JPH05210797A - Test switching circuit for automatic alarm - Google Patents

Abstract

PURPOSE:To attain a call from a telephone set or a private branch exchange even during the period of a test in an automatic alarm test switching circuit provided with an emergency alarming circuit for accessing a previously determined alarm destination by autodialing processing at the time of generating abnormality such as fire and burglar and sending a previously determined message. CONSTITUTION:The test switching device 1 is provided with line wire terminals 4a, 4b for connecting an external telephone line 3, private branch telephone terminals 6a, 6b for connecting a telephone set 5 and a private branch exchange (PBX), emergency alarm switching contacts 10a, 1Ob for separating the terminals 4a, 4b from the terminals 6a, 6b at the time of generating abnormality and switching and connecting the terminals 4a, 4b to an emergency alarm circuit 2, test terminals 8a, 8b for connecting a testing device 7 for testing the operation of the circuit 2, and a test switching circuit for switching and connecting the circuit 2 to the terminals 8a, 8b and switching and connecting the terminals 4a, 4b to the terminals 6a, 6b at the time of executing a test.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a test switching circuit for an automatic notification device equipped with an emergency notification circuit for calling a predetermined report destination by an automatic dial operation and sending a predetermined message when an abnormality such as a fire or theft occurs. Regarding

[0002]

2. Description of the Related Art Conventionally, as a test switching circuit of this type of automatic notification apparatus, for example, that shown in FIG. 3 is known. In FIG. 3, reference numeral 1 is an automatic notification device, which is an emergency notification circuit 2, external line terminals 4a and 4b for connecting an external telephone line 3, and a telephone set 5.
Private telephone terminal 6a for connecting a private branch exchange (PBX),
6b and test terminals 8a and 8b for connecting the test apparatus 7 are provided.

The external telephone line 3 is pulled in via the outside line terminals 4a and 4b, and is connected to the local telephone terminals 6a and 6b through the two-circuit test switches 9a and 9b and the emergency call switching contacts 10a and 10b. In normal times, the test switches 9a and 9b and the emergency call switching contacts 10a and 10b are on the side a shown in the figure, and the external telephone line 3 is connected to the telephone 5 so that telephone 5 can talk.

When an abnormality such as a fire or theft occurs, the emergency notification circuit 2 operates in response to a transfer signal from the fire receiver or the theft receiver. First, the built-in relay is turned on to turn on the emergency notification switching contacts 10a and 10b. Switch to side b, external telephone line 3
The telephone 5 is disconnected from and the emergency notification circuit 2 is connected.
Subsequently, the emergency notification circuit 2 calls a predetermined report destination by an automatic dial operation, and when an incoming call is detected, a voice signal of a predetermined alarm message is sent to notify the occurrence of an abnormality.

Further, at the time of the test, the test device 7 is connected to the test terminal 8
Connect the test switches 9a and 9b to b while connected to a and 8b.
By switching to the side, the external telephone line 3 can be disconnected and the test apparatus 7 can be connected to the emergency notification circuit 2. The test apparatus 7 is a pseudo switch having a role of a switch. The test device 7 is connected to a telephone 11 that functions as a report destination, for example, 119 or a secondary report destination (administrator).

[0006]

However, in the test switching circuit of such a conventional automatic notification device, if the test switches 9a and 9b are switched to the test side b during the test, the telephone 5 and the external telephone are also called. There is a problem that the telephone 5 and the private branch exchange cannot be used during the test because the telephone is disconnected from the line 3.

The present invention has been made in view of the above-mentioned conventional problems, and an object thereof is to provide a test switching circuit of an automatic notification device which enables a telephone call from a telephone or a private branch exchange even during a test. To do.

[0008]

To achieve this object, the present invention is constructed as follows. The reference numerals in the drawings of the embodiments are also shown. First, the present invention is directed to an automatic notification device 1 including an emergency notification circuit 2 that calls a predetermined notification destination by automatic dial processing and sends a predetermined message when an abnormality such as a fire or theft occurs.

