the installation space, avoids individual displays when calling out a fire, and responds to fires and connects calls by incorporating the functions of emergency telephone equipment into the receiver of fire alarm equipment without impairing the functions of maintenance telephone equipment. To provide a fire alarm system and its receiver that improve the operability of a fire alarm system.

(Receiving machine)
The present invention provides a receiver capable of monitoring fires by connecting a predetermined terminal device,
a first telephone circuit unit for detecting an incoming call from a first telephone cordless handset connected to a first telephone line drawn from itself;
a second telephone circuit unit for detecting an incoming call from a second telephone cordless handset connected to a second telephone line drawn from itself;
A call through the first telephone line and a call through the second telephone line are respectively controlled, the first telephone circuit section detects an incoming call from the first telephone cordless handset, and the second telephone circuit section detects the second telephone call. a call control unit that performs predetermined call control when an incoming call from a child device is detected;
is provided.

(Call connection with selected handset)
As a predetermined call control, the call control unit connects the receiver to one of the first telephone handset and the second telephone handset selected by a predetermined operation, and the other handset that is not connected to the call outputs a holding tone. control to

(Call connection with telephone handset according to priority)
As a predetermined call control, the call control unit connects either one of the first telephone handset and the second telephone handset to the receiver according to a preset priority, and the other handset that is not connected to the call outputs a holding tone. control to

(three-way call)
The call control unit performs predetermined call control, and connects both the first telephone cordless handset and the second telephone cordless handset to the receiver by a predetermined operation.

(Two-party call between telephone cordless handsets)
As predetermined call control, the call control unit connects the first telephone cordless handset and the second telephone cordless handset by a predetermined operation.

(Fire alarm equipment)
The present invention is a fire alarm system, in which a terminal device including a fire sensor is connected to the receiver described above to monitor the fire,
A maintenance telephone is connected as a first telephone cordless handset to the first telephone line drawn from the first telephone circuit section of the receiver,
An emergency telephone different from a maintenance telephone is connected as a second telephone cordless handset to the second telephone line drawn from the second telephone circuit section of the receiver.

(basic effect)
The present invention is a receiver capable of monitoring fires by connecting a predetermined terminal device, and detects an incoming call from a first telephone cordless handset connected to a first telephone line drawn out from itself. a first telephone circuit unit, a second telephone circuit unit for detecting an incoming call from a second telephone cordless handset connected to a second telephone line pulled out from itself, a call via the first telephone line and the second telephone line; predetermined call control when the first telephone circuit section detects an incoming call from the first telephone handset and the second telephone circuit section detects an incoming call from the second telephone handset; Since a call control unit that performs becomes. Further, the same receiver can be used to make a common call with the first or second telephone cordless handset, and call operation can be performed simply and easily without changing the location. Also, even if the first telephone cordless handset and the second telephone cordless handset receive an incoming call at the same time, the call can be connected without any problem.

(Effect of call connection with selected handset)
In addition, as a predetermined call control, the call control unit connects the receiver to either one of the first telephone handset and the second telephone handset selected by a predetermined operation, and the other handset that is not connected to the call plays a holding tone. Therefore, even if the first telephone cordless handset and the second telephone cordless handset receive an incoming call at the same time, it is possible to make a call by selecting one of the callers as necessary, and the call that is not selected is possible. It is possible to make the person wait by hearing the holding tone.

(Effect of call connection with telephone cordless handset according to priority)
Further, as a predetermined call control, the call control unit connects either one of the first telephone cordless handset and the second telephone cordless handset to the receiver in accordance with a preset priority, and the other handset, which is not connected to the telephone call, generates a hold tone. For example, by setting a high priority to the call originating from the first telephone cordless handset, the caller of the first telephone cordless handset overlaps with the call originating from the second telephone cordless handset. However, the disaster prevention manager can talk with the receiver preferentially.

(Effect of three-way call)
In addition, the call control unit performs predetermined call control, and both the first telephone cordless handset and the second telephone cordless handset are connected to the receiver by a predetermined operation. The caller of the second handset and the fire prevention manager on the receiver side can carry out the necessary exchanges among the three parties without being hindered by duplicate calls, enabling the necessary fire response to be carried out quickly and appropriately. and

(Effect of two-way call between telephone cordless handsets)
As a predetermined call control, the call control unit connects the first telephone cordless handset and the second telephone cordless handset by a predetermined operation. To perform necessary exchanges between two parties without the receiver on the receiver side and to quickly and appropriately take necessary measures.

Explanatory drawing showing the outline of the R-type fire alarm system according to the present invention, in which the receiver is provided with the facility functions of an emergency telephone and a maintenance telephone. Explanatory diagram showing the appearance of the receiver from the front Explanatory diagram showing the normal monitoring screen Explanatory diagram showing the normal monitoring screen when there is an incoming maintenance call Explanatory diagram showing an emergency call incoming screen when an emergency call is received Explanatory diagram showing the fire alarm screen when an emergency call is received following FIG. Explanatory diagram showing an emergency call incoming screen when an emergency call and a maintenance call are received at the same time Explanatory diagram showing an emergency call incoming screen when the emergency call call button is operated in FIG. Explanatory diagram showing an emergency call incoming screen when the maintenance call button is operated in FIG. Explanatory diagram showing an emergency call incoming screen with a three-way call button

[Fire alarm system]
FIG. 1 is an explanatory diagram showing an outline of an R-type fire alarm system according to the present invention, in which a receiver is provided with facility functions of a maintenance telephone and an emergency telephone.

