JP6340679B2 - Alarm - Google Patents

Description

  According to the present invention, a detection unit configured to detect an external environment and a warning unit including a warning notification unit configured to notify a warning based on the detected change in the external environment are connected by wire. It relates to the alarm.

  Conventionally, as an alarm device for detecting leakage of a gas to be detected, which is an example of an abnormality in the external environment, when a gas detector is used to detect leakage of a gas to be detected, and a detection unit having a gas sensor configured separately from each other There are known separate alarm devices in which a warning buzzer that rings, a speaker that notifies a voice message, and a warning unit having a warning notification unit such as a warning lamp that lights in red are connected by wire. The detection unit of such a separate alarm device is installed near the floor if the detection target of the gas sensor is LP gas, or near the ceiling if the detection target is city gas. It is installed at the place. On the other hand, the alarm unit is installed at a predetermined position where it is easy to confirm alarm notification such as sounding of an alarm buzzer, notification of a voice message, lighting of an alarm lamp, and the like.

  The alarm unit supplies a predetermined control voltage obtained by stepping down or boosting the power supply voltage supplied from the external power supply by a conversion circuit provided inside to the detection unit via a wire, and operates the gas sensor of the detection unit In addition, the gas sensor is configured to monitor the voltage level of the gas sensor and determine that the gas sensor has detected the leakage of the gas to be detected when it is detected that the voltage level has continued to exceed a predetermined alarm threshold.

  Note that the above-described alarm device, which is a conventional technique in the present invention, is a general technique, and therefore, prior art documents such as patent documents are not shown.

  By the way, a detection part is installed in a severe environment compared with the alarm part which can be installed far from the location which can monitor the leak of the gas of the detection object, ie, the location where gas leak can occur. If the detector breaks down, the alarm buzzer may sound like when a gas leak is detected, even though there is actually no gas leak. There is a risk that gas detection may not be performed normally. Avoiding such a risk leads to an improvement in the reliability of the detection unit, that is, an improvement in the reliability of the alarm device.

  The present invention has been made in view of the above circumstances, and when there is a possibility of abnormality of the detection unit, a highly reliable alarm device capable of stopping detection of leakage of a gas to be detected by the detection unit The purpose is to provide.

A first characteristic configuration of the alarm device according to the present invention includes a detection unit configured to detect an external environment, and a warning notification unit configured to notify a warning based on the detected change in the external environment, each configured separately. The alarm unit is connected to the alarm unit by wire, and the detection unit includes a first control unit that controls the detection unit, and the first control unit is connected to the alarm unit via the wire. The control unit is configured to start / stop control of the detection unit in response to supply / stop of a predetermined control voltage, and the alarm unit controls the control to the first control unit via the wire. A second control unit for controlling supply / stop of voltage, wherein the detection unit and the alarm unit are configured to detect the communication of the detection unit side device information to the alarm unit via the wire; and Communicates device information on the alarm side to the detection unit via the wire Configured to perform alternately and distribution unit communication, the second control unit determines that after transmitting the alarm unit communication abnormality the detection section communicate with the detecting portion does not receive the predetermined time has occurred and, there is a supply of the control voltage to the first control unit in that it is configured to stop.

When the alarm unit does not receive the detection unit communication, it is considered that some abnormality such as runaway has occurred in the detection unit or the first control unit. If the alarm unit does not receive the detection unit communication for a predetermined time after transmitting the alarm unit communication, it is determined that an abnormality has occurred in the detection unit, the supply of the control voltage to the first control unit is stopped, and the first control is performed. The control of the detection unit by the unit can be stopped. Thereby, the abnormal gas detection by the detection unit such as the runaway of the first control unit can be stopped. Moreover, the 2nd control part can judge the possibility of abnormality of a detection part, without providing the structure which monitors a detection part in a 1st control part. The configuration of the alarm unit and the detection unit, which is relatively easy to cause a failure, can be simplified and can be manufactured at low cost.

The second characteristic feature, in addition to the Ichitoku symptoms construction described above, the second control unit, after stopping the supply of the control voltage to the first control unit, again the control voltage when a predetermined time has elapsed The point is to start supplying.

  When the abnormality of the detection unit is simply the runaway of the first control unit, the abnormality can often be solved by restarting the first control unit. When there is a possibility of abnormality of the detection unit, the second control unit automatically restarts power supply after that even if it stops monitoring the leakage of the gas to be detected, Monitoring of gas leaks can begin.

