エヌケーシステム List of Products and Services

In recent years, among renewable energy generation facilities, solar power plants have been expanding in scale. However, as the scale increases, management becomes very difficult, and incidents such as the theft of power cables are occurring frequently. Additionally, since these areas are usually not accessed by people, detecting abnormalities is very challenging. Our products using optical fibers can maintain the entire facility by monitoring both temperature and displacement. For example, it is possible to continuously monitor the status of lithium batteries 24/7 using temperature information obtained from the optical fibers, while also monitoring the condition of the panels simultaneously. Monitoring over several tens of kilometers per channel is possible, and with the ability to pinpoint location information within a few meters, it aids in identifying abnormal areas and offers excellent cost performance. Furthermore, by conducting displacement measurements using DAS, it is possible to quickly identify when people intrude into the vicinity or when abnormal loads occur on cables, allowing for immediate alerts and enabling quicker actions to protect customer assets.

• Solar power generation

In recent years, as the power generation business using renewable energy has become more active, the introduction of offshore wind power generation facilities is also progressing rapidly. Power generation equipment is designed to operate for an average of 20 to 30 years, making annual and constant maintenance extremely important. Among these, the power cables buried on the seabed have limited methods for continuous monitoring, and sometimes these methods are not fully effective. The optical fiber-based information system that our company handles can establish a continuous monitoring system without the need to attach additional sensors to the cables, even for existing equipment, by utilizing communication fibers attached to the target cables. Based on the information obtained from the optical fibers, we provide management of cable burial depth, temperature information, stress load information, and load information on the wires, contributing to the health and longevity of the cables. Additionally, since distance information can also be obtained from the optical fibers, it is possible to detect abnormal locations with high accuracy in the event of an anomaly. This can also reduce the time required to confirm abnormal locations using conventional ROVs.

• Wind power generation
• Other measuring instruments
• Analysis and prediction system

In recent years, various fuels have been used as energy for production. These can be single fuels or mixed fuels. In such cases, when a new fuel is used, there is a tendency to overlook warning signs regarding phenomena that were previously thought to be problem-free based on past experiences. Additionally, there may be unforeseen events, such as the internal wall thinning occurring at a faster rate than expected. Our products utilize optical fibers to monitor the temperature of the entire equipment, allowing for detailed detection of hotspots on the equipment surface caused by internal wall thinning, thereby contributing to the safe and secure operation of the equipment. Since the sensors use optical fibers, there is no need for explosion-proof measures based on environmental conditions, as is the case with traditional thermocouples. Furthermore, because they can capture the entire equipment area, they enable more detailed monitoring compared to spot monitoring. By using a dedicated GUI, the equipment can be displayed in greater detail, making it easy to see where and what kind of behavior is occurring, which can also serve as a guideline for repairs during scheduled maintenance.

• Monitoring and Control Equipment
• Other measuring instruments

In recent years, as the demand for renewable energy has increased, many biomass power plants have been constructed domestically. The larger the power generation capacity, the more fuel is required, and many power plants are now using long-distance conveyors for transporting fuel from transport ships to silos and from fuel storage facilities. However, urban biomass power plants often operate with a small number of staff, and the burden of checking the condition of transportation equipment increases the wider the area covered. Our fiber optic monitoring system obtains temperature information from a single thin fiber optic cable installed throughout the transportation equipment, allowing for 24-hour constant monitoring in the control room. Our products are designed to detect signs of abnormalities before they occur. By detecting temperature anomalies before fires or smoke, they help in addressing issues without having to stop the equipment. Additionally, since fiber optics are intrinsically safe, no special explosion-proof measures are required even in environments where dust may be present. Expanding the monitoring area is also easy, and many companies plan to implement expansions periodically.

• Measurement and Analysis Equipment
• Thermal power generation
• Other biomass

Our company's distributed acoustic vibration sensing system (DAS/DVS) captures vibrations received by installed optical fibers as acoustic energy. Essentially, it utilizes existing optical fiber networks (such as transportation and communication networks) to acquire data in real-time, functioning as a distributed acoustic sensor. In recent years, it has been used to detect minute vibrations caused by seismic waves, leaks or water leaks in factory piping, and various other abnormal sounds, as well as to pinpoint their locations. Our measurement device is less susceptible to the effects of fading signals typically observed in systems using the C-OTDR principle, thanks to our unique 2P squared technology. In the ultra-low frequency range, the phase difference method C-OTDR system can sensitively measure transient temperatures caused by the expansion and contraction of fibers due to temperature changes. This method is known as distributed temperature gradient sensing (DTGS) and is well-known in the oil and gas industry. We are conducting research to measure and utilize a wide variety of phenomena using this product in collaboration with various research institutes, universities, and companies in Japan. For more details, please contact us directly or through this website.

