JPH0634276B2 - Alarm display device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention detects temperature, smoke density, etc. in an analog manner by a plurality of sensors installed in a warning area and transmits them to a receiver.
The present invention relates to an alarm display device in which an abnormality is discriminated from a detection signal on the receiver side and an abnormal state is identified and displayed according to the detection.

The conventional fire alarm system draws out a detector circuit from the receiver for each warning area and connects multiple fire detectors to each line.The fire detector detects when the temperature, smoke density, etc. due to a fire are detected. It has a function to output a fire detection signal, receives a fire detection signal issued by this fire detector at the receiver to give a fire alarm, and distinguishes the fire occurrence area from the fire detection signal reception line and displays the area. I was trying to do.

However, in such a conventional fire alarm device, the fire display on the receiver is either normal or fire. For example, even if the fire is received due to a malfunction of the fire detector, the receiver side cannot judge it, so the site You have to go to the office to check it, and do not know what the condition is like near the fire detector that was issued when a fire occurred, and take appropriate measures such as instructions for fire fighting and evacuation guidance. Was difficult.

The present invention has been made in view of such conventional problems, and provides an alarm display device capable of taking appropriate judgment and corrective action on the receiver side when an abnormality occurs in a caution area. With the goal.

In order to achieve this object, the present invention provides a plurality of sensors that detect a surrounding condition in a caution area and outputs a detection signal corresponding to the surrounding condition, and transmits detection signals from these sensors to a receiver for identification. As an alarm display device provided for this receiver, when the abnormality of the sensor detection signal is discriminated, the state of the sensor detection signal corresponding to the abnormality discrimination is displayed by a bar graph or the like, and the vicinity of the sensor that has detected the abnormality. The detection signals from the other sensors located at are selected in accordance with a predetermined pattern and are simultaneously displayed by a bar graph or the like, and the display state of each detection signal determines whether or not there is a fire,
It is possible to easily and surely determine the spread status of a fire, prevent non-fire alarms, and appropriately give instructions on fire fighting and evacuation guidance.

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

FIG. 1 is a block diagram showing an example of fire alarm equipment in which the alarm display device of the present invention is used.

First, the configuration will be described. 1 is a receiver, and
It is pulled out to a more vigilant area, and the transmission line 2 has a repeater 3a,
The temperature sensors 4a, 4b, 4c ... And the smoke sensors 5a, 5b, 5c ... Are respectively connected via 3b, 3c.

Here, each of the temperature sensors 4a, 4b, 4c ...
The ambient temperature is detected, a temperature detection signal corresponding to the detected temperature is output, and the smoke sensors 5a, 5b, 5c ... Output a smoke density detection signal corresponding to the surrounding smoke density.

On the other hand, the receiver 1 is provided with a central processing unit (hereinafter referred to as CPU) 6 of a microcomputer for performing fire reception processing by program control, and the transmission line 2 is connected to the CPU 6 via an interface 7, ,
A memory 8 having a ROM fixedly storing a control program and a RAM as a data memory for temporarily storing received data is connected. Further, the CPU 6 is provided with a bar graph display section 9 for displaying an alarm based on a sensor detection signal via the interface 10, and a CRT display section 12 for displaying an alarm by image display via the CRT control section 11. Is provided. Furthermore, a printer 14 for outputting various types of received data is connected via the interface 13, and an operating unit 16 including a keyboard or the like for manually instructing the CPU 6 to perform reception control processing via the interface 15.
In addition, the control device 18 such as smoke prevention equipment and fire extinguishing equipment is operated via the interface 17 in conjunction with the fire reception.

On the other hand, in the transmission processing of the detection signal from the sensor connected to the repeaters 3a, 3b, 3c ... With respect to the receiver 1, the CPU 6 sequentially calls the repeaters 3a, 3b, 3c ... And the called repeaters are connected. The detection signal from the existing sensor is transmitted to the receiver 1, and the transmitted detection signal is transmitted to the CP of the receiver 1.
A so-called polling method is adopted in which the data is read by U6 and the detection data is stored in the memory 8.

