Smart Homes - The Future is Here

September 20, 2018 at 10:00 AM

 

Long ago, the idea of a home having the technology to be interactive was only a possibility in a Hollywood production or sci-fi novel. But those days are gone, the future is here and smart homes have moved from the realm of fantasy to an endless world of possibility. With the development of the Internet of Things (IoT), the world in general is becoming smarter and safer, and that includes our homes. Here, we’ll take a look at the technology behind the innovation bringing technological magic to your home.

 

First, what is a smart home? A smart home is automated, much in the way your coffee pot or your air conditioner are automated to turn on at a certain time or temperature. But a smart home takes that one step further by connecting all of those automated devices in your home through a wireless network, they are then able to be monitoring and programmed from one device. It is that communication with the devices that makes it smart. The devices in a smart home all rely on connectors and sensors to transmit and relay signals. Most wireless home automation uses low-power equipment so that power supply is not an issue.

 

To connect all of these devices, a combination of long and short-range wireless communication protocols is used, such as Wi-Fi, Bluetooth, ANT and ZigBee. With this technology, along with smartphones and tablets, we are now able to connect a multitude of devices within the home, this includes TVs, heating and cooling systems, lighting, appliances, security systems and cameras, or anything else that can be connected to the network. Plus, the communication to these devices is not distance limited, meaning you can control or change your thermostat while you’re at work or traveling using WAN connectivity via a router. Many new homes are being constructed with this technology built-in, older homes can be retrofitted with smart technologies and there are devices from companies like Google and Amazon that will connect to many electronics within your home.

 

Why would someone want a smart home? For one, it can make life a lot easier. Being able to control the devices within your home from your smartphone is super convenient. There is also an additional level of safety added when you’re able to monitor your home through a connected security network. Video cameras can provide surveillance in and around the home, with smart locks you can allow repairmen into your home and you are able to monitor when children get home from school. For people with disabilities or limited movement, smart homes that allow them to manage the home environment from a single, mobile device can make life much easier. In addition to safety, smart homes can be very energy efficient, which is good for the environment. Being able to control the thermostat remotely and turn lights and appliances on or off can be a great way to save energy.

 

With the growth of the IoT and more things becoming connected, it is no wonder that this would apply to our homes as well. Not only do smart homes provide convenience, they can also be good for the environment and give assistance to the disabled. Lucky for us, we no longer have to wait for the home of the future, the future is now. 

 

Short Range Communications: A to Z

July 12, 2018 at 8:00 AM

 

These days, there is more wireless technology in use than ever before. From phones to toys to industrial automation, wireless devices are being used in all sectors, and for good reason. Wireless technology is portable, easy to install, flexible and eliminates the cost of expensive wiring. With the boom of wireless devices, there has also been a surge of wireless protocols and standards to support all of that technology. These include several short range wireless communication technologies that transmit shorter distances than other long range technologies but still pack a punch, which makes them great for certain applications. Here, we’ll take a look at the long list of short range communication standards and technologies to see how they stack up.

 

ANT+

 

ANT and ANT+ are sensor network technologies used for collecting and transferring sensor data and are maintained by the ANT+ Alliance Special Interest Group. This protocol is a type of personal-area network (PAN) that features remarkably low power consumption and long battery life. It divides the 2.4 GHz band into 1 MHz channels and accommodates multiple sensors. ANT+ is primarily used for short-range, low-data-rate sensor applications such as sports monitors, wearables, wellness products, home health monitoring, vehicle tire pressure sensing and in household items that can be controlled remotely such as TVs, lights and appliances.

 


Bluetooth

 

This popular technology is managed by the Bluetooth Special Interest Group (SIG) and is covered by the IEEE 802.15.1 standard. Originally created as an alternative to cabled RS-232, Bluetooth is now used to send data from PANs and fixed and mobile devices. This plug-and-play technology utilizes the 2.4 -2.485 GHz band and has a standard range of 10 meters, but it can extend to 100 meters at maximum power with a clear path. Bluetooth Low Energy has a simpler design and is a direct competitor of ANT+, focusing on health and medical applications.

 

 

 EnOcean

 

This system is self-powered and able to wirelessly transmit data by using ultra-low power consumption and energy collecting technology. Instead of a power supply, EnOcean’s wireless sensor technology collects energy from the air.  Energy from the environment, such as light, pressure, kinetic motion and temperature differences, is harvested and used to transmit a signal up to 30 meters indoors using a very small amount of energy. In the US, EnOcean runs on the 315 MHz and 902 MHz bands. In Europe, it uses the 868 MHz frequency band and in Japan, it operates on the 315 MHz and 928 MHz frequency bands.

 

 

  FirstNet

 

The FirstNet organization is an independent government authority dedicated to providing specialized communication services for first responders. The FirstNet network is the first high-speed, nationwide, wireless broadband network dedicated to public safety. With this network, all emergency workers are able to use one interoperable LTE network devoted solely to keeping them connected. FirstNet uses the 700 MHz spectrum available nationwide and aims to solve interoperability challenges and ensure uninterrupted communication to enhance the safety of communities and first responders.

