RESUMO
It is always very difficult to process the bioelectrical signals, sampling, amplifying and quantifying because of the different sources it comes from and the mechanism it depends on. This paper mainly introduces a method of measuring the peak value of bioelectrical signals, expatiates on the structure, testing result, analysis for error and measure taken for improvement of the circuit designed by this method. At last, the paper also points out that the method is wonderful, simple, easy to carry out, and can be used in many medical systems.
Assuntos
Algoritmos , Encéfalo , Fisiologia , Estimulação Elétrica , Eletrofisiologia , Métodos , Desenho de Equipamento , Microcomputadores , Neurônios , Fisiologia , Sensibilidade e Especificidade , Processamento de Sinais Assistido por Computador , SoftwareRESUMO
This paper mainly introduces the principles of a type of circuit for measuring frequency & duty cycle of low-frequency signals, and its applications in neuron-threshold stimulator. The circuit has the advantages of simple structure and accurate measurement.