JPH0775375B2 - Emergency telephone system - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an emergency telephone system, and more particularly, between an emergency telephone slave set installed in each surveillance area and an emergency telephone master set installed in a plurality of surveillance locations. The present invention relates to the one characterized by making an emergency call with each other.

[0002]

2. Description of the Related Art Recently, when picking up a handset of an emergency telephone cordless handset installed in a passageway of a building or the like, an emergency telephone master set provided in a disaster prevention center or the like is automatically called. Emergency telephone systems capable of making calls have been developed and used. In such an emergency telephone system, as shown in FIG. 2, an emergency telephone master unit 200 installed in a disaster prevention center or the like and emergency telephone slave units 300a to 300n installed in each monitoring area are connected via a controller 100. It is configured to be connected by a signal line, and any one of the slave units 300a to 300n is connected to the master unit 2
00 is called to make a call, or one of the slave units is called from the base unit 200 to make a call.

For example, taking the handset H of the cordless handset 300a, the district board portion 101 of the controller 100.
From the slave unit 300a, the call control signal with a unique address is transmitted to the signal processing unit 102 side through the signal line L100 and the parallel interface circuit (hereinafter, referred to as parallel I / F circuit) 103. In 102, a ringing tone control signal is sent to the parent device 200 side through the parallel I / F circuit 103 through the signal line L103 to output the ringing tone. Then, according to the ringing tone, the base unit 200
Taking up the handset H provided in the telephone section 202 of the telephone, the call / busy tone circuit 202a is connected to the call signal line L10.
2, the cordless handset 300a is connected through the district board 101a of the controller 100 so that a telephone call can be performed.

However, in the emergency telephone system having such a configuration, the emergency telephone master unit 200 is transmitted from the signal processing unit 102 of the controller 100 via the parallel I / F circuit 103.
Since necessary control signal transmission is performed between the circuit unit 201 of the emergency telephone base unit 200 and the independent signal line L1.
No. 03 has to be laid, and the number of signal lines L103 increases, so wiring work is troublesome. For this reason, when a plurality of emergency telephone base stations 200 are installed, the construction of the system becomes difficult due to an extremely large number of installed signal lines, and therefore improvement has been desired. .

[0005]

SUMMARY OF THE INVENTION The present invention is proposed in view of the above circumstances, and it is possible to reduce the number of laying signal lines between the controller and the emergency telephone base unit and connect a plurality of emergency telephone base units. In this way, the purpose is to provide an emergency telephone system with improved workability and usability.

[0006]

The emergency telephone system according to the present invention, which is proposed to achieve the above object, has a plurality of emergency telephone sub-units installed in each surveillance area.
A controller for the emergency telephone base unit installed at the monitoring location
Connected via at least the above-mentioned slave unit and master unit
Emergency call line to make calls and emergency calls between
The emergency call base unit is a system
Serial control signals required to make a call with
Serial interface circuit for transmitting
From the controller via the interface circuit
Control required for communication by receiving transmitted control signals
Performs processing and controls according to the operation of the numeric keypad
Equipped with a signal processing unit that sends signals to the controller side
On the other hand, the controller is connected to the emergency telephone base unit.
To send and receive control signals by serial signals between
To make a call with the serial interface circuit of
Equipped with central signal processing unit that centralizes necessary control processing
Well, this central signal processing unit has input and output interfaces respectively.
Connected to each of the above slave units via an interface circuit
Of these, the above input interface is a hook
Connect to each handset of the above device via switch
The output interface is a ringing / busy tone circuit.
Connected to the switching contact of a relay that can be switched to the signal line of
It has been configured.

[0007]

According to the present invention, any telephone subunit, for example,
Taking the handset H of 300a, the district board 1
01a input interface FCDI photo coupler P
C is driven, and this state is passed through the parallel I / F circuit 12.
Then, it is detected by the central signal processing unit 10. Signal processing unit 1
0 detects the call from the telephone subunit 300a in this way
Then, the serial I / F circuit 13a passes through the signal line L1.
Then, it is received by the serial I / F circuit 22 of the parent device 2.
Then, the signal processing unit 20 is connected to the I / O port 21.
The ringing tone sounding circuit 24 is activated to output a ringing tone.
It In this way, the call from the child device 300a to the parent device 2 is performed.
Just lift the handset H of the cordless handset 300a.
It becomes possible, and the ringing tone sounds in the base unit 2. Also this
Thus, when the child device 300a makes a call,
The central signal processing unit 10 of the laser 1 has a parallel I / F circuit 12
The output interface of the district board 101a called up via
The relay RY of the ace FCDO is activated, and its switching contact a
Close. Then, the signal line L102 causes the ringing / busy sound
From the ring / busy circuit 29a connected to line 29a,
Ringing confirmation sound (when the main unit 2 is in a call)
Since it is output, the handset H is used in the child device 300a.
I can confirm the call. From the child device 300a as described above
Base unit 2 responds to the call of
When operating and picking up the handset H,
Calls can be made between them. Next, the base unit 2 to the slave unit 300
To call a, take the handset H of the telephone unit 29.
And enter the address of the slave unit with the numeric keypad 26.
Then, the signal processing unit 20 detects this, and the serial I / F
Through the circuit 22, the serial turf of the controller 1
A call designation signal is sent to the base circuit 13a, and this signal is
It is detected by the central signal processing unit 10. Central signal processing unit 10
Decodes the ringing designation signal, the
The output interface FC is determined by discriminating the sub-board 101a.
Activate the DO relay RY, close the switching contact a,
The bell BZ is rung and the child device 330a is called. to this
On the other hand, the child device 300a picks up the handset H.
For example, a call with the called base unit 2 becomes possible.

