Estimote Beacons：設定、配置與應用場景全方位指南

藍牙低功耗 (BLE)

藍牙無線標準的一種高效能省電變體，專為物聯網（IoT）裝置設計，用於在短距離內傳輸少量數據。其低功耗特性使 Beacon 能夠依靠小電池運行數年。

IT 團隊將會接觸到 BLE，將其作為所有現代 Beacon 的基礎通訊技術。了解其傳輸範圍和功耗特性對於設計永續的部署至關重要。

iBeacon

Apple 用於 BLE 廣告的協定。它圍繞三層識別碼來建構 Beacon 的廣播：UUID、Major 和 Minor。它是 iOS 裝置上最廣泛支援的室內導航協定。

對於任何面向公眾的場域，這是不可或缺、必須支援的標準。如果您想為 iPhone 使用者提供導航，您的 Beacon 就必須廣播 iBeacon 封包。

Eddystone

Google 的 iBeacon 開源替代方案。它更具彈性，具有多種訊框類型，包括使用臨時（短期）識別碼來增強安全性和隱私保護的 Eddystone-EID。

對於關注安全性或希望避免受限於特定廠商的企業部署，Eddystone 提供了一個強大且靈活的選擇。Eddystone-EID 是降低追蹤和欺騙風險的關鍵功能。

UUID (Universally Unique Identifier)

用於識別電腦系統中資訊的 128 位元數字。在 iBeacon 的語境中，它作為組織或特定應用程式的最上層識別碼。

UUID 可作為您 Beacon 部署的唯一命名空間。您組織中的所有 Beacon 應設定相同的 UUID，以確保您的應用程式不會對附近其他商家的 Beacon 做出回應。

廣告間隔 (Advertising Interval)

Beacon 廣播其廣告封包的頻率。較短的間隔（例如 100 毫秒）會帶來更即時的位置更新，但會消耗更多電池電量。較長的間隔（例如 1000 毫秒）可節省電池電量，但反應可能會顯得遲緩。

這是網路架構師必須平衡的關鍵折衷。對於主動導航，300 - 500 毫秒是最佳平衡點。對於被動資產追蹤，間隔可以長得多。

發射功率 (Tx Power)

信標廣播的訊號強度，以 dBm 為單位測量。此設定直接控制信標的範圍。較高的 Tx Power（例如 +4dBm）表示範圍較遠，而較低的 Tx Power（例如 -20dBm）表示範圍較近。

這是調整信標網路的主要工具。正確設定 Tx Power 是防止訊號溢漏並確保精確定位的關鍵。在許多情況下，這比物理信標密度更重要。

訊號溢漏

在非預期區域偵測到信標訊號的現象，最常見於其實際位置的上方或下方樓層。這是導航應用程式中樓層偵測不準確的主要原因。

IT 團隊必須主動針對訊號溢漏進行設計，特別是在具有中庭或薄地板的建築物中。主要的緩解策略是降低有問題區域中信標的傳輸功率。

Ultra-Wideband (UWB)

一種短距離無線電技術，可以非常高精度地測量位置（精確到幾公分）。它的工作原理是測量標籤與多個錨點之間無線電訊號的飛行時間。

當 IT 團隊的任務是需要「英吋級」或「亞米級」精確度的使用案例時（例如製造業中的工具追蹤或碰撞預防），BLE 是不夠的。UWB 是滿足這些高精度要求的合適技術。

What is the difference between Estimote Proximity and Estimote Location beacons?

Estimote Proximity beacons use the Nordic nRF52832 SoC, run on a CR2477 coin cell (1,000 mAh), and provide up to 70 meters line-of-sight range. They are engineered for entrance detection, retail zone triggers, and point-of-interest notifications. Estimote Location beacons incorporate the Nordic nRF52840 chipset with long-range BLE 5.0 PHY support, an integrated 2,400 mAh Li-MnO2 primary battery pack, motion and ambient light sensors, and high-frequency packet broadcasting up to 200 meters. Location beacons deliver the dense, multi-packet signal grid necessary for real-time trilateration, blue-dot wayfinding, and indoor positioning systems (IPS).

How do you calibrate RSSI at 1 meter (Measured Power) for accurate distance estimation?

Measured Power (also known as RSSI at 1 meter) represents the expected received signal strength when a scanning mobile device or gateway is placed exactly 1 meter away from the transmitting beacon. To calibrate this value, position a smartphone or spectrum analyzer at 1 meter elevation and 1 meter line-of-sight distance with zero physical obstructions. Record at least 100 RSSI observations over 30 seconds and calculate the average or median value (typically between -59 dBm and -68 dBm depending on Tx power). Enter this calibrated constant into your beacon configuration profile so log-distance path loss algorithms can convert measured RSSI into precise meter-scale distances.

What advertising interval and transmission power should be used for indoor wayfinding versus asset tracking?

For indoor wayfinding and blue-dot navigation, set an advertising interval of 100 ms to 350 ms and a transmission power between -12 dBm and -4 dBm. This ensures mobile devices receive 3 to 10 packets per second to update positioning vectors smoothly without lag while minimizing signal bleed through floors. For fixed asset tracking or pallet monitoring, extend the advertising interval to 1,000 ms to 2,000 ms and enable Estimote Smart Power or motion-only sleep modes. This configuration cuts battery consumption by up to 75% while maintaining accurate room-level presence updates.

How do Estimote beacons coexist with 2.4 GHz enterprise WiFi networks?

Bluetooth Low Energy operates in the 2.4 GHz ISM band across 40 channels spaced 2 MHz apart. BLE advertising channels 37 (2402 MHz), 38 (2426 MHz), and 39 (2480 MHz) were specifically engineered to avoid interference with standard non-overlapping 20 MHz WiFi channels 1, 6, and 11. Channel 37 sits below WiFi channel 1, channel 38 sits in the spectral guard band between channels 1 and 6, and channel 39 sits above WiFi channel 11. Because BLE transmissions are narrow-band (1 MHz or 2 MHz) and brief (less than 3 ms per packet), BLE beacon deployments coexist cleanly alongside high-density enterprise WiFi without degrading WLAN throughput.

How does Purple integrate with Estimote BLE beacons and enterprise WiFi access points?

Purple combines Estimote BLE beacon broadcasting with existing enterprise WiFi infrastructure from Cisco Meraki, HPE Aruba, and Ruckus. While access points provide broad venue presence and visitor footfall analytics through WiFi probes and captive portal authentication, Estimote BLE beacons provide roughly 1 to 3 metre accuracy (RSSI-based BLE positioning) for indoor wayfinding, asset tracking, and micro-location triggers. Purple ingests beacon telemetry through AP scanning radios and mobile SDKs, displaying unified venue heatmaps, dwell times, and multi-floor path analytics in a single management dashboard across 80,000+ venues worldwide.