Coal Mine Laser Battery

Research progress on coal mine laser methane sensor

This paper discusses the research progress of low-power technology of laser methane sensors for coal mine. On the basis of environment of coal mines, such as ultra-long-distance transmission and high stability, a series of studies have been carried out.

Applied Terrestrial Laser Scanning for coal mine High Definition …

The results from two case studies at Coc Sau open-cast and Khe Cham underground coal mines (Viet-nam) show the coordinate accuracy of 0.6 to 6.7 mm in the range of 4 to 75 m at Coc Sau open-pit ...

Research on Identification of Coal Mine Water Source Based on Laser …

Research on Identification of Coal Mine Water Source Based on Laser Induced Fluorescence Technology YAN Peng-cheng 1, 2, SHANG Song-hang 2, ZHOU Meng-ran 2, HU Feng 2, LIU Yu 1 1. State Key Laboratory of Mining Response and Disaster 2.

Could Coal Waste Be Used to Make Sustainable Batteries?

Eliza Griswold writes about Appalachia''s acid mine drainage—rich with critical minerals and rare-earth elements, which can be used to power green technologies and provide clean ...

Tech zero: Mark Swinnerton''s Green Gravity set to turn 108-year-old coal mine into a battery …

This 108-year-old coal mine is being reborn as a battery Peter Ker Resources reporter Updated Nov 14, 2022 – 1.55pm, first published at 9.46am Save Log in or Subscribe to save article ...

Problems and Research on Underground Charging Safety of Power Battery for Coal Mine …

In recent years, the intelligent inspection robot for mine construction, which combines coal mine safety monitoring and robot technology, has been widely used in the field of underground safety ...

CDC

to develop guidelines to improve battery safety for underground coal mine communications and tracking system equipment, focusing on battery selection, integration, use, and maintenance. See Also Analysis of Mine Fires for All U.S. Underground and Surface Coal Mining Categories: 1990-1999

Efficient Laser-Based 3D SLAM for Coal Mine Rescue Robots

An accurate description of laneway space with self-localization is a key issue when coal mine rescue robots (CMRRs) perform post-disaster exploration and rescue missions. The 3D simultaneous localization and mapping (SLAM) is an effective but time-critical and highly challenging task in complex laneway scenarios, especially after disasters. In this paper, …

Efficient Laser-Based 3D SLAM for Coal Mine Rescue Robots

Abstract: An accurate description of laneway space with self-localization is a key issue when coal mine rescue robots (CMRRs) perform post-disaster exploration and rescue missions. The 3D simultaneous localization and mapping (SLAM) is an effective but time-critical and …

Laser methane sensor and its field application in coal mine safety …

Based on the principle of laser absorption spectroscopy, a laser methane sensor for mine use has been developed. The design of the sensor system is discussed and its practical application for ...

MineTag: Exploring Low-Cost Battery-Free Localization Optical Tag for Mine …

In this section, we outline the basic design of MineTag. The overall system consists of localization base station composed of optical tags, an LED transmitter and a light sensor. As shown in Fig. 1, we designed a battery-free optical tag, which consists of two parts, an absorption layer and a reflective layer, used to modulate the light intensity and …

A Huge Battery Has Replaced Hawaii''s Last Coal Plant

Mining Laser Systems

FOTON Optoelectronics mining laser products are best described as efficiency improving and cost reducing products; they are commonly used during various stages in surveying, engineering and mining production. Most of listed mining laser products are available in Green and Red wavelengths and in various beam shapes, including dot, line, cross, …

On-Line Coal Monitoring with Laser Induced Breakdown Spectroscopy …

With coal remaining a primary source of fuel, coal mines and coal-fired power plants continue to require efficient processing tools to maintain quality output. From the early stages of mining coal ore to the final combustion stages at the power plant, on-line quality controls must be put in place to ensure the stability of production.

MineGPS: Battery-Free Localization Base Station for Coal Mine …

Rescue robot self-positioning is a significant challenging technology in coal mine rescue. Towards this end, we propose a localization system with unique low-cost battery-free base stations for underground rescue robots, called MineGPS.

Fiber Laser Methane Sensor and its Application in Coal Mine Safety

Using the technology of tuneable diode laser absorption spectroscopy and the technology of micro-electronics, a fiber laser methane sensor based on C8051F410 is given. We use the DFB Laser as the light source of the sensor.

Laser methane sensor and its field application in coal mine safety

Laser methane sensor and its field application in coal mine safety Yubin Wei 1,2, Lin Chang 2, Bao Liu 5, Jie Hu 3, Yin Wang 1, Yanfang Li 1, Zhaowei Wang 1, Hui Meng 3, Tongyu Liu 1,3, Tong Sun 4 and Kenneth T V Grattan 4

Komatsu Develops New Battery Technology for Underground Coal

Lithium-ion batteries offer advantages over lead-acid batteries Komatsu has been testing lithium-ion (Li-ion) batteries for use on its battery-powered hauler product line for several years. These machines were launched in the 1990s with lead acid batteries, and they have performed well with improvements over the years. Li-ion technology will be …

Efficient Laser-Based 3D SLAM in Real Time for Coal Mine …

The accurate description of laneway space with self-localization is a key issue when coal mine rescue robots (CMRRs) perform post-disaster exploration and rescue missions. 3D Simultaneous Localization and Mapping (SLAM) is an effective but time-critical with highly challenging task in semi-structured laneway environment. In this paper, we propose a …

$1.3 billion investment to turn Eastern Kentucky coal mine into hydropower ''battery''

FRANKFORT — An Eastern Kentucky coal mining site set to become a giant hydropower battery is getting a significant boost from the federal government. Florida-based Rye Development is in line for an $81 million grant from the U.S. Department of Energy for its Lewis Ridge Pumped Storage Project. ...

Coal mine low power laser methane detection and alarm instrument

A mobile methane alarm Internet of things(IOT) system for coal mine based on portable instrument has been developed, which realizes real-time upload of data and cloud analysis, makes the traditional mine gas monitoring and control system …

Laser methane sensor and its field application in coal mine safety …

Recent progress in the development of an atmospheric carbon monoxide (CO) monitoring system using a ~2.33 μm laser absorption sensor is reported. The principles of detection technology and the ...