JPH02230498A - Guard information transmission equipment - Google Patents

Abstract

PURPOSE:To threaten an invader and to inform the occurrence of an abnormal state to a watchman on patrol by providing a no voltage detecting means a threat alarm output means, and outputting a threat alarm signal when a reception voltage from the outside on a communication line disappears. CONSTITUTION:A disconnection detecting part 3 consists of a voltage detector 31, two D flip-flops 32 and 33 connected in series, a clock generator 34, and an AND gate 35 which inputs the inverted Q output of the D flip-flops 32 and 33, and always monitors a voltage 36 supplied from the external station of a line L2 on the communication line 5, and is operated when no voltage occurs, and sets a signal 38 at a high level. A threat alarm signal output part 4 consists of a D flip-flop 41, a reset button switch 42, and a relay 43, and outputs the threat alarm signal 44 by operating the relay 43 when the signal 38 is set at the high level. Thereby, it is possible to quickly inform the occurrence of the abnormal state of the communication line 5 to the watchman on patrol as guard information.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a security information transmitting device, particularly for intrusion, fire,
The present invention relates to a security information transmitting device that automatically reports the occurrence of an abnormal situation such as a gas leak to a receiving device of a monitoring center via a communication line.

[Conventional technology]

Conventionally, this type of security information transmitting device has been monitored by a monitoring center to determine whether it is operating normally during security by sending out a message at a fixed time interval.

[Problem that the invention seeks to solve]

With the conventional security information transmitting device described above, if a criminal intrudes during security and takes action to disconnect the communication line, the status of the security destination is completely unknown until the monitoring center recognizes that there is an abnormality in the scheduled transmission. However, there is a particular drawback that if the line is disconnected while the scheduled call is being canceled, the security information transmitting device will operate and the B monitoring center will not be able to detect it.

(Means for Awakening and Determining Problems) The security information transmitting device of the present invention includes a non-electric sweat detection means for detecting the disappearance of the received voltage being inputted from the outside through a communication line, and The apparatus has a threatening alarm output means that activates when a no-voltage state is detected.

[Effect]

By constantly monitoring the voltage supplied from a station outside the communication line and detecting the disappearance of this voltage, this system can prevent abnormal situations from occurring on the communication line and provide security information. You can notify the patrolling guard.

〔Example〕

Next, embodiments of the present invention will be described with reference to the drawings.

FIG. 1 shows security information transmission according to the present invention. FIG. 2 is a block diagram showing the configuration of one embodiment of the device.

This embodiment is composed of a central processing section 1, an information transmission section 2, a disconnection detection section 3, and a threat alarm signal output section 4, and a communication line 5.
is connected to a monitoring center (not shown) via. A plurality of sensors 11 are installed at required locations and connected to the central processing unit 1 to detect intrusion, fire, and gas leakage, and each of these sensors 11 inputs and encodes signals that detect abnormal situations. Then, the corresponding police +li^ information will be output.

It should be noted that the central processing unit 1 is enabled when the security start switch 6 is on, and is disabled when it is in A-f. The communication line 5 is two-tree lines L1 and 1-2.
4r (not shown), the information sending section 2 sends the security information received from the central processing section 1 to the monitoring center through the line 1-1. The disconnection detection section 3 includes a voltage detector 31, two D flip-flops 32 and 33 connected in series, a clock generator 34, and a D flip-flop 32 and J.
: and goo 1 to 35 which manually override the 0 output of 33, constantly monitors the voltage 36 (usually A8Vdc) supplied from the external station of the line L2 of the communication line 5, and operates when there is no voltage. Raise Ai No. 5 38 to a high level.

The intimidation alarm signal output section 4 consists of a D flip-flop 41, a reset I button switch 42, a relay 43, etc. When the output signal 38 of the disconnection detection section 3 reaches a high level, the relay 43 operates, and the intimidation alarm signal is activated. Output wing 4/I,
The rehit button switch 42 is a switch for restoring the operation f+ of the relay 43.Next, we will explain the operation of this embodiment, especially when the communication line 55 is cut off by an intruder. This will be explained with reference to FIG.

The communication line 5 is initially in a normal state.

The voltage detector 31 detects the voltage 36 on the line L2 and outputs it to the D terminal of the D flip-flop 32.

Therefore, the O output of the D flip-flop 32 is held at a low level, and the D flip-flop 33 receives this O output at its D terminal, and its O output is held at a high level. Since the AND gate 35 inputs the low level ○ output of the D flip-flop 32, its output signal 3
8 is at a low level.

The D input of the D flip-flop 41 is held at a high level, so its ○ output continues to be at a high level, and the - end of the coil of the relay 43 is connected to a high potential, so it is not energized and the contact is closed. is listening. Now the time is 1o
If the communication line 5 is disconnected by an intruder, the input voltage 36 of the voltage detector 31 disappears, so the D input of the D flip-flop 32 also becomes zero, and at the next rising time t1 of the clock 37 after time to. The signal OUT is inverted to high level, and the output signal 38 of the AND gate 35 rises.

In response to the rise of this signal 38, the D flip-flop/1
The Q output of 1 is reversed to the {II level, the coil of the relay 43 is energized, the contact is closed, and the intimidation alarm signal 44 is output, operating the externally connected emergency bell and revolving light to prevent intrusion. Intimidate. Then, the next click signal 37
At rising time t2, the 0 output of the D flip-flop 33 is inverted to low level, and the output signal 38 of the AND gate 35 is
is at a low level, but there is no change in the Φ output of the D flip-flop 41. Through the above operations, the security guard on patrol can quickly learn of the disconnection of the communication line 5, and by pressing the reset button switch 42 at time t3, the relays 1-3 are restored with the reset signal 45. .

〔Effect of the invention〕

As explained above, the present invention provides a non-voltage detection means and a threatening alarm output means, and outputs a threatening alarm signal when the received voltage from the outside of the communication line disappears. It provides the maximum intimidation effect to intruders in the event of a break-in, notifies security guards patrolling each security monitoring station that the communication line is disconnected, allows them to quickly respond to abnormal situations, and improves security planning. This has the effect of significantly improving the quality of first-celebration services.

[Brief explanation of the drawing]

FIG.
FIG. 2 is a block diagram showing the depiction of the embodiment, and FIG. 2 is a timing chart 1'7-1 showing the operation of the embodiment. 1...Central processing unit, 2...Information sending unit, 3.
...Disconnection detection section, 4.Intimidation alarm signal output section, 5.Communication line, 6.Security room9. f] Release key switch, 31...
Voltage detector, 32, 33. /I-1...D flip-flop, 34
...Clock generator, 35...And game-1~,3
6...Voltage, 38...Signal, 37...
Clock, 42... Button switch to reset 1, 43... Relay 44... Intimidation alarm signal, 45... Reset 1 ~ signal.

Claims (1)

[Claims] In a security information transmitting device that automatically reports the occurrence of an abnormal situation to a monitoring center via a communication line, a no-voltage detection device detects that a received voltage input from the outside via the communication line has disappeared. What is claimed is: 1. A security information transmitting device comprising: means for outputting a threatening alarm that operates when a no-voltage state of a communication line is detected by the no-voltage detecting means.