• Vibration and Sound Level Meter
• Geological Survey
• Measurement and analysis equipment leasing and rental

In recent years, there have been many tragic incidents where important cultural properties designated by the government have been lost due to fires and other disasters. Among the buildings that have been lost, there are techniques that cannot be reproduced with current technology, and once they are lost, there are important elements that can never be regained. However, it is extremely difficult for people to remain vigilant for signs of fire 24 hours a day, and even a small oversight can lead to serious accidents. A wide-area temperature system using optical fibers can monitor the entire area where cables are laid, capturing conditions in places that are often difficult for the human eye or cameras to reach. Our system can detect abnormal temperatures before the thermal decomposition of materials that can ignite, allowing for quicker detection of anomalies and helping to protect the user's valuable assets. The cables we propose can be customized in color to match various buildings and objects, allowing for consideration of the landscape without disruption. If you have any interest after reading this page, we would be happy to provide further explanations, so please do not hesitate to contact us. Thank you very much for your consideration.

• Monitoring and Control Equipment

Traditionally, measuring geothermal heat involved using thermocouples or platinum resistance thermometers connected for each required measurement point, and if the depth was significant, it was common to lower them using cranes or similar equipment. Additionally, the more measurement points there were, the thicker the cable diameter became, which often led to high costs for drilling the corresponding borehole diameter. However, with this product, it is possible to start measurements immediately using a portable measuring device, a laptop, and dedicated optical fiber sensors. This product is sized to be loaded onto a typical passenger vehicle, and there is no need for heavy machinery to lay cables. It can also be inserted into existing piping for heat extraction and thermal response recovery tests to measure temperature. In recent years, it has been widely used by research institutions, including universities, as well as companies that undertake thermal response testing. The laptop does not require complicated settings and operates on Windows OS. Additionally, we offer optional software for gradient display at each depth and analysis programs, so please feel free to inquire. We also provide measurement services using this equipment, so do not hesitate to ask. There are also other products available that can handle depths of up to 3000 meters.

• Foundation construction
• Ground foundation construction method
• Analysis and prediction system

In recent years, improvements in the quality of optical fibers and the production of various types of fibers have made it possible to develop sensors that were unimaginable a while ago. By deploying sensors in the 2 mm gap of devices that generate ultra-strong electromagnetic fields, we have designed, developed, and released various sensors tailored to different scenarios, such as sensors that monitor the state of the device and sensors that detect temperature at intervals of a few centimeters in depth. We also contribute to reducing construction and sensor costs by proposing optical fiber-type sensors for cases that cannot be addressed by conventional thermocouples or where costs become exorbitant due to excessive points. Additionally, we have developed sensor cables that, despite being thin (5Φ or less), can withstand high pressure and are easy to handle, receiving positive feedback from contractors. Of course, we also offer options for high-temperature and ultra-low-temperature applications, so if you have any ideas about potential uses, please let us know, and we will provide suggestions as much as possible.

• Boring Company
• Site and ground investigation
• Wells and hot springs

I believe many companies have traditionally used thermocouples and heat-sensitive wires for fire prediction measures, but with the recent trend of larger and more widespread factory equipment, the costs for wiring, installation work, and maintenance after operation have often increased. Our system allows for extensive temperature measurement and monitoring by deploying a single optical fiber sensor with a diameter of a few millimeters as the measurement target. Conventional measuring devices often require electricity for measurement, which can necessitate explosion-proof measures in some cases, but by using optical fibers, it is possible to implement a fundamentally safe solution. Recently, with the liberalization of electricity, there has been significant attention on the use of our technology for abnormal monitoring of fuel transport equipment associated with the construction of power plants. In addition to the commonly envisioned linear fibers, we also utilize specialized sensors through custom processing for temperature measurement in confined spaces or short spans, catering to various applications. Of course, it is also possible to build monitoring systems that repurpose existing fibers. Our technology is utilized for monitoring areas such as joint trenches and underground facilities, where people typically do not enter, contributing to the safety of on-site workers. For more details, please feel free to contact us.

• Ground foundation construction method
• Other measuring instruments
• Analysis and prediction system