The world's contraceptive market demand is increasing, and the contraceptive market is not sensitive to economic recession. These contraceptive products are likely to be used to improve the cost-effectiveness of family planning services and reduce dependence on multiple computers, which puts mothers at high risk. The previous contraceptive products have some large or small defects, which brings a lot of trouble to our use. Today’s latest designs of pacemakers use the battery-free concept. The first is to design an integrated mobile, communication, and processing sensor system so that women can control the birth cycle. Through a pair of underwear, the special sensor can measure the temperature very accurately, regardless of day and night, and can transmit these data to the vicinity of people. The sensor works without a battery, and can convert the radio frequency of a nearby cell phone into energy powerful enough to measure body temperature and inform the user. The popularity of mobile phones and the cost of such sensors are very low, and will decrease as the volume increases. This may become the cheapest family planning device ever.
全球避孕市场需求不断增长，而避孕市场对经济衰退不敏感。这些避孕产品有可能用于提高计划生育服务的性价比，减少对多种计算机的依赖，从而降低母亲的风险。以前的避孕产品存在一些大或小的缺陷，给我们的使用带来了很多麻烦。如今最新设计的节能型避孕器采用无电池的概念。首先是设计一个集成的移动、通信和处理传感器系统，使女性能够控制生育周期。通过一条内裤，特殊传感器可以非常准确地测量体温，不分昼夜，并且可以将这些数据传输到附近的设备上。该传感器无需电池，可以将附近手机的无线电频率转化为强大到足以测量体温并通知用户的能量。手机的普及程度和这类传感器的成本都非常低，并且随着数量的增加而降低。这可能成为有史以来成本最低的计划生育设备。
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