(Basic Concept of Embodiment)
The fire alarm system according to the present embodiment is a fire alarm system that monitors fire by an analog fire sensor 14 connected to a signal line 12-1 drawn from the receiver 10. The receiver 10 has a touch panel. A display 52, a reception control unit 70 that receives a fire alarm signal from the analog fire sensor 14 and performs predetermined fire alarm processing when a fire occurs, and a maintenance connection terminal 26 of a maintenance telephone line 24 drawn from the receiver 10. A maintenance telephone circuit unit 62 that detects an incoming call by connecting a maintenance telephone cordless handset 28 to the maintenance telephone cordless handset 28 and connects to the telephone master unit using a master unit speaker 66 and a master unit microphone 68, and an emergency telephone line drawn from the receiver 10 An emergency call circuit detects an emergency call incoming by hook-on of an emergency phone handset 34 connected to 32, connects the call to the telephone main unit on the receiver 10 side, and notifies the reception control unit 70 of the emergency call incoming. 64, the maintenance telephone circuit unit 62 and the emergency telephone circuit unit 64, respectively, and controls the telephone call when the incoming calls from both the maintenance telephone cordless handset 28 and the emergency telephone cordless handset 34 overlap. Since the control unit 72 is provided and there is no need to separately install a conventional emergency telephone main unit, the installation space for the fire alarm system and the emergency telephone system is reduced, and it is necessary for operating the emergency telephone system. By using the display 52 provided in the receiver 10, it is possible to display the fire transmission and fire source, etc., in the same manner as when a fire occurs in a fire alarm system. It is possible to quickly and appropriately respond to and operate a fire call by the emergency telephone cordless handset 34 or the transmitter, and furthermore, the call with the emergency telephone cordless handset 34 or the maintenance telephone cordless handset 28 can be made with the same base unit speaker 66 and the base unit. A hands-free telephone base unit using a microphone 68 can be used in common, and call operation can be performed simply and easily without changing the location.

In addition, the call control unit 72 is capable of making a three-way call with either one of the telephone base units or both when the incoming calls of the maintenance telephone cordless handset 28 and the emergency telephone cordless handset 34 overlap. To enable a call by freely selecting a caller as required even if incoming calls of a telephone cordless handset are duplicated. A specific description will be given below.

(Overview of fire alarm system)
As shown in FIG. 1, for example, an R-type receiver 10 is installed in a building where fire alarm equipment is installed, such as a janitor's room on the first floor. The signal lines 12-1 to 12-n are drawn out separately. In the following description, the signal lines 12-1 to 12-n may be referred to as the signal line 12 when there is no need to distinguish them.

The signal line 12-1 is connected to a plurality of analog fire detectors 14 having a transmission function with unique addresses, and detections derived from repeaters 16 having a transmission function with unique addresses. An on/off fire sensor 18 and a transmitter 20 are connected to the device line 17, and an addressable transmitter 15 having a transmission function with a unique address is further connected. Furthermore, a smoke prevention device 22 is connected to the signal line 12-n via a repeater 16 having a transmission function and having a unique address.

Here, the maximum number of addresses set in the terminal devices such as the analog fire detectors 14 and repeaters 16 connected to the signal lines 12-1 to 12-n is, for example, 255. terminal equipment including analog fire detectors 14 can be connected.

Also, a maintenance telephone line 24 is drawn out from the receiver 10 to the restricted area, and a maintenance telephone terminal 26 using a telephone jack is connected to the maintenance telephone line 24. The maintenance telephone terminal 26 is used by an inspection personnel during regular inspections. A maintenance telephone cordless handset 28 carried by, etc. is connected by a telephone plug 30, and a call is made with the receiver 10 side.

Although not shown, the maintenance telephone terminal 26 is actually incorporated in the addressable transmitter 15 and the transmitter 20 provided on the signal line 12-1 side. Connection can be made by opening 15a and 20a and inserting the telephone plug 30 of the maintenance telephone handset 28 into the telephone jack inside.

An emergency telephone line 32 is drawn out from the receiver 10 to the restricted area, and an emergency telephone handset 34 is connected to the emergency telephone line 32 . When the receiver is picked up, the emergency telephone handset 34 turns on the hook switch, thereby transmitting an emergency call origination signal including a unique caller address to the receiver 10 and receiving an emergency call indicating the caller to the receiver 10. display. Also, by picking up the emergency telephone cordless handset 34, it is possible to talk with the receiver 10 side. The emergency telephone cordless handset 34 may be divided into an emergency telephone cordless handset device having a communication function and a repeater having a function of communicating with the receiver such as transmitting a signal including a unique caller address to the receiver 10. good.

In addition to the fire alarm system, this embodiment is equipped with an emergency broadcast system. A broadcasting line 38 is drawn out for each system, and a speaker 40 for broadcasting is connected to the broadcasting line 38 .

(Functional configuration of receiver)
The receiver 10 is provided with a main CPU 42 and a plurality of sub CPU boards 44-1 to 44-n. 1 to 48-n are provided.

The main CPU 42 and the sub CPUs 46-1 to 46-n are connected by a serial transfer bus 50 and exchange data with each other. In the following description, sub CPUs 46-1 to 46-n and transmission units 48-1 to 48-n may be referred to as sub CPU 46 and transmission unit 48 when there is no need to distinguish between them.

