Bivocom NB-IoT Router TR321-M

TR321-M is an OpenWrt based Linux OS industrial LTE CAT M1/NB-IoT IoT router, which provides C/C++, Python programmable embedded environment for IoT developers and programmers to implement their industrial applications in a flexible and fast way.

TR321

TR321-M provides dual mode LTE-M/NB-IoT for applications that require different data throughput. Besides, it back supports EDGE/GPRS, which ensures your application can be widely covered by different cellular network. TR321 has 2-RJ45, 1- RS232, 1-RS485, and it is perfect for connecting the ethernet IP and serial port devices to cloud via cellular network. Besides, its auto switchover between wireless and wired WAN, multiple VPN features provide robust and secure connectivity for data transmission.

TR321-M has been widely used for industrial application, such as meter reading, HVAC, solar panel, etc.

Success Case-Smart Meter Using Bivocom TR321-M Onsite

The smart power meter is to use Bivocom NB-IoT Router TR321-M to connect to Schneider’s EasyLogic PM2230 Power & Energy meter via RS485, collecting the data with Modbus RTU protocol and transfer the data to customer’s MQTT cloud IoT platform.

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Links:

https://www.ericsson.com/en/blog/2019/2/difference-between-nb-iot-cat-m1

The post Bivocom’s NB-IoT Router Selected for Smart Meter in Singapore appeared first on Bivocom.

What is HVAC?

HVAC stands for Heating, Ventilation, and Air Conditioning, and refers to the different systems used for moving air between indoor and outdoor areas, along with heating and cooling for residential, commercial and industrial buildings. They are used to keep people warm and cool in winter and summer, and keep people healthy by filtering and cleaning the indoor. Besides, they are also used for maintain the ambient temperature and humidity for things in commercial and industrial buildings, such as server room, factories, biological medicine manufacturing and storage, to keep the things at a certain level of temperature and humidity.

Figure 1. All-air HVAC system for single zone.

Source: https://www.intechopen.com/books/hvac-system/types-of-hvac-systems

Although there are so many applications of HVAC, today, we’re going to talk about smart HVAC in commercial building. Let’s have an overview of what is smart HVAC and what benefits we can get from it?

Why Smart HVAC?

A smart HVAC system leverages networked HVAC components, sensors and other technologies, such as IoT(Internet of Things), big data, cloud, artificial intelligence, etc., it’s the natural evolution of a building automation system (BAS).

Image source: Daikin

Why we need smart HVAC?

As you may know, HVAC system consumes about 40% of energy of whole commercial building, while after that, it’s lighting. So how to find a solution that will help the building owner save energy consumption, lower operation costs has become a challenge. While using smart HVAC, as there is an IoT router or gateway like Bivocom TR321-M connect to controllers or sensors of HVAC systems, to transfer the data to remote cloud server. In this way, building manager will easily know the status of HVAC and remotely control it on and off. Besides, the IoT enabled HVAC systems also provides predictive maintenance benefits, where maintenance crew will the potential operation issue of whole system before its badly breakdown, as well as remote troubleshooting and maintenance.

Benefits of Smart HVAC

1. Self-monitor operation conditions, potential malfunction can be detected and warned
2. Lower energy consumption, Proactive energy saving management
3. Predictive data analysis, proactively identifies maintenance
4. Save labor hour and maintenance cost
5. Cut carbon emissions
6. Improve building performance and efficiency

Why Daikin Chooses Bivocom LTE-M/NB-IoT Router TR321-M?

Daikin is the leader to provide the smart HVAC systems to global customers, so there are many legacy 3G routers and 4G routers installed in their systems. But as the phase out of 3G routers, price of other brands’ 4G router and  data plan are high, while their data bandwidth requirement is not that big, so they are looking for a new and cost-effective solution to replace legacy 3G router and 4G router.

Conclusion

There are benefits of TR321-M for Daikin’s smart HVAC.

1. LTE CAT M1 and NB-IoT technology, provides better coverage and lower energy consumption
2. Openwrt based Linux OS, provides C/C++/Python programming environment for IoT developers, where they can install their own applications on Bivocom IoT routers
3. Instead of using 4G router, LTE-M/NB-IoT router TR321-M is a more cost-effective solution, as both its hardware and data plan is cheaper than 4G.
4. TR321-M is able to operate between -35~+75^。C, it supports automatic reboot, or reboot via SMS or commands to ensure the robust and stable connectivity.
5. Bivocom provides fast, flexible technical support and customized R&D support for IoT developers, helping them to bring their IoT ideas to reality quickly.
6. TR321-M supports industrial protocols, such as Modbus RTU/TCP, MQTT, JSON, quickly convert data to the format customer required, helping Daikin save bandwidth of server.

