JPH0241754Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an emergency notification device that notifies a subscriber of a change in the state of a sensor via, for example, a telephone line.

FIG. 1 is a block diagram schematically showing such an emergency notification device. In the figure, 1 ₁ , 1 ₂ ,..., 1
n is a sensor placed in multiple locations (however,
One place is fine. ), 2 ₁ , 2 ₂ , ..., 2n are input circuits provided corresponding to each sensor and perform signal amplification, 3 is a gate circuit, 4 is a notification circuit, 5 is an output terminal, SW is a changeover switch, A indicates its standby position, and B indicates its reporting position. For example, when an ordinary company contracts with a security company and requests security during leaving hours, the operator at the client company should move the changeover switch SW to position A when arriving at work and position B when leaving. , the security side is informed of the security situation of the client company, that is, the security destination. That is, the notification circuit 4 sends out a predetermined "work" signal at the A position of the switch SW,
A predetermined "leaving" signal is sent at position B of the switch SW. A security company releases security when it receives a signal to come to work, and starts security when it receives a signal to leave work. Further, after sending out the "Coming to work" signal, the entire device enters a standby state in which it does not report changes in the sensor state, and after sending out the "Leaving work" signal, it enters a reporting state in which it reports changes in the sensor state.

However, for example, sensors 1 ₁ to 1n are all door sensors (sensors that detect the opening and closing of the door).
or a part of the door sensor is included, when the operator leaves the office and flips the switch SW to position B, the door with the door sensor is
If you forget to close the door at any time, the emergency notification device immediately enters the notification state and sends out a signal indicating that the door is open, confusing security personnel. Therefore, conventional methods have been used to notify the operator of such operator errors using a buzzer or the like, or to immediately send out an abnormality signal to notify security. However, the former method is ineffective if the operator ignores the buzzer sound, and both methods
When the operator realizes his mistake and tries to perform the operation again, it is unreasonable that the change in sensor status (abnormal state) has already been reported, so the latter method reduces the amount of traffic (reports). There are disadvantages such as increase.

The purpose of the present invention is to prevent normal security from being disturbed due to the operator's error as described above, and to accurately notify the security, that is, the monitoring side, of the status of the security destination with a small amount of traffic.

This invention is designed to prevent errors in the operation described above.
The present invention is characterized in that it immediately stops reporting changes in the state of the sensor, and only sends out a "set mistake" signal indicating that a mistake has occurred after a certain period of time that is sufficient to restart the operation.

The present invention provides an emergency notification device that reports abnormality detection signals from sensors 1 ₁ to _1n via a communication circuit.
A gate means 3' to which an abnormality detection signal is supplied from the sensors 1 1 to 1n, an operation switch SW that switches between a standby state and a notification state, and an operation switch SW that is switched to the notification state, and an abnormality detection signal from the sensors 1 ₁ to 1n. The first discrimination means AND1, OR1, 7 which generate the first signal when the first signal is not obtained, and the operation switch SW are switched to the reporting state, and an abnormality detection signal is obtained from the sensors ₁₁ to 1n. A second discriminator that sometimes generates a second signal AND
2, OR1, second determining means AND2, timer means 10, 11 that are activated by the second signal from OR1 and measure a predetermined time, and timer means 1.
It has an alarm device 9 that warns that an abnormality detection signal is obtained from the sensors 1 ₁ to 1n during the measurement of 0 and 11, and when the operation switch SW is switched to the standby state, the gate means 3 ' is blocked, and the notification circuit 4 reports the standby state.
When the operation switch SW is switched to the notification state and no abnormality detection signal is obtained from the sensors 1 ₁ to 1n, the first determination means AND1, OR1,
Based on the first signal from 7, gating means 3'
is blocked, the reporting state is reported by the reporting circuit 4, the operation switch SW is switched to the reporting state, and an abnormality detection signal is obtained from the sensors ₁₁ to 1n, the second determination is made. means AND
2. Based on the second signal from OR1, the timer means 10 and 11 are activated, and an alarm is issued from the alarm device 9 while the timer means 10 and 11 are measuring, and the predetermined time of the timer means 10 and 11 is After measuring, the gate means 3' is opened based on the outputs of the timer means 10 and 11, and the sensors 1 ₁ to 1
The abnormality detection signal from n is made available for reporting by the reporting circuit 4, and the reporting circuit 4 also reports a set error.

