參數(shù)資料
型號: MLX90215EVA-AAA-106-BU
廠商: Melexis Technologies NV
文件頁數(shù): 38/46頁
文件大?。?/td> 498K
描述: IC SENSOR PROG LINEAR HALL 4SIP
產(chǎn)品目錄繪圖: MLX90215, PTC-04 Series Side
標(biāo)準(zhǔn)包裝: 1,000
傳感范圍: 無限制
類型: 線性 - 可編程
電源電壓: 4.5 V ~ 5.5 V
電流 - 電源: 6.5mA
電流 - 輸出(最大): 2mA
輸出類型: 模擬,比率
特點: 穩(wěn)壓電壓
工作溫度: -40°C ~ 85°C
封裝/外殼: 4-SIP
供應(yīng)商設(shè)備封裝: 4-SIP
包裝: 散裝
產(chǎn)品目錄頁面: 2792 (CN2011-ZH PDF)
其它名稱: 90215DB106
MLX90215EVA
MLX90215EVA-ND
Gear Tooth Sensor Magnetics
In order to detect the passing gear teeth with a Hall effect sensor it is necessary to provide a source of
magnetic energy. The simple way to do this is to arrange a permanent magnet such that the axis of mag-
netization is pointing toward to surface of the gear teeth. As a tooth moves across the surface of the
magnet the flux will become attracted to the lower reluctance path provided by the ferrous steel struc-
ture. When this occurs the flux density measured by the Hall element between the face of the sensor and
the gear tooth increases. Many schemes have been developed and some patented that use the various
attributes of the vector flux field and its changing nature to create zero speed Hall effect gear tooth sen-
sors. Melexis has chosen to work with digital signal processing schemes and in this way minimize the
magnetic circuit manipulation required of the end user. Put simply, by applying silicon "smarts" the
magnetic subtlety and slight of hand is nearly eliminated.
Figure 25, Geartooth Flux Transitions
Magnetic modeling courtesy of AnSoft
TM
magnetic modeling software.
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