Power and data transmission

A second example of encapsulation is a contactless operating plug-and-socket system with integrated electronics suitable for zone 1 application (Figs 6.37 and 6.38). The system allows power and data transmission with PROFIBUS DP/VI. The socket with an integrated pigtail cable is attached to a terminal box in increased safety - e Within the socket, the 24 V DC power... 

Wearable technologies for personal protective equipment embedded textile monitoring sensors, power and data transmission, end-life indicators... 

Mostly three types of metallic materials (Mestrovic et al., 2007) are considered for powering and data transmission purposes their main properties are summarized in Table 23.1. 

Vermeersch, O.G., Begriche, A., Decaens, J., Mlynarek, J., 2013. Wearable technologies for PPE power and data transmission, environment monitoring, temperature, alarms, embedded textile sensors, end-life indicators. In 3rd International Conference of Engineering Against Failure (ICEAF III). 

The operator terminal according to Fig. 6.203 is intrinsically safe in total. An individual electrical circuit connected to a suitable Ex i-isolator is used for power supply and data transmission respectively, the latter attached to an automation device. 

On June 08, 1994 a bottom mounted current profiler RDI BB-ADCP 600 kHz was deployed at some hundred meters distance from the station in order to collect current velocity data. The accuracy of the velocity data is of about 0.4 cm/s. On July 15, 2003 this device was replaced by an WH-ADCP 300 kHz device, mounted in a trawl resistant frame 100 m away from and connected to the measuring pile via a cable for power supply and data transmission. Because of the different device type the accuracy of the velocity data has changed to 1.1 cm/s. The uncertainty of depth allocation of the current measurements to the T-S samples is estimated to 0.5 m. The provided data files contain daily mean values averaged from 0 00 to 23 59 UTC at four depth levels for the period from December 1, 1991 to December 31, 2006, including the major inflow events of 1993, 1997, and 2003. 

Power Supply and Digital Processing Units which will provide interfaces to the PLM for power, commands and data transmission. 

Ordinary electrical equipment cannot be installed in zone 0, even when it is flameproof protected. However, many chemical and oil-processing plants are entirely dependent upon instrumentation and data transmission for their safe operation. Therefore, very low-power instrumentation and data-transmission circuits can be used in special circumstances, but the equipment must be intrinsically safe, and used in conjunction with a safety barrier installed outside the hazardous area. Intrinsically safe equipment must be marked Ex ia or Ex s , specially certified for use in zone 0. 

Bluetooth (Bluetooth, 1999) is a wireless protocol using the license-free ISM band to connect mobile and desktop devices such as computers and computers peripherals, handheld devices, cell phones, etc. The aim is to produce low-cost, low-power, and very-short range devices able to convey voice and data transmissions at a maximum gross rate of 1 Mb/s. Bluetooth uses frequency hopping spread spectrum (FHSS) with 1600 hops/s. For voice, a 64 kb/s full-duplex link called synchronous connection oriented... 

The conversion factors are presented for ready adaptation to computer readout and electronic data transmission. The factors are written as a number equal to or greater than one and less than 10, with six or fewer decimal places. The number is followed by E (for exponent), a plus or minus symbol, and two digits which indicate the power of 10 by which the number must be multiphed to obtain the correct value. Eor example ... 

Each of these sectors use their own specific products and favorite bus systems. Diversity in data transmission rates and different power requirements makes it unlikely that one standard bus system will develop. Products with interfaces for different bus-systems are also available, but production costs are too high for small companies. In recent years the border between the traditional sectors has become more and more flexible and transparent. Standards in bus systems like EIB and LON have been defined and specified. 

We run Monte Carlo simulations to examine the performance of the sensor selection algorithm based on the maximization of mutual information for the distributed data fusion architecture. We examine two scenarios first is the sparser one, which consists of 50 sensors which are randomly deployed in the 200 m x 200 m area. The second is a denser scenario in which 100 sensors are deployed in the same area. All data points in the graphs represent the means of ten runs. A target moves in the area according to the process model described in Section 4. We utilize the Neyman-Pearson detector [20, 30] with a = 0.05, L = 100, r) = 2, 2-dB antenna gain, -30-dB sensor transmission power and -6-dB noise power. 

Optical Multichannel Analyzer System (OMA 2). The OMA 2 system consisted of a PARC Model 1215 console, two PARC Model 1254 SIT detectors, two PARC Model 1216 detector controllers, and a PARC Model 1217 flexible disc drive. The SIT detector is controlled by the 1216 detector controller, which provides both power and scanning voltages and processes the signal for transmission to the OMA 2 console. The OMA 2 console performs all necessary control functions, data acquisitions, data processing and storage of spectra. The system can store 250 (500 points) spectral curves when equipped with the Model 1217 flexible disc drive. 

---