DEVICE CONTROLLING VIBRATION LEVEL Russian patent published in 2003 - IPC

FIELD: vibration measuring technology. SUBSTANCE: device incorporates vibration transmitter that includes piezoelectric accelerometer and amplifier- integrator placed in series with it and put in one case. Output of vibration transmitter is connected to one input of scaling amplifier. Another input of scaling amplifier is connected to output of unit forming discrete reference levels which sends signal of fixed settings through switches to scaling amplifier. One output of scaling amplifier is connected through signal processing unit to unit of acoustic listening, its another output is connected through detector to inputs of comparators placed in parallel to fix excess of setting level by three corresponding levels: standard, dangerous, emergency. Outputs of two comparators are connected to inputs of proper indicators and output of comparator " emergency " is connected to input of corresponding indicator and through delay unit to inputs of final-control relay and unit of sound warning placed in parallel. EFFECT: raised authenticity of control, noise immunity of device and its efficiency. 2 cl, 1 dwg