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Do you really know about smart home?
Why do different smart home devices in our home work in the same environment because there is Wi-Fi? If there is no Wi-Fi outside, why can you still see the situation at home? Why do some smart home products use Siri to control? During the interview with the smart home business, I heard the name of an agreement: Zigbee, what is Zigbee, and what it is used for, why should we understand it? Today we will take a look at several standards of smart home technology.
Z-wave, Zigbee, Allseen, Thread Four Smart Home Technology Standards
The smart home technology standards we know are also the most familiar to us. They are Wi-Fi and Bluetooth. But in fact, in addition to Wi-Fi and Bluetooth, there are two smart home technology standards that are currently used, one is Z-wave and the other is Zigbee. Let's first meet one by one.
1. Z-wave: Short-range wireless communication technology According to the definition of Baidu Encyclopedia, Z-Wave is a wireless networking specification dominated by Danish company Zensys. It is an emerging radio frequency-based, low-cost, low-power, high-reliability, short-range wireless communication technology suitable for networks.
Since it is a short-range wireless communication technology, it should be suitable for home. Therefore, it is used in residential, lighting commercial control and status reading applications such as meter reading, lighting and home appliance control, HVAC, access control, anti-theft and fire detection.
In addition, it can convert any independent device into an intelligent network device, enabling control and wireless monitoring. Therefore, when it was originally designed, it was positioned in the field of smart home wireless control. In other words, it is for wireless control of smart homes.
As for how it achieves technical control, let's take a small example and you will understand. The three-bedroom, one-bedroom home has three lighting control switches, three wall switches, a remote control, and a touch control screen. All devices are guaranteed to be connected, so you can see the switch status of all Z-Wave appliances in your home through the remote control and touch control screen, and you can easily control them.
2. Zigbee: The wireless network protocol for low-speed and short-distance transmission is also based on the definition of Baidu Encyclopedia. ZigBee is a low-power LAN protocol based on the IEEE 802.15.4 standard. "Bee" is the meaning of a bee, and "zig" is the "click" sound of a bee waving its wings. Therefore, it is also called the Zigbee protocol. Bees rely on this way to form a communication network in the group.
ZigBee is characterized by close range, low complexity, self-organization, low power consumption, and low data rate. It is mainly suitable for the field of automatic control and remote control and can be embedded in various devices. In other words, it is a wireless network protocol for low-speed short-distance transmission.
ZigBee is also suitable for smart home applications. When I interviewed Nanoleaf smart light bulbs, Chong.Zhang, marketing director of Nanoleaf China, told me that Nanoleaf communicates using the ZigBee communication protocol and light bulb lighting equipment. Therefore, using the Zigbee protocol can achieve intelligent device communication.
As for Z-wave and Zigbee, which is better, it is said on the Internet that Z-Wave aims at home automation applications at the beginning of its establishment, while ZigBee pursues a wider range of applications. Therefore, the original guiding principles of the two are not the same. They also have their own advantages and disadvantages. As for the choice of which technology to use as the basis for its own products, it is up to the company itself to decide.
3. Allseen: The IoT Alliance talks about Allseen. It should be the Allseen Alliance. An IoT alliance made up of Linux Foundation, Qualcomm, LG, Sharp, Haier, Panasonic, HTC, Silicon Image, TP-Link, Cisco and others.
The AllSeen Alliance's original framework was derived from the AllJoyn open source project, which was mainly driven by the Qualcomm Innovation Center. It later involved processor vendors, network infrastructure vendors, router vendors, and home terminal vendors. Enterprises joining the alliance hope to be able to communicate with each other.
In September 2014, AllSeen Alliance Chairman LiatBen-Zur reported on the work of the AllSeen Alliance on his blog: He has already had nine important members and 42 community members; eight member-led working groups are actively Work to deliver better code, implement additional features and improvements such as security and lighting; two versions of AllJoyn have been released, including the SDK; AllJoyn projects can be extended to all HLOS platforms, from Android to IOS to Linux, Open WRT, Windows and even embedded RTOS solutions with extremely limited memory and processing power.
