Wi-Fi and Bluetooth Low Energy are the two most commonly used wireless communication technologies for the Internet of Things. The former supports higher data transmission rates and convenient networking mechanisms, while the latter supports ultra-low power consumption P2P connections. They are often used together in IoT applications and complement each other. Recently, Shenzhen Xinchida Technology RF-star, a leading wireless IoT communication module manufacturer, launched a low-power WiFi Bluetooth two-in-one communication module based on ESP32-C3 SoC - RF-WM-ESP32B1.
This module uses the Espressif SoC chip ESP32-C3. Equipped with a RISC-V 32-bit single-core processor with an operating frequency of up to 160 MHz, built-in 400 KB SRAM, 384 KB ROM, 8KB RTC SRAM, built-in 4MB Flash, and supports external Flash. The chip supports a variety of low-power working states and can meet the power consumption requirements of various application scenarios. Its unique fine clock gating function, dynamic voltage clock frequency adjustment function, RF output power adjustable function and other features can achieve the best balance between communication distance, communication rate and power consumption. Since the SoC comes with sufficient MCU and peripheral resources, users can achieve high-value secondary development without using other microcontrollers or processors for the Internet of Things (IoT), mobile devices, wearable devices, smart homes, etc. Various applications provide an excellent design platform.
Figure 1 ESP32-C3 chip
The RF-WM-ESP32B1 Wi-Fi/BLE Bluetooth two-in-one module is based on the 2.4G frequency band. It supports the Wi-Fi IEEE 802.11b/g/n protocol and BLE 5.0 protocol stack, and provides a wealth of peripheral interfaces, including UART, PWM, SPI, I2S, I2C, ADC; has a variety of unique hardware security mechanisms. The hardware encryption accelerator supports AES, SHA and RSA algorithms, among which RNG, HMAC and digital signature (Digital Signature) provide more security performance . The module supports low-power Bluetooth: Bluetooth 5, Bluetooth mesh, Bluetooth speed support: 125Kbps, 500Kbps, 1Mbps, 2Mbps, and supports broadcast expansion, multi-broadcast, and channel selection.
The RF-WM-ESP32 series WiFi/BLE modules have the advantages of security, low power consumption, and low cost. They support 2.4GHz Wi-Fi and Bluetooth5 (LE), simplify the hardware structure design, reduce product costs, and customers can quickly and easily develop embedded wireless application products to shorten the development cycle. The module is suitable for various scenarios, and all types of equipment can be connected to the Internet for information exchange and communication to achieve intelligent identification, positioning, tracking, monitoring and management. Through serial communication, the data collected by the device sensor is transmitted through the WiFi module, and at the same time, the instructions sent by the mobile phone are transmitted through the WiFi module to control the device. Customers can use it to easily realize the wireless network function of serial device, save development time and improve market competitiveness.
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Typical application scenarios
01
Smart street light
Street lights that can be seen everywhere in the city not only bring convenience to people's lives, but their huge energy consumption and high manual inspection, management and maintenance costs also cause city managers to take great pains. By connecting city lighting street lights to the Internet of Things network, managers can clearly understand the status information of each block and street light. By applying flexible lighting strategies, on-demand lighting can be truly realized, and lighting Internet of Things solutions have emerged. , to solve problems for city managers.
The access method of smart street lights using Wi-Fi IoT street lights has the characteristics of low power consumption, self-organizing network, rapid self-healing, and can better interact with sensors and other smart devices.
Figure 2 Smart street light
02
Photovoltaic power generation monitoring system
The photovoltaic power generation monitoring system can perform real-time monitoring and control of the battery arrays, combiner boxes, inverters, AC and DC distribution cabinets, temperature sensors, solar tracking control systems and other equipment in the solar photovoltaic power station. Real-time monitoring of voltage and current output by solar panels; battery voltage, charge and discharge current, instantaneous power generation, cumulative power generation, single cell voltage, single cell temperature, ambient temperature, inverter output voltage, current and power distribution Switch status, etc. At the same time, data collection for real-time monitoring of the operating status of peripheral equipment, such as lightning arrester status, circuit breaker status, CO2, SO2 emission reduction, etc.
Using Wi-Fi local networking and cloud migration through 4G gateway, remote data collection, equipment parameter and event monitoring can be achieved to ensure the stable operation of photovoltaic power plants.
Figure 3 Photovoltaic power station
The dual support of RF-WM-ESP32 series modules for Wi-Fi and Bluetooth5 (LE) reduces the difficulty of device network distribution and is suitable for a wide range of Internet of Things application scenarios. The commonality of modular products is high integration and convenient application, allowing Customers can easily implement wireless modules into their products, simplifying and accelerating product development cycles and reducing engineering and product costs.
About Xinchida
Shenzhen Xinchida Technology Co., Ltd. (RF-star) is a high-tech company specializing in RF communication solutions for the Internet of Things. When it was founded in 2010, it became the official authorized solution provider of TI in the United States. Later, it successively obtained products from Silicon Labs, Nordic, Recognition and support from well-known chip companies at home and abroad such as Realtek and ASR. The company provides IoT wireless modules and application solutions, including BLE, Wi-Fi, Wi-SUN, LoRa, Zigbee, Thread, UWB, etc. For more information, please visit the company website or follow the WeChat public account "Xinchida Technology". To purchase samples, please search "Xinchida" on Taobao APP to enter the official store to purchase.