Flooding warning system and flooding warning method

Abstract

The invention discloses a flooding alarm system and a flooding alarm method. The flooding alarm system comprises a sensing device and an alarm device. The sensing device is provided with a waterproof shell and a containing space and used for detecting the height of accumulated water flowing into the containing space through a plurality of water inlet holes in the waterproof shell. The sensing device stores a plurality of instructions respectively corresponding to a plurality of flooding heights, and outputs an instruction corresponding to the flooding height in response to detecting that the height of the accumulated water flowing into the accommodating space accords with one of the flooding heights. And the alarm device is in wireless communication with the sensing device, responds to the received instruction output by the sensing device, and executes an alarm program corresponding to the instruction. Therefore, the alarm device and the sensing device of the flooding alarm system provided by the invention are separated, and the alarm device can execute alarm programs of different levels according to different heights of accumulated water detected by the sensing device.

Description

Technical Field

[0001] This invention relates to a flood alarm system, and more particularly to a flood alarm system in which the alarm device and the sensing device are separated, and the alarm device can execute different levels of alarm procedures according to the different heights of water accumulation detected by the sensing device. Background Technology

[0002] Current flood warning devices typically consist of a flood sensor near the ground and an alarm on top. This makes it difficult to balance the real-time detection of flood height with the recognizability of flood warnings. While placing them in low-lying areas can immediately detect flood height, the alarms are difficult for people to recognize. Conversely, placing them in high, conspicuous locations fails to effectively detect flood levels in the immediate aftermath of flooding. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to provide a flood alarm system and a flood alarm method that address the shortcomings of the prior art. The alarm device and the sensing device are separated, and the alarm device can execute different levels of alarm procedures according to the different heights of water accumulation detected by the sensing device.

[0004] To address the aforementioned technical problems, one technical solution adopted by the present invention is to provide a flood alarm system, comprising a sensing device and an alarm device. The sensing device has a waterproof housing and a receiving space, and is configured to detect the height of water flowing into the receiving space through multiple water inlets on the waterproof housing. The sensing device stores multiple commands corresponding to multiple flood heights, and in response to detecting that the height of water flowing into the receiving space matches one of the flood heights, outputs the command corresponding to the flood height. The alarm device and the sensing device communicate wirelessly. The alarm device stores multiple alarm programs corresponding to the multiple commands, and is configured to execute the alarm program corresponding to the command in response to receiving a command output by the sensing device.

[0005] Furthermore, the plurality of alarm procedures include a first alarm procedure, a second alarm procedure, and a third alarm procedure, wherein the first alarm procedure includes sending a flood notification to an electronic device, the second alarm procedure includes generating a first warning sound, and the third alarm procedure includes generating a second warning sound different from the first warning sound.

[0006] Furthermore, the second alarm procedure and the third alarm procedure also include sending a flood alarm to a host computer.

[0007] Furthermore, the flood alarm system also includes a server connected to the host via the Internet and configured to provide a real-time image to the host, wherein the real-time image is acquired by a network camera located adjacent to the sensing device.

[0008] Furthermore, the host or the electronic device also controls a disaster prevention device through the server to perform a disaster prevention measure.

[0009] Furthermore, the alarm device is also configured to record the flood notification.

[0010] Furthermore, the sensing device includes one or more of an infrared water level detector, a water conductivity sensor, and a float sensor to detect the height of the accumulated water flowing into the accommodating space.

[0011] Furthermore, the alarm device and the sensing device communicate wirelessly via a radio frequency module, Bluetooth module, or Wi-Fi module.

[0012] Furthermore, the alarm device and the sensing device are grouped through a pairing module. The alarm device responds to the command issued by the sensing device in the same group and executes the alarm program corresponding to the command.

[0013] Furthermore, the alarm device and the sensing device each have a power module, which is a solar cell, used to generate electricity to drive the alarm device and the sensing device.

[0014] To address the aforementioned technical problems, another technical solution adopted by the present invention is to provide a flood alarm method. The flood alarm method includes the following steps: configuring a sensing device having a waterproof housing and a accommodating space to detect the height of water flowing into the accommodating space through multiple water inlets on the waterproof housing; the sensing device storing multiple commands corresponding to multiple flood heights; configuring the sensing device to output a command corresponding to the detected water height flowing into the accommodating space to an alarm device in response to detecting that the water height meets one of the flood heights; the alarm device and the sensing device communicating wirelessly, and storing multiple alarm programs corresponding to the multiple commands; and configuring the alarm device to execute the alarm program corresponding to the command in response to receiving the command output by the sensing device.