The post Daikin Chooses Bivocom IoT Router for Smart HVAC appeared first on Bivocom.

In addition, NB-IoT focuses specifically on indoor coverage, low cost, long battery life, and high connection density. NB-IoT uses a subset of the LTE standard, but limits the bandwidth to a single narrow-band of 200kHz. It uses OFDM modulation for downlink communication and SC-FDMA for uplink communications.  IoT applications which require more frequent communications will be better served by NB-IoT, which has no duty cycle limitations operating on the licensed spectrum.

In March 2019, the Global Mobile Suppliers Association announced that over 100 operators have deployed/launched either NB-IoT or LTE-M networks.This number had risen to 142 deployed/launched networks by September 2019.

In conclusion, NB-Iot characteristics is: wide coverage, low power consumption, low cost, large connection and other characteristics.

  1. NB-iot network architecture

• Terminal: Mainly connect to the base station through the air interface. The terminal side mainly includes industry terminals and NB-IoT modules. Industry terminals include: chips, modules, sensor interfaces, terminals, etc.; NB-IoT modules include wireless transmission interfaces, soft SIM devices, sensor interfaces, etc.
• Wireless network side: includes two networking methods, one is Single RAN (Single Radio Access Network, integrated wireless access network), including 2G/3G/4G and NB-IoT wireless networks; the other is NB-IoT is newly built. It is mainly responsible for air interface access processing, cell management and other related functions, and connects to the IoT core network through the S1-lite interface, and forwards non-access layer data to higher-level network elements for processing.
• Core network side: Network elements include two networking modes, one is the integrated Evolved Packet C (Evolved Packet C data transmission mode, welcome to exchange and learn ore, EPC) network elements, including 2G/3G/4G Core network; the other is the core network of the Internet of Things. The core network side supports NB-IoT and eMTC user access through IoT EPC network elements and EPC shared by GSM, UITRAN, and LTE.
• IoT support platform: including HLR (Home Location Register), PCRF (Policy Control and Charging Rules Function), M2M (Machine to Machine, Internet of Things) platform.
• Application server: It is the final gathering point of IoT data, and performs data processing and other operations according to customer needs.

  2. NB-IoT application classification

  Above all, in the field of low-speed Internet of Things, NB-IoT, as a new standard, achieves the ultimate in cost, coverage, power consumption, and number of connections. This technology is widely used in eight typical industries, including public utilities, healthcare, smart cities, consumers, agricultural environments, logistics and warehousing, smart buildings, and manufacturing.

• Public utilities: meter reading (water/gas/electricity/heat), smart water (pipe network/leakage/quality inspection), smart fire extinguisher/fire hydrant.
• Manufacturing industry: production/equipment status monitoring, energy facilities/oil and gas monitoring, chemical park monitoring, large-scale rental equipment, predictive maintenance (home appliances, machinery, etc.).
• Medical and health: drug traceability, remote medical monitoring, blood pressure meter, blood glucose meter, heart guard monitoring.
• Smart city: smart street lights, smart parking, urban trash can management, public safety/alarm, construction site/urban water level monitoring.
• Logistics warehousing: asset/container tracking, warehouse management, fleet management/tracking, cold chain logistics (status/tracking).

• Smart buildings: access control, smart HVAC, smoke/fire detection, elevator failure/maintenance.
• Consumers: wearable devices, bicycle/moped anti-theft, smart luggage, VIP tracking (children/elderly/pet/vehicle rental), payment/POS machines.
• Agricultural environment: precision planting (environmental parameters: water/temperature/light/medicine/fertilizer), animal husbandry (health/tracking), aquaculture, food safety traceability, urban environmental monitoring (water pollution/noise/air quality PM2.5) .

The post A detailed description of the NB-IoT appeared first on Bivocom.

About TW810

● Industrial MCU built in, rugged and reliable
● LTE Cat M1, NB-IoT and EDGE/GPRS compatible
● 1-RS232, 1-RS485
● Modbus RTU, TCP/UDP, AT Command
● Up to 5 sync data center
● Wide operation voltage: 5-35VDC
● Working temperature: -35C~+75C

TW810 Modem

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