JPH0148599B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a detector with a status display function, and more specifically, a method for displaying the status on the detector side, for example, when displaying an abnormal alarm, the status of the alarm is sequentially displayed in real time, and a system that displays the alarm status after the alarm is issued. This invention relates to a detector with a status display function that can display the alarm in two ways: displaying the alarm and temporarily holding the alarm until a reset operation is performed.

Generally, a detector is a device that detects a change in state and converts that change into an input signal useful to an information gathering system. An example of a system using such a detector is a security system, but in conventional security systems, the detector issues an alarm (hereinafter referred to as an alarm), and the alarm is displayed only on the control device side. In this case, since a large number of detectors are incorporated and displayed on one display section on the control device side, it is difficult to easily confirm which detector has issued an alarm. Therefore, as an improvement measure to confirm which detector has issued the alarm,
For example, a method of displaying an alarm on each detector side has been considered. However, when performing such an alarm display, the situation and operation of the alarm display during security and when the security is released are different, so it is necessary to select a suitable display method for each. There was a problem that it could not be obtained using only one display means.

In other words, when the alarm is displayed during security, since no one is in the security target area when the alarm is triggered, the alarm is displayed at the same time as the alarm is triggered, and the above-mentioned alarm is temporarily held until the location of the alarm is confirmed, and then reset after confirmation. It is desirable to have an alarm display method that allows for On the other hand, when displaying an alarm during an inspection when security is released, if a person is present in the area to be guarded at the time of the alarm and repeatedly checks the detection range and sensitivity of the detector, the alarm may be retained. If there is, it is necessary to perform a reset operation each time, which has disadvantages such as complicated operation and time loss.

The present invention has been made in order to solve the above-mentioned problems, and includes a real-time method in which the detection status is sequentially displayed in real time when displaying the status on the detector side, and a status display that is activated by the detection signal when the status is detected. It is an object of the present invention to provide a detector with a status display function, which has two methods, a temporary holding method and a temporary holding method, and is configured to be switchable between the two methods, thereby making it possible to easily confirm the detected detector.

An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is a block configuration diagram of a detector in a security system showing an embodiment of the present invention. In the figure, 1 is a detection circuit provided in a detector (not shown) and detects an abnormal state in security; 2 3 is a first signal processing circuit that performs necessary signal processing such as removing external noise other than the purpose of detection from the output signal 1a from the detection circuit 1; 3 is an alarm output circuit; A pulse corresponding to the output signal from 2 is output as an alarm signal 3a, and this alarm signal 3
A is configured to activate a relay (not shown) of the relay circuit 4 and send out an alarm output AO. Reference numeral 5 denotes a second signal processing circuit which receives a control input CI from a control device (not shown) and processes and extracts only a signal for setting an alarm display method from the control input CI in order to select an alarm display method. It is composed of A specific example is control input CI
It is possible to implement a configuration in which a setting signal for an alarm display method is carried on a power supply line or the like, and in this case, the configuration is such that the setting signal is extracted by signal processing. Reference numeral 6 is provided with a changeover switch (not shown), and the setting of the switch selects whether "the alarm display method is set on the detector side" or "the alarm display method is set using the control input from the control device side." A switch circuit 7 is a gate circuit that switches according to the switching operation, and determines whether or not to hold the alarm based on the output signal of the switch circuit 6. If the alarm is not held temporarily, the output signal 3a of the alarm output circuit 3 is switched. The output signal 7a of the gate circuit 7 is directly input to the alarm display circuit 9. On the other hand, when the alarm is temporarily held, the output signal 3 of the alarm output circuit 3 is input directly to the alarm display circuit 9.
The signal a is inputted to the alarm holding circuit 8 as the output signal 7b of the gate circuit 7, and after holding the alarm, it is inputted to the above-mentioned alarm display circuit 9.
The alarm holding circuit 8 is reset by the fall of the output 6a of the switch circuit 6.

In addition, the above-mentioned alarm display circuit 9 is connected to the above-mentioned gate circuit 7.
It is connected to a display means (not shown) such as a light emitting diode, a buzzer, a sound, etc. which performs a display operation based on the display output of the output signal 7a of the alarm holding circuit 8 or the output signal 8a of the alarm holding circuit 8.

Based on the above configuration, the operation of an embodiment of the present invention will be explained with reference to FIG.

FIG. 2 is a timing chart showing the operation of the main part of FIG. 1. In the figure, a indicates the output 1a when the detection circuit 1 detects an abnormality. b is the alarm signal 3a output from the alarm output circuit 3, and c is the output signal 6 of the switch circuit 6 when the alarm is not temporarily held.
a, d are the output signals 7a of the gate circuit 7 when the alarm is not temporarily held, e are the output signals 6a of the switch circuit 6 when the alarm is temporarily held, and f are the output signals 6a of the alarm holding circuit 8 when the alarm is temporarily held. Output signal 8
6a, g are output signals of the switch circuit 6 when the alarm display method is switched from the real-time method to the temporary hold method, and h are the display outputs of the alarm display circuit 9 before and after the time of switching the alarm display method.

