JP3148639U - Alarm - Google Patents

Abstract

The present invention provides an alarm device capable of quickly and appropriately confirming a gas leak state and ventilating safely without turning on a room lighting at the time of a gas leak alarm at night or the like. An alarm device 10 detects a gas leak by a CO detector 12 and a CH4 detector 14 and issues an alarm by a notification unit 30. The alarm device 10 is provided with an illumination device 24 that illuminates a part or all of the monitoring area, and the illumination control unit 40 drives the illumination device 24 when a gas leak is detected. Furthermore, an illuminance sensor that detects the illuminance of the monitoring area is provided, and the illumination control unit 40 can drive the illumination device when both the gas leak detection and the brightness decrease detection by the illuminance sensor are determined. [Selection] Figure 2

Description

The present invention relates to an alarm device for detecting and alarming a gas leak.

  2. Description of the Related Art In recent years, alarm devices (fire gas leak alarm devices) that detect city gas at home, detect heat and smoke due to fire, and give an alarm by voice message have been put into practical use.

Such an alarm device has a function of a gas detector for detecting city gas and carbon monoxide and a function of a fire detector for detecting an alarm by detecting smoke and heat due to a fire using commercial AC 100V and a built-in battery as a power source. When a fire or gas leak is detected, the type of abnormality is displayed as a warning by an indicator lamp such as an LED, and a voice alarm by voice synthesis is output.
JP 2002-042259 A JP 2005-208957 A

  However, in such a conventional alarm device, when a gas leak is detected and alarmed in a state where it is installed in a kitchen during sleep at night, etc., it is desired to turn on the light to confirm the state of the gas leak. In the unlikely event that a gas leaks, there is a possibility of causing an explosion accident by igniting the leaking gas due to the spark generated by the switch operation when turning on the lighting, so without lighting, It is necessary to open a window and ventilate first.

  However, since it is necessary to respond quickly in the dark where lighting cannot be turned on, it is likely to panic, and it is expected that quick and appropriate response cannot be performed.

An object of the present invention is to provide an alarm device that enables a safe and quick check of a gas leak state and ventilation without turning on general lighting of a room at the time of a gas leak alarm at night or the like. In addition, it automatically provides safe lighting and reduces the occurrence of spark ignition accidents caused by general lighting lighting operations when a gas leaks.

The present invention provides an alarm device for detecting a gas leak by a gas detection unit and alarming by a notification unit.
A lighting device that illuminates part or all of the monitoring area;
An illumination controller that drives the illumination device when a gas leak is detected by the gas detector; and
It is provided with.

  The present invention further includes a light / dark sensor for detecting the light / dark of the monitoring area, and the illumination control unit activates the lighting device when both the gas leak detection by the gas detection unit and the brightness decrease detection by the light / dark sensor are determined. To drive.

  The present invention further includes a human sensor for detecting a human body, and the illumination control unit drives the lighting device when both the detection of gas leakage by the gas detection unit and the human body detection by the human sensor are determined.

  The present invention further includes a human sensor for detecting the human body and a light / dark sensor for detecting the brightness of the monitoring area, and the illumination control unit detects a gas leak by the gas detection unit, and detects the human body and the light / dark sensor by the human sensor. When it is determined that the brightness reduction has been detected, the illumination device is driven.

  The illumination control unit provides a delay time from gas leak detection by the gas detection unit or other alarm device to lighting on.

  The lighting control unit stops driving the lighting device when it determines an alarm stop operation during driving of the lighting device.

  The illumination controller temporarily drives the illumination device when determining the test operation.

  The lighting control unit holds the driving state for at least a predetermined period even when the alarm stop operation is determined during the lighting driving.

The lighting control unit does not drive the lighting device when it determines an alarm stop operation during the lighting driving start delay time.

  According to the present invention, when a gas leak alarm is issued, a lighting device provided in the alarm device is driven to illuminate a part or all of a monitoring area such as a kitchen, and the general lighting installed in the room Without turning on the light, the gas leakage situation and ventilation work can be done quickly and appropriately under the safe automatic lighting of the alarm itself, and there is no need to turn on the lighting of the room, so the lighting switch is turned on The risk of gas explosion due to sparks during operation can be avoided.

  In addition, by driving the lighting device by detecting a decrease in brightness by a light / dark sensor, lighting is performed only in the dark such as evening or night. For example, in the case of a battery-powered alarm device, battery consumption due to unnecessary lighting is reduced. It can be avoided.

