一种便携式微生物培养箱的研制及效果验证

摘要

目的：研制一种便携式微生物培养箱，解决饮用水及食品卫生学检测中微生物指标现场培养的问题。方法根据饮用水或食品中不同微生物指标对培养温度的限定要求，科学设置培养温度；对箱体温度通过单片机和组态屏实现PID控制；进行箱体设计组装；最后对培养效果开展实验验证。结果研制的便携式培养箱结构紧凑、携带方便、温度偏差≤±1℃、自带电池充满供电时间≥8h；实验表明对微生物指标的培养效果与实验室常用的电热恒温培养箱无显著差异。结论本装备适用于饮用水及食品中微生物指标的现场检测，对于野战或应急情况下及时发现和排除微生物污染隐患，保障部队官兵身体健康具有重要意义。%Objective To develop a portbable incubator for on-site cultivation of microorganisms in foods and drinking water.Methods Cultivation temperature was set as required by the temperature for various microorganisms and PID was controlled via the single chip microcomputer and configuration screen .Then, the framework of the incubator was designed and assembled.Finally, the cultivation effect was tested .Results The incubator was compact and portable .The deviation of the temperature was in the range of 1℃.The hold time of self-contained power could exceed 8 h.In addition, the cultivation effect of our fabricated incubator was not significantly different from that of the commercial electro-heating standing-temperature cultivator used in laboratories .Conclusion The incubator is suitable for on-site detection of microorganisms in foods and drinking water , which is significant for spotting and removing the hidden dangers from microorganism contaminations in foods and drinking water in order to protect the health of soldiers .