隧道外照度檢測儀器是保障隧道行車安全的關(guān)鍵設(shè)備，它基于光電效應(yīng)原理，通過高精度傳感器實時監(jiān)測隧道外部環(huán)境照度，測量范圍可達0～7500cd/m2，精度0.1cd/m2。該儀器能動態(tài)調(diào)節(jié)隧道內(nèi)照明強度，消除“黑洞效應(yīng)"和“白洞效應(yīng)"，降低事故風(fēng)險，同時節(jié)能降耗。其具備IP68防護等級，適應(yīng)惡劣環(huán)境，支持遠程監(jiān)控與數(shù)據(jù)存儲，是隧道照明智能化的重要組成部分。

隧道外照度檢測儀器能滿足整個隧道照明控制的要求，預(yù)置控制模式的控制器根據(jù)光源測量值按預(yù)設(shè)參數(shù)自動進行切換照明開關(guān)，為隧道照明提供了最佳值。它的設(shè)計符合CIE關(guān)于隧道照明測量的要求，并能滿足《公路隧道通風(fēng)照明設(shè)計規(guī)范》，而且它的整體設(shè)計能滿足野外惡劣的工作環(huán)境地要求。

安裝方式：

隧道光強度監(jiān)測儀安裝在隧道內(nèi)指定區(qū)域的墻壁上，為了避免因事故或汽車殘骸對其的損傷，需安裝在4m左右的高度，距隧道入口大于10m的適當(dāng)位置。隧道光亮度監(jiān)測儀安裝在隧道外高度距路面4m左右，距隧道入口120—200m左右的適當(dāng)位置。具有高可靠性和低維護量.最新微處理器技術(shù)，數(shù)字化運行，安裝調(diào)試簡易。

The tunnel exterior illuminance detection instrument is a key device to ensure traffic safety in tunnels. It is based on the principle of the photoelectric effect and high-precision sensors to monitor the real-time illuminance of the tunnel's external environment. The measuring range can reach 0-7500cd/m2 with an accuracy of 0.1cd/m2. This instrument can dynamically adjust the illumination intensity inside the tunnel, eliminate the "black hole effect" and "white hole", reduce accident risk, and save energy and reduce consumption. It has an IP68 protection grade, adapts to harsh environments, supports remote monitoring and data storage, and an important part of the intelligentization of tunnel lighting.