JP2533760Y2 - Intercom master unit having monitor function and intercom system using the same - Google Patents

Description

[Detailed description of the invention] [Industrial application field] The present invention relates to an intercom master unit having a monitor function and an intercom system using the same, and more specifically, without taking up a handset on the intercom master unit side. The present invention relates to a device having a feature in that a sound of a door phone slave unit is automatically monitored.

[Prior art] An intercom base unit installed at the entrance of a dwelling unit and an intercom master unit installed in a dwelling unit are connected by a signal line, and a ringing tone is sounded at the intercom master unit by operating a call switch on the intercom unit side. An intercom system has been developed and used in which a telephone is ringed, and a handset is picked up and a telephone conversation is made with each other.

In such an intercom system, as shown in FIG. 2, an intercom slave unit 200 is installed at an entrance or the like, an intercom master unit 100 is installed on the indoor side, and these are connected by a signal line l. (Connected between the terminals T1 and TG of the master unit 100).

The operation will be described. When a visitor operates the call switch 200a of the child device 200, a call signal is transmitted via the signal line l to the base unit 10.
Transmitted to 0 side. In base unit 100, the ringing signal is received by ringing signal generating circuit 102 through interface circuit 104 (hereinafter referred to as I / F circuit), and the ringing signal is generated and output to ringing sound output means 101. In the ringing tone signal means 101, the ringing tone signal is amplified by the signal amplification circuit 101a, and the ringing tone is sounded from the speaker SP. When the dweller hears the ringing tone and picks up the handset H, the hook switch FS1 that closes in conjunction with the picking up of the handset H drives the call signal amplification circuit 103 to be energized, and the microphone on the handset 200 side. The voice signal of the visitor input at 200b is amplified by the call signal amplifying circuit 103 via the signal line l and the handset H
And the voice signal of the dwelling unit input on the handset H side is amplified by the call signal amplification circuit 103 and output from the speaker 200c on the handset 200 side via the signal line l so that the user can talk with each other. It has become.

However, in the intercom system having such a configuration, when the call switch 200a of the handset 200 is operated, unless the handset H is picked up, the sound of the handset 200 cannot be heard. When the handset H of the base unit 100 is picked up to listen to the voice of the 200 side, the handset 200 side knows that the voice of the base unit 100 has been transmitted and responded to the handset 200 side. Could not pretend to be. Also, even at night, when a person is at the entrance and wants to monitor the sound of the handset 200, the handset of the base unit 100 must be picked up every time, and improvement has been desired.

[Problem to be Solved by the Invention] The present invention proposed in view of the above-mentioned circumstances, if the monitor switch is set to the ON state in advance, when the call switch on the child device side is operated, or when the child device side The purpose of the present invention is to provide an intercom master unit having improved operability by automatically monitoring the sound of the slave unit with the speaker of the master unit when the human body detection sensor arranged in the unit detects a human body. And

Another object of the present invention, which is proposed at the same time, is to provide an intercom system in which operability is improved by using the intercom master.

[MEANS FOR SOLVING THE PROBLEMS] The present invention according to claim 1 proposed to achieve the above object provides a ringing tone signal according to a ringing signal transmitted by operating a ringing switch on a door phone slave unit side. A ring tone signal generating circuit for outputting a ring tone signal, ring tone output means for amplifying a ring tone signal output from the ring tone signal generating circuit, and ringing and outputting a ring tone, and a handset for communicating with the slave unit. And a hook switch that operates in conjunction with the pick-up of the handset, is energized and driven, amplifies the audio signal transmitted from the intercom slave unit, outputs the amplified signal to the handset side, and amplifies the audio signal on the handset side. In addition to the conventional intercom master unit having a call signal amplifying circuit for transmitting the call signal to the slave unit side, the sound signal of the doorphone slave unit is further expanded from the ringing tone output means. A monitor signal connection circuit for transmitting a voice signal from the intercom slave unit input to the call signal amplification circuit to the ringing tone output means side for outputting a voice, and a monitor switch; When the switch is set to the ON state, every time a call signal is input from the door phone slave unit, the call sound signal generation circuit outputs a ring control signal to the ring sound signal generating circuit to sound a ring sound. And a signal processing circuit that outputs a monitor control signal to the monitor signal connection circuit and transmits the audio signal of the intercom slave unit input to the call signal amplification circuit to the ringing sound output unit. Is provided.

In the present invention according to claim 2, the signal processing circuit receives the human body detection signal from a human body detection sensor for detecting a human body while the monitor switch is set to the ON state. A ringing control signal is output from the ringing tone output means to the ringing tone signal generation circuit to output a ringing tone, a monitor signal is output to the monitor signal connection circuit, and the ringing tone is input to the call signal amplifying circuit. It is configured to further have a function of transmitting the audio signal of the intercom slave unit to the ringing tone output unit side.

According to a third aspect of the present invention, there is provided an intercom system according to the present invention, wherein a door phone slave unit having a call switch attached to an entrance of a dwelling unit and the intercom master unit according to the first or second aspect are connected by a signal line. It is configured to be connected.

