基于CPLD的相对转速测量仪研制

Design of Relative Rotation Speed Measuring Instrument Based on CPLD

介绍了一种新的基于CPLD的相对转速测量仪的原理和设计。以ispMACH4512芯片为核心,采用等精度频率测量法,设计了可设精度的十进制除法器。试验测试结果达到了设计精度,满足了发动机转速的测量要求。仪器的研制对发动机转速的监控和故障诊断具有非常重要的现实意义。

The principle and the design of a new relative rotation speed measuring instrument based on CPLDs are introduced. Using the equal precision frequency measurement, taking ispMACH4512 as the core chip, the decimal divider was designed, of which the precision is adjustable. The results show that it acquires the accura- cy designed and the request. It has a great significance in accomplishment of the remote fault diagnosis and monitoring for the engine＇ s rotation speed.