The paper lists the most common methods for detection of intersections and an algorithm for resolving conflicts of flat two-dimensional objects with complex non-convex shapes. The developed algorithm is characterized by the absence of a convex decomposition of non-convex objects. Examples collision resolution two non-convex objects. The estimation of the average time of resolution of conflicts. The efficiency of the algorithm, which works in more than three times faster than considered unique.

Keywords: collision detection algorithm, flat two-dimensional objects, non-convex contours, convex decomposition, algorithm GJK / EPA, Minkowski sum, separating axis theorem

The article is devoted steps for the development technical support for crane operator training complex. An important component of technical support is a wireless terminals. Formulated a list of requirements for a wireless terminals: correct operation of the program crane simulator, reliability, compactness, wired and wireless communications to PC, flexible configuration, self-diagnostics, low price. Mobile Remote includes  terminals and host. The host is connected to PC via USB interface, as USB HID device. Terminals transmits the information to a host by Bluetooth. Selected hardware base for the terminals and host (microcontrollers, wireless modules, batteries) and designed printed circuit boards. Investigations of the different batteries and the battery life time of terminals. The description of the design decisions, especially this development.

Keywords: Computer simulator, wireless terminals, microcontroller, battery, USB HID device