First, when the detection circuit 1 detects an abnormality, it outputs a detection signal 1a as shown in FIG. After processing, the alarm output circuit 3 outputs the alarm signal 3a to a predetermined threshold level as shown in FIG. 2b.
It outputs a pulse corresponding to a voltage width greater than TL, which activates the relay in the relay circuit 4 to issue an alarm output AO.

Now, control input from the control device (not shown) side
When setting the alarm display method with CI, when the changeover switch 6 inputs the output of the second signal processing circuit 5, it outputs the output 6a as shown in FIG. Output 7a
is sent to the alarm display circuit 9.

Next, when setting the alarm display method on the detector side, disconnect the output of the second signal processing circuit 5 using the changeover switch 6, and first, when not holding the alarm temporarily, as shown in
As a result, the gate circuit 7 outputs an output signal 7a having the same pulse as the alarm output 3a in real time, as shown in FIG. 2d, and this signal 7a is further output as a display output. It is sent to the alarm display circuit 9 to be displayed. Further, when setting the alarm display method on the detector side as described above and when temporarily holding the alarm, the gate circuit 7 outputs the output signal 3a from the alarm output circuit 3.
is input and sent to the alarm holding circuit 8 as the output signal 7b. Further, a high level output signal 6a is sent from the switch circuit 6 to the alarm holding circuit 8.

However, with this output signal, as shown in Figure 2e,
After being held, a fall signal is sent for a certain width _T1 , and then output so that a reset R operation is performed. As a result, the alarm holding circuit 8 is set to hold by the output signal 7b as shown in FIG. As a result, a display is output to the alarm display circuit 9, and an alarm is displayed by a display means such as a light emitting diode, a buzzer, or a sound. Therefore, for example, by operating the switch circuit 6 on the control device side to switch the alarm display method from the real-time method to the temporary holding method, as shown in FIG. In the newly selected temporary holding method, the output 7b of the gate circuit 7 is inputted to the alarm holding circuit 8, while the output 7b of the gate circuit 7 is inputted to the alarm display circuit 9.
Further, it operates to input the output 8a of the alarm holding circuit 8 to the alarm display circuit 9. As a result, as shown in FIG. 2h, the alarm display circuit 9 outputs the real-time output signal A when the output 6a of the switch circuit 6 is at the low level, and temporarily holds the output signal A when the output 6a is at the high level. The output signal B according to each method is displayed and output, and an alarm is displayed on the display means. In this way, you can easily check which detector has triggered an alarm, and you can prepare display units for the number of detectors on the control device side, or send the address from the detector that triggered the alarm to the control device side. It is not necessary to have a complicated configuration for receiving and processing signals, and a simple configuration can be obtained.

As described above, according to one embodiment of the present invention, there is a method in which the status of the alarm is displayed sequentially in real time on the detector side, and a method in which the alarm is displayed when it is triggered and is temporarily held until a reset operation is performed. The configuration allows two types of alarm display to be switched and displayed by operating a changeover switch on the detector side and control input from the control device side, making it easy to display alarms from multiple detectors. It can be confirmed at low cost, and as a result, the alarm display during security is easy to display when the alarm is triggered, temporarily hold the alarm until the location of the alarm is confirmed, reset after confirmation, and check when the security is released. Since alarms can be displayed sequentially and in real time, it is possible to easily check the detection range and sensitivity of the detector while a person is in the security target area at the time of the alarm, and to efficiently perform maintenance inspections of the detector, etc. It has great practical effects.

In the above embodiment, a security anomaly detector has been described, but the field of application of the detector having two types of status display functions, a real-time type and a temporary holding type, is not limited to this.

As explained above, according to the present invention, the detector is configured to have two detection status display functions, a real-time method and a temporary hold method. A great practical effect can be obtained in that maintenance and inspection work on and related equipment can be carried out efficiently, and costs can be significantly reduced.

[Brief explanation of drawings]

FIG. 1 is a block diagram of a detector in a security system showing one embodiment of the present invention, and FIG.
This is a timing chart showing the operation of the main parts of the diagram. 1...detection circuit, 2...first signal processing circuit,
3... Alarm output circuit, 4... Relay circuit, 5...
Second signal processing circuit, 6... Switch circuit equipped with a changeover switch, 7... Gate circuit, 8...
...Alarm holding circuit, 9...Alarm display circuit.

Claims (1)

[Scope of Claims] 1. A switch circuit having a changeover switch on the detector side; a gate circuit that switches the path of the detection signal based on input from the switch circuit; and a detection signal held by input from the gate circuit and the switch circuit. a holding circuit that sets and resets the gate circuit, a display circuit that displays the status of the input from the gate circuit or the holding circuit, and a signal processing circuit that processes the control input from the control device, and displays the status on the detector side. A detector with a status display function, characterized in that the detector is configured to be able to switch between two status display methods, a real-time display method and a temporary holding method, by operating the changeover switch and controlling input from the control device. .