  In addition, by driving the lighting device by detecting the human body with a human sensor, it is illuminated when a person comes to the monitoring area of the alarm device, and is not illuminated when there is no person, for example, for a battery-powered alarm device In some cases, battery consumption due to unnecessary illumination can be avoided.

  Furthermore, by driving the lighting device when both the brightness reduction detection by the light and dark sensor and the human body detection by the human sensor are discriminated, the illumination is performed only when the monitoring area is dark and a person comes. In the case of a battery-powered alarm device, battery consumption due to unnecessary illumination can be further avoided.

Furthermore, even in an alarm device network system in which alarm information is shared by communicating between multiple alarm devices, and other interlocking destination alarm devices are alerted from the information of the interlocking source alarm device, any alarm device in the system It is possible to provide a system application such as driving an illumination device of another linked alarm device from an alarm. The alarm device in the system is not only a gas leak alarm device, but also includes a fire sensor unit in place of the gas detection unit, for example, and a fire alarm unit having other configurations similar or similar to the gas leak alarm device of the present invention. You can also make it. Of course, the system can also include a fire gas leak alarm having both a gas detector and a fire sensor, and various security alarms.

FIG. 1 is an explanatory view showing the appearance of an alarm device for detecting and alarming a gas leak according to the present invention. In FIG. 1, the alarm device 10 is provided with a CO detector 12, a CH ₄ detector 14, a power lamp 15, a CH ₄ warning lamp 16, a CO warning lamp 18, and a speaker 20 in one casing.

The CO detector 12 and the CH ₄ detector 14 are semiconductor gas sensors and detect CH ₄ (methane) and CO at different timings.

A CH ₄ warning light 16 and a CO warning light 18 are provided corresponding to the CO detection unit 12 and the CH ₄ detection unit 14, and the abnormality type detected by detecting the corresponding warning light when CO and CH ₄ are detected. Is displayed as a warning. At the same time, an audio alarm is output from the speaker 20.

  Further, the alarm device 10 is provided with an alarm stop switch 22 in the housing, and a pull string 21 is drawn from the switch lever of the alarm stop switch 22 to the lower side of the alarm device 10. In this embodiment, the alarm stop switch 22 is also used as a test switch for instructing a test of the function of the alarm device.

  Further, the alarm device 10 is provided with a lighting device 24. For example, a white LED is used as the illuminating device 24. The monitoring area can be illuminated by irradiating with sufficient illumination light with low power consumption, and the kitchen in which the alarm device 10 is installed by driving the illuminating device 24. Illuminate part or all of the surveillance area. Here, the illumination direction of the illumination device 24 may be fixed, for example, so as to face the floor surface, or may be arranged so as to be adjustable so as to face any illumination direction.

FIG. 2 is a block diagram showing a first embodiment of an internal processing block configuration provided in the alarm device of FIG. In FIG. 2, the alarm device 10 is provided with a CPU 28 that functions as a control unit, and a CO detection unit 12 and a CH ₄ detection unit 14 are connected to the CPU 28 as a gas detection unit. For the CPU 28, a lighting device 24, a notification unit 30, an operation unit 32, a transfer output unit 34, and a power supply unit 36 are provided.

The notification unit 30 includes a power lamp 15, a CH ₄ warning lamp 16, a CO warning lamp 18, and a speaker 20. The operation unit 32 is provided with an alarm stop switch 22. The power source unit 36 may obtain a predetermined DC power source voltage from AC 100 volts, or may be a battery power source.

  The CPU 28 is provided with a gas leak monitoring unit 38 and an illumination control unit 40 as functions realized by executing the program.

The gas leak alarm monitoring unit 38 compares the output from each of the CO detection unit 12 and the CH ₄ detection unit 14 with a corresponding predetermined threshold value, and outputs the CO detection signal and the CH ₄ detection signal when the output exceeds the threshold value. When the CO is detected, the CO warning lamp 18 is turned on. If the CH _{4 is} detected, the CH ₄ warning lamp 16 is turned on. Further, the speaker confirms that “a gas leak has occurred in the kitchen. Please generate a voice message.

  When the alarm stop switch 22 is operated to distinguish the test stop operation from the test switch operation, for example, for a few seconds or more, the gas leak monitoring unit 38 determines the alarm stop switch operation and outputs the speaker. The alarm output from 20 is stopped.