 

NFC


Near-Field Communications (NFC) is an ultra-short-range technology created for contactless communication between devices. It is often used for secure payment applications, fast passes and similar applications. Operating on the 13.56 MHz ISM frequency, NFC has a maximum range of around 20 cm, which provides a more secure connection that is usually encrypted. Many smart phones already include an NFC tag.

 

 

RFID


Radio-frequency identification (RFID) uses small, flat, cheap tags that can be attached to anything and used for identification, location, tracking and inventory management. When a reader unit is nearby, it transmits a high-power RF signal to the tags and reads the data stored in their memory. Low frequency RFID uses the 125-134 kHz band, high frequency RFID uses the 13.56 MHz ISM band and Ultra-high frequency RFID uses the 125-134 kHz band. With multiple ISO/IEC standards available for RFID, this technology has replaced bar codes in some industries.

 

 

ZigBee


ZigBee is the standard of the ZigBee Alliance. The path of a message in this network zig-zags like a bee, hence the name. It is a software protocol that uses the 802.15.4 transceiver as a base and is meant to be cheaper and simpler than other wireless personal area networks (WPANs), like Wi-Fi or Bluetooth. ZigBee is able to build large mesh networks for sensor monitoring, handling up to 65,000 nodes, and it can also support multiple types of radio networks such as point-to-point and point-to-multi-point. It has a data rate of 250 kB/s and can transfer wireless data over a distance of up to 100m. ZigBee can be used for a range of applications including remote patient monitoring, wireless lighting and electrical meters, traffic management systems, consumer TV and factory automation, to name a few.

 

 

Where short range communication lacks in distance, it more than makes up for in versatility and capability, and as we can see there are plenty of options available to support all of your short range application requirements.

 

Customers’ Choice

September 29, 2016 at 8:00 AM

 

The votes are in and a winner has been chosen! No, not those votes – your votes for our Customers’ Choice blog post.

 

Customer Experience (CX) Day is October 5th and we want to take this opportunity to make sure we’re giving our customers what they want. For CX Day, we let you choose the topic for our weekly blog post. The winner is (drumroll, please):  Wireless Mesh Networks.

 

Here is an overview of wireless mesh networks and links to additional materials that are sure to please. Thank you and Happy CX Day!

 

Industrial wireless networks have very different needs than traditional enterprise networks. If a business network or small home office loses its wireless connection, it may be an inconvenience but it can be tolerated. If an industrial network loses its connection, the entire operation is put at risk. Industrial networks rely on wireless connections to provide real-time communication between devices, keep production lines running and ensure safe and efficient operation of plants and processes.

 

Wireless mesh networks are one of the most popular technologies being deployed to support industrial applications. They were specifically designed to provide redundancy and self-healing capabilities.

 

Each node in the mesh network is connected to at least one other node and uses intelligent routing to make sure that data reaches its intended destination. This allows the nodes to seek out other nodes to maintain communication if the primary connection is disabled. The technology is so intelligent that the decision of which node forwards the data is made dynamically in that moment. 

 

There are two basic types of mesh networks, partial mesh and full mesh. In a partial mesh network nodes are only connected to some of the other nodes. In a full mesh network every node is connected. Your specific application will determine whether a full or partial mesh network is needed.

 

Many mesh networks use IEEE 802.11 standards that operate in the 2.4GHz and 5 GHz frequency bands. ZigBee and WirelessHART are both self-organizing, self-healing wireless mesh networks that provide the high levels of redundancy and availability needed to maintain a reliable connection.

 

To learn more about wireless mesh networks, read our wireless mesh whitepaper.

 

If there are other topics you would like us to cover, or if you have comments, please email us at engineeringhub@l-com.com.

 

Look Out ZigBee, Here Comes 802.11ah

April 23, 2015 at 10:00 AM

 

This year the IEEE will be finalizing the new 802.11ah standard, an exciting development in the world of wireless sensor networking, and strong competition for ZigBee technology.

 

With the benefits of extended signal range, power efficiency and scalability, 802.11ah promises to expand the range of Wi-Fi connectivity, as well as expand the competitive marketplace of wireless networking technologies.

 

By operating on the 900 MHz frequency band, 802.11ah will be able to better penetrate walls and other obstructions offering longer distance reach than 2.4 GHz and 5 GHz Wi-Fi frequencies.

 

Additionally, 802.11ah will work with moderately low cost battery powered sensors, which will support IoT applications. Data rates will range from 150 Kbps to 40 Mbps and limited on-time for sensors will increase battery life and power efficiency. 

 

Sensor networking is expected to be the primary use of 802.11ah.  Other future applications are to include smart-home and extended reach home Wi-Fi networks, industrial automation sensor networks, commercial network applications and wearable devices.

 

Full standardization is scheduled for early 2016.

 

As 802.11ah is launched, L-com will be there to support you with our wide selection of high quality 900 MHz antennas, 900 MHz RF Amplifiers, and 900 MHz splitters and filters.

 

 

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