Учебный лабораторный комплекс "Микропроцессоры"
Educational laboratory complex "Microprocessors" is designed for familiarization of students of high technical educational institutions with basics of microprocessor technique and opportunity of using of microcontrollers in modern instrumentation.
Educational laboratory complex was designed for studying the subject general physics section "Electricity" and the introduction to the basics of the electrical engineering in 9-11 classes of secondary and special educational institutions.
Provides an overview of the principles of organization of communication in decentralized wireless networks is reviewed. The scheme of the decentralized network and the timing diagram of data transfer between nodes are shown. Investigated the problem of ensuring the effectiveness of collaboration with a number of nodes in low-power networks and consider the possibility of using for this purpose a probabilistic network Protocol data-link layer. The analysis of the algorithm access to the environment in a decentralized network, presents its block diagram. Detail displayed blocks of the algorithm that determine when data transmission from the network node. Through computational experiments on a model of a decentralized network investigated of the dependence of the efficiency of the work of the algorithm access to the airwaves from such temporal characteristics as the delay before sending data and waiting period before attempting to send them. The most loaded time point identified in the network exchange. It is shown that the developed computer program allow to calculate the probable collisions in the air. Suggested hardware implementation of the algorithm based on microcontroller STM32F030F4P6 of ST Microelectronics and transceiver CC1101 of Texas Instruments.
Educational laboratory stend "Digital Electronics" is a sequel to the laboratory complex "Analog Electronics" and introduces students to the basics of digital electronics and the using of basic digital elements in computational technique. Existing set of basic logic elements allows the student to explore their parameters, work and ability of construction more complex circuits and components based their.
Currently many microcontrollers are produced around the world. They belong to different classes, thus may be used in different applications, they differ from each other in architecture and productivity of built-in-processors, peripheral set, memory volume, etc. But at the same time for the concrete task the only one microcontroller is necessary. Unfortunately, there is not "the best" microcontroller for all possible cases. Selection of the microcontroller is complex multicriteria task. The choice depends on many factors, for example the features of the task, designer's skill and preferences, required technical features of microcontroller, economical requirements and even of fashion in some sense. Precise methods for decision of such kinds of tasks are absent. The authors propose to solve the task of microprocessor choice using decision making theory in several steps. The first step is to define expert group. The group formulates criteria list as a base of future microcontroller choice, then during next steps number of choices is reduced sequentially and as result optimal in some sense microprocessor may be selected. The described approach of microcontroller choice may be automated.
Educational laboratory complex introduces students with basics of electronics and circuit design, using modern components. The complex is suitable for students of secondary special and high educational institutions.