High speed data acquisition

R. H. Krech and G. E. Caledonia. Configuring systems for high-speed data acquisition and analysis. J. of Engin. Computing Appl., 1 25, 1987. 

P.K. Van Staagen, T.G. Miller, B.C. Gibson and R.A. Krauss, High speed data acquisition for contraband identification using neutron transmission, AIP Conf. Proc., 392(pt. 2) (1997) 853-856. 

The temperature rise on the back face is on the order of 5-10°C. The remarkable feature of this technique is that the incident energy on the front face on the specimen need not be known. High speed data acquisition, however, is needed since... 

The large amount of data which has to be collected in time resolved measurements, especially if full two-dimensional patterns are recorded, leads to the development of dedicated high speed data acquisition systems. This is the third component which is necessary together with the source and detectors, to bring synchrotron radiation X-ray experiments to their full deployment. 

All output signals from temperature sensors and flow controllers are sampled with a commercial acquisition system connected to a PC and data are presented on the screen using a LabView set-up. For the measurements of the cylinder pressure a high speed data acquisition system is installed which also is connected to the PC. 

Additionally, by having an experimental setup with a high-speed data acquisition system, it is possible to control deposition pulses with durations below milliseconds. This ultrafast pulsing method was called precision electrodeposition and allowed the deposition of sub-monolayer quantities of material. Precision electrodeposition was demonstrated for the CuNi system, as shown in Fig. 14, where a sequence of ultrafast current pulses for the electrodeposition of a nanostructured CuNi alloy with a controlled composition of 48%i Cu and 52%i Ni is displayed. The duration of the pulses (tens of milliseconds), allows the deposition... 

Active query methods measure cell impedance, which is then correlated to SoC. The technique often superimposes an active signal (a low amplitude, characteristic high-frequency square or sinusoidal current pulse) onto the battery and then uses a transfer function on the response waveform to determine the ohmic polarization or a direct correlation to SoC. One permutation of this technique uses the voltage response to indigenous current spikes to map impedance in a similar way. This method provides reasonable results, but if hardware is involved it is often complex and expensive even sensors will require a relatively high-speed data acquisition bus to minimize the slew between voltage and current. 

Li, Manchang. 2010. The design of high-speed data acquisition system based on Ethernet [J]. Engineering and test. im 2) 50-52. 

High Speed Data Acquisition with Realtime Display and Direct Throughput to Disk... 

Hie second break through was that of proving that high speed data acquisition systems (Scaimers) could be procured for process monitoring with sufficient Inherent reliability and functions to fulfill process safety monitoring requirements. 

A prototype device of the conductivity and velocity (C-V) technique has been developed. The device mainly consists of three units, including a sample cell, a measurement unit, and a personal computer. The sample cell is made of stainless steel for aqueous samples under examination. The measurement unit is equipped with a conductivity meter with a 4-pole conductivity probe, an ultrasonic pulser/receiver with two ultrasonic transducers that are mounted on the two opposite sides of the sample cell. The measured electrical conductivity and temperature (by the conductivity meter) and the acoustic velocity (by the pulser/receiver) are acquired and sent to the computer by a high-speed data acquisition card. Specific software is developed and installed in the computer. The software is capable of determining salt and inhibitor concentrations using the measured conductivity, velocity, and temperature. By integration with a thermodynamic model HWHYD, the software can also determine the hydrate phase boundary, hence the hydrate safety margin given the hydrocarbon composition and the pipeline conditions. 

Data Acquisition High-speed data acquisition from any sensor on any bus is possible. 

This paper analyzes the barrel pressures and motor current data acquired using a high-speed data acquisition system. Graphical analysis shows the relationship between screw design and screw speed. 

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