[0015] Furthermore, the plurality of alarm procedures include a first alarm procedure, a second alarm procedure, and a third alarm procedure, wherein the first alarm procedure includes sending a flood notification to an electronic device, the second alarm procedure includes generating a first warning sound, and the third alarm procedure includes generating a second warning sound different from the first warning sound.

[0016] Furthermore, the second alarm procedure and the third alarm procedure also include sending a flood alarm to a host computer.

[0017] Furthermore, the flood alarm method further includes: a server connected to the host via the Internet and configured to provide a real-time image to the host for monitoring, wherein the real-time image is acquired by a network camera located adjacent to the sensing device.

[0018] Furthermore, the host or the electronic device also controls a disaster prevention device through the server to perform a disaster prevention measure.

[0019] Furthermore, the alarm device is also configured to record the flood notification.

[0020] Furthermore, the sensing device includes one or more of an infrared water level detector, a water conductivity sensor, and a float sensor to detect the height of the accumulated water flowing into the accommodating space.

[0021] Furthermore, the alarm device and the sensing device communicate wirelessly via a radio frequency module, Bluetooth module, or Wi-Fi module.

[0022] Furthermore, the alarm device and the sensing device are grouped through a pairing module. The alarm device responds to the command issued by the sensing device in the same group and executes the alarm program corresponding to the command.

[0023] Furthermore, the alarm device and the sensing device include a power module, which is a solar cell, for generating electricity to drive the alarm device and the sensing device.

[0024] To further understand the features and technical content of the present invention, please refer to the following detailed description and drawings of the present invention. However, the drawings provided are for reference and illustration only and are not intended to limit the present invention. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the flood alarm system of the present invention.

[0026] Figure 2 for Figure 1 A schematic diagram of the sensing device.

[0027] Figure 3 A schematic diagram illustrating the use of a water conductivity sensor in a sensing device to detect the height of water flowing into a containment space.

[0028] Figure 4 A schematic diagram illustrating the use of an infrared water level detector for a sensing device to detect the height of water flowing into a containment space.

[0029] Figure 5This is a schematic diagram of the group transmission of the flood alarm system of the present invention.

[0030] Figure 6 This is a flowchart of the flood alarm method of the present invention. Detailed Implementation

[0031] The following specific examples illustrate the implementation of the "flood alarm system and flood alarm method" disclosed in this invention. Those skilled in the art can understand the advantages and effects of this invention from the content disclosed in this specification. This invention can be implemented or applied through other different specific embodiments, and various details in this specification can also be modified and changed based on different viewpoints and applications without departing from the concept of this invention. Furthermore, the accompanying drawings of this invention are for simple illustrative purposes only and are not depictions of actual dimensions; this is stated beforehand. The following embodiments will further describe the relevant technical content of this invention in detail, but the disclosed content is not intended to limit the scope of protection of this invention.

[0032] It should be understood that while terms such as "first," "second," and "third" may be used in this document to describe various components or signals, these components or signals should not be limited by these terms. These terms are primarily used to distinguish one component from another, or one signal from another. Furthermore, the term "or" as used herein should, as appropriate, include any combination of one or more of the related listed items.

[0033] Please see Figure 1 and Figure 2 , Figure 1 This is a schematic diagram of the flood alarm system of the present invention. Figure 2 for Figure 1 A schematic diagram of the sensing device.

[0034] like Figures 1 to 2 As shown, this embodiment of the invention provides a flood alarm system 1. The flood alarm system 1 includes a sensing device 10 and an alarm device 20. Figure 2 As shown, the sensing device 10 has a waterproof housing 11 and a receiving space 12, and is configured to detect the height of water flowing into the receiving space 12 through a plurality of water inlets 110 on the waterproof housing 11.

[0035] Furthermore, the sensing device 10 stores multiple instructions corresponding to multiple flooding heights, and when the height of the water flowing into the accommodating space 12 is detected to match one of the flooding heights, the sensing device 10 outputs the instruction corresponding to that flooding height. In this embodiment, the sensing device 10 may store three instructions S1 to S3 corresponding to three flooding heights L1 to L3. For example, the first flooding height L1 is 3 cm, the second flooding height L2 is 6 cm, and the third flooding height L3 is 10 cm. However, the present invention is not limited to the examples given above. Therefore, when the height of the water flowing into the accommodating space 12 is detected to match the first flooding height L1, the sensing device 10 outputs the first instruction S1, and when the height of the water flowing into the accommodating space 12 is detected to match the second flooding height L2, the sensing device 10 outputs the second instruction S2. In addition, when the height of the water flowing into the accommodating space 12 is detected to match the third flooding height L3, the sensing device 10 outputs the third instruction S3.

