JP3348985B2 - Safety disaster prevention equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a safety disaster prevention device, and more particularly to a safety disaster prevention device for detecting fire heat, smoke or an intruder by a disaster prevention sensor.

[0002]

2. Description of the Related Art Conventionally, since safety and disaster prevention devices have been required to have high reliability, a fire prevention sensor for detecting fire heat, fire smoke or an intruder disposed on a ceiling or the like of each room of a house operates normally. Routine inspections are conducted to ensure operation only when abnormalities occur. However, in the case of a private house, there is a restriction in conducting the inspection such as the privacy of the individual and the inspection time zone, so that the inspection method and visit time of the disaster prevention sensor are limited. In addition, in the case of apartment buildings and large factories, the number of installed disaster prevention sensors is extremely large, so it takes a lot of labor and time for inspectors to directly inspect all disaster prevention sensors. Was.

In order to solve such a problem, the present inventor has disclosed a self-inspection device of a safety disaster prevention system capable of driving a disaster prevention sensor from a remote place (Japanese Patent Application No. Hei 6-115040). . For example, as shown in FIGS. 8A and 8B, the self-inspection device of the safety and disaster prevention system includes a smoke detector 8 installed on a ceiling or the like of each room in a house.
2 is provided. The smoke detector 82 includes a light source 84,
And a light emitting / receiving device 83 in which a photoelectric sensor 85 as a disaster prevention sensor for detecting reflected light generated by the light from the light source 84 being reflected by the smoke, and the light from the light source 84 are artificially transmitted to the photoelectric sensor 85. Light reflector 8 to be reflected
6, a light reflecting plate 86 is fixed via a support arm 87, a motor 88 for rotating the light reflecting plate 86, and a substrate 89 for fixing the photoelectric sensor 85 and the motor 88.
And a plurality of holes 90a through which only smoke can enter, and a cover 90 that protects the smoke detector 82.

As shown in FIG. 9, a self-inspection device 81 configured as described above has a control circuit 91 for controlling a motor 88.
And a driving circuit 94 for driving an alarm 95 based on an electric signal output from the photoelectric sensor 85 of the detecting unit 92. Accordingly, the test operation of the photoelectric sensor 85 can be performed only by moving the light reflecting plate 86 that reflects the light from the light source 84 installed at the predetermined position to the position opposite to the photoelectric sensor 85 by the motor 88. The detection function inspection of the photoelectric sensor 85 can be performed without the inspector directly going to the place where the photoelectric sensor 85 is installed.

[0005]

However, large-scale wiring work must be performed to install the detection unit 92 and the self-inspection unit 93 in the safety disaster prevention device installed in an apartment house, a large factory, or the like. It is desirable to simplify the wiring.

[0006]

It is an object of the present invention to provide a safety disaster prevention device which can simplify wiring in installation work of a device having a function capable of self-inspection of a disaster prevention sensor.

[0007]

The safety and disaster prevention apparatus of the present invention for achieving the above object has a disaster prevention sensor for detecting fire smoke, fire heat or an intruder, and a sensor test operation means for performing a test operation of the disaster prevention sensor. A detector installed in the house, a receiver having a self-inspection circuit for driving the sensor test operation means, and an alarm device driven by the self-inspection circuit when the sensor test operation means tests the disaster prevention sensor Wherein the detector and the receiver each have a transmission / reception circuit for transmitting / receiving a radio signal.

Further, in the safety disaster prevention device of the present invention, a detector installed in a house having a disaster prevention sensor for detecting fire smoke, fire heat or an intruder, and a sensor test operation means for performing a test operation of the disaster prevention sensor, A receiver having a self-inspection circuit for driving the sensor test operation means, and a safety disaster prevention device including an alarm device driven by the self-inspection circuit only when the disaster prevention sensor is tested by the sensor test operation means, The receiver is provided with a transmitter / receiver circuit for wirelessly transmitting a drive signal for driving the sensor test operation means of the detector output from the self-inspection circuit, and the detector receives a wireless drive signal from the receiver. And wirelessly transmits and receives a detection signal output from the disaster prevention sensor that has been tested and operated via the sensor test operation means by a wireless drive signal. Detecting dexterity transceiver circuit for transmitting to the road in which is provided.