[Operation] In the present invention as set forth in claim 1, when the monitor switch provided in the signal processing circuit of the master unit is set to the ON state, a call signal is transmitted from the intercom slave unit via the signal line. When transmitted, the ringing signal is received by the signal processing circuit to output ringing control to the ringing tone signal generating circuit, and the ringing tone signal generating circuit receives the ringing control signal and generates a ringing tone signal to the ringing tone output means. Output and ring.
At the same time, when the signal processing circuit receives the calling signal, it outputs a monitor control signal to the monitor signal connection circuit, and calls the slave unit side audio signal input to the call signal amplifier circuit through the signal line through the monitor signal connection circuit. The sound is transmitted to the sound output means, and the sound of the slave unit is monitored and output. When the handset is picked up, the hook switch drives the call signal amplifier circuit to be energized, and a call is made mutually with the slave via the signal line.

On the other hand, when the monitor switch is not set to the ON state, the monitor control signal is not output from the signal processing circuit to the monitor signal connection circuit, so that the monitor output of the audio signal of the slave unit is not performed, and the handset is picked up and talking is performed. .

According to the second aspect of the present invention, when the human body detection signal is transmitted from the human body detection sensor attached near the child device while the monitor switch is set to the ON state, the human body is detected. The detection signal is received by the signal processing circuit in the same manner as in the first aspect, and a ringing tone is sounded by the same operation as when the calling signal is input, and a voice signal of the cordless handset is monitored and output. .

According to the third aspect of the present invention, the same operation as the first or second aspect is performed by connecting the intercom master unit and the intercom slave unit according to the first or second aspect with a signal line.

[Embodiment] An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 shows an intercom system in which an intercom master unit 1 of the present invention and an intercom slave unit 200 are connected by a signal line l. I do.

In the figure, reference numeral 11 denotes a door phone slave unit 20 via a signal line l.
This is a monitor signal connection circuit for transmitting the voice signal transmitted from the 0 side to the call signal amplification circuit 103 on the ringing tone output means 101 side. Reference numeral 10 denotes a signal processing circuit having a monitor switch SW1. When the monitor switch SW1 is set to the ON state, each time a call signal is input via the I / F circuit 12 from the doorphone slave device 200 side. At the same time, a ringing control signal is output to the ringing tone signal generation circuit 102 and a ringing tone is output from the ringing tone output means 101, and at the same time, a monitor control signal is output to the monitor signal connection circuit 11 and An operation of transmitting the input voice signal of the intercom slave 200 to the ringing tone output means 101 is performed. The monitor control signal output to the monitor signal connection circuit 11 is released by a hook switch FS2 that operates in conjunction with the pick-up of the handset H. In this embodiment, a human body detection sensor (not shown) is connected to the terminals T3 and TG via a signal line l. When the human body detection sensor detects a human body and outputs a human body detection signal, the signal line 1 through a signal processing circuit 10 through an I / F circuit 12 to automatically generate a ringing sound and monitor a sound signal on the handset 200 side in the same manner as when a calling signal is input. Have been.

Note that L1 is a call monitor indicator light that lights up when the call signal is transmitted from the slave 200 and the sound of the slave 200 is monitored when the monitor switch SW1 is operated, L2 is a human body detection monitor indicator light that lights up when a human body detection signal is input when the monitor switch SW1 is operated and the sound of the slave 200 is monitored.

Intercom master unit 1 and door phone slave unit having such a configuration
The operation of the intercom system, which is configured by connecting the signal switch 200 to the signal switch l, will be described below.
The operation when 1 is not set to the ON state is the same as the conventional operation, and a description thereof will be omitted.

When the call switch 200a of the child device 200 is operated, the signal line l
Is transmitted to the base unit 1 side (between the terminals T1 and TG) via.

In base unit 1, the transmitted ringing signal is received by signal processing circuit 10 via I / F circuit 12, and a ringing control signal is output to ringing tone signal generating circuit 102. Receiving a control signal and outputting a ringing tone signal to the ringing tone output means 10
Output to 1 to ring.

At the same time, when the signal processing circuit 10 receives the call signal, the signal processing circuit 10 turns on the call monitor indicator light L1 and outputs a monitor control signal to the monitor signal connection circuit 11, and
The audio signal input by the microphone 200b on the 0 side and input to the call signal amplifying circuit 103 via the signal line 1 is transmitted to the ringing tone output means 101 through the monitor signal connection circuit 11, and the audio of the slave unit is output to the monitor. I do.

When the handset H is picked up according to the ringing sound and the monitor output of the voice of the handset 200, the hook switch
The call signal amplifying circuit 103 is energized and driven by the FS1, and a call is made with the slave unit 200 via the signal line l.
If you pick up the handset H again, the hook switch FS
2 through the signal processing circuit 10 to the monitor signal connection circuit 11
The output of the monitor control signal to is canceled, the monitor output from the ringing sound output means 101 stops, and at the same time, the ringing monitor indicator L1 goes off.

