Computers Labview

Experimental setup Using EEG data monitoring equipments from Nihon Kohden, an EEG cap with 19 chan-nels/electrodes were placed on the scalp of a subject based on 10-20 electrode placement systems. The robot is connected wirelessly to the EEG machine and a computer. Labview program from a computer was used to send signal to control the robot and at the same time create trigger data to EEG machine. The signal sent wirelessly to the robot via Xbee connection while connection to the EEG machine is via NI-USB6008. 

Signals from detectors were monitored on-line by Virtual Bench-Lab View computation programs or labVIEW 7 programs. Treatments of data were done using Origin 6.1. 

In addition to computational chemistry, another use of computers in lab is the use of computers in the collection of experimental data. Two cited experiments (101,102) described the use of LabView in the physical chemistry laboratory, while the third involved computer data acquisition in an osmometry experiment (103). 

Overall, most of the requirements for a process spectrometer/analyzer are straightforward to implement, but they do require attention at the design level. Another important area, which is FTIR-specific, is the user interface and the need to provide for industry standard data communications. Standard software packages do exist for process instrumentation. For prototype development, and even for the front-end interface in a standalone mode of operation, software products, such as Microsoft s Visual Basic and National Instruments LabView, are also important instrumentation development tools. Note that National Instruments also provides important computer-based electronics and hardware that meet most of the computer interfacing, and system control and communications needs for modem instrumentation. 

Another important aspect during the development in the laboratory is that the plant set-up changes frequently. Hence it is highly desirable to work with a flexible and self-explanatory PCS system which is fully adjustable by the user to any specific process set-up. For this purpose, modular built-up software based on the computer language LabView , often used for laboratory applications, was developed and combined with also modular constructed hardware [77]. 

For each decay time measurement, 256 or more measurements should be averaged and the decay curve transferred to a computer. The means to accomplish this transfer can be provided by software from the oscilloscope manufacturer, LabVIEW, or a custom program developed for this purpose. Once the decay curve data are available, they may be imported into a spreadsheet for determination of k using... 

Both the vertical and horizontal sphere displacements can be measured using a photoelectric sensor. During the wear experiments the fiictional and the normal forces, the vertical (linear wear) and horizontal sphere displacement, as well as the electrochemical parameters (current and potential) is continuously monitored using a Macintosh computer ruiuiing on LabView-Language-based software developed in LMCH of the EPFL. 

The power supply to the electrolyser was a Model 710 from The Electrosynthesis Company, Inc. of Lancaster NY. It was operated in constant current mode rather than in constant voltage mode. The maximum current and maximum voltage available was 50 amperes and 20 volts, respectively. In addition to current measurement provided by the power supply, a calibrated shunt was connected to the output to allow for independent measurement of current. Voltage taps independently connected to the cell electrodes were connected to the data acquisition system (DAS). The instrument signals from thermocouples, pressure gages, and flowmeters were connected to the DAS, which was comprised of a Dell computer with special acquisition boards and Labview software. Observations and some data were manually recorded in a laboratory notebook. 

A digital acquisition card (DAC) connected to a computer (National instruments) for reading the photodetector signal in real time. The signal acquisition is controlled by a Labview-based application. 

Film thicknesses were measured with a profilometer (DekTak II). Electron microscope images were obtained using a field-emission scanning electron microscope (JEOL JSM-6401F). Electrical resistances (DC) were measured with a programmable electrometer (Keithley 617). A low-current scanner card and switch system (Keithley 7158/7001) was used to multiplex measurements over ten sensors fi om two sensor arrays. Instruments were controlled and read by computer using a GPIB interfece and LabView software. 

The outlet gas oxygen content, operating temperature, and cell voltage and current data were fed to a National Instruments data acquisition unit and recorded once a second by a Labview computer program. 

While early FIA analyzers were operated manually and data acquisition and display was typically accomplished with chart recorders, the effective implementation of SIA requires microprocessor control of the timing and hardware synchronization steps. Use of a computer has the added benefit of digital data acquisition and processing of the results. Many dedicated software programs have been developed in-house in Turbo C-H-, Visual Basic, Basic, and LabVIEW (Lenehan et al., 2002). Nowadays, SIA analyzers are commercially available accompanied by dedicated control and acquisition software (Lenehan et al., 2002 Ruzicka, 2014). 

The flow-batch manifold is controlled by an electronic actuator connected to a Pentium four microcomputer through a Labview 5.1 visual programming language computer program. 

Two different computer interfaces were created for datalogging for both wearable accelerometer subsystem and instrumented platform. The datalogging interfaces were created using both Microsoft Visual Basic and National Instruments LabView Software. All data could be exported as text file for further analysis. Both interfaces provided realtime display on data collected by both subsystems. Fig. 4 shows the interfaces of the subsystems. 

LabVIEW (computer) The ECG signal is processed by a system developed in LabVIEW to calculate and display the value of heart rate and oxygen saturation. It is also programmed to send the packets of heart rate and oxygen saturation data from the LabVIEW transmitter station via RE module (USB access point), which is wirelessly paired with the existing transceiver in the eZ430-Chronos watch. 

Abstract— In this study, a wireless sensor network (WSN) for flexible pH array sensor has been developed by virtual software of National Instrument (NI) Laboratory Virtual Instrument Engineering Workbench (LabVIEW). The measurement data were received from measurement node and sent to a gateway connecting with computer through WSN. The WSN has been combined successfully with flexible pH array sensor. And the sensitivity and linearity of the flexible pH array sensor received through WSN are 53.39 mV/pH and 0.990 in pH concentrations between pHl and pH13 at room temperate (25 C), respectively. Therefore, the developed WSN can be applied to the flexible pH array sensor practically. 

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