A new displacement current measuring system coupled with the Langmuir‐film technique

1991 ◽  
Vol 62 (9) ◽  
pp. 2228-2233 ◽  
Author(s):  
Yutaka Majima ◽  
Mitsumasa Iwamoto
Keyword(s):  
Measuring System ◽  
Displacement Current ◽  
Langmuir Film ◽  
Current Measuring

Laser-Based Measurement of Over Dimensional Freight Rail Shipments

2012 ◽  
Author(s):  
Bryan W. Schlake ◽  
Brian S. Daniel ◽  
Ron Voorheis
Keyword(s):  
Measurement System ◽  
Human Error ◽  
Cost Effective ◽  
Measuring System ◽  
Prototype System ◽  
Reference Target ◽  
Potential Benefits ◽  
Multiple Measurements ◽  
Current Measuring ◽  
Time Required

In pursuit of improved safety, Norfolk Southern Corp. (NS) has partnered with Amberg Technologies to explore the potential benefits of a laser-based measurement system for measuring over dimensional freight rail shipments. Shipments that do not fall within a standard geometric envelope, denoted as Plate B in the Association of American Railroads (AAR) Open Top Loading Rules [1], are considered to be over dimensional, or High-Wide Loads (HWLs). Extending beyond the limits of the Plate B diagram, these loads are not permitted in unrestricted interchange service. Instead, they must be measured both at points of origin and at interchange points. For US Class I Railroads, the de facto method for measuring HWLs requires mechanical personnel to either climb on the equipment or use a ladder and physically measure the overall height and width of the load. Using a tape measure, plumb line, and 6-foot level, car inspectors, or carmen, must often make multiple measurements to determine the height or width of a critical point on the load. The summation of these measurements can be subject to mathematical human error. In addition to the inherent limitations with regards to accuracy and efficiency, this method of measurement presents considerable safety challenges. The objective of the project was to develop a portable, cost-effective and accurate measurement system to improve the day-to-day operational process of measuring HWLs and reduce human exposure to railyard hazards. Norfolk Southern worked closely with Amberg Technologies to provide a clear overview of the current measuring methods, requirements, challenges and risks associated with HWLs. Amberg then developed a prototype system (with patent pending) and successful tests have been completed at both a point of origin for NS shipments and at a location where HWLs are received at interchange. The measuring system consists of a tripod mounted laser, a specially designed track reference target (TRT) and software designed specifically for HWL measurements. The system allows car inspectors to take measurements from a safe, strategic location away from the car. As a result, this system eliminates the need to climb on the equipment or a ladder and greatly reduces the amount of time spent on and around live tracks. In addition, initial tests indicate that this technology reduces the labor time required to measure HWLs by as much as one half while improving measurement accuracy. These tests have demonstrated that a laser-based system has the potential to greatly improve the safety, efficiency and accuracy associated with measuring HWLs.

Investigation of photoinduced molecular switching in a single monolayer by a displacement‐current‐measuring technique

1991 ◽  
Vol 95 (11) ◽  
pp. 8561-8567 ◽  
Author(s):  
Mitsumasa Iwamoto ◽  
Yutaka Majima ◽  
Haruhiko Naruse ◽  
Tetsuya Noguchi ◽  
Hiromasa Fuwa
Keyword(s):  
Measuring Technique ◽  
Displacement Current ◽  
Molecular Switching ◽  
Current Measuring

Detection of photoregulation in a monolayer system mixed with liquid crystal and azobenzene polymer using a displacement-current measuring technique

1994 ◽  
Vol 244 (1-2) ◽  
pp. 1018-1021 ◽  
Author(s):  
Haruhiko Naruse ◽  
Hisashi Yoshida ◽  
Koji Ohnishi ◽  
Mitsumasa Iwamoto ◽  
Kunihiro Ichimura
Keyword(s):  
Liquid Crystal ◽  
Measuring Technique ◽  
Displacement Current ◽  
Azobenzene Polymer ◽  
Current Measuring

Traceability Method of 100kA Impulse Current Measuring System

2021 ◽  
Author(s):  
Zhaozhi Long ◽  
Wenting Li ◽  
Jiawei Fan ◽  
Kangmin Hu ◽  
Feng Zhou ◽  
...  
Keyword(s):  
Measuring System ◽  
Current Measuring ◽  
Impulse Current

Electronics for SPring-8 X-ray beam monitors

1998 ◽  
Vol 5 (3) ◽  
pp. 630-631 ◽  
Author(s):  
Togo Kudo ◽  
Hideki Aoyagi ◽  
Hideaki Shiwaku ◽  
Yoshiharu Sakurai ◽  
Hideo Kitamura
Keyword(s):  
Processing System ◽  
Measuring System ◽  
Signal Processing System ◽  
Beam Position ◽  
X Ray ◽  
Current Voltage ◽  
Highly Sensitive ◽  
Position Data ◽  
Current Measuring ◽  
A Current

A sensitive current-measuring system is required to construct a highly sensitive X-ray beam-position monitor (XBPM). A current–voltage converter (I/V) which can measure currents between 0.1 nA and 10 mA was designed, and the signal processing system of the XBPM was constucted using this I/V. This system was used in beamline commissioning. Beam-position data standard deviations of σ ≃ 3 µm for the bending-magnet beamline, and σ x ≃ 3 µm and σ y ≃ 1 µm for the insertion-device beamline were obtained during the beamline commissioning.

Optical Voltage and Current Measuring System for Electric Power Systems

1986 ◽  
Vol 1 (1) ◽  
pp. 91-97 ◽  
Author(s):  
M. Kanoe ◽  
G. Takahashi ◽  
T. Sato ◽  
M. Higaki ◽  
E. Mori ◽  
...  
Keyword(s):  
Power Systems ◽  
Electric Power ◽  
Electric Power Systems ◽  
Measuring System ◽  
Current Measuring
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