  The gas leakage monitoring unit 28 notifies that the alarm is stopped when the alarm is stopped. During such alarm stop state notification, the warning light in the alarm state at that time continues to be lit. Of course, if the alarm state is canceled while the alarm is stopped, the corresponding warning light is turned off.

Further, the gas leakage monitoring unit 38 cancels the alarm stop state after a certain time, for example, 10 minutes from the alarm stop based on the operation of the alarm stop switch 23, and again outputs an alarm if there is an alarm state based on the detection of CO and CH ₄ at that time. To do.

The illumination control unit 40 compares the output from each of the CO detection unit 12 and the CH ₄ detection unit 14 with the corresponding predetermined threshold when the gas leak detection is performed by the gas leak monitoring unit 38, and the output reaches the threshold value. When the gas leak is detected by CO detection or CH ₄ detection when exceeding, the lighting device 24 is driven to illuminate a part or all of the monitoring area.

  The driving process of the illuminating device 24 that is automatically performed through such a process is to prevent mechanical contacts from intervening as much as possible, such as directly operating the LED drive circuit by the transistor by the port output of the CPU 28 or the like. desirable. This also applies to other embodiments described later.

  Illumination of the monitoring area by the illumination device 24 is continuously performed during the alarm output, and when the alarm stop operation is performed by the alarm stop switch 22, the detection of the gas leak is canceled on the condition that the gas leak detection is released. The drive stops and the light goes out. However, the driving state of the lighting device 24 is maintained when the gas leak detection continues even if the alarm stop operation is performed.

FIG. 3 is a time chart showing the gas leakage monitoring process according to the first embodiment of FIG. In FIG. 3, in the gas leak monitoring process, the initialization process is performed in step S1, and then the gas leak detection is monitored in step S2. The output of the CO detector 12 or the CH4 detector 14 exceeds a predetermined threshold value. Gas leakage due to CO detection or CH ₄ detection is determined.

If a gas leak is determined, the process proceeds to step S3, and a gas leak alarm is output. That is, the CH ₄ warning lamp 16 or the CO warning lamp 18 is turned on, and the speaker 20 outputs a gas leak warning voice message.

  Subsequently, in step S4, the illumination device 24 is driven to illuminate a part or all of the monitoring area. During illumination by driving the lighting device 24, it is determined whether or not an alarm stop operation is performed by the alarm stop switch 20 in step S6. When the alarm stop operation is determined, the gas leakage alarm is stopped in step S9, and then step S10. When it is determined that the lighting device 24 is being driven, the driving of the lighting device 24 is stopped in step S11, and the process returns to step S2.

  According to the illumination control of the first embodiment, when a gas leak is detected, the illumination device 24 is automatically driven to illuminate the monitoring area. The monitoring area is illuminated by the lighting device 24 of the alarm device 10 itself. For example, the general condition of the room driven by mechanically opening and closing the commercial power supply circuit is not turned on, and the situation of the monitoring area is safe and automatic. It can be understood by lighting, and it is possible to safely and quickly carry out ventilation work and confirmation of gas leak points. Further, since it is not necessary to turn on the lighting by operating the lighting switch, it is possible to prevent the risk of gas explosion due to sparks generated when the general lighting switch is operated.

  FIG. 4 is a block diagram showing a second embodiment of the circuit configuration provided in the alarm device of FIG. 1, and the second embodiment is characterized in that an illuminance sensor is further provided in the first embodiment of FIG. To do.

In FIG. 4, the alarm device 10 includes a CO detection unit 12, a CH ₄ detection unit 14, a CPU 28, a lighting device 24, a notification unit 30, an operation unit 32, a transfer output unit 34, and a power supply unit 36 as in FIG. 4. In addition to this, an illuminance sensor 42 is further provided. A photodiode, a phototransistor, or the like is used as the illuminance sensor 29 and outputs an illuminance detection signal corresponding to the brightness of the monitoring area.

  FIG. 5 is a time chart showing the gas leakage monitoring process in the second embodiment of FIG. The process of FIG. 5 is obtained by adding the process of step S14 to the first embodiment of FIG. 3. Steps S11 to S13 of FIG. 5 are the same as steps S1 to S3 of FIG. Steps S15 to S19 are the same as steps S4 to S7 in FIG.

