JP2020042862A - Fire alarm system and testing method thereof - Google Patents

Abstract

To simply and certainly grasp a test alarm by detection of heat, smoke and gas by an alarm pilot lamp without confirming alarm display on a fire receiver side by an inspector who tests a fire sensor by using a test jig.SOLUTION: A complex fire sensor 12 which detects heat temperature, smoke concentration and gas concentration due to a fire is connected with a transmission line 16 pulled out from a fire receiver 10. A test mode is set in the fire sensor 12 when a fire test operation is detected by the fire receiver 10. The fire sensor 12 performs display control of alarm pilot lamps 30 to be different from one another correspondingly to each alarm test when an alarm test by detection of the heat temperature, an alarm test by detection of the smoke concentration and an alarm test by detection of the gas concentration are performed by using a test jig 84 in a state of the test mode. For example, the fire sensor 12 repeats flickering of once by heat detection, flickering of twice by smoke detection, flickering of three times by gas detection of the alarm pilot lamps 30 at predetermined idle cycles.SELECTED DRAWING: Figure 7

Description

  The present invention relates to a fire alarm system in which a fire detector that detects a fire by detecting the concentration of gas generated at the time of a fire such as CO in addition to the smoke concentration and temperature due to a fire in a transmission path from a fire receiver and its fire alarm system are provided. Related to the test method.

  Conventionally, a fire detector that detects a fire and outputs an alarm signal to a receiver to perform a fire alarm includes a smoke detector that detects smoke caused by a fire and a heat sensor that detects heat (temperature) caused by a fire Is generally known.

  However, it is sometimes difficult to respond quickly and appropriately to various fire conditions, such as a smoldering fire or an ignition fire, using only detection information such as temperature or smoke concentration. 2. Description of the Related Art A composite fire detector that detects a fire quickly without causing false or unreported fires based on multiple fire judgments is known.

  On the other hand, in the event of a fire, it is known that gas such as CO is generated in addition to the smoke and heat fire detection parts.A gas sensor is installed in the detector to detect the gas concentration along with the smoke concentration and heat temperature. A composite type fire detector that determines a fire by using a fire detector has also been considered.

JP 2006-268119 A JP-A-11-310286 JP 2005-251037 A JP 2009-529169 A JP 2011-141629 A

  By the way, in the case of a fire alarm system in which a composite fire detector that detects heat, smoke and gas to determine a fire is connected to the transmission line from the fire receiver, the inspector performs a test during the periodic inspection. The jig is set on the fire detector, the test is issued by inflowing smoke, the test is issued by applying heat, and the emission test is performed by injecting CO gas.

  The test jig used to test the combined fire detector has a smoke detector for a smoke detection test, a heating unit for a heat detection test, and a gas cylinder for a gas detection test. With the test jig set in the vessel, switch to the smoke generating section, heating section, and gas cylinder in order, and check the test report.

  When the smoke, heat, and gas alarm tests are performed using the test jig in this way, the alarm indicator light provided on the fire detector lights or flashes with each test alarm, and the test alarm The message is transmitted to the fire receiver, and the fire receiver recognizes and displays the type of test report and the detector address from the received report message, so that it is possible to confirm that the fire detector has operated normally.

  However, an inspector who is conducting a fire detector fire test using a test jig at the installation site will not be able to hear the test fire when the fire detector fire indicator light flashes or lights up when the test fires. It is clear that there was a time delay between when the test jig was switched to smoke, heat, and gas and the alarm was issued after the smoke, heat, and gas were added until the alarm was issued. For example, even if the warning indicator light flashes, it is difficult to tell whether this is due to smoke, heat, or gas, so it is necessary to contact another inspector on the fire receiver side with a transceiver or the like to confirm. There is a problem that it takes time and effort to inspect a fire detector known as a walk test mode in which the user walks over a fire detector installed in a security area.

  According to the present invention, an inspector performing a fire detector test using a test jig issues a test alert by detecting smoke, heat, and gas without checking the alert display on the fire receiver side. An object of the present invention is to provide a fire alarm system and a test method thereof that can be easily and reliably grasped by an alarm indicator.

(Fire alarm system)
The present invention provides a fire detector for detecting a plurality of fire elements including at least two kinds of heat temperature, smoke concentration and gas concentration due to a fire,
A fire receiver connected to the fire detector,
In the fire alarm system equipped with
The fire detector turns on or off the alarm indicator one or more times at a given lighting time and a given blinking cycle depending on the type of test alert based on heat temperature detection, smoke concentration detection, or gas concentration detection. The method is characterized in that the blinking is repeated with a predetermined pause period after the blinking.

