【正文】 來消除溫度的敏感漂移。 關(guān)鍵詞：電子指南針；磁場傳感器； KMZ52 A pass is an important tool for navigation application on many occasions. Electronic pass internal structure, with no moving parts, can simply and other electronic system interface, so you can replace the old magic pass. And with high accuracy, good stability etc widely used. The paper introduces the positioning system for electronic pass work principle, the magic field sensors are discussed in detail KMZ52 chips working principle, and gives KMZ52 magic field sensors in the design of electronic pass overall design scheme and circuit design, and presents some special treatment. Philips pany production of semiconductor devices KMZ52 is a kind of special used in electronic pass 2d magic field sensors. It adopts magic sensor magoresistance (MR) technology, and reverse technique, and elimination of electromagic signal migration technology to eliminate the feedback is sensitive to temperature drift. Due to external disturbance, the existing system integration of several special antiinterference techniques to improve the system precision. Keywords: electronic pass, The magic field sensors, KMZ52 目錄 摘要 ................................................................................................................................. 1 目錄 ................................................................................................................................. 2 一 方案的論證與比較 ..................................................................................................... 3 方案一：利用一維磁阻微電路芯片 HMC1052感應(yīng)磁場 ................................................ 3 方案二：使用霍尼韋爾 HMC1022 各向異性磁阻傳感電路 ............................................ 4 方案三：采用 Philips公司生產(chǎn)的 KMZ52感應(yīng)磁場 .................................................... 5 二 相關(guān)物理量介紹 ........................................................................................................ 6 ....................................................................................................................... 6 ............................................................................................................ 6 ................................................................................................................... 6 ................................................................................................................ 7 ................................................................................................................... 7 ................................................................................................................... 8 三 電子指南針系統(tǒng)設(shè)計 ............................................................................................... 10 ..................................................................................... 10 .............................................................................................................. 12 （ 1） KMZ52 型號處理系統(tǒng) .............................................................................. 12 （ 2）單片機控制系統(tǒng) ...................................................................................... 12 .............................................................................................................. 14 .............................................................................................................. 15 （ 1）偏差補償及校正 ...................................................................................... 15 （ 2）干涉磁場校正 .......................................................................