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Observation Sensorの製品一覧

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What is the JLDN National Lightning Observation Network?

We conduct accurate and reliable lightning observations in real-time, 24 hours a day.

JLDN (Japanese Lightning Detection Network) is a nationwide lightning observation network operated by Franklin Japan. It consists of 31 sensors from Hokkaido to Okinawa, creating an observation network that seamlessly covers all of Japan. The lightning location accuracy of JLDN is below an average positional error of 300 meters, achieving precision comparable to large-scale lightning observation networks such as NALDN (North America) and EUCLID (Europe). 【Examples of Data Utilization】 ■ Social Infrastructure ■ Life Protection ■ Industry ■ Accident Investigation ■ Research Institutions ■ Media *For more details, please refer to the PDF materials or feel free to contact us.

  • Analysis and prediction system
  • Other Management Services
  • Observation Sensor

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IoT-type manhole sensor system "SkyManhole"

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.

  • Other measuring instruments
  • Manhole body
  • Analysis and prediction system
  • Observation Sensor

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Information about JLDN

It enables extensive and high-precision observations and the provision of high-density observational data.

Franklin Japan observes lightning across the entire country of Japan through the world-class lightning observation network JLDN. It is possible to obtain stable and high-precision lightning data over a wide area. In Japan's land areas, the capture rate exceeds 90%, with an average location error of less than 300 meters. 【Features】 ■ A network of sensors installed at 31 locations nationwide ■ Utilizing accurate time information sent from GPS satellites to observe lightning strike location, time, current value, etc. ■ A high-density network with an average of 6 to 7 sensors participating for each lightning strike ■ Minimal decrease in lightning capture rate due to the failure of some sensors ■ Accurate and reliable observations available in real-time 24 hours a day *For more details, please refer to the PDF document or feel free to contact us.

  • Analysis and prediction system
  • Other Management Services
  • Observation Sensor

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[ZEROSAI Case Study] Road Improvement Project Monitoring Precipitation Observation and Forecasting

Install a camera at the top of the slope to monitor the site! A case study of implementation in improvement work.

【Case Study】 ■Purpose - The ground is unstable, and the slope height is 10 meters, so rain measures are essential. - The site office is 10 minutes away by car, making camera monitoring and instructions necessary. - We want to monitor the camera and precipitation observations and forecasts to issue work stoppage orders. ■Effects - Due to the difficulty of securing power, operating the camera with solar energy is very innovative. - A camera was installed at the top of the slope to monitor the entire site. - Alerts could be issued immediately in conjunction with precipitation forecasts. - The day after rain, the site conditions were checked via camera, allowing for rescheduling of holidays. *For more details, please refer to the PDF document or feel free to contact us.

  • Disaster prevention supplies
  • Security cameras and surveillance systems
  • Analysis and prediction system
  • Observation Sensor

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Weather Observation Sensor [Activ Werther Mix]

Automatic alarm system! Download of weather observation CSV data is available.

The "Activ Werther Mix" is a product that observes multiple weather information with a single unit, allowing users to simultaneously view the observed data and on-site images on ActivNet. Temperature, humidity, wind direction, average wind speed (10-minute average), maximum instantaneous wind speed, WBGT, and other latest weather information are displayed as precise values. Additionally, when the weather alarm is set to ON and the values exceed the specified limits, an alarm email will be sent to the registered address. 【Features】 ■ The acquired information is displayed on a single screen of ActivNet ■ Automatic alarm system ■ Download of weather observation CSV data ■ Observable data: wind direction, wind speed, temperature, humidity, atmospheric pressure, WBGT, rainfall, ultraviolet radiation, lightning distance (may not be measurable depending on the product) *For more details, please refer to the related links or feel free to contact us.

  • Information and communication equipment and infrastructure
  • Observation Sensor

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