In the safety and disaster prevention apparatus of the present invention, the disaster prevention sensor includes a light source and a light emitting / receiving device in which a photoelectric sensor for detecting reflected light generated by light from the light source being reflected by smoke is incorporated. Wherein the sensor test operation means includes a light reflecting plate for reflecting light from the light source toward the photoelectric sensor, and a motor or a solenoid valve for moving the light reflecting plate.

[0010] In the safety and disaster prevention device of the present invention,
The disaster prevention sensor is a pyroelectric infrared sensor that detects infrared rays radiated by the temperature of the human body, and the sensor test operation means is a porous filter that changes the ambient temperature near the pyroelectric infrared sensor, and a motor that moves the porous filter. Or it is provided with an electromagnetic valve. Further, in the safety disaster prevention device of the present invention, the disaster prevention sensor is an ultrasonic sensor that oscillates ultrasonic waves and detects a human body by detecting reflected ultrasonic waves reflected by the human body. The means includes an ultrasonic reflector for reflecting the ultrasonic wave oscillated from the ultrasonic sensor, and a motor or a solenoid valve for moving the ultrasonic reflector.

Further, in the safety disaster prevention device of the present invention, the disaster prevention sensor is a temperature sensor for detecting heat, and the sensor test operation means is a heating element.

[0012]

In the safety disaster prevention device, in order to test the detection function of the disaster prevention sensor, the self test circuit provided in the receiver drives the sensor test operation means from the transmission / reception circuit of the receiver to the transmission / reception circuit of the detector. Wireless signal for transmission. The sensor test operation unit performs a test operation of the disaster prevention sensor based on the wireless signal, and outputs a detection signal from the disaster prevention sensor. A detection signal from the disaster prevention sensor is transmitted as a wireless signal from the transmission / reception circuit of the detector to the transmission / reception circuit of the receiver. The receiver can drive the alarm based on the wireless signal as the detection signal.

More specifically, a driving signal for driving the sensor test operation means of the detector, which is output from a self-inspection circuit provided in the receiver, is wirelessly transmitted from the transmitting / receiving circuit for the receiver to the transmitting / receiving circuit for the detector. . The detector transmitting / receiving circuit inputs the wireless drive signal to the sensor test operation means, and the sensor test operation means performs the test operation of the disaster prevention sensor based on the drive signal. The tested disaster prevention sensor outputs a detection signal to the detector transmission / reception circuit, and the detector transmission / reception circuit wirelessly transmits the detection signal to the receiver transmission / reception circuit. The receiver transmitting / receiving circuit inputs a wireless detection signal to the self-inspection circuit, and the self-inspection circuit can drive the alarm based on the detection signal.

As described above, since the detector and the receiver are wireless, the wiring for the self-inspection is simplified in the installation work of the safety and disaster prevention device, and further, when the mounting position of the disaster prevention sensor is changed. In this case, the wiring work can be easily performed.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the safety and disaster prevention apparatus of the present invention will be described below with reference to the drawings. As shown in FIGS. 1, 2 (a) and 2 (b), the safety and disaster prevention device of the present invention includes a smoke detector 2 as a detector installed on a ceiling of each living room of an apartment house, for example, and a smoke detector 2 of the apartment house. The fire detector 3 is installed in the control room, and receives a smoke detection signal S ₁ , S ₂ output from the smoke detector ₂ , and an alarm 4 driven by a signal from the fire receiver 3. ing.

The smoke detector 2 includes a light source 9, a light receiving and emitting device 8 in which a photoelectric sensor 10 as a disaster prevention sensor for detecting a reflected light generated by the light from the light source 9 being reflected by smoke, and a light source 9. Photoelectric sensor 1
Light reflector 1 as sensor test operating means for reflecting light to zero
1, a light reflecting plate 11 is fixed via a support arm 15, and a motor 12 as a sensor test operation means for rotating the light reflecting plate 11, a photoelectric sensor 10 and a motor 1
2 is provided with a substrate 13 for fixing the device 2, a transmission / reception circuit 18 for wirelessly communicating with the fire receiver 3, and a cover 14 for protecting them.

A light emitting diode (LED) is used as the light source 9 of the light receiving and emitting device 8 to make the light source 9 as small as possible. preferable. The photoelectric sensor 10 has high sensitivity to scattered light and reflected light, and converts these lights into smoke detection signals S ₁ and S _2. For example, a PIN silicon photodiode or the like can be used.