A display 52 with a touch panel using a liquid crystal display panel or the like is connected to the main CPU 42, and information necessary for fire monitoring by the receiver 10 is displayed on the display 52 according to the situation of the receiver 10 at that time. . The information necessary for fire monitoring by the display 52 includes all information such as events that occurred during normal monitoring and during fire, information necessary for operation management, information necessary for coping operations, and further, operation management and operation of the receiver. It also contains the information necessary for In addition, the display 52 displays the maintenance call, information on the origination of the maintenance call, and operation information.

In addition to a display 52 functioning as display means for the main CPU 42, a display section 54 using an indicator lamp such as an LED is provided. The display unit 54 is provided with a fire representative light, a gas leakage representative light, and the like.

An operation unit 56 is connected to the main CPU 42, and the operation unit 56 is provided with various switches necessary for fire monitoring, such as a fire decision switch, main sound stop switch, district sound temporary stop switch, and the like. Further, the main CPU 42 is connected to a call transfer section 60, which outputs an emergency call call transfer signal including the caller to the emergency broadcast panel 36 when an emergency call is received by picking up the emergency telephone cordless handset 34. Then, select the floor where the fire occurred and the floor directly above as the broadcast area and make an emergency broadcast.

The main CPU 42 is also provided with a reception control section 70 and a call control section 72 which function by executing programs.

Furthermore, the receiver 10 has functions as emergency telephone equipment and maintenance telephone equipment.
A maintenance telephone circuit section 62, an emergency telephone circuit section 64, a master speaker 66, and a master microphone 68 are provided, the details of which will be clarified later. Here, the master speaker 66 also functions as an acoustic alarm unit that outputs an acoustic fire alarm when a fire occurs.

(Appearance of receiver)
FIG. 2 is an explanatory diagram showing the appearance of the receiver from the front. A display 52 with a touch panel using a liquid crystal display panel or the like is arranged on the board surface of the receiver 10 . The display 52 displays a color image on the screen, and a touch panel is arranged on the screen to enable selection and input by screen touch operation. In addition to the liquid crystal display panel, an appropriate image display panel such as an EL panel can be used as the display 52 .

A guide switch 74 is arranged on the lower side of the display 52 at the center of the board surface, which is easy for the user to see and operate. The guide switch 74 uses an illumination switch having an illumination function, and the illumination switch incorporates an indicator lamp such as an LED. When a fire event occurs and information to be a guidance target is displayed on the display 52, the illumination function of the guide switch 74 is enabled and blinks to prompt the user to operate the guide switch 74.

In addition, a fire determination switch 76, a main sound stop switch 78, and a district sound temporary stop switch 80 are arranged on the lower board surface of the display 52, enabling fire coping operations when a fire event occurs. A small door 90 is provided on the lower side of the guide switch 74 so that it can be opened forward with the lower side as an axis.

In addition, a master microphone 68 is arranged on the left side of the fire decision switch 76, and in combination with the master speaker 66 shown in FIG. It constitutes a telephone master unit by That is, the master speaker 66 provided in the receiver 10 functions as the receiver of the telephone master, the master microphone 68 functions as the transmitter of the telephone master, and hands-free communication of the maintenance telephone cordless handset 28 or the emergency telephone is possible. Communication with the handset 34 is enabled.

A fire representative light 84 and a gas leakage representative light 86 are provided on the upper board surface of the display 52 . Further, a printer 82 is arranged below the board surface of the receiver 10 to print out events occurring in the receiver 10 .

In this embodiment, the master speaker 66 and the microphone 68 constitute a telephone master unit for hands-free use. 92 may be provided.

(Receiver fire monitoring control)
As shown in FIG. 1, taking the sub CPU 46-1 of the sub CPU board 44-1 as an example, it instructs the transmission unit 48-1 to transmit and receive signals to and from the analog fire detector 14 according to a predetermined communication protocol. By doing so, fire monitoring control is performed. A downstream signal from the transmission unit 48-1 to the analog fire detector 14 is transmitted in voltage mode. This voltage-mode signal is transmitted as voltage pulses that vary the line voltage of signal line 12-1, for example, between 18 and 30 volts.

On the other hand, the upstream signal from the analog fire detector 14 to the transmission section 48-1 is transmitted in the current mode. In this current mode, a signal current is passed through the signal line 12-1 at the timing of bit 1 of the transmission data, and an upstream signal is transmitted to the receiver 10 as a so-called current pulse train.

During normal monitoring, the fire monitoring control by the sub CPU 46-1 instructs the transmission unit 48-1 to transmit a broadcast batch AD conversion signal including a batch AD conversion command at regular intervals. The analog fire sensor 14 that receives this batch AD-converted signal detects and holds the smoke concentration or temperature as sensor data. Subsequently, the sub CPU 46-1 transmits a call signal including polling commands sequentially designating terminal addresses.

When the analog fire sensor 14 receives a call signal having an address that matches its own address, it transmits a response signal including the sensor data held at that time to the transmission section 48-1. The analog fire detector 14 also sends a fire interrupt signal to the transmitter 48-1 of the receiver 10 when smoke density or temperature exceeds a predetermined fire caution level.

