JPH04351054A - Emergency telephone system - Google Patents

Abstract

PURPOSE:To reduce a signal line considerably and to improve the performance of work by providing a serial interface circuit to a controller side and each master set and sending/receiving a control signal in terms of a serial signal. CONSTITUTION:An emergency telephone master set 2 is provided with a serial interface circuit 22 through which a control signal required for talking with a controller 1 is sent/received. Then the processing required for talking is applied to the control signal sent from the controller 1 via the interface circuit 22. Moreover, the signal processing section 20 implements the processing sending the control signal in response to the operation such as a ten-key 26 to the controller 1. On the other hand, the controller 1 is provided with a serial interface circuit section 13 through which the control signal is sent/received in terms of the serial signal and a central signal processing section 10 implementing control processing centralizingly.

Description

[Detailed description of the invention]

0001

[Industrial Application Field] The present invention relates to an emergency telephone system, and more specifically, the present invention relates to an emergency telephone system, and more specifically, between a plurality of emergency telephone slave units installed in each monitoring area and an emergency telephone main unit installed in a plurality of monitoring locations. This invention is characterized in that emergency calls can be made between each other.

0002

[Prior Art] Recently, when the handset of an emergency phone handset installed in the hallway of a building is picked up, a call is automatically made to the emergency phone base installed at a disaster prevention center, etc. Emergency phone systems that allow telephone calls have been developed and come into use. As shown in FIG. 2, such an emergency telephone system connects an emergency telephone main unit 200 installed at a disaster prevention center etc. and emergency telephone slave units 300a to 300n installed in each monitoring area via a controller 100. The configuration is such that they are connected by a signal line, and one of the slave units 300a to 300n is connected to the base unit 2.
00 to make a call, or call one of the child devices from the base unit 200 to make a call.

For example, if we take up the handset H of the slave device 300a, the district board section 101 of the controller 100
A call control signal to which an address unique to the slave unit 300a is attached 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. Then, a ringing tone control signal is sent to the base unit 200 side through the parallel I/F circuit 103 and the signal line L103 to output a ringing tone. When the handset H provided in the telephone section 202 of the base unit 200 is picked up in response to the ringing tone, the ringing/busy tone circuit 202a is connected to the call signal line L102.
A slave unit 300a is connected through the district board 101a of the controller 100 to enable communication.

However, in the emergency telephone system having such a configuration, the signal processing unit 102 of the controller 100 is connected to the emergency telephone main unit 200 via the parallel I/F circuit 103.
Since necessary control signals are transmitted between the
03, and the number of signal lines L103 increases, making wiring construction troublesome. For this reason, when a plurality of emergency telephone main units 200 are installed, the number of signal lines to be installed becomes extremely large, which makes system construction difficult, and an improvement has been desired. .

[0005]

[Problems to be Solved by the Invention] The present invention has been proposed in view of the above circumstances, and it is possible to reduce the number of signal lines laid between the controller and the emergency telephone base unit, and to connect a plurality of emergency telephone base units. The aim is to provide an emergency telephone system with improved construction and usability.

[0006]

Means for Solving the Problems In the emergency telephone system of the present invention proposed to achieve the above object, the emergency telephone main unit is necessary for making a telephone call with the controller. A serial interface circuit that transmits and receives control signals using serial signals, and a serial interface circuit that receives control signals transmitted from the controller via the serial interface circuit and performs the control processing necessary for making calls, and also responds to operations such as the numeric keypad. and a signal processing unit that sends a control signal to the controller side,
The controller has a configuration including a serial interface circuit section for transmitting and receiving control signals using serial signals between each emergency telephone base unit, and a central signal processing section that centrally performs control processing for calls. has been done. Further, the present invention according to claim 2 provides that the controller:
It is configured to include a serial interface circuit section for connecting multiple emergency telephone base units.