In the present invention as a test switching circuit for such an automatic notification device 1, the external line terminals 4a and 4b for connecting the external telephone line 3, the telephone 5 and the private branch exchange (PBX) are provided.
The telephone terminals 6a, 6b for connecting the telephones, the emergency call switching contacts 10a, 10b for disconnecting the external line terminals 4a, 4b from the telephone terminals 6a, 6b and connecting to the emergency circuit 2 when an abnormality occurs, and the emergency circuit 2 Test terminals 8a and 8b for connecting the test device 7 for testing the operation of the above, and the emergency notification circuit 2 is switched and connected to the test terminals 8a and 8b during the test, and the external line terminals 4a and 4b are switched and connected to the telephone terminals 6a and 6b. And a test switch circuit that operates.

Here, the test switch circuit is a first switch contact (9a, 9b) for connecting the external line terminals 4a, 4b to the emergency notification circuit 2 during normal operation and for connecting the emergency notification circuit 2 to the test terminals 8a, 8b during testing. And the normal telephone terminal 6
External telephone terminals 4a and 4b are connected to a and 6b through emergency call switching contacts 10 and 10b, and in-test telephone terminals 6a and 6b are connected.
It is characterized by comprising a test switch having a second switch contact (9c, 9d) for directly connecting b to the external line terminals 4a, 4b.

The test switch circuit includes a test terminal 8a,
8b includes a switching relay 15 that operates by connecting the test apparatus 7 to the connector. The switching relay 15 connects the external line terminals 4a and 4b to the emergency notification circuit 2 when the connector is not connected, and connects the emergency notification circuit 2 to the test terminal 8a when connecting the connector. 8b is connected to the first relay contact (16a, 16b) and external telephone terminals 6a, 6b are connected to the outside telephone terminals 4a, 4b via the emergency call switching contacts 10a, 10b when the connector is not connected, and the telephone is used for the private telephone at the time of connector connection. Terminals 6a and 6b are external wire terminals 4
2nd relay contact (16c, 1) directly connected to a, 4b
6d) is provided.

[0012]

According to the test switching circuit of the automatic notification device of the present invention having such a configuration, the test device is connected to the emergency notification circuit during the test, and at the same time, the external telephone line is connected to the telephone set or the private branch exchange. , You can use your phone while you are testing.

Further, by connecting the test device to the automatic notification device by a connector, a test state in which the test device is connected to the emergency notification circuit and at the same time the external telephone line is connected to the telephone or the private branch exchange can be automatically obtained, and the connector can be removed. For example, since it returns to the original state, it is possible to reliably prevent forgetting to recover after the test, and the test operation becomes easy.

[0014]

1 is a circuit block diagram showing an embodiment of the present invention. In FIG. 1, 1 is an automatic notification device,
Emergency call circuit 2, external line terminals 4a and 4b for connecting an external telephone line 3 such as NTT, telephone 5 or private branch exchange (P
BX) for connecting to the telephone terminals 6a, 6b, and test equipment 7 for connecting the test terminals 8a, 8b.

The external telephone line 3 connected to the external line terminals 4a and 4b is connected to the local telephone terminal 6 on the telephone 5 side through emergency call switching contacts 10a and 10b operated by the emergency call circuit 2.
It is connected to a and 6b. The emergency notification circuit 2 receives a transfer signal from the fire receiver or the theft receiver when a fire or theft occurs and performs an emergency notification operation. That is, when the transfer signal is received, the built-in relay is turned on to switch the emergency notification switching contacts 10a and 10b from the illustrated side a to the side b,
The external telephone line 3 is connected to the emergency notification circuit 2. A report destination is set in advance in the emergency report circuit 2. For example, taking an emergency call during a fire as an example, 119 is set as the primary call destination, and the telephone number of the person in charge of managing the building or equipment is set as the secondary call destination.

Therefore, when the external telephone line 3 is connected to the emergency notification circuit 2 by switching the emergency notification switching contact 10a, 1
An automatic dialing operation is performed on No. 119 as the next report destination, and when an incoming call response from No. 119 is obtained, a voice signal of a message indicating the occurrence of fire is transmitted. After the notification to 119 as the primary notification destination is completed, the secondary notification destination is automatically dialed and a voice signal of a message indicating the occurrence of a fire is transmitted. Then, when a series of reporting operations is completed, the emergency reporting switching contacts 10a and 10b are returned to the a side to recover. The emergency call state may be maintained as long as the transfer signal is obtained.

