JP2672882B2 - Communication device - Google Patents

Description

The present invention relates to a communication device for transmitting data and voice via a telephone line.

[Conventional technology]

A conventional device of this type is shown in FIG.
In the figure, (1) is a DC cut capacitor (2)
And an incoming signal detection relay having an incoming signal detection relay (3) and its contact (3b), (4) CPU, (5) contact (5a)
A line connection relay having (6), a call line connection relay having a contact (6c) for connecting a handset to a telephone line, (7) a handset such as an intercom provided in an elevator car, (8) ) Is separated from the line in terms of direct current,
A transformer for connecting only voice and data is shown, and a communication device having these configurations operates as follows.

The operation will be described below with reference to the flowchart of FIG. First, referring to FIG. 5 showing the operation upon receiving a call, when a communication device installed in a remote monitored building or the like makes a call to the device installed in a monitoring center or the like through a telephone line, the device is connected to the phone line of the device. An incoming signal is input, and this signal drives the incoming signal detection relay (3) via the capacitor (2) of the incoming detection circuit (1). When the CPU (4) detects that the contact (3b) of the relay (3) is on, it turns on the line connection relay (5) (S41, S42). This turns on the contact (5a) and connects the line.

After that, when the CPU (4) receives a signal instructing to start a call from the communication device of the monitored building, that is, a call circuit connection signal (S43), the CPU (4) turns on the call circuit connection relay (6) to establish a telephone line. Connect the handset (7) (S44). After a call is made between the two communication devices, the CPU (4) turns off the line connection relay (5) to connect the line and terminate the communication (S45, S46).

In this example, the monitored building side detects an abnormality in the elevator etc., and the monitoring center side is notified, and then the state of the monitored building side is confirmed through voice by utilizing the communication line. An example is a direct story of an elevator, for example.

[Problems to be solved by the invention]

As described above, since the conventional communication device is configured as described above, when testing the function of this device, especially the voice circuit, for example, when testing the communication device on the monitored building side, Both the surveillance building side and the surveillance center side, that is, both parties of the call, need to be staffed and tested.

Further, Japanese Patent Laid-Open No. 63-262381 discloses a technique for ringing a buzzer provided on the tested side to test the sound collecting device on the tested side. ,
Japanese Patent Laid-Open No. 60-196058 discloses a technique for remotely controlling a distant device through a line, and a technique for providing a sounding device based on CPU control. It was not applied to a system in which the side and the center side communicate with each other via a telephone line, and did not enable testing of the handset of the monitored side.

The present invention has been made to solve the above problems, and an object of the present invention is to obtain a communication device capable of automatically performing a test on the monitoring center side even if only the monitored building side has a person. .

[Means for solving the problem]

The communication device according to the present invention is a communication device that includes a handset and transmits data and voice through a telephone line, and has means for automatically responding to an incoming call on the line and an audible signal indicating the start and completion of a call test to a partner device. An audible signal generator that sends a signal, a voice detection circuit that sends an ON output when the voice signal from the other party's device is above a certain value, and the above audible signal after receiving the call test command transmitted from the other party's device. The signal generator is driven to send an audible signal indicating the start of the call test to the other device, and then the voice detection circuit is connected to the line to turn on after the voice detection circuit outputs an ON output. When the output state is maintained for a certain period of time, the audible signal generator is driven to control the sending of an audible signal indicating the completion of the call test to the partner device.

[Action]

In the communication device of the present invention, when the call test command signal is received from the communication device on the monitored building side, the control means sends an audible signal to the line side, connects the voice detecting circuit to the line, and then monitors the monitored signal. When an off state is connected for a predetermined time after the voice from the building communication device is detected by the voice detection circuit, the audible signal generator is operated to send the test completion signal to the line.