[0036] The alarm device 20 communicates wirelessly with the sensor device 10. Specifically, the alarm device 20 and the sensor device 10 can communicate wirelessly via a radio frequency module, Bluetooth module, or Wi-Fi module, allowing the sensor device 10 and the alarm device 20 to be installed separately. The wireless communication module of this invention can receive various radio wave sources, not limited to the listed wireless communication modules. Therefore, the sensor device 10 can be installed in low-lying, flood-prone areas, without being limited by the inability to effectively alert pedestrians and vehicles due to its low installation location. Furthermore, the alarm device 20 can be installed in a high and conspicuous location, without being limited by the inability to detect flooding in the first instance. For example, the sensor device 10 installed in an underpass detects the height of the accumulated water and outputs a command to the alarm device 20 on the ground. The alarm device 20 immediately issues a flood alarm, reminding pedestrians and vehicles not to enter the flooded area, reducing casualties caused by the disaster.

[0037] Furthermore, the alarm device 20 stores multiple alarm programs corresponding to multiple instructions, and is configured to execute the alarm program corresponding to the instruction received from the sensor device 10. In this embodiment, the multiple alarm programs stored in the alarm device 20 include a first alarm program P1, a second alarm program P2, and a third alarm program P3 corresponding to the first instruction S1, the second instruction S2, and the third instruction S3, respectively.

[0038] The first alarm procedure P1 includes sending a flood notification M1 to the electronic device ED. Therefore, upon receiving the first instruction S1 output by the sensor device 10, the alarm device 20 executes the first alarm procedure P1 to send a flood notification M1 to the electronic device ED. The electronic device ED in this embodiment can be, for example, but is not limited to, a mobile device. The flood notification M1 in this embodiment can be a text message describing flood-related information. For example, sending a flood notification M1 to car owners in nearby areas to remind them to move their vehicles to higher ground can reduce property damage. In addition, the alarm device 20 can also be configured to record flood notifications, particularly those sent to the electronic device ED, to facilitate the clarification of responsibility after a disaster.

[0039] The second alarm procedure P2 includes generating a first warning sound. Therefore, when the second command S2 output by the sensor device 10 is received, the alarm device 20 executes the second alarm procedure P2 to generate the first warning sound. In this embodiment, the first warning sound can be a voice broadcast or a low-to-mid-frequency sound. Additionally, the third alarm procedure P3 includes generating a second warning sound different from the first warning sound. Therefore, when the third command S3 output by the sensor device 10 is received, the alarm device 20 executes the third alarm procedure P3 to generate a second warning sound different from the first warning sound. In this embodiment, the second warning sound can be a high-decibel voice broadcast or a high-frequency sound. Thus, the present invention can generate different warning sounds according to different flood levels, allowing personnel to identify the severity of the disaster through the warning sounds.

[0040] Furthermore, the first and second warning sounds are generated by a buzzer or speaker, and the audio format includes voice notifications, melodies, or monotone audio. To improve the recognizability of the flood alarm and effectively remind pedestrians not to enter flooded areas, the flood alarm sound of the alarm device 20 is set differently from the warning sounds of the surrounding environment. Specifically, if the alarm device 20 is installed near public transportation, such as the entrance of an underground subway station, the flood alarm sound must exclude bird calls or siren-like sirens within the subway station to effectively remind pedestrians not to enter flooded areas.

[0041] The alarm device 20 of the present invention can also control the warning light (not shown) to emit different colored lights according to different flood levels. For example, the first alarm procedure P1 can also include controlling the warning light to emit a blue light, and the second alarm procedure P2 can also include controlling the warning light to emit a yellow light. In addition, the third alarm procedure P3 can also include controlling the warning light to emit a red light. Thus, this embodiment can also use red, yellow and blue lights to correspond to different flood levels to remind pedestrians or vehicles not to enter flooded areas. However, this embodiment only uses audio and light signals as examples, and the present invention does not limit the warning methods generated by the alarm device 20.

