JPH11136371A - Doorphone device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To avoid an unnecessary ring tone by providing a doorphone slave unit with a means, which detects an approaching human body and a doorphone master unit with a means which cancels a ring tone according to a human body detection of the doorphone slave unit. SOLUTION: When a standby-state off-hook is detected, a controlling part 11 acttiates a power feeding circuit 9 and a speech communication circuit 16. A power supply circuit 1 of a doorphone slave unit feeds power to a speech communication circuit 7 and also feeds power to a human body sensor 2 and when a human body is detected, a human body detection signaling circuit 3 sends a frequency signal that is different from a voice band. After an elapse of the time of a delay timer of a doorphone master unit, the output of a human body detection circuit 10 is confirmed, and when a human body is not detected, the circuit 9 is stopped to return to the standby state. However, if a human body is detected, the output of a sound pressure sensor 18 is read, and a ring tone generation circuit 14 is operated. When the output of the sensor 18 is less than a reference value, the circuit 9 is stopped to return to the standby state.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a door phone apparatus including a door phone slave unit installed outdoors and a door phone master unit installed inside a house.

[0002]

2. Description of the Related Art In a conventional intercom apparatus, when a call from a slave unit is detected, a pack tone is immediately emitted to the slave unit and a ring tone is also emitted to the master unit. Japanese Patent Laid-Open No. 6-18 / 1994 proposes changing the ringing tone to an appropriate volume level according to the surrounding acoustic environment when the ringing tone sounds.
No. 1490.

[0003]

However, when the calling button of the slave unit is pressed by mischief, there is a case where nobody is around the slave unit when the master unit answers, and when the ringing tone sounds. If the noise is too loud, you may not notice even if you increase the ringer volume level, and
Even if the user notices that a call has been made and stops the noise source, the sound of the ringing sound ends at that time, and the call may be missed.

An object of the present invention is to avoid mischief and to reduce missed calls even when the surrounding noise is loud.

[0005]

SUMMARY OF THE INVENTION An intercom apparatus according to the present invention has solved the above-mentioned problems, and an invention according to claim 1 is an intercom apparatus constructed by connecting an intercom slave unit and an intercom master unit. , The intercom slave unit is provided with means for detecting a nearby human body, and the intercom master unit is provided with means for canceling the ringing sound based on the human body detection result of the intercom slave unit.

According to a second aspect of the present invention, there is provided an intercom apparatus configured by connecting an intercom slave unit and an intercom master unit, wherein the intercom master unit detects a surrounding volume level, and detects the detected volume level. Means for ringing the ringing tone again.

According to a third aspect of the present invention, in the first aspect of the present invention, the intercom master unit has a ringing sound delay timer for delaying the ringing sound for a predetermined time when a call from the intercom unit is detected. The intercom slave unit is provided with a human body detection sensor for detecting a nearby human body after a predetermined time delay, and cancels a ringing sound when the human body detection sensor does not detect a human body.

[0008] Further, the invention according to claim 4 is based on claim 2.
In the invention described in the above, the intercom master unit is provided with a sound pressure sensor for detecting a sound volume level around the ringing sound, and when the output of the sound pressure sensor is higher than a certain level, the output of the sound pressure sensor within a certain period of time. When a certain level or less is reached, a ringing tone is sounded again.

Further, according to a fifth aspect of the present invention, in the fourth aspect of the present invention, the door phone handset includes a human body detection sensor for detecting a nearby human body when ringing a ringing sound again. If no human body is detected, the ringing tone is canceled.

[0010]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a block diagram showing an embodiment of a door phone apparatus according to the present invention.

FIG. 1 is a block diagram showing an embodiment of a door phone apparatus according to the present invention. In FIG. 1, reference numeral 1 denotes a power supply for receiving power from the door phone master and supplying power to each block of the door phone slave. The circuit, 2 is a human body detection sensor for detecting a human body around the intercom slave unit, 3 is a human body detection notification circuit for notifying the detection result of the human body detection sensor to the intercom master unit, 5
Is a call circuit for notifying the intercom master unit that the call button has been operated, and 7 is a call circuit for making a call.

Reference numeral 9 is a power supply circuit for supplying power to the intercom slave unit, 10 is a human body detection and detection circuit for detecting a human body detection result in the intercom slave unit, 11 is a control unit comprising a CPU, and 12 is a child unit. A call detection circuit for detecting a call from the handset, 13 is a back tone generation circuit for generating a back tone to the handset, 14 is a ring tone generation circuit for generating a ring tone in the base unit, and 16 is a call circuit for making a call. , 18 are sound pressure sensors for detecting the surrounding sound volume level.

Next, the operation of the intercom apparatus of the present invention configured as described above will be described with reference to the flowchart of FIG. 2 showing the operation of the intercom apparatus.

First, when the standby state off-hook is detected (step S1), the control section 11 operates the power supply circuit 9 and the communication circuit 16 (steps S2 and S3). The power supply circuit 1 of the intercom slave unit supplies power to the communication circuit 7, and the intercom slave unit and the intercom master unit enter a talking state. When power is also supplied to the human body detection sensor 2 and a human body is detected, the human body detection notification circuit 3 sends out a signal having a frequency different from the voice band. When recognizing this signal, the human body detection detecting circuit 10 detects that a human body has been detected.