[0007]

[Operation] In the present invention as set forth in claim 1, the control signal output from the central signal processing section of the controller is converted into a serial signal by the serial interface circuit section, and transmitted to the emergency telephone main unit side via the signal line. be done. Then, on the emergency telephone main unit side, the transmitted serial signal is received by the signal processing unit through the serial interface circuit, and
The signal processing section performs necessary control processing according to the received control signal. Conversely, when the emergency telephone main unit side performs the necessary control for a call, the control signal output from the signal processing section is converted into a serial signal by the serial interface circuit and transmitted to the controller side via the signal line. Then,
On the controller side, the transmitted serial signal is received by the central signal processing section through the serial interface circuit section, and the central signal processing section performs necessary control processing according to the received control signal. Therefore, by simply laying a pair of signal lines for transmitting serial signals between the controller and each emergency telephone base unit, it is possible to transmit the various control signals necessary for telephone calls. Signal lines can be significantly reduced. In the present invention according to claim 2,
Since multiple emergency phone base units can be connected to the serial interface circuit section of the controller, you can call the base unit from any slave unit and make an emergency call, or you can call and talk between base units. .

[0008]

Embodiments Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 shows an example of the configuration of an emergency telephone system according to the present invention. In the figure, 1 is a controller, 2 is an emergency telephone main unit, and 300a to 300n are emergency telephone slave units. In addition, emergency telephone handsets 300a to 300n, controller 1
District board section 101 and signal lines L100 to L10
2 is the same as in the case of the conventional system configuration, so the same reference numerals are given.

The controller 1 includes a central signal processing unit 10 that centrally performs signal processing of each unit, a system memory 11 that stores various processing programs, and temporarily stores data during the signal processing process. A serial I/F circuit section 13 includes a parallel I/F circuit for transmitting and receiving control signals using parallel signals between the district board section 101 and the signal processing section 10, and a plurality of serial I/F circuits 13a. ing. In addition, system memory 1
1 stores in advance the addresses of all slave devices and master devices connected to the controller 1. Furthermore, in this embodiment, the serial I/F circuit 13a transmits serial signals using RS232C.

On the other hand, the emergency telephone main unit 2 has a signal processing section 20.
and an I/O port 21 for transmitting signals between the internal circuit and each part (24 to 29), and a system memory 23 for storing various processing programs and the like and temporarily storing data in the signal processing process. Controller 1
and a serial I/F circuit 22 for transmitting and receiving control signals in the form of serial signals to and from the terminal.

Next, the general operation of the emergency telephone system of the present invention having such a configuration will be explained. 1. Operation when calling the emergency telephone base unit 2 from the emergency telephone slave unit 300a to make a call. ■Emergency telephone handset 300a
When you pick up the handset H, the hook switch FS
is switched, and the district board section 101 on the controller 1 side
The photocoupler PC of the district board 101a provided in the area is driven. Then, the input interface circuit FCDI
A call control signal to which an address unique to the slave unit 300a is attached is transmitted from the slave unit 300a to the central signal processing unit 10 via the parallel I/F circuit 12 via the signal line L100. ■When the central signal processing unit 10 receives a call control signal with a unique address from the district board unit 101 side, it passes through the serial I/F circuit unit 13 to each emergency telephone base unit 2 and 2 via the signal line L1.
・Sends 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 via the serial I/F circuit 22, and sounds an alarm via the I/O port 21. A drive signal is transmitted to the circuit 24 to output an alarm sound, and the address of the slave device is displayed on the 7-segment display (not shown) of the incoming call/call display section 25, and the fire light (not shown) is turned on by the indicator light drive circuit 28. (shown) lights up. ■In response to the output of the alarm sound, if you pick up the handset H of the telephone section 29 and operate the line connection switch (not shown) of the switching connection section 27 on either base unit 2 side, the selected line signal will be activated. The signal is transmitted from the signal processing unit 20 to the controller 1 side, and the central signal processing unit 10 outputs the output interface circuit FC of the district board 101a corresponding to the slave device 300a that made the call.
A control signal is transmitted to DO to drive relay RY, and slave device 3
00a to the corresponding call signal line L102. As a result, a call is made between the handset 300a and the base unit 2 from which the handset H has been taken up via the call signal line L102. In this way, when you pick up the handset from one of the emergency phone handsets, a ring tone is automatically output on each base unit, and an emergency call is immediately started with the base unit that answers when you pick up the handset. be able to.