The light reflecting plate 11 has a mirror-finished surface or a surface having a high reflectivity such as a metal-deposited surface, and this reflecting surface reflects light from the light source 9 to the photoelectric sensor 10 efficiently. Shape. This light reflection plate 11
Is for inspecting the detection function of the photoelectric sensor 10,
By driving the motor 12, the light source 9 and the photoelectric sensor 10 are rotated to a position corresponding to the light receiving and emitting device 8 in which the light source 9 and the photoelectric sensor 10 are incorporated at the time of inspection. Is rotated by the required rotation angle so as to deviate from the required position.

The transmission / reception circuit 18 is used for wireless communication with a transmission / reception circuit 19 of the fire receiver 3 to be described later. The radio signal transmitted from the transmission / reception circuit 18 is an analog signal generated as a change in the amplitude or frequency of an oscillator. Wave AM: FM
It may be a signal wave or a signal generated by a code generator using a pulse signal. And as these signal waves or signals, or radio frequency put in the carrier, the transducer 20 to output as a vibration energy E _2, such as electromagnetic fields and ultrasound are provided.

The cover 14 is formed so as to completely block external light, and is provided with a plurality of holes 14a through which only smoke can enter. Fire receiver 3
Denotes a management circuit 5 used when a fire is detected, a self-inspection circuit 6 used when detecting the detection function of the photoelectric sensor 10, and a changeover switch for selectively switching the management circuit 5 or the self-inspection circuit 6. 7 and a transmission / reception circuit 19 for wirelessly communicating with the smoke detector 2.

The management circuit 5 receives the smoke detection signal S ₁ from the photoelectric sensor 10 for detecting the reflected light generated by the light of the light source 9 being reflected by the smoke at the time of fire, and based on the smoke detection signal S ₁ . The alarm signal S ₃ is output to the alarm device 4. As shown in FIG. 3, the self-inspection circuit 6 receives a control circuit 16 for controlling the motor 12 and a vibration energy E ₂ as a smoke detection signal S ₂ output from the photoelectric sensor 10 in the smoke detector ₂ . and a driving circuit 17 for outputting a test signal S ₄ based on this vibration energy E ₂ to alarm 4.

The alarm 4 is driven by either the alarm signal S ₃ from the management circuit 5 selected by the changeover switch 7 or the inspection signal S ₄ from the self-inspection circuit 6.
As such an alarm 4, for example, an audio alarm, an alarm display, or the like is used. In the transmission / reception circuit 19, similarly to the transmission / reception circuit 18 of the smoke sensor 2, the radio signal transmitted from the transmission / reception circuit 19 may be an analog signal wave AM: FM signal wave generated as a change in amplitude or frequency of an oscillator. , A signal generated by a code generator using a pulse signal. And as these signal waves or signals, or radio frequency put in the carrier, the transducer 21 to output as a vibration energy E _1, such as electromagnetic fields and ultrasound are provided.

In the fire and smoke monitoring device 1 as such a safety and disaster prevention device, at normal times, that is, when the management circuit 5 is selected by the changeover switch 7, the photoelectric sensor 10
The light reflecting plate 11 for inspecting the light emitting / receiving device is out of the position facing the light emitting / receiving device 8. Therefore, only when the photoelectric sensor 10 detects the reflected light generated by the smoke from the fire entering through the hole 14a formed in the cover 14 of the smoke detector 2 and the light from the light source 9 being reflected by the smoke, The alarm 4 is driven via the circuit 5.

On the other hand, when the self-inspection circuit 6 is selected by the changeover switch 7, the detection function of the photoelectric sensor 10 can be inspected. The detection function test of the photoelectric sensor 10 is performed by driving the motor 12 by the control circuit 16 provided in the self-inspection circuit 6 of the fire receiver 3. The vibration energy E ₁ as a drive signal is transmitted to the second transducer 20. The transducer 20 of the smoke detector 2 has a vibration energy E ₁
, The vibration energy E ₁ is converted into AC power and output to the transmission / reception circuit 18. The transmission / reception circuit 18 generates a sensor drive signal based on the AC power, outputs the sensor drive signal to the motor 12, drives the motor 12, and moves the light reflection plate 11 to a position facing the light emitting and receiving device 8. When the light reflecting plate 11 is moved to a position facing the light emitting and receiving device 8, light from the light source 9 of the light receiving and emitting device 8 is reflected by the light reflecting plate 11, and the reflected light is transmitted to the photoelectric converting device of the light receiving and emitting device 8. The light is received by the sensor 10.