[0042] Furthermore, the second alarm procedure P2 and the third alarm procedure P3 may also include sending a flood alarm M2 to the host H. In this embodiment, the host H is a computer in an emergency response center with authority to control disaster prevention equipment. Such an emergency response center may be a water resources unit, a central disaster prevention center, or a transportation control center. When the water level meets the second flood height L2 and the third flood height L3, the accumulated water poses a serious hazard. At this stage, the alarm device 20 can notify the emergency response center to implement disaster prevention measures.

[0043] Based on the above, the flood alarm system 1 of this embodiment may further include a server 30, which is connected to the host H via the Internet 40 and configured to provide real-time images to the host H. The real-time images are obtained by network cameras EC installed in the vicinity of the sensing device 10. In addition, the host H or electronic device ED can control the disaster prevention equipment DP through the server 30 to perform disaster prevention measures. For example, the disaster prevention equipment is a sluice gate or a pumping motor, and the host H or electronic device ED can control the sluice gate or start the pumping motor through the server 30. That is, the server 30 can be configured to provide the host H with real-time images obtained by the network cameras EC, so that the response center can monitor through the real-time images, and after the response center confirms flooding through the real-time images, the host H or electronic device ED can control the sluice gate or start the pumping motor through the server 30. The server 30 of this embodiment also includes an application server, and the application on the host H or electronic device ED can be connected to the application server to remotely control the sluice gate or start the pumping motor.

[0044] Next, the specific embodiments of the waterproof housing 11 and the accommodating space 12 of the sensing device 10 will be further described below. For example... Figure 2 As shown, the waterproof housing 11 is hollow, cylindrical or tubular in shape, making it easy for the sensor 10 to be attached to sturdy pillars such as utility poles, traffic lights, and streetlights in low-lying areas, preventing it from being washed away by rainwater. The waterproof housing 11 has multiple water inlets 110. The water inlets 110 are located at the end of the waterproof housing 11 closest to the ground. The water inlets 110 penetrate the waterproof housing 11, allowing the housing space 12 to communicate with the external environment. The sensor 10 collects accumulated water through the water inlets 110 at the end closest to the ground. The size of the water inlets 110 can be adjusted according to the environment in which the sensor 10 is placed; that is, the size can be adjusted according to the size of foreign objects that are easily generated in the environment where the sensor 10 is placed, making the water inlets 110 less likely to be blocked by environmental debris and lose its flood detection function.

[0045] The waterproof housing 11 is made of polyvinyl chloride (PVC). The accommodating space 12 also includes a partition 121, which, together with the waterproof housing 11, forms a space. This space is located on the side of the waterproof housing 11 away from the ground and is used to house a sensor or detector. The sensing device 10 includes one or more of an infrared water level detector, a water conductivity sensor, and a float sensor. The aforementioned sensor or detector is located on the side of the waterproof housing 11 away from the ground, i.e., within the space formed by the partition 121 and the waterproof housing 11, with the detection components of the sensor or detector exposed in the space to detect the water level in the accommodating space 12. This space is isolated from the accommodating space 12 to prevent water from the accommodating space 12 or external rainwater from entering and causing the sensing device 10 to malfunction or misdetect.

[0046] Please see Figure 3 and Figure 4 , Figure 3 A schematic diagram illustrating the use of a water conductivity sensor in a sensing device to detect the height of water flowing into a containment space. Figure 4 A schematic diagram illustrating the use of an infrared water level detector for a sensing device to detect the height of water flowing into a containment space.

[0047] like Figure 3 As shown, as the water flowing into the accommodating space 12 increases, when the water touches the detection component of the water conductivity sensor SR1, the detection component is activated to determine the water level. However, the operation of the float-type sensor is similar to that of the water conductivity sensor SR1, so it will not be described in detail here.

[0048] like Figure 4 As shown, when water enters the accommodating space 12 through the inlet hole 110, the infrared water level detector SR2 sends infrared rays to the accommodating space 12, and calculates the return time of the infrared rays reflected or refracted by the water surface to obtain the height of the water.

[0049] Further describing the alarm device 20, in this embodiment, the alarm device 20 includes a buzzer and a warning light, which serve as a warning through light and sound. The alarm device 20 also includes another indoor alarm (not shown in the figure), which wirelessly communicates with the alarm device 20 to expand the range of flood warning notification. The indoor alarm can be installed indoors. For example, the indoor alarm can be installed in the neighborhood chief's office or the community security guard's room, etc., to immediately notify nearby residents to take disaster response measures.

