JPS63260352A - Telephone system for fire alarm equipment - Google Patents

Abstract

PURPOSE:To attain quick and smooth accident preventing communication by calling a mobile receiver from a transducer or a main receiver in addition to the call of the main receiver by a transducer or a mobile receiver so as to apply communication. CONSTITUTION:In hooking up a handset 4 of a main receiver 1, a hook switch 7 is switched, a voltage at a point (c) drops to invert the output of a comparator 16 to an L level, a transistor TR Q1 is turned on to apply power to a calling line l11, and buzzer 22 of mobile receivers 3a, 3b is energized to generate a call tone. In hooking up a handset 6 of the mobile receiver 3a in this state, the hook switch 9 is thrown to the position of the handset 6 and a voltage at a point (b) of the main receiver 1 reaches a reference voltage Vr1 or below and the output of the comparator 14 goes to an L level and the output of comparators 14, 16 goes to an L level, then the output of the comparator 24 is inverted to an L level, the TR Q3 is turned on to interrupt the TR Q1 to stop the call tone in other mobile receiver 3b.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a telephone device for fire alarm equipment that allows communication between a transmitter, a main receiver, and a mobile receiver.

(Prior Art) As a conventional telephone device for fire alarm equipment, for example, the one shown in FIG. 4 is known. In FIG. 4, 1 is a main receiver, 2 is a transmitter installed in a warning area, Reference numeral 3 designates a mobile receiver equipped with a fire alarm function almost equivalent to that of the main receiver 1;
When each of the handsets 4, 5, and 6 is hooked up, the hook switches 7, 8, 9 are closed, and a call is established.

For example, if you hook up the handset 5 of the call @2,
The hook switch 8 is closed and connected to the telephone line, and the transistor Qa of the main receiver 1 is connected to the handset 5 of the transmitter 2.
The signal current generated by the connection is detected and turned on, and the call indicator lamp 10 is turned on.At the same time, the transistor Qb is turned on, causing the buzzer 11 to ring and generate a ringing tone. When the person in charge hooks up the handset 4 when the ring tone is generated in the main reception ta1, the hook switch 7 switches to the side of the handset 4, and the connection to the telephone line becomes ready for talking.
At the same time, the transistor Qb is turned off and the buzzer 11 stops producing the sound.

Such call control is the same when the handset 6 of the transfer receiver 3 is hooked up.

(Problems to be Solved by the Invention) However, in the telephone device of such conventional fire alarm equipment, the transmitter 2 is connected to the mobile receiver 3, and the main receiver 1 is connected to the mobile receiver 3. Because calls cannot be made, disaster prevention managers and others cannot receive calls unless they are at the location where the main receiver is installed.

In particular, the location where the mobile receiver 3 is installed is usually a place where the manager of the floor is located, and even if you want to call the mobile receiver to make a disaster prevention contact with the administrator, you will not be able to contact the manager from the transmitter. There was a problem that it could not be called even from the main receiver.

(Means for Solving the Problems) The present invention has been made in view of such conventional problems. Another object of the present invention is to provide a telephone device for fire alarm equipment, which allows a main receiver to call a transfer receiver and make a call.

In order to achieve this object, the present invention includes a first call detection means for detecting connection of a handset of any one of a transmitter, a transfer receiver, and a main receiver; paging means for generating a ring tone based on the output of the call detecting means; and a second call for detecting that a handset is connected to any two or more of the transmitter, transfer receiver, or main receiver. The detecting means and the call stopping means for stopping the ringing sound by the calling means in response to the output from the second call detecting means are configured to be able to function at 8 times.

(Function) In the telephone device of the fire alarm equipment of the present invention having such a configuration, in addition to calling the main receiver by the transmitter or the transfer receiver, the telephone device also receives transfer calls from the transmitter or the main receiver. It is possible to call the receiver and make phone calls, and it is possible to make phone calls between the transmitter, main receiver, and transfer receiver, allowing for quick and smooth disaster prevention communication in emergencies. .