When an on-hook is detected in the talking state (step S4), the power supply circuit 9 and the talking circuit 16 are stopped (step S5) and the operation returns to the standby state. When the call button 4 of the intercom slave unit is pressed in the standby state and the calling signal from the calling circuit 5 is detected by the call detecting circuit 12 (Step S).
6), the control section 11 activates the power supply circuit 9, activates the back tone generation circuit, and activates the delay timer (step S7). The delay timer is set to, for example, about 3 seconds.

The power supply circuit of the intercom slave unit supplies power to the communication circuit 7 and also to the human body detection sensor 2, and when a human body is detected, the human body detection notification circuit 3 operates at a frequency different from the voice band. Is transmitted. When the delay timer times out (step S8), the output of the human body detection detecting circuit 10 is confirmed (step S9). If no human body is detected, the power supply circuit is stopped (step S18) and the process returns to the standby state. .

If a human body is detected, the output of the sound pressure sensor 18 is read and the ringing tone generating circuit is activated (step S10). When the output of the sound pressure sensor 18 is less than the reference value, the power supply circuit is stopped (step S18) and the operation returns to the standby state. When the output of the sound pressure sensor 18 is equal to or greater than the reference value, a monitor timer is started (step S12). The monitor timer is set to, for example, 30 seconds. The output of the sound pressure sensor 18 is read (Step S14), and the comparison with the reference value (Step S15) is repeated until the monitor timer times out if the output of the sound pressure sensor is equal to or more than the reference value and no off-hook is detected. .

If an off-hook is detected (step S1)
6), the monitor timer is reset (step S19), and the communication circuit is activated (step S3) to enter the communication state. When the output of the sound pressure sensor falls below the reference value, the ringing tone generating circuit is activated again (step S17), the power supply circuit is stopped (step S18), and the process returns to the standby state. When the time of the monitor timer expires, the power supply circuit is stopped (step S18), and the process returns to the standby state.

[0019]

Since the door phone apparatus of the present invention has the above-described configuration, the invention according to claim 1 has means for detecting the surrounding human body in the door phone slave, and the door phone slave in the door phone master. Since there is provided a means for canceling the ringing sound based on the human body detection result, unnecessary ringing sound can be avoided.

According to the second aspect of the present invention, the intercom master unit is provided with means for detecting the surrounding volume level and means for generating a ringing tone again based on the detected volume level. Can be performed smoothly.

The invention described in claim 3 is the invention according to claim 1.
In addition to the effects of the invention described above, the ringing of the ringing sound due to the mischief can be prevented because the ringing of the ringing sound is canceled by detecting that the key has been tampered with.

Further, the invention described in claim 4 is the same as the invention described in claim 2.
In addition to the effects of the invention described above, in the case where the surrounding noise is large when the ringing tone is sounded, the ringing tone is sounded again after the surrounding noise is reduced, so that the ringing tone is rarely missed.

Further, the invention according to claim 5 has the effect of the invention according to claim 4, and furthermore, when ringing the ringing tone again, it is confirmed whether or not a visitor is still present. It is possible to prevent the sound from ringing again.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a configuration of an embodiment of a door phone device of the present invention.

FIG. 2 is a flowchart of a control unit showing an operation of the embodiment of the door phone apparatus of the present invention.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 power bribery 2 human body detection sensor 3 human body detection notification circuit 4 call button 5 call circuit 6 speaker 7 speech circuit 8 microphone 9 power supply circuit 10 human body detection detection circuit 11 control unit 12 call detection circuit 13 back tone generation circuit 14 ring tone Generation circuit 15 Speaker 16 Communication circuit 17 Handset 18 Sound pressure sensor

Claims (5)

[Claims] In a door phone apparatus constructed by connecting a door phone slave unit and a door phone master unit, means for detecting a nearby human body is provided to the door phone slave unit and a human body detection result of the door phone slave unit is provided to the door phone master unit. An intercom apparatus comprising: means for canceling a ringing sound. 2. A door phone apparatus comprising a door phone slave unit and a door phone master unit connected to each other, wherein the door phone master unit detects a surrounding volume level, and means for sounding a ringing tone again based on the detected volume level. A door phone device comprising: 3. The intercom master unit has a ring tone delay timer for delaying ringing of a ringing sound for a predetermined time when a call from the intercom slave unit is detected, and the intercom slave unit detects a nearby human body after a certain time delay. 2. The intercom apparatus according to claim 1, further comprising a detection sensor, wherein the ringing tone is canceled when the human body detection sensor does not detect a human body. 4. The intercom master unit is provided with a sound pressure sensor for detecting a surrounding volume level when the ringing tone sounds, and when the output of the sound pressure sensor is higher than a certain level, the sound pressure sensor is activated within a predetermined time. 3. The intercom apparatus according to claim 2, wherein a ringing tone is sounded again when the output falls below a certain level. 5. The intercom slave unit has a human body detection sensor for detecting a nearby human body when ringing a ringing sound again, and cancels the ringing sound when the human body detecting sensor does not detect a human body. The intercom apparatus according to claim 4, wherein: