Большаков Денис Иванович (RU),Мищенко Михаил Андреевич (RU)
申请号：
RU2016148015
公开号：
RU0000170673U1
申请日:
2016.12.07
申请国别(地区):
RU
年份:
2017
代理人:
摘要：
The invention relates to the field of medical electronics and can be used as the analog amplifier in the composition of diagnostic systems encephalography and cardiography operating based biopotential measurement.The technical result from the use of the proposed utility model - improving noise immunity by using in the first stage the primary channel gains precision instrumentation amplifier in combination with a notch filter in channel blocks of the secondary amplification and filtering, and to allow compact execution on a chip basis.To achieve said technical result in a multichannel analog amplifier for electroencephalography, comprising a switching unit having a multi-channel input from the discharging electrode and the multichannel output coupled to its outputs with the inputs of the multichannel unit of amplification and filtering, adapted to connect to a multichannel recording device, and a power supply, proposed a multi-channel amplification and filtering unit consists of a primary detection channel gain blocks connectable ennyh their outputs to the signal inputs of the respective channel blocks secondary amplification and filtering having clock inputs coupled to the common output timing unit, and outputs adapted to connect to respective inputs of a multi-channel recording apparatus, each channel detecting unit of the primary amplification is based on two-stage amplification circuit to the first amplification stage, which is a precision instrumentation amplifier, each secondary flow channel Nogo amplification and filtering comprises sequentially interconnected via an operational amplifier notch filter and a lowpass filter switched capacitor, a timing block is formed as a square-wave generator, and a power supply connected to an external power supply line, wherein said detection units and primary amplification blocks secondary amplification and filtering, timing and power supply unit provided on a chip basis.Полезная модель относится к области медицинской элект