FIG. 2 is a block diagram showing one embodiment of the present invention. In the figure, parts corresponding to those in FIG. 1 are designated by the same or similar symbols. In this example, a gate circuit 3' corresponding to the gate circuit 3 in FIG.
It is housed in the notification circuit 4. In the figure, 6A
6B is the “leaving work” input circuit,
OR1, OR2 are OR gates, AND1, AND
2, AND3 is an AND gate, 7, 14 is an inverter, 8, 12, 13 is a flip-flop,
9 is an alarm (buzzer), 10 is a clock oscillator,
11 indicates an n-ary counter.

First, we will explain the case where the operator moves the changeover switch SW to the standby position A when going to work.When the switch SW is switched to the A position, the signal is sent to the notification circuit 4 via the "Coming to work" input circuit 6A.
The signal is applied to the input terminal 6A', is converted into a binary-coded "work" signal in the notification circuit 4, and is transmitted from the output terminal 5. In the figure, it is simply indicated by a dotted line. Further, the output signal of the "return to work" input circuit 6A is applied to the set terminal S of the flip-flop 8, and the output signal from its output terminal Q closes the gate circuit 3'. Therefore, no signals from the sensors 1 ₁ to 1n are sent to the monitoring side, and the monitoring side is in a state where security is released.

Next, a case will be described in which the operator moves the changeover switch SW to reporting position B when leaving the office. When the switch SW is switched to B position, each sensor 1 ₁
If ~1n are all in a normal state (in the case of a door sensor, all doors are closed) and do not emit any signal, the output of OR gate OR1 is "0", but it is inverted by inverter 7. The signal becomes "1" and is applied to one input terminal of the AND gate AND1. Since the output of the "leaving work" input circuit 6B is applied to the other input terminal of the AND gate AND1, the AND gate AND1 produces an output that is applied to the "leaving work" input terminal 6B' of the notification circuit 4. Therefore, the notification circuit 4 converts this into a "leave work" signal and sends it from the output terminal 5, as shown by the dotted line.
At the same time, the output of the AND gate AND1 is sent to the flip-flop 8 via the OR gate OR2.
The signal is input to the reset terminal R of the gate circuit 3', and the output of the output terminal Q thereof is set to "0" to unblock the gate circuit 3'.
Therefore, changes in the status of each sensor 1 ₁ to 1n are reported to the monitoring side. Also, and
The output of gate AND1 is flip-flop 1
2 is applied to the set terminal S, and the counter 11 is reset by the output from the output terminal Q.
It is applied to the reset terminal R of the flip-flop 13, and the output from its output terminal Q is set to "0". I will talk more about these later.

However, when I switched the switch SW to B,
If one of the sensors 1 ₁ to 1n is in an abnormal state and generates a signal (in the case of a door sensor, even one door is open), the OR gate OR1 produces an output of "1", but the inverter 7 outputs "1". 0'', and the output of the AND gate AND1 becomes 0, so the ``leave work'' signal as described above is not sent. At the same time, flip-flop 8 is also not reset via OR gate OR2, so gate circuit 3' remains blocked. Therefore, reporting of changes in the state of the sensor to the monitoring side is stopped, and the device remains in the same state as the standby state, thereby preventing false alarms due to mistakes. This point is the first feature of the present invention.

