JP7755566B2 - Disaster prevention monitoring system - Google Patents

Description

The present invention relates to a disaster prevention monitoring system that receives signals from fire detectors and gas leak detectors connected to signal lines drawn into a restricted area and outputs fire alarms and gas leak alarms.

In a conventional disaster prevention monitoring system known as the R-type, a fire detector equipped with a transmission function is connected to a transmission line drawn from an R-type receiver. The receiver periodically sends a batch AD conversion command to the fire detector to detect sensor data such as smoke density and temperature. The receiver then sends a polling command specifying the fire detector's address, which receives sensor data in response. The received sensor data is compared with a predetermined threshold. If the threshold is exceeded, a fire is detected, and a fire alarm is output using sound or an indicator light. The location of the fire is also displayed using the address of the detector that detected the fire.

In addition, in disaster prevention monitoring systems known as P-type, on-off sensors and transmitters are connected to the sensor lines drawn from the P-type receiver, and fires are monitored on a line-by-line basis.When a fire is detected by the on-off sensor, the alarm current flowing through the line is detected by the P-type receiver, and a fire alarm is output using sound and indicator lights, and a district indicator light is also turned on to indicate the area where the fire has occurred.

In order to display the system status, the receivers in such disaster prevention monitoring systems monitor for malfunctions in the receiver, malfunctions in terminal devices including sensors, and abnormalities in the wiring connecting the terminal devices. If a malfunction or abnormality within the system is detected, a fault indicator light installed on the receiver will light up and an audible fault alarm will be output to notify the user.

When a fault is reported by the receiver in this way, the location and nature of the fault will be displayed on a display such as an LCD panel or LED installed on the receiver, allowing disaster prevention personnel to take the necessary action.

Japanese Patent Application Publication No. 08-255294 JP 2009-087111 A Japanese Patent Application Publication No. 07-262474 JP 2010-272023 A Japanese Patent Application Publication No. 06-003482

However, with these conventional disaster prevention monitoring systems, while the location and nature of each individual failure that occurs in the system are displayed, users who are unfamiliar with the equipment that makes up the system are unable to determine whether failures that do not require immediate attention will result in a loss of monitoring functionality and an impact on human lives, or whether the problem can be addressed at a later date, resulting in the problem of taking time to take appropriate action.

Furthermore, users who are unable to determine the extent of the impact of a malfunction become anxious, and even if the problem can be resolved at a later date, they may make emergency calls to the maintenance manufacturer, and even minor malfunctions may have to be handled late at night, placing a burden on the maintenance manufacturer's work.

The present invention aims to provide a disaster prevention monitoring system that, when a fault is detected, displays the system status with a weighting that indicates the extent to which the fault will affect the system, allowing the user to take appropriate action in the event of a fault.

The present invention provides a disaster prevention monitoring system equipped with a display unit,
The system status is classified into three stages: a failure indication when a state including a failure of a system component is detected, an age-related deterioration indication when a system component has deteriorated due to aging and needs to be replaced at the next inspection, and a normal indication when no failure or age-related deterioration has occurred in the system component.
The display unit is characterized in that the system status is classified into three stages and each of the three stages is displayed at an independent predetermined position.

The present invention provides a disaster prevention monitoring system equipped with a display unit,
The alarms are classified into five levels: the first level indicates a fault that makes disaster prevention monitoring impossible; the second level indicates a fault in the signal line that makes disaster prevention monitoring possible, but the third level indicates a fault in an external device that does not affect disaster prevention monitoring; the fourth level indicates that a system component has deteriorated due to aging and will need to be replaced at the next inspection; and the fifth level indicates that no system component has failed or deteriorated due to aging.
The display unit is characterized in that the system status is classified into five stages and each of the five stages is displayed at an independent predetermined position .

The disaster prevention monitoring system includes a control unit that monitors and evaluates the status of system components ,
The control unit is characterized by evaluating whether the system component being evaluated is in a failure state in which disaster prevention monitoring is impossible , a state prior to the failure state in which a predetermined amount of deterioration due to aging is observed, or a state in which the system component is not in a failure state and no predetermined amount of deterioration due to aging is observed.