  As described above, according to the present invention, it is possible to provide a highly reliable alarm device capable of stopping detection of leakage of a gas to be detected by a detection unit when there is a possibility of abnormality of the detection unit. Can now.

Illustration of the alarm device according to the present invention Explanatory drawing of each functional block of alarm Explanatory diagram of the communication sequence between the detector and alarm unit Explanatory diagram of the communication sequence between the detector and alarm unit

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
As shown in FIG. 1, the alarm device 1 according to the present invention includes a detection unit 10 configured to detect an external environment with a built-in gas sensor 11 configured separately, and an abnormality in the external environment detected by the detection unit 10. The alarm part 20 provided with the alarm alerting part 21 to perform is provided. The detection unit 10 and the alarm unit 20 are electrically connected by a communication line 31 as a wire 30 and a power supply line 33, and the gas sensor 11 of the detection unit 10 is supplied with a control voltage supplied from the alarm unit 20 via the power supply line 33. When the gas sensor 11 detects the gas to be detected, the detection unit 10 transmits the detection signal to the alarm unit 20 via the communication line 31, and the alarm unit 20 sounds the alarm buzzer as the alarm notification unit 21. In addition, it is configured to notify the surroundings of leakage of gas to be detected by notification of a voice message by a speaker, lighting of an alarm lamp, or the like. In FIG. 1, for convenience of understanding, the detection unit 10 and the alarm unit 20 are shown side by side for convenience, but the detection unit 10 is located near the floor if the detection target of the gas sensor is LP gas. Install it in the vicinity of the ceiling if it is city gas. Install it in an appropriate location according to the gas to be detected. On the other hand, the alarm unit 20 is installed at a predetermined position where the alarm notification by the alarm notification unit 21 can be easily confirmed.

  First, the detection unit 10 will be described. The detection unit 10 includes an operation confirmation lamp serving as a first notification unit 12 at a position that can be visually recognized from the outside on a casing that can be attached to an indoor or outdoor wall surface, and the gas sensor 11 and the detection unit 10 inside the casing. A detection unit control unit 100 that controls the operation, and a detection unit power supply unit 15 that is connected by a power supply line 33 as the alarm unit 20 and the wire 30 and receives a control voltage supplied from the alarm unit 20 are provided.

  As the gas sensor 11, a semiconductor type sensor, a catalytic combustion type, an electrochemical type, a solid electrolyte type, an infrared type sensor or the like capable of detecting leakage of LP gas or city gas is used. In the present embodiment, a case where the alarm device 1 is installed in a kitchen and the detection target is LP gas will be described as an example. Therefore, the detection unit 10 is installed on a wall surface at a predetermined position near the floor surface.

  As shown in FIG. 2, the detection unit control unit 100 includes an arithmetic processing unit 111 that processes an input signal from the gas sensor 11 and a first notification unit using a microcomputer or a memory that stores a program executed by the microcomputer. A first notification control unit 112 that controls notification by the first communication unit 131, a first communication unit 131 that is connected by a communication line 31 as a wired 30 to communicate bidirectionally with the alarm unit 20, and a first communication unit 131 that controls the first communication unit 131. One communication control unit 132, a detection unit power supply control unit 133 that performs predetermined control based on the predetermined voltage supplied to the detection unit power supply unit 15, device information on the detection unit 10 side, and an alarm received by alarm unit communication described later Each functional block such as the first storage unit 101 that stores device information on the unit 20 side is configured. In this embodiment, the detection part control part 100 comprises the 1st control part with which the detection part 10 was equipped and which controls the detection part 10. FIG.

  Further, in the present embodiment, the wire 30 is used for electrically connecting the detection unit 10 and the alarm unit 20 to communicate with each other, and for supplying a predetermined control voltage from the alarm unit 20 to the detection unit 10. The power supply line 33 is used. The predetermined control voltage supplied from the alarm unit 20 to the detection unit 10 may be superposed on a signal communicated bidirectionally via the communication line 31, and in this case, the detection unit control unit 100 may be superposed. It is sufficient to provide a filter circuit for extracting a control voltage supplied superimposed on the communication line 31.

  The detection unit power supply control unit 133 starts and executes the control of the detection unit 10 by the control voltage supplied to the detection unit power supply unit 15 through the power supply line 33, and when the supply of the control voltage is stopped, the detection unit 10 It is configured to stop the control.

