午夜福利无遮挡十八禁视频_四虎精品寂寞少妇在线观看_亚洲色在线无码国产精品不卡_开心激情网五月天_黄色生活毛片_五月丁香啪啪_茄子在线看片免费人成视频_日韩免费一级_久久久久久久久久久99_国产精选毛片_久久国产精品影视_国产99在线 | 亚洲_亚洲色大成永久ww网站_亚洲午夜久久久无码精品网红a片_国产女性无套_伊人超碰_亚洲女人毛片_国产精品天天看_久久人人爽人人爽av片_狠狠婷婷

南京凱基特電氣有限公司主要生產(chǎn)銷售壓力變送器、稱重傳感器、拉壓力傳感器、扭矩傳感器、測(cè)力傳感器系列產(chǎn)品!
全國(guó)服務(wù)熱線
025-66098387
稱重傳感器技術(shù)知識(shí)
SHT40溫濕度傳感器,精密環(huán)境監(jiān)測(cè)的物聯(lián)網(wǎng)新標(biāo)桿
時(shí)間: 2021-10-10 23:19:15 瀏覽次數(shù):0

在萬物智聯(lián)的時(shí)代,環(huán)境數(shù)據(jù)的精準(zhǔn)感知已成為智能設(shè)備的核心競(jìng)爭(zhēng)力。無論是恒濕恒溫的精密實(shí)驗(yàn)室,還是24小時(shí)運(yùn)行的智慧農(nóng)業(yè)大棚,亦或是高效節(jié)能的智能家居系統(tǒng),溫濕度數(shù)據(jù)的毫厘之差,都直接影響著設(shè)備效能、能源消耗與用戶體驗(yàn)。如何以最小尺寸、最低功耗,實(shí)現(xiàn)最高精度的環(huán)境感知? 全球知名傳感器制造商Sensirion推出的第四代旗艦產(chǎn)品——SHT40溫濕度一體傳感器,正以突破性的性能指標(biāo)給出答案,成為工業(yè)級(jí)與消費(fèi)級(jí)應(yīng)用的新標(biāo)桿。

技術(shù)進(jìn)化:SHT40的“硬核”實(shí)力解析

作為SHT3x系列的“升級(jí)版”,SHT40并非簡(jiǎn)單迭代,而是在精度、功耗、穩(wěn)定性三大維度實(shí)現(xiàn)了全面進(jìn)化,詮釋了“溫濕度一體傳感器”的技術(shù)巔峰:

  1. 精度躍升:±1.8% RH / ±0.2°C的測(cè)量水平 濕度測(cè)量精度達(dá)到±1.8% RH,溫度精度±0.2°C(-10°C至+60°C范圍內(nèi))。這意味著在人體最敏感的舒適區(qū)間(如濕度50%RH附近),其誤差范圍極小,對(duì)于需要精密環(huán)境控制的場(chǎng)景(如制藥、博物館、數(shù)據(jù)中心)具有核心價(jià)值。其濕度響應(yīng)時(shí)間更是縮短至驚人的6秒(τ63%),大幅提升動(dòng)態(tài)監(jiān)測(cè)響應(yīng)速度。

  2. 功耗新低:休眠電流僅0.08 μA超低功耗設(shè)計(jì)上,SHT40堪稱革新。其單次測(cè)量功耗僅0.4μJ(每秒測(cè)量1次時(shí)平均功耗約5.4μW),休眠模式電流低至0.08μA。這對(duì)依賴電池供電的物聯(lián)網(wǎng)節(jié)點(diǎn)(如無線傳感器、可穿戴設(shè)備)至關(guān)重要,可將系統(tǒng)續(xù)航能力提升數(shù)倍甚至數(shù)十倍。

  3. 雙加熱器設(shè)計(jì):抗凝露與自清潔 創(chuàng)新性地集成了兩個(gè)獨(dú)立加熱器

  • 一級(jí)加熱器 (Heater 1):提供溫和加熱(約0.6°C溫升),有效防止傳感器在高濕環(huán)境結(jié)露,確保冷啟動(dòng)或環(huán)境驟變時(shí)的數(shù)據(jù)可靠性。
  • 二級(jí)加熱器 (Heater 2):提供強(qiáng)加熱(約1.8°C溫升),可用于驅(qū)散化學(xué)污染物、恢復(fù)傳感器性能或加速去濕過程,顯著提升傳感器在惡劣環(huán)境下的長(zhǎng)期穩(wěn)定性與使用壽命
  1. 微型封裝與工業(yè)級(jí)可靠性 延續(xù)Sensirion經(jīng)典的DFN封裝(尺寸僅1.5×1.5×0.5 mm3),體積微小卻堅(jiān)韌可靠。符合JEDEC JESD47標(biāo)準(zhǔn),具備優(yōu)異的長(zhǎng)期穩(wěn)定性與抗老化能力,完全滿足工業(yè)自動(dòng)化、戶外設(shè)備等嚴(yán)苛場(chǎng)景需求。

應(yīng)用場(chǎng)景:SHT40如何重構(gòu)環(huán)境感知邊界?

