Dynamit Nobel Gmbh Explosivstoff-Und Systemtechnik

Teltronik Ag

Walter Aebi

Jan Petzold

Andreas Zemla

Heinz Schäfer

Heinz Schafer

When an ignition system is installed, the spatial position of an ignition device (to) in relation to the surrounding, its geographical position, is as yet not determined. The user is required to exercise extreme caution in order to ensure that the ignition devices (to) connect to the ignition system () in accordance with a predetermined blasting plan. A specially trained person must therefore systematically carry out the sequential connection (compulsory sequence) of each ignition device (to) to the bus line () of the ignition system. i.e. logging. The person connecting the ignition devices must execute the ignition of device programming operation in all kinds of conditions, in open country, with utmost caution. This represents a considerable time delay for a blast. If one ignition device is overlooked during logging, the already entered data have to be reprogrammed, which costs time. The invention provides that the geographical position (to) of an ignition device (to) is determined using a satellite-assisted navigation system (GPS) () and this position is conveyed to the logger ().

Method for installing an ignition system, and ignition system

Errors may occur in a detonating system that consists of several detonating circuits when the connection&#x2014;the logging-on&#x2014;of detonators is effected to the buses of a logger which in turn is connected to a blaster. Connecting is effected, particularly in opencast-mining operations, under conditions that may lead to damage, not visible at first, in particular to the insulation of the detonators and also of the detonating lines. Errors may occur in the transmission of data, for example as a result of loss or falsification of the signals to be transmitted or as a result of intrusion of signals from an extraneous detonator. In accordance with the invention it is therefore proposed that a log-on manager is installed which is in bidirectional contact with the loggers, with the blaster and with the log-data communicators of the loggers which signal the data pertaining to the detonators to the logger. The log-on manager coordinates the logging of the detonators on to the respective bus as well as the programming of the detonators and checks whether an error-free transmission of data is taking place.

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Kyburg-Buchegg, Switzerland

Walter Aebi