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    2. ◆ 追求卓越,共振和諧!  ◆ 定制超聲波壓電陶瓷元件:霧化片 超聲醫療頭 美容頭 美容鏟皮刀 潔牙器振子 陶瓷晶片   ◆ “誠信經營、精益求精”是我們永遠的追求!      >> English   >> 簡體<-> 繁體   >> 加入收藏    
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      聲表面波諧振器


      www.elainecharton.com 2011年10月20日

          

      聲表面波(SAW)諧振器 

        它的作用是用于汽車TPMS、遠程無鍵進入(RKE)、安全系統和有源RFID標簽。 

        隨著科學技術的進步,為對付不斷升級的盜車手段,人們一代一代研制各種方式、不同結構的防盜器,目前防盜器按其結構可分三大類;機械式、電子式和 網絡式。鉤鎖、轉達向盤鎖和變速擋鎖等基本屬于機械式防盜器,它主要是告鎖定離合、制動、油門或轉向盤、變速擋來達到防盜的目的,但只防盜不報警。插片 式、按鍵式和遙控式等都屬于電子式防盜器,它主要是靠鎖定點火或起動來達到防盜的目的,同時具有防盜和聲音報警功能。GPS衛星定位汽車防盜系統(或其他 網絡系統),將報警信息和報警車輛所在位置無聲地傳送到報警中心。一套完整的遙控汽車防盜器應由下面幾個部分組成; 

        (1)主機部分;它是防盜器的核心和控制中心。 

        (2)感應偵測部分:它可由感應器或探頭組成,目前普遍使用的是振蕩感應器,微波及紅外探頭應用極少。 

        (3)門控部分:包括前蓋開關、門開關及行李艙開關等。 

        (4)報警部分:喇叭。 

        (5)配線部分。 

        (6)其他部分:包括不干膠、螺釘及繼電器等配件和使用說明書及安裝配線圖等 

        同移動電話的工作原理相同,遙控式汽車防盜器的遙控器(發射機與防盜主機系統之間除了要有相同的發射和接收頻率之外,還要有密碼才能相互識別。 

      汽車防盜器的好與不好,主要由3個因素決定:防盜器產品質量、防盜器的安裝方法以及防盜的正確使用。

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