(Basic effects)
The present invention provides a disaster prevention monitoring system equipped with a display unit,
The system status is classified into three levels: a failure display when a state including a failure of a system component is detected, an aging deterioration display when a system component has deteriorated over time and needs to be replaced at the next inspection, and a normal display when the system component has not failed or deteriorated over time. The display unit displays each of the three system statuses classified into three levels in a separate predetermined position , so that when a failure occurs, the user can easily tell by looking at the display on the system status indicator whether the failure requires immediate action or not, and can minimize the impact of the failure by taking appropriate action to repair the failure. Furthermore, even when a minor failure occurs, the user can easily identify it, reducing the number of emergency calls made by anxiety at night and reducing the workload of maintenance manufacturers.

(Assessment by assigning ranks or points to failures)
In addition, the control unit assigns a predetermined rank or a predetermined score indicating the degree of failure depending on the type of failure of the system component, and when a failure of a system component is detected, the degree of failure is displayed on the system status display according to the rank or score assigned to the detected failure, so that the degree of failure is evaluated as a constant using a rank or score, making it possible to display the system status according to the degree of failure.

(Effect of changes in rank or score for malfunctions)
Furthermore, the control unit can change the allocation of ranks or scores indicating the degree of failure depending on the type of failure of a system component based on setting operations, so that the ranks or scores indicating the degree of failure can be changed appropriately as needed to correspond to the type of failure.

Effect of Rating 1 on Assigning Ranks or Points to Failures
Furthermore, when the control unit detects a condition including a failure of a system component, it classifies the condition into one of three stages: failure of at least one stage including a predetermined rank or score; age-related deterioration with a higher rank or score than failure, in which the system component has deteriorated over time and will need to be replaced at the next inspection; or no failure with the lowest rank or minimum score, in which the system component has not failed.The degree of failure is displayed on the system status indicator according to the rank or score assigned to the classified stage, so that if the failure is of a predetermined rank or score, it can be determined that immediate action is required, and if it is not age-related deterioration, it can be determined that the system is in a normal state without any problems, and furthermore, no failure with the lowest rank or minimum score can be determined to be a completely normal state.

(Effect of evaluation by assigning ranks or points to failures)
Furthermore, when the control unit detects a state including a failure of a system component, it classifies the system component as one of the following: a first failure with the highest rank or highest score in which disaster prevention monitoring by the receiver is not possible; a second failure with the next highest rank or score after the first failure in which disaster prevention monitoring by the receiver is possible but there is a failure in the signal line; a third failure with the next highest rank or score after the second failure in which disaster prevention monitoring by the receiver is possible and the signal line is normal but fault information is input to the receiver from an external device; a fourth failure with the next highest rank or score after the third failure in which deterioration over time has occurred in the system component and it will need to be replaced at the next inspection; or no failure with the lowest rank or score in which no failure has occurred in the system component. The system is categorized into stages, and the degree of failure is displayed on the system status indicator according to the rank or score assigned to the classified stage. Therefore, if there is a first failure with the highest rank or highest score, it can be determined that immediate action is required, if there is a second failure with the next highest rank or score, it can be determined that action will be taken at a later date, if there is a third failure with the next lowest rank or score, it can be determined that a more relaxed response is sufficient, and if there is a fourth failure with the next lowest rank or score, it can be determined that no action is required until the next regular inspection, and if there is a fourth failure, it can be determined that there is no problem in determining that the system is in a normal state, and furthermore, if there is no failure with the lowest rank or score, it can be determined that there are no failures at all and that the system is in a completely normal state.

(The effect of displaying the status with the highest rank or highest score for multiple failures)
Furthermore, when the control unit detects multiple faults in the system components, the degree of fault is displayed on the system status indicator according to the highest rank or highest score among the multiple detected faults, so that the system status due to the fault with the highest priority among the multiple faults can be displayed.

(Effect of displaying the status by sum of ranks or points for multiple faults)
Furthermore, when the control unit detects multiple faults in system components, it displays the degree of fault on the system status indicator according to the total score of the multiple faults detected. For example, if multiple faults with low scores have occurred, the system status displayed will be that of a fault with a higher score than the currently occurring faults. Even if the faults are of a low rank or score, the occurrence of multiple faults indicates a high risk to the system, so the degree of fault is increased, enabling appropriate action to be taken.

