FallGravity

https://www.youtube.com/watch?v=-L6l1fFdWs4

https://github.com/GadCoder/DeslyPeru

DeslyPerú is an application that is responsible for providing the user with information about the landslides that occur in their community and vulnerable areas. For this, DeslyPerú makes use of the data provided by 5 sensors incorporated in the land buoys that communicate via directional antennas with the Risk Institution of the municipality of the locality, allowing higher performance and less data interference compared to other antennas.

On the other hand, we have placed a news section within the DeslyPerú application in order to provide the user with information about what is happening in their locality in real time. In addition, to increase the precision in the landslide prediction, we have an "emergency report" section in the app, where each user can share their GPS location and report the landslide that they see.

For the right functioning of DeslyPerú we have various elements, each one with its own specific function but interdependent for its operation. These elements are the following:

Global model satellite LHASA

This Landslide Risk Assessment for Situational Awareness (LHASA) model provides us with the necessary data to determine where, when and how this natural disaster would occur. LHASA combines satellite-based precipitation estimates with a landslide susceptibility map taking into account information on latitude and altitude, slopes, geology, fault zones, and forest losses.

It also works with the precipitation data from the Global Precipitation Measurement (GPM) mission to use the precipitation conditions of the last 7 days. In other words, this model works based on two factors, precipitation and susceptibility, if the values ​​of them turn out to be moderate to very high then a forecast is issued of the places where a landslide is most likely to occur. 

All these results remain in the LHASA database, which is why we´re going to use this database to identify at the local, regional and national levels vulnerable areas to landslides, thus increasing the accuracy of the app. Desly Peru.

Land buoys

The land buoy will have the function of collecting and sending the data from the sensors implemented in them. For the manufacture of the buoy, linear low-density polyethylene based on a hexene copolymer (LLPDE) will be used in order to obtain a material with greater resistance to traction and perforation.

Buoy structure

The territorial buoy is going to be analogous to a marine buoy. Therefore, it has the following parts: a main buoy, a secondary buoy, a secondary buoy-to-main buoy joining structure, a solar panel, a wind turbine, a mast, a light signaling and finally a safety signaling. Figure 1.

Main chamber: The land buoy will have an empty chamber located in the center, where the energy received by the solar panel is located and it will also store the data received from the sensors that will be located inside the main chamber. The data transmission will be through communication through EGPRS, whose objective is to achieve a fast and organized transmission, also taking into account the size of our information. With EGPRS we hope that we will be able to receive 384 Kbps and large heavy mobile data with greater efficiency than GPRS.

Solar panel: Since the device will be isolated at one point on the surface, it requires self-sustaining energy. Therefore, the land buoy will have four solar panels that will provide 24 volts and 300 watts that will power 2 of the 4 12 volt batteries located in each buoy, this in order to keep the device active 24 hours a day since to the correct operation of each float consumes 15 to 20 volts.

LGA antenna: The device's antenna is designed to have a good signal emission in high or mountainous terrain. For this, the low gain antenna (LGA) will be used. This is an omnidirectional antenna that features wide radio wave beamwidth. Its use is due to the fact that this type of antenna is suitable for areas of high slopes and in general to all terrain.

Microprocessor: Using a microprocessor such as a raspberry pi, the data from all the sensors will be collected, saving them in a JSON file, which will finally be sent through the LGA antenna.

Sensors: This part is the most important of the device, since they are in charge of measuring physical phenomena. Its operation is based on collecting information on humidity, vibration, temperature and water level. This information will be taken to the integrator program. Likewise, its location will be in the main chamber and some further away depending on the conditions of each sensor to be measured (such as the rain gauge and the vibration sensor that must be on opposite sides for better precision).

Support base: The support base is distinctive to the marine buoy given that they are located on different terrain, in this case it is important to properly support the device in cases where it is attacked by the phenomenon we are trying to alert, weather, loss or theft. For this, the support base will have a trapezoidal shape of radio of 0.185  and 0.277 m and a height of 0.185m. The trunk will be attached to a connector with the main chamber in a cylindrical shape, its radius will be 0.136 m and a height of 0.185 m. 

Figure 1

Sensors on the buoy

As already mentioned, the sensors on the buoy are going to collect information from the different meteorological parameters to detect the risk of a landslide. The sensors convert a physical phenomenon into a measurable analog or even digital voltage. This prototype requires the following sensors for its operation

Thermocouples, RTDs and thermistors: To measure temperature, in this project it is recommended to use thermocouples since they are cheap and have a self-powered system, also having a wide measurement range.