When the sub CPU 46-1 receives the fire interrupt signal via the transmission unit 48-1, it transmits a group search command signal to specify the group including the analog fire detector 14 that is detecting the fire, and then the group An internal search command signal is transmitted to identify the address of the analog fire sensor 14 that is detecting the fire, collect the analog data of the sensor intensively, and transmit it to the main CPU 42 via the serial transfer bus 50 .

The main CPU 42 compares the analog data received from the sub CPU 46-1 with a predetermined fire determination level, determines that there is a fire when the analog data reaches the fire determination level, and lights the fire representative lamp 84 of the display unit 54. Then, a predetermined main sound alarm indicating fire occurrence is output from the main unit speaker 66, fire alarm information including the location of the fire is displayed on the display 52 based on the sensor address where the fire was detected, and the alarm transfer unit 60 outputs a fire alarm signal including the location of the fire to the emergency broadcast panel 36 to make a predetermined emergency broadcast.

In addition, the sub CPU 46-n and the transmission unit 48-n provided on the sub CPU board 44-n interlock control of the smoke prevention and exhaust device 22 based on pre-stored interlock information when a fire is detected by the main CPU 42. does.

[Telephone equipment]
(Telephone circuit part of the receiver)
The receiver 10 is provided with a maintenance telephone circuit section 62, an emergency telephone circuit section 64, a master speaker 66 and a master microphone 68 corresponding to the call control section 72 provided in the main CPU 42 of the receiver 10 of FIG. be done. A telephone master set provided in the receiver 10 is composed of a master speaker 66 serving as a receiver and a master microphone 68 serving as a transmitter. In the following description, the telephone base unit means the base speaker 66 and the base microphone 68 , and may also be referred to as the base phone composed of the base speaker 66 and the base microphone 68 .

The maintenance telephone circuit unit 62 applies a predetermined DC voltage to the maintenance telephone line 24, and the telephone plug 30 of the portable maintenance telephone cordless handset 28 is inserted into one of the maintenance telephone terminals (telephone jacks) 26 for connection. Then, the line current flowing at this time is detected to detect the call, and a maintenance call call signal is output to the call control section 72 of the receiver 10 . The call control unit 72, which has received the maintenance call origination signal, displays a maintenance call origination screen on the display 52, outputs a maintenance call ringing tone, and operates the maintenance call button on the screen to connect the maintenance telephone cordless handset 28 and the telephone main unit. connect the call.

The emergency telephone circuit unit 64 applies a predetermined DC voltage to the emergency telephone line 32, and when any emergency telephone cordless handset 34 is picked up, the hook switch is turned on and an emergency call including a preset caller address is generated. A call signal is transmitted, and when this emergency call call signal is received, the emergency call call signal including the caller address is output to the call control section 72 of the receiver 10 . The call control unit 72, which has received the emergency call outgoing signal, instructs the reception control unit 70 to display an emergency call incoming screen indicating the emergency call outgoing and the incoming caller on the display 52, output an emergency call ringing tone, and output an emergency call. By operating the call button on the screen, the emergency telephone cordless handset 34 and the telephone main unit are connected for communication.

Further, the call control unit 72 instructs the call transfer unit 60 within a predetermined time after receiving the emergency call signal to output an emergency call transfer signal indicating the caller to the emergency broadcast panel 36, and a predetermined fire announcement is made. to the originating fire floor and the floor immediately above it.

[Call control]
The call control unit 72 performs control based on the screen operation by displaying on the display 52 the operation display necessary for controlling the call with the telephone main unit based on the transmission signals from the maintenance telephone circuit unit 62 and the emergency telephone circuit 64. Yes, and will be described in detail below.

(Screen in normal monitoring state)
FIG. 3 is an explanatory diagram showing a normal monitoring screen displayed on the display of the receiver. As shown in FIG. 3, a normal monitoring screen 94 is displayed on the display 52 when the receiver 10 is in the normal monitoring state. In the normal monitoring screen 94, menu buttons 98, 100, and 102 are arranged following a normal operation display 96, and menus of "learn procedure", "operate", and "view information" are displayed, and the menu button When any one of 98, 100 and 102 is touch-operated, information and operation scenes corresponding to each menu are displayed.

(Incoming maintenance call screen)
FIG. 4 is an explanatory diagram showing a normal monitoring screen when a maintenance call is received. When the telephone plug 30 of the maintenance telephone cordless handset 28 carried by the inspection personnel is inserted into one of the maintenance telephone terminals 26 shown in FIG. The maintenance telephone circuit unit 62 of the receiver 10 detects the line current flowing through the maintenance telephone line 24 through the connection of 28 and outputs a maintenance telephone call signal to the call control unit 72 provided in the main CPU 42 .

The call control unit 72, which has received the maintenance call origination signal from the maintenance call circuit unit 62, displays an incoming maintenance call display 104 in the empty area below the normal monitoring screen 94 displayed on the display 52, as shown in FIG. , call button 106 and hold button 108 are displayed. The incoming maintenance call display 104 shows, for example, guidance such as "You have received a maintenance call. You can talk to the caller by pressing the call button." In addition, the call control unit 72, which has received the maintenance call origination signal from the maintenance call circuit unit 62, outputs a predetermined maintenance call ringing tone (maintenance call ringing tone) from the main unit speaker 66 shown in FIG.

A disaster prevention manager or the like on the receiver 10 side who has learned of the incoming maintenance call touches the call button 106 displayed on the screen, and the call control unit 72 detects the operation of the call button 106, Call connection is performed to connect the maintenance telephone cordless handset 28 of the caller and the master unit speaker 66 and master unit microphone 68 constituting the telephone master unit on the receiver 10 side in a communicable state.

