在奶牛养殖业中，奶牛的发情检测在奶牛繁殖管理中具有重要地位，及时发现奶牛发情有利于提高奶牛的繁 殖率和产奶量，增加经济效益。因此，奶牛发情及时和准确鉴定变得举足轻重，传统的人工观察奶牛发情方法已不适应现代奶 牛养殖业的发展要求。本文将介绍以STC89C52 单片机、加速度传感器ADXL345 为核心的奶牛计步器的采用技术及设计过 程，以及基于加速度传感器的奶牛计步器目前发展状况和发展趋势，可实现对奶牛走路所产生步数的自动监测及显示。

In the cow breeding, cow oestrus detecting has an important position in cow breeding management, which can improve the cow's reproduction rate and milk production and increase the economic efficiency. Therefore, it is very important to identify cow oestrus in time and accurately. The traditional method of observing the cow oestrus is not adapted to the development of the modern dairy industry. This paper introduces the technology and design of cow pedometer based on STC89C52 microcontroller, ADXL345 accelerometer, and the development situation and trend of the cow pedometer based on acceleration sensor, achieving the display and automatic monitoring of the steps of cow walking.