Of course, the transmission of the sensor detection data to the receiver 1 is not limited to the polling method. For example, a signal device is connected to the receiver 1 for each sensor, and this signal line is scanned in the receiver to send the sensor detection signal to the CPU 6. You may make it read.

FIG. 2 is a block diagram showing an embodiment of the alarm display device of the present invention realized by the program control of the CPU 6 of FIG.

First, the configuration will be described. The transmission line 2 to which a temperature sensor, a smoke sensor or the like is connected via a repeater is connected to an input / output interface 7, and the input / output interface 7 is provided with an address code for sequentially calling the repeater. The output of the calling circuit 19 for outputting
The receiving circuit 20 is connected to receive the sensor detection signal transmitted from the repeater by calling. The output of the receiving circuit 20 is given to the data memory 21 so that the memory address is designated by the address signal corresponding to the calling code output from the calling circuit 19 and the received sensor detection data is stored in the data memory 21. There is. The detection data of the data memory 21 is given to the comparison circuit 22, and the comparison circuit 22 is given a threshold value for discriminating the abnormality of the detection data from the threshold setting circuit 23, and the detection data exceeds the threshold value. At this time, the comparison circuit 22 produces an abnormality determination output. The output of the comparison circuit 22 is input to one of the AND gates 24, and the address code from the calling circuit 19 is applied to the other input of the AND gate 24. When the comparison circuit 22 produces an abnormality determination output, 24 is set in the permissible state, and the address code from the calling circuit 19 is output. The output of the AND gate 24 is given to the display data selection memory 25, and the display data selection memory 25 is a code representing a predetermined sensor number corresponding to the address data from the calling circuit 19 given via the AND gate 24. Output a signal.

As the storage data of the display data selection memory 25,
For example, if the temperature sensors 4a to 4g are installed in the caution area 26 as shown in FIG. 3, the temperature sensor 4a shown on the vertical axis that is determined to be abnormal by the comparison circuit 22 as shown in the table of FIG. Temperature sensor 4a shown on the horizontal axis for ~ 4g
A code number corresponding to the temperature sensor in the portion indicated by a circle of 4 g is stored as selection data.

As is clear from FIG. 3, the selection pattern shown in FIG. 4 is, for example, when the detection signal of the temperature sensor 4c is determined to be abnormal, the temperature sensors 4a, 4b, 4e located near the temperature sensor 4c. It is predetermined to select the code number.

Referring again to FIG. 2, the display data selection memory 25
Is supplied to the display data reading circuit 27, and the display data reading circuit 27 uses the code number of the temperature sensor read from the display data selection memory 25 for performing display control as the address data and stored in the data memory 21. The data is read, and the display control circuit 28 determines the sensor outputting the detection signal determined to be abnormal to the bar graph display 9 in FIG. 1 or the display 29 including the CRT display unit 12 and the abnormality. The detection signals from other sensors located near the sensor are displayed.

In the illustration of the caution area 26 in FIG. 3, since the temperature sensor 4g is installed in an area 26a that uses fire, such as a boiler room or a kitchen, as will be described later, The detection state may be constantly displayed even in normal times regardless of the abnormality determination of the detection signal.

Next, the display control of the present invention will be described with reference to the flowchart of FIG. 5 by taking as an example the case where the temperature sensors 4a to 4g are installed in the caution area 26 shown in FIG. First, the receiver 1
When the power is turned on, the program control of the CPU 6 is started, the sensor number N indicating the number of the temperature sensors 4a to 4g is set to N = 1 in the block a, the process proceeds to the block b, and the temperature sensor 4a of the N = 1th is set. Read the detection signal. Subsequently, in the determination block c, the sensor number N is N =
It is determined whether or not 7, and at this time, since N = 1, the process returns to the block d, the sensor number N is incremented to N = 2, and the detection signal of the second temperature sensor 4b is read again in the block b. Similarly, the reading of sensor detection signals up to the seventh temperature sensor 4g is repeated.

When the reading of the detection signals from the temperature sensors 4a to 4g is completed and N = 7 in the determination block c, the display control shown in the block e is performed.

The display control in this block e is performed according to the flowchart of FIG.

