FAQs on Sensors and IoT

Q. - Which sensors are most suitable for the Internet of Things era?

A. - Can be classified according to application scenarios

1. Urban Lighting :
   Use LoRa technology to realize street light control in a region, and control the on and off of street lights through light sensor;
2. Community :
   Using NB-IoT technology to perform remote transcription and payment through sensors such as smart gas, smart electricity, and smart water meters;
3. Office area :
   Using LoRaWAN technology, real-time monitoring of office buildings can be achieved through temperature and humidity sensors, smoke sensors, and air quality sensors.

In addition to the above scenarios, IoT sensor technology can also be applied in smart homes, building equipment, home security, smart industry, smart metering, supply chain and logistics, and more.

Q. - What are the common IoT communication methods?

A. - Common IoT communication methods are divided into four categories: wired transmission, wireless transmission, traditional Internet, and mobile air network.

• Wired transmission: wire, audio line, switch signal line, RS232 serial port, RS485 bus, USB, etc.
• Wireless transmission: Bluetooth, ZigBee, Z-ware, LoRa, etc.
• Traditional Internet: WIFI, Ethernet
• Mobile air network: 4G, 5G

Q. - What is the short-range wireless communication of the Internet of Things?

A. - Short-range wireless communication

• BlueTooth:Low cost and close proximity, enabling seamless resource sharing for various devices within close proximity
• NFC: Provides a simple, touch-sensitive solution
• Z-wave: RF-based low cost, low power consumption, high reliability, the transmission speed of 9.6Kbit/s
• Zigbee: A short-range, low-speed wireless technology based on the IEEE 802.15.4 low-frequency wireless network standard, the effective range is between 10m and 50m, and the maximum data transmission speed supported is 250Kbit/s
• Wifi: It belongs to the IEEE 802.11b protocol, the transmission speed is fast, the effective distance is also very long, no wiring is required, and it is healthy and safe.
• RFID: RFID uses the RF frequency band, which belongs to the RFMesh network from the perspective of communication, but the main function of FRID is still based on identification (TAG).
• LoRa: Low power consumption, long-distance, low cost, high battery life, high mobility, and stability of communication when moving at high speed.

Q. - What are the current IoT operating systems?

A. - Embedded operating systems are computer systems designed for a specific purpose, to increase functionality and reliability for achieving a specific task.

The "embedded operating system", is a general term for a type of operating system. The operating systems include HelloX, ARM Mbed OS, Android IoT/Brillo, Windows 10 IoT Core, WatchOS, Ubuntu Core 16, μCLinux, QNX, TRON, μT/OS, FreeRTOS, TinyOS, etc. There are many more, IoT operations The system is an important part of the new generation of information technology.