[0008]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 shows an example of the configuration of an emergency telephone system of the present invention. In the figure, 1 is a controller, 2 is an emergency telephone master unit, and 300a to 300n are emergency telephone slave units.
The emergency telephone slave units 300a to 300n and the controller 1
District board portion 101 and signal lines L100 to L10
Since 2 is the same as in the case of the conventional system configuration, the same reference numeral is assigned.

The controller 1 centrally processes the signal processing of each unit, a central signal processing unit 10, a system memory 11 for storing various processing programs and the like, and temporarily storing data in the signal processing process, and the like. A parallel I / F circuit for transmitting and receiving a control signal by a parallel signal between the district board unit 101 and the signal processing unit 10 and a serial I / F circuit unit 13 having a plurality of serial I / F circuits 13a are provided. ing. System memory 1
Addresses of all the slaves and the master unit connected to the controller 1 are stored in advance in 1. Further, in this embodiment, the serial signal is transmitted by the RS232C by the serial I / F circuit 13a.

On the other hand, the emergency telephone base unit 2 has a signal processing unit 20.
An I / O port 21 for signal transmission between the internal circuit and each part of the internal circuit (24 to 29), a system memory 23 for storing various processing programs and the like and temporarily storing data in a signal processing process, and the like. Controller 1
And a serial I / F circuit 22 for transmitting and receiving a control signal by a serial signal to and from. District board 101
Each has an input interface FCDI and an output interface.
Equipped with face FCDO, FCDI is a photo coupler
It is connected to a PC and has a switching contact a, b on the FCDO.
Ray RY is connected. Here, the photo coupler PC is
Pick up the handset of the telephone handset 300a-300n
The relay RY detects the switching contact a,
b can be switched, and the switch contact a side
In other words, the signal processing unit 20 of the telephone base unit 2 is
Determine if Machine 2 is busy and if not,
The ringing / busy sound circuit 29a outputs a ringing confirmation sound,
If it is medium, the busy tone is output. did
Therefore, any one of the telephone sub-units 300a to 300n
When the dosset H is picked up, the hook switch FS is closed.
Then, the telephone base unit 2 is automatically called. At this time,
Telephone picking up the handset H from the busy tone circuit 29a
For the slave unit, the call confirmation is made according to the state of the telephone master unit 2.
Acknowledgment or busy tone will be output. On the other hand, this
In the base unit 2 that receives a call from the handset in such a way,
When you operate the line connection switch, FCDO relay RY
To close the switching contact b, the telephone master unit 2 and the telephone subunit.
300a to 300n are connected via an amplifier circuit to make a call
Is possible.

Next, the general operation of the emergency telephone system of the present invention having such a configuration will be described. 1. Operation when calling the emergency telephone master unit 2 from the emergency telephone subunit 300a to make a call. Emergency telephone 300a
Picking up the handset H, the hook switch FS
Is switched, and the district board unit 101 on the controller 1 side
The photocoupler PC of the district substrate 101a provided in the drive unit is driven. Then, the input interface circuit FCDI
From the signal transmission line L100 to the central signal processing unit 10 through the parallel I / F circuit 12, a call control signal having an address unique to the child device 300a is transmitted. When the central signal processing unit 10 receives a call control signal with a unique address from the district board unit 101 side, each emergency telephone base unit 2 via the serial I / F circuit unit 13 and the signal line L1.
-Send a call control signal to the side. In each emergency telephone base unit 2, the signal processing unit 20 receives the call control signal transmitted from the controller 1 side through the serial I / F circuit 22, and the audible alarm ringing circuit through the I / O port 21. A drive signal is transmitted to 24 to output an alarm sound, a 7-segment display (not shown) of the incoming / calling display unit 25 displays the address of the slave unit, and a fire lamp (not shown) is displayed by the indicator light drive circuit 28. ) Is lit up. When the handset H of the telephone unit 29 is picked up and the line connection switch (not shown) of the changeover connection unit 27 is operated on either of the base units 2 according to the ringing output of the alarm sound, the selected line signal is signaled. The signal is transmitted from the processing unit 20 to the controller 1 side, and in the central signal processing unit 10, the output interface circuit FC of the district board 101a corresponding to the calling slave device 300a.
Control signal is transmitted to DO to drive relay RY, and slave unit 3
00a is connected to the corresponding call signal line L102. As a result, a call is made between the child device 300a and the master device 2 in which the handset H is picked up via the call signal line L102. In this way, when the handset is picked up by one of the emergency telephone subunits, a ringing tone is automatically output at each master unit side, and an emergency call is immediately started with the master unit that picks up the handset and responds. be able to.