On the other hand, the output "1" of the OR gate OR1 is connected to the AND gate together with the output of the "Leave" input circuit 6B.
Since it is applied to AND2, the AND gate AND
2 produces an output "1". and gate AND
The output of 2 resets the flip-flop 12, and the output ``0'' at its output terminal Q resets the flip-flop 12.
Release the reset and start counting. Since the counter 11 generates an output at the desired count number n, the output is still "0" at this time, and the output from the output terminal Q of the flip-flop 13 is "0", so the inverter 14 The output remains "1" and is applied to the AND gate AND3. Therefore, the AND gate AND3 produces an output "1" and sounds the buzzer 9. This allows the operator to quickly realize the mistake and switch the switch again.
When the switch is returned to position A, the "return to work" signal is sent as described above, and the gate circuit 3' is closed.
The operator returns the abnormal sensor to the normal state (door/
In the case of a sensor, if the open door is closed) and the switch SW is moved to position B, the "leave" signal is sent out as described above, the gate circuit 3' is unblocked, and the normal reporting state is established.

However, if the operator ignores the warning from the buzzer or does not notice it, the notification suspension state continues as described above, and the counter 11 continues counting. When the count of the counter 11 reaches n, the counter 11 produces an output and sets the flip-flop 13, which has been in the reset state until then, and the output from its output terminal Q is sent to the "set miss" input terminal 13' of the notification circuit 4. is applied to The notification circuit 4 converts this into a predetermined "set miss" signal and sends it to the monitoring side from the output terminal 5 as shown by the dotted line. In this case as well, flip-flop 13
Since the output from the output terminal Q of the flip-flop 8 is supplied to the flip-flop 8 through the OR gate OR2, the flip-flop 8 is reset, thereby opening the gate circuit 3'. Then,
The monitoring side can accurately grasp the current situation of the monitored target and can take necessary security measures. This is the second feature of the present invention.

In the above description, an emergency notification device between a normal company and a security company has been explained as an example, but the present invention is not limited to this, and even in the specific configuration, it is not limited to the embodiment but may be registered as a utility model. Various modifications and changes can be made within the gist of the invention described in the claims.

As explained above, according to the present invention, if the operator makes a mistake, reporting is canceled, so the operator's mistake is compensated for, and furthermore, if the operator does not perform a normal operation within a certain period of time, a "set mistake" is detected. Since a signal is sent out, the person being notified has the advantage of being able to accurately grasp the situation of the monitored target with a small amount of notifications.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing an outline of an emergency notification device, and FIG. 2 is a block diagram showing an embodiment of the present invention. 1 ₁ ~ 1n...sensor, SW...changeover switch, A...standby position, B...report position, OR1,
7, AND1, OR2, 8... Means to stop reporting in case of mistake, OR1, 7, AND1, 12, 11,
13...Means for notifying mistakes after a certain period of time.

Claims (1)

[Scope of Claim for Utility Model Registration] An emergency notification device configured to notify an abnormality detection signal from a sensor via a communication circuit, comprising: a notification circuit, a gate means to which the abnormality detection signal from the sensor is supplied, and a standby state. and an operating switch that switches the notification state; a first determining means that generates a first signal when the operating switch is switched to the reporting state and no abnormality detection signal is obtained from the sensor; a second determining means that generates a second signal when the sensor is switched to a reporting state and an abnormality detection signal is obtained from the sensor; and a timer means that is activated when the timer is turned on and measures a predetermined time, and an alarm that warns that an abnormality detection signal is obtained from the sensor while the timer means is measuring, and the operation switch is in a standby state. When it is switched, the gate means is closed, the notification circuit notifies the standby state, the operation switch is switched to the notification state, and no abnormality detection signal is obtained from the sensor. Based on the first signal from the first determining means, the gate means is closed, the reporting state is reported by the reporting circuit, and the operating switch is switched to the reporting state, and , when an abnormality detection signal is obtained from the sensor, the timer means is activated based on a second signal from the second determination means, and
An alarm is issued from the alarm device while the timer means is measuring, and after the timer means has measured a predetermined time, the gate means is opened based on the output of the timer means, and an abnormality detection signal from the sensor is output. The emergency notification device is configured such that the notification circuit makes it possible to make a notification, and the notification circuit notifies a set error.