JP2777142B2 - Alarm reporting device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Industrial application field) The present invention is for reporting information output when an abnormality is detected from an alarm device such as a gas leak alarm device or a fire sensor. The present invention relates to an alarm notification device.

(Prior art) In recent years, fire alarms, gas leak alarms, and other alarms have been installed in buildings, and detection information from these alarms has been transmitted to a monitoring center via a telephone line. There has been proposed a monitoring device that remotely monitors an abnormal state such as a fire or a gas leak at a monitoring center.

In such a conventional monitoring apparatus, a fire alarm or a gas leak alarm installed in a building temporarily malfunctions due to, for example, smoking of cigarettes or spraying of a spray-type insecticide, thereby causing an erroneous notification. May have occurred.

For example, when smoke from tobacco flows into the detection unit of the fire detector, the fire detector determines that a fire has occurred and transmits a fire signal. However, when the smoke of the cigarette flows out of the detection unit of the fire detector, the fire detector or the fire detection operation is stopped and the original normal state is restored.

As described above, there are cases where alarms such as gas leak alarms and fire detectors temporarily perform detection operations due to causes other than gas leaks and fires. The monitoring device transmits information that the output signal of the alarm that detects a fire, etc. has changed from a normal signal to an abnormal detection signal, and also monitors information that the alarm detection signal has changed from an abnormal detection signal to a normal signal. It is transmitted to the center.

This allows the monitoring center to determine a temporary detection operation due to cigarette smoke or the like.

In another conventional monitoring device, only when an output signal of an alarm device such as a fire detector changes from a normal signal to an abnormality detection signal, this detection information is transmitted to a monitoring center via a telephone line. . At this time, if the alarm returns to the original normal state during the telephone line connection processing, the current normal signal is transmitted to the monitoring center together with information indicating that the alarm signal has changed from the normal signal to the abnormality detection signal. Like that. Thus, the monitoring center can determine that the normal state has been restored and the normal signal has been transmitted after the alarm device has temporarily performed the detecting operation.

In still another conventional example, the duration of the abnormality detection signal output from the alarm device is monitored, and the signal is transmitted to the monitoring center only when the abnormality detection signal is continuously output for a predetermined time or more. That is, a discriminating means for discriminating the occurrence of a temporary abnormal situation is provided between an alarm device such as a fire detector and the monitoring center. When it is determined that the operation is an operation, transmission of detection information based on such a temporary detection operation to the monitoring center is prohibited.

(Problems to be Solved by the Invention) However, in some of the above-described conventional alarm notification devices, the state where the alarm device is temporarily detecting and transmitting a normal signal to the state where an alarm detection signal is transmitted is described. When the alarm changes to the original state and when the alarm returns to the original state and changes from the abnormal detection signal transmission state to the normal signal transmission state, information on both state changes is transmitted via the telephone circuit. Thus, it is possible to determine the temporary operation of the alarm device, but it is not economical because two notifications are required.

Further, as described above, in the conventional example in which the discriminating means for discriminating the temporary detection operation of the alarm device is provided between the alarm device and the monitoring center, when the abnormality detection signal does not continue for a predetermined time or more by this discriminating device. Has determined that it is not an abnormal condition.It is conceivable that the duration of the abnormality detection signal may be less than a certain time in the initial stage of fire or gas leakage, and it is considered whether such an abnormal condition has occurred. Judgment should be made comprehensively at the monitoring center.

The present invention has been made in view of the above, and appropriately transmits information related to a detection operation of an alarm device to a monitoring center, and the monitoring center can appropriately determine occurrence of an abnormal state based on the information. It is an object of the present invention to provide an alarm reporting device.

[Configuration of the Invention] (Means for Solving the Problems) In order to achieve the above object, the present invention provides a state determination unit that determines a detection state in an alarm device and sends state information,
State change detection means for detecting that a change has occurred in the detection state of the alarm device and transmitting detection information, and starting with the detection information from the state change detection means and adding detection information to the state information; Transmission means for transmitting.

(Operation) In the present invention, the state determination means determines the detection state of the alarm device. The state change detecting means detects that the detection state of the alarm has changed. Then, for example, the transmission unit is activated by detection information indicating that the alarm has changed from the steady detection state to the abnormal detection state, and transmits the state information with the abnormality detection state added. Whether or not an abnormality has occurred can be appropriately determined based on the information on the change in the detection state and the state information.

(Example) Hereinafter, an example according to the present invention will be described in detail with reference to the drawings.

As shown in FIG. 1, an alarm device 3 is connected to a signal line 2 drawn from an alarm notification device 1. Examples of the alarm device 3 include a gas leak alarm device that detects a gas leak state and issues an alarm, a smoke sensor that detects smoke due to the occurrence of a fire, and a fire sensor such as a heat sensor that detects heat. It consists of an alarm device.

