MVI69E-LDM實(shí)際工作中我都會(huì)將模擬量信號(hào)轉(zhuǎn)為標(biāo)準(zhǔn)信號(hào),如果它本身就是標(biāo)準(zhǔn)信號(hào)更好,否則我會(huì)給它加變送器,例如溫度采集時(shí),我就用溫度變送器將熱電偶的信號(hào)轉(zhuǎn)換為4-20MA電流信號(hào)或1-10V電壓信號(hào)。(好像有直接采集溫度的模塊,但我沒(méi)用過(guò))如果可以盡量采用電流信號(hào),這樣干擾會(huì)小一些。信號(hào)線采用有屏蔽層的那種。然后就要考慮濾波問(wèn)題了,因?yàn)楦蓴_的存在,所以濾波。濾波方法有很多種:求平均值法,低通法等大概有10種左右,有時(shí)候要多種方法一起用。這要看你現(xiàn)場(chǎng)干擾情況了,實(shí)在不行在輸入端并個(gè)電容,硬件濾波。這樣我們將得到一個(gè)比較平和的模擬量,也就是我們要控制的那個(gè)量,溫度,壓力,流量,電壓,電流等模擬量都可以這么采集,頻率我不知道是不是有頻率變送器,沒(méi)用過(guò),但是頻率在不是很高的時(shí)候可以由開(kāi)關(guān)量輸入端輸入,頻率高了可以采用高速計(jì)數(shù)器,再高了我就不知道了。
MVI69E-LDM
AB 5130-MRM2/A
Warner 8940-5449/8940-6689
GE 44A398723-G02
Nippon . EIS-25603003
Applied Si5580
Giddings 502-02721-50
Computer HMR90-100Sl
Rexroth AA10VSO
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Siemens 6ES5921-3WB14
Acomel 7114
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Mori T32057A03
Honeywell DCP7215C
BOSH RS06
Mikron 169.5.0116.0
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Braumuller BUH2-90/90-34-101-0
Indiana HQT-B-56C
Packers 7241-5
Gehring HUS14
Modicon AS-M484-100
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Cincinnati 1HU4102
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Marposs 6320610614
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