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首頁(yè) > 技術(shù)文章 > 手持式光譜儀具備防水、防塵和抗震性能

手持式光譜儀具備防水、防塵和抗震性能

點(diǎn)擊次數(shù):313更新時(shí)間:2025-11-06
  手持式光譜儀是一種便攜式光學(xué)分析儀器,通過(guò)測(cè)量物質(zhì)對(duì)光的吸收、反射或發(fā)射特性來(lái)識(shí)別材料的成分與性質(zhì)。與傳統(tǒng)臺(tái)式光譜儀相比,有體積小、重量輕、操作簡(jiǎn)便、可現(xiàn)場(chǎng)檢測(cè)的特點(diǎn),廣泛應(yīng)用于食品安全檢測(cè)、環(huán)境監(jiān)測(cè)、醫(yī)藥分析、農(nóng)業(yè)生產(chǎn)及材料識(shí)別等領(lǐng)域。
 

 

  手持式光譜儀的工作原理:
  1.光源系統(tǒng)
  通常配備穩(wěn)定的光源,如LED、鹵素?zé)艋蚣す馄鳎a(chǎn)生特定波段的光照射樣品。光源的選擇決定了儀器的適用波長(zhǎng)范圍和測(cè)量精度。
  2.光學(xué)系統(tǒng)
  光學(xué)系統(tǒng)用于引導(dǎo)光束與樣品作用,并將樣品反射或透射的光收集到檢測(cè)器。通常包括準(zhǔn)直器、光柵或棱鏡等元件,用于分光和聚光。光學(xué)系統(tǒng)的設(shè)計(jì)決定了光譜分辨率和信噪比。
  3.探測(cè)器
  探測(cè)器負(fù)責(zé)將光信號(hào)轉(zhuǎn)換為電信號(hào),常用的有CCD(電荷耦合器件)、CMOS和InGaAs(用于近紅外波段)等。探測(cè)器的靈敏度和響應(yīng)速度直接影響測(cè)量的精度和速度。
  4.數(shù)據(jù)處理與分析
  探測(cè)器采集的信號(hào)經(jīng)過(guò)模數(shù)轉(zhuǎn)換后,通過(guò)內(nèi)置微處理器或移動(dòng)終端進(jìn)行數(shù)據(jù)處理,包括光譜校正、噪聲濾除和譜圖分析。結(jié)合化學(xué)計(jì)量學(xué)模型和機(jī)器學(xué)習(xí)算法,可實(shí)現(xiàn)快速的物質(zhì)識(shí)別和含量測(cè)定。
  結(jié)構(gòu)特點(diǎn):
  1.便攜性強(qiáng)
  儀器一般重量在幾百克至兩公斤之間,方便手持或掛在腰間操作,適合野外和現(xiàn)場(chǎng)檢測(cè)。
  2.一體化設(shè)計(jì)
  通常將光源、光學(xué)元件、探測(cè)器及數(shù)據(jù)處理單元集成在一臺(tái)儀器中,有些產(chǎn)品還帶有觸摸屏顯示和無(wú)線數(shù)據(jù)傳輸功能,實(shí)現(xiàn)現(xiàn)場(chǎng)測(cè)量和即時(shí)分析。
  3.低功耗與長(zhǎng)續(xù)航
  為適應(yīng)移動(dòng)應(yīng)用,采用低功耗設(shè)計(jì)和可充電電池,通常可連續(xù)工作數(shù)小時(shí)至十余小時(shí),適合長(zhǎng)時(shí)間野外使用。
  4.防護(hù)性能
  具備防水、防塵和抗震性能,適應(yīng)復(fù)雜環(huán)境下的測(cè)量需求。
  手持式光譜儀的應(yīng)用領(lǐng)域:
  1.食品安全檢測(cè)
  可快速分析食品中的成分和質(zhì)量,如蛋白質(zhì)、糖分、脂肪含量,以及檢測(cè)農(nóng)藥殘留和非法添加劑。例如,水果、糧食和乳制品等可通過(guò)近紅外光譜實(shí)現(xiàn)快速質(zhì)量分級(jí)。
  2.環(huán)境監(jiān)測(cè)
  儀器可用于水質(zhì)、空氣和土壤的現(xiàn)場(chǎng)檢測(cè),如測(cè)量水中溶解氧、污染物濃度或土壤濕度和有機(jī)質(zhì)含量。手持式設(shè)計(jì)使環(huán)境檢測(cè)更加靈活和高效。
  3.農(nóng)業(yè)生產(chǎn)
  在農(nóng)業(yè)領(lǐng)域,可監(jiān)測(cè)作物生長(zhǎng)狀態(tài)、葉綠素含量、病蟲(chóng)害狀況及土壤養(yǎng)分,為精準(zhǔn)農(nóng)業(yè)提供科學(xué)依據(jù),提高產(chǎn)量和質(zhì)量。
  4.醫(yī)藥和健康檢測(cè)
  手持式拉曼光譜儀可實(shí)現(xiàn)藥品鑒別、防偽和質(zhì)量控制,也可用于血液、尿液和組織樣品的現(xiàn)場(chǎng)快速分析,提高診斷效率。
  5.材料識(shí)別與工業(yè)檢測(cè)
  在工業(yè)領(lǐng)域,可用于金屬、塑料、復(fù)合材料的成分鑒定及質(zhì)量檢測(cè),方便現(xiàn)場(chǎng)快速篩選和分級(jí)。
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