| 摘要 |
FIELD: information and control systems. ^ SUBSTANCE: this line unit is intended for application in information and controlling complexes in which central control desk is realized in the form of central transceiving station and is connected to peripheral controlled points by means of communication line common for them. Proposed line unit is supplemented with units of automatic normalization of level of working signals which secures both extraction of signals coming from communication line but amplification (normalization) of received signals and return of normalized signals into communication line. Thanks to it there is no necessity in breakdown of single communication line into sections, connection to main communication line of great number of controlled points and lengthening of extent of communication line are ensured, functional capabilities and operational reliability of complexes are expanded which makes it feasible to use proposed line unit in structure of systems controlling essential objects. ^ EFFECT: expanded functional capabilities of line unit. ^ 2 dwg |