The light reflected by the light reflecting plate 11 is converted into a smoke detection signal S ₂ by the photoelectric sensor 10, and outputs the smoke detection signal S ₂ to the transmission and reception circuit 18, by the transceiver circuit 18 is a transducer 20 transmitting the vibration energy E ₂ of the smoke detection signal S ₂ to the transducer 21 of the fire receiver 3. Transducer 21 of the fire receiver 3 outputs to the transmission and reception circuit 19 and the vibration energy E ₂ into AC power. The transmission / reception circuit 19 applies this AC power to the driving circuit 1 provided in the self-inspection circuit 6.
7 is input to the drive circuit 17 is inputted a test signal S ₄ based on the AC power to the alarm device 4, thereby sounding like an alarm device 4 as an alarm test.

As described above, the photoelectric sensor 10 and the motor 12
The detection function of the photoelectric sensor 10 can be inspected without connecting the smoke detector 2 provided with the sensor and the fire receiver 3 provided with the self-inspection circuit 6 with a signal line. In addition,
The sensor test operation means is not limited to the motor, but may be an electromagnetic valve for linearly reciprocating the light reflecting plate.

Further, in the case of a newly built apartment house or a large factory, not only the connection between the disaster prevention sensor and the self-inspection circuit but also the connection between the disaster prevention sensor and the management circuit normally used are made wireless. Is preferred. Further, in the above embodiments, the transmission / reception circuit is provided in the fire smoke monitoring device. However, the invention is not limited to this, and the transmission / reception circuit may be provided in the intrusion alarm device or the fire heat monitoring device.

As shown in FIG. 4, the intrusion alarm device to which the transmission / reception circuit is applied is a human body detector 52 as a detector installed on a ceiling or the like of each room of an apartment house, and is installed in a control room of the apartment house. , A receiver 53 to which a human body detection signal S ₂ output from the human body detector 52 is input, and an alarm 54 driven by a signal from the receiver 53. Transmitter / receiver circuit 5 for receiver 53
6 are provided.

The human body detector 52 includes a pyroelectric infrared sensor 57 as a disaster prevention sensor for detecting infrared rays emitted by the temperature of the human body, and a sensor test operation means for changing an ambient temperature near the pyroelectric infrared sensor 57. Perforated filter 58 and motor 59 or solenoid valve (not shown) as sensor test operating means for moving perforated filter 58
(FIGS. 5A and 5B).

Further, the receiver 53 drives the motor 59 to move the multi-hole filter 58 and
A self-inspection circuit 60 for driving the alarm 54 only when the user 8 is moved is provided. In the intrusion alarm device 51 configured as described above, in order to inspect the detection function of the pyroelectric infrared sensor 57, the self-inspection circuit 60 provided in the receiver 53 uses the transmission / reception circuit 56 of the receiver 53 to detect the human body. to transmit the vibration energy E ₁ for driving the motor 59 to the transmission and reception circuit 55 of the detector 52. Human body detector 52
The transmission / reception circuit 55 uses a motor 59 based on the vibration energy E ₁ to convert the porous filter 58 into a pyroelectric infrared sensor 57.
Relative position pyroelectric infrared sensor 57 is moved to the test operation, thereby outputting a human body detection signal S ₂ from the pyroelectric infrared sensor 57. The human body detection signal S ₂ from the pyroelectric infrared sensor 57 is transmitted to the transmission / reception circuit 5 of the human body detector 52.
5 and the transmission / reception circuit 56 of the receiver 53 with the vibration energy E ₂
Sent to. The self-test circuit 60 of the human body detection signal receiver 53 based on the vibration energy E ₂ as S ₂ causes sounding like the alarm 54.

As described above, even if the human body detector 52 provided with the pyroelectric infrared sensor 57, the motor 59 and the like and the receiver 53 provided with the self-inspection circuit 60 are not connected by a signal line, the pyroelectricity can be obtained. Inspection of the detection function of the infrared sensor 57 can be performed. Needless to say, the management circuit used when the fire and smoke monitoring device detects fire and smoke is also used in this intrusion alarm device.