(Test method for fire alarm system)
The present invention provides a fire detector for detecting a plurality of fire elements including at least two kinds of heat temperature, smoke concentration and gas concentration due to a fire,
A fire receiver connected to the fire detector,
In the test method of the fire alarm system equipped with
The fire detector turns on or off the alarm indicator one or more times at a given lighting time and a given blinking cycle depending on the type of test alert based on heat temperature detection, smoke concentration detection, or gas concentration detection. The method is characterized in that the blinking is repeated with a predetermined pause period after the blinking.

(Effect of fire alarm system)
The present invention relates to a fire alarm system in which a detector for detecting a plurality of fire factors including smoke concentration, heat temperature and gas concentration due to a fire is connected to a transmission line drawn from a fire receiver. When a fire test operation is detected, a test mode is set on the fire detector.The fire detector sets the test mode with the fire receiver and fires by detecting multiple fire elements using a test jig. When an alarm test was performed, the display of the alarm indicator was controlled in a different manner in response to the fire test of each fire element, so the inspector was installed in a guard area using a test jig. For the fire detector, for example, when the test operation of smoke inflow, heating, and test gas inflow is performed in order, the fire detector responds to the test report by smoke detection, the test report by heat detection, and the test report by gas detection. Alarm indicator lights are different By displaying the alarm in the above manner, the inspector can easily know whether the test was generated by smoke, heat, or gas, and contacted the fire receiver to determine the type of test alarm. There is no need to confirm, and fire alarm tests (tests in the walk test mode) of multiple fire detectors whose test mode is set by instructions from the fire receiver can be performed continuously, and fire detector inspection Enables efficient work. In addition, a fire detector that determines that a fire has occurred when the smoke concentration or heat temperature exceeds the predetermined threshold value and the CO concentration exceeds the predetermined threshold value, or changes the smoke concentration or heat temperature threshold value according to the CO concentration Even for sensors that do not judge a fire based on CO concentration alone, such as a sensor that makes a judgment, a test report can be issued only for CO concentration at the time of inspection and a test report can be displayed according to the CO concentration. The worker can surely perform the test for each fire element provided in the fire detector, and check the test result at the location of the fire detector.

(Effects of the control procedure of the sensor firing test)
In addition, when the fire receiver detects a test operation, it sets the receiver test mode, transmits a test start message to the specified fire detector, and issues a test report from the fire detector that has set the detector test mode. When a message is received, a lighting control message is sent to the fire sensor that sent the test alert message, and when a test end operation is detected, a test end message is sent to the fire sensor and the receiver test mode is set. On the other hand, the fire detector sets the sensor test mode when the test start message is received from the fire receiver, and sets multiple fires using the test jig in the setting state of the sensor test mode. When a fire test by element detection is performed, a test report message is transmitted to the fire receiver, and when a lighting control message is received from the fire receiver, a test report by detecting multiple fire elements is performed in a different manner. As shown The fire alarm indicator light is controlled, and when the test end message is received from the fire receiver, the sensor test mode is canceled. If a fire test is continuously performed by detecting multiple fire elements, for example, detecting smoke concentration, detecting heat temperature, or detecting gas concentration, the display of a warning indicator lamp based on the test fire of the first fire element is performed. Stopped based on the next fire element test report, switched to the display of a new test report, and always responded to the latest test report even if test reports of multiple fire elements continued. With the display of the alarm display lamp, it is possible to identify test alarms caused by a plurality of fire factors by displaying the alarm indicator lamps in different modes according to the order of the test alarms caused by the plurality of fire factors.

In addition, the display control of the warning indicator light based on the test report is performed by transmitting the test report message from the fire detector to the fire receiver, and the fire receiver controlling the lighting of the fire detector that transmitted the test report message. Since the message is transmitted and the display of the alarm indicator is controlled, the display of the alarm indicator by the test alarm of the fire detector is displayed between the fire detector that fired the test and the fire receiver. This means that transmission / reception has been performed, and it can be confirmed at the same time that the fire receiver has normally operated with the test alert.

(Effects of the fire alarm that was fired by the test)
In addition, the reception control unit of the fire receiver detects the number of fire detectors controlling the alarm indicator lights by test notification, and when the number of fire detectors reaches a predetermined number, the oldest alarm is generated. A fire extinguishing control message is transmitted by designating the fire sensor that is controlling the indicator light, and when the extinguishing control message is received from the fire receiver, the sensor control unit of the fire sensor controls the alarm indicator light. Since the fire detector was stopped, when a fire test was performed for multiple fire detectors, the warning indicator lights were simultaneously fired up to a predetermined number of fire detectors determined by the allowable range of the power capacity of the fire receiver. Display control is in progress, making it possible to easily distinguish fire detectors that have been tested from fire detectors that have not been tested, and duplicate fire detector fire tests when multiple inspectors perform fire tests simultaneously. Can be prevented.

