JPH0229499Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an improvement of a false alarm prevention circuit in an emergency notification device.

If a conventional emergency notification device is explained with reference to FIGS. 1 and 2, a control unit 10 includes various sensors 1.
2 is connected, and if an abnormality occurs, the emergency bell 14 will ring to notify you, and the automatic dialing device (not shown) of the notification device 16 will transmit the security guarantee contracted in advance through the switch 17 via the switch 15. The system is set up to automatically notify the company via the subscriber telephone line. Reference numeral 18 designates the telephone. When used as a regular telephone, it can be used by flipping the converter 17 toward the telephone, and when connected to an emergency reporting device, it is switched to the automatic reporting side. The sensors 12 include a fire sensor 121 that detects the occurrence of a fire by detecting heat, smoke, etc., a gas sensor 122 that detects gas leaks, and a security sensor 123 that monitors the closed state of each door, window, etc. that serves as an entrance. It is configured. As shown in detail in FIG. 2, this security sensor 123 is attached to each door or window, such as an entrance or back door, and is connected to a plurality of security monitoring switches that turn on and off as each door opens and closes. S ₁ , S ₂ , S ₃ ,…
... are connected in series.

Therefore, when you go out, switch the switch 15 to the automatic notification side and lock the doors and windows of each door, and each switch S ₁ , S ^{2 .} . . becomes a closed circuit as shown in the figure and is in a normal state. However, if you try to go out with the last exit door open, the corresponding switch _S1 will open and go into an abnormal state, and the security insurance company will be automatically notified. In order to prevent such false alarms, conventionally, a keyed switch is installed in parallel with the last exit door switch _S1 , which is turned off when locked and turned on when unlocked, that is, a false alarm prevention switch SW. It is connected and installed outdoors.

Therefore, when you go out, do not use the false alarm prevention switch until you go outside and insert the key into the lock K to lock it.
When SW is in the on state, it forms a bypass circuit for switch _S1 , and the security monitoring circuit is maintained normally. Also, when the lock is locked, the switch SW will open as shown in the diagram.
is opened, the bypass circuit is released, and the security sensor 123 enters the set state. Furthermore, by unlocking the door when returning home, the false alarm prevention switch SW is turned on, and a bypass circuit is formed to prevent false alarms from being generated even if the door is opened and switch _S1 is released.

In such conventional devices, when setting up security while at home, such as when going to bed, the control section is provided with a monitoring cancellation function, and an operation section is also provided to instruct the monitoring system to be canceled for this monitoring cancellation function. Once the monitoring system has been canceled by operating the above-mentioned control panel, the outdoor false alarm prevention switch SW can be turned on.
It is necessary to turn it off, return to the room, operate the operation section again, and set the monitoring system again, which requires a very troublesome and troublesome operation.

In order to solve this problem, even if the security sensor is activated, the emergency bell and automatic notification device are not activated immediately, but a temporary delay activation time is set, and the notification can be made by pressing the notification release button within this predetermined time. A method has been proposed to release the . However, although this method has better operability than the above-mentioned key operation and is cost-effective, it requires the notification release button to be installed both inside and outside the door, which poses a serious flaw in terms of safety. are doing. Furthermore, if the notification release button cannot be operated within the above-mentioned temporary delay activation time, there is a drawback that a false notification may be issued.

This invention solves these problems, and the first false alarm prevention switch SW is operated by conventional key operation.
To provide a false alarm prevention circuit in an emergency notification device, which is connected in series with a second false alarm prevention switch _S0 and installed inside the door, and which simplifies the security set-up when at home with an extremely simple configuration. It is an object.

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention shown in the drawings will be explained in detail below.

Figure 3 is a circuit diagram for preventing false alarms according to the present invention.
In this figure, the same parts as in the conventional figure 2 are indicated by the same reference numerals. Therefore, the difference from the conventional one is that the first false alarm prevention switch is turned on and off by operating a key on a lock K installed outside.
A second false alarm prevention switch _S0 , which is turned on and off by operating a push button PB, is connected in series to the SW, and this second switch _S0 is installed inside the door.

The first false alarm prevention switch SW is in the on state in the unlocked state as described above. If you want to go out now, first press the push button PB of the second switch _S0 installed in the door to turn it on, and the series circuit of these switches will become a closed loop and bypass the security monitoring switch _S1 . A loop is formed, and even if the door is opened and switch _S1 is released, the crime prevention monitoring circuit is maintained normally, so the emergency call device can go outside without giving a false alarm. After that, if the door is locked from the outside by key operation, the first switch SW is opened and the crime prevention monitoring circuit is set. Of course, when returning home, the switch SW can be closed by key operation to form a bypass loop and enter.

In addition, when setting the security sensor when you are at home, such as when you are sleeping, even if the first false alarm prevention switch SW installed outside is in the ON state, the second false alarm prevention switch SW installed inside the door is turned on _. By turning off the switch _S1 by pressing the button, the bypass loop of the security monitoring switch S1 is cut off, and the security monitoring circuit is set.

As described above, according to the present invention, in addition to the conventional first false alarm prevention switch SW installed outdoors and turned on and off by key operation, there is also a second false alarm prevention switch SW in series with this switch SW, which is turned on and off by manual operation. Since the false alarm prevention switch _S0 is connected and added inside the door, it has an extremely simple configuration and has an excellent practical effect in that it is possible to set up security at home with simple operations.

[Brief explanation of the drawing]

FIG. 1 is a block diagram for explaining an emergency notification device, FIG. 2 is a diagram showing a conventional crime prevention monitoring circuit, and FIG. 3 is a crime prevention monitoring circuit diagram according to the present invention. S ₁ , S ₂ , S ₃ ... Security monitoring switch, SW ... First false alarm prevention switch, S ₀ ... Second false alarm prevention switch, K ... Lock, PB ... Push button.

Claims (1)

[Scope of claim for utility model registration] A crime prevention monitoring switch that is turned on when the door is closed and turned off when the door is opened; and a first security monitoring switch that is placed outside the door and that is turned on when the door is unlocked and turned off when it is locked. a false alarm prevention switch SW; and a second false alarm prevention switch _S0 disposed inside the door and turned on and off by manual operation, the first false alarm prevention switch SW and the second false alarm prevention switch A false alarm prevention circuit characterized in that a series circuit of switch _S0 is connected in parallel to the security monitoring switch.