憑借其高精度、低功耗、小體積、強(qiáng)可靠性的完美組合,SHT40正在以下領(lǐng)域大放異彩:

  • 智慧樓宇與HVAC系統(tǒng):實(shí)時(shí)精準(zhǔn)調(diào)控空調(diào)、加濕器、新風(fēng)系統(tǒng),優(yōu)化舒適度,降低能耗(精確到±1.8%RH的濕度控制可顯著減少過度加濕/除濕浪費(fèi))。
  • 工業(yè)自動(dòng)化與過程控制:在精密制造、潔凈車間、倉(cāng)儲(chǔ)物流中,提供關(guān)鍵環(huán)境參數(shù)保障,確保產(chǎn)品質(zhì)量與工藝穩(wěn)定性。
  • 農(nóng)業(yè)物聯(lián)網(wǎng)與環(huán)境監(jiān)測(cè):部署于溫室、農(nóng)田、養(yǎng)殖場(chǎng),實(shí)現(xiàn)土壤墑情聯(lián)動(dòng)分析、病蟲害預(yù)警、大棚環(huán)境精細(xì)管理。
  • 消費(fèi)電子與智能家居:融入智能溫控器、空氣凈化器、加濕器、高端家電甚至可穿戴設(shè)備,提升智能化與用戶體驗(yàn)。
  • 冷鏈物流與醫(yī)藥運(yùn)輸:監(jiān)測(cè)運(yùn)輸箱/車內(nèi)溫濕度變化,保障疫苗、生鮮、特殊藥品的安全性。
  • 氣象站與便攜式設(shè)備:其低功耗特性非常適合太陽能供電或電池供電的戶外監(jiān)測(cè)設(shè)備。

“一體設(shè)計(jì)”的優(yōu)勢(shì)在此彰顯: SHT40將溫度與濕度測(cè)量高度集成于單一芯片,消除了分立傳感器存在的空間沖突、布線復(fù)雜、標(biāo)定誤差等問題,簡(jiǎn)化了系統(tǒng)設(shè)計(jì),提升了整體數(shù)據(jù)的時(shí)空一致性。

與前代對(duì)比:為何SHT40是更優(yōu)解?

特性 SHT30 SHT35 SHT40
濕度精度 (±%RH) ±2.0 (典型) ±1.5 (典型) ±1.8 (最大值)
溫度精度 (±°C) ±0.2 (典型) ±0.1 (典型) ±0.2 (最大值)
功耗 (單次平均) ~4.8μW (@1Hz) ~4.8μW (@1Hz) ~5.4μW (@1Hz)
休眠電流 ~0.15μA ~0.15μA <0.08μA
特殊功能 單加熱器 單加熱器 雙獨(dú)立加熱器
關(guān)鍵升級(jí) 基礎(chǔ)版 高精度版 精度/功耗/功能綜合優(yōu)化
  • 對(duì)比SHT30: SHT40在精度(尤其濕度)、功耗、加熱器功能上全面勝出,成本相近下提供了更高價(jià)值。
  • 對(duì)比SHT35: SHT35在溫度精度上仍有微弱優(yōu)勢(shì),但SHT40在濕度精度最大值指標(biāo)上更優(yōu),且擁有顯著更低的功耗和革命性的雙加熱器設(shè)計(jì)。對(duì)于大多數(shù)注重平衡性、能效和長(zhǎng)期可靠性的應(yīng)用,SHT40提供了更完美的解決方案。

如何集成:開發(fā)者生態(tài)友好

SHT40延續(xù)了Sensirion一貫的易用性:

  • 標(biāo)準(zhǔn)I2C接口:通信協(xié)議清晰簡(jiǎn)潔,時(shí)鐘頻率最高可達(dá)1 MHz,便于快速接入各類MCU平臺(tái)(Arduino、樹莓派、ESP32/ESP8266等)。
  • 電壓范圍寬 (1.08V - 3.6V):兼容主流的1.8V、3.3V邏輯系統(tǒng),降低電源設(shè)計(jì)復(fù)雜度。
  • 完善的開源支持與資料庫(kù):Sensirion官網(wǎng)提供詳盡的Datasheet、應(yīng)用筆記、評(píng)估板(EVB)以及豐富的軟件驅(qū)動(dòng)(C, Python等),極大加速產(chǎn)品開發(fā)周期。

在環(huán)境監(jiān)測(cè)需求日益精細(xì)化、設(shè)備日趨微型化與節(jié)能化的今天,Sensirion SHT40溫濕度一體傳感器以其卓越的綜合性能樹立了新標(biāo)準(zhǔn)。它不僅僅是數(shù)據(jù)的采集者,更是構(gòu)建智能、高效、可靠系統(tǒng)的基石。無論是追求極致精度的工業(yè)工程師,還是關(guān)注電池壽命的IoT開發(fā)者,或是打造舒適智能家居的創(chuàng)造者,SHT40都提供了當(dāng)前市面上最具競(jìng)爭(zhēng)力的溫濕度感知方案。

南京凱基特電氣有限公司

Copyright ? 南京凱基特電氣有限公司 版權(quán)所有 蘇ICP備12080292號(hào)-5
全國(guó)服務(wù)電話:025-66098387傳真:025-87168200
公司地址:江蘇省南京市江寧區(qū)科寧路777號(hào)申智滙谷9棟101

電話
服務(wù)電話:
025-66075066
微信

微信公眾號(hào)

主站蜘蛛池模板: | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |