Temperature-sensitive device to detect breathing of animals and birds

摘要

In many animal experiments, it's very common to anesthetize the animals for a long time. However, the experimenters' carelessness may lead to the deaths of the experimented animals because of suffocation. Especially for those animals of importantspecies or being long-term experimented and observed, their deaths may cause losses. In this paper, a simplified on line monitoring system is presented to transduce the breathing air temperature, which is warmer when exhaling and cooler when inhaling into corresponding sound. This will let the experimenter not to give extra look attentively at breath monitoring, and can simultaneously measure the physiological parameters of breathing frequency per minute. Besides, if the anesthetized animal stopsbreathing, the positive/negative saturation signals on OP-AMP in our system will let an adjustable timer send out a second kind of emergency alarm which is initiated when the breath interval exceeds the safe length, so that first aid can be given in time. In this way, the safety of animal experiments can be enhanced.