【正文】 ....50***對講系統(tǒng)*** .......................................................................51考核點(diǎn)及評分 ...........................................................................55考核說明： ..........................................................................................................................................55考核表 ......................................................................................................................................................555 / 64***閉路監(jiān)控系統(tǒng)***一．?dāng)z像機(jī)1. 基礎(chǔ)知識 a. 什么是 CCD 攝像機(jī)？ 　　CCD 是 Charge Coupled Device(電荷耦合器件)的縮寫，它是一種半導(dǎo)體成像器件，因而具有靈敏度高、抗強(qiáng)光、畸變小、體積小、壽命長、抗震動等優(yōu)點(diǎn)。K 常用探測器調(diào)試中應(yīng)注意的幾個問題 ........................................................................................28a．認(rèn)識 LED 燈況 ..............................................................................................................................28 “預(yù)熱 ” ......................................................................................................................................28c．步測的基本方法 ............................................................................................................................28 .......................................................................................................................................28e．微波探測范圍調(diào)整 ........................................................................................................................28f．紅外探測范圍調(diào)整 .........................................................................................................................29Camp。1 / 64目 錄***閉路監(jiān)控系統(tǒng)*** .................................................................5一．?dāng)z像機(jī) .................................................................................51. 基礎(chǔ)知識 ................................................................................................................................................5a. 什么是 CCD 攝像機(jī)？ ......................................................................................................................5b. CCD 攝像機(jī)的工作方式 ...................................................................................................................5c. 分辨率的選擇 ....................................................................................................................................5d. 成像靈敏度 ........................................................................................................................................5e. 參考環(huán)境照度： ................................................................................................................................5f. 電子快門 .............................................................................................................................................6 .....................................................................................................................................6h. CCD 芯片的尺寸 ...............................................................................................................................6 攝像機(jī)的選擇和分類 ....................................................................................................................6 .................................................................................................................................6 .....................................................................................................................7 CCD 靶面大小劃分 .......................................................................................................................7 PAL 制 , NTSC 制 ...................................................................................................7 .................................................................................................................................7 ..................................................................................................................................7g、按照度劃分 ......................................................................................................................................7： .........................................................................................................................................83. CCD 攝像機(jī)的安裝與調(diào)整 ...................................................................................................................8a. 鏡頭的安裝方式 ................................................................................................................................8 ON/OFF（自動增益控制） .....................................................................................................8c. ATW ON/OFF（自動白平衡）： .....................................................................................................8d. ALC/ELC（自動亮度控制 /電子亮度控制） ...................................................................................8e. BLC ON/OFF（背光補(bǔ)償開關(guān)） .....................................................................................................9f. LL/INT（同步選擇開關(guān)） .................................................................................................................9g. VIDEO/DC（鏡頭控制信號選擇開關(guān)） .........................................................................................9h. SOFT/SHARP（細(xì)節(jié)電平選擇開關(guān)） .............................................................................................9i. FLICKERLESS（無閃動方式） ........................................................................................................9： ........................................................................................................................................10二．?dāng)z像機(jī)鏡頭 .......................................................................10： ...................................................................................................................................................10。 ...................................................................................................