Science and technology dynamic smart home is a prominent feature - Internet of things. Connecting a home-use device for control requires a set of communication systems between objects and objects. The smart home communication system is mainly divided into two categories: wired communication and wireless communication.
Bluetooth Configuration Standard Releases Strong Candidates for Smart Home Wireless Standard Competition
Which wireless standard will eventually dominate the smart home? This has not yet been settled. However, after recent upgrades, Bluetooth has become a potential candidate for this competition.
The Bluetooth technology alliance recently released the configuration standard for Bluetooth Mesh. If you understand mesh networks, Bluetooth Mesh works basically like this: It allows low-power Bluetooth devices to create a mesh network and work in a similar fashion.
If you do not understand the mesh network, then you can understand this: Most wireless communications are carried out directly between two points, such as from a router to a laptop (and vice versa). If the distance between the notebook and the router is too far away, communication may not be established.
But mesh networks have a practical technique for extending the range of data transmission: letting communications bouncing between devices. If the signal fails to arrive at its destination on the first attempt, another device in the network will retransmit the information, hoping to try to establish contact with the target device by extending the signal range. This behavior can be repeatedly performed until the information is finally communicated.
For smart home technology, this kind of work is particularly useful because it allows two smart home devices that are very far away to communicate information to each other. For example, when you get home from work, the garage door switch can send a message to turn on the lights in the bedroom upstairs, and this information can jump between the smart light bulbs to reach the light bulb that is furthest away.
The importance of mesh networks is that many smart home devices have very low power consumption. A device placed on one side of the home wants to send a high speed signal to a device on the other side requires a lot of energy, but the mesh device only needs to transmit a low power signal because the signal can be transferred and repeated between devices. For devices that use batteries, this is important for saving power and extending battery life.
It is reported that in the future there will be a variety of different devices supporting Bluetooth Mesh. However, the latter does not require all devices in the network to re-broadcast signals, thereby further saving power. In some cases, ultra-low-power devices only wake up every few hours to ping a "buddy" device (such as a temperature sensor versus a thermostat) to obtain information that may exist, such as the temperature range it should track. In addition, the Bluetooth Mesh standard requires all communications to be encrypted.
Unfortunately, it is still unknown whether existing Bluetooth devices can support these features. Bluetooth Mesh can be added to any device that supports Bluetooth 4.0 or 5.0, which means that it does not require new hardware, so a large number of devices can get support. But whether the existing equipment can support the standard, it also depends on whether the company will release the upgrade.
The Bluetooth SIG said that the new Bluetooth standard will generally enter the market within half a year of its release, but the time required by Bluetooth Mesh may be shorter because it does not require new hardware. In other words, the next Bluetooth device you purchase will most likely support Bluetooth Mesh, but it's hard to say if your existing device supports it.
Even without support, the Bluetooth SIG is preparing a solution. It is reported that they will allow some Bluetooth Mesh devices to be used as "relays" to connect other Bluetooth products and to control devices in the network. In this way, the phone can connect to relay devices to issue commands to other devices.
Although these changes will allow Bluetooth to better serve smart home devices, this does not mean that standard wars in this area will end in a short time. First, only after enough devices are available can this standard become practical enough. Later, we have to observe the actual work of the Bluetooth Mesh - although Bluetooth has been upgraded and optimized in recent years, but it has been the stability and connectivity problems in the past.
In addition, the Bluetooth standard is not suitable for all uses. It does not intend to replace Wi-Fi on high-speed connections, so some devices should continue to support the latter. Other devices that rely on mesh network standards (such as ZigBee) are currently in use (such as Philips Hue), although their name recognition and compatibility are much lower. At the same time, the Wi-Fi Alliance is also developing a low-power standard to compete with Bluetooth, which means that competition will continue.
Despite the efforts of these standards groups, it is unlikely that there will be only one wireless standard in the smart home area. However, after the mesh network function is added, Bluetooth will become a better choice for smart home devices. With its own name recognition and higher popularity, Bluetooth is likely to squeeze out other mesh network standards that are already in use.
(Original title Bluetooth Mesh configuration standards issued specifically for the smart home service author: Jacob Kastrenakes, the compiler: Eskimo)
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Single point load cells will offer high accuracy and high reliability, they are also known as [platform load cells" as this is their most common application. They are typically used in low capacity compact weighing systems.
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