Recently, Cat.1 products, which have caught the eye again due to their "price", continue to appear on the "Hot Searches of the Internet of Things", and once again appear in the field of low-to-medium speed connections. Compared with NB-IoT, Cat.1, which has stronger communication capabilities and wider applicability, can better meet the application requirements of most IoT terminals. Focusing deeply on Cat.1 technology iterations and the actual needs of industry customers, Fibocom and Yahua Wulian took the lead in deploying Cat.1 products, and jointly launched a smart gas solution based on Cat.1 modules, realizing the scale of Cat.1 in the terminal industry Intelligent deployment and high-value operation can effectively empower the construction of smart cities.
With the development of carbon neutrality, clean, efficient and green natural gas has been developed rapidly, providing services to thousands of households. In this context, to get rid of the hysteresis of manual meter reading and maintenance, smart gas meters can realize remote meter reading, safety warning, remote maintenance and other functions, help improve the efficiency of gas operation and maintenance, and tighten the "safety valve" of gas.
The smart gas solution jointly launched by Fibocom and Yahua IoT can run smoothly under the 4G network of mainstream operators, has stronger communication capabilities and network adaptation capabilities, and has high reliability. The Fibocom Cat.1 module adopts an extreme size design, which can effectively simplify the development and design of gas meters and shorten the development cycle. In addition, the Cat.1 module with continuous cost optimization drives the wide application of gas meters, realizing the large-scale deployment of Cat.1 in the metering industry.
Facing the problem of power consumption, Fibocom, Yahua IoT and operator partners have successfully reduced the power consumption of Cat.1 modules to a level comparable to or even better than NB-IoT through technical breakthroughs and innovations, effectively solving the problem The power consumption of Cat.1 gas meters is inseparable from the close cooperation between multiple parties in technology and products.
Yahua IoT chose DCDC (device for converting between high and low voltage DC) as the power management chip, optimized the power supply strategy under the PSM working state, completed the automatic switching, and solved the current backflow problem during the automatic switching of the power supply. At the same time, Yahua IoT has optimized the strategy of querying AT commands on the network, from the previous 3 seconds to 20 milliseconds, optimized the disconnection strategy, reduced the connection time by 1.5 seconds, and reduced the average power consumption by about 30%.
When the Fibocom Cat.1 module enters the PSM mode, it wakes up the module through the pin, and the current consumption is not higher than 3uA. When the module enters the working state, the power management module manages the power consumption of the module, which not only ensures the power consumption required for 4G communication when the module is working, but also controls the low-power standby of the module in PSM mode, effectively reducing the overall power consumption. terminal power consumption. The wake-up of the module under the control of the MCU not only ensures normal communication, but also reduces the average power consumption of the device, reducing the average power consumption of a single service to the same level as NB-IoT, or even lower.
In addition to technological upgrades and breakthroughs on the hardware side, network optimization is also one of the "contributors" to realizing the low power consumption of Cat.1 modules. At present, the three major operators have completed the live network commissioning of PSM low power consumption characteristics. When connected to actual application scenarios, they can provide low-latency, wide coverage, low power consumption, and high reliability for the field of gas IoT. Wireless connections.
At present, this solution has been widely used in a series of terminal products such as smart gas meters, temperature and pressure records, and calculators developed by Yahua IoT to help build smart cities. The smart gas solution is the application of the innovative technology of Yahua IoT and Fibocom in the low-power network of operators. This is of great significance to the promotion of Cat. Service indicators support the wide application of Cat.1 in more scenarios.
Li Hailong, general manager of Yahua IoT, said : "Fibocom is the world's leading supplier of IoT wireless communication solutions and wireless modules, with industry-leading research and development capabilities. In this cooperation, the two parties will give full play to their respective advantages and work together to overcome difficulties. It solved the problem of high power consumption of cat.1 gas meters, promoted technological innovation and research and development, and jointly promoted the application and development of cat.1 in the field of smart meters. In the future, the two parties will continue to cooperate in depth to bring more benefits to the industry Technology development, further promote the application and innovative development of digitalization and intelligence in the field of smart meters, and jointly promote the construction of smart cities."
Zhu Tao, VP of Fibocom Marketing Department, said : "We are very pleased to have in-depth cooperation with Yahua IoT and operator partners in the field of smart meters. Based on cost optimization, low power consumption, and high reliability Cat.1 modules Group, smart gas solutions can realize remote communication and maintenance, and show their talents in the field of smart cities. With high-performance wireless module solutions, Fibocom has joined hands with a wide range of industry leaders such as Yahua IoT and operators to promote the development of thousands of cities. The digitalization and intelligence of all industries will lay the foundation for the Internet of Things to shape the future of the intelligent connection of all things."