On October 19, 2015, Dalian United Holdings, a leading semiconductor component distributor dedicated to the Asia-Pacific market, announced that its subsidiary has launched an ultra-long-range low-power IoT solution based on Semtech's LoRa spread spectrum communication technology. The solution consists of Semtech's SX1276 and ST's STM8L151K4.
The Internet of Things market is exploding at an alarming rate, and its applications will be spread across industries and sectors. However, how to solve the low-power ultra-long-range IoT application with the best cost performance has always been one of the major challenges faced by engineers: Mesh network and GSM can solve the long-distance networking requirements, but they are subject to high energy consumption. And high cost. In response to the above constraints, Dalian Dayou has specially launched an Internet of Things solution based on LoRa spread spectrum communication technology to achieve both low power consumption and long distance at the same time.
Figure 1 - Block diagram of LoRa spread spectrum communication technology IoT solution launched by Da Lian Dayou
The ST STM8L151K4 from Dalian United Friends of the Year uses 130nm process technology, the logic function uses ultra-low leakage current transistors, the analog function uses low-voltage transistors, and the innovative low-power embedded memory, new low-voltage low-power standard peripherals and innovative Power management architecture. This ultra-low-power 8-bit MCU solves the engineer's need for an efficient processor architecture with low cost, low power, and high design flexibility.
Figure 2 - Photo of LoRa Spread Spectrum Communication Technology Internet of Things Solution
Function description:
1, the gateway (with LCD screen)
- Can be used as a star network gateway
- Can be used as a one-way transmission receiver
2, node end (no LCD screen)
- Can be used as a star network node gateway
- Can be used as a one-way transmission transmitter
3, GPS module (optional)
- Can be used to send GPS addresses for node segments
The SX127x series, which is represented by the company, is a key communication device that Semtech provides to remote high-capacity data network system solutions. In addition to the traditional GFSK modulation technology, the new SX127x series also uses LoRaTM spread spectrum technology.
The LoRa spread spectrum technology has the following salient features :
Strong anti-interference: it is one of the main characteristics of spread spectrum communication. Since the signal reception requires spread spectrum coding for correlation despreading processing, the interference does not work even if the same type of signal is used for interference;
Good concealment: Because the signal is spread over a wide frequency band, its signal power spectral density is extremely low, which is not only difficult to detect, but also less likely to interfere with other communication devices;
Long communication distance: When working in the limits set by regulators in the US, EU, China and Japan, the LoRa technology series can increase the data transmission distance in the suburbs to more than 15 km (9 miles) and the data transmission distance in dense urban areas. Lifting to 2-5 km (3 miles) can significantly reduce the need for a relay. Take the lower Manhattan suburb of New York, USA as an example, as long as seven gateway machines can be fully covered;
Low power consumption: The most obvious benefit of LoRa technology for IoT applications is that it can extend battery life and is a huge advantage for sensors that may be spread throughout the city in the future, and can reduce operating costs.
According to industry analysts' predictions for a total of 50 billion nodes by 2020, the rapid development of the Internet of Things market needs to improve its physical layer in order to achieve longer transmission distances, low-power operation of batteries, and low-cost mass deployment. LoRaTM technology is not only the ideal solution to meet these needs, but also an attractive option for 2G/3G GSM in this fast-moving market.
Application case :
A company needs to monitor the flow of goods from or to the factory in Shanghai, Taipei, and Shenzhen by the head office MIS.
Figure 3 - Application of LoRa Spread Spectrum Communication Technology IoT Solution from Datong Dayou
A big amusement park wants a product that can be rented out to parents so they can track the children's location, don't worry about losing
Figure 4 - Application case of LoRa spread spectrum communication technology IoT solution launched by Da Lian Dayou
About Dalian United Holdings :
Datongda Holdings is the world's number one semiconductor component distributor with leading market share in the Asia Pacific region. Headquartered in Taipei (TSE:3702), it owns nearly 6,000 employees including Shiping, Pinjia, Zhiding and Youshang. People, more than 250 agent products suppliers, more than 120 distribution bases around the world (about 70 in the Asia-Pacific region), turnover in 2014 reached 14.9 billion US dollars (self-contained). (*Market rankings are published by Gartner)
Dalian United Holdings holds an industry holding platform, continuously optimizes the front-end marketing and logistics support team, acts as a professional partner in the industrial supply chain, provides Demand CreaTIon, turnkey solutions (Turnkey SoluTIon), technical support, warehousing logistics and IC Value-added services such as e-commerce meet the needs of different customers such as original equipment manufacturers (OEMs), original design manufacturers (ODMs), electronic manufacturing service providers (EMS), and small and medium-sized enterprises. The scale of international operations and localized sales channels have long been deeply rooted in the Asia-Pacific market. It has been selected as the “Best IC Distributor in Asia†by professional media.
In order to improve the quality of localization services of the United Nations General Assembly and meet the differentiated needs of customers in the service areas of Greater China, the six major areas of the United Nations (China) services include China-Based Manufacturers and Taiwan-Based Manufacturers. ), Foreign Manufacturing Service, Japan-Based Manufacturers, Korea-Based Manufacturers and Hong Kong-Based Manufacturers customers. In addition to providing customers with the best turnkey solution (Turnkey SoluTIon), and in order to meet the customer's small-volume device procurement needs, the company has set up a dedicated small batch service team (SQS, Small QuanTIty Service). The United Nations has established the United Nations General University of Commerce and Trade in the Mainland and Hong Kong, the United Nations General Trading (Shenzhen) and the United Nations Electronic (Hong Kong), with the "Industry's Choice. Passage Benchmark" as the corporate vision and the full implementation of "Team, Integrity, The core values ​​of professionalism and efficiency are professional services to achieve mutual benefit and win-win for suppliers, customers and shareholders.
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