When detecting an abnormal state such as a gas leak or a fire, these alarms 3 transmit, for example, an L-level abnormality detection signal, and transmit an H-level normal signal in a normal monitoring state. Such an abnormality detection signal or a normal signal from the alarm device 3 is given to the alarm notification device 1.

The alarm notification device 1 includes a telephone line 13a, a switchboard 15, and a telephone line.
It is connected to the center device 17 via 13b.

The center device 17 determines the occurrence of an abnormal state such as a fire or a gas leak based on the abnormality detection information from the alarm device 3 obtained via the alarm notification device 1. Also the center device 17
Also determines, based on information transmitted from the alarm notification device 1, whether the alarm device 3 has temporarily detected and operated due to a cause other than a fire or gas leak.

 Next, the internal configuration of the alarm notification device 1 will be described.

The state detector 5 is connected to the alarm 3 via the signal line 2, and determines the detection state of the alarm 3 based on detection information from the alarm 3. The state detector 5 is a state determination unit.

The state change detection unit 7 is connected to the alarm 3 via the signal line 2, and determines a change in the detection state of the alarm 3 based on detection information from the alarm 3. Also, the state change detection unit 7
Denotes state change determining means.

The control unit 9 is connected to each of the state detection unit 5 and the state change detection unit 7, receives the state detection information from the state detection unit 5, and receives the information on the change in the detection state from the state change detection unit 7. input. Further, the control unit 9 has a built-in processing means such as a microcomputer, and upon receiving respective information from the state change detection unit 5 and the state change detection unit 7, processes the information.

The control unit 9 is connected to the transmission unit 11, and the control unit 9
When the device inputs the information on the change in the detection state from the state change detection unit 7, it drives the transmission unit 11 to instruct the connection of the telephone line. As a result, when the alarm notification device 1 and the center device 17 are connected via the telephone line, the transmission unit 11
The information on the change in the detection state described above is added to the state information and transmitted based on the information from.

Next, the contents of information transmitted from the transmission unit 11 will be described by way of example.

When the alarm 3 is in the normal detection state based on the state information from the state detection section 5, the control section 9 outputs data "0".
Is set, and data "1" is set when the alarm 3 detects an abnormality. When the detection state of the alarm device 3 changes based on the information from the state change detection section 7, the control section 9 adds data "2" to the above-mentioned value.

The transmission unit 11 transmits the information subjected to the arithmetic processing from the control unit 9. Therefore, the transmission unit 11 transmits data “0” when the alarm 3 is in a steady detection state and a notification is activated by another transmission factor. Here, the other transmission factors include a case where there are a plurality of alarm inputs, a case where an abnormal signal of another alarm device is detected, and a case where a notification is made periodically for an alarm signal check.

Also, when the alarm 3 detects an abnormality and the information indicating that the state has changed from the steady state to the abnormal state has been transmitted to the transmission unit 11 and the notification is activated by another transmission factor, Transmits data "1".

Further, when the alarm unit 3 recovers to the original steady state after the alarm unit 3 temporarily performs the detection operation, the transmission unit 11 starts the notification and transmits the data “2”.

Further, when the alarm device 3 detects an abnormality and the transmission of the abnormality detection signal is continued at present, the transmission section 11 activates the notification and transmits the data "3".

When the transmission of the data information as described above is completed, the control unit 9 sends a reset signal to the state change detection unit 7 to reset the operation of the state change detection unit 7.

 Next, the operation will be described.

The alarm 3 installed in the building monitors the occurrence of a fire or gas leak in the building. In a normal monitoring state, an H-level normal signal is transmitted via the signal line 2 to the state detector 5 and the state detector 5. The change is sent to the change detection unit 7.

Assuming that the alarm device 3 continuously performs detection operation due to a cause other than a fire or a gas leak in such a state, an L-level abnormality detection signal is transmitted from the alarm device 3 to the state detection section 5 and the state change detection section 7. You. When an L-level abnormality detection signal from the alarm 3 is input from the state detector 5, it determines that the alarm 3 has detected an abnormality and sends state information to the controller 9. When the state change detection unit 7 receives the L-level abnormality detection signal from the alarm unit 3, the state change detection unit 7 determines that the alarm unit 3 has changed from a steady detection state to an abnormal detection state. The information is sent to the control unit 9. The control unit 9 controls the alarm 3 based on the information from the state change detection unit 7.
When it is determined that the state has changed from the steady state to the abnormal state, the transmission unit 11 is driven to instruct a line connection with the telephone line 13a. The control unit 9 sets data "1" based on the status information from the status detection unit 5 indicating that the abnormality has been detected since the abnormal signal continues even when the transmission with the center is completed and the transmission is executed. At the same time, the fact that the alarm device 3 has changed from the steady detection state to the abnormal detection state based on the information from the state change detection unit 7 has been identified. Is added. Subsequently, the control unit 9 instructs the transmission unit 11 to transmit data "3" obtained by adding "2" relating to the change in the detection state to data "1" in the abnormal state. Thereby, the transmission unit 11 transmits the data “3” to the center device 17 via the telephone line 13a, the exchange 15, and the telephone line 13b.