  In addition, every time a test report message is received from a new fire sensor, the reception control unit of the fire receiver designates the fire sensor that is controlling the alert indicator light based on the previous test report and turns off. A control message is transmitted, and the sensor control unit of the fire detector stops the control of the alarm indicator when it receives a turn-off control message from the fire receiver. When testing a certain fire detector, the previous fire test is performed and the control of the fire detector's warning indicator light stops, and the fire detector's warning display that is issuing a test is issued. Only display control of the lamp is performed, and power consumption by controlling the alarm display lamp can be reduced.

(Effect of test alert display by number of blinks)
In addition, the fire detector is designed to vary the number of times the warning indicator flashes in response to test alerts based on the detection of multiple fire elements. The relationship can be easily grasped.

(Effects of repeated display of smoke, heat, and gas due to repeated blinking and pausing)
In addition, several fire factors are smoke concentration, heat temperature, and CO concentration, and the fire detector emits a warning indicator light in response to a test report based on smoke concentration detection, heat temperature detection, or gas concentration detection. Since the flashing is repeated at intervals of a predetermined pause after blinking one or more times, when the test issuance is switched by the number of times of the flashing of the alarm indicator light, the idle time by the predetermined pause is entered, and the predetermined time is entered. It is possible to easily and surely recognize the type of test report based on a change in the number of blinks.

  For example, the fire detector flashes the alarm indicator once, twice, or three times in a predetermined flashing cycle in response to a test alarm based on smoke concentration detection, heat temperature detection, or gas concentration detection. After one blink, two blinks or three blinks are repeated after a predetermined pause period, so that if one blink, a test report of smoke density detection is issued, if two blinks, a test report of heat temperature detection is issued, three times If a blink occurs, a test report of a plurality of fire elements can be easily and reliably identified from a change in a predetermined number of blinks, such as a test report by gas detection.

(Effect of test method of fire alarm system)
The effect of the test method for the fire alarm system of the present invention is substantially the same as the effect of the fire alarm system described above.

Explanatory drawing showing the outline of a fire alarm system according to the present invention Block diagram showing the functional configuration of the fire receiver Explanatory diagram showing a list of commands and data to be set in the control message Explanatory drawing showing an embodiment of a fire detector according to the present invention for detecting heat, smoke and CO FIG. 4 is a block diagram showing a sensor circuit in the embodiment of FIG. Time chart showing the display control of the alarm display lamp corresponding to the test alarm by detecting smoke density, heat temperature, and CO concentration Explanatory diagram showing the outline of the walk test mode in the fire alarm system Flow chart showing control operation of fire receiver Flow chart showing control operation of fire detector Flowchart showing a control operation following FIG. 9 is a flowchart illustrating a control operation of a fire receiver according to another embodiment.

[Overview of fire alarm system]
FIG. 1 is an explanatory diagram schematically showing a fire alarm system according to the present invention. As shown in FIG. 1, the fire notification system includes a fire receiver 10 and a plurality of fire detectors 12. A transmission path 16 is drawn from the fire receiver 10 toward a security area of the facility, and a plurality of fire detectors 12 are connected to the transmission path 16.

  A unique address is set in the fire detector 12. For example, a maximum of 128 addresses can be set for one line of the transmission line 16, whereby a maximum of 128 fire detectors 12 can be connected to the transmission line 16. The maximum number of addresses per line of the transmission line 16 may be increased to 256 addresses or 512 addresses as necessary. When the number of fire detectors 12 installed in the alert area exceeds the maximum number of addresses of the transmission line 16, the number of the transmission lines 16 is increased.

  When the fire detector 12 detects, for example, smoke concentration, heat temperature, and CO concentration, which are a plurality of fire factors due to a fire, the fire detector 12 transmits a corresponding telegram to the fire receiver 10. When receiving the alarm message from the fire detector 12, the fire receiver 10 outputs a fire alarm and displays the alarm location based on the detector address.

  The monitoring control in the normal mode by the fire receiver 10 is, for example, as follows. The fire receiver 10 transmits a batch A / D conversion message designating a common address of all the fire detectors 12 at, for example, a one-second cycle, and all the fire detectors 12 determine the smoke concentration, the heat temperature, and the CO concentration. The detection signal of the fire element is A / D converted and stored in the memory, and then a polling message in which the address of the fire detector 12 is sequentially specified is transmitted. Each data of the concentration, the heat temperature and the CO concentration or the alert status of each fire element is transmitted by a response message to the fire receiver 10 to perform predetermined processing.

