CONTINUOUS SOIL HARDNESS DETERMINATION DEVICE Russian patent published in 2014 - IPC G01N33/24 

FIELD: measurement equipment.

SUBSTANCE: invention relates to technical measurement devices of physical and mechanical soil properties. The device includes a strain link, in-series connected pressure sensors and functional supercharge transformers, at the turbocompressor inlet and underpressure of turbocompressor, and an analogue-to-digital converter, a soil hardness detector, a communication factor setting device, an indicator, a crank shaft speed sensor and a tachometer, a corner mark shaper, a functional angular speed transducer, a differentiator, an upper dead point (UDP) sensor, a UDP pulse shaper, a corner mark counter, an analogue UDP switch, a cycle corner mark setting device, a null detector, a functional converter of the number of pulses to voltage, a corner mark shaper of a cylinder, a retunable resonant filter, a strobe shaper, an analogue switch of cylinders, a setting device of numbers of corner marks of cylinders, the first and the second meters of average rectified, maximum and mean-square values, from the first to the third switches, in-series connected angular speed sensor of a rotor of a turbocompressor, a functional angular speed converter of the rotor and a double differentiator, and a generator current and voltage meter.

EFFECT: simpler and higher accuracy and flexibility of hardness determination of any non-homogeneous soils with ploughing outfits.

10 dwg