Water level observation system using LPWA (LoRa) (IoT-type water level gauge)
- SkyManhole monitors water levels and other conditions in sewer pipes at low cost and over a wide area. - It is an IoT sensor system that can be integrated into the underside of manhole covers. - It enables early detection of urban flooding and pinpointing the sources of inflow during rainy weather. 【Features】 ■ Low power consumption and long operating time By utilizing LPWA (Low Power Wide Area) for low power consumption and switching communication frequency according to water levels in the pipe, we have achieved long operating times (approximately 3 years on battery power) by reducing power consumption during normal conditions. ■ Wide range of water level information collection We have demonstrated wireless communication from manhole covers up to about 1 km. By installing relay devices, the transmission distance can be extended to about 3 km, allowing for the collection of water level information over a wide area of approximately 4 km (subject to variations based on site conditions). ■ Low cost and short-term installation Since it does not require power supply work or specialized manhole covers, it can be implemented at low cost and in a short period of time. Additionally, by utilizing frequency bands that do not require a license, there are no communication fees, which reduces running costs. ■ Security High security is ensured through proprietary transmission specifications that do not use the internet and data encryption, among other measures.
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basic information
**System Implementation Effects** The observation method supports two types: offline and real-time. You can choose between two system configurations: real-time observation and offline observation. Real-time observation transmits water level data from sensor nodes via LPWA wireless communication to a cloud server through a gateway. This allows for constant monitoring of water level information without having to visit the site, enabling early detection of urban flooding caused by localized heavy rainfall, which can expedite the establishment of alert systems and optimize the operation of stormwater management facilities. Offline observation allows for receiving water level data accumulated in sensor nodes via LPWA wireless communication using devices such as tablets or PCs, without entering the sewer pipes during site inspections. This can be utilized to efficiently understand the actual conditions of unknown water during investigations and to develop medium- to long-term countermeasure plans based on this information. *For more details, please refer to the PDF materials or feel free to contact us.*
Price range
P4
Delivery Time
P4
Applications/Examples of results
For more details, please refer to the PDF document or feel free to contact us.
Detailed information
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Sensor node, environmental resistance type Can be installed in a dedicated manhole (photo: manhole cover installation), waterproof standard equivalent to IP68 Built-in battery operating life: 3 years (gateway notification: 100 notifications per day at 1-minute intervals, other notifications at 1-hour intervals)
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Sensor Node General Type (Economical Version) Built-in Battery Operating Life: 3 years (Gateway Notification: 100 notifications per day at 1-minute intervals, other notifications at 1-hour intervals)
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Water Level Gauge General Purpose Type Measurement Range 0 to 10m Sensor Diameter 30mm, Made of Stainless Steel
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Water level gauge, small diameter type Measurement range 0 to 2m, sensor diameter 17.5mm, made of titanium
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Outdoor Gateway Sends water level information from each sensor node to LTE/3G or Wi-Fi (compatible with NTT Docomo) with waterproof performance equivalent to IP65.
Line up（5）
| Model number | overview |
|---|---|
| Sensor Node Environmentally Resistant Type | Can be installed in a dedicated manhole, waterproof standard equivalent to IP68 |
| Sensor Node General Purpose Type | General version (economical version), waterproof performance equivalent to IP67 |
| Water Level Meter General Purpose Type | Measurement range 0 to 10m Sensor part diameter 30mm, made of stainless steel |
| Water Level Meter Small Diameter Type | Measurement range 0 to 2m, sensor part diameter 17.5mm, made of titanium |
| Outdoor Gateway | Sends water level information from each sensor node to LTE/3G or Wi-Fi, waterproof performance equivalent to IP65 |
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Company information
At NJS Corporation, we primarily provide technology and services to build safe and stable water supply systems as a partner to businesses, ranging from planning, research, and formulation of plans to asset and financial management, support for the introduction of information systems and PFI, as well as design, supervision, and operational support for facilities. Additionally, we also make proposals regarding the most suitable development and management for the region, taking into account the functions and characteristics of the sewerage system.
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