What are the characteristics of NB-IoT, what are the application scenarios
" NB-IoT Module Base - Power Consumption and Stability
Ultra-low-power module is the key for battery-powered IoT terminals to work for a long time. Currently, utility meters, gas meters and other meters are battery-powered, the meter industry for the production of utility meter life requirements are usually 6-8 years or even longer, and NB-IoT module as the largest power consumption source inside the meter, the level of power consumption directly affects the meter's use of the length of time. As the operating time of NB-IoT terminals lengthens, the requirements for exception handling, environment adaptation, and system stability become higher and higher, and the reliability requirements for the modules become more and more demanding. Therefore, the reliability of NB-IoT modules is the core requirement of IoT device terminals.
Thousands of refinement, resulting in ultra-high reliability
As one of the promoters of NB-IoT, Megger Intelligence has been focusing on the customization of SoC for NB-IoT modules, and has always adhered to the dual-platform "two-legged walk" strategic planning. In response to the above issues, Megger Intelligence, facing the needs and challenges of industry partners, conducted reliability tests on a variety of NB-IoT modules in harsh temperature and humidity environments, in order to effectively address the concerns of the majority of NB-IoT partners about the stability of the product.
"Data is the main support for product performance". The test was conducted mainly for the company's existing SLM130, SLM160, SLM130X three NB-IoT modules, and finally passed the three "1000 hours" of harsh mass production routine test.
1000 hours of normal operation and maintenance in room temperature and humidity: Firstly, Megger Intelligence conducted the test on the three NB-IoT modules (SLM130, SLM160, SLM130X) in room temperature and humidity, and the test samples were powered on and off for 1,000 hours, and they still maintained continuous normal operation and maintenance.
1000 hours of high temperature and high humidity without network: In the high temperature test session, Megger Intelligent will NB-IoT module samples loaded with eSIM card and antenna and placed into the environmental test box, in the case of stable mobile network coverage in the way of serial port connection module access to the computer to raise the temperature of the test box to 85 ℃ at a rate of 1 ℃ / min, and power on the power supply, through the computer serial port AT command tool, 1 minute intervals cycle AT command occurs. The AT command tool of the computer serial port was used, and the AT command "AT+ECPING=www.baidu.com" occurred in 1-minute intervals for 1000 hours of repeated high-temperature and high-humidity test verification, and the final test proved that, under the high temperature, the three models of Megger Intelligent (SLM130, SLM160, SLM130, SLM160 and SLM130X) NB-IoT modules can still maintain normal and stable network connection and data transmission services, and their excellent performance speaks for itself.
1000 hours of continuous reliability at ultra-low temperature: Subsequently, using the same means as high-temperature testing, the three (SLM130, SLM160, SLM130X) NB-IoT modules of Megger Intelligence have maintained a stable network connection even when the test chamber was lowered from ambient temperature to -40°C at a rate of 1°C/min during the 1,000-hour test. The NB-IoT module also maintains a stable network connection even when the computer frequently initiates commands every 1 minute, strongly proving the super stability and ultra-high reliability of Megger's intelligent NB-IoT module.
" One battle, two victories, Megger Intelligence successfully won the bid
In terms of the development history, NB-IoT is currently probably the fastest development progress of communication technology in history, since the freezing of the standard in June 2016, the development of NB-IoT is developing at a rapid pace. China Telecom, as one of the country's four largest operators, has been contributing a lot to NB-IoT's move toward commercialization, and in 2017 China Telecom announced that it had completed the simultaneous upgrade of 300,000 NB-IoT base stations, building the world's largest commercial network.
Recently, China Telecom another customized version of NB-IoT module products centralized recruitment project public announcement results, Megger Intelligence as the world's leading wireless communication modules and solutions provider, has a wealth of IoT module product line, its NB-IoT module SLM130 and SLM130X on the basis of excellent performance successfully shortlisted in China Telecom's bidding project!
This series of products adopts a highly integrated program design, featuring ultra-low power consumption, ultra-high sensitivity, LCC packaging, easy mass production, and supports ultra-wide voltage. It supports Band3/Band5/Band8 frequency bands with super network compatibility. In addition to the above frequency bands, MEGAMAN? Smart Overseas SLM130G module also supports Band20/Band28 frequency bands. It also supports normal operation and maintenance at ultra-wide operating temperature of -40°-+85°, which meets the needs of multi-domain and multi-industry scenarios for equipment stability and ultra-long working operation and maintenance.
The NB-IoT modules SLM130 and SLM130X, which won the bid, have passed NAL, SRRC, ROHS and other related certifications, and the series of products support China Mobile OneNET, China Telecom, Huawei OceanConnect and Aliyun and other open platforms for IoT. It supports domestic all-network band, embedded network service stack for easy application, low voltage power supply (2.2V~4.5V), built-in eSIM card location, and low-power power-saving design, which can satisfy most of the IoT product application requirements.
Secondly, this series of products support Release14, including CAT-NB2, 2-Harq, OTDOA and other features; built-in Cortex-M3 core, the highest main frequency of 204MHz, built-in 4MB Flash, plenty of memory; it also supports 26 GPIO ports, 3 UARTs, 2 SPIs, 2 I2Cs, 4 ADCs
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Up to now, Megger Intelligent NB-IoT module product camp is powerful and rich in models, and has helped thousands of low-power wide-area IoT device terminals to realize network access. Its NB-loT module products for sale, SLM100, SLM130, SLM130X, SLM130G (overseas version), SLM130F, SLM160, SLM160X, SLM190, SLM190X, etc., are all designed with high-integration solutions, featuring industry advantages such as high performance, low power consumption, wide coverage, low cost and large capacity. They have been widely used in many fields such as smart meter reading, smart parking, smart smoke detection, smart city, **** enjoyment devices, security, asset tracking, smart home appliances, wearable devices and other areas to form a large-scale commercialization.
China Telecom, as an important strategic partner of Megger Intelligence, has had strategic cooperation in a number of projects in the field. In 2020, Megger Intelligence's Cat.1 module SLM320 and Cat.4 module SLM790 won the bid for the centralized purchasing project of the Internet of Things (IoT) modules of Jiangsu Branch of Tianyi Telecom Terminal Co. The winning of several NB-IoT modules further emphasizes the leading position of Megger's intelligent modules in the industry.
In the future, Megger Intelligence will continue to strengthen R&D investment in new products, work with operators, government agencies, and upstream and downstream industry chain partners to collaborate on technological innovation, infrastructure, and enabling applications, and to provide strong support for the IoT industry terminals and the digital applications of thousands of industries.