JP3052911U - Landslide debris flow generation alarm - Google Patents

Abstract

(57) [Summary] [PROBLEMS] Devices that quickly detect a landslide and issue an evacuation warning are almost manually operated, and there is no device that automatically and mechanically and electrically detects and issues an alarm. SOLUTION: An alarm device using a GPS position information satellite detects a landslide, and simultaneously uses a sensor for detecting a change in groundwater and a strain sensor or a wire switch to automatically place the sensor in a debris flow damage expected area downstream. A warning radio wave is transmitted to the FM receiver, and the landslide information is transmitted by combining a warning light and a warning sound by the receiver and the warning generator.

Description

[Detailed description of the invention]

[0001]

[Technical field to which the invention belongs]

 The present invention relates to a landslide landslide alarm.

[0002]

[Prior art]

 In the past, evacuation alerts in the event of a disaster such as a cliff collapse landslide were mostly issued by observers who were always stationed in the expected area. The mechanical and electrical devices that automatically generate an alarm when a landslide occurs have low reliability due to malfunctions or failures, and are not practical.

[0003]

[Problems to be solved by the invention]

 The inability to accurately detect the occurrence of a landslide, which is a cause of disaster, is not useful as it is, so the key is how quickly and accurately the occurrence of the cause can be detected. It is difficult, and far from realizable, to have constant observers in all landslide prospects.

[0004]

[Means for Solving the Problems]

 Applying GPS satellite radio waves to the position error detection sensor of a highly accurate warning system, which was not considered in the past, detects a 1m displacement of the ground point, and instantly reports this to the warning unit with each electric circuit. Can be. The use of a strain sensor circuit, which does not issue a landslide warning in the event of a tremor caused by a mere earthquake, etc., is also used.By incorporating an AND system circuit that the alarm system will not be activated unless mutual danger signals are output, a more probable notification can be made. You can do it.

[0005]

[Embodiment of the invention]

 On the steep slope where landslides and landslides are expected, relay circuits including sensors and GPS circuits, transmission circuits, malfunction prevention circuits, timer circuits for inspection and maintenance, solar power supplies, charging, storage batteries, etc. It will be buried in the soil, and the container of the sensor detection section will be buried further below, and a wired cable will be connected between the containers. The reception warning section will be installed on buildings and traffic paths that are considered to be dangerous in the event of a landslide so that it can be operated with a power supply of 100 VAC or 12 VDC.

[0006]

First Embodiment A landslide debris flow alarm according to a first embodiment of the present invention will be described with reference to the block diagram of FIG. When the forewarning phenomenon of landslide is detected by the moisture sensor (groundwater level detector) 13 in the soil, the displacement is detected by the position information radio wave of the GPS satellite, and when the slippage of the ground is detected by the slip strain sensor 6, The malfunction prevention circuit 8 and the AND circuit 14 determine whether or not the signal is a danger signal, and emits a warning radio wave from the FM transmission circuit 9 to the FM transmission antenna 3.

FIG. 2 is an external view showing a main device section and its installation section. About 80% of the main equipment will be buried in the soil at the upper end of the area where danger of ground slide is expected, and the sensor unit will be buried about 10m or 20m below it. This layout takes into account the case where a landslide occurs downstream of the expected level. Several slave units are connected and arranged.

FIG. 3 illustrates the master unit of the detection sensor and the slave unit of FIG. At the bottom of the buried master unit and slave unit, a water hole into which moisture in the soil penetrates is opened, and a moisture sensor 13 that is activated by the amount of infiltration water is installed inside the detector, so that the moisture content in the soil is constant. Activates when the danger area is reached and sends signals to the main unit one after another. There is a water hole at the bottom of the container so that water can enter, and when the water that enters from this reaches a certain area, the water content sensor 13 operates. Furthermore, the slip-down strain sensor 6 is sensitive only to the displacement of the slope ground due to a landslide, and does not react to micro-vibrations such as seismic waves, so that there is little malfunction.

The malfunction preventing encryption circuit 8 shown in FIGS. 1 and 3 measures the position based on the GPS satellite radio wave to determine whether or not the detected signal is correct, and transmits the position from another sensor if the ground point is shifted. Pass the signal as correct. If there is no deviation, the signal is rejected and no FM radio signal is transmitted to the reception alarm unit, which prevents the emission of error information.

The relay circuit 10 shown in FIG. 1 determines ON or OFF by distinguishing signals sent from the three types of detection sensors. Only when it is determined that a landslide is correct, the relay circuit 10 from the FM transmission circuit 9 is determined. The signal is emitted by the FM wave. In this case, the slip signal is transmitted by digital encryption so that the alarm receiving unit does not malfunction due to other radio waves or signals.

[0011]

Second Embodiment FIG. 5 is a block diagram of a second embodiment of the present invention. In the first embodiment, the GPS 12, the slip sensor 6, and the strain sensor 15 provided in the main device and the slave unit are removed, and the slip sensor 6 is removed. Instead, the main unit is provided with a wire-type switch 16, and the wire-type switch of the master unit is turned on by a pulling force caused by sliding down of the slave unit, and is an inexpensive debris flow generation alarm in combination with the moisture sensor 13 of the slave unit.

