SUPPLY-LINE DEVICE FOR BLASTING Russian patent published in 2003 - IPC

FIELD: blasting operations, electric blasting of charges in mining, construction and other industries. SUBSTANCE: well-known supply-line device for blasting incorporating microcontroller functioning as central control unit, delay fixture in the form of thyristor keys K₁...K_n, each key being connected to proper electric explosion supply line, storage is supplemented with external energy source, voltage converter, unit testing and protecting device, current pickup, voltage pickup, two analog-to-digital converters, information input and display unit. Thyristor keys K₁...K_n are connected to voltage converter and to electric explosion supply line. Current pickup is placed in series between voltage converter and thyristor keys K₁...K_n, its outputs being connected to input of analog-to-digital converter which outputs in their turn are connected to inputs of microcontroller. Information input and display unit, storage and unit testing and protecting device are connected to other inputs. Analog-to-digital converter, voltage converter and thyristor keys K₁...K_n. are connected to inputs of unit testing and protecting device. EFFECT: raised safety and trouble-free blasting operations thanks to control over consumption of energy of electric explosion supply line. 1 dwg