Specifically, the voice signal transmitted by the maintenance telephone cordless handset 28 is received by the maintenance telephone circuit unit 62, AD-converted by the main CPU 42, read into the call control unit 72 as a digital voice signal, and processed for noise suppression or the like. After being processed, DA conversion and audio amplification are performed and output from the master speaker 66 .

Further, an audio signal transmitted from the main unit microphone 68 is AD-converted by the main CPU 42, read as a digital audio signal by the call control unit 72, subjected to predetermined audio processing such as high frequency enhancement, and then DA-converted. is output to the maintenance telephone circuit unit 62 as an analog voice signal, amplified and transmitted to the maintenance telephone line 24, so that the receiver of the maintenance telephone cordless handset 28 outputs voice.

Further, when the call control unit 72 detects a touch operation of the hold button 108 displayed on the screen while the maintenance call is being connected, the call control unit 72 detects the touch operation of the maintenance call slave unit 28, the main unit speaker 66 and the main unit microphone that constitute the telephone main unit. 68 is disconnected, a predetermined holding tone signal is sent to the maintenance telephone cordless handset 28 to output the holding tone, and at the same time, the display of the holding button 108 is flashed or blinked to indicate that it is on hold. Note that the holding tone may be output from the parent device speaker 66 as necessary.

When the hold button 108 is touched again while on hold, the call control unit 72 detects this and cancels the hold, and the main speaker 66 and the main microphone 68 constituting the maintenance telephone cordless handset 28 and the telephone main unit. to resume the call connection.

To end the maintenance call, for example, when the call button 106 is touched again, the call control unit 72 detects this, and the main unit speaker 66 and the main unit microphone 68 that constitute the maintenance telephone cordless handset 28 and the telephone base unit are connected. disconnect and release the call connection. Also, when the maintenance telephone circuit unit 62 detects that the line current is interrupted by disconnecting the maintenance telephone cordless handset 28 from the maintenance telephone terminal 26 and outputs it to the call control unit 72, the call connection is disconnected and released.

A call end button may be provided on the outgoing maintenance call screen and the call connection may be disconnected and released by touch operation. Call start and call end may be operated.

(Screen when fire breaks out)
FIG. 5 is an explanatory diagram showing an emergency call incoming screen when an emergency call is received. In the fire alarm system in FIG. An emergency call signal including a caller address is transmitted to the receiver 10 . The emergency telephone circuit section 64 of the receiver 10 receives the emergency call origination signal from the emergency telephone cordless handset 34 and outputs it to the call control section 72 provided in the main CPU 42 .

The call control unit 72 that has received the emergency call origination signal from the emergency call cordless handset 34 displays on the display 52 an emergency call incoming screen 110 shown in FIG. The incoming emergency call screen 110 displays, as an incoming emergency call display 112, for example, "An emergency call has been received. Please check the situation at the bottom of the screen and take action." For example, the incoming call display 116 displays a guidance such as "An emergency call has been received. You can talk to the caller by pressing the call button." ” is displayed. A disaster prevention manager or the like on the receiver 10 side who has learned of the incoming call of such an emergency call touches the call button 118 displayed on the screen to check the scene, and the call control unit 72 pushes the call button 118. The operation is detected, and call connection is performed to connect the emergency telephone cordless handset 34 of the caller and the master unit speaker 66 and the master unit microphone 68 constituting the telephone master unit on the receiver 10 side in a state in which communication is possible.

Specifically, an audio signal transmitted by the emergency telephone cordless handset 34 is received by the emergency telephone circuit unit 64, AD-converted by the main CPU 42, read as a digital audio signal by the call control unit 72, and is processed for noise suppression or the like. After being processed, DA conversion and audio amplification are performed and output from the master speaker 66 .

Further, an audio signal transmitted from the main unit microphone 68 is AD-converted by the main CPU 42, read as a digital audio signal by the call control unit 72, subjected to predetermined audio processing such as high frequency enhancement, and then DA-converted. The signal is output as an analog voice signal to the emergency telephone circuit section 64 by the above, amplified and transmitted to the emergency telephone line 32, so that the receiver of the emergency telephone cordless handset 34 outputs voice.

When a fire is confirmed by calling the caller using such an emergency telephone, the disaster prevention manager or the like operates the fire determination switch 76 provided in the receiver 10 shown in FIG. Fire determination is detected, and predetermined fire determination processing such as simultaneous ringing of area sounds and interlocking control is performed.

In addition, when the call control unit 72 detects a touch operation of the hold button 120 displayed on the screen while the emergency call is being connected, the call control unit 72 detects the emergency call slave unit 34, the master unit speaker 66 and the master unit microphone that constitute the telephone master unit. 68 is disconnected, a predetermined holding tone signal is sent to the emergency telephone handset 34 to output the holding tone, and at the same time, the display of the holding button 120 is flashed or blinked to indicate that it is on hold. Note that the holding tone may be output from the parent device speaker 66 as necessary.

When the hold button 120 is touched again during the hold, the call control unit 72 detects this and cancels the hold, and the emergency telephone cordless handset 34 and the main speaker 66 and the main microphone 68 constituting the main phone are connected. to resume the call connection.