2. Operation when calling an emergency telephone cordless handset from the emergency telephone base unit to make a call. When the handset H of the telephone unit 29 is picked up and the address (telephone number) of the cordless handset to be called is input by the ten-key pad 26, the call control signal with the unique address is given on the signal line L1.
While being transmitted to the controller 1 side via the ringing tone signal, a ringing tone signal is sent from the ringing / busy tone circuit 29a to the district board portion 101 on the controller 1 side via the signal line L102. The controller 1 receives the transmitted call control signal with the unique address, determines that it is the unique address of the slave unit, and through the parallel I / F circuit 12, the district board (101a) corresponding to the unique address. -10
1n), the relay RY is switched and driven, and the ringing tone signal transmitted via the signal line L102 is sent to the slave unit to ring the ringing bell BZ. When the handset H is picked up by the handset H that rings the calling bell BZ, the calling base unit 2 and the handset are connected via the call signal line L102 and a call is made.

3. Operation when calling from another emergency call base unit to call another emergency call base unit. When the handset H of the telephone unit 29 is picked up and the address (telephone number) of the master unit 2 to be called by the ten-key pad 26 is input, a call control signal with a unique address is sent to the controller 1 side via the signal line L1. Is transmitted. The controller 1 receives the transmitted call control signal with the unique address, determines that it is the unique address of the master device, and sends the call through the signal line L1 through the corresponding serial I / F circuit 13a. A call control signal is sent to the machine 2 side.
In the base unit 2, the signal processing unit 20 receives the transmitted call control signal via the serial I / F circuit 22, and the I / F
A drive signal is transmitted to the alarm sounding circuit 24 through the O port 21 to sound and output the alarm sound, and the incoming / calling display unit 25
The address of the master unit is displayed on the 7-segment display (not shown), and the fire lamp (not shown) is lit by the indicator light drive circuit 28. When the handset H of the telephone unit 29 is picked up and the line connection switch (not shown) of the switching connection unit 27 is operated by the base unit 2 that outputs the alarm sound, the selected line signal is transmitted from the signal processing unit 20 to the controller 1 The central signal processing unit 10 transmits the control signal to the ringing / busy tone circuit 29a of the base unit 2 that has called the call through the signal line L1.
A call is made by connecting to the base unit 2 that has called via 02. As described above, according to the emergency telephone system of the present invention, since the control signal to be transmitted is transmitted between the controller and the master unit by the serial signal, a large number of signal lines as in the case of transmitting the parallel signal are transmitted. Eliminates the need to lay. For this reason, wiring installation can be easily performed even when a plurality of parent devices are installed. In the above description, the configuration is such that a call can be made between any of the slave units and the master unit. However, for example, the slave units that can be called from the master unit are stored in the system memory of the controller as a data table. Remember it so that you can call and make calls according to this data table.
It is also possible to divide the monitoring area for each base unit.

[0014]

As can be understood from the above description, according to the emergency telephone system of the present invention as defined in claim 1, the controller side and each master side are provided with the serial interface circuits, and the control signal is provided. Is transmitted serially,
The signal lines can be significantly reduced as compared with the case of performing the parallel transmission , and the workability can be improved. Also,
When calling from the handset to the base unit, pick up the handset.
Can be performed by simply calling
You can check it and output the busy tone when the base unit is busy.
It is convenient.

[Brief description of drawings]

FIG. 1 is a diagram showing a configuration example of an emergency telephone system according to the present invention.

FIG. 2 is a diagram showing a configuration example of a conventional emergency telephone system.

[Explanation of symbols]

 300a to 300n Emergency telephone slave unit 1 Controller 10 Central signal processing unit 13 Serial interface circuit unit 13a Serial interface circuit 2 Emergency telephone master unit 20 Signal processing unit 22 Serial interface circuit 26 Numeric keypad

Claims (2)

[Claims] 1. A plurality of emergency telephone slave units installed in each surveillance area and an emergency telephone master unit installed in a surveillance place are connected via a controller, and at least the slave units and the master unit are connected. An emergency telephone system configured to make a call and an emergency telephone between the controller and the emergency telephone master unit, and a serial interface circuit for serially transmitting a control signal necessary for making a call with the controller. , Signal processing for receiving a control signal transmitted from the controller via the serial interface circuit and performing control processing necessary for a call, and transmitting a control signal according to an operation of a numeric keypad to the controller side On the other hand, the controller is a serial device for transmitting and receiving control signals by serial signals to and from the emergency telephone base unit. An interface circuit, and a central signal processing unit which performs concentrated control processing necessary for making a call, the central signal processing unit, the input to each output interferon
Connected to each of the above slave units via a base circuit.
Ri, of which the input interface is Fukkusui'
Connected to each handset of the above-mentioned slave device via
The above output interface is a telephone line, ringing / busy tone
Connect to the switching contact of a relay that can be switched and connected to the circuit signal line.
Emergency telephone system with the following configuration. 2. The emergency telephone system according to claim 1, wherein the serial interface circuit section of the controller is configured to connect a plurality of emergency telephone base units.