゛　(Example) FIG. 1 is a circuit diagram showing one embodiment of the present invention.

First, to explain the configuration, 1 is a main receiver, and a plurality of transmitters 112a, 2b, . When making a call, the handset 5 can be connected to a jack terminal provided on the transmitter 2a to make a call.

In addition, the telephone line 110°1 drawn out from the main receiver 1
Between 1 and 112, transfer reception 1fi3a, 3b, ・
.
,10 and C! , 12.

The main receiver 1 is provided with a handset 4, and by hooking up the handset 4, a hook switch 7 is switched to the side of the handset 4.

This main receiver 1 includes either a handset 4 in the main receiver, a handset 5 in the transmitters 2a and 2b, or the back of the handset 6 in the mobile receivers 113a and 3b.
Comparators 12, 14, and 16 are provided as first call detection means for detecting that a call has been connected.

That is, the comparator 12 detects that the communication device 5 is connected to one of the transmitters 2a and 2b.
Resistors R1 and R2 are connected to the (-) input terminal of comparator 12.
The reference voltage Vrl divided by (+) is input.
A telephone line 11 for the transmitters 2a and 2b is connected to the input terminal via a resistor R3. Therefore, if the telephone device 5 is connected to the transmitter 2a as shown in the figure, the telephone line pressure 1, the transmitter 2a, the handset 5
A communication current flows in the path that becomes the communication line 12. Therefore, the voltage at point a with respect to the (+) input of the comparator 12 becomes lower than the reference voltage Vrl on the (-) input side, and the output of the comparator 12 becomes higher than the previous H. Inverted from level output to L level output.

The output of the comparator 12 is a diode D1, a resistor R9,
It is connected to the base of the transistor Q1 via the call indicator light 10, and the output of the comparator 12 is connected to the transmitter 2a.
When the handset 5 is connected to the terminal, a current flows to the call indicator 10 through the resistor RIO, and at the same time it lights up, a base current also flows to the transistor Q1, turning it on, and by turning on the transistor Q1, the resistor R11
, R12 turns on the transistor Q2, which causes the buzzer 11 to sound and generate a ringing tone.

The comparator 14 detects the connection of any one of the handsets 6 in the mobile receivers 3a and 3b. For example, when the handset 6 of the mobile receiver B 3a is hooked up, the hook switch 9 switches the handset 6 to the mobile receiver 3a, 3b. to connect the handset 6 between the telephone lines 110 and 112, and for this purpose, the resistor R7 of the main receiver 1, the telephone line fL10, the handset 6 of the transfer receiver 3a, the hook switch 9 and the telephone line 11 are connected.
The communication current flows through the path 2. Due to this communication current, the voltage at point b becomes lower than the reference voltage Vr1 which is the (-) input of the comparator 14, and the output of the comparator 14 is inverted to L level. The output of the comparator 14 is connected to one end of the resistor R9 via the diode D2, and as in the case where the output of the comparator 12 is inverted to L level, the call indicator light 10 is turned on and the buzzer 11 is turned on by turning on the transistors Ql and Q2. A ring tone will be generated by the ringing of the phone.

The comparator 16 detects the line connection by the footer up of the handset 4 provided in the main receiver 1. When the handset 4 is hooked up, the hook switch 7 closes to the side of the handset 4, and the resistor R8 and the handset 4 As the communication current flows through the path that becomes the hook switch 7, the voltage at the 0 point becomes the reference voltage V for the (-) input terminal of the comparator 16.
rl or less, and the output of the comparator 16 is inverted to L level. The output of the comparator 16 is connected to one end of the resistor R9 via the diode D3, and similarly to the case where the output of the comparator 12 or 14 is inverted to L level, it lights up the call indicator 10 and turns on the transistor Q1.
Turn on. In this case, since the hook switch 7 is not switched to the handset 4 side, the transistor Q2 is not turned on and the buzzer 11 does not sound.