When the data transmission is completed, the control unit 9 sends a reset signal to the state change detection unit 7 to reset the operation of the state change detection unit 7.

On the other hand, when the center device 17 receives the data information transmitted from the alarm notification device 1, the alarm device 3 detects an abnormality based on the received data information "3" and sends out an abnormality detection signal, and the abnormality is still present. It is determined that the detection signal is continuously transmitted.

Next, a description will be given of an operation when a cause other than a fire or a gas leak is removed after a lapse of a predetermined time, for example, smoke of cigarette is removed and the alarm 3 is restored to the original normal monitoring state.

In the above-described operation, when the connection with the center is completed and the transmission is executed, the abnormal signal has been recovered. Therefore, when the state detector 5 inputs the H-level normal signal from the alarm 3, the alarm 3 becomes normal. It is determined that the detection state is correct, and the determined state information is sent to the control unit 9.

When inputting the status information from the status detection unit 5, the control unit 9 sets data "0" corresponding to the normal status. When the control unit 9 receives information from the state change detection unit 7,
Data “2” corresponding to the change in the detection state of the alarm 3 is set. Further, the control unit 9 adds data “2” corresponding to the change in the detection state to data “0” corresponding to the normal state, and instructs the transmission unit 11 to transmit the data “2”.
Thus, the transmission unit 11 transmits the data “2” from the control unit 9 to the center device 17 via the telephone line 13a, the exchange 15, and the telephone line 13b.

When the center device 17 receives the data "2" transmitted from the alarm notification device 1, it informs that the alarm device 3 has performed a temporary detection operation based on the received data and has returned to the original normal state again. Can be determined.

In the embodiment shown in FIG. 1, data "2" is set as information relating to a change in the detection state, and the information relating to the change in the detection state is converted into state information of data "0" or data "1". Although it is configured to be additionally transmitted, as another embodiment, the number of state changes of the detection state is doubled,
If the doubled numerical value is set as information relating to the change in the detection state, the information relating to the change in the detection state is added to the above-described state information, and this is transmitted as data information to the center device. The device determines whether the value of the data information is even or odd,
It is possible to determine whether the current detection state of the alarm device is an abnormal state or a normal state. In addition, the center device 17 can determine the number of state changes in the detection state from the integer part of the value obtained by dividing the value of the data information by “2”.

With the above configuration, even if the receiving unit of the center device or the telephone line fails and data data from the alarm notification device 1 cannot be received for a long time, the history of the operation state of the alarm device is maintained. Can be determined.

Further, when transmitting the state information indicating that the alarm 3 has detected an abnormality, the duration of the abnormality detection signal output from the alarm 3 is encoded, and the information on the duration of the encoded abnormality detection signal is described above. When the center device 17 is added to the state information, the center device 17 can recognize the temporary detection operation of the alarm device 3 and the occurrence state of the abnormality in more detail.

Further, when the data information is transmitted from the transmission unit 11 to the center device 17, the state information of the alarm 3 is repeatedly transmitted based on a request from the center device 17,
The center device 17 can more accurately determine the occurrence and continuation of the abnormality.

[Effects of the Invention] As described above, according to the present invention, when there is a change in the detection state of the alarm device, information on the change in the detection state is detected as state information, that is, whether an abnormality is detected or not. Since the system is configured to be transmitted in addition to the information indicating the status, the operation of the alarm and the continuation of the abnormal state can be transmitted by one notification, so that the cost required for transmitting the information can be reduced and maintained. Management costs can be further reduced.

Further, it can be more accurately determined whether the alarm is due to a temporary detection operation of the alarm device or an abnormality.

[Brief description of the drawings]

 FIG. 1 is a block diagram showing one embodiment of the present invention. 3 ... alarm device, 5 ... state detection unit 7 ... state change detection unit, 9 ... control unit 11 ... transmission unit

Claims (1)

(57) [Claims] 1. A state discriminating means for discriminating a detection state in an alarm device and transmitting state information, and a state change detecting means for detecting a change in the detection state in the alarm device and transmitting detection information. And a transmission unit that is activated by the detection information from the state change detection unit and transmits the state information with the detection information added thereto.