  The arithmetic processing unit 111 monitors the voltage level of the gas sensor 11 and determines that the gas sensor 11 has detected a leak of LP gas when the voltage level continues to be detected above a predetermined alarm threshold. The arithmetic processing unit 111 calculates the LP gas concentration for each predetermined period from the voltage level of the gas sensor 11, and the calculated LP gas concentration is continuously detected for a predetermined time for a predetermined alarm level threshold or more. In some cases, it may be determined that LP gas is leaked.

  The first notification control unit 112 detects abnormality detection information such as LP gas leakage by the gas sensor 11, device information on the detection unit 10 side, device information on the alarm unit 20 side transmitted from the alarm unit 20 described later, Based on a signal from the operation processing unit 223 provided in the unit 20, notification by the first notification unit 12 is controlled.

  The operation check lamp as the first notification unit 12 is configured to notify the normal state of the alarm device 1, the abnormality detection such as the leakage of LP gas, the state of failure, etc. in a predetermined manner. The operation confirmation lamp is configured to include green and red LEDs. For example, if the alarm device 1 is in a normal state, it is lit in green, and if it is in an abnormality detection state such as LP gas leakage, it is lit in red. If it is in the state, it can be easily identified by changing the light emission pattern such as lighting, blinking, and extinguishing and the combination of the light emission colors such as green and red according to the state.

  The first communication unit 131 is electrically connected to a second communication unit 231 of the alarm unit 20 to be described later by a communication line 31 that is a wired 30 and is detected by serial communication using a 500 bps asynchronous process realized by UART. The device information on the 10th side is transmitted to the second communication unit 231 and the device information on the alarm unit 20 side is received from the second communication unit 231. This communication of device information on the detection unit 10 side from the first communication unit 131 to the second communication unit 231 is referred to as detection unit communication. Note that the detection unit communication is not limited to the configuration that is performed by serial communication using the asynchronous method, but includes a clock line that transmits a clock signal in addition to the communication line 31, and is configured to be performed by synchronous serial communication. Also good.

  The device information on the detection unit 10 side starts with, for example, several bits of data including a gas alarm flag that conveys detection of LP gas leakage to the alarm unit 20 and a detection unit failure flag that conveys a failure of the detection unit 10. It consists of a packet of several bytes consisting of data with bits, parity bits, and stop bits added, and data such as other parameters.

  The first communication control unit 132 is configured to execute detection unit communication at a predetermined timing. Details of the communication timing of the detection unit communication will be described later.

  The first storage unit 101 is configured to detect leakage of LP gas constituting the LP gas concentration value calculated by the arithmetic processing unit 111 based on the output value of the gas sensor 11 and / or the output value and the device information on the detection unit 10 side. The determination result is stored. Further, device information on the detection unit 10 side transmitted to the alarm unit 20 and device information on the alarm unit 20 side received by alarm unit communication described later are also stored. However, when an error such as a parity check error, a communication error, or a checksum error is recognized in the device information to be stored, the device information may not be stored.

  Next, the alarm unit 20 will be described. As shown in FIG. 1, the alarm unit 20 is an operation unit 23 that has a built-in operation confirmation lamp as a second notification unit 22 at a position that can be visually recognized and operated from the outside on a casing that can be attached to an indoor or outdoor wall surface. The alarm notification unit 21, the alarm unit control unit 200 for controlling the operation of the alarm unit 20, and a power supply voltage supplied from an external power source by a conversion circuit (not shown) are provided in the casing. The alarm unit power supply unit 25 transmits power to a detection unit 10 connected to each unit of the alarm unit 20 and a power supply line 33 as a wire 30 by a predetermined control voltage obtained by stepping down or boosting.

  The alarm notification unit 21 is configured by a speaker, and when the detection unit 10 detects a leak of LP gas as an abnormality in the external environment, a synthesized sound such as an alarm sound (synthetic sound signal, for example, “gas is not leaking”) Alternatively, it is configured to notify the leakage of LP gas by a sound by an electronic sound signal, for example, an electronic sound such as “pip pip pip”, or a combination thereof.