〔Example〕

Hereinafter, an embodiment of the present invention will be described with reference to FIG. 1 in which the same parts as those in FIG. In FIG. 1, (9) is, for example, a PB signal (push button signal)
An audible signal generator consisting of a transmission circuit, (10) a voice detection circuit whose output is turned on only during the period when the voice signal on the line is above a predetermined value, (11) the voice detection circuit (10) on the line A relay for connecting a detection circuit having a contact (11d) for connection. In this embodiment, the CPU (4) transmits an audible signal when receiving a call test command signal from the communication device on the monitored building side. After sending out to the side, the voice detection circuit (10) is connected to the line, and after that the voice from the monitored building side communication device is detected by the voice detection circuit (10) and when the off state is connected for a predetermined time, an audible signal is generated. The device (9) is operated to control the sending of a test completion signal to the line.

Next, the specific operation of the CPU (4) will be described based on the flowchart shown in FIG. In FIG. 2, when a test signal transmitted from the monitored building side communication device is received after the incoming call is answered (S21 to S2) as in the conventional example.
3), the CPU (4) drives the audible signal generator (9) (S2
4) Send an audible signal to the line (for example, send "pip, pip, pip" twice). After this, the CPU (4) turns on the detection circuit connection relay (11), and the voice detection circuit (1
0) is connected to the line (S25). When voice is transmitted from the monitored building communication device (S26), voice detection circuit (10)
Is turned on for only the detection period, the CPU (4) turns on the voice detection circuit (10) once (after test transmission),
When the off state continues for a certain period of time (for example, 3 seconds or more) (S27), the audible signal generator (9) is turned on (S28), a test completion sound (response sound), a signal (for example, a beep sound for 3 seconds)
To the line, and then turns off the relays (5) and (6) for connecting the line and communication circuit and returns to the standby state (S29, S3
0).

〔The invention's effect〕

As described above, according to the present invention, since the voice signal is automatically detected on the center side, the function test of the monitored building side communication device can be automatically performed, and the voice can be output for a certain period of time after the voice detection. By transmitting the response sound, that is, the test completion sound to the monitored building side after confirming that it is cut off, the monitored building side can confirm the test completion sound after the test transmission is completed, and the test transmission is in progress. The problem that the test completion sound sounds and it becomes difficult to judge is solved. That is, in the device that is going to perform the call test, by transmitting the call test command to the device that executes the test, the audible signal indicating the start of the call test sent from the device that executes the test is confirmed based on this. If the call function is normal by outputting the audio signal, the device that executes the test recognizes that the audio signal is above a certain value, and after a certain time after the output of the audio signal from the device that executes the test. Since an audible signal indicating the completion of the call is sent, the device that issued the test command can confirm that the call function is normal. On the other hand, an audible signal indicating the completion of the call can be confirmed even after a certain time has elapsed after the output of the audio signal. If the signal is not sent, it can be surely detected that the call function is abnormal, and in this case, this call test only needs to be done by the person who sends the call test command. , It is not necessary to place the attendant to both of the other party, it can be automatically tested by the test execution side apparatus.

[Brief description of the drawings]

FIG. 1 is a block diagram of a communication device according to an embodiment of the present invention,
2 is an operation flowchart by the CPU (4) in FIG. 1, FIG. 3 is a configuration diagram of a conventional example, and FIG. 4 is a CP of the conventional example.
It is an operation | movement flowchart by U (4). In the figure, (1) is an incoming call detection circuit, (4) is a CPU, (5) is a line connection relay, (6) is a call circuit connection relay,
(7) is a handset, (9) is an audible signal generator, (10) is a voice detection circuit, and (11) is a detection circuit connection relay. In the drawings, the same reference numerals indicate the same or corresponding parts.

Claims (1)

(57) [Claims] 1. In a communication device equipped with a handset to transmit data and voice through a telephone line, means for automatically responding to an incoming call on the line and an audible signal indicating the start and completion of a call test to a partner device. Audible signal generator, a voice detection circuit that outputs an ON output when the voice signal from the other party's device exceeds a certain value, and the above-mentioned audible signal generator after receiving the call test command transmitted from the other party's device To control the transmission of an audible signal indicating the start of the call test to the other party's device, and then control the connection of the voice detection circuit to the line to output the ON output from the voice detection circuit, and then the OFF output state. A communication device, comprising: a control means for driving the audible signal generator to maintain an audible signal indicating completion of a call test to a partner device when the audible signal generator has been maintained for a certain period of time.