Accelerometers: Reacts to sudden movements, shocks, or vibrations, but not to constant or progressive movements. In the case of detecting a vibration, it generates a digital signal, which ceases at the end of the vibration.In addition, these load sensors are connected to a load type signal conditioner. An even more popular type are IEPE (also known as ICP®) sensors, which have a built-in preamplifier and require a less expensive signal conditioner.

Positioning sensors (GPS): Used to capture longitudinal and latitudinal position based on GPS, GLONASS and other satellite positioning systems. Different GPS sensors with different precision are available.

Watermark Moisture Sensor: Detection of soil moisture, so they can be placed perpendicular or vertically to the soil surface. To place a sensor in deeper installations, a hole must be made previously with a 3-inch drill, and it must also be calibrated.

Rain sensor: A HOBOnet AeroCone wireless rain gauge will be used, which with its sensors is capable of registering 0.2 mm increments of precipitation and also has a power supply through a solar panel.

Finally, the detailed information for each buoy, together with the information provided by the population through the app are sent to the control center of the Risk Institution, which will be located in the municipality of the town. They are in charge of receiving and analyzing the data recorded in real time, updating the information in the DeslyPerú app remotely.

DeslyPeru

The DeslyPerú device is the means of communication of the population where the land buoys are located and the control center of the Risk Institution that will be located in the municipality of the locality. This device receives the data in real time from the integrating center and also sends data to it, this in order to maintain greater precision and accuracy of the detection time of a landslide.

This application has an innovative and comprehensive interface where we will find 4 sections:

In the main section, as shown in figure 2, we could observe:

Dynamic frame: This frame notifies the messages in real time that the population writes in the DeslyPeru chat, where they report an emergency that is happening in their locality and this information is sent to the integration center of the municipality.

Advice: This button links us to the section "What to do in the event of a landslide?"

Update status: This button links us to the section where the user can send the status of their location.

Chat: This button links us to the section where the user can alert of an emergency that happens and will be visible in the dynamic box immediately.

In the secondary section "What to do?" ,we’re going to find some recommendations on how to act before, during and after the displacement of the land as shown in figure 3.

In the secondary section "Update your local" the user will see three options to categorize the state of his locality in situ, these options are safe, caution and in danger as shown in figure 4.

In the secondary section "Chat with your community" you can see yellow spaces to fill in identification and registration data (Name, DNI and a message that you want to communicate). In addition, there is a button to activate the sending of your current location (“Send”).

Figure 2

Figure 3

Figure 4

Figure 5

In conclusion, DeslyPerú would bring benefits for the populations most prone to landslides, therefore it is expected that States seek specific measures in all sectors, at different scales (thanks to the fact that DeslyPerú's application can be replicated for more places) with respect to to understanding disaster risk, strengthening disaster risk governance and greater preparedness for disaster response as well as reconstruction. All this in order to save the lives of the communities.

https://gpm.nasa.gov/applications/disasters/modeling-landslide-threats-near-realtime: This resource has been used as it provides data on how potential landslide activity is changing around the world.

https://agupubs.onlinelibrary.wiley.com/doi/full/10.1002/2017EF000715: We use this resource because LHASA combines satellite-based precipitation estimates with a landslide susceptibility map derived from information on slopes, geology, road networks, fault zones, and forest loss. Precipitation data from the Global Precipitation Measurement (GPM) mission is used to identify precipitation conditions for the past 7 days.

https://www.ndbc.noaa.gov/dart/brief.shtml: We use this resource because it inspired us in the manufacture of our land buoy.

https://www.spaceapps.earth/: goDaddy, in simple terms, helped us create a domain for free and with it the team page.

https://miro.com/app/board/o9J_lsjgq20=/ : It allowed us to have concentrated information on the project.

It was one of the best experiences, because it allows us to challenge ourselves, meet people of different ages, careers, cultures and nationalities with whom you dare to contribute to a viable solution to current problems. We learned to work as a team, under pressure and many times to get out of the comfort zone to achieve the goals set as a team.

We chose the challenge of identifying risks with scientific communities, because we consider that landslides are a frequent problem and with an inefficient prevention system in many countries like ours, where rural communities are the most affected. Our project has mainly a scientific and social focus. Scientific because it allows a better scientific and specific study of risk areas through land and social buoys through the participation of the population at risk through the DeslyPerú application.

We solved the setbacks and challenges by carrying out mini-groups within the team in which two people were in charge of ensuring compliance with the requirements with a deadline established and agreed between us. In addition, if someone finished what was previously requested, he or she supported those who were in the process of doing it.

We want to thank the organizing member of the event for allowing us to participate in this event and make possible the inclusion of young people in events of this magnitude, as well as my colleagues from “FallGravity” for contributing in the best way and with much. effort for the development. of the project.

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#Artemis

This project has been submitted for consideration during the Judging process.