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參數(shù)資料
| 型號(hào)： | ATS651LSH |
| 廠(chǎng)商： | Allegro MicroSystems, Inc. |
| 英文描述： | Two-Wire Self-Calibrating Differential Speed and Direction Sensor with Vibration Immunity |
| 中文描述： | 雙線(xiàn)自校準(zhǔn)差分速度和方向傳感器的振動(dòng)免疫 |
| 文件頁(yè)數(shù)： | 10/12頁(yè) |
| 文件大?。?/td> | 438K |
| 代理商： | ATS651LSH |
10
651LSH-DS
Worcester, Massachusetts 01615-0036 (508) 853-5000
www.allegromicro.com
115 Northeast Cutoff, Box 15036
Allegro MicroSystems, Inc.
Two-Wire Self-Calibrating Differential Speed and Direction Sensor with Vibration Immunity
ATS651LSH
Applications Information
Data Protocol Description
Rotation Right
. Referring to figure 1, a ferrous target passes in
front of the sensor (not shown) in the direction indicated. Each
tooth of the target generates a pulse from the sensor. Each pulse
provides speed and direction data. Speed is provided by the
pulse rate, while direction is obtained by measuring the width
of the pulses. A 45
μ
s pulse indicates rotation in the clockwise
direction.
Rotation Left.
Referring to figure 2, when the target changes
direction, the sensor outputs a current pulse of or 90
μ
s, twice
as long as the Rotation Right pulse width. The maximum speed
is limited by the width of the pulse and the shortest Low-State
Duration the controller can resolve.
Figure 1. Target rotation to the right (CW) relative to the sensor gives forward speed.
Figure 2. Target rotation to the left (CCW) relative to the sensor gives reverse speed.
45
μ
s
45
μ
s
45
μ
s
45
μ
s
90
μ
s
90
μ
s
90
μ
s
90
μ
s
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