對于機器人，我使用H501型單極霍爾傳感器。在這種情況下，單極意味著傳感器僅檢測磁體的正極。當施加正磁場時，輸出變為高電平狀態；當該磁場不再存在時，輸出降至GND。 另一個重要功能是施密特觸發器。這是一個比較器電路，它將線性輸出信號轉換為方波信號，以便FPGA可以讀取。傳感器具有此電路很重要；否則必須在外部構建。
傳感器由機器人的3.3V車載電源供電。小鋁箔塑料電容器用于抑制干擾。輸出信號需要一個值為100k的上拉電阻。
然后，我將此電路轉移到Eagle，并訂購了電路板。PCB可以很好地裝入機器人中為其提供的支架中。
傳感器的行為： 輸出狀態：條件： 0 =》無磁場 1 =》正磁場 注釋顯示傳感器可以檢測到兩種狀態。如果傳感器未檢測到磁場，則輸出端存在低電平。僅當傳感器檢測到磁體的南極時，才發生高電平。當不再存在磁場時，輸出會回落到較低的水平。 在下面的示波器圖中可以很容易地看出這種現象。方波信號顯示了機器人移動時霍爾傳感器的輸出
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