电机保护器中转速测量的实现

Realization of Tachometric Survey in Electric Motor Protector

介绍了一种通过转速测量实现电机保护的智能仪表。以AT89S51单片机为核心,采用霍尔开关,并充分利用单片机系统固有资源,通过简单有效的测量算法,快速实现电机转速测量。仪表具有可靠性高、抗干扰能力强、测量速度快、测量精确,电路简单、成本低,安装和使用方便等特点。

Introduces an intelligent apparatus, which realizes to protect motor by the tachometric survey. This apparatus takes the AT89S51 as a core, applies the hall switch and utilizes fully the inherent resources of single chip microcomputer system to realize fast the tachometric survey of motor each minute through the simple ef- fective survey algorithm. The appliance has excellent characteristics, such as the high reliability, the strong antijamming ability, the quick survey speed, the measuring accuracy, the simple circuit, the low cost, easy to install and ooerate and so on.