For such an automatic notification device 1, a first test switch 9a, 9b and a second test switch circuit are provided as a test switching circuit.
Test switches 9c and 9d are provided. The first test switches 9a and 9b are normally on the a side shown in the figure with respect to the emergency call circuit 2 and are connected to the external telephone line 3, and at the time of the test, they are switched to the b side by a switch operation to the test position. Instead, the test terminals 8a and 8b for connecting the test apparatus 7 are connected to the emergency notification circuit 2.

The second test switches 9c and 9d are normally located on the side a in the figure, and are connected to the internal telephone terminals 6a and 6b to which the telephone 5 is connected via the emergency call switching contacts 10a and 10b. External line terminal 4 connected to external telephone line 3
a and 4b are connected. When the switch is switched to the test position during the test, the second test switches 9c and 9d are switched to the b side, and the b side is the first test switch 9a and 9d.
Since it is connected to the primary side of b, the external telephone line 3 is directly connected to the telephone 5, and the test apparatus 7 and the emergency notification circuit 2 side are disconnected from the external telephone line 3 and the telephone 5.

Of course, the first test switches 9a and 9b and the second test switches 9c and 9d are separated for convenience of explanation, and the actual switch is a single test in which the switch contacts of four circuits are interlocked and switched. A switch is used. Next, the operation of the embodiment shown in FIG. 1 will be described. First, in normal times,
As shown, the external telephone line 3 is connected to the first test switch 9
a, 9b, emergency contact switching contacts 10a, 10b, and second
It is connected to the telephone 5 through the test switches 9c and 9d, and the telephone 5 can talk.

Next, when an alarm signal based on the detection of a fire or theft is given to the emergency notification circuit 2 from a fire receiver, a theft receiver, or the like, the relay is turned on so that the emergency notification switching contacts 10a and 10b are turned on. The emergency call operation can be performed by switching from the side to the side b, disconnecting the external telephone line 3 from the telephone 5 and connecting to the emergency call circuit 2.

Further, at the time of testing the automatic notification device 1, the test device 7 is connected to the test terminals 8a and 8b.
The test device 7 is connected to the telephone 119 as a pseudo-reporting destination or the secondary reporting destination. During the test when the test apparatus 7 is connected, the first and second test switches 9a to 9d are switched from the a side to the b side. By switching the first test switches 9a and 9b to the b side, the test device 7 is connected to the emergency notification circuit 2 via the emergency notification switching contacts 10a and 10b. At the same time, the second test switch 9
The external telephone line 3 is directly connected to the telephone 5 by switching c and 9d to the b side.

Therefore, the telephone 5 can be used even during the test, and the test device 7 can test the emergency call circuit 2 regardless of the external telephone line 3. Here, the test operation by the test apparatus 7 will be briefly described as follows. Now, for example, when a pseudo input corresponding to a transfer signal from a fire receiver is applied to the emergency notification circuit 2 by operating a test switch or the like, the emergency notification switching contacts 10a and 10b are switched to the b side and the 119th Automatic dial operation is performed. When the test device 7 receives and translates the dial signal by the automatic dialing operation for No. 119, 11
A call signal is sent to the telephone 11 provided for No. 9 to make a call, and when the telephone 11 is off-hook, a callable state with the emergency notification circuit 2 is formed.

At this time, the type of dial signal and the dial number are displayed on the display provided in the test apparatus 7. The voice signal of the message is sent from the emergency notification circuit 2 in this call path forming state, and the on-hook operation of the emergency notification circuit 2 is performed at the end of the call. Even if the emergency call circuit 2 performs the on-hook operation, the test apparatus 7 keeps the communication path forming state unless the 119 side of the telephone 11 opens the line.

FIG. 2 is a circuit block diagram showing another embodiment of the present invention. In this embodiment, the test apparatus is automatically switched to the test state only by connecting the test apparatus to the automatic notification apparatus. It is characterized by doing so. In FIG. 2, a test connector 13 of the automatic notification device 1 is additionally provided with test switching terminals 8c and 8d in addition to the test terminals 8a and 8b, and a switching relay 15 is connected to the terminal 8c. The power supply voltage + Vc is connected and supplied to the terminal 8b.