  As shown in FIG. 2, the alarm control unit 200 includes an alarm notification control unit 221 that controls alarm notification by the alarm notification unit 21 using a microcomputer, a memory that stores a program executed by the microcomputer, and the like. To communicate bidirectionally with the operation processing unit 223 that processes the input signal from the unit 23, the second notification control unit 222 that controls notification by the second notification unit 22 based on the signal from the operation processing unit 223, and the detection unit 10. The second communication unit 231 connected to the communication line 31 as the wire 30, the second communication control unit 232 that controls the second communication unit 231, and the control voltage from the alarm unit power supply unit 25 to the detection unit power supply unit 15. The alarm unit power supply control unit 233 for controlling the start / stop of power transmission, the device information on the alarm unit 20 side, and the device information on the detection unit 10 side received by the detection unit communication are described. A function block, such as the second storage unit 201 is configured to. Therefore, in this embodiment, the alarm unit control unit 200 controls the supply / stop of the control voltage to the detection unit control unit 100 that is provided in the alarm unit 20 and is the first control unit via the wire 30. A second control unit is configured.

  The alarm notification control unit 221 performs alarm notification by the alarm notification unit 21 based on the gas alarm flag that conveys the detection of leakage of LP gas included in the detection unit communication received from the detection unit 10. Further, the alarm notification control unit 221 performs an operation corresponding to a predetermined operation such as a long press or a short press of the operation unit 23 in a state where an abnormality of the external environment such as leakage of LP gas to be detected is not detected by the gas sensor. Based on the signal from the processing unit 223, the inspection result as to whether or not each function of the alarm unit 20 is operating normally can be notified from the speaker as the alarm notification unit 21, for example, by sounding one phrase of an alarm sound. it can.

  The second notification control unit 222 includes device information on the detection unit 10 side, including abnormality detection information such as LP gas leakage by the gas sensor 11 transmitted from the detection unit 10, device information on the alarm unit 20 side, and the alarm unit 20. The second notification unit 22 is controlled on the basis of a signal from the operation processing unit 223 included in the control unit 223.

  The operation check lamp as the second notification unit 22 is configured to notify the normal state of the alarm device 1, abnormality detection such as LP gas leakage, and the like in a predetermined manner. The operation confirmation lamp is configured to include green and red LEDs. For example, if the alarm device 1 is in a normal state, it is lit in green, and if it is in an abnormality detection state such as LP gas leakage, it is lit in red. If it is in the state, it can be easily identified by changing the light emission pattern such as lighting, blinking, and extinguishing and the combination of the light emission colors such as green and red according to the state.

  The switch as the operation unit 23 is configured to open or close in response to an operation from the outside, and incorporates an operation confirmation lamp as the second notification unit 22 at a position that can be visually recognized from the outside. The operation processing unit 223 detects that the operator has performed a predetermined operation such as a long press or a short press on the operation unit 23, and executes a predetermined program set in advance accordingly. For example, according to the operation of the operation unit 23, an inspection operation for confirming whether or not the alarm device 1 operates normally is executed.

  The second notification control unit 222 performs an operation process corresponding to a predetermined operation such as a long press or a short press of the operation unit 23 in a state where an abnormality of the external environment such as leakage of LP gas to be detected is not detected by the gas sensor. Based on the signal from the unit 223, the inspection result as to whether or not each function of the alarm unit 20 is operating normally can be notified by turning on the operation confirmation lamp as the second notification unit 22.

  The operation processing unit 223 is connected to the second notification control unit 222 and the alarm notification control unit 221 and connected to the first notification control unit 112 via the second communication unit 231, the communication line 31, and the first communication unit 131. Based on the operation of the operation unit 23, the second notification control unit 222 and the alarm notification control unit 221 execute the notification of the state of the alarm device 1 by the second notification unit 22 and the alarm notification unit 21, and the first notification The control unit 112 is configured to cause the first notification unit 12 to notify the state of the alarm device 1.

  The second communication unit 231 is electrically connected to the first communication unit 131 through the communication line 31 that is the wired 30, and device information on the alarm unit 20 side is obtained by serial communication using a 500 bps asynchronous system realized by UART. While transmitting to the 1st communication part 131, it is comprised so that the apparatus information by the side of the detection part 10 may be received from the 1st communication part 131. FIG. This communication of device information on the alarm unit 20 side from the second communication unit 231 to the first communication unit 131 is referred to as alarm unit communication. Note that the alarm unit communication is not limited to the configuration that is performed by serial communication using the start-stop synchronization method, but includes a clock line that transmits a clock signal in addition to the communication line 31, and is configured to be performed by synchronous serial communication. Also good.

