JPH0666840B2 - Security device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Object of the Invention (Industrial field of application) The present invention relates to a security alarm function for detecting an abnormal condition by a sensor such as a fire or a gas leak and issuing an alarm sound, and a telephone using a communication line. And a security device having a room sound monitoring function.

(Prior Art) A conventional security device not only detects an abnormal condition with a sensor and emits an alarm sound, but also is connected to a call line to automatically send an alarm when an error occurs to the outside via the call line. Some are capable of making a notification, or some are capable of receiving ambient sounds such as room sounds by a control signal from an external telephone with an automatic incoming call function.

In order to realize a call function by a normal telephone in such a security device, a telephone and a security notification device are provided side by side, or a telephone with a handset capable of making and receiving calls is installed in the same housing. It is customary to configure it as a notification device, and in these configurations, it was customary to separately provide sound output means for issuing an alarm sound when an abnormality is detected and sound output means for receiving a telephone call. Further, it has been customary to separately provide an ambient sound transmitting means for listening to the room sound and a voice transmitting means for transmitting a telephone call via the communication line.

(Problems to be Solved by the Invention) In a conventional security device having both a telephone call function and a security alarm function, a call receiving function in a call and a warning sound output function when a sensor is abnormal are provided by separate sound output means. In addition, the speech sending function in a call and the ambient sound listening function of listening to the room sound from the external telephone are configured by different sound sending means. For this reason, it has been difficult to reduce the size of the security device, to make it economical, and to meet new needs.

The present invention has been made based on the above circumstances, and has an alarm sound sending function in the event of an abnormality and a call function that can be used as a telephone, and it is compact and space-saving and excellent in economic efficiency. It is an object of the present invention to provide a security device that can be used easily and conveniently.

[Structure of the Invention] (Means for Solving the Problems) In order to solve the above problems, a security device of the present invention outputs an alarm sound based on abnormality detection information by a sensor and connects to a telephone line to make a call. In a security device having a call function according to, a sensor information detecting means for detecting information from a sensor, an alarm sound generating means for generating an alarm sound, an alarm sound generated by the alarm sound generating means, and an alarm sound from the communication line. Sound output means for outputting a reception sound, sound output switching means for switching an alarm sound or a reception sound in response to an abnormality detection information by the sensor information detection means or an incoming call from a communication line, and outputting it from the sound output means, Output volume control means for adjusting the output volume of the sound output means according to the warning sound output state and the reception sound output state, and the call line connected to the call line A call answering means for automatically answering an incoming call from a line, an ambient sound detecting means for detecting an ambient sound by a control signal from an external telephone device, and an ambient sound detected by the ambient sound detecting means or a transmission sound by telephone. The gist of the present invention is to have sound transmitting means for transmitting to the line, and output level control means for adjusting the output level of the sound transmitting means to the communication line according to the ambient sound transmitting state and the transmission sound transmitting state.

(Operation) In the security device of the present invention, when an abnormality is detected by the sensor or when a call is received from the telephone line, the sound input switching means controls the switching of the signal path, and one sound output means switches the alarm sound or the reception sound. In addition to outputting, the output volume of the sound output means is adjusted to an appropriate level by the output volume control means according to the alarm sound output state and the reception sound output state.

On the other hand, one sound sending means sends ambient sound by a control signal from an external telephone device or sends a sending sound by telephone. At this time, the output level control means adjusts the output level of the sound output means to the communication line to an appropriate level according to the ambient sound transmission state and the transmission sound transmission state.

Thus, a compact, space-saving, highly economical and convenient security device is realized.

(Embodiment) An embodiment of the present invention will be described below with reference to FIG.

First, the configuration of the security device will be described. The security device 1 is provided with a plurality of sensors 2 for detecting an abnormal state such as a fire or a gas leak, and these sensors 2 form a sensor information detecting means. It is connected to the control circuit 4 as an output volume control means and an output level control means, which is composed of a CPU. Reference numeral 5 denotes a sound source circuit that is a sound source for an alarm sound, a security alarm described later, a ringing signal sound, a response message, and the like.
Is connected to a control line from the control circuit 4, and its output line is connected to a speaker 8 as an acoustic output means through one contact of the switching connection circuit 6 and the speaker amplifier 7. In the switching connection circuit 6 and the speaker amplifier 7,
A switching control line and a gain control line are respectively connected from the control circuit 4. Here, the sound source circuit 5 constitutes an alarm sound generating means, and the switching connection circuit 6 constitutes an acoustic input switching means.

