【摘要】 以高精度基准为参照,采用自适应技术对电压、电流、电阻采样样本进行归一化校准,用数字滤波软件进行后处理,提高了测量的准确度、性价比及抗干扰能力,采用程控增益控制,扩大了量程,同时方便了用户,采用接口保护电路,解决了误接产生的仪表损坏及故障诊断问题。主机采用RS 485与分机联网,能实时地对分机进行监控,并为并网提供了条件。更多还原

【Abstract】 Referring to the baseline of high precision, samples of voltage, electric current and resistance are adjusted towards the same direction by adaptive technology. The measurement precision and anti-interference ability are improved by digital filters technology, which leads to the improvement on the ratio of quality to price. The range of measurement is enlarged and users feel more convenient by using the programmed gain control. The management computer adopts RS-485 communication method to network with workstation, monitoring the workstation in real time, and provides the opportunity to incorporate in power network.更多还原