[0050] In this embodiment, the alarm device 20 and the sensor device 10 are grouped through the pairing module 13. The alarm device 20 responds to commands issued by the sensor devices 10 in the same group and executes the alarm program corresponding to the command. In other embodiments, the flood alarm system 1 may also include multiple sensor devices 10 and multiple alarm devices 20, and these sensor devices 10 and alarm devices 20 can be divided into multiple groups through pairing. The pairing method of the present invention can be one-to-one, one-to-many, many-to-one, or many-to-many, etc. The following description uses one-to-one I and one-to-many II pairing modes. Please refer to... Figure 5 , Figure 5 This is a schematic diagram of the group transmission of the flood alarm system of the present invention. In the one-to-one (I) pairing mode, the sensor 10 with code 1S in the first group transmits a command to the alarm device 20 with code 1A, and the sensor 10 with code 2S in the second group transmits a command to the alarm device 20 with code 2A. In the one-to-many (II) pairing mode, the alarm device 20 with code 1A can also receive commands transmitted by the sensor 10 with code 2S in the second group. In addition to sending commands to the alarm devices 20 within its transmission range, the sensor 10 of the present invention can also transmit commands to alarm devices 20 with a specified group code through the setting of the pairing module 13. The sensor 10 and the alarm device 20 of the present invention are coupled to the pairing module 13 via a serial communication interface. The pairing module 13 provides a pairing code for the sensor 10 and the alarm device 20. Furthermore, to facilitate public identification of flood locations, in the one-to-one (I) pairing mode, multiple alarm devices 20 in the same group can emit different melodies. Furthermore, in pairing modes of one-to-many, many-to-one, or many-to-many, multiple alarm devices 20 from different groups can emit different melodies.

[0051] In this embodiment, both the alarm device 20 and the sensing device 10 have a power module, such as a solar cell or a rechargeable battery, to generate electricity to drive the alarm device 20 and the sensing device 10, so that the alarm device 20 and the sensing device 10 do not need to be connected to an external power supply. The power module of the present invention can be any type of battery, such as a replaceable battery or a stationary battery. However, the examples given above are only one possible embodiment and are not intended to limit the present invention.

[0052] Please refer to the following: Figure 6 , Figure 6 This is a flowchart of the flood alarm method of the present invention. Figure 6 As shown, this embodiment of the invention provides a flood alarm method, which uses... Figure 1 The sensing device 10 and the alarm device 20 include the following steps:

[0053] S10: The sensor 10 is configured to detect the height of water flowing into the accommodating space 12 through multiple water inlets 110 on the waterproof housing 11. The sensor 10 stores multiple instructions corresponding to the multiple flooding heights.

[0054] S20: The sensor 10 is configured to respond to the detection that the height of the water flowing into the accommodating space 12 matches one of the flooding heights, and outputs a command corresponding to the flooding height to the alarm device 20. The alarm device 20 and the sensor 10 communicate wirelessly and store multiple alarm programs corresponding to multiple commands respectively.

[0055] S30: Configure the alarm device 20 to execute the alarm procedure corresponding to the command received from the sensor device 10. Since the relevant content has been explained in the preceding paragraphs, it will not be repeated here.

[0056] Beneficial effects of the embodiments:

[0057] One of the beneficial effects of the present invention is that the flood alarm system and flood alarm method provided by the present invention can separate the alarm device from the sensor device through the following technical means: "wireless communication between the alarm device and the sensor device", "the sensor device stores multiple instructions corresponding to multiple flood heights, and outputs the instruction corresponding to the flood height in response to detecting that the height of the water flowing into the containment space meets one of the flood heights", and "the alarm device stores multiple alarm programs corresponding to multiple instructions, and is configured to execute the alarm program corresponding to the instruction output by the sensor device in response to receiving the instruction". The alarm device can execute different levels of alarm programs according to the different heights of water detected by the sensor device.

[0058] The content disclosed above is only a preferred and feasible embodiment of the present invention, and is not intended to limit the scope of protection of the claims of the present invention. Therefore, all equivalent technical changes made based on the content of the present invention specification and drawings are included within the scope of protection of the claims of the present invention.

Claims

1. A flood alarm system, characterized in that, The flood warning system includes: A sensing device having a waterproof housing and a receiving space, configured to detect a height of water flowing into the receiving space through a plurality of water inlets on the waterproof housing, wherein the sensing device stores a plurality of commands corresponding to a plurality of flooding heights, and in response to detecting that the height of the water flowing into the receiving space matches one of the flooding heights, outputs the command corresponding to the flooding height; and An alarm device is wirelessly connected to the sensing device, wherein the alarm device stores multiple alarm programs corresponding to multiple instructions, and is configured to execute the alarm program corresponding to the instruction in response to receiving the instruction output by the sensing device.