  The fire detector 12 detects a fire alarm when any of the smoke density, the heat temperature, and the CO density exceeds the corresponding threshold, and transmits a fire interrupt message to the fire receiver 10. In addition, when a fire detector set to the test mode by a message from the fire receiver 10 issues a test report with a test jig, a test report message corresponding to the components of smoke density and heat temperature is fired. Transmit to receiver 10. It should be noted that a sensor that determines that a fire has occurred when the smoke concentration or heat temperature exceeds a predetermined threshold value and the CO concentration exceeds the predetermined concentration may be used. A test notification can be issued for each detection element of the detection unit and the CO concentration detection unit, and a test notification signal corresponding to the detection element is transmitted to the fire receiver 10 when any detection output exceeds a threshold. Can be. Upon receiving the fire interrupt message, the fire receiver 10 transmits a group search message designating a group address using, for example, upper bits excluding the lower 4 bits of the sensor address, and searches for a fire alarm group. The search message specifying the address is transmitted in order, the address of the fire sensor that caused the fire interrupt is specified, and the fire occurrence location is displayed.

  The fire alarm system performs regular inspections, and among these inspection items, there is an item in which an inspector uses a test jig to perform an alarm test of the fire detector 12 installed in the alert area. Also known as test mode.

  In the fire alarm system of the present invention, when performing an inspection in the walk test mode, first, the fire detector 12 is set to the test mode by operating the fire receiver 10.

  In the fire alarm system of FIG. 1, a plurality of fire detectors 12, for example, 128 fire detectors 12 are connected to a transmission line 16, and a test mode is set for all the fire detectors 12 by the fire receiver 10. In this state, when the inspector used a test jig to perform an alarm test by detecting smoke concentration, an alarm test by detecting heat temperature, and an alarm test by detecting CO concentration, Correspondingly, the display of the alarm indicator is controlled in a different manner.

  For this reason, the inspector can easily know which of the smoke concentration, heat temperature and CO concentration is the test alert by looking at the display accompanying the test alert on the alert indicator light, It is not necessary to confirm the type of the test report by contacting the side, and it is possible to continuously perform the report test in the walk test mode of all the fire detectors 12 for which the test mode is set.

[Fire receiver]
FIG. 2 is a block diagram showing a functional configuration of the fire receiver. As shown in FIG. 2, the fire receiver 10 includes a reception control unit 18, and a transmission unit 20, a display unit 22, an operation unit 24, an alarm unit 26, and a notification unit 28 are provided for the reception control unit 18. .

  The reception control unit 18 is a function realized by, for example, executing a program, and uses a CPU, a memory, a one-chip processor having various input / output ports, and the like as hardware.

  When the fire control operation by the operation unit 24 is detected, the reception control unit 18 sets the receiver test mode to itself and specifies a test start message without address designation or a common address common to all the fire sensors 12. The transmission of the test start message to the transmission unit 20 is performed by controlling the transmission unit 20, thereby setting the fire detector 12 to the fire detector 12 connected to the transmission line 16.

  In addition, when receiving the test report message from the fire detector 12 in which the sensor test mode is set, the reception control unit 18 determines the type of report of the smoke, heat, or CO contained in the test report message. In addition to displaying the notification address, control is performed to transmit the lighting control message to the fire detector 12 that has transmitted the test notification message.

  In addition, every time a test report message is received from the new fire sensor 12, the reception control unit 18 determines the number N of the fire sensors 12 that are controlling the report indicator lamp 30 by the test report up to that time. When the counted number N reaches a predetermined threshold value Nth, the oldest fire detector 12 that is performing the emission control of the alarm indicator 30 is specified and a light-off control message is transmitted, and the alarm indicator light is transmitted. The control for stopping the lighting control of 30 is performed to ensure the stability of power supply to the system. Here, the threshold number Nth of fire detectors that have issued a test for transmitting the light-off control message is a predetermined number determined by the allowable range of the power supply capacity of the fire receiver 10.

Further, as another embodiment of the extinguishing control for the fire detector 12, the reception control unit 18 generates a warning display lamp by a previous test report every time a test report message is received from a new fire detector 12. A fire extinguishing control message is transmitted by designating the fire detector 12 that is controlling the lighting of the fire extinguisher 30 to stop the lighting control of the alarm indicator 30.

  In addition, when the reception control unit 18 detects a test end operation by the operation unit 24, the reception control unit 18 transmits a test end message to all the fire detectors 12 and performs control to release the setting of the receiver test mode.

  Here, the control message transmitted from the fire receiver 10 to the fire detector 12 has a format including a command, an address, data, and a checksum, and includes, for example, a test start message, a test end message, a lighting control message, and a lighting control message. The commands and data to be set are as shown in the list of FIG. 3, for example.

