Low cost high-speed test data acquisition: Accurate period estimation driven signal reconstruction using incoherent subsampling

2012 ◽  
Author(s):  
Thomas Moon ◽  
Hyun Woo Choi ◽  
Abhijit Chatterjee
Keyword(s):  
Data Acquisition ◽  
Test Data ◽  
High Speed ◽  
Low Cost ◽  
Signal Reconstruction ◽  
Speed Test ◽  
Period Estimation

scholarly journals The Acquisition Rate and Soundness of a Low-Cost Data Acquisition System (LC-DAQ) for High Frequency Applications

Sensors ◽  
2020 ◽  
Vol 20 (2) ◽  
pp. 524 ◽  
Author(s):  
Ciro Moreno ◽  
Alejandro González ◽  
José Luis Olazagoitia ◽  
Jordi Vinolas
Keyword(s):  
Data Acquisition ◽  
High Frequency ◽  
High Speed ◽  
Low Cost ◽  
Data Retrieval ◽  
Cost Data ◽  
High Rate ◽  
Acquisition Rate ◽  
Open Platform ◽  
Speed Up

This article presents a novel and reliable low-cost data acquisition solution for high frequency and real-time applications in vehicular dynamics. Data acquisition systems for highly dynamic systems based on low-cost platforms face different challenges such as a constrained data retrieval rate. Basic data reading functions in these platforms are inefficient and, when used, they limit electronics acquisition rate capabilities. This paper explains a new low-cost, modular and open platform to read different types of sensors at high speed rates. Conventional reading functions are avoided to speed up acquisition rate, but this negatively affects data reliability of the system. To solve this and exploit higher data managing rates, a number of custom secure layers are implemented to secure a reliable acquisition. This paper describes the new low-cost electronics developed for high rate acquisition applications and inspects its performance and robustness against the introduction of an increasing number of sensors connected to the board. In most cases, acquisition rates of the system are duplicated using this new solution.

Test Level 2 Guardrail-to-Bridge Rail Transition Compatible with 31-in. Guardrail

2013 ◽  
Vol 2377 (1) ◽  
pp. 74-83
Author(s):  
R. P. Bligh ◽  
D. R. Arrington ◽  
R. Meza
Keyword(s):  
High Speed ◽  
Low Cost ◽  
Transition Systems ◽  
Speed Test ◽  
Traffic Conditions ◽  
Level 3 ◽  
Common Application ◽  
Departments Of Transportation ◽  
Test Level ◽  
Level 2

Many state departments of transportation are in the process of updating their guardrail standards to comply with the AASHTO Manual for Assessing Safety Hardware (MASH) and guidance issued by FHWA on guardrail height. A key feature of the new systems is an increase in rail mounting height from 27 in. to 31 in. A common application of guardrails is shielding motorists from hazards at bridge approaches, including the end of the bridge rail. When a flexible-approach guardrail is attached to a rigid bridge rail, a transition section is needed to transition the stiffness properly from one system to another. A nested thrie beam transition system has been successfully tested to MASH guidelines and is compatible with a 31-in.-approach guardrail. However, it is cost-prohibitive to use this high-speed, Test Level 3 transition on all roadways. A low-cost transition was successfully evaluated under NCHRP Report 350 Test Level 2 (TL-2) impact conditions for use on lower-speed roadways. However, this TL-2 W-beam transition is 27 in. tall and is not compatible with the new 31-in. guardrail systems. This paper describes a new low-cost guardrail-to-bridge rail transition that was successfully developed and tested under MASH TL-2 conditions. The transition is compatible with new 31-in. guardrails and can connect to rigid concrete bridge rails. The transition is considered suitable for implementation on roadways that have traffic conditions appropriate for the use of TL-2 safety hardware. Use of this system would provide significant savings in both material and installation costs compared with high-speed transition systems.

PC104 Interface Recommended for High Speed Data Acquisition Systems

2013 ◽  
Vol 332 ◽  
pp. 119-123
Author(s):  
Dorina Purcaru ◽  
Anca Purcaru
Keyword(s):  
Data Acquisition ◽  
High Speed ◽  
Low Cost ◽  
Sampling Rate ◽  
Signal Acquisition ◽  
Synchronized Sampling ◽  
Data Acquisition Systems ◽  
High Speed Data Acquisition ◽  
High Speed Data ◽  
Energetic Systems

The interface presented in this paper performs a synchronized sampling of all eight common-mode or differential analog inputs with a high sampling rate. This is a low cost interface, entirely controlled by the PC104 CPU. The paper is focused on design and operation aspects of the synchronized analog-to-digital conversion module. This interface is recommended for high speed data acquisition systems and finds its utility in energetic systems, for monitoring the power quality and for recording different specific transient events. Some programmable electronic modules which perform analog and digital signal acquisition in energetic systems already contain a PC104 interface with synchronized sampling of analog inputs; some experimental results are also presented in this paper.

PC104 Interface Recommended for High Speed Data Acquisition Systems

2013 ◽  
Vol 325-326 ◽  
pp. 926-929 ◽  
Author(s):  
Dorina Purcaru ◽  
Cornelia Gordan ◽  
Romulus Reiz ◽  
Anca Purcaru
Keyword(s):  
Data Acquisition ◽  
High Speed ◽  
Low Cost ◽  
Sampling Rate ◽  
Digital Signal ◽  
Signal Acquisition ◽  
Synchronized Sampling ◽  
Data Acquisition Systems ◽  
High Speed Data Acquisition ◽  
High Speed Data

The interface presented in this paper is recommended for high speed data acquisition systems; it performs a synchronized sampling of all common-mode or differential analog inputs with a high sampling rate. This is a low cost interface, entirely controlled by the PC104 CPU. Programmable electronic modules that contain such PC104 interfaces can be found running in the energetic system from Romania; these dedicated equipments perform the analog and digital signal acquisition for monitoring and recording different specific transient events. Some experimental results obtained using the disturbance monitoring device PC-08/104 are also presented in this paper.