2. The flood alarm system according to claim 1, characterized in that, The plurality of alarm procedures include a first alarm procedure, a second alarm procedure, and a third alarm procedure, wherein the first alarm procedure includes sending a flood notification to an electronic device, the second alarm procedure includes generating a first warning sound, and the third alarm procedure includes generating a second warning sound different from the first warning sound.

3. The flood alarm system according to claim 2, characterized in that, The second alarm procedure and the third alarm procedure also include sending a flood alarm to a host computer.

4. The flood alarm system according to claim 3, characterized in that, The flood warning system also includes: A server is connected to the host via the Internet and is configured to provide a real-time image to the host, wherein the real-time image is acquired by a network camera located in proximity to the sensing device.

5. The flood alarm system according to claim 4, characterized in that, The host or the electronic device also controls a disaster prevention device through the server to perform a disaster prevention measure.

6. The flood alarm system according to claim 2, characterized in that, The alarm device is also configured to record the flood notification.

7. The flood alarm system according to claim 1, characterized in that, The sensing device includes one or more of an infrared water level detector, a water conductivity sensor, and a float sensor to detect the height of the accumulated water flowing into the containment space.

8. The flood alarm system according to claim 1, characterized in that, The alarm device and the sensing device communicate wirelessly via a radio frequency module, Bluetooth module, or Wi-Fi module.

9. The flood alarm system according to claim 1, characterized in that, The alarm device and the sensing device are grouped through a pairing module. The alarm device responds to the command issued by the sensing device in the same group and executes the alarm program corresponding to the command.

10. The flood alarm system according to claim 1, characterized in that, The alarm device and the sensing device each have a power module, which is a solar cell used to generate electricity to drive the alarm device and the sensing device.

11. A flood alarm method, characterized in that, The flood warning method includes: A sensing device is configured with a waterproof housing and a receiving space to detect a height of water flowing into the receiving space through a plurality of water inlets on the waterproof housing, wherein the sensing device stores a plurality of instructions corresponding to a plurality of flooding heights. The sensing device is configured to, in response to detecting that the height of the water flowing into the accommodating space conforms to one of the flooding heights, output the command corresponding to the flooding height to an alarm device, wherein the alarm device and the sensing device communicate wirelessly and store multiple alarm programs corresponding to multiple commands; and The alarm device is configured to execute the alarm procedure corresponding to the instruction received from the sensing device.

12. The flood alarm method according to claim 11, characterized in that, The plurality of alarm procedures include a first alarm procedure, a second alarm procedure, and a third alarm procedure, wherein the first alarm procedure includes sending a flood notification to an electronic device, the second alarm procedure includes generating a first warning sound, and the third alarm procedure includes generating a second warning sound different from the first warning sound.

13. The flood alarm method according to claim 12, characterized in that, The second alarm procedure and the third alarm procedure also include sending a flood alarm to a host computer.

14. The flood alarm method according to claim 13, characterized in that, The flood warning method also includes: A server is connected to the host via the Internet and is configured to provide a real-time image to the host for monitoring, wherein the real-time image is acquired by a network camera located adjacent to the sensing device.

15. The flood alarm method according to claim 14, characterized in that, The host or the electronic device also controls a disaster prevention device through the server to perform a disaster prevention measure.

16. The flood alarm method according to claim 12, characterized in that, The alarm device is also configured to record the flood notification.

17. The flood alarm method according to claim 11, characterized in that, The sensing device includes one or more of an infrared water level detector, a water conductivity sensor, and a float sensor to detect the height of the accumulated water flowing into the containment space.

18. The flood alarm method according to claim 11, characterized in that, The alarm device and the sensing device communicate wirelessly via a radio frequency module, Bluetooth module, or Wi-Fi module.

19. The flood alarm method according to claim 11, characterized in that, The alarm device and the sensing device are grouped through a pairing module. The alarm device responds to the command issued by the sensing device in the same group and executes the alarm program corresponding to the command.

20. The flood alarm method according to claim 11, characterized in that, The alarm device and the sensing device include a power module, which is a solar cell, to generate electricity to drive the alarm device and the sensing device.

Images