It can be seen from the work process that the Allseen Alliance is trying to bring an open platform to everyone, at least within the members, to make the code open, so that the products between members can be integrated into the technical standards.
4. Thread: Following Google’s acquisition of Nest by Google, led by Nest, members include ARM, Silicon Labs, Freescale, and Samsung’s Thread Group, which announced the 1.0 version of the Thread specification. Thread is actually a league standard for another group of companies. At the time of publication, everyone believed that "the standards of the Internet of Things will be unified."
Why do you say that? Because Thread has several advantages:
1. Advantages of the Thread protocol: IPv6 support through 6Lo WPAN technology improves the disadvantage that Bluetooth does not support IPv6 and ZigBee wiring is complex.
2. Openness of Thread: Thread focuses on the design of a networking layer that allows a wide range of Internet of Things solutions to interoperate, while also seeking broader opportunities for collaboration.
3, Thread Group's appeal and influence: From the initial 7 to the current more than 160, even Qualcomm also joined the board.
Of course, for Thread, there is obviously a mark of Google, which means that like Android, it also represents a standard of attributes. Because there are windows and IOS systems, whether they are willing to enter the system, apparently have not seen any signs.
Why should we understand the smart home technology standards?
Write here, many people in the home industry have to ask, what are these technical standards related to us? Why should we understand the technical standards of smart home? This does not seem to bring any benefit to our products.
1. Internet of Things needs technical standards support First of all, we need to make it clear that if we want to achieve smart home, we need to connect objects and things like to go out, time the rice cooker, the door is automatically opened, the lights automatically open The rice is also cooked. There is a connection between these different devices. As long as the connection is achieved, there needs to be a technical standard to support it. Whether it is Z-wave, Zigbee, or Allseen and Thread, all need a standard to implement.
2, with the technical standards to ensure the stability of smart home systems without this unified standard, then smart home systems want to achieve complete stability is more difficult. Just like now, if we buy products with different technical standards, we will find that it is not easy to use when it is used. This is the problem. Of course, if we can achieve complete unification, it will obviously be more conducive to our use environment.
3. Our smart products do not exist in isolation. It also requires this technical standard. Some people may ask, What is the relevance of our smart home products with these technologies? Do our smart sofas and smart toilets still need this technical standard? If you want users to control smart sofas and smart toilets from one device, you really need this technical standard. In other words, we do not think that our product is just a single product, as long as the user manually use it, as long as the entire system in the smart home, our products are not isolated.
What do we need to do?
It is clear that we also need technical standards, then what we need to do:
1. Decide what kind of technical standards you want to use for your product When developing smart home products, you need to consider which technology standards to use for your product. Some use Z-wave, some use Zigbee, or use Thread in the future. Currently, smart home products manufactured using these technical standards are mainly focused on lighting, control systems, and smart single products. The actual use of traditional household items has not yet been seen. This also shows that our traditional household items have been developed. may. When we need to make a smart home ourselves, we may want to think about which technical standards are more suitable for ourselves.
2. Keeping Focus on New Technology Standards In addition, we also need to maintain our focus on new technology standards. Perhaps we have not used technical standards yet, but it does not mean that we will not use the products we have developed in the future. Therefore, we need to maintain our focus on new technology standards. Perhaps in the near future, the standards of the Internet of Things will be truly unified, so we will use our unified standards to build our own products.
Do you really know about smart home?
The Internet is full of characters related to smart homes. Do you really understand it? In simple terms, smart homes use residential wiring as a platform to integrate home-life-related facilities using integrated wiring technology, network communication technology, security technology, automatic control technology, and audio-video technology to build efficient residential facilities and family schedule affairs. The management system enhances home safety, convenience, comfort, and artistry, and realizes an environmentally friendly and energy-saving living environment. It can operate interactively according to different conditions without the need for user command.