Helm Tracker™Cathode Current Sensing Technology

Ni-Co 2013 ◽  
2013 ◽  
pp. 201-209
Author(s):  
Rob Fraser ◽  
Tim Johnston ◽  
John Yesberg ◽  
Sebastien Nolet ◽  
Chris Boon
Keyword(s):  
Current Sensing ◽  
Sensing Technology ◽  
Cathode Current

Helm Tracker™ Cathode Current Sensing Technology

Ni-Co 2013 ◽  
2013 ◽  
pp. 201-209 ◽  
Author(s):  
Rob Fraser ◽  
Tim Johnston ◽  
John Yesberg ◽  
Sebastien Nolet ◽  
Chris Boon
Keyword(s):  
Current Sensing ◽  
Sensing Technology ◽  
Cathode Current

Integrated Current Sensing Technology for Synchronous Buck Converters

2013 ◽  
Vol 2013 (1) ◽  
pp. 000776-000781
Author(s):  
Evan Reutzel ◽  
Rengang Chen ◽  
Scott Ragona ◽  
David Jauregui
Keyword(s):  
Steady State ◽  
Buck Converter ◽  
Buck Converters ◽  
Lead Frame ◽  
Current Sensing ◽  
Operating Modes ◽  
Common Lead ◽  
Sensing Technology ◽  
Steady State Operation ◽  
Better Than

A lossless current sensing technique is proposed, which takes advantage of the on-resistance of the sync FET used in the buck converter to sense the current flowing through the device and to reconstruct an emulated version of the inductor current. The current sensing circuit is integrated into the MOSFET driver and co-packaged with a set of FETs in a stacked die arrangement with common lead-frame shared between driver and sync FET to enable accuracy equivalent to or better than DCR sensing. In addition to steady-state operation, modern multiphase controllers are required to drive the buck converter in other operating modes including: Diode Emulation Mode (DEM), body-braking, tri-state (phase off). These additional modes are also correctly emulated by the current sense logic.

scholarly journals Study on the Application of Optical Current Sensor for Lightning Current Measurement of Transmission Line

Sensors ◽  
2019 ◽  
Vol 19 (23) ◽  
pp. 5110
Author(s):  
Jin-ming Ge ◽  
Yan Shen ◽  
Wen-bin Yu ◽  
Yue Han ◽  
Fang-wei Duan
Keyword(s):  
Transmission Lines ◽  
Material Selection ◽  
Current Data ◽  
Measurement Sensitivity ◽  
Transmission Systems ◽  
Current Sensing ◽  
Measurement Capability ◽  
Lightning Current ◽  
Sensing Technology ◽  
Sensing Material

Accurate and reliable lightning current data are the basis of lightning protection design. To measure lightning current data at different measurement locations in a transmission system, the limitations of traditional lightning current sensors are analyzed, and optical current sensing technology is adopted, which has the advantages of no magnetic saturation and no bandwidth limitation. Compared with traditional application environments, the sensing technology is used in special environments in transmission systems. This paper analyzes the influence of environmental factors on sensors, and combines the extreme environmental requirements, such as temperature and insulation requirements, to study the sensor. Starting from the sensitivity, the sensing characteristics of the sensor are analyzed. The sensor is designed according to three aspects: sensing material selection, spatial measuring position, and sensing material size optimization, such that it can satisfy the different measurement requirements of towers, overhead ground wires, and transmission lines, respectively. The experiments indicate that the developed sensors can meet the measurement sensitivity requirements of different types of lightning strikes. The experimental results of sensors exhibit a reasonable amplitude measurement accuracy, linearity, and waveform measurement capability. These results provide important theoretical and experimental bases for the application of optical current sensing technology to the measurement of the lightning current of transmission systems.

mHealth

2016 ◽  
pp. 115-125
Author(s):  
Assim Sagahyroon
Keyword(s):  
Sleep Apnea ◽  
Mobile Devices ◽  
Mobile Health ◽  
Health Sector ◽  
Physiological Signals ◽  
Current Sensing ◽  
Computing Power ◽  
Monitoring And Diagnosis ◽  
Sensing Technology ◽  
Mhealth Technology