(Effect of stopping the status display during disaster prevention alarms)
In addition, the control unit is configured to stop the display of the degree of failure on the system status indicator when a disaster prevention alarm is output from the receiver.Therefore, when a fire alarm is issued, there is no need to display the degree of failure on the system status indicator, and since this could confuse the alarm display, the system status indicator is stopped and the display is erased.

(Effect of Indicators Increasing the Number or Amount of Display According to the Degree of Failure)
Furthermore, the system status indicator is provided with display elements whose number or amount of display increases as the degree of failure increases, so that the degree of failure can be displayed, for example, by the number of LEDs displayed or by expanding the display area using a bar graph, making it possible to intuitively determine the extent of the failure by looking at the display.

(The effect of the indicator changing from cool to warm colors as the degree of failure increases)
Furthermore, the system status indicator changes its display color from cool, safe colors to warm, dangerous colors as the degree of failure increases; for example, the system status indicator changes its display color from green or blue to yellow and then to red as the degree of failure increases, making it possible to intuitively determine the extent of the failure based on the display color of the system status indicator.

(Effect of displaying the degree of failure on the meter indicator)
Furthermore, since the system status indicator is a meter indicator in which the amplitude or rotation angle of the pointer increases as the degree of failure increases, the degree of failure can be easily determined from the position of the pointer.

(Effect of displaying the degree of failure by the display color of a single indicator light)
In addition, the system status indicator is equipped with a single indicator light that changes color depending on the degree of failure, which simplifies the display of the system status and makes it easy to determine the degree of failure just by looking at the display color.

(Effect of displaying the degree of failure using the flashing cycle)
In addition, the system status indicator changes the blinking cycle of the indicator light depending on the degree of failure. For example, by controlling the blinking cycle to shorten as the degree of failure increases, if there is a serious failure that makes disaster prevention monitoring by the receiver impossible, the indicator light will blink continuously in short cycles, making it easy to determine that the system is in a state that requires urgent action.

(Effect of control to change the fault display format according to the degree of fault)
In addition, the control unit changes the display format of the fault information on the LCD display provided in the receiver according to the increase in the degree of fault. For example, by changing the color, size, font, etc. of the text of the fault information displayed on the LCD display according to the increase in the degree of fault, the extent of the fault can be strongly conveyed to the user, making it easier to identify the fault that has occurred.

An explanatory diagram showing the R-type disaster prevention receiving panel Block diagram showing the outline of the R-type disaster prevention monitoring system An illustration showing the system status indicator An explanatory diagram showing the relationship between the degree of failure, rank, and score. An explanatory diagram showing the system status displayed by the system indicator's ranks A, B, C, D, and E. An explanatory diagram showing the system status displayed by a meter-type system indicator, with ranks A to E.

[Disaster prevention monitoring system overview]
(R-type receiver)
Figure 1 is an explanatory diagram showing an R-type disaster prevention receiving panel. As shown in Figure 1, the R-type receiver 10 is installed in a building's disaster prevention center, manager's office, etc., and monitors abnormalities such as fires and gas leaks by connecting sensors such as fire detectors with transmission functions and gas leak detectors connected via repeaters via transmission lines, and also connects control devices such as local sound equipment to the transmission line to enable control operations.

The R-type receiver 10 has a door-type receiver panel 12 mounted on the front of its box-shaped housing. The receiver panel 12 is equipped with a display unit 14, an operation unit 16, and a printer 18. An exposed switch is located above the operation unit 16, and a switch is located inside a sub-door 17 that can be opened and closed below it.

The display unit 14 is equipped with a fire indicator light, a gas leak indicator light, and various indicator lights that indicate faults in external equipment.

The operating unit 16 is equipped with exposed external controls such as a fire/gas leak detection switch, an audio stop switch, and a district audio pause switch. Additionally, the inside of a sub-door 17 of the operating unit 16 is equipped with a recovery switch, a district audio simultaneous alarm switch, and a general interlocking stop switch. During normal monitoring, the sub-door 17 is closed, but when necessary, the sub-door 17 is opened downwards to operate the switches.

The printer 18 prints out the time of event occurrence and event details when an event such as a fire alarm or gas leak alarm occurs on the R-type receiver 10.