First, in the determination block A, it is determined whether or not the detection signals from the temperature sensors 4a to 4g obtained in the process of FIG. 5 are equal to or more than a predetermined threshold value, and when all the detection data are below the threshold value, the display is performed. The process returns to the process of reading the sensor detection signal shown in FIG. 5 without performing any process.

In addition, as processing when all the detected data are below the threshold value, as shown in a block D of a broken line, specific sensor data, for example, an area 26a using fire of the caution area 26 in FIG. 3 is provided. Regarding the detection signal of the temperature sensor 4g being operated, the temperature state may be displayed regardless of the abnormality determination of the detection signal so that the temperature state in the boiler room, the kitchen or the like can be constantly monitored.

On the other hand, in the determination block A, any sensor detection data,
For example, if the detection data of the temperature sensor 4c exceeds the threshold value, the process proceeds to block B and the sensor data corresponding to the abnormal data is selected. That is, as shown in FIG. 4, the sensor number to be selected corresponding to the temperature sensor in which the abnormality has occurred is predetermined, and regarding the abnormality determination of the temperature sensor 4c, the temperature installed near the temperature sensor 4c is determined. Four sensor data of the sensors 4a, 4b, 4d, 4e are selected, and the detection signal of the temperature sensor 4c determined to be abnormal in the block C and the temperature sensors 4a, 4b, 4d, 4e located near the temperature sensor 4c are selected. Each detection signal is displayed simultaneously.

FIG. 7 is an explanatory view showing the bar graph display performed by the display control of FIG. 6, and the bar graph display 9 can perform the bar graph display by the light emission drive of the LED or the like for each of the temperature sensors 4a to 4g. The number display section 30 showing the number of the temperature sensor is provided for each bar graph, and the abnormality display section 32 having an indicator lamp showing that the temperature sensor is determined to be abnormal is provided. Since the detection data of the sensor 4c is determined to be abnormal, the indicator light of the abnormality display unit 32 corresponding to the temperature sensor 4c is turned on, and the temperature sensor 4c and other temperature sensors located in the vicinity thereof The detection signals for each of 4a, 4b, 4d, and 4e are displayed in a bar graph.

Therefore, on the receiver side, by observing the display state of the bar graph indicator 9 in response to an alarm from a buzzer or the like when the abnormality of the detection signal is discriminated, it is immediately known that the temperature sensor 4c has detected the abnormality, and Not only the temperature detected by the temperature sensor 4c but also the temperature detected by other temperature sensors located in the vicinity of the temperature sensor 4c are displayed in a bar graph. Therefore, if there is a fire, it is determined to be abnormal as shown in FIG. The temperature sensors 4b and 4d located in the vicinity of the temperature detected by the temperature sensor 4c also have higher detected temperatures than in the steady state, and the detected temperature displayed in the bar graph gradually increases as the fire expands. Therefore, it can be judged as a fire.

On the other hand, when the temperature abnormality of the temperature sensor 4c is not due to a fire, the temperature detected by the other temperature sensors located in the vicinity of the temperature sensor 4c having a high detected temperature remains at the normal temperature display, and even if time elapses. Since there is no change in the temperature detected by the temperature sensors in the vicinity, it is possible to easily determine that the abnormality in the temperature detected by the temperature sensor 4c is due to non-fire.

FIG. 8 shows another embodiment of the alarm display according to the present invention. Instead of the bar graph display 9 shown in FIG.
The case where the detection signal of the temperature sensor 4c is determined to be abnormal on the T display unit 12 is shown as an example. In the bar graph display of the detected temperature on the CRT display unit 12, it is desirable to display in color, and for the detected temperature of the temperature sensor 4c determined to be abnormal, the display color is, for example, red in order to distinguish it from other detected temperatures. It is desirable that the temperature sensors 4a, 4b, 4d, 4e be displayed in a yellow bar graph. Further, it is desirable to show the threshold value Ts for the bar graph and switch to the same red display as the bar graph of the temperature sensor 4c when the bar graph of the detected temperature rises to reach the threshold value Ts. Of course, the detected temperature may be numerically displayed above the bar graphs of the temperature sensors 4a to 4e.