The increasing computing power of mobile electronic devices coupled with advances in sensing and wireless technology have paved the way for mobile health (mHealth) to play a major and innovative role in the health sector. This chapter discusses the use of mHealth in the monitoring and diagnosis of sleep-related diseases with a particular emphasis on sleep apnea since it is considered to be one of the most prevalent disorders. Apnea symptoms and the physiological signals associated with it are described with an overview of the current sensing technology used to capture and record these signals. The chapter continues to discuss the integration of sensors with todays' mobile devices to offer mhealth platforms that allow for the monitoring, diagnosis and management of sleep apnea. We conclude by discussing the current limitations of the mHealth technology and discuss possible future enhancements.

scholarly journals Novel Fault Location in MTDC Grids With Non-Homogeneous Transmission Lines Utilizing Distributed Current Sensing Technology

2018 ◽  
Vol 9 (5) ◽  
pp. 5432-5443 ◽  
Author(s):  
Dimitrios Tzelepis ◽  
Grzegorz Fusiek ◽  
Adam Dysko ◽  
Pawel Niewczas ◽  
Campbell Booth ◽  
...  
Keyword(s):  
Transmission Lines ◽  
Fault Location ◽  
Current Sensing ◽  
Sensing Technology

scholarly journals Distributed current sensing technology for protection and fault location applications in high-voltage direct current networks

2018 ◽  
Vol 2018 (15) ◽  
pp. 1169-1175 ◽  
Author(s):  
Dimitrios Tzelepis ◽  
Adam Dysko ◽  
Campbell Booth ◽  
Grzegorz Fusiek ◽  
Pawel Niewczas ◽  
...  
Keyword(s):  
High Voltage ◽  
Direct Current ◽  
Fault Location ◽  
Current Sensing ◽  
High Voltage Direct Current ◽  
Sensing Technology

Research on Current Sensing Technology Using Fiber Bragg Grating Demodulated by Fiber Michelson Interferometer

2015 ◽  
Vol 52 (8) ◽  
pp. 080602
Author(s):  
樊彦恩 Fan Yanen ◽  
武帅 Wu Shuai ◽  
贺胜男 He Shengnan ◽  
李丹丹 Li Dandan ◽  
王凯 Wang Kai ◽  
...  
Keyword(s):  
Fiber Bragg Grating ◽  
Michelson Interferometer ◽  
Bragg Grating ◽  
Current Sensing ◽  
Sensing Technology

Development of Optical Communication Marks for Mobile Robots to Recognize Their Environment and to Handle Objects

2005 ◽  
Vol 17 (2) ◽  
pp. 208-217 ◽  
Author(s):  
Keiji Nagatani ◽  
◽  
Hiroyasu Sato ◽  
Hidenori Tasaka ◽  
Akio Gofuku ◽  
...  
Keyword(s):  
Mobile Robot ◽  
Optical Communication ◽  
Target Object ◽  
Mobile Manipulator ◽  
Human Beings ◽  
Current Sensing ◽  
Irregular Shapes ◽  
Sensing Technology ◽  
Vision Sensors ◽  
Performance Results

In an environment in which robots and human beings coexist, it is difficult for a mobile manipulator to grasp an object autonomously. Generally, the most difficult aspect of realizing such action is object recognition. Such an environment includes many of irregular shapes and sizes (because of unknown distance from sensors to each object) and blocking of vision sensors. Object’s abstraction and recognition thus remains far from practical use of current sensing technology. To solve the recognition problem, we developed marks recognized through optical communication rather than attempting to improve sensing technology. Marks using light-emitting diodes (LEDs) have the advantages of (1) being visible as far as they remain in sight, (2) having the properties of the target correctly using digital signals, and (3) localizing the mark position using stereovision. Once the marks are attached to several movable objects, a robot can find a location of a target object easily by communicating with the mark attached to the target object. Also, if the marks are located at known positions such as walls, a mobile robot can localize itself by detecting such marks. In this research, we developed an Intelligent Mark System (IMS) between a robot and marks which uses visible and infrared LEDs for communication. Using this system, we performed (1) object grasping tasks (the target is a small can with IMS) using a mobile manipulator, (2) localizing a mobile robot using IMS on several walls and (3) recognizing large objects (desks). In this paper, we explain an overview of communication between marks and robots, and we discuss task performance results for an autonomous mobile manipulator using IMS in a real environment. Also, we report the feasibility and limitations of our proposal.

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