INTRINSICALLY SAFE SELF-CONTAINED POWER SUPPLY Russian patent published in 2018 - IPC H02H7/18 E21F9/00 G01R31/00 

FIELD: mining.

SUBSTANCE: invention relates to mining, namely to intrinsically safe devices of shaft automation, and can be applied in the field of technology where it is necessary to use intrinsically safe power supplies. intrinsically safe self-contained power source comprises a battery pack, output of which is connected to the input of the DC-to-DC converter. Output of the converter is connected to the first analog input of the analog-to-digital converter of the microcontroller and to the first terminal of the current sensor, the second terminal of which is connected to the first terminal of the key, second output of which is the output of the device, output of the current sensor is connected to the input of an inverting operational amplifier, output of which is connected to the second analog input of the analog-to-digital converter of the microcontroller, the digital output of which is connected to the control input of the key.

EFFECT: technical result consists in creating a design that provides high reliability and expansion of the functionality of the scheme of an intrinsically safe autonomous power supply based on a battery for use in mobile communication systems of mining plants.

3 cl, 2 dwg