Furthermore, the main receiver 1 includes a main receiver 1 and a transmitter 112a.

A comparator 24 is provided as a second call detection means for detecting the connection of two or more handsets among the handsets 2b or transfer receivers 3a and 3b, and the comparator 24 detects the connection of two or more handsets. A transistor Q3 is provided as a ringing stop means for stopping the ringing sound from the buzzer 11 when the ringer 11 is activated.

That is, for the (+) input terminal of the comparator 24, each of the outputs of the comparators 12, 14. A point d, which is one end of the resistor R16, is connected to the power supply line via a resistor R19, and a diode D7 is connected in parallel to the resistor R19.

A reference voltage vr2, which is a voltage divided by resistors R17 and RlB, is set at the (-) input terminal of the comparator 24.

Therefore, when the comparator 24 detects a call connection of one handset in which the output of either one of the comparators 12, 14 or 16 is inverted to L level, for example, when the output of the comparator 12 becomes L level, the resistor R19 The voltage at point d, which is the divided voltage of R13 and R13, is larger than the reference voltage Vr2 for the (-) input.
The output of No. 4 is at H level. On the other hand, when the outputs of two or three of the comparators 12゜14.16 go to L level, the voltage at point d becomes less than the reference voltage Vr2,
At this time, the output of the comparator 24 is inverted to L level. When the output of the comparator 24 is inverted to L level, a current flows through the resistors R21 and R22, and at the same time, a base current flows to the transistor Q3, turning it on.
When transistor Q3 is turned on, the transistor Q1 is cut off, and when the transistor Q2 is turned off, the buzzer 11 stops sounding.

Further, a delay feedback circuit including a capacitor C3 and a resistor R20 connected in series is provided between a point d on the input side of the comparator 24 and the output. This delay feedback circuit immediately changes the output of the comparator 24 to a high level when the connection is switched to one handset while the output of the comparator 24 is inverted to L level due to the connection of two or more handsets. capacitor C via resistor R19 without returning to level.
3, and the voltage to the (+) input terminal due to charging of the capacitor C3 becomes (=) the reference voltage to the input terminal Vr
When it exceeds 2, it returns to H level. The delay function of the comparator 24 is such that if there is no delay circuit and one of the other handsets is connected when the call ends, the buzzer 11 will sound as soon as the handset is returned, and the call will be ended. There is a risk that the call may be mistaken for an erroneous telephone call. However, by providing a delay circuit, the call is made by the buzzer after a predetermined delay time after the end of the call, so there is no possibility that the call will be mistaken for an erroneous call.

On the other hand, in order to make a call in the transfer receivers 13a and 3b, a series circuit of a resistor R30, a light emitting diode 18, and a hook switch 9 is provided between the call lines 111 and 112 drawn out from the main receiver 1. When the transistor Q1 is turned on by the L-level output of the comparator 12 or 16 at 1, power is supplied to the communication line 111, and the light emitting diode 18 can be driven to emit light. Light generated by driving the light emitting diode 18 to emit light is incident on the phototransistor 20, and when the phototransistor 20 is turned on, the buzzer 22 is sounded to generate a ringing tone. The handset 6 is in the discharge state due to the sound of the buzzer 22.
When hooked up, the hook switch 9 switches the handset 6
10. Switch handset 6 to call line tlAil, 10.
The light emitting diode 18 is turned off and the buzzer 22 is stopped by switching the hook switch 9.

In addition, the handset 4 provided in the main receiver is equipped with a capacitor C2.
A telephone line 110 to the transfer receivers 3a, 3b via
is connected to the transmitter 1 through the capacitor C2゜C1.
It is connected to the telephone line 1 for M2a and 2b,
The capacitors C1 and C2 cut the DC component and allow only the AC component, which becomes a call signal, to pass through, thereby making it possible to make a call.

