title: [An approach to a negative pressure automatic control system in electronic endoscope].
abstract: OBJECTIVE
  The work presented here was to research into a kind of automatic control system that would be automatically linked to the working status of electronic endoscope.
  
  
  METHODS
  The image video output signal and signal of negative pressure sensor were used to be a sampling signal of automatic control circuit. An electronic switch of automatic control circuit was challenged the manual control device of the negative pressure system.
  
  
  RESULTS
  This system simplifies the operation procedures, enhances work efficiency, reduces energy consumption and improves the service life of the machine.
  
  
  CONCLUSIONS
  The paper concludes that this negative pressure automatic control system has many strengths like stable performance, easy installation and strong versatility. It also can be widely applied in different brand and different types of electronic endoscope in China.
authors.affiliation: Yue Bei People's Hospital, GuangDong 502126, China. gdsgljh@sohu.com
authors.forename: Jihan
authors.initials: J
authors.lastname: Li
authors.forename: Bin
authors.initials: B
authors.lastname: Chen
authors.forename: Peiling
authors.initials: P
authors.lastname: Zhu
authors.forename: Fuqiang
authors.initials: F
authors.lastname: Liu
mesh_terms: D001331:Automation / Q000295:instrumentation* / Q000379:methods*; D004581:Electronics; D019723:Endoscopes; D004867:Equipment Design; D012985:Software Design