JPH01857A - emergency notification device - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to an emergency notification device that automatically reports an abnormal situation to a monitoring center via a telephone line when an abnormality is detected.

[Conventional technology]

FIG. 2 is a circuit diagram showing a conventional emergency notification device, and in the figure, 1 is an abnormality detection circuit such as an intrusion sensor,
When an abnormality is detected, an abnormality detection signal is output. Reference numeral 2 denotes a dialing signal sending means, which when supplied with a signal indicating that an abnormality has been detected from the abnormality detection circuit 1, automatically dials a preset telephone number, for example, a monitoring center, thereby transmitting a dialing signal. Supplied to telephone line 3.

In the emergency notification device configured in this manner, when the abnormality detection circuit 1 detects, for example, an intruder, it generates an abnormality detection signal and supplies it to the dial signal sending means 2. When the dial signal sending means 2 receives the abnormality detection signal, it sends a dial signal to the telephone line 3 by automatically dialing a preset telephone number of, for example, a monitoring center. The dialing signal sent to the telephone line is
Upon recognition by a central office exchange (not shown), this telephone line is switched and connected to the telephone line of the called party designated by the dial signal.

In this way, when the telephone line is connected to the called party, for example, a monitoring center, monitoring data such as the telephone number of the caller and the details of detected abnormalities are transmitted from the dial signal sending means 2 or another circuit (not shown). It is now being forwarded.

[Problem that the invention seeks to solve]

Conventional emergency notification devices start dialing the telephone line when an abnormality occurs in the monitored device, but at this time, if an abnormality occurs in the telephone line of the calling party or the called party. That is, if an intruder breaks in after cutting off the telephone line, there is a problem in that even if the abnormality detection circuit detects the intruder, normal notification to a predetermined monitoring center cannot be made.

This invention was made to solve the above-mentioned problems, and an object of the invention is to provide a device that can normally notify even if an abnormality occurs in a telephone line.

[Means for solving problems]

The emergency call device according to the present invention includes a dialing signal sending means for sending a dialing signal of a preset telephone number to a telephone line, and a dialing signal sending means for sending a dialing signal of a preset telephone number to a second telephone line when the current in the first telephone line is no longer detected. a first current detection means for connecting the dial sending means; a second current detecting means for connecting the dial sending means to the first telephone line when the current in the second telephone line is no longer detected; and a driving means for driving the dial sending means when at least one of the first or second current detecting means operates.

[Effect]

The emergency call device according to the present invention accommodates two telephone lines, and when an abnormality is detected in one line, it immediately uses the other line to automatically issue an alarm, which greatly improves safety in the event of a line abnormality. This will improve the results.

[Embodiments of the invention]

An embodiment of the present invention will be described below with reference to the drawings. 1st
In the figure, 3a is a first telephone line, 3b is a second telephone line, 4 is a first current detection means for detecting the current of the first telephone line 3a, and 4a is a first telephone line 3a. A relay that is energized when the first telephone line 3a is normal and de-energized when the first telephone line 3a is abnormal; 4b and 4c are break contacts of the relay 4a; 5 is a second current that detects the current of the second telephone line 3a; In the detection means, 5a is a relay that is energized when the second telephone line 3b is normal and de-energized when the second telephone line 3b is abnormal, 5b and 5c are break contacts of the relay 5a, and 6 is a contact. This is a driving means for driving the dial signal sending means 2 when at least one of 4C and 5C is turned on.

In the emergency notification device configured in this way, when the first telephone line 3a is normal, the first current detection means 4
A current is flowing through the first telephone line 3a through the relay 4a, and as a result, the relay 4a is energized and its break contact 4b is turned on.

4C is in an open state. In addition, the second telephone line 3b
Similarly, when the current is normal, current flows through the relay 5a of the second current detection circuit 5, and accordingly, the relay 5a becomes energized and its break contacts 5b and 5c become open. There is.

Here, if an abnormality such as disconnection occurs in the first telephone line 3a, a relay 4 provided in the first current detection means 4
The excitation of a will be released.

As a result, the break contact 4b of the relay 4a is turned on, and the dial signal sending means 2 is connected to the second telephone line 3b.

On the other hand, relay 4a is de-energized and its break contact 4
When C is turned on, a signal is supplied to the driving means 6 via this break contact 4c. The driving means 6 drives the dial sending means 2 by supplying the dial sending means 2 with a signal supplied through the break contact 4c. As a result, the emergency call device connects to the normal second telephone line 3.
b can be used to successfully make a call to a preset telephone number (monitoring center) to report that an abnormality has occurred in the telephone line.

Further, when an abnormality such as disconnection occurs in the second telephone line 3b, a relay 5a provided in the second current detection means 5 is activated.
The excitation of will be released. As a result, the break contact 5b of the relay 5a is turned on, and the dial signal sending means 2 is connected to the second telephone line 3a.

On the other hand, the relay 5a is de-energized and its break contact 5
When C is turned on, a signal is supplied to the drive means 6 via this break contact 5C. The driving means 6 drives the dial sending means 2 by supplying the dial sending means 2 with a signal supplied through the break contact 5C. As a result, the emergency call device connects to the normal first telephone line 3.
Using a, it is possible to successfully make a call to a preset telephone number (monitoring center) to report that an abnormality has occurred in the telephone line.

[Effects of the Invention] As described above, the emergency call device according to the present invention includes a dialing signal sending means for sending a dialing signal of a preset telephone number to a telephone line, and a current in the first telephone line is no longer detected. a first current detection means for connecting the dial sending means to a second telephone line when the current is detected; and a first current detecting means for connecting the dial sending means to the first telephone line when the current in the second telephone line is no longer detected; 2nd to connect
and a driving means for driving the dial sending means when at least one of the first and second current detecting means operates. For this reason, when an abnormality occurs in either of the two telephone lines, a normal line can be used to immediately make a report, resulting in a safer emergency call system. There is.

[Brief explanation of the drawing]

FIG. 1 is a circuit diagram of a main part of an emergency notification device according to the present invention, and FIG. 2 is a circuit diagram of a main part of a conventional emergency notification device. 1 is an abnormality detection circuit, 2 is a dial signal sending means, 3a,
3b is the first. a second telephone circuit; 4 and 5 are first and second current detection means; 4b, 4c, 5b, and 5C are break contacts;
6 is a driving means. In addition, in the figures, the same reference numerals indicate the same or equivalent parts. Agent Masuo Oiwa (2 others) Figure 1a Figure 2 3゜

Claims (2)

[Claims] (1) A dial signal sending means for sending a dial signal of a preset telephone number to a telephone line; and when the current in the first telephone line is no longer detected, the dial sending means is connected to a second telephone line. a first current detection means for connecting the dial sending means to the first telephone line when the current in the second telephone line is no longer detected; and driving means for driving the dial sending means when either one of the two current detecting means operates. (2) The first and second current detection means are connected to a relay connected between each line of the first and second telephone lines, and are turned on when the relay is de-energized to send the dial signal sending means to the other side. 2. The emergency notification device according to claim 1, comprising a contact connected to a telephone line and a contact that is turned on when the relay is de-energized and supplies a signal to the driving means.