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涼浦夏希
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樓主  發(fā)表于: 2024-08-20 17:03
如題,測距筆可以輸出AB相脈沖,1個(gè)脈沖就代表著(zhù)一段距離,知道脈沖數量就可以知道測距的距離了。師傅要求把AB相脈沖接出來(lái),接到一塊板上,用板實(shí)現脈沖計數功能,然后把計數轉換成電壓值。
目前的問(wèn)題就是這塊板我應該怎么弄?有比較好的思路嗎?然后就是AB相的計數,好像AB相的測距筆的話(huà)是不用回到原點(diǎn)的,再次測距的話(huà)只需要重新累計脈沖數和弄清楚方向就可以了是嗎?
gxtmdb82164
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1樓  發(fā)表于: 2024-08-22 17:40
你這里有個(gè)問(wèn)題,脈沖是復合信號,同時(shí)傳遞了好幾種信息,你要用哪一種轉成電壓?

脈沖的占空比(PWM)這個(gè)本質(zhì)上就是模擬量,這個(gè)最簡(jiǎn)單
脈沖的個(gè)數,這個(gè)要做計數然后轉換,還有就是刷新率或者怎么切這個(gè)脈沖個(gè)數
脈沖的頻率,這個(gè)也簡(jiǎn)單,有專(zhuān)門(mén)的頻率電壓轉換芯片,甚至有成品設備,接線(xiàn)就能用

所以,你要把問(wèn)題描述清楚

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