FIG. 9 shows another example of the alarm display using the CRT display unit 12. The detection area and the detected temperature of the temperature sensor 4c which is determined to be abnormal are displayed in the center of the display screen of the CRT display unit 12 as sensor numbers. And the temperature sensors 4a, 4b, 4d, 4 installed around the temperature sensor 4c at the same time.
For each of e, the detected temperature and the sensor number are displayed with a flat warning area.

According to the distributed temperature display shown in FIG. 9, since the display pattern corresponds to the warning area, it is possible to intuitively grasp the spread of fire or the like.

In the above embodiment, the temperature sensor is taken as an example of the sensor for detecting the ambient condition, but the same is true for the smoke sensor for detecting the smoke concentration, and in addition to this, the CO generated in the event of a fire. A sensor for detecting a decrease in gas such as CO, CO or oxygen O may be used. Further, the alarm display is not limited to a single sensor, and the detection signals from the sensors for detecting different ambient conditions may be displayed in combination. You may In addition, similar display control is performed for other warning areas, and as a display function, it is preferable that abnormal display is performed at two or more locations at the same time.

To explain the effect of the present invention, a plurality of sensors that detect the surrounding state in an analog manner and output detection signals according to the surrounding state are installed in the warning area, and the detection signals from these sensors are received. Transmitted to the machine to determine the abnormality of the detection signal,
When an abnormality is detected in the detection signal from one of the sensors, the detection signal from the sensor that has detected the abnormality and other sensors installed in the vicinity is selected and displayed as a bar graph. By observing the display of the detection signal that is determined to be and the display of the detection signal from the sensor located in the vicinity, it is possible to reliably determine whether or not there is a fire, and the sensor that is determined to be abnormal during a fire. From the display status of the detection signal of the sensor installed in the vicinity of the fire, it is possible to grasp the spread of the fire, properly instruct the fire extinguishing activities, guide the evacuation, etc. It is possible to realize a high fire alarm system.

[Brief description of drawings]

FIG. 1 is a block diagram showing an example of a fire alarm system in which the alarm display device of the present invention is used, FIG. 2 is a block diagram showing an embodiment of the present invention, and FIG. 3 is a temperature sensor for a warning area. Explanatory drawing showing an example of installation state, FIG.
FIG. 5 is an explanatory diagram showing a selection pattern of sensor data, FIGS. 5 and 6 are explanatory diagrams showing an example of a bar graph display by the display control of the present invention, and FIG. 7 is a bar graph display by the display control of the present invention. FIG. 8 is an explanatory view showing an embodiment, and FIGS. 8 and 9 are explanatory views showing an example of an alarm display of the present invention by a CRT. 1: Receiver 2: Transmission line 3a, 3b, 3c: Repeater 4a-4g: Temperature sensor 5a, 5b, 5c: Smoke sensor 6: Central processing unit (CPU) 7: Input / output interface 7: Memory 9: Bar graph Display device 10, 13, 15, 17: Interface 11: CRT control unit 12: CRT display unit 14: Printer 16: Operation unit 18: Control device 19: Calling circuit 20: Reception circuit 21: Data memory 22: Comparison circuit 23: Threshold setting circuit 24: AND gate 25: Display data memory 26: Warning area 27: Display data reading circuit 28: Display control circuit 29: Display unit 30: Sensor number display unit 32: Abnormality display unit

Claims (1)

[Claims] 1. A plurality of sensors for detecting a surrounding condition and outputting a detection signal according to the surrounding condition, and a receiver for receiving the detection signal transmitted from the sensors and identifying and displaying the detected condition. In an alarm display device for alarm equipment, each detection signal of the sensor is compared with a predetermined threshold value, and an abnormality determination means that produces an abnormal output when the sensor detection signal exceeds the threshold value and an output of the abnormality determination means cannot be obtained. Normal display control means not displaying all sensor detection signals in normal times, or displaying only sensor detection signals corresponding to a predetermined fire installation area, etc., and an abnormal output of the abnormality determination means was obtained. At the same time, an abnormality display control means for displaying a sensor detection signal corresponding to the abnormality output and selecting and displaying a detection signal from another sensor located in the vicinity of the abnormality detection sensor. An alarm display device characterized by being provided.