Further, the disaster prevention sensor is not limited to the pyroelectric infrared sensor, but may be an ultrasonic sensor. In this case, an ultrasonic reflecting plate is used as a sensor test operation means moved by a motor or an electromagnetic valve. As shown in FIG. 6, the fire heat monitoring apparatus to which the transmission / reception circuit is applied is provided in a heat detector 72 as a detector installed on a ceiling or the like of each room of an apartment house and in a management room of the apartment house. , A fire detector 73 to which the heat detection signal S ₂ output from the heat detector 72 is input, and an alarm 74 as alarm means driven by a signal from the fire receiver 73. Transmission / reception circuit 7 at 72
5. The fire receiver 73 is provided with a transmission / reception circuit 76.

The heat sensor 72 includes a temperature sensor 77 as a disaster prevention sensor for detecting a high temperature state due to a fire or the like, and a heater coil 7 as a heating element for performing a test operation of the temperature sensor 77.
8 (FIG. 7). Further, the fire receiver 73 is provided with a self-inspection circuit 79 for causing the heater coil 78 to generate heat and for driving the alarm 74 only when the heater coil 78 drives the temperature sensor 77.

The fire heat monitoring apparatus 71 thus configured
In order to inspect the detection function of the temperature sensor 77,
Self test circuit 79 provided in the fire receiver 73 to transmit the vibration energy E ₁ for the transmission and reception circuit 76 of the fire receiver 73 to the reception circuit 75 of the heat detector 72 drives the heater coil 78. Reception circuit 75 of the heat detector 72 is the heater coil 78 based on this vibration energy E ₁
Is turned on, and the ambient temperature of the temperature sensor 77 is made high. When the ambient temperature of the temperature sensor 77 changes to the set temperature, the temperature sensor 77 performs a test operation, and the heat detection signal S
₂ is output. The heat detection signal S ₂ from the temperature sensor 77 is transmitted from the transmission / reception circuit 75 of the heat sensor 72 to the transmission / reception circuit 76 of the fire receiver 73 as vibration energy E ₂ . Self-test circuit 79 of the fire receiver 73 based on the vibration energy E ₂ as the heat detecting signal S ₂ causes sounding like the alarm 74.

As described above, the heat sensor 72 provided with the temperature sensor 77 and the heater coil 78, and the self-inspection circuit 79
The detection function of the temperature sensor 77 can be inspected without connecting to the fire receiver 73 provided with. Needless to say, the management circuit used when the fire smoke monitoring device detects fire smoke is also used in the fire heat monitoring device.

[0036]

As is clear from the above embodiments, according to the safety disaster prevention apparatus of the present invention, a disaster prevention sensor for detecting fire smoke, fire heat or an intruder, and a sensor test operation means for performing a test operation of the disaster prevention sensor. And a receiver having a self-inspection circuit for driving the sensor test operation means, and a receiver having a self-inspection circuit for driving the sensor test operation means, and being driven by the self-inspection circuit when the sensor test operation means performs the test operation of the disaster prevention sensor. A safety and disaster prevention device including an alarm device, wherein the detector and the receiver each have a transmission / reception circuit for transmitting / receiving a radio signal, so that wiring for self-inspection in installation work can be simplified, and Also, even when the mounting position of the disaster prevention sensor is changed, the wiring work can be easily performed.

[Brief description of the drawings]

FIG. 1 is a block diagram of a control system showing an embodiment of a safety disaster prevention device of the present invention.

FIGS. 2A and 2B are diagrams showing a smoke detector using a light reflecting plate and a motor used as one embodiment of the safety and disaster prevention device of the present invention, wherein FIG. 2A is a top sectional view and FIG. .

FIG. 3 is a block diagram showing a part of a control system as one embodiment of the safety disaster prevention device of the present invention.

FIG. 4 is a block diagram of a control system showing another embodiment of the safety and disaster prevention apparatus of the present invention.

FIGS. 5A and 5B are views showing a human body detector provided with a motor as another embodiment of the safety and disaster prevention apparatus of the present invention, wherein FIG. 5A is a cross-sectional view and FIG.

FIG. 6 is a block diagram of a control system showing another embodiment of the safety and disaster prevention apparatus of the present invention.

FIG. 7 is a sectional view showing a heat sensor using a temperature sensor and a heater coil used as another embodiment of the safety and disaster prevention apparatus of the present invention.