  That is, in the process of FIG. 5, after a gas leak alarm is output in step S13, the illuminance detection signal from the illuminance sensor 42 is compared with a predetermined threshold value in step S14. Then, the process proceeds to step S15 to drive the illumination device 24, and if the illuminance reduction detection is not determined, step S15 is skipped and the illumination device 24 is not driven.

  According to such illumination control of the second embodiment, the illumination device 24 is driven in the case of gas leak detection at night when a decrease in brightness is detected by the illuminance sensor 42, so that the illumination device 24 Even if a gas leak is detected in a bright state where the lighting is on, the lighting device 24 is not driven, and when the alarm device 10 is driven by a battery, unnecessary driving of the lighting device 24 is avoided and unnecessary battery consumption is avoided. Can be suppressed.

  FIG. 6 is a block diagram showing a third embodiment of the circuit configuration provided in the alarm device of FIG. 1, and the third embodiment is characterized in that a human sensor is further provided in the first embodiment of FIG. And

In FIG. 6, the alarm device 10 includes a CO detection unit 12, a CH ₄ detection unit 14, a CPU 28, a lighting device 24, a notification unit 30, an operation unit 32, a transfer output unit 34, and a power supply unit 36, as in FIG. 4. In addition to this, a human sensor 44 is further provided. As the human sensor 44, for example, a sensor that detects infrared rays emitted from a human body is used.

  FIG. 7 is a time chart showing the gas leakage monitoring process in the third embodiment of FIG. The process of FIG. 7 is obtained by adding the process of step S24 to the first embodiment of FIG. 3. Steps S21 to S23 of FIG. 7 are the same as steps S1 to S3 of FIG. Steps S25 to S29 are the same as steps S4 to S7 in FIG.

  That is, in the process of FIG. 7, after a gas leak alarm is output in step S23, if a human body detection signal is obtained from the human sensor 44 in step S24, the human body detection is determined, and the process proceeds to step S25. If the human body detection is not determined, the step S25 is skipped and the illumination device 24 is not driven.

  According to the lighting control of the third embodiment, the lighting device 24 is driven only when a person goes to the monitoring area in the case of gas leak detection. When the alarm device 10 is battery-driven without being driven, unnecessary driving of the lighting device 24 can be avoided and unnecessary battery consumption can be suppressed.

  FIG. 8 is a block diagram showing a fourth embodiment of the circuit configuration provided in the alarm device of FIG. 1. In the fourth embodiment, an illuminance sensor and a human sensor are further provided in the first embodiment of FIG. It is characterized by that.

In FIG. 8, the alarm device 10 includes a CO detection unit 12, a CH ₄ detection unit 14, a CPU 28, a lighting device 24, a notification unit 30, an operation unit 32, a transfer output unit 34, and a power supply unit 36, as in FIG. 4. In addition to this, an illuminance sensor 42 and a human sensor 44 are further provided.

  FIG. 9 is a time chart showing the gas leakage monitoring process in the fourth embodiment of FIG. The process of FIG. 9 is obtained by adding the process of step S34 to the first embodiment of FIG. 3. Steps S31 to S33 of FIG. 9 are the same as steps S1 to S3 of FIG. Steps S35 to S39 are the same as steps S4 to S7 in FIG.

  That is, in the process of FIG. 9, after the gas leak alarm is output in step S33, when both the illuminance decrease detection by the illuminance sensor 42 and the human body detection by the human sensor 44 are determined in step S34, the process proceeds to step S35. When the lighting device 24 is driven and the illuminance reduction detection or the human body detection is not determined, step 325 is skipped and the lighting device 24 is not driven.

  According to such illumination control of the fourth embodiment, when a gas leak is detected at night, the illumination device 24 is driven only when a person goes to the monitoring area, and unnecessary illumination device 24 is further driven. Avoiding unnecessary battery consumption can be avoided.

  In the above embodiment, the illumination control unit 40 may provide a predetermined delay time after the gas leakage is detected until the illumination device 24 is driven. In this way, by providing a delay time for starting the driving of the lighting device 24, when the alarm stop operation is determined within the delay time, the lighting device 24 is not driven, and the lighting device 24 is unnecessary due to a false alarm. Driving is prevented, and in the case of battery driving, wasteful power consumption due to illumination driving can be suppressed.