If no response is made when the ringing tone sounds and the sound of the handset 200 is output on the monitor, the handset H is used after confirming that the visitor has left by the monitor output.
, The monitor state is released and the call monitor indicator L1 is turned off.

Next, regarding the operation when a human body detection signal is input from the human body detection sensor via the signal line 1 between the human body detection signal input terminals T3 and TG, the human body detection signal is transmitted to the I / F circuit 12 of the base unit 1. The point that the signal is transmitted to the signal processing circuit 10 in distinction from the call signal and the point that the human body detection monitor indicator L2 is lit while the sound of the slave 200 is being monitored are different. Are the same and will not be described.

In the present embodiment, the call monitor indicator light 2 is
00d is provided, and a signal line is added between the terminal T2 of the base unit 1 and a lighting operation is performed simultaneously with the call monitor indicator light L1 of the base unit 1 to display a monitor state.

As described above, in the intercom master unit 1 of the present invention, by operating the monitor switch SW1, the slave unit 200 is operated.
When the call switch 200a is operated on the side, the audio signal of the handset 200 is automatically monitored and output, so that, for example, it is possible to easily pretend to be away from home, etc. Is improved. In addition, child unit 20
Similarly, even when the human body detection sensor provided near 0 detects a human body, the audio signal of the child device 200 is automatically monitored and output, so that it is possible to improve security.

In the above embodiment, the ringing sound output from the base unit 1 when the call switch 200a of the slave unit 200 is operated and when the human body detection signal is input is the same, but the present invention is not limited to such a configuration. For example, the ringing tone signal generation circuit 102 may be provided with a function of outputting two different ringing tone signals, and different ringing may be performed depending on whether a ringing switch is operated or a human body detection signal is input. It is also possible to have a configuration in which sound can be output to enable easy identification. In the above embodiment, the human body detection sensor is mounted near the child device 200, but the human body detection sensor may be built in the child device 200.

According to the first aspect of the present invention, when the call switch of the slave unit is operated, the sound of the slave unit is automatically monitored and output by the master unit, so that an appropriate response can be made. Can do
An intercom master unit with improved operability can be provided.

According to the present invention described in claim 2, in addition to the effect described in claim 1, when the human body approaches the child device, the sound of the child device is automatically output to the parent device on the monitor. It is possible to provide an intercom base unit with improved characteristics.

According to the third aspect of the present invention, an intercom system with improved operability and security can be provided by using the intercom master unit according to the first or second aspect.

[Brief description of the drawings]

FIG. 1 is a block diagram of an intercom system using the intercom master of the present invention, and FIG. 2 is a diagram of a conventional intercom system. [Explanation of Signs] 1... Intercom master unit 10... Signal processing circuit 11... Monitor signal connection circuit 101... Ringing sound output means 102... Ringing sound signal generating circuit SW1. FS2: Hook switch 200: Doorphone slave 200a: Call switch l: Signal line

Claims (3)

(57) [Scope of request for utility model registration] 1. A ringing tone signal generating circuit for outputting a ringing tone signal in response to a ringing signal transmitted by operating a ringing switch on a door phone handset side, and a ringing tone signal output from the ringing tone signal generating circuit. Ringing sound output means for ringing and outputting a ringing tone; a handset for talking to the slave unit; and a hook switch that operates in conjunction with picking up of the handset. A call signal amplifying circuit for amplifying the transmitted audio signal and outputting the amplified signal to the handset side, and amplifying the audio signal of the handset side and transmitting the amplified signal to the handset side; In order to output the voice signal of the telephone set from the ringing tone output means in a loud voice, the voice signal from the door phone slave unit input to the call signal amplifier circuit is output. A monitor signal connection circuit for transmitting a signal to the ringing sound output means side; and a monitor switch. When the monitor switch is set to the ON state, the ringing switch of the doorphone is operated and the slave unit is operated. Each time a call signal is inputted from the side, a ring control signal is output from the ring sound output means to the ring signal generating circuit to generate a ring sound, and a monitor control signal is output to the monitor signal connection circuit. And a signal processing circuit for transmitting the audio signal of the intercom slave unit input to the call signal amplification circuit to the ringing sound output means side. Machine. 2. The signal processing circuit, when the monitor switch is set to the ON state, each time a human body detection signal is received from a human body detection sensor for detecting a human body, the signal processing circuit outputs a signal from the ringing sound output means. A ringing control signal is output to the ringing tone signal generating circuit to generate a ringing tone, and a monitor signal is output to the monitor signal connection circuit, so that the doorphone handset side input to the calling signal amplifying circuit is output. 2. The apparatus according to claim 1, further comprising a function of transmitting a voice signal to said ringing tone output means.
An intercom master unit having the monitor function described in 1. 3. An intercom base unit having a call switch attached to an entrance of a dwelling unit or the like and the intercom master unit according to claim 1 or 2 connected by a signal line. Intercom system.