8A and 8B are diagrams showing a smoke detector using a light reflector and a motor used as a conventional safety and disaster prevention device, wherein FIG. 8A is a top sectional view and FIG. 8B is a side sectional view.

FIG. 9 is a block diagram of a control system of a conventional safety disaster prevention device.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Fire smoke monitoring device (safety disaster prevention device) 2 ... Smoke detector (detector) 3 ... Fire receiver (receiver) 4, 54, 74 ... Alarm device 6, 60, 79 ... Self-inspection circuit 10 ... Photoelectric sensor (Disaster prevention sensor) 11 ... Light reflector (sensor test operating means) 12, 59 ... Motor (sensor test operating means) 18, 55, 75 ... Transmitter / receiver circuit (transmitter / receiver circuit for detector) 19, 56, 76 ... Transmitter / receiver circuit (receiver) 20 transmitter / receiver 21 transmitter / receiver 51 ... intrusion alarm device (safety disaster prevention device) 52 ... human body detector (detector) 53 ... receiver 57 ... pyroelectric infrared sensor (disaster prevention sensor) 58 ... Perforated filter (sensor test operation means) 71: Fire heat monitoring device (safety disaster prevention device) 72: Heat detector (detector) 73: Fire receiver 77: Temperature sensor (disaster prevention sensor) 78: Heater coil (sensor test operation) Means) E _1, E ₂ ... vibrational energy (radio signal) S _1, S ₂ ... smoke detection signal, a human body detection signal, the thermal detection signal (detection signal)

Claims (6)

(57) [Claims] 1. A detector installed in a house having a disaster prevention sensor for detecting fire smoke, fire heat or an intruder, and a sensor test operation means for performing a test operation of the disaster prevention sensor, and driving the sensor test operation means A safety and disaster prevention device comprising: a receiver having a self-inspection circuit for causing the self-inspection circuit to perform a test operation of the disaster prevention sensor by the sensor test operation means; and an alarm device driven by the self-inspection circuit. A safety and disaster prevention device, wherein each of the receivers includes a transmission and reception circuit for transmitting and receiving a radio signal. 2. A detector installed in a residence having a disaster prevention sensor for detecting fire smoke, fire heat or an intruder, and a sensor test operation means for performing a test operation of the disaster prevention sensor, and driving the sensor test operation means A safety and disaster prevention device comprising: a receiver having a self-inspection circuit to be operated; and an alarm device driven by the self-inspection circuit only when the disaster prevention sensor is tested by the sensor test operation means. A transmitter-receiver circuit for wirelessly transmitting a drive signal for driving the sensor test operation means of the detector output from the self-inspection circuit is provided, and the detector is provided with the wireless communication from the receiver. A detection output from the disaster prevention sensor that has received the drive signal and that has been tested by the sensor test operation means in accordance with the wireless drive signal. Safety and disaster prevention apparatus characterized by sensing dexterity transceiver circuit for transmitting a signal by radio to the receiver dexterity transceiver circuit is provided. 3. The disaster prevention sensor according to claim 1, further comprising a light source and a light emitting / receiving device incorporating a photoelectric sensor for detecting a reflected light generated by the light from the light source being reflected by smoke. The safety and disaster prevention device according to claim 1 or 2, further comprising: a light reflecting plate that reflects the light from the light source toward the photoelectric sensor; and a motor or a solenoid valve that moves the light reflecting plate. 4. A pyroelectric infrared sensor for detecting infrared radiation radiated according to the temperature of a human body, wherein the disaster prevention sensor comprises:
3. The safety according to claim 1, wherein the sensor test operation means includes a porous filter for changing an ambient temperature near the pyroelectric infrared sensor, and a motor or a solenoid valve for moving the porous filter. Disaster prevention equipment. 5. The ultrasonic sensor according to claim 1, wherein the disaster prevention sensor oscillates an ultrasonic wave, and detects the human body by detecting a reflected ultrasonic wave reflected by a human body. The safety disaster prevention according to claim 1 or 2, further comprising: an ultrasonic reflector that reflects the ultrasonic waves oscillated from the ultrasonic sensor; and a motor or a solenoid valve that moves the ultrasonic reflector. apparatus. 6. The safety disaster prevention device according to claim 1, wherein the disaster prevention sensor is a temperature sensor for detecting heat, and the sensor test operation means is a heating element.