JPS6289200A - Group monitoring system utilizing catv circuit - 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] [Background and Objectives of the Invention] The present invention
This is a group monitoring system that uses a cable (antenna television) line, and uses a CATV line that has a security monitoring function that is particularly suitable for preventing alarms from operating when a resident returns from outside and opens the door. This is related to a group monitoring system.

With a security device that uses an intrusion sensor that turns on and off when the door is opened and closed, when you leave the house and go out, you turn on the security device and then go out. Since the security device is activated when the door is opened or closed, an alarm will be activated even if the door is opened on the way home. For this reason, in the past, a key switch was installed outside the building to set and reset the security device to prevent unnecessary alarm operations.

However, in this case, there is an increase in costs due to the installation work of the key switch, and only the person with the key can enter and exit without sounding the alarm, and if the key is lost, the alarm will not sound. There were some inconveniences, such as not being able to go in and out without moving.

The present invention has been made in view of the above, and its purpose is to provide a crime prevention system that can prevent an alarm from operating when a resident returns from outside and opens the door. IAI! The purpose of the present invention is to provide a group monitoring system using a CATV line equipped with the following functions.

[Summary of the Invention] The present invention is characterized by a group monitoring system consisting of a plurality of residences each connected via a tap-off using a CATV line and connected to a group monitoring alarm means via a duplexer. , each residence includes a set switch that is operated when going out or returning home, a security switch, a first delay circuit that disables the operation of the crime prevention switch for a predetermined period of time after the set switch is turned on, and the set switch. Alarm holding for holding the security switch when the security switch is operated after the predetermined time after the switch is turned on, operating the alarm output circuit via the second delay circuit, and sending a signal to the group monitoring alarm means. The present invention has a configuration in which crime prevention monitoring means consisting of means are provided.

[Example] The present invention will be described in detail below using the example shown in FIGS. 1 and 2.

FIG. 1 is a system diagram showing an embodiment of a group monitoring system using a CATV line according to the present invention.

In FIG. 1, 1 to 4 are the CATV tap-off units of residences, and the case of four residences is shown. 5 is CA
This is a tap-off installed on the TV line.

Each residence 1 to 4 has a duplexer 6 connected to a tap-off 5.
One of them is connected to the group monitoring alarm panel 7, and the group monitoring alarm panel 7 is equipped with various sensors 8.
is connected. The other end of the duplexer 6 is connected to a television receiver.

FIG. 2 is a block diagram showing one embodiment of the security circuit provided in each of the residences 1 to 4 in FIG. 1. In Figure 2,
10 is a set switch, 11 is a first delay circuit, 12 is a security setting holding circuit, and 13 is a security switch, which is turned on and off by opening and closing the door. First, when the set switch 10 is turned on (contact a side is on), the delay circuit 11 set to an arbitrary delay time starts operating, and since the security setting holding circuit 12 is not triggered within the delay time, the security switch 13 It has no effect even if it is turned on or off. Therefore, when the resident goes out, he or she closes the door and closes (or closes) the security switch 13 and sets the set switch 1.
After inputting 0, the user goes out within the delay time of the delay circuit 11.

In this way, when the door is opened by an intruder after the above-mentioned delay time, the security switch 13 is closed, and at this time, the security setting holding circuit 12 is triggered, so the detection holding circuit 14 is activated to detect an abnormality. The signal passes through a second delay circuit 15 and drives an alarm holding circuit 16. The output of the alarm holding circuit 16 is input to the alarm output circuit 17, which issues an alarm using an LED or a buzzer, etc., and is also input to the group monitoring alarm panel 7 of FIG. The alarm type is displayed.

On the other hand, when the resident returns home, the security switch 13 is closed by opening the door, and the detection and holding circuit 14 is activated.
Since there is a certain delay time due to the delay circuit 15 before the alarm holding circuit 16 is driven, the set switch 10 is
If it is turned off, the output of the alarm holding circuit 16 will not be input to the alarm output circuit 17 or the group monitoring alarm panel 7.

According to the embodiment of the present invention described above, (1) When a resident goes out, an alarm is not issued by opening or closing the door, and a signal is input to the group monitoring alarm 17 of other residences in the group. You can prevent it from happening,
You can go out freely.

(21) When returning home, the set switch 10 can be turned off before issuing the alarm, and there is no need to provide a key switch outside the building as in the past.

(3) It is possible to eliminate inconveniences caused by loss of keys, etc.

There is an advantage.

In addition, in order to notify that the delay circuit 12.15 is in operation, the delay circuit 12.15 makes an operation sound (for example,
A device that emits a melody, music box, etc.) may be added.

[Effects of the Invention] As explained above, according to the present invention, group monitoring using a CATV line is provided with a crime prevention monitoring function that can prevent an alarm from operating when a resident goes out or returns home from outside. This has the effect of providing a system.

[Brief explanation of drawings]

FIG. 1 is a system diagram showing an embodiment of a group monitoring system using a CATV line according to the present invention, and FIG. 2 is a block diagram showing an embodiment of a security circuit installed in each of the residences shown in FIG. 1-4...Residence. 5...Tap off. 6... splitter. 7...Group monitoring alarm board. 8...Sensor. 9...TV receiver. 10...Set switch. 11.15...Delay circuit. 12... Security setting holding circuit. 13... Security switch. 14...Detection and holding circuit. 16...Alarm holding circuit. 17...Alarm output circuit.

Claims (1)

[Claims] (1) A group monitoring system consisting of a plurality of residences each connected via a tap-off using a CATV line and connected to a group monitoring alarm means via a duplexer, each residence having a a set switch that is operated at night or when returning home; a security switch; a first delay circuit that disables the operation of the security switch for a predetermined period of time after the set switch is turned on; and a crime prevention monitoring means comprising an alarm holding means for holding the crime prevention switch when it is activated to operate the alarm output circuit via a second delay circuit and sending a signal to the group monitoring alarm means. A group monitoring system using a CATV line, which is characterized by: