MICROCONTROLLER METERING CONVERTER OF RESISTANCE WITH CONTROLLED SENSITIVITY Russian patent published in 2013 - IPC G01R27/02 

FIELD: measurement equipment.

SUBSTANCE: microcontroller metering converter of resistance with controlled sensitivity comprises a microcontroller 1, a controlled source of current 2, a reference resistor (Ro) 3, a measured resistor (Rx) 4, the first RC-filter 5, the second RC-filter 6. Resistors 3 and 4, with the first outputs are connected to the first input of an analogue comparator of the microcontroller 1 and to the output of the current source 2, the second outputs of resistors 3 and 4 are connected, accordingly to the first and second outputs of the microcontroller, the input of the first RC-filter 5 is connected to the output of the first width-pulse modulator (not shown in the fig.), built into the microcontroller 1, the output of the first RC-filter 5 is connected to the second input of the analogue comparator of the microcontroller 1, the output of the second width-pulse modulator built into the microcontroller 1 is connected to the input of the second RC-filter 6, the output of which is connected to the input of control of the current source 2.

EFFECT: expansion of functional capabilities, realisation of a sensitivity control function.