Next, the operation of the embodiment shown in FIG. 1 will be explained.

First, the main receiver 1 or transfer receiver 3a from the transmitter @2a
, 3b will be explained.

When the handset 5 is connected to the transmitter 2a as shown in the figure, a communication current flows through the communication lines 1) and 1.12, and the voltage at point a in the main receiver 1 is relative to the (-) input terminal of the comparator 12. The voltage drops below the reference voltage Vr1, the output of the comparator 12 is inverted to L level, and the call indicator light 10 is activated.
At the same time as lighting up, transistor Q1 is turned on. When the transistor Q1 is turned on, the transistor Q2 is turned on, causing the buzzer 11 to sound, and the main receiver 1 to generate a ringing tone. At the same time, by turning on transistor Q1, the transfer receiver 3
Power is supplied to the communication lines 111 for the communication receivers 3a and 3b, and the light emitting diodes 18 of the transfer receivers 3a and 3b are driven to emit light, and the phototransistor 20 is turned on to turn on the buzzer 2.
2 rings, and a ring tone is also generated in the mobile receivers 3a and 3b.

If the main receiver 1 and the handset 4 of the main receiver 1 are hooked up in such a calling state with the main receiver and the transfer receivers 3a and 3b, the hook switch 7 will be switched to the handset 4 side, and the buzzer 11 will be turned on. The reading tone stops, and the handset 4 is connected to the telephone line 11 via the capacitors C2 and C1, and to the telephone line 12 via the hook switch 7, so that there is no connection between the transmitter 2a and the telephone receiver 5. You will be able to make phone calls.

Also, when the footer of the handset 4 is raised, the voltage at point C on the (+) input side of the comparator 16 changes to the reference voltage Vr of the (-) input.
l or less, the output of the comparator 16 is inverted to the L level, and the outputs of the comparators 12 and 16 are at the L level, so the voltage at point d on the input side of the comparator 24 is less than or equal to the reference voltage Vr2 for the (-) input. Therefore, the output of the comparator 24 is inverted to L level, turning on the transistor Q3 and cutting off the transistor Q1. The cut-off of the transistor Q1 cuts off the power supply to the communication line 111 of the mobile receivers 3a and 3b, and when a communication connection is established between the transmitter 2a and the main receiver 1, the mobile receiver The generation of ring tones in 3a and 3b is stopped.

On the other hand, the main receiver 1 and the transfer reception ll3 by the transmitter 2a
For example, if the handset 6 of the transfer receiver 3a is hooked up in the state where the call tone of calls a and 3b is being generated,
When the footer of the handset 6 was raised, the hook switch 9 did not switch and the call line changed to $1,10. fL12, and at the same time the light emitting diode 18 is turned off and the buzzer 22 stops sounding. The connection of the handset 6 by the transfer receiver 3a is detected when the voltage at point b on the (+) input side of the comparator 14 in the main receiver 1 becomes below the reference voltage Vr1 of the (-) input terminal, and the comparator The output of 14 becomes L level. At this time, the outputs of comparators 12 and 14 are L.
Since the output of the comparator 24 is at the L level, the output of the comparator 24 is inverted to the L level, turning on the transistor Q3, and the cutoff of the transistor Q1 turns off the transistor Q2, stopping the ringing tone in the main receiver 1, and also The power supply is cut off and the ringing tone of the other transfer receivers 3b that have not raised the footer is stopped.

Next, a call from the main receiver 1 to the transfer receivers 3a and 3b will be explained.

When the handset 4 of the main receiver 1 is hooked up, the hook switch 7 switches and the voltage at point C decreases, inverting the output of the comparator 16 to L level. Power is supplied, and the buzzers 22 of the mobile receivers 3a and 3b sound to generate a ringing tone. For example, if the handset 6 of the transfer receiver 3a is hooked up in this state, the hook switch 9
switches to the handset 6 side, the voltage at point b in the main receiver 1 becomes below the reference voltage ■r1, the output of the comparator 14 goes to L level, and the outputs of comparators 14 and 16 go to L level, so the comparator 24 output is also L
By turning on the transistor Q3, the transistor Q1 is cut off, and the power supply to the communication line 111 is cut off, thereby stopping the ringing tone in the other mobile message receiving unit 1a3b.

