Compared with the mature technology and more Wi-Fi and Bluetooth products, Zigbee technology has become the new darling of wireless applications in recent years due to its low power consumption, low technology cost, simple structure and large capacity. Battery devices using Zigbee technology have a battery life of 3-5 years, which is unmatched by Wi-Fi-enabled devices.
In recent years, with the continuous development of technology, people have put forward new requirements for the security system, such as intelligence, cost-effectiveness and information sharing. In view of this, Silicon Labs (also known as "core technology") provides a powerful dynamic multi-protocol ZigbeeSoC - EFR32MG Mighty Gecko, to help agent partners Shiqiang, and customers - Xiamen Dayang Communications, the latest launch based on Silicon Labs Multi-network intelligent security system developed by Zigbee chip .
Zigbee is the core technology of the whole system design. How to choose a suitable and high-performance Zigbee chip will play a decisive role in the final effect of the whole system. In the following, we will discuss the selection of Zigbee devices in the design process of Xiamen Ocean Security Intelligent Security Success Case and the final success.
Initial plan
Figure 1. Xiamen Ocean Communications Multi-Network Security System
As shown in Figure 1. The security system uses the intelligent gateway as the control center, accesses a variety of security items such as security sensors, alarms, cameras, etc., and cooperates with the cloud server to transmit and store massive amount of equipment data, and builds a complete intelligent security system; The mobile APP client controls the security of multiple locations in multiple locations at one location; it can be applied to schools, companies, farms, large public places, etc.
At the beginning of the system design, Zigbee chip modules, which are widely used in the market, are compared with the EM35x series of Silicon Labs and the CC2530 series of T company. The CC2530 chip protocol is simple, but the disadvantage is that the small amount of development space leads to a limited number of devices that can be connected. In contrast, the EM35x has many advantages over the CC2530 series, including large development space, fast signal transmission rate, and better stability.
After some selection and comparison, Silicon Labs' EM357 chip from Shiqiang agent was used. Under the premise of complete development of the intelligent security system, the space of Zigbee chip is very small, leaving a large space for development and utilization. Moreover, based on the EM357 Zigbee multi-network intelligent security system, in a practical application, a gateway can connect more than 700 terminal devices to operate normally.
Upgrade optimization planNowadays, the requirements for the transmission data speed and signal stability are constantly increasing. And the increasing number of terminal devices has put forward higher requirements for power consumption performance. In this regard, silicon Labs seems to have expected that its newly developed EFR32 Mighty Gecko series provides a first-class multi-protocol SoC solution for low-power 802.15.4 mesh networks. At present, Shiqiang also has the product and technical service support of the chip, so EFR32MG is undoubtedly the best choice for system upgrade optimization.
The EFR32MG supports Silicon Labs' industry-leading Zigbee PRO software stack for Zigbee applications, supporting pre-authenticated Thread protocol stacks for IP mesh-based networks. Provides a seamless migration path for customers who need to use Zigbee or Thread to support connectable devices. As a result, developers have the flexibility to choose the best protocol for this smart security application (Zigbee, Thread, Bluetooth Smart or proprietary).
The advantages of EFR32MG are as follows:· The newly designed ARM cortex-M4 core guarantees low power consumption and as a gateway, it has ultra-fast data processing speed. In summary, the EM357 performance of the M3 core is higher than that of the M3 core, which facilitates the expansion of security product functions and subsequent upgrade maintenance;
Multi-protocol switching, support Zigbee, Thread, BLE, Sub-GHz a variety of different protocols. In addition, it can greatly save the space of the PCB, and it is the king of cost performance;
· Universal development platform;· Support multiple wireless coexistence, and reduce the risk of relying on a single vendor;
· Zigbee/Thread can be used to control lighting equipment, or Bluetooth can be used for network configuration, which can simplify the installation and maintenance of the entire security system.
The advantages of dynamic multi-protocolBased on Silicon Labs' Zigbee chip, Xiamen Dayang Communication has a multi-network intelligent security system. It not only supports multi-function remote control and multi-network simultaneous remote monitoring, but also can be used in multiple types of gateway modes to record events in an all-round way for users to view. Powerful and comprehensive security functions to build a comprehensive intelligent security system.
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