随着科技的发展，防丢系统正朝着高精度，体积小，多点式，可靠性高，易于安

With the development of science and technology, the anti-lost system is rapidly developing in the direction of high precision, small size, multi-point type, high reliability and easy installation. This system is generally small, environmentally friendly, easy to carry, strong practicality, simple operation and so on. These functions can bring great convenience to users. The devices used in each part are common components, and the price is also very cheap, suitable for use in a variety of occasions. At this stage, it can basically meet the needs of common loss alarms. Lost alarms will play an increasingly important role and be applied to all aspects of life. They can also be used for personal and family protection and entertainment. It plays an important role in the safety of people's property or life and physical and mental health, and becomes an anti-theft product suitable for public consumption. <br>Of course, due to limited knowledge, there are some deficiencies in this design. For example, if GPS positioning is used, the system will be more intelligent. The anti-lost effect will be better. Therefore, the system needs to be further improved and optimized to meet people's individual needs.

随着科技的发展，防丢系统正朝着高精度，体积小，多点式，可靠性高，易于安装的方向迅速发展。本套系统总的来说具有小巧，环保，方便携带，实用性强，操作简单等特点。这些功能能够给使用者带来很大的方便。各部分所用器件均为常见元器件，价格也很便宜，适合在多种场合中使用。在现阶段，基本上可以满足对常见丢失报警器的需要，丢失报警器将会发挥越来越大的作用，并且应用到生活中的各个方面，也可作为个人及家庭保护和娱乐使用，将对人民财产或人生安全和身心健康起到重要的作用，成为一种适合大众消费的防盗产品。<br>当然，由于所学知识有限，此次设计也存在一些不足，比如，如果采用GPS定位，系统会更加智能。防丢效果会更好一些。所以该系统有待进一步改善和优化，满足人们个性化的需要。

With the development of science and technology, the anti loss system is developing rapidly in the direction of high precision, small size, multi-point, high reliability and easy installation. The system is compact, environmental friendly, portable, practical and easy to operate. These functions can bring great convenience to users. The components used in each part are common components, the price is also very cheap, suitable for use in a variety of occasions. At this stage, it can basically meet the needs of common loss alarms. The loss alarms will play an increasingly important role in all aspects of life. It can also be used as personal and family protection and entertainment. It will play an important role in people's property or life safety and physical and mental health, and become an anti-theft product suitable for public consumption.<br>Of course, due to the limited knowledge, there are some shortcomings in this design, for example, if GPS positioning is adopted, the system will be more intelligent. The anti loss effect will be better. So the system needs to be further improved and optimized to meet people's personalized needs.<br>