To end the emergency call, for example, when the call button 118 is touched again, the call control unit 72 detects this, and the emergency call cordless handset 34, the master speaker 66 and the master microphone 68 that constitute the telephone base unit are connected. disconnect and release the call connection. In addition, the hook switch is turned off by returning the emergency telephone cordless handset 34 to the hook, and the interruption of the line current is detected by the emergency telephone circuit unit 64 and output to the call control unit 72, thereby disconnecting and canceling the call connection.

(Interlocking of emergency calls and emergency broadcasts)
The call control unit 72 provided in the receiver 10 of FIG. 1, when receiving an emergency call origination signal by picking up the emergency telephone cordless handset 34, instructs the information transfer unit 60 within a predetermined time, for example, within 10 seconds. output to the emergency broadcast panel 36 an emergency call transmission signal including the calling area.

The emergency broadcast panel 36, which has received the emergency call transmission signal from the receiver 10, designates the fire occurrence floor and the immediately above floor as the transmission area as the broadcast area, and broadcasts the fire. This fire announcement is, for example, "Fire! Fire! In addition, the emergency broadcast board 36 makes the emergency broadcast to the whole building all at once after a predetermined time has elapsed since the start of the emergency broadcast.

(Emergency call incoming screen for multiple calls)
FIG. 6 is an explanatory diagram showing an emergency call incoming screen when an emergency call is received subsequent to FIG. In the fire alarm system of FIG. 1, after an emergency call is made by picking up the emergency telephone cordless handset 34, when an emergency call is made by picking up another emergency telephone cordless handset 34, the emergency call incoming display 116 is displayed. Below, as a new emergency call origination display 116-2, for example, guidance such as "An emergency call has arrived. You can talk to the caller by pressing the call button." 13”, and a call button 118-2 and a hold button 120-2 are also displayed.

A disaster prevention manager or the like on the side of the receiver 10 who has learned of the incoming call of such a new emergency call touches the call button 118-2 displayed on the screen to call another emergency telephone cordless handset 34 and the receiver 10. A master unit speaker 66 and a master unit microphone 68 constituting a telephone master unit on the other side can be connected for communication, and necessary communication can be made.

[Duplication of emergency calls and maintenance calls]
FIG. 7 is an explanatory diagram showing an emergency call incoming screen when an emergency call and a maintenance call are received at the same time, and FIG. 8 is an explanatory diagram showing an emergency call incoming screen when the emergency call button is operated in FIG. 9 is an explanatory diagram showing an emergency call incoming screen when the maintenance call button is operated in FIG. 7. FIG.

(Duplicate call screen display)
In the fire alarm system of FIG. 1, if a fire breaks out during regular maintenance and inspection, it is assumed that both the maintenance call and the emergency call will be received.

In this case, when the patrol inspector discovers the fire and picks up the emergency telephone handset 34, an emergency call origination signal is transmitted to the receiver 10, and the maintenance telephone carried by the inspector who discovered the fire. By inserting the telephone plug 30 of the handset 28 into the telephone jack of the nearby maintenance telephone terminal 26, a maintenance call outgoing signal is transmitted to the receiver 10, and the call control unit 72 of the receiver 10 operates the emergency call shown in FIG. The incoming call screen 110 is displayed on the display 52 .

The incoming emergency call screen 110 of FIG. 7 is obtained by adding the incoming maintenance call display 104, call button 106 and hold button 108, which are the same as those shown in FIG. 4, to the emergency call incoming screen 110 shown in FIG. A disaster prevention manager or the like on the receiver 10 side can select either the emergency telephone or the maintenance telephone to make a call as necessary.

For example, if the disaster prevention manager or the like touches the call button 118 of the emergency call, the call control unit 72 switches to the emergency call incoming screen 110 shown in FIG. The master unit speaker 66 and the master unit microphone 68 that constitute the . conduct. In addition, the call control unit 72 displays the non-selected maintenance call incoming display 104, call button 106, and hold button 108 dimly on the screen until the call connection of the emergency call is canceled, as indicated by dotted lines. Let

Also, if the disaster prevention manager or the like touches the call button 106 for the maintenance call, the call control unit 72 switches to the emergency call incoming screen 110 shown in FIG. By connecting the master unit speaker 66 and the master unit microphone 68 that constitute the . conduct. In addition, the call control unit 72 displays the non-selected emergency call incoming display 116, call button 118, and hold button 120 dimly on the screen until the call connection of the maintenance call is canceled, as indicated by dotted lines. Let

(Selection of duplicate calls by priority)
In addition, when the maintenance telephone cordless handset 28 and the emergency telephone cordless handset 34 receive the same call, the call control unit 72 selects one of the maintenance telephone cordless handset 28 and the emergency telephone cordless handset 34 according to a preset priority. Control may be performed so that the master unit is connected for a call and the holding tone is transmitted to the other unit.

For this reason, a high priority is set in the call control unit 72, for example, to the call originating from the emergency telephone cordless handset 34 by a predetermined setting operation. In this case, when an emergency call and a maintenance call are made at the same time, as shown in the emergency call incoming screen 110 in FIG. The hold button 120 is displayed on the screen, and at the same time, the incoming maintenance call display 104, the call button 106 and the hold button 108, which are set with low priority, are displayed by dotted lines until the emergency call connection is released. , to make it appear lighter on the screen. At the same time, for an emergency call with a high priority, the call control unit 72 automatically connects the caller's emergency telephone cordless handset 34, the master speaker 66 and the master microphone 68 that constitute the telephone base unit, and communicates with the caller. control to enable calls.