In addition, in this embodiment, a system status indicator 20 is provided on the receiver panel 12 of the R-type receiver 10. The system status indicator 20 displays the degree of failure of the system components, including the receiver itself, detectors such as fire detectors and gas leak detectors, and transmission lines, which are monitored and evaluated by the R-type receiver 10.

As a result, by looking at the display on the system status display 20, when a malfunction occurs, the user can easily tell whether or not the malfunction requires immediate attention, and by taking appropriate measures to repair the malfunction, the impact of the malfunction can be minimized. Furthermore, even when a minor malfunction occurs, the user can easily tell from the display on the system status display 20 that it is a minor malfunction, reducing the likelihood of users becoming anxious and making emergency calls late at night, and reducing the workload of maintenance manufacturers.

(Disaster prevention monitoring system)
Figure 2 is a block diagram showing an outline of the R-type disaster prevention monitoring system. In Figure 2, the R-type receiver 10 is provided with a control unit 22, a transmission unit 24, a display unit 14, an operation unit 16, an alarm unit 26, a report transfer unit 28, and a system status display 20.

A transmission line 30 is drawn from the R-type receiver 10 toward the facility's security area, and an analog sensor 32 is connected to the transmission line 30 as a detector.

A repeater 34 is also connected to the transmission line 30, and an on/off sensor 38 and a transmitter 40 are connected to a sensor line 36 drawn from the repeater 34. A gas leak detector 42 is also connected to another repeater 34.

The analog sensors 32 and repeaters 34 are equipped with a transmission function for bidirectionally transmitting information to and from the R-type receiver 10, and are pre-assigned unique addresses, including the R-type receiver 10. For example, if the maximum number of addresses is 256, then up to 255 analog sensors 32 and repeaters 34 can be connected to a single transmission line 30, excluding receiver addresses.

The control unit 22 of the R-type receiver 10 is composed of a computer circuit equipped with a CPU, memory, and various input/output ports, and performs specified receiver control by executing programs.

Downstream signals from the R-type receiver 10 to the analog sensor 32 and repeater 34 are transmitted in voltage mode. These voltage-mode signals are transmitted as voltage pulses that change the voltage on the transmission line 30 between, for example, 18 volts and 30 volts.

In contrast, the upstream signals from the analog sensor 32 and repeater 34 are transmitted in current mode. In this current mode, a signal current flows through the transmission line 30 at the timing of bit 1 of the transmission data, and the upstream signal is transmitted to the receiver as a so-called current pulse train.

Reception control by the control unit 22 of the R-type receiver 10 is as follows: During normal monitoring, the R-type receiver 10 sends polling commands for normal monitoring that sequentially specify terminal addresses, and when the analog sensor 32 and repeater 34 receive a polling command that matches their own set address, they respond with normal monitoring. Therefore, the R-type receiver 10 can detect a fault by considering an analog sensor 32 or repeater 34 that does not respond to the polling command to be a fault.

The R-type receiver 10 also repeatedly sends a batch AD conversion command to all terminal addresses at each polling command transmission cycle. When the analog sensor 32 receives the batch AD conversion command from the R-type receiver 10, it samples the detected analog detection data, such as smoke density and temperature, and compares it with a predetermined fire level.

If the analog detection data sampled by the analog sensor 32 exceeds the fire level, an interrupt signal is sent to the R-type receiver 10 in response to the polling command. This interrupt signal sends a signal that is not normally used, such as a response bit string of all 1s.

The repeater 34 also samples the reception status of the on/off sensor 38 or gas leak sensor 42 connected to the sensor line 36 based on the batch AD conversion command from the R-type receiver 10, and if it detects a fire alarm or gas leak, it sends an interrupt signal to the R-type receiver 10.

When the R-type receiver 10 receives an interrupt signal from the analog sensor 32 or repeater 34, it issues a group search command and receives an interrupt response from the group that includes the analog sensor 32 or repeater 34 that detected the fire, thereby identifying the group.

Next, the system sequentially polls the addresses of the individual analog sensors and repeaters in the identified group, and by receiving fire responses such as analog data and fire alarm data, it recognizes the sensor address of the analog sensor 32 or repeater 34 that detected the fire and performs a fire alarm.