On the other hand, a passage line 9 is connected to the security device 1,
The call line 9 is connected to a microphone 15 via a call switch circuit 11, a station line coupling circuit 12 including a transformer, a hybrid circuit 13 for separating a transmission signal and a reception signal, and a microphone amplifier 14. From the control circuit 4, a switch control line is connected to the call switch circuit 11, and a gain control line is connected to the microphone amplifier 14.

Since the speaker 8 is also used as an acoustic output means for outputting a reception sound during a telephone call, the branch line of the hybrid circuit 13 is connected to the speaker 8 via the other contact of the switching connection circuit 6 and the speaker amplifier 7. Has been done. Further, the microphone 158 constitutes an ambient sound detecting means, and is also used for transmitting a transmission sound during a telephone call and for transmitting an ambient sound such as room sound.

Reference numeral 16 is an incoming call detection circuit for detecting an incoming call from the communication line 9.
Reference numeral 7 is a storage circuit in which information such as the telephone number of the automatic report destination is stored, 18 is a key switch circuit that operates by pressing a response button (not shown), and 19 is a sedan for transmitting a dial signal corresponding to the telephone number. A circuit, 21 is a PB signal receiving circuit. Here, the incoming call detection circuit constitutes an incoming call response means, and the call switch circuit 11 and the office line coupling circuit 1 are provided.
2, the hybrid circuit 13, and the microphone amplifier 14 constitute a sound transmitting means.

Next, the operation of the security device configured as described above will be described for each operation of each function.

Alarm sound output operation When the sensor 2 detects a fire or gas leak, the control circuit 4 detects the abnormal state via the sensor interface circuit 3, and the switching connection circuit 6 switches to the sound source circuit 5 side by storage program control. To be Then, the sound source circuit 5 outputs an alarm sound from the speaker 8 via the switching connection circuit 6 and the speaker amplifier 7. At this time, in the speaker amplifier 7, the gain control is performed by the control circuit 4 so that the amplification degree is automatically adjusted, and the sound pressure of 70 dBspl (1 m in front) required for the security alarm is obtained from the speaker 8.

Further, at this time, if the operation mode of the security device 1 is set to the automatic notification state, a dial signal corresponding to the telephone number of the automatic notification destination stored in the storage circuit 17 under the control of the control circuit 4 is sent by the sender circuit. Call line 9 from 19
And the other party is automatically called. Then, after the other party responds, a security notification is given by an acoustic signal or a synthetic voice signal from the sound source circuit 5.

Telephone call operation When a telephone call is received in a normal state, after the incoming call is detected through the incoming signal detection circuit 16, the call signal sound is transmitted through the sound source circuit 5, the switching connection circuit 6 and the speaker amplifier by the control of the control circuit 4. Is output as a ring tone from the speaker 8.
Then, by pressing the response button, the response operation is detected by the control circuit 4 via the key switch circuit 18.
The call switch circuit 11, the switching connection circuit 6, the speaker amplifier 7, and the microphone amplifier 14 are controlled to enter the call state. Here, the other party's voice is output from the speaker 8 via the call line 9, the call switch circuit 11, the office line coupling circuit 12, the hybrid circuit 13, and the speaker amplifier 7. In this case, the other party's voice has a sound pressure level selected by the user in a sound pressure level range (50 to 60 dBspl) suitable for hands-free communication, so that the gain control of the speaker amplifier 7 is automatically performed.

Further, the sound transmitted to the other party is output from the microphone 15 to the call line 9 via the microphone amplifier 14, the hybrid circuit 13, the office line coupling circuit 12 and the call switch circuit 11. At the time of transmitting the transmission sound, the gain control of the microphone amplifier 14 is automatically performed so that the transmission output level becomes an appropriate level.