  In addition, the lighting control unit 40 does not drive the lighting device when the operation for stopping the alarm is determined during the delay time for starting the driving of the lighting device 24. If the stop operation is performed, unnecessary driving of the lighting device can be prevented, and in the case of battery driving, useless power consumption due to lighting driving can be suppressed.

  In addition, when the lighting control unit 40 determines an alarm stop operation during driving of the lighting device, the lighting control unit 40 keeps the driving state for at least a predetermined period, thereby further checking the ventilation work and the gas leaking point. Even if there is an alarm stop operation during evacuation, it is possible to avoid the danger of losing visibility because the lights are immediately turned off.

  Moreover, although said embodiment has taken the alarm device for residences as an example, it is applicable not only to housing but also to alarm devices for various uses such as for buildings and offices.

  Moreover, although said embodiment takes the case where a sensor part is integrally provided in the alarm device as an example, the structure isolate | separated from the sensor part and the alarm device may be sufficient as other embodiment.

  In addition to the illuminance sensor, various types of detectors that detect the quality of visibility due to light and darkness can be used for the brightness sensor of the present invention.

The present invention is not limited to the above embodiment, includes appropriate modifications without impairing the object and advantages thereof, and is not limited by the numerical values shown in the above embodiment.

Illustration of the alarm device according to the present invention The block diagram which showed 1st Embodiment of the alarm device by this invention The flowchart which showed the gas leak monitoring process in 1st Embodiment of FIG. The block diagram which showed 2nd Embodiment of the alarm device by this invention which provided the illumination intensity sensor. The flowchart which showed the gas leak monitoring process in 2nd Embodiment of FIG. The block diagram which showed 3rd Embodiment of the alarm device by this invention which provided the human sensitive sensor. The flowchart which showed the gas leak monitoring process in 2nd Embodiment of FIG. The block diagram which showed 4th Embodiment of the alarm device by this invention which provided the illumination intensity sensor and the human sensitive sensor. The flowchart which showed the gas leak monitoring process in 2nd Embodiment of FIG.

Explanation of symbols

10: Alarm 12: CO detector 14: CH ₄ detector 15: Power lamp 16: CH ₄ warning lamp 18: CO warning lamp 20: Speaker 21: Pull string 22: Alarm stop switch 24: Lighting device 28: CPU
30: Notification unit 32: Operation unit 34: Transfer output unit 36: Power supply unit 38: Gas leak monitoring unit 40: Illumination control unit 42: Illuminance sensor 44: Human sensor

Claims (9)

In an alarm device that detects a gas leak by the gas detection unit and warns by the notification unit,
A lighting device that illuminates part or all of the monitoring area;
An illumination control unit that drives the illumination device when a gas leak is detected by the gas detection unit;
Alarm device characterized by comprising
The alarm device according to claim 1, further comprising a light / dark sensor for detecting the light / dark of the monitoring area,
The illumination control unit drives the illumination device when both the detection of gas leakage by the gas detection unit or another alarm device and the detection of brightness reduction by the brightness sensor are determined. .
The alarm device according to claim 1, further comprising a human sensor for detecting a human body,
The lighting control unit drives the lighting device when both the detection of gas leakage by the gas detection unit or another alarm device and the human body detection by the human sensor are determined.
The alarm device according to claim 1, further comprising a human sensor for detecting a human body and a light / dark sensor for detecting light and dark in a monitoring area,
The illumination control unit detects a gas leak from the gas detection unit or another alarm device, and drives the illumination device when it is determined that a human body is detected by the human sensor and a brightness reduction is detected by the brightness sensor. An alarm device characterized by that.
5. The alarm device according to claim 4, wherein the illumination control unit has a predetermined delay time until the illumination device is driven after the gas detection by the gas detection unit or another alarm device. An alarm device characterized by providing.
The alarm device according to any one of claims 1 to 5, wherein the lighting control unit stops driving the lighting device when an alarm stop operation is determined during driving of the lighting device. Alarm to do.
6. The alarm device according to claim 1, wherein the lighting control unit temporarily drives the lighting device when determining a test operation.
8. The alarm device according to claim 1, wherein the lighting control unit holds the driving state for at least a predetermined period even when an alarm stop operation is determined during driving of the lighting device. An alarm device.
  6. The alarm device according to claim 5, wherein the illumination control unit does not drive the illumination device when an operation for stopping the alarm is determined during the delay time.

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