(Fault monitoring of system components)
In addition, the control unit 22 of the R-type receiver 10 monitors failures in the system components, including the receiver itself, the transmission line 30, the analog sensor 32, the repeater 34, and even external devices connected via the transmission unit 28.

Fault monitoring for the R-type receiver 10 includes, for example, backup power supply abnormalities, backup power supply voltage abnormalities, receiver memory abnormalities, receiver communication abnormalities, receiver unit abnormalities, printer abnormalities, and printer paper exhaustion. Furthermore, fault monitoring for the R-type receiver 10 includes managing the useful life of the equipment that makes up the system, and determining whether it has deteriorated due to aging when the useful life is approaching.

Fault monitoring for the transmission line 30 includes faults in the transmission line, faults at the transmission line termination, and serial communication errors. Fault monitoring for the analog sensors 32 and repeaters 34 includes address duplication, terminal disconnection, and internal errors. Furthermore, fault monitoring for external devices includes the input of fault information from fire pump equipment, for example, which provides various display inputs to the R-type receiver 10.

(System status indicator and failure severity assessment)
FIG. 3 is an explanatory diagram showing the system status indicator provided in the R-type receiver of FIG. 1, and FIG. 4 is an explanatory diagram showing a list of the relationship between the fault items and the ranks and scores indicating the degree of fault.

As shown in Figure 3, the system status indicator 20 of this embodiment has display elements indicating an increasing degree of failure, arranging a first failure indicator 46a, a second failure indicator 46b, a third failure indicator 46c, a fourth failure indicator 46d, and a no-failure indicator 46e using LEDs or the like in order from highest to lowest failure level (from right to left). Above the indicators, a number from 1 to 5 is displayed as a risk level number 45 indicating the level of risk due to the failure, and below this, a triangular safety indicator 48 indicating the degree to which the system status is on the safe side (OK) and a triangular danger indicator 50 indicating the degree to which the system status is on the dangerous side (NG) are provided.

Furthermore, the display color of the first fault indicator 46a is red, the display color of the second fault indicator 46b is orange, the display color of the third fault indicator 46c is yellow, the display color of the fourth fault indicator 46d is light green or blue, and the display color of the no fault indicator 46e is dark green or blue. When the risk is low, i.e., when the safety level is high, the display color is cool green or blue, and when the risk is high, the display color is warm yellow, orange, or red.

In this embodiment, as shown in Figure 4, the control unit 22 of the R-type receiver 10 classifies fault items detected by the disaster prevention monitoring system into ranks and scores indicating the severity of the fault, for example, on a five-level scale, depending on the fault content.

A first-order fault is a failure that prevents the receiver from performing disaster prevention monitoring and has the potential to affect human life, resulting in the highest rank A and a maximum score of 10 points. Examples of first-order faults include R-type receiver 10 backup power supply abnormality, backup power supply voltage abnormality, receiver internal memory abnormality, receiver internal communication abnormality, receiver internal unit abnormality, transmission line breakage in the transmission line 30, address duplication in the analog sensor 32 or repeater 34, terminal disconnection, internal abnormality, etc.

A second failure is one in which disaster prevention monitoring by the receiver is possible, but there is an abnormality in the signal line, and it is ranked B, the second highest after the first failure, with a score of 3. This second failure includes a failure at the transmission line termination of the transmission line 30, a serial communication abnormality, etc.

A third type of failure occurs when disaster prevention monitoring is possible using the receiver and the signal lines are normal, but fault information is being input to the receiver from an external device, or when a printer runs out of paper and does not require immediate action. This type of failure is ranked C, the second highest after the second type of failure, and is scored 2 points.

The fourth failure is a failure in which disaster prevention monitoring is possible using the receiver, the signal lines are normal, and no fault information is being input from external devices, but a system component has deteriorated over time and will need to be replaced at the next inspection. This failure is ranked D, the second highest after the third failure, and is worth 1 point. With this fourth failure, the disaster prevention monitoring system is functioning normally, and the risk to the system as a whole is extremely low.

No failure means that there are no failures in the system components, resulting in the lowest rank E and minimum score of 0, and the system is in a state with absolutely no problems and zero risk.

