基于DSP的电源故障检测方法

针对传统电源故障检测结果不够准确、有遗漏故障点的现象,提出了基于DSP的伺服系统电源故障检测方法。通过DSP设备来辅助故障检测工作,进而提高电子产品中电源故障的准确性。DSP设备可将传统检测中的弱电流信号替换为强电压信号,提高故障检测的准确度。通过对比试验,验证了有DSP设备参与可大大提高电源故障检测的准确度,证实了DSP设备的实用价值。

容性设备绝缘监测数据采集系统硬件电路设计

介绍了容性设备在线绝缘性能检测系统中,数据采集硬件电路的设计思路。采用DSP技术实现数字滤波和相位换算。提高了系统的抗干扰能力。16位双极性A/D转换器,大大提高了信号的精度。采用程控增益的办法,提高了系统增益的稳定性。现场采集的实时数据来看,交流信号电流幅值偏差在±5%之内,相位的误差为0.3%,并且硬件系统稳定可靠。

单片机实现的数码录放机

采用单片机作为主控核心,利用TP3057芯片实现语音的编/解码,D6571芯片实现模/数转换和压缩以及数/模转换,采用FlashROM存储技术,实现了语音的存储与回放功能。介绍了语音存储与回放系统的原理,硬件结构和程序设计。

Research and implementation of digital detection method on closed loop FOG

In the strapdown inertial navigation system, the Fiber Optical Gyro(FOG) must have high precision to give accurate navigation information. In this paper, a digital closed loop detection method based on the ramp wave modulating technigue is introduced. DSP and FPGA have many advantages in digital signal proeessing. In the design, by using DSP, a complex arithmetic operation is completed to meet the needs of closed loop control of FOG within a short time. All kinds of control signals are produced easily by FPGA, under which DSP could work properly. Combining the DSP and FPGA,the detecting method is implemented successfully. In the end, the result of test and performance is given. From the result we can conclude that the precision of FOG is improved and the noises are limited to a low level.