  In FIG. 3, for example, a test command is a command code (17h), and becomes a test start command by combining start data (81h) as data. When the end data (80h) is combined, it becomes a test end command. Here, h indicates a binary 4-bit hexadecimal code. The values of the command code and the data are merely examples, and appropriate values are set as needed.

[Fire detector]
(Structure of fire detector)
FIG. 4 is an explanatory view showing an embodiment of the detector for detecting smoke, heat and CO according to the present invention. FIG. 4 (A) is a perspective view showing a state of attachment to a ceiling surface viewed from below. 4 (B) is a side view, and FIG. 4 (C) is a plan view as viewed from below.

  As shown in FIG. 4, the fire detector 12 includes a sensor main body housed inside and a cover 32 arranged outside the main body. The cover 32 forms a chamber storage section 34 downward from the center of the substantially cylindrical base side, and a plurality of smoke inlets 36 are opened around the chamber storage section 34. At two locations on the side surface of the cover 32 on the mounting side, alarm indicator lamps 30 are provided. The alarm display lamp 30 is provided with, for example, a two-color LED that emits red and green light, and flashes green in response to polling from the fire receiver 10 and flashes red in response to a fire alarm in a normal state.

  A CO sensor storage part 38 is formed in a part of the cover 32 outside the chamber storage part 34, and inside the CO sensor storage part 38, as shown by a dotted line in FIG. A CO sensor 74 is incorporated.

  An opening hole 40 is formed in the surface of the cover 32 of the CO sensor storage section 38, and the opening hole 40 takes in the CO gas flowing with the smoke by the hot air flow accompanying the fire into the internal CO sensor 74.

  A scattered light type smoke detector is housed inside the chamber housing part 34, and scattered light due to smoke flowing from the smoke inlet 36 of light from the light emitting element is detected by the light receiving element to generate a smoke density detection signal. I'm trying to get.

  A temperature sensor 70 is disposed between the smoke inlet 36 formed around the chamber housing 34 and protruding downward. As the temperature sensor 70, an appropriate temperature sensor such as a thermistor or a semiconductor type temperature sensor can be used.

(Sensor circuit section)
FIG. 5 is a block diagram showing a sensor circuit unit in the embodiment of FIG. As shown in FIG. 5, the sensor circuit section has an S terminal and an SC terminal, to which a transmission line (power / signal line) drawn from the fire receiver is connected.

  Following the S and SC terminals, a noise absorbing unit 50 is provided to absorb and remove surges, noises, and the like generated in the sensor lines.

  Subsequently, a constant voltage circuit section 52 is provided, which converts a power supply voltage supplied by the transmission line into a predetermined power supply voltage and outputs the same. The power supply voltage from the constant voltage circuit unit 52 is supplied to the light emitting unit 54. The power supply voltage of the constant voltage circuit unit 52 is converted into a lower constant voltage by the constant voltage circuit unit 60, and the light receiving unit 56, the light receiving amplifier 58, the temperature sensor 70, the amplifier 72, the sensor control unit 62, the electrochemical type Power is supplied to the CO sensor 74 and the amplification unit 64.

  The light emitting unit 54 drives a light emitting element such as an LED intermittently to emit light. The light receiving unit 56 outputs a light receiving signal from a light receiving element such as a photodiode, amplifies a weak light receiving signal by a light receiving amplifying unit 58, and outputs a smoke detection signal E1 corresponding to the smoke density.

  As the sensor control unit 62, a processor known as a one-chip CPU is used, and includes a CPU, a RAM, a ROM, an A / D conversion port, and various input / output ports.

  The CO sensor 74 is, for example, a three-electrode electrochemical CO sensor. The sensor is filled with an electrolyte solution that comes into contact with the outside air, immersed in the electrolyte solution, and the working electrode, the counter electrode, and the reference electrode are spaced apart.

  When a CO gas comes into contact with the electrolyte solution of the CO sensor 74 from the outside, a current accompanying the oxidizing action of the CO gas flows from the working electrode near the working electrode. The current flowing from the working electrode is a current proportional to the gas concentration of the CO gas that has contacted the CO sensor 74. An amplifying unit 64 is connected to the working electrode, and the voltage input proportional to the current input from the working electrode is inverted and amplified, so that the steady-state voltage when the CO gas concentration is almost 0 ppm increases according to the gas concentration. It outputs the CO detection signal E2.

  The detection signal from the temperature sensor 70 is amplified by the amplifier 72, and outputs a temperature detection signal E3 corresponding to the heat temperature.