In addition, the control unit 22 of the R-type receiver 10 can, as needed, change the rank or score assignment indicating the degree of failure according to the failure type of the system components shown in Figure 4 through a specified setting operation.

(Evaluation and display of the degree of failure)
FIG. 5 is an explanatory diagram showing the display of the system status indicator according to ranks A, B, C, D, and E.

Figure 5 (A) shows the system status when a first fault with the highest rank A and the highest score of 10 points is detected in the fault severity scale shown in Figure 4. The first fault indicator 46a, second fault indicator 46b, and third fault indicator 46c are lit or flashing, indicating that the system is in the most dangerous state and requires immediate action to address the detected fault.

Figure 5 (B) shows the system status when a second fault with a score of 3 and rank B in the fault severity scale of Figure 4 is detected. The second fault indicator 46b and the third fault indicator 46c are either lit or flashing, indicating that no immediate action is required, but that a prompt response is required.

Figure 5 (C) shows the system status when a third fault with a score of 2 and rank C in the fault severity scale of Figure 4 is detected. Only the third fault indicator 46c is lit or flashing. This indicates a minor fault such as a malfunction in an external device or the printer running out of paper. It is not appropriate to leave the fault unattended, so it is best to respond as quickly as possible.

Figure 5 (D) shows the system status when a fourth fault with a score of 1 and rank D in the fault severity scale of Figure 4 is detected. Only the fourth fault indicator 46d is lit or flashing, and there is ample time to take action. For example, it is sufficient to check for equipment nearing the end of its useful life and consider measures such as replacement.

Figure 5 (E) shows the system status when no fault is detected, with a score of 0 and a fault level of rank E in the fault severity scale shown in Figure 4. Both the fourth fault indicator 46d and the no-fault indicator light 46e are lit or flashing, and the system is in a completely normal state.

(Status displayed by total rank or score for multiple faults)
When the control unit 22 of the R-type receiver 10 detects multiple faults in the system components, the control unit 22 may display the degree of fault on the system status display 20 according to the total score of the multiple detected faults.

For example, if the control unit 22 detects the third and fourth faults in Figure 4, it calculates a score of 3, adding the respective scores of 2 and 1, and displays a fault severity equivalent to the second fault, which is one rank higher, on the system status display 20. As a result, even if a fault has a low score, since multiple occurrences pose a high risk to the system, the system status is displayed with a higher fault severity, allowing for appropriate response.

(Status display stops when a disaster alert occurs)
When a fire alarm or gas leak alarm is output, the control unit 22 of the R-type receiver 10 controls the system status display 20 to stop displaying the degree of failure and turn off the display. By turning off the display on the system status display 20 when a disaster prevention alarm is output in this way, it is possible to prevent the display on the system status display 20 from confusing the display of a disaster prevention alarm such as a fire or gas leak.

For example, when a fire alarm is output, if the system status display 20 displays a system status due to a failure in another sensor, such as that shown in Figure 5(A), there is a risk that the alarm will be interpreted as a false alarm due to a failure, and such confusion can be prevented by erasing the display on the system status display 20.

(Indication of the degree of failure on the meter display)
FIG. 6 is an explanatory diagram showing the display of ranks A to E indicating the degree of failure using a meter-type system status indicator.

As shown in Figure 6(A), the system status indicator 60 of this embodiment has a ring-shaped scale 62 on the meter panel. The ring-shaped scale 62 is divided into areas 62e-62a of risk levels 1-5, which correspond to the first through fourth faults and no faults in Figure 4, and has a meter pointer 64 that rotates as the fault level increases.

As shown in Figures 6(A) to 6(E), the display operation of the meter-type system status indicator 60 is to rotate the meter pointer 64 to indicate the corresponding risk level areas 62e to 62a of the ring-shaped scale 62 corresponding to the evaluation results, corresponding to the degree of failure from 1 to 5, based on the evaluation of the degree of failure for the first to fourth detected failures and no failures, and the system status due to the detected failure can be recognized intuitively from the position of the meter pointer 64.

The meter-type system status indicator 60 may be an analog meter or a digital meter. In addition to displaying the meter needle 64, the background color of the meter panel may be changed to green or blue, light green or blue, yellow, orange, or red according to the risk level 1 to 5.