An Optical Tomography System Based on the Universal Serial Bus

2012 ◽  
Author(s):  
Ruzairi Abdul Rahim ◽  
Zhen Cong Tee ◽  
Kok San Chan
Keyword(s):  
Data Acquisition ◽  
High Speed ◽  
Low Cost ◽  
Optical Tomography ◽  
Data Acquisition System ◽  
Acquisition System ◽  
Universal Serial Bus ◽  
Tomography System ◽  
High Speed Data Acquisition ◽  
System Data

In the past, most of the researches in tomography system concentrated more on the design of the sensor, and made use of the data acquisition system as the interface to the personal computer. This will increase the cost of the system. In this project, Universal Serial Bus was successfully implemented in an optical tomography system, providing a low cost, high–speed data acquisition system. The system, however, is an offline system. The system had successfully processed all the data in the lower level, using the micro controller before sending the data into the PC through the USB. Key words: Universal Serial Bus, optical tomography system, data acquisition system, tomogram

Drop Test for Electroless Nickel Electroless Palladium Immersion Gold (ENEPIG) Surface Treatment Application That is Suitable to a Low-Cost, Fine Pitch and Easy Fabrication

2009 ◽  
Author(s):  
Junehyeon Ahn ◽  
Hongkwon Kim ◽  
Kangho Byun ◽  
Youngmin Lee ◽  
Donghoon Jang ◽  
...  
Keyword(s):  
Data Acquisition ◽  
Test Performance ◽  
High Speed ◽  
Low Cost ◽  
Electroless Nickel ◽  
Drop Test ◽  
In Situ Data ◽  
Fine Pitch ◽  
Device Reliability

For an application of fine pitch Ball Grid Array (BGA) or Land Grid Array (LGA) packages, ENEPIG is a promising surface finish technology of low cost, fine pitch and easy fabrication. In this paper, we study the drop test, one of the most important items of hand held device reliability test, of ENEPIG surface finished packages. This paper focuses on the drop test performance of a bond between the main board and three kinds of packages. Those packages are designed with a daisy chain for a detection of open/short during the drop test. The main board has a bar type outline and is suitable for an In-Situ data acquisition. Drop tester is composed of a drop test unit, a high speed resistance meter and a data acquisition system (PC). JEDEC Condition B (1,500G and 0.5milliseconds duration time and half-sine pulse) in JESD22-B111 Table 1 or in JESD22-B104-C Table 1 is applied as a test condition. After the drop test, the joint geometry and the intermetallic compound (IMC) of failure samples are analyzed through the cross section method. The result shows no breaks at the solder joint of package side. All breaks, however, are originated from the solder joints of main board side. It is a significant outcome of this work to show no performance difference between ENEPIG and Electrolytic Ni/Au.

The Data Acquisition of High Speed A/D Conversion Based on STC12C5A32S2 SCM

2012 ◽  
Vol 182-183 ◽  
pp. 670-675
Author(s):  
Cheng Ying Wu ◽  
Zhan You Fan ◽  
Hong Jiao Ma ◽  
Zai Min He ◽  
Zhao Ming Wang
Keyword(s):  
Data Acquisition ◽  
High Speed ◽  
Low Cost ◽  
High Accuracy ◽  
Single Chip ◽  
Digital Signals ◽  
Single Chip Microcomputer ◽  
Display Module ◽  
Analog Signals ◽  
Lcd Display

In order to achieve high-accuracy, high speed and low cost A/D conversion, a new design based on STC12C5A32S2 single-chip microcomputer (SCM) is given. Compared with the previous A/D conversion, the biggest advantage is that the paper combine software with hardware and it can adjust the speed of transformation through procedure.We don't need to modify circuit, just need to modify signals of input and procedures. So the flexibility of A/D conversion can be enhanced, also saved costs. The design mainly makes use of new function of STC12C5A32S2 SCM to realize conversion between analog signals and digital signals. In order that researchers can analyze and use the convention results, the design add a LCD display module. The paper primarily analyses the design of circuit and interface technology between the SCM and other chips. Also, the peculiar function of STC, the LCD display method of LMB202DDC and the flow of software are expounded in detail. The simulation result based on Proteus is given by the end of paper.

Data Acquisition of BZD Low Burst and Intelligent Protection in the Mine

2012 ◽  
Vol 529 ◽  
pp. 331-334
Author(s):  
Chun Guang Li ◽  
Jun Mei Geng
Keyword(s):  
Data Acquisition ◽  
High Speed ◽  
Low Cost ◽  
Multiple Frequency ◽  
Single Chip ◽  
Frequency Signal ◽  
High Speed Data Acquisition ◽  
High Speed Data ◽  
The Common ◽  
Rapid Processing

To describe the Underground low-pressure explosion-proof switch which has to require rapid processing of multiple frequency signal, the paper analyzes the specific signal and the common algorithms, according to the characteristics of the explosion-proof switch protection device to provide the high-precision, low-cost and high-speed data acquisition methods based on the single chip controller, which is also applied the BZD low burst intelligent protection.

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