  The device information on the alarm unit 20 side includes, for example, an alarm unit failure flag that conveys a failure of the alarm unit 20, a confirmation function flag for confirmation of the first notification unit 12 of the detection unit 10, and the like. It consists of a packet of several bytes consisting of data with start bit, parity bit and stop bit added to the data and data such as other parameters.

  The second communication control unit 232 is configured to execute alarm unit communication at a predetermined timing. Details of the communication timing of the alarm unit communication will be described later.

  The second storage unit 201 also stores device information on the alarm unit 20 side transmitted to the detection unit 10 and device information on the detection unit 10 side received by detection unit communication. However, when an error such as a parity check error, a communication error, or a checksum error is recognized in the device information to be stored, the device information may not be stored.

Next, detection unit communication and alarm unit communication executed bi-directionally between the detection unit 10 and the alarm unit 20 will be described.
Since the detection unit communication and the alarm unit communication are executed by one communication line 31 connecting the first communication unit 131 and the second communication unit 231, when the detection unit communication and the alarm unit communication are executed simultaneously, Normal communication is not possible. Therefore, when the alarm device 1 is activated, the first communication control unit 132 first performs detection unit communication.

  As shown in FIG. 3, after the alarm device 1 is powered on, after a predetermined time, for example, 1 second has elapsed, the first communication control unit 132 first stores the device information on the detection unit 10 side in the first storage unit 101 and detects it. Department communication. When the second communication control unit 232 receives the detection unit communication, the second communication control unit 232 stores the detection unit communication in the second storage unit 201, and executes the alarm unit communication after elapse of a predetermined time, for example, 100 milliseconds after reception of the detection unit communication. When the first communication control unit 132 receives the alarm unit signal, the first communication control unit 132 stores the alarm unit signal in the first storage unit 101, and executes the detection unit communication after elapse of a predetermined time, for example, 100 milliseconds after reception of the alarm unit communication. As described above, the first communication control unit 132 and the second communication control unit 232 alternately execute the detection unit communication and the alarm unit communication at a predetermined timing, and monitor the leakage of the LP gas that is the detection target. Also monitor the state of each other.

  When the detection unit 10 detects a leak of LP gas, a gas alarm flag is set to notify the detection of the leak of LP gas in the device information on the detection unit 10 side transmitted by detection unit communication. When the gas alarm flag is set in the received detector communication, the alarm control unit 200 of the alarm unit 20 controls the alarm notification unit 221 so that “gas is not leaking”. The LP gas leakage is notified by a synthesized sound such as. At this time, the operation check lamps (the first notification unit 12 and the second notification unit 22) of the detection unit 10 and the alarm unit 20 are lit in red to visually notify the occurrence of LP gas leakage. You can also.

  The detection unit 10 and the alarm unit 20 perform their own operation check lamps (the first notification unit 12 or the second notification unit 22) when detecting their own failure while performing alternate communication of the detection unit communication and the alarm unit communication. Blinks in green and communicates its own fault to the other through detection unit communication and alarm unit communication. The alarm unit 20 that has received the detection unit communication and the detection unit 10 that has received the alarm unit communication have their own operation confirmation lamps (the first notification unit 12 or the second notification unit 22) based on the occurrence of the other failure. Flashes green. Depending on which device has failed, the light emission pattern of the operation confirmation lamp (the first notification unit 12 and the second notification unit 22) is changed in the period and intensity, or the speaker (alarm notification unit 21). ) From different synthesized sounds, such as “alarm unit failure” and “detection unit failure”, it becomes easy to confirm which device has failed.

  As shown in FIG. 4, when the detection unit 10 and the alarm unit 20 execute alternating communication of detection unit communication and alarm unit communication, the alarm unit 20 does not receive the detection unit communication from the detection unit 10. The second communication control unit 232 waits for reception of the detection unit communication until the timer provided therein is activated and the time is up.

  When the detection unit communication is received within a predetermined time set by the timer, for example, 180 seconds, the alarm unit communication is executed after 100 milliseconds have elapsed as described above. When a communication error is detected in which the detection unit communication is not normally received within 180 seconds set by the timer, the alarm unit 20 determines the abnormality of the detection unit 10 or the alarm unit 20, and notifies the failure state by the operation check lamp. To do. The time of 180 seconds is an example of a time in which the LP gas leakage cannot be monitored or notified due to a failure of the detection unit 10 or the alarm unit 20 and is not too short or too long.

