JPS58173952A - Emergency informing device - Google Patents

Abstract

PURPOSE:To decrease the probability of busy state and to inform an emergency signal surely, by switching the operating line into the 2nd line for plural telephone lines for automatic redialing when a monitor station discriminates the line to be busy, and performing redialing after switching the telephone lines sequentially. CONSTITUTION:When telephone lines L11, L21 are busy, the busy state is detcted at a busy state detection circuit 3 and an automatic redialing control circuit 5 is driven with an output signal bs. The circuit 5 drives an automatic dial circuit 1, changes over a switch C in the position shown in dotted lines, connects other telephone lines L12, L22 and starts the calling of the monitor station. Thus, when a response signal is returned from the monitor station, an emergency signal is transmitted, and if the monitor station is busy, the lines L12, L22 are switched again and redialed on the lines L11, L12.

Description

[Detailed Description of the Invention] This invention provides an emergency notification device, in particular, when an abnormal situation such as a fire or trespass occurs, a telephone line is used to notify a remote monitoring station. The present invention relates to a device that can be applied when reporting an It signal.

Conventional emergency notification devices of this type utilize telephone lines, and when an abnormal situation occurs, automatic dialing means is used to send an emergency signal to a monitoring station.

However, such conventional devices have the disadvantage that if the telephone line becomes busy due to a malfunction or the like, even if an abnormal situation occurs, it will not be possible to send an emergency signal to the monitoring station.

This invention was made in order to eliminate the above-mentioned drawbacks of the conventional technology, and therefore, the purpose of this invention is to provide a new emergency notification system that can reduce the probability of a telephone line being busy and that can reliably report an emergency signal to a monitoring station. The goal is to provide equipment.

In this invention, a plurality of telephone lines, automatic dial activation means, automatic dialing means, automatic redial control means, busy detection means, response detection means, line switching means,
Equipped with an emergency (No. N delivery cow stage), in the event of an abnormality,
The automatic dialing activation means activates the self-#JJ dialing means, calls the distant monitoring station F9r through the first telephone line, and when the response detection means detects a response from the monitoring station, the emergency emergency number is activated. The sending means is activated to send out Hiki 4d, and if the busy detection means determines that the monitoring station is busy, the line switching means is activated to switch to the second telephone line, and the line switching means is automatically switched to the second telephone line. The previous dC objective is achieved by activating the redial control means to automatically dial again, and in the same manner, when the monitoring station is busy, the telephone line is sequentially switched and redial is performed.

Next, preferred embodiments of the present invention will be specifically explained with reference to the drawings.

FIG. 1 is a block diagram showing one embodiment of the emergency oil @ device according to the present invention. @1 The example shown in FIG. 1 shows a case where two telephone lines are used.

In the figure, reference number 1 is an automatic dialing circuit, 2 is a number setting circuit, 5 is an answer busy detection circuit, 4 is an emergency signal sending circuit, 5 is an automatic redial control circuit, C is a changeover switch,
D is dial relay, L is line holding relay, Lll,
L21, L1 and L12 are telephone lines, T is a hybrid transformer, and 1 is an automatic dial activation contact, respectively.

When an abnormal situation such as a fire or intrusion occurs, the automatic dial activation contact 8 closes, and the contact - closes, which activates the line holding relay L, which closes the contact 1 of the line holding relay L, and the telephone line L11%L21 is captured. At the same time, contact a's
"Closed", the automatic dialing circuit 1 is activated, and the number setting circuit 2 intermittently operates the dial relay D to dial the telephone number of a remote monitoring station set in advance. The telephone lines ML11 and L21 open and close continuously, creating a dial pulse.

Now, first, if the telephone line is not busy, the dial pulse is sent to the exchange via the 11th line L11L21, the monitoring station is called, and when the monitoring device of the monitoring I9r responds, a response signal is sent back. Ru. The returned response signal passes through the telephone line L1z s L2z % changeover switch C, the hybrid transformer T, and enters the response/busy detection circuit 3. The response/busy detection circuit 3 is a circuit that detects a response signal and a busy signal, and when a response signal is sent back, it detects this and the #! The emergency signal sending circuit 4 is driven by the output a8 of 1. The emergency signal sending circuit 4 is a circuit that generates a signal corresponding to an abnormal situation such as a fire or an intrusion, and sends an emergency signal to a monitoring device at a monitoring station via a hybrid transformer T1 changeover switch C.

Next, if telephone lines HLll and L21 are busy due to a malfunction or other reason, a busy tone is sent back from the exchange, and the busy tone is transmitted through the same route as the response signal, It enters the middle detection circuit 6. When the response/busy detection circuit 6 detects that the call is busy, the automatic redial control circuit 5 is driven by the output wg+ba. Automatic redial control circuit 5
drives the automatic dialing circuit 1, switches the changeover switch C to the dotted line side, and connects the other telephone line Lll
Connect L21. Then, the automatic dialing circuit 1 starts operating again to call the predetermined telephone number of the monitoring station.

In this way, in the same way as the above-mentioned operation, if a response signal is returned from the monitoring device of the monitoring station, an emergency signal is sent out, and if the monitoring station is busy, the telephone lines L1aSL2a are switched again to the telephone lines L11 and Lll1, Redial.

Although the above embodiment has been described using two telephone lines, it is clear that the same explanation can be applied to the case where two or more telephone lines are used.

As explained above, according to the present invention, since a plurality of telephone lines are used, emergency alarms such as fire and intrusion can be reliably sent to the monitoring station, and are of high practical value.

Although the present invention has been described above with reference to one preferred embodiment thereof, this is merely an example, and it goes without saying that the present invention is not limited only to the embodiment described herein.

[Brief explanation of drawings]

FIG. 1 is a configuration diagram showing an embodiment of an emergency notification device according to the present invention. 1. Musical accompaniment/auto dial/dial circuit, 2. Fist/sign setting circuit,
3... Answer busy detection circuit, 4... Emergency signal sending circuit, 5-... Automatic redial control circuit, Lll, 1, 2
1, Lllll, L21...Stein-1 second 11t
Talk line, C...changeover switch, T...hybrid transformer, 8...automatic dialing mJ contact, Lll/
...Line holding relay and its contacts, D, d...Dial relay and its contacts, aa, baφ...Response, output of busy detection circuit 3 Patent applicant Nippon Kanki Co., Ltd. Patent applicant Sogo Security Security Co., Ltd. Company agent
Patent Attorney Yutabe Kumagai 7-305

Claims (1)

[Claims] An emergency notification device that uses a telephone line to report an abnormal situation to a distant monitoring station, which includes a plurality of telephone lines, an automatic dial activation means, an automatic dialing means, an automatic redial control means, and a busy detection means. and a response detecting means, a line switching means, and an emergency signal sending means, and when an abnormality occurs, the automatic dialing means activates the automatic dialing means and calls the remote person through the first telephone line. When the response detecting means recognizes the response of the monitoring station as N, the emergency signal sending means is activated to send out an emergency signal, and the busy detecting means calls the monitoring station. If it is determined that the telephone line is busy, the ffa line switching means is activated to switch to the second telephone line, and the automatic redial control means is activated to automatically dial again, and the monitoring station then repeats the call in the same manner. In the case of inside, telephone lines will be cut off one by one,
An emergency call device characterized by being configured to redial.