›› 2013, Vol. 26 ›› Issue (10): 47-.

• Articles • Previous Articles     Next Articles

Design of an Automated Urine Analyzer

XIONG Ming   

  1. 〗(School of Automation,Beijing Information Science and Technology University,Beijing 100192,China)
  • Online:2013-10-15 Published:2013-10-23


A urine analyzer based on dry chemistry method is developed,the composition of the system is described,and the systematic error is analyzed.The analyzer uses red,green,and blue LED lamps as the light source for the type of test strip block,and converts the reflection light into corresponding voltage signal by using light batteries and signal conditioning circuitry.The output signal is compared with preset threshold value in the analyzer to yield test results.STM32F103ZET6 is used as the control unit,and the DC output voltage from the D/A converter as the DC bias voltage for the conditioning circuit,so as to compensate for ambient light components errors.Theoretical analysis and experimental data show that the compensation achieved good results.

Key words: urine analyzer;photocell;DC bias voltage

CLC Number: 

  • TP274