Preface

Telemetry problematic is based on knowledge of various disciplines like Electronics, Measurement, Control and Communication along with their combination as Computer Networks etc. This fact leads to a need of studying and understanding of these principles before the usage of Telemetry on selected problem solving. Spending time is however many times returned in form of obtained data or knowledge which telemetry system can provide.

Usage of telemetry can be found in many areas from military through biomedical to real medical applications. Modern way to create a wireless sensors remotely connected to central system with artificial intelligence provide many new, sometimes unusual ways to get a knowledge about remote objects behaviour.

This book is intended to present some new up to date accesses to telemetry problems solving by use of new sensors conceptions, new wireless transfer or communication techniques, data collection or processing techniques as well as several real use case scenarios describing model examples.

The book is split to several sections containing one or more chapters. The text starts with a first section "Sensors" (contain 4 chapters) describing new sensor architectures, communication strategies between them as well as description of same modern ways to develop sensors.

Second section "Telemetry Data Mining" introduces problems related to telemetry, satellite, autonomy, etc. This section contains one very well structured chapter.

Telemetry Use Cases focused on the theme of biomedical, medical, animal as well as military, are considered in following four sections containing the rest 16 chapters. These chapters deals with many real cases of telemetry issues which can be used as a cookbooks for Your own telemetry related problems.

#### **Ondrej Krejcar, Ph.D.**

VSB - Technical University of Ostrava, Faculty of Electrical Engineering and Computer Science, Department of Measurement and Control, Centre for Applied Cybernetics, Poruba, Czech Republic

**Part 1** 

**Sensors**

**Part 1** 

**Sensors**

**1** 

*Brasil* 

**Optical Fiber Sensors** 

*Biological and Nuclear Defence Division* 

Marcelo M. Werneck1 and Regina Célia S. B. Allil1,2 *1Federal University of Rio de Janeiro-Instrumentation and Photonic Laboratory-Electrical Engineering Program-COPPE* 

*2Brazilian Army Technology Center-Biological Defense Laboratory-Chemical,* 

Telemetry is a technology that allows remote measurement and monitoring of data. It normally refers to one-way direction of information, that is, from the sensor to the interrogation system or data logger system. Telemetry could be defined as a sub-class of telecom, a more complex way of exchanging information such as Internet, telephone calls or

Telecommand, the counterpart of telemetry, occurs when the remote systems require remote instructions and data to operate, which means that the information goes on the other

Telemetry finds applications in aerospace, automotive, consumer, engineering, industrial

Although the term telemetry commonly refers to wireless data transfer mechanisms (e.g. using radio or infrared systems), it also encompasses data transferred over other media, such as a telephone or computer network, optical link or other wired communications. In the applications mentioned above and particularly in the electric power industry, we find normally protocols that can be either bidirectional or mono directional, such as Fieldbus, RS-485, Ethernet, 4-20 mA, 0-10 V, all working in a twisted-pair basis. These protocols, although being among us for many decades, have disadvantages, particularly when applied to the electric power industry. One of these disadvantages is that data transmitted through electric wires normally need electric energy at the sensor end, or in other words, the transducer needs to be powered in order to measure and transmit data. However, it occurs that sometimes providing electric energy at the sensor location is difficult for it could be far away from any appropriated power supply. This happens in long high voltage transmission lines or along pipe-lines or in deep ocean, for instance. The other problem with these protocols is that they electrically connect the sensor location with the interrogation location. The main consequence of this is that short circuits due to malfunctioning or atmospheric discharges can easily be transferred to the operation room and furthermore putting the

With the invention of the practical optical fiber in the 70´s the world watched a boom in the telecommunication technology. In the 80´s, with the popularity of optical fiber technology, scientists started to develop a new class of sensors and transducers: the optical fiber sensors. They came offering many advantages over the other technologies and soon started to be

applied in telemetry with very good return in costs, maintenance and efficiency.

manufacturing, medical, military, electric power industry etc.

substation personnel and equipment at risk.

**1. Introduction** 

video transmission.

direction.