  The detection unit 10 and the alarm unit 20 perform the first communication control unit 131 when the detection unit 10 does not receive the alarm unit communication from the alarm unit 20 while performing the alternating communication of the detection unit communication and the alarm unit communication. Keeps waiting for reception of the alarm unit communication until the internal timer is started and the time is up. At this time, the detection unit 10 may repeatedly execute detection unit communication based on device information on the detection unit 10 side transmitted last time every second. In addition to the case where the alarm unit communication is not normally transmitted due to the failure of the alarm unit 20, or the alarm unit communication cannot be normally received due to the failure of the detection unit 10, the detection unit communication transmitted last time due to the failure of the alarm unit 20 is This is because there is a possibility that the alarm unit communication from the alarm unit 20 may not be performed because the alarm unit 20 is not normally received.

  When the alarm unit communication is received within a predetermined time set by the timer, for example, 180 seconds, the detection unit communication is executed after 100 milliseconds have elapsed as described above. If a communication error in which the alarm unit communication is not normally received within 180 seconds set by the timer is repeated, the detection unit 10 determines the abnormality of the detection unit 10 or the alarm unit 20, and notifies the failure state by the operation check lamp. . The time of 180 seconds is an example of a time in which the LP gas leakage cannot be monitored or notified due to a failure of the detection unit or the alarm unit and is not too short or too long.

  As described above, when the alarm device 1 is powered on, the first communication control unit 132 first executes the first detection unit communication after 1 second has elapsed. The alarm unit 20 is set to have a waiting time of 10 seconds for abnormality determination based on the presence or absence of detection unit communication only immediately after the power is turned on. The time of 10 seconds is an example of a time that is not too short and not too long to determine whether or not the communication between the detection unit 10 and the alarm unit 20 is normally performed after the alarm device 1 is turned on. It is. In addition, the detection part 10 may repeatedly perform the detection part communication based on the apparatus information by the side of the detection part 10 transmitted for the first time after 1st detection part communication.

  In the alarm unit control unit 200, when the detection unit failure flag that indicates the failure of the detection unit 10 is set in the detection unit communication received from the detection unit 10 side, or the detection unit communication and the alarm unit communication with the detection unit 10 are normal. If the detection unit 10 is not executed, an abnormality occurs in the detection unit 10, for example, the detection unit control unit 100 may run out of control. Then, the supply of a predetermined control voltage to the detection unit power supply unit 133 of the detection unit 10 via the power supply line 33 as the wire 30 is temporarily stopped. As a result, detection of abnormal LP gas by the detection unit 10 such as runaway of the detection unit control unit 100 can be stopped. That is, according to the alarm device according to the present invention, it is possible to provide a highly reliable alarm device capable of stopping detection of a gas to be detected by the detection unit when there is a possibility of abnormality of the detection unit. Can now.

  The alarm unit control unit 200 restarts the detection unit control unit 100 of the detection unit 10 by stopping the supply of the control voltage to the detection unit 10 and starting the supply of the predetermined control voltage again after a predetermined time has elapsed. Can be made. This is because when the abnormality of the detection unit 10 is simply a runaway of the detection unit control unit 100, the abnormality can often be solved by restarting the detection unit control unit 100. 200 determines the occurrence of an abnormality in the detection unit 10 and stops monitoring the leakage of the detection target gas, and then automatically restarts the power supply, so that the detection unit 10 detects the detection target gas again. Leak monitoring can be started. When the alarm unit control unit 200 determines that an abnormality of the detection unit 10 occurs again within a predetermined period, for example, even when the detection unit control unit 100 of the detection unit 10 is restarted, the alarm unit control unit 200 It can be determined as a failure.

  When a failure of the detection unit 10 or the alarm unit 20 is found, the failed detection unit 10 or the alarm unit 20 is replaced with a new device. At this time, both the device information on the detection unit 10 side and the device information on the alarm unit 20 side are stored in the first storage unit 101 of the failed detection unit 10 or the second storage unit 201 of the failed alarm unit 20. Therefore, by confirming either the first storage unit 101 or the second storage unit 201 of the collected device, it is possible to confirm the history of operations of the detection unit 10 and the alarm unit 20 stored until the failure is discovered. It becomes possible to specify the occurrence time and cause of the failure.

