Postmortem measure interval resistance meter
Ping Xiong · International Electronic Elements · 2007
This design consists of intelligent human body resistance determine system together with constant current source circuit,double frequency alternating current generator,alternating measurent circuit,double single chip computer interior communication and real-time exterior seriral communication.First of all,it is measured automatically various parameter of case place by single chip computer and sensor,then date is collected,ADC is changed and date is storaged by single chip computer,storaged data is transmitted computer by RS232,then computer classify resistance,frequency,measure time,measure speed,measure temperature.Automatically fit measurement curve,through analysis,finally it is determimed to postmortem measure interval(PMI).