The structure of a sensor node for wireless network for environmental radiation monitoring is described in the article. The sensor node is developed on the base of semiconductor detector, modern microprocessor technology, and a last-generation telecommunications radio module. A new algorithm for measuring the power of the exposure dose of ionizing radiation has been investigated in the article. The amount of ionizing radiation energy absorbed by the human body affects the degree of radiation

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... ree of radiation damage to its functional organs radically. In order to solve this problem we are working on improving the parameters of detectors, as well as the characteristics of electronic modules of detecting systems and creating software for controlling the detection process, collecting and processing information digitally, and presenting it properly to users in online mode. A wireless sensor network (WSN) is a distributed, self-organizing network of multiple sensors (sensors, motors, etc.) containing "Motes" (a specks of dust), so named because of the tendency to miniaturization and Executive devices combined with each other through the radio channel. The coverage area of such a network can range from several meters to several kilometers due to the ability to relay messages from one element to another. The motes usually contain battery-powered autonomous microcomputers (controllers) and transceivers. That allows the motes to self-organize into specialized networks, communicate with each other and exchange data. The role of human changes significantly in the model of sensor networks, since their elements – sensor microcomputers – become much more independent, often anticipating human requests long before they are received. "Homocentric" model of network computing with a human as a central link belongs to the past − a human moves from the center to the periphery and concentrates on the process managing, becoming a kind of an intermediary between the real world and computers.