The operation of the wire-type switch 16 according to the second embodiment will be described with reference to FIGS. 6 and 7. FIG. 6 shows that an insulating plate attached to one end of a wire in a normal state at the time of installation is detachably inserted between both contact pieces of the wire type switch 16 of the main engine. The other end of the wire is fixed to the slave unit. When the slave unit slides down due to a landslide, as shown in FIG. 7, the insulating plate inserted into the wire type switch 16 of the main unit is pulled out, and the wire type switch 16 of the master unit is turned on.

The arrangement of the main unit and the slave units according to the second embodiment will be described with reference to FIG. The main unit will be buried in a place where a landslide is not expected to collapse, and the slave units will be buried downstream in a landslide expected place. The main unit and the slave unit are connected by the wire 4 for the wire type switch 16 and the signal line of the output of the moisture sensor 13 provided in the slave unit, and the main unit and the slave unit use the independent solar cells 1 as power sources.

When the danger of a landslide increases, groundwater enters the slave unit and the water content sensor 13 operates to notify the main unit. When a landslide occurs, the slave unit is washed away, the wire type switch 16 of the main unit is turned on, and an FM signal radio wave is transmitted.

FIG. 9 shows an arrangement of each circuit block in the main engine of the second embodiment. The main unit houses the wire type switch 16 and the relay circuit 10 in the FM transmission circuit 9, the solar cell 1, and the storage battery 5 in a waterproof container having a diameter of 20 cm and a total length of 100 cm.

FIG. 10 shows an arrangement of each circuit block in the slave unit of the second embodiment. The water sensor 13 and the relay circuit 10 are housed in the solar cell 1 and the storage battery 5 in the same waterproof container as the main unit.

The receiving unit and the alarm device of the first and second embodiments are common. FIG. 11 is a block diagram of the receiving unit and the alarm unit. If the code received by the FM receiving antenna 17 shown in FIG. 12 is confirmed as a signal transmitted from the main unit through the signal decoding circuit 26 shown in FIG. 13, the slide-down sensor relay circuit 27 is activated and the bell 18 shown in FIG. At the same time, the emergency light 19 and the red warning light 20 are turned on. Further, a danger warning issued when the amount of water in the soil becomes large and the danger of landslide becomes high is notified by a buzzer 21 and a yellow danger lamp 22 through a moisture sensor relay circuit 28 in FIG.

[0018]

[Effect of the invention]

 Since it is not known when a landslide will occur, especially during bedtime at night rather than during the daytime, there are many cases of loss of life. Save as many lives as possible. The alarm of the present invention is operated unattended, and requires only manual inspection of the equipment and no manual labor is required.

[Brief description of the drawings]

FIG. 1 is a circuit block diagram of a master unit and a slave unit of an alarm device according to a first embodiment.

FIG. 2 is an installation diagram of a master unit and a slave unit of the alarm device according to the first embodiment.

FIG. 3 is a diagram showing an internal arrangement of the main alarm of the first embodiment;

FIG. 4 is an internal installation diagram of the slave unit according to the first embodiment.

FIG. 5 is a circuit block diagram of a master unit and a slave unit of the alarm device according to the second embodiment.

FIG. 6 is a cross-sectional view illustrating an OFF state of the wire switch according to the second embodiment.

FIG. 7 is a cross-sectional view illustrating an ON state of the wire-type switch according to the second embodiment.

FIG. 8 is an installation diagram of a master unit and a slave unit of the alarm device according to the second embodiment.

FIG. 9 is a diagram showing an internal arrangement of a main alarm of the second embodiment.

FIG. 10 is a diagram illustrating an internal layout of a slave unit according to the second embodiment.

FIG. 11 is a circuit block diagram of a reception alarm unit according to the first and second embodiments.

FIG. 12 is a front view of a reception alarm unit according to the first and second embodiments.

FIG. 13 is an internal layout diagram of a reception alarm unit according to the first and second embodiments.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 solar cell 2 satellite signal receiving antenna 3 FM transmitting antenna 4 connecting cable 5 storage battery 6 sliding down sensor 7 system controller 8 malfunction prevention circuit 9 FM transmitting circuit 10 relay circuit 11 timer circuit 12 GPS 13 water sensor 14 AND circuit 15 strain sensor 16 wire Type switch 17 FM reception antenna 18 Emergency bell 19 Emergency light 20 Red warning light 21 Danger buzzer 22 Yellow danger light 23 Power switch 24 Buzzer switch 25 FM reception circuit 26 Signal decoding circuit 27 Slip sensor relay circuit 28 Water sensor relay circuit

Claims (1)

[Utility model registration claims] 1. A landslide debris flow generation alarm that combines a radio transmitter equipped with a GPS position satellite radio wave receiver and a strain sensor or a wire type switch as a moisture sensor, and a radio receiver equipped with an alarm light and an alarm buzzer.