On the other hand, in addition to the test terminals 14a and 14b, the test connector 14 of the test apparatus 7 includes the test switching terminal 1
4c and 14d are provided, and these terminals 14c and 14d are short-circuited and connected by a crossover wire. Therefore, the test connector 14 of the test device 7 is replaced with the test connector 13 of the automatic notification device 1.
, The power source voltage + Vc is applied to the switching relay 15 via the terminals 8d, 14d, 14c and 8c of the connectors 13 and 14, and the switching relay 15 operates.

The switching relay 15 has first relay contacts 16a and 16 corresponding to the first test switches 9a and 9b in FIG.
b, and second relay contacts 16c and 16d corresponding to the second test switches 9c and 9d in FIG. 1, and when the switching relay 15 is turned on, the first relay contacts 16a and 16b are provided.
And the second relay contacts 16c and 16d are switched from the a side to the b side to automatically create a test switching state in which the test device 7 is connected to the emergency notification circuit 2 and at the same time the external telephone line 3 is connected to the telephone 5.

The other construction is the same as that of the embodiment shown in FIG. When the connector 14 is removed from the connector 13 after the test, the switching relay 15 is turned off, and the first relay contacts 16a, 16b and the second relay contacts 16c, 1
6d can be returned to the side a again and can be automatically restored to the normal state, and there is no possibility of forgetting to restore as in the operation of the changeover switch.

[0028]

As described above, according to the present invention, at the time of testing the automatic notification device, the test device is connected to the emergency notification circuit and at the same time the external telephone line is disconnected to directly connect to the telephone set or the private branch exchange side. Because the connection is made, the telephone and private branch exchange can be used as usual even during the test, and the test of the automatic notification device does not interfere with the use of the phone, and the test of the automatic notification device without prohibiting the use of the phone Can be done properly.

Further, by automatically switching to the test state by connecting the connector of the test apparatus, the test state switching operation and restoration can be facilitated, and forgetting to restore after the test can be surely prevented.

[Brief description of drawings]

FIG. 1 is a circuit block diagram showing an embodiment of the present invention.

FIG. 2 is a circuit block diagram showing another embodiment of the present invention.

FIG. 3 is a circuit block diagram of a conventional device.

[Explanation of symbols]

 1: Automatic reporting device 2: Emergency reporting circuit 3: External telephone line 4a, 4b: External line terminal 5: Telephone (or private branch exchange) 6a, 6b: Private telephone terminal 7: Test equipment 8a, 8b: Test terminal 9a, 9b: 1st test switch 9c, 9d: 2nd test switch 10a, 10b: Emergency call switching contact 11: Telephone (for 119 or for secondary call destination) 13, 14: Connector 15: Switching relay 16a, 16b: First relay contact 16c, 16d: second relay contact

Claims (3)

[Claims] 1. An automatic call device having an emergency call circuit for calling a predetermined call destination by an automatic dial operation and sending a predetermined message when an abnormality such as a fire or theft occurs is connected to an external telephone line. External line terminal, private telephone terminal for connecting a telephone or private branch exchange, emergency call switching contact for disconnecting the external line terminal from the private telephone terminal and switching to the emergency call circuit when an abnormality occurs, and operation of the emergency call circuit And a test switch circuit for connecting the emergency notification circuit to the test terminal and for connecting the external line terminal to the telephone terminal at the time of testing. Test switching circuit of automatic notification device. 2. The test switching circuit of the automatic notification device according to claim 1, wherein the test switch circuit connects an external line terminal to the emergency notification circuit during normal operation and connects the emergency notification circuit to the test terminal during testing. The switch contact of 1 and the outside telephone terminal are usually connected to the telephone terminal of the premises via the emergency call switching contact, and the telephone terminal of the premises is directly connected to the outside telephone terminal during the test.
A test switching circuit for an automatic notification device, which is provided with a test switch having a switch contact. 3. The test switching circuit of the automatic notification device according to claim 1, wherein the test switch circuit includes a switching relay that operates by connecting a connector of the testing device to the test terminal, and the switching relay is a non-connector. Connect the external line terminal to the emergency call circuit when connecting and the first relay contact that connects the emergency call circuit to the test terminal when connecting the connector, and connect the external line terminal to the premises telephone terminal via the emergency call switching contact when the connector is not connected A test switching circuit for an automatic notification device, comprising a second relay contact for directly connecting a local telephone terminal to an external line terminal when a connector is connected.