Of course, when a call is made from the mobile receiver 3a, if the handset 6 of another mobile receiver 113b is hooked up, the ring tone in the main receiver 1 is stopped and the call is made to the mobile receiver 3a. You can make phone calls between 3B and 3B.

FIG. 2 is a circuit diagram showing another embodiment of the present invention. In this embodiment, a comparator 12 for detecting connection of one handset provided in the main receiver 1 of FIG. 14,
16, a Zener diode is used to detect one connection and two or more connections of the handset.

In FIG. 2, resistors R3 to R8 and capacitor C1
,C2 communication line 11.1 on transmitter 2a, 2b side
1, 2 and transfer reception i3a, 3b side call line n, io
, n, 1i and 112 are the same as in the embodiment shown in FIG.
It is also connected to the base of the transistor Q11 from the common connection end of the resistors R3 to R5 via the resistor R24 and the call indicator light 10, and the transistor Q11 can turn on the transistor Q12 and drive the buzzer 11. That's what I do.

The Zener voltage of the Zener diode ZD is selected so that it is turned off at the voltage at point e when one handset is connected, and turned on at the voltage at point e when two or more handsets are connected.

Note that the transmitters 2a and 2b have a handset 5 and a hook switch 8.
The transfer receivers 3a and 3b are equipped with the first
1 with a handset 6 and a light emitting diode 18 in the figure
It shows the part.

Next, to explain the operation of FIG. 2, for example, if the handset 5 of the transmitter 2a is hooked up and the hook switch 8 is closed, the resistor R25 in the main receiver 1, the call indicator light 10, the resistor R24, and the resistor R3 , current flows through the telephone line 11 through a path such that the telephone call indicator light 10 lights up and the transistor Q11 is turned on.
1 turns on, transistor Q12 turns on and buzzer 1 is turned on.
1 generates a ringing tone. Further, the transmission receiver 3a is turned on by turning on the transistor Q11.

Power is supplied to the telephone line 11 for the telephone 3b, and the light emitting diode 18 is driven to sound a buzzer and generate a ring tone.

For example, if the handset 4 of the main receiver 1 is hooked up in this state, the hook switch 7 switches to the handset 4 side, the voltage at point e further decreases, and the voltage applied to the Zener diode ZD increases the Zener voltage. It becomes conductive and turns on transistor Q13. Transistor Q11 is cut off by turning on transistor Q13, and communication line 1! , 11 by cutting off the power supply to the transfer receiver 3a.

The discharge sound at step 3b is stopped. Of course, the main receiver 1
The ringing tone is stopped when the hook switch 7 is switched by raising the footer of the handset 4, and the transistor Q12 is turned off.

As described above, in the embodiment shown in FIG. 2, the circuit configuration can be simplified by detecting one connection and two or more connections of the handset using the Zener diode DZ.

FIG. 3 is a circuit diagram showing another embodiment of the present invention, in which the comparator 12°14.1 installed in the embodiment of FIG.
6 is realized by a concrete transistor circuit, and furthermore, the main receiver 1 is provided with call selection switches 30a and 30b for selecting the call call of the transfer receiver, Main receiver 1, transfer receiver 3a,
Each of the transmitters 2a is shown with a jack terminal 40, 50, 60 instead of a handset.

The operation of the embodiment of FIG. 3 is as follows.

