莱分享- WiFi、Zigbee、蓝牙，三大无线技术不同场景该怎么选？

说到无线智能调光，最常见方式一定少不了Zigbee、蓝牙和Wifi。那你知道他们之间有何区别？什么场景用哪种方式更好吗？想了解，就跟小编一起看下去吧。

When it comes to the wireless intelligent dimming solutions, Zigbee, Bluetooth and Wifi are the most common options. Do you know the difference between them? How to use them under different scenes? Read the following text to get the answers!

老规矩，一张表格先来对三种无线方式进行各性能对比，再慢慢为大家分析

The comparison between the performance of three wireless solutions

Zigbee

低速率、低功耗、低成本，大领域使用。

Zigbee - low speed, low power consumption, low cost, generally for large area

ZigBee是国际通行的双向无线通讯技术，它的每个网络端口理论上最多可以接入6.5万多个端口，主要用于短距离、低功耗且传输速率不高的各种电子设备之间进行数据传输, 可嵌入各种设备，被家居、工业、农业、教育、医疗等多领域选用，是目前使用最成熟的无线技术，以亚马逊Echo为代表，占据了国外无线技术主要市场

Zigbee is internationally accepted two-way wireless communication technology. Basically, each of its network port can access more than 65000 ports. It is mainly used for data transmission of various electronic devices that have short distance, low power consumption and low transmission rate, and it can be embedded in a multitude of devices. It is applied in household, industry, agriculture, education, medical and many other fields. Currently, it is the most mature wireless technology to be used and occupies the main market of foreign wireless technology. Amazon Echo is a remarkable example.

蓝牙

低成本、手机直连，室内小空间使用。

Bluetooth - Low cost, direct smart-phone connection, generally for small area

蓝牙有点对点、广播和Mesh组网多种连接方式，以天猫精灵生态链为代表的蓝牙mesh，因大量消费电子产品尤其是手机中集成蓝牙的功能，让蓝牙能够提供多品牌更广泛的互通性技术，如蓝牙 mesh 网络中每个智能家居硬件都是可以相互连接、发送指令进行控制联动，是目前最接近万物物联特点的无线技术。

Bluetooth has many options for connection, including point-to-point, broadcast and Mesh networking. Bluetooth Mesh, represented by Tmall Genie ecological chain, is integrated into a large number of consumer electronic products, especially mobile phones, enabling Bluetooth to provide a wider range of interoperability technologies for multiple brands. For example, each intelligent home hardware in bluetooth Mesh network can be connected to each other and send instructions for control linkage, which is the wireless technology closest to the characteristics of the Internet of Things.

且近年蓝牙技术一直在高速发展，如最新BLE 5.0 Mesh组网：

传输速率最高2Mbps；

有效工作距离可达300米；

结合Wi-Fi可以实现精度小于1米的室内定位；

功耗更低，并兼容老的版本；

……

Moreover, Bluetooth technology has been developing rapidly in recent years, such as the latest BLE 5.0 Mesh networking:

Transmission rate up to 2Mbps;

Effective working distance up to 300 meters;

Combined with Wi-Fi, indoor positioning with accuracy (＜1m) can be achieved.

Lower power consumption and compatible with older versions

目前蓝牙调光产品是以智能家居领域为主，在小空间的室内商业照明也有不错的应用效果。

At present, Bluetooth dimming products are mainly used in the field of intelligent home, and also have good application effect in the small space indoor commercial lighting.

WIFI

传输速度快、效率高，数据大的单品设备使用。

Wifi - fast transmission speed, high efficiency, generally for the big data transmission of single-product device

现在Wi-Fi基本已是家家户户必备设备，其随时接入无线信号、移动性强、数据传输速度快、效率高等特性，让用户有着非常好的使用体验，但相应的缺点也十分明显——功耗高、可接入节点数量少、保密安全性不如前两者等问题都限制了Wifi技术在大领域中的应用，一般为需要大数据传输、可插电使用（免去Wifi功耗问题）的小数量智能设备使用，在照明调光控制上应用较少。

At present, Wi-Fi is basically an indispensable device for every family. With its features of instant access to wireless signals, strong mobility, fast data transmission speed and high efficiency, users can have an excellent experience. But the shortcomings are also very obvious - high power consumption, less accessible node number and relatively poor confidentiality and security, limiting Wifi technology to be applied in the large field. Normally, it is used by a small number of intelligent devices that can be plugged into electricity (eliminating the power consumption of Wifi) for large data transmission, seldom used in the illumination dimming control.

总结 Conclusion

①Zigbee目前有非常成熟的系统与应用领域，是无线里面最适用于低速传输，且需要连接大量控制节点的大型工业、农业、教育、家庭主网。

Currently, Zigbee has a very mature system and application field, which is the most suitable one for low-speed transmission in wireless and suitable to be applied as the main network in the large-scale industry, agriculture, education and home that have a large number of control nodes.

②蓝牙在三种方式中性能成本折中，正沿Zigbee早期发展道路逐步扩大占有率，目前其手机直连的优势在小空间家居、商业、办公等室内照明中有较大的优势。

Bluetooth (a compromise between Zigbee and Wifi in terms of performance and cost) is gradually expanding its market share along the early development path of Zigbee. At present, its feature of direct connection with smart phones has a great advantage in small space home, commercial, office and other indoor lighting.

③Wifi覆盖面广，传输速率大，建议使用于需要实时大数据传送提高使用体验的少量单品智能设备。

With its wide coverage and high transmission rate, it is recommended to be used for a small number of single-product intelligent devices that need real-time big data transmission to improve user experience.