[Modifications of the present invention]
(P-type receiver)
The above embodiment uses an R-type disaster prevention monitoring system as an example, but a P-type disaster prevention monitoring system may also be similarly configured by providing a system status indicator in the P-type receiver to display the level of danger and/or safety depending on the degree of failure.

(Evaluation by assigning ranks or points)
In the above embodiment, the system status is evaluated by classifying into five levels, from first to fourth failure and no failure, and assigning ranks or scores to each level. However, in another embodiment, when the control unit 22 of the R-type receiver 10 detects a state including a failure of a system component, it may classify the state into one of the following levels: failure with at least one level including a predetermined rank or score, aging deterioration with a higher rank or score than failure, in which the system component has deteriorated over time and will need to be replaced at the next inspection, or no failure with the lowest rank or minimum score, in which no system component has failed, and display the degree of failure on the system status indicator according to the rank or score assigned to the classified level.

In addition, while the above embodiment evaluates the system status in five stages, this is not limited to this and the evaluation may be divided into three stages, for example, major failure, minor failure, and no failure, or any other appropriate multiple stages.

(System Status Indicator)
In another embodiment of the system status indicator, the system status indicator may be a single indicator light whose color changes depending on the severity of the fault, such as from a cool, safe color to a warm, dangerous color as the severity of the fault increases.

In another embodiment of the system status indicator, the blinking period of the indicator light may be changed depending on the degree of failure. In this case, the blinking period of the indicator light is controlled to become shorter as the degree of failure increases.

Furthermore, the display format of the system status indicator is not limited to the above embodiment, and any appropriate display configuration can be used.

(Display color control according to the degree of failure of the receiver display)
The control unit 22 of the R-type receiver 10 also changes the display format of the liquid crystal panel 15 provided in the R-type receiver 10 in accordance with an increase in the degree of failure. This change in display format may involve, for example, changing the color of the text of the failure information displayed on the liquid crystal panel 15 from a cool, safe color to a warm, dangerous color in accordance with an increase in the degree of failure, or increasing the text size of the failure information in accordance with an increase in the degree of failure. The font size of the text of the failure information may also be increased in accordance with an increase in the degree of failure. Furthermore, both the text color and the text size of the failure information may be changed in accordance with an increase in the degree of failure.

In this way, by changing the display format of the fault information on the LCD panel 15 as the fault severity increases, the extent of the fault is more clearly indicated to the user, making it easier to identify the fault that has occurred.

(others)
The present invention also includes appropriate modifications that do not impair the objects and advantages thereof, and is not limited to the numerical values shown in the above embodiments.

10: R-type receiver 12: Receiver panel 14: Display unit 16: Operation unit 17: Sub-door 18: Printer 20, 60: System status indicator 22: Control unit 24: Transmission unit 26: Alarm unit 28: Reporting unit 30: Transmission line 32: Analog sensor 34: Repeater 36: Sensor line 38: On/off sensor 40: Transmitter 42: Gas leak detector 45: Hazard level number 46a: First fault indicator 46b: Second fault indicator 46c: Third fault indicator 46d: Fourth fault indicator 46e: No fault indicator 48: Safety indicator marker 50: Hazard indicator marker 62: Ring-shaped scale 64: Meter pointer

Claims (2)

A disaster prevention monitoring system equipped with a display unit,
The system status is classified into three stages: a failure indication when a state including a failure of a system component is detected, an age-related deterioration indication when a system component has deteriorated due to aging and needs to be replaced at the next inspection, and a normal indication when no failure or age-related deterioration has occurred in the system component.
A disaster prevention monitoring system characterized in that the display unit displays each of the system states classified into three stages at a predetermined position independent of each of the three stages.
A disaster prevention monitoring system equipped with a display unit ,
The alarms are classified into five levels: the first level indicates a fault that makes disaster prevention monitoring impossible; the second level indicates a fault in the signal line that makes disaster prevention monitoring possible, but the third level indicates a fault in an external device that does not affect disaster prevention monitoring; the fourth level indicates that a system component has deteriorated due to aging and will need to be replaced at the next inspection; and the fifth level indicates that no system component has failed or deteriorated due to aging.
A disaster prevention monitoring system characterized in that the display unit displays each of the system states classified into five levels at a predetermined position independent of each of the five levels.