  In the above-described embodiment, the switch as the operation unit 23 included in the alarm unit 20 has a configuration in which the operation check lamp as the second notification unit 22 is built in. However, the operation unit 23 and the second notification unit are described. 22 are configured separately, the second notification unit 22 is provided at a position that is easily visible from the outside of the casing of the alarm unit 20, and the operation unit 23 is provided at a position that is easy to operate from the outside of the casing of the alarm unit 20. It may be a configuration.

  In the embodiment described above, the configuration in which the alarm unit 20 includes the operation unit 23 and the operation processing unit 223 has been described, but the configuration is not limited thereto. The operation unit 23 and the operation processing unit 223 may have a configuration provided only in the detection unit 10 or a configuration provided in each of the detection unit 10 and the alarm unit 20. By operating the operation unit on the detection unit 10 side, the state of the alarm device 1 can be notified from the first notification unit 12 of the detection unit 10 and the second notification unit 22 of the alarm unit 20.

  In the embodiment described above, the case where the alarm notification unit 21 is a speaker has been described. However, the alarm notification unit 21 may be an alarm buzzer or an alarm lamp instead of or in addition to the speaker. Instead of or in addition, a configuration may be adopted in which LP gas leakage is notified by sounding an alarm buzzer, turning on, blinking, or turning off an alarm lamp.

  When an alarm lamp is employed as the alarm notification unit 21, the alarm lamp and the operation confirmation lamp as the second notification unit 22 are combined to emit light patterns such as lighting, blinking, and extinction, green, red, etc. By changing the combination of the luminescent colors, the alarm notification by the alarm notification unit 21 and the notification of the state of the alarm device 1 by the second notification unit 22 may be distinguishable.

  In the embodiment described above, the case where the second notification unit 22 is an operation check lamp has been described. However, the second notification unit 22 is an operation check buzzer or an operation check speaker in place of or in addition to the operation check lamp. It is possible to detect normality of the alarm device 1, abnormality such as leakage of LP gas, failure, etc. by sounding the operation confirmation buzzer, synthesized sound from the operation confirmation speaker, sound by electronic sound, or a combination thereof. The structure which alert | reports this state may be sufficient.

  In the embodiment described above, the case where the first notification unit 12 is an operation check lamp has been described. However, the first notification unit 12 is an operation check buzzer or an operation check speaker instead of or in addition to the operation check lamp. It is possible to detect normality of the alarm device 1, abnormality such as leakage of LP gas, failure, etc. by sounding the operation confirmation buzzer, synthesized sound from the operation confirmation speaker, sound by electronic sound, or a combination thereof. The structure which alert | reports this state may be sufficient.

  Each of the above-described embodiments is an example of the present invention, and the present invention is not limited by the description. The specific configuration of each part can be appropriately changed and designed within the range where the effects of the present invention are exhibited. Needless to say.

1: Alarm 10: Detection unit 11: Gas sensor 12: First notification unit 15: Detection unit power supply unit 20: Alarm unit 21: Alarm notification unit 22: Second notification unit 23: Operation unit 25: Alarm unit power supply unit 30: Wired 31: Communication line 33: Feed line 100: Detection unit control unit (first control unit)
101: first storage unit 111: arithmetic processing unit 112: first notification control unit 131: first communication unit 132: first communication control unit 133: detection unit power supply control unit 200: alarm unit control unit (second control unit)
201: second storage unit 221: alarm notification control unit 222: second notification control unit 223: operation processing unit 231: second communication unit 232: second communication control unit 233: alarm unit power supply control unit

Claims (2)

An alarm device in which a detection unit configured to detect an external environment and a warning unit including a warning notification unit configured to notify a warning based on a change in the detected external environment are connected to each other by wire. There,
The detection unit includes a first control unit that controls the detection unit,
The first control unit is configured to start / stop control of the detection unit in response to supply / stop of a predetermined control voltage from the alarm unit via the wire,
The alarm unit includes a second control unit that controls supply / stop of the control voltage to the first control unit via the wire,
The detection unit and the alarm unit include detection unit communication for communicating device information on the detection unit side to the alarm unit via the wired line, and device information on the alarm unit side to the detection unit via the wired line. It is configured to alternately execute alarm unit communication to communicate,
The second control unit determines that an abnormality has occurred in the detection unit when the detection unit communication is not received for a predetermined time after transmitting the alarm unit communication, and supplies the control voltage to the first control unit Alarm configured to stop. 2. The alarm device according to claim 1, wherein the second control unit starts supplying the control voltage again after a predetermined time has elapsed after stopping the supply of the control voltage to the first control unit.

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