Operation when ambient sound such as room sound is monitored When the operation mode of the security device 1 is set to the automatic response state, when an incoming call is received, an incoming signal is detected via the incoming signal detection circuit 16, Control circuit 4
The call switch circuit 11 operates under the control of 1. and the response message is sent from the sound source circuit 5 to the call line 9 through the hybrid circuit 13, the office line coupling circuit 12, and the call switch circuit 11. At this time, when the room sound listening control command signal based on the PB signal or the like is transmitted from the transmitting side, the command signal is transmitted to the PB signal receiving circuit 21 via the call switch circuit 11, the office line coupling circuit 12 and the hybrid circuit 13. The indoor sound as the ambient sound is received and collected by the microphone 15 by the storage program control of the control circuit 4.

Then, the collected voice is subjected to gain control by the microphone amplifier 14, and then sent to the calling side through the hybrid circuit 13, the office line coupling line 12, the call switch circuit 11 and the call line 9, and in this way. Telecontrol function is realized. Since the room sound monitor function collects a wide range of ambient sounds, it is necessary to raise the sensitivity higher than the microphone sensitivity during normal hands-free communication. In this device, the microphone amplifier 14 is controlled by the stored program controlled by the control circuit 4. Is automatically adjusted to an appropriate output power level. As a result, the control circuit 4 appropriately adjusts and controls the microphone sensitivity during room sound monitoring and the microphone sensitivity in a normal call state, and both functions are realized by one dual-purpose microphone.

In the above-described embodiment, the same amplifier is used as the gain control means in the speaker amplifier and the microphone amplifier, but the control means by switching the amplifiers having different gains does not depart from the scope of the present invention. Absent. The same applies to a security notification device or the like that is connected to a key telephone device and a home telephone, has an incoming call detection means and the like in the main device, and performs subsequent operations by receiving a control signal from the main device.

[Effects of the Invention] As described above, according to the present invention, one sound output means switches and outputs an alarm sound or a reception sound by switching control of the sound input switching means, and one sound transmission means. The ambient sound is transmitted by the control signal from the external telephone device and the transmission sound is transmitted by the telephone. Further, the output volume of the sound output means and the output level of the sound transmission means to the communication line are in each output state or each output. It is adjusted to an appropriate level depending on the condition. Therefore, it is possible to provide a small-sized and space-saving security device which is economical and can be easily and conveniently installed in, for example, a workplace or a kitchen.

[Brief description of drawings]

FIG. 1 is a block diagram showing an embodiment of a security device according to the present invention. 1: Security device, 2: Sensor, 4: Control circuit, 5: Sound source circuit, 6: Switching connection circuit, 7: Speaker amplifier, 8: Speaker, 9: Communication line, 14: Microphone amplifier, 15: Microphone.

Continuation of the front page (56) Reference JP 62-245850 (JP, A) JP 61-25353 (JP, A) JP 62-11361 (JP, A) JP 58-94257 (JP , A) Actual development Sho 61-128790 (JP, U)

Claims (1)

[Claims] 1. In a security device which outputs an alarm sound based on abnormality detection information by a sensor and which is connected to a telephone line and has a telephone call function, a sensor information detecting means for detecting information from the sensor, An alarm sound generating means for generating an alarm sound, an acoustic output means for outputting an alarm sound generated from the alarm sound generating means and a reception sound from the communication line, and abnormality detection information by the sensor information detecting means or from the communication line The sound input switching means for switching the alarm sound or the reception sound according to the incoming call and outputting the sound output means from the sound output means, and the output volume for adjusting the output volume of the sound output means according to the warning sound output state and the reception sound output state. The control means, the incoming call response means connected to the call line and automatically answering an incoming call from the call line, and the ambient sound by the control signal from the external telephone device. Ambient sound detection means for detecting,
Acoustic sending means for sending the ambient sound detected by the ambient sound detecting means or the sound transmitted by the telephone to the communication line, and the output level of the sound output means for sending to the communication line, the ambient sound sending state and the sending sound sending state. And an output level control means for adjusting the security level according to the security level.