Of course, if necessary, a high priority may be set for maintenance calls and a low priority for emergency calls.

The advantages of giving priority to emergency calls are as follows. The emergency telephone has the same meaning as the fire report, and causes the emergency broadcast panel 36 to make an emergency broadcast. Therefore, by giving priority to the emergency phone, it becomes possible to give priority to the fire report from the emergency phone.

The advantages of prioritizing maintenance calls are as follows. Observers use maintenance telephones to report the situation to the receiver when they go to the site when a sensor alarm is issued. Therefore, by prioritizing maintenance calls, it is possible to give priority to calls from on-site surveillance personnel.

As mentioned above, there is an advantage of giving priority to maintenance calls when a sensor is triggered. may operate, or the receiver may be set.

(three-way call)
FIG. 10 is an explanatory diagram showing an emergency call incoming screen provided with a three-way call button. The call control unit 72 of the receiver 10 displays on the display 52 an emergency call incoming screen 110 provided with a three-way call button 130 shown in FIG. 10 when an emergency call and a maintenance call overlap.

This emergency call incoming screen 110 has a three-way call button 130 newly arranged in place of the holding buttons 108 and 120 of the emergency call incoming screen 110 shown in FIG.

When the emergency call reception screen 110 of FIG. 10 is displayed due to the emergency call and the maintenance call being received at the same time, the disaster prevention monitor or the like on the receiver 10 side touches the three-way call button 130 to control the call. The unit 72 detects and connects the emergency telephone cordless handset 34, the maintenance telephone cordless handset 28, and the cordless handset speaker 66 and the cordless microphone 68, which constitute the originator of the call, to each other to make a three-way call. to control.

In this three-way call connection, the audio signal from the master microphone 68 is the main unit audio signal, the audio signal from the emergency telephone cordless handset 34 is the emergency telephone audio signal, and the audio signal from the maintenance telephone cordless handset 28 is the maintenance telephone audio signal. Then it becomes as follows.

The main unit audio signal from the main unit microphone 68 is read into the main CPU 42 by AD conversion, then DA converted and divided into the maintenance telephone circuit unit 62 and the emergency telephone circuit unit 64, and the maintenance telephone line 24 and the emergency telephone line 32. sent to.

In addition, the emergency call voice signal from the emergency telephone cordless handset 34 is AD-converted and read into the main CPU 42, then DA-converted and output to the master speaker 66. It is synthesized with the voice signal, output to the maintenance telephone circuit section 62 by DA conversion, and transmitted to the maintenance telephone line 24 .

Further, the maintenance telephone voice signal from the maintenance telephone cordless handset 34 is AD-converted and read into the main CPU 42, then DA-converted and output to the parent speaker 66. It is synthesized with the voice signal, output to the emergency telephone circuit section 64 through DA conversion, and transmitted to the emergency telephone line 32 .

With the telephone main unit of the receiver 10 by such a three-way call connection, the voice of the caller of the emergency telephone cordless handset 34 and the maintenance telephone cordless handset 28 can be heard. The caller's voice of the telephone cordless handset 28 can be heard, and the maintenance telephone cordless handset 28 can hear the callers' voices of the telephone main unit and the emergency telephone cordless handset 34, and the three parties meet together. The same call contact is possible.

It should be noted that the three-way call connection between the emergency call and the maintenance call may be made by separating and synthesizing the audio signals by hardware such as switch switching instead of separating and synthesizing the audio signals by the main CPU 42 .

[Modification of the present invention]
(Emergency phone and maintenance phone selection)
In the above-described embodiment, when an incoming call to the maintenance telephone cordless handset and the emergency telephone cordless handset overlap, the object to be connected is set by operating the display, but the present invention is not limited to this.

It is also possible to prepare voice input units on the main unit side for maintenance calls and for emergency calls, respectively, and to select a target for call connection by operating either one. The maintenance telephone recognizes the operation by inserting the transmitter for the maintenance telephone into the jack, and the emergency telephone recognizes the operation by hooking up the transmitter for the emergency telephone.

Also, a physical switch for selecting which one of the maintenance telephone cordless handset and the emergency telephone cordless handset should be prioritized for communication may be arranged in the panel of the receiver.

It is also possible to simultaneously receive calls from the maintenance telephone cordless handset and the emergency telephone cordless handset and switch only to the transmission from the receiver.

(indication of incoming emergency and maintenance calls)
In the above-described embodiment, the incoming calls for the maintenance telephone cordless handset and the emergency telephone cordless handset are displayed on the display, but the present invention is not limited to this.

For example, an incoming emergency telephone handset may be displayed on a display, and an incoming maintenance call may be displayed by a maintenance telephone light provided in the panel. Since the emergency telephone cordless handset transmits an emergency call origination signal including a unique caller address and can recognize the installation location, it is preferable to show the caller on the display.

(Maintenance and emergency phone calls)
Instead of a three-way call including the receiver, a two-way call may be made using only the maintenance phone and the emergency phone.

(Temporary suspension of emergency broadcasts)
When an emergency call is received, the receiver outputs an emergency call transfer signal including the caller to the emergency broadcast panel 36, selects the floor where the fire occurred and the floor directly above as the broadcast area, and makes an emergency broadcast. An interlocking stop operation that does not output may be enabled. The interlocking stop operation for all incoming emergency calls may be performed by one operation, or the interlocking stop operation may be performed for each emergency call received. Alternatively, both may be enabled.

