監(jiān)測(cè)前端提供工業(yè)系統(tǒng)實(shí)時(shí)功率檢查

　　監(jiān)測(cè)前端提供工業(yè)系統(tǒng)實(shí)時(shí)功率檢查

　　電力線(xiàn)完整性已成為工業(yè)和醫(yī)療設(shè)備設(shè)計(jì)的一個(gè)重要方面。許多過(guò)程現(xiàn)在依賴(lài)于傳感器的輸入，容易受到噪聲和干擾的實(shí)時(shí)監(jiān)測(cè)。電瞬變很容易擾亂精密測(cè)量。如果這些條件沒(méi)有得到補(bǔ)償，不正確的讀數(shù)可能會(huì)導(dǎo)致閉環(huán)控制回路遭受像差或系統(tǒng)丟失重要的安全相關(guān)的信號(hào)。

　　其結(jié)果是，某些形式的交流線(xiàn)路監(jiān)測(cè)已成為一個(gè)重要的額外的傳感器輸入，以確保瞬變和其他電力線(xiàn)扭曲不影響設(shè)備。電力線(xiàn)監(jiān)測(cè)可以用來(lái)確保其他高功率設(shè)備使用的電源轉(zhuǎn)換器正常工作，不注入不必要的諧波或呈現(xiàn)不平衡負(fù)載到電網(wǎng)，這可能會(huì)破壞電力輸送。用戶(hù)還可以使用數(shù)據(jù)來(lái)確定進(jìn)程是否需要優(yōu)化，以減少整個(gè)工廠(chǎng)的功耗使用熱點(diǎn)跟蹤整個(gè)能源消耗。

　　Most AC line monitor designs use one or more analog-to-digital converters （ADCs） to convert power line signals into a digital format and then apply digital signal processing using a local processor to derive useful operating parameters such as peak and average power output， power factor angle， harmonic voltage amplitude and line frequency.

　　The key question over designing an AC line monitoring subsystem is to determine which types of measurement are important as these will influence the choice of ADC used to sample the inputs， as well as the number of input channels. For example， a three-phase monitor used to determine harmonic distortion will need to sample both voltage and current for a total of four phases， resulting in a requirement for eight ADC input channels. The fourth phase that needs to be sampled is the neutral line： this will show current flowing if the main phases are unbalanced.