什麼是物聯網（Internet of Things）？
物聯網（Internet of Things）是一個基於互聯網、傳統電信網等信息承載體，讓所有能夠被獨立尋址的普通物理對象實現互聯互通的網絡，也就是說可以將各種信息傳感設備，如射頻識別裝置、紅外感應器、全球定位系統、激光掃描器等種種裝置與互聯網結合起來而形成的一個巨大網絡。其目的是讓所有的物品都與網絡連接在一起，方便識別和管理。它具有普通對象設備化、自治終端互聯化和普適服務智能化3個重要特征。
物聯網（Internet of Things）指的是將無處不在（Ubiquitous）的末端設備（Devices）和設施（Facilities），包括具備“內在智能”的傳感器、移動終端、工業系統、樓控系統、家庭智能設施、視頻監控系統等和“外在使能”（Enabled）的，如貼上RFID的各種資產（Assets）、攜帶無線終端的個人與車輛等“智能化物件或動物”或“智能塵埃”（Mote），通過各種無線/有線的長距離/短距離通訊網絡實現互聯互通（M2M）、應用大集成（Grand Integration）、以及基於云計算的SaaS營運等模式，提供安全可控乃至個性化的實時在線監測、定位追溯、報警聯動、調度指揮、預案管理、遠程控制、安全防範、遠程維保、在線升級、統計報表、決策支持、 桌面（集中展示的Cockpit Dashboard）等管理和服務功能，實現對“萬物”的“高效、節能、安全、環保”的“管、控、營”一體化。
頻率的應用範圍 Application Range of Frequency
NFC: 13.56MHz，近距離無線通訊技術，由非接觸式射頻識別(RFID)演變而來，主要應用於金融支付、交通、廣告、圖書出版等市場;
NFC: 13.56MHz, short-range wireless communication technology, evolved from contactless radio frequency identification (RFID), mainly used in financial payment, transportation, advertising, book publishing and other markets;
FM: 國際頻段76-108MHz，中國為88-108MHz，日本為76-90MHz；事實上FM也是一種調製方式，即使在短波範圍內的27-30MHz之間，做為業餘電台、太空、人造衛星通訊應用的波段；
FM: International frequency band 76-108MHz, China 88-108MHz, Japan 76-90MHz; in fact, FM is also a modulation method, even can be 27-30MHz in the short-wave range, used as amateur radio, space, satellite bands for communication applications;
天線遙控： 315MHz(國內)，433MHz(國外)，868MHz具有通訊距離遠、覆蓋範圍廣的特點，主要應用於智能家居市場;
Antenna remote control: 315MHz (domestic), 433MHz (foreign), 868MHz has the characteristics of long communication distance and wide coverage, mainly used in the smart home market;
DVB： 460-870MHz，是數字電視頻段；
DVB: 460-870MHz, which is the digital TV frequency band;
Lora： 433/470-510/868/915MHz。LoRa技術具有遠距離、低功耗（電池壽命長）、多節點、低成本的特性。
Lora: 433/470-510/868/915MHz. LoRa technology has the characteristics of long distance, low power consumption (long battery life), multiple nodes, and low cost.
RFID: 又稱無線射頻識別，是一種通信技術，俗稱電子標籤。可通過無線電訊號識別特定目標並讀寫相關數據，而無需識別系統與特定目標之間建立機械或光學接觸。適用於短距離識別通信。
中國840-845/920-925MHz。臺灣922-928MHz。香港865-868/920-928MHz。歐洲865.6-867.6MHz。美國902-928MHz。日本952-954MHz。韓國908-910/910-914MHz加拿大，墨西哥902-928MHz。
RFID: Also known as radio frequency identification, it is a communication technology commonly known as electronic tags. Radio signals can be used to identify specific targets and read and write related data without the need to establish mechanical or optical contact between the identification system and the specific targets. Suitable for short-distance identification communication.
China 840-845/920-925MHz. Taiwan 922-928MHz. Hong Kong 865-868/920-928MHz. Europe 865.6-867.6MHz. United States 902-928MHz. Japan 952-954MHz. South Korea 908-910, Canada 910-914MHz, Mexico 902-928MHz.
NB-IOT： 窄帶物聯網（Narrow Band internet of Things，NB-IOT)是由3GPP（《第三代夥伴計劃協議》）標準化組織定義的一種技術標準，是一種專為物聯網設計的窄帶射頻技術，通常應用於智能停車場、智能抄表、物流追蹤器等等。
NB-IOT: Narrow Band Internet of Things (NB-IOT) is a technical standard defined by the 3GPP ("3rd Generation Partnership Project Agreement") standardization organization, and is a narrowband RF technology designed specifically for the Internet of Things，which is commonly used in smart parking lots, smart meter reading, logistics trackers, etc.
2G: 850/900/1800/1900MHz，第二代通信技術的簡稱，以數字語音傳輸技術為核心。
2G: 850/900/1800/1900MHz, the abbreviation of the second-generation communication technology, with digital voice transmission technology as the core.
藍牙： 2.4~2.485GHz，實現固定設備、移動設備和樓宇, 個人域網之間的短距離數據交換
Bluetooth: 2.4~2.485GHz, to realize short distance data exchange between fixed equipment, mobile equipment and building, wireless personal area network
WiFi：2.4G或5.8G；2.4G優點是抗衰減能力強，穿牆能力不錯，但干擾偏多，穩定性略差；5G優點是抗干擾能力強，吞吐率高，但穿牆能力差，信號衰減大
WiFi: 2.4G or 5.8G; the advantage of 2.4G is that it has strong anti-attenuation ability and good wall penetration ability, but the interference is too much and the stability is slightly poor; the advantage of 5G is that it has strong anti-interference ability and high throughput rate, but the wall penetration ability is poor, large signal attenuation
3G: 850/900/1800/1900/2100MHz，第三代通信技術的簡稱，支持高速數據傳輸。
3G: 850/900/1800/1900/2100MHz, short for third-generation communication technology, supports high-speed data transmission.
4G: 700-2700MHz，第四代通訊技術的簡稱，擁有的超高數據傳輸速度，是物聯網設備高速對話的基石。
4G: 700-2700MHz, the abbreviation of the fourth generation of communication technology, has an ultra-high data transmission speed, which is the cornerstone of high-speed dialogue of IoT devices.
5G: 3300-3600MHz和4800-5000MHz，5G網絡將是4G網絡的真正升級版，5G並不會完全替代4G、WiFi，而是將4G、WiFi等網絡融入其中，為用戶帶來更為豐富的體驗。
5G: 3300-3600MHz and 4800-5000MHz, 5G network will be a truly upgraded version of 4G network, it will not completely replace 4G / WiFi, but will integrate 4G, WiFi and other networks into it to bring users more abundant experience.