  The sensor control unit 62 converts the smoke detection signal E1 from the light receiving / amplifying unit 58 into smoke data by the AD conversion port, converts the CO gas detection signal E2 from the amplifying unit 64 into CO data, and further converts the signal to the amplifying unit 72. Is converted into temperature data.

  The sensor control unit 62 is a function realized by execution of a program by the CPU. In a normal monitoring state, a fire is started according to a predetermined fire judgment procedure based on smoke data, CO data, and temperature data read from the AD conversion port. Information. Further, each time the polling message is received from the fire receiver 10, the sensor control unit 62 causes the two-color LED provided on the alarm indicator 30 to blink green.

  When the sensor control unit 62 sets the sensor test mode according to the instruction from the fire receiver 10, the sensor control unit 62 performs a predetermined test control accompanying the test notification.

  On the output side of the sensor control unit 62, a transmission unit 66 is provided. The transmission unit 66 is connected to the output side of the noise absorption unit 50, and transmits and receives various electronic messages to and from the fire receiver 10 via a transmission line by serial transmission.

  In addition, a warning indicator lamp 30 is provided on the output side of the sensor control unit 62 via a display drive unit 80. The alarm indicator light 30 is driven to be lit based on the determination of a fire alarm by the sensor controller 62. Further, when the sensor test mode is set in the sensor control unit 62, display control is performed in a different manner depending on the content of the alarm, based on detection of a test alarm by smoke, heat, or CO.

(Test control of fire detector)
The sensor control unit 62 sets the sensor test mode when the test start message is received from the fire receiver 10 via the transmission unit 66, and stops the blinking of the green of the alarm indicator 30 in the normal monitoring mode. When an alarm test is performed by detecting a smoke concentration, a heat temperature, or a CO concentration using a test jig in a setting state of the sensor test mode, a test report message is instructed to the transmission unit 66. Control to transmit to the fire receiver 10.

  Further, when the lighting control message is received from the fire receiver 10 via the transmission unit 66 via the transmission unit 66, the sensor control unit 62 indicates a test alert based on smoke concentration detection, heat temperature detection, or CO concentration detection. The display of the alarm indicator 30 is controlled in a different manner.

  In addition, the sensor control unit 62 performs control to release the sensor test mode and return to the normal monitoring state when receiving a test end message from the fire receiver 10 via the transmission unit 66.

(Test alert display of alert indicator)
FIG. 6 is a time chart showing the display control of the alarm indicator corresponding to the test alarm by detecting the smoke density, heat temperature and CO concentration of the fire detector. FIG. 6 (A) shows the smoke detection alarm. The display is shown, FIG. 6 (B) shows an alert display of heat detection, and FIG. 6 (C) shows an alert display of CO detection.

  In the test alarm display by the smoke detection in FIG. 6A, the alarm indicator lamp 30 flashes once with the flashing period T1 for the lighting period T3 and then turns off, and then the predetermined pause period T2 is opened. Repeat this.

  In the test alert display of the heat detection in FIG. 6B, the alert indicator lamp 30 is turned on and off twice for a lighting period T3 twice in a blink cycle T1, and then blinks twice, followed by a predetermined time. The pause cycle T2 is opened, and this is repeated.

  Further, in the test alert display of the CO detection of FIG. 6C, the alert indicator lamp 30 is turned on for the lighting time T3 in the flashing cycle T1, and then turned off three times, and then flashes three times, and then flashes three times. The pause cycle T2 is opened, and this is repeated.

  Here, the blink cycle T1 is, for example, 1 second, the pause cycle T2 is, for example, 3 seconds, and the light emission time T3 is, for example, 10 milliseconds.

  Due to such a change in the number of blinks corresponding to the test report of the report indicator lamp 30, the inspector who is performing the report test using the test jig, once blinks, gives the test report by detecting the smoke density. If it flashes twice, the test is issued by detecting the heat temperature. If it flashes three times, it can be easily and easily grasped that the test is issued by detecting the CO concentration, without contacting the fire receiver 10 side. A fire test of the fire detector 12 can be performed.

[Fire detector inspection work in walk test mode]
FIG. 7 is an explanatory diagram showing an outline of an inspection operation in the walk test mode in the fire alarm system, FIG. 8 is a flowchart showing a control operation of a fire receiver, and FIG. 9 is a flowchart showing a control operation of a fire detector. .

(Overview of inspection work)
As shown in FIG. 7A, when checking the fire detector 12 in the walk test mode, first, the fire receiver 10 is operated to set the detector test mode in all the fire detectors 12, and in this state, The inspector 82 sets the test jig 84 on the appropriate fire detector 12, and operates the test jig 84 to perform a test for heating the fire detector 12, a test for flowing in smoke, and a test for flowing in CO gas. Do.

  When the fire detector 12 issues a test alert by detecting any of smoke, heat, and CO for a test operation using such a test jig 84, an alert indicator light provided on the fire detector 12 When 30 blinks periodically, once it blinks, it is a test report by detecting smoke density, when it blinks twice, it is a test report by detecting heat temperature, and when it blinks three times, it is a test report by detecting CO concentration. I understand.

  When the first inspection of the fire detector 12 is completed in this way, as shown in FIG. 7B, the test is moved to the next fire detector 12, and the test jig 84 is set in the same manner to perform the test operation. .

  Here, the alarm indicator lamps 30 of the fire detectors 12 that have performed the test indicate the alarm indicators of all the fire detectors 12 that have been tested until the number N of fire sensors 12 tested reaches the predetermined number Nth. When the lamp 30 simultaneously emits light and the next fire alarm 12 is fired, the light emission in the fire detector 12 that emits the oldest light stops.

[Test control associated with inspection work]
FIG. 8 is a flowchart showing a control operation of the fire receiver, and FIG. 9 is a flowchart showing a control operation of the fire detector. Referring to FIGS. 8 and 9, the fire alarm system performs inspection work in the walk test mode. The control operations of the accompanying fire receiver and fire detector will be described as follows.

(Control of fire receiver)
As shown in FIG. 8, the reception control unit 18 of the fire receiver 10 monitors the fire in the normal mode in step S1, and when the inspector performs a test operation with the fire receiver 10 prior to the inspection work, This is determined in step S2, the fire receiver 10 sets the test mode in step S3, and subsequently transmits a test start message to all fire detectors 12 in step S4.

  In this state, assuming that the inspector goes to the place where the fire detector 12 is installed and performs an alarm test using a test jig, a test report message from the fire detector 12 is received in step S5, and in step S6. Displays smoke, heat or CO test alerts.

  Subsequently, in step S7, when it is determined from the sensor address contained in the test report message that the fire report is a new test report of the fire detector 12, the process proceeds to step S8, and the lighting control that designates the test reporter address is performed. The electronic message is transmitted to the fire detector 12.

  Subsequently, the process proceeds to step S10, in which the number N of the sensors that are simultaneously controlled to turn on the alarm indicator lamp 30 is counted by an alarm test. Step S11 is skipped, but if the number N of sensors under simultaneous lighting control has reached the threshold value Nth, a light-off control message specifying the address of the oldest fire sensor under lighting control is transmitted in step S11.

Subsequently, the processing from step S5 is repeated until a test end operation is detected in step S12, and when a test end operation is detected in step S12, the process proceeds to step S13, where a test end message is transmitted to all fire sensors. In step S14, the test mode is canceled, and the process returns to the normal mode fire monitoring in step S1.

(Control of fire detector)
As shown in FIG. 9, the sensor control unit 62 of the fire detector 12 monitors smoke, heat, and CO in the normal mode in step S21. During the monitoring in the normal mode, when the reception of the test start message transmitted by the fire receiver 10 is detected in step S22, the test mode is set in step S23.

  Assuming that the inspector goes to the installation location of the fire detector 12 in the test mode setting state and performs an alert test using a test jig, the sensor control unit 62 of the fire detector 12 issues a test alert in step S24. Is detected, and a test report message corresponding to the fire element of smoke, heat, or CO for which the test report was performed in step S25 is transmitted to the fire receiver 10.

  Subsequently, in step S26, when the reception of the lighting control message from the fire receiver 10 is detected, the process proceeds to step S27. When the smoke test alert is determined in step S27, the process proceeds to step S28, in which the alert indicator lamp 30 blinks once. Is performed periodically to display a test alert by smoke detection.

  Further, if the heat test alert is determined in step S29, the process proceeds to step S30 to perform display control of periodically repeating the blinking of the alert indicator lamp 30 twice to display the test alert by heat detection. If it is determined in step S31 that the CO test has been issued, the process proceeds to step S32, in which display control is performed to periodically repeat the blinking of the alarm display lamp 30 three times, and a test alarm based on CO detection is displayed.

  Subsequently, when the next test report is detected in step S33 of FIG. 10, a test report message is transmitted in step S34. In this case, since the lighting control message has already been received in step S26, the process proceeds to step S35. On the other hand, if it is determined that the smoke test has been issued, the process proceeds to step S36 to perform display control in which the alarm display lamp 30 periodically repeats blinking once, and a test alert based on smoke detection is displayed.

  If it is determined in step S37 that the heat test has been issued, the process proceeds to step S38 to perform display control in which the alarm display lamp 30 periodically blinks twice, and a test alarm based on heat detection is displayed. If it is determined in step S39 that the CO test has been issued, the process proceeds to step S40 to perform display control in which the alarm indicator lamp 30 periodically blinks three times, and a test alarm based on CO detection is displayed.

  Subsequently, step S42 is skipped until the reception of the light-off control message is detected in step S41, and the process proceeds to step S43. The process from step S33 is repeated until the reception of the test end message is detected in step S43.

  When the reception of the light-off control message is detected in step S41, the process proceeds to step S42, and the lighting control of the alarm indicator 30 is stopped. When the reception of the test end message is detected in step S43, the process proceeds to step S44 to cancel the test mode, and returns to the normal mode of monitoring of smoke, heat and CO in step S21.

(Another embodiment of fire receiver control)
FIG. 11 is a flowchart showing a control operation according to another embodiment of the fire receiver. In FIG. 11, steps S1 to S8 and steps S12 to S14 are the same as the control operation in FIG. 8, but FIG. 11 is characterized in that the processing in step S81 is performed instead of steps S9 to S11 in FIG. .

  That is, the control operation of FIG. 11 detects the fire test of a new fire sensor in step S7, specifies the fire sensor that has issued the test in step S8, transmits the lighting control message, and then in step S81. Control to send a light-off control message by designating the fire detector that issued the test last time.

  For this reason, when the fire test of a plurality of fire sensors is continuously performed, as shown in FIG. 7B, the fire test of the second fire sensor is performed, as shown in FIG. 7B. The flashing of the alarm display lamp 30 of the fire detector 12 which first issued the test alarm shown in (1) is stopped by the extinguishing control message transmitted from the fire receiver 10. When the fire test of a plurality of fire detectors 12 is continuously performed by this, only the fire indicator lamp 30 of the fire detector 12 that is currently performing the test fire is the number of times corresponding to the fire element that fired the test. Will blink.

[Modification of the present invention]
In the above embodiment, a fire sensor test that detects and emits smoke density, heat temperature, and CO concentration as a plurality of fire elements is taken as an example, but emits by detecting smoke density and CO concentration. As for the fire detector, the alarm display lamp may periodically flash once when a test is issued by smoke detection, and the alarm display lamp may periodically flash twice when a test alarm is generated by CO detection. .

  Further, in the above embodiment, the fire alarm test is issued in the order of smoke, heat and CO, but this order may be arbitrary, and all fire elements of smoke, heat and CO may be fired. The fire test of some fire elements may be performed without performing the fire test.

  In addition, as the display of the test alert by detecting smoke, heat, and CO, in addition to changing the number of periodic blinks of the alert indicator, the lighting time is changed, and the display color of the LED is changed. Any display mode can be adopted as appropriate.

  In the fire detector fire test above, all fire detectors connected to the transmission line were specified and the fire test was conducted.However, the security area where fire detectors were installed was divided into multiple zones. Alternatively, the fire test may be performed by designating a fire detector in each zone, or the fire test may be performed by designating in units of an arbitrary number of fire detectors.

  In addition, the fire detector is not limited to the three types of smoke, heat, and CO, and may be any fire detector that detects many types of fire elements.

  Further, the present invention includes appropriate modifications without impairing the objects and advantages thereof, and is not limited by the numerical values shown in the above embodiments.

10: Fire receiver 12: Fire detector 16: Transmission line 18: Reception control unit 20, 66: Transmission unit 22: Display unit 24: Operation unit 26: Alarm unit 28: Notification unit 30: Alarm indicator light 32: Cover 54: Light emitting unit 56: Light receiving unit 62: Sensor control unit 70: Temperature sensor 74: CO sensor 80: Display drive unit 84: Test jig

Claims (2)

A fire detector for detecting a plurality of fire elements including at least two kinds of heat temperature, smoke concentration and gas concentration by fire;
A fire receiver connected to the fire detector,
In the fire alarm system equipped with
The fire detector changes the alarm display lamp one or more times at a predetermined lighting time and a predetermined blinking cycle according to the type of test alarm by detecting the heat temperature, detecting the smoke concentration, or detecting the gas concentration. A fire alarm system characterized by repeating the blinking at predetermined pause intervals after blinking a number of times.
A fire detector for detecting a plurality of fire elements including at least two kinds of heat temperature, smoke concentration and gas concentration by fire;
A fire receiver connected to the fire detector,
In the test method of the fire alarm system equipped with
The fire detector changes the alarm display lamp one or more times at a predetermined lighting time and a predetermined blinking cycle according to the type of test alarm by detecting the heat temperature, detecting the smoke concentration, or detecting the gas concentration. A method for testing a fire alarm system, comprising: repeating the blinking after a predetermined pause period after blinking a number of times.

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