FORMATION OF THE STRUCTURE AND COMPOSITION OF THE DATA BANK OF THE SYSTEM OF OPERATIONAL MONITORING OF UNIQUE CONSTRUCTION FACILITIES

The subject matter of the article is the system of continuous monitoring of the technical condition of structures and its components. The authors also consider the approach to formation of the data bank based on the cyclic data warehouse. The cyclic data warehouse (CS) is the basic element of the data bank. Portions of data that represent continuous measurements taken in the non-stop mode can be rapidly and efficiently saved into the CS system. CS is a file of a fixed size containing a header and a sequence of objects. Data is supplied into the CS continuously in the cyclic mode: incoming new data portions replace the outdated ones. New items are written over the old ones when the storage time of the latter is expired. Data access in the CS is possible within the period between the recording and replacement of the item. The proposed option of the system of continuous monitoring of the technical condition of structures ensures effective asynchronous data transmission between software modules and servers and data consistency, because: there is no more need for any additional data deletion operations; the fixed size of a CS item allows fast data positioning in the CS file in the course of the random access. CS of sufficient size will provide for the possibility of a long delay in data transmission in case of an abnormal situation occurring in the course of operation of the system of continuous monitoring of the technical condition of structures. Long-term operation of cyclic data warehouses has proven their effectiveness. For example, a cyclic data warehouse is incorporated into a continuous monitoring system of the bridge over the Matsesta River as the core data bank element