Now, if a handset is connected to the jack terminal 50 of the transmitter tff12a, then the transistor Q22 of the main receiver 1.
Q23. Each of Q24 turns on and transistor Q2
When transistor Q23 is turned on, the call indicator light 10 is turned on, and when transistor Q23 is turned on, the buzzer 11 is sounded to generate a ringing sound. Furthermore, by turning on the transistor Q24, power is supplied to the communication line 111, and the transmission receiver 3
The phototransistor 20 is turned on by the light emitting drive of the light emitting diode 18 of a, and the call indicator light 10 is turned on.
Turning on the transistor Q30 causes the buzzer 22 to sound and generate a ringing tone. At this time, transistor Q28 is in the off state when one handset is connected, and transistor Q25. Q26°Q27 is also off.

Next, when the handset is connected to the jack terminal 40 of the main receiver 1 in response to a ringing tone caused by the ringing of the buzzer 11, the transistor Q21 is turned on, and the transistor Q2 is turned on.
Since the emitter side of Q25.8 is connected to two handsets, transistor Q25.8 is turned on and transistor Q25.8 is turned on.
Q26. Q27 is turned on. This transistor Q25
．． When Q26 and Q27 are turned on, transistors Q21 and Q23 and Q24 are turned off, and when transistor Q23 is turned off, the buzzer 11 stops ringing, and at the same time, when transistor Q24 is turned off, the telephone line 111 is turned off.
The power supply to is cut off, the call indicator light 10 goes out, and the buzzer 22 stops sounding.

Next, when calling the transfer receiver 3a from the main receiver 1, it is sufficient to close the call selection switch 30a provided in the main receiver 1 and connect the handset to the jack terminal 40.

When the handset is connected to the jack 40, the transistor Q21 is turned on, power is supplied to the telephone lines I) and 11 via the telephone selection switch 30a, and the light emitting diode 18 of the transfer receiver 3a is driven to emit light. Transistor 20 is turned on, lighting up call indicator light 10, and transistor Q30 is turned on, which causes buzzer 22 to sound and generate a ringing tone. In this state, jack terminal 60
When the handset is connected to the main receiver 1, transistor 0
Since two handsets are connected to the emitter side of 28, it turns on, and turning on transistor Q27 cuts off transistor Q21, thereby cutting off the telephone line fL1.
1 and stops the ringing tone in the transfer receiver 3a.

Furthermore, when calling the main receiver 1 from the mobile receiver 113a, when a handset is connected to the jack terminal 60 of the mobile receiver 3a, the transistor Q22. Q2
3 is turned on and the call indicator light 10 is turned on, the buzzer 11 sounds at the same time, and if a handset is connected to the jack terminal 40 in this state, two handsets are connected to the emitter side of the transistor Q28. When the transistor Q26 is turned on, the transistor Q23 is cut off and the buzzer 11 stops sounding.

(Effects of the Invention) As described above, according to the present invention, in addition to calling the main receiver by the transmitter or the mobile receiver, the transmitter or the main receiver calls the mobile receiver to make a call. It is possible to communicate by telephone between the transmitter, the transfer receiver, and the main receiver, thereby enabling quick and smooth disaster prevention communication in times of emergency.

[Brief explanation of drawings]

FIG. 1 is a circuit diagram showing one embodiment of the present invention, FIGS. 2 and 3 are circuit diagrams showing other embodiments of the present invention, and FIG. 4 is a circuit diagram showing a conventional example. 1: Main receiver 2.2a, 2b: Transmitter 3.3a, 3b: Transfer receiver 4.5, 6: Handset 7.8.9: Wax switch 10: Call indicator light 11.22: Buzzer 12. 1=ll, 16.24: Comparator 18 Two light emitting diodes 20: Phototransistor

Claims (1)

[Claims] First call detection means for detecting connection of any one handset in the transmitter, transfer receiver, or main receiver; calling means for generating a call; second call detection means for detecting connection of any two or more of the handsets of the transmitter, the transfer receiver, or the main receiver; and the second call detection means. A telephone device for fire alarm equipment, comprising: a ringing stop means for stopping the ringing sound by the calling means based on the output of the detecting means.