NST Globalist Co., Ltd.
Inspection work and danger detection in closed spaces “Sensor IoT: SR-APPEAR” ……
NST Globalist Co., Ltd. (Headquarters: Toshima-ku, Tokyo,
Representative Director: Nao Yamamoto) is an experienced
communications equipment manufacturer with a proven track record and knowledge, and is a business in the LPWA (Low Power Wide Area) field. In order to “resolve data communication blank areas”, we are building an environment where data communication can be used in all parts of Japan through an integrated system.
This time, in closed underground spaces such as strong iron-covered manholes and iron doors of machine rooms, we are facing various issues due to the inability to communicate data, and we are facing various issues such as “review of analog regulations” and “labor shortage due to the declining birthrate and aging population.” ” trends, it is essential to shift work that relies on manual labor to the use of DX (digital transformation). For the purpose of these improvements, we have introduced “Sensor IoT Service: SR-APPEAR” on-site, which combines various sensors (data collection) and high-power LPWA wireless (data communication), and confirmed the improvement and significance of inspection work. Ta.
【Current issues】
・It is difficult to realize data communication from underground space to above ground using common communication methods.
・The underground space is not filled with gas and the safety has not been confirmed before entering the facility.
・If the site is far away or the sites are far apart, manual site patrols are inefficient.
・The health status of on-site workers cannot be monitored at all times, and managers are unaware of unexpected situations.
・If inspection workers are forced to go around the site due to a lack of manpower, it will be considered overwork.
・Manual patrol and inspection work wastes time and effort, and leads to human error.
・A road use permit is required for above-ground work near manholes.
[Image 1: https://prtimes.jp/i/93995/19/resize/d93995-19-a9a032a97d8ed417bfda-0.png&s3=93995-19-bb586dfdf197e9b00d07b9f709863d4f-967×529.png ]
[Background of provision]
There are many important underground facilities in Japan that support social infrastructure (electricity, gas, water, sewage, etc.). In the future, the infrastructure developed after the period of high economic growth will become obsolete. Facilities located in underground spaces are frequently used, and regular inspections by facility managers are important to ensure stable maintenance, but the necessary expenses are constant and are a heavy burden on management companies. In addition, when a problem occurs, responding to and repairing it is an urgent matter, and there are always issues such as arranging workers and transportation to the site. Therefore, by efficiently conducting daily maintenance and management by facility managers, and by storing trend data on the operational status and condition of equipment and detecting signs of failure, maintenance methods can be established to optimize the way inspection work is carried out. Management is required.
This system “SR-APPEAR” is equipped with various sensors suitable for equipment monitoring items, and uses 250mW high-power LoRa wireless that can penetrate iron lids to acquire sensor data at regular intervals to monitor the equipment’s operating status and detect abnormal values. When measured, an alert email will be sent to the administrator. In addition, the stored sensor data can be used to predict trends in deterioration over time and predict failure signs. You can save labor in inspection work and improve work safety. [Usage configuration image]
[Image 2: https://prtimes.jp/i/93995/19/resize/d93995-19-2dad47da9b5bcacaebe9-1.png&s3=93995-19-211befc1c6c0f9e5cfabf52acb108820-834×578.png ]
[Service features]
In addition to being used in places where data communication is not possible, such as underground spaces, mountainous areas, and tunnels, it can also meet requests for realizing data communication in wide areas such as manufacturing sites and multi-story building facilities. We are building a “sensor IoT” system that flexibly combines data communications and sensor devices.
1. Data communication initiatives
・LPWA (Private LoRa) high output 250mW wireless
→ Data communication can be achieved by passing through sturdy iron-covered manholes and other shielding objects.
・NSTG’s unique technology: 12-stage relay station hop function and line-of-sight distance of 10km
→ It is possible to build a private wireless network that covers a wide area with only a small communication fee.
・NSTG does not stick to private LoRa. Development experience in all data communications
→ We construct the optimal communication system for the site, such as satellite communication and LTE communication (mobile phone network).
2. Sensor device initiatives
・Effective use of commercially available Bluetooth devices
→ Bluetooth uses LoRa communication to compensate for operational constraints such as short-range communication and dedicated service contracts.
・Wearable terminal
→ Understand worker health management without using smartphones. ・Obtain equipment operation data using all kinds of sensors (analog, digital) → Analog sensor: 4-20mA, 0-5V *General data output specifications → Digital sensor: Voltage-free contact
→ RS232C/485: PLC (programmable logic controller), personal computer, serial measuring instrument, etc.
・Digital measurement by retrofitting to existing pressure gauges → Achieved by simply attaching a magnet to the pointer shaft and replacing the glass with the resin glass integrated sensor unit. ・Still image data transfer
→ Realizes still image transfer using high image compression technology and unique transfer *Target service is SR-IMAGE
3.250mW compatible products
Our SpreadRouter series (SperadRouter-MW, SpradRouter-A, SpradRouter-TW) is 20mW (specified low power radio station: license not required) and 250mW wireless high output model (land mobile station: application permission)
Compatible with 2 models.
More details about this release:
https://prtimes.jp/main/html/rd/p/000000019.000093995.html