[Introduction]

Access to clean water can transform human lives. In many aspects, clean water and the economy are highly intertwined, providing safe drinking water can retain population’s health and productivity. Additionally, saltwater intrusion may also cause contamination in water source. We are planning to monitor the intrusion level to further guarantee our water security. We also add in the element of preserving biodiversity in the water, by monitoring the quality of the water and the existing species in the waterway. With our current technology, there are no existing products to get real-time data to react in time when the above situation happens, but this innovation makes the difference. With the installation of our innovated device, we are able to visualize the real time data for future projection and risk management. The system is programmed to send out a warning to the client’s device when it arrives at concerned level of each parameter. The expansion of this device can be machine learning to make future projection or AI to make decision on whether we should shut off a certain water station to prevent unclean water intrusion.

These has derived into our objectives:
i) To monitor the quality of water source
ii) To determine the salt intrusion level
iii) To maintain the biodiversity in the water

To achieve the objectives, the parameters that we are taking in are pH, temperature, salinity, and turbidity.

[How it works]

Workflow of the device from sensors to data result is explained in Figure 1. The components that we need are a microcontroller, sensors, GSM module, solar panel, powerbank and breadboard. After the sensors read the data, it will be sent to microcontroller to interpret. GSM module will house a simcard from local service provider to enable internet access. When microcontroller received the data, it will be sent to our hosting platform to generate a graphical user interface for data visualization and analysis. In the event where water condition is at alarming level, for instance, unsuitable pH level is detected from the river, we can program it to send out SMS to our client’s mobile phone to make immediate response. The location of the device at the estuaries and furthest tidal propagation point is stated in Figure 2. We are still open to consider all suitable platforms for data analysis and visualization.

All the component listed are highly manufacturable, cheap and easily available online.

[Design]

We design our device to be submerged. Waterproof housing standard IP68 will be made to cover the whole interior electronics and battery, IP68 wire connector will also be used to connect to the solar panel. The sensors are located at the bottom and will be covered with screening layer to protect the sensors from the attack of river lives or solids in the river. The physical design of the device would be dark in color to minimize the disturbance to the river. Our device will be powered by Lithium-Ion for daily operation and will be charged by solar panel during the day time.

The whole device will be installed at the side of the river and as close as possible to the river bed. Stakes will be installed on the dock so it penetrates and grips the soil in the river to stand against the flow. Upon hammering the stakes into the soil, the device will be screwed tightly on the dock. GPS will be installed to track the exact location for maintenance purposes.

Inspiration

These are the problems faced by our local community, we wish to get recognition and comment from experts to improve our product idea. We also aim to get funding to pilot the project in our community area, and expand it to anywhere that needs it after the idea is matured.

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