(Emergency broadcast from receiver)
A line for transmitting an audio signal may be connected between the receiver and the emergency broadcast panel, and an emergency broadcast may be made by transmitting the audio signal from the receiver to the emergency broadcast panel. This makes it possible to make an emergency broadcast from the emergency telephone cordless handset or the maintenance telephone cordless handset.

(telephone main unit)
As shown by the imaginary lines in FIG. 2, the screen display when the handset 92 is provided in the receiver 10 is the same as when the telephone base unit is composed of the base speaker 66 and the base microphone 68 to provide hands-free operation. By picking up the handset 92 in response to an outgoing call and touching the call button displayed on the screen, it is possible to talk with the caller.

(P-type receiver)
The above embodiment takes as an example a fire alarm system in which an R-type fire sensor is connected via a signal line from an R-type receiver. Similarly, for fire alarm equipment connected to addressable fire detectors equipped with transmission functions, it is necessary to install a conventional emergency telephone base unit separately by providing facility functions for maintenance telephones and emergency telephones. Since there is no fire alarm equipment and emergency telephone equipment, the installation space for fire alarm equipment and emergency telephone equipment is reduced. The transmitter of the alarm system can be used to transmit a fire and display the same information as the source of the fire, enabling disaster prevention personnel to quickly and appropriately respond to and operate the emergency telephone cordless handset or transmitter on the receiver. Furthermore, a call with an emergency telephone cordless handset or a maintenance telephone cordless handset can be made in common using the same telephone base unit, and the call operation can be performed simply and easily without changing the place.

(automatic broadcasting function)
In the above-described embodiment, the fire transmission of the emergency telephone is linked to the emergency broadcast by the emergency broadcasting equipment. It is also possible to provide the functions of emergency telephone equipment and maintenance telephone equipment.

(others)
Moreover, the present invention includes appropriate modifications that do not impair its purpose and advantages, and is not limited by the numerical values shown in the above embodiments.

10: Receiver 12-1 to 12-n: Signal line 14: Analog fire detector 15: Addressable transmitter 16: Repeater 17: Detector line 18: ON/OFF fire detector 20: Transmitter 22: Smoke prevention equipment 24: Maintenance telephone line 26: Maintenance telephone terminal 28: Maintenance telephone handset 30: Telephone plug 32: Emergency telephone line 34: Emergency telephone handset 36: Emergency broadcast panel 38: Broadcast line 40: Speaker 42: Main CPU
44-1 to 44-n: sub CPU boards 46-1 to 46-n: sub CPU
48-1 to 48-n: transmission section 52: display 54: display section 56: operation section 60: information transfer section 62: maintenance telephone circuit section 64: emergency telephone circuit section 66: master speaker 68: master microphone 70: Reception control unit 72: Call control unit 74: Guide switch 76: Fire determination switch 78: Main sound stop switch 80: Area sound temporary stop switch 82: Printer 84: Fire representative light 86: Gas leak representative light 88: Sound hole 92: Handset 94: Normal monitoring screen 96: Normal operation displays 98, 100, 102: Menu button 104: Maintenance call incoming displays 106, 118, 118-2: Call buttons 108, 120, 120-2: Hold button 110: Emergency Incoming call screen 112: Incoming emergency call display 116, 116-2: Incoming emergency call display 130: Three-way call button

Claims (6)

In a receiver that can monitor fires by connecting a predetermined terminal device,
a first telephone circuit unit for detecting an incoming call from a first telephone cordless handset connected to a first telephone line drawn from itself;
a second telephone circuit unit for detecting an incoming call from a second telephone cordless handset connected to a second telephone line drawn from itself;
each of a call through the first telephone line and a call through the second telephone line is controlled, and an incoming call from the first telephone cordless handset is detected by the first telephone circuit unit, and the second telephone circuit a call control unit that performs predetermined call control when the unit detects an incoming call from the second telephone handset;
A receiver characterized in that it is provided with
2. The receiver of claim 1, wherein
The call control unit, as the predetermined call control, connects either one of the first telephone handset and the second telephone handset selected by a predetermined operation to the receiver, and the other handset that is not connected to the call. A receiver characterized by controlling to output holding tone.
2. The receiver of claim 1, wherein
As the predetermined call control, the call control unit establishes a call connection between one of the first telephone handset and the second telephone handset and the receiver according to a preset priority, and the other handset that is not connected. A receiver characterized by controlling to output holding tone.
2. The receiver of claim 1, wherein
The receiver, wherein the call control unit performs the predetermined call control, and connects both the first telephone cordless handset and the second telephone cordless handset to the receiver by a predetermined operation.
2. The receiver of claim 1, wherein
The receiver, wherein the call control unit connects the first telephone cordless handset and the second telephone cordless handset by a predetermined operation as the predetermined call control.
A terminal device including a fire sensor is connected to the receiver according to any one of claims 1 to 5 to monitor fire,
a maintenance telephone is connected as the first telephone cordless handset to the first telephone line drawn from the first telephone circuit section of the receiver;
A fire alarm system, wherein an emergency telephone different from the maintenance telephone is connected as the second telephone cordless handset to the second telephone line drawn out from the second telephone circuit section of the receiver.

Images