2. Operation when calling the emergency phone slave unit from the emergency phone base unit to make a call. ■When you pick up the handset H of the telephone section 29 and enter the address (telephone number) of the slave unit you wish to call using the numeric keypad 26, a call control signal with a unique address is sent to the controller 1 side via the signal line L1. While being transmitted, calling/
A ringing tone signal is sent from the busy tone circuit 29a to the district board section 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 device, and sends the local board corresponding to the unique address via the parallel I/F circuit 12. 101a-101
n), the relay RY is switched and driven, and the ringing tone signal transmitted via the signal line L102 is sent to the child unit side, thereby ringing the ringing bell BZ. ■Call bell B
When the handset H is picked up by the slave unit that has been ringing, the base unit 2 that made the call is sent via the call signal line L102.
and the slave device are connected and a call is made.

3. Operation when an emergency phone base unit calls another emergency phone base unit and makes a call. ■When you pick up the handset H of the telephone section 29 and enter the address (telephone number) of the base unit 2 to be called using the numeric keypad 26, a call control signal with a unique address is sent to the controller 1 via the signal line L1. transmitted to. ■The controller 1 receives the transmitted call control signal with the unique address attached, determines that it is the unique address of the base unit, and sends the call control signal via the signal line L1 through the corresponding serial I/F circuit 13a. A call control signal is sent to the base unit 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 circuit 22 receives the transmitted call control signal.
A drive signal is transmitted to the alarm sounding circuit 24 through the O port 21 to output an alarm sound, and the incoming/calling display section 25
The address of the base unit is displayed on the 7-segment display (not shown), and the fire light (
(not shown) lights up. ■If you pick up the handset H of the telephone section 29 and operate the line connection switch (not shown) of the switching connection section 27 on the base unit 2 where the alarm sound has been output, the selected line signal will be transferred from the signal processing section 20 to the controller. 1 side, and in the central signal processing unit 10, the call/busy tone circuit 2 of the base unit 2 that made the call via the signal line L1
9a, thereby transmitting a control signal to signal line L10
2 to the base unit 2 that made the call, and a call is made. As described above, according to the emergency telephone system of the present invention, the control signals to be transmitted between the controller and the base unit are transmitted by serial signals, and therefore a large number of signal lines are required as in the case of transmitting parallel signals. There is no need to install Therefore, even if multiple base units are installed,
Wiring construction can be easily performed. In the above explanation, the configuration is described in which a call can be made between any child device and the base device. It is also possible to have a configuration in which the data table is stored and calls and conversations are made according to this data table, thereby dividing 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 set forth in claim 1, a serial interface circuit is provided on the controller side and each base unit side, and the control signal Since the signals are transmitted and received as serial signals, the number of signal lines can be significantly reduced compared to the case where parallel signals are transmitted, and workability can be improved. Further, according to the emergency telephone system of the present invention as set forth in claim 2, a plurality of emergency telephone base units can be connected to make calls and conversations between the slave unit and the base unit or between the base units, and the system Increased design flexibility.

[Brief explanation of the drawing]

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

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

[Explanation of symbols]

300a-300n Emergency phone slave unit 1
Controller 10 Central signal processing section 13 Serial interface circuit section 13a
Serial interface circuit 2 Emergency telephone main unit 20 Signal processing unit 22 Serial interface circuit 26
numeric keypad

Claims (2)

[Claims] Claim 1: Consisting of a plurality of emergency telephone slave units installed in each monitoring area and an emergency telephone base unit installed at the monitoring location, connected via a controller, at least the above-mentioned slave units and the base unit are connected to each other via a controller. The emergency telephone system is configured to make calls and emergency calls between the emergency telephone base unit and the controller, and the emergency telephone main unit has a serial interface that transmits and receives control signals necessary for making calls to and from the controller using serial signals. It receives control signals transmitted from the controller through the circuit and the serial interface circuit, performs control processing necessary for telephone calls, and sends control signals to the controller in response to operations on a numeric keypad or the like. The controller includes a serial interface circuit unit for transmitting and receiving control signals using serial signals between the emergency telephone base unit and a serial interface circuit unit that concentrates control processing necessary for making a call. An emergency telephone system characterized by comprising a central signal processing unit that performs the following operations. 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.