New Product: RIOT-002 Series, 2nd Generation of Environment Sensing Board, Data Acquisition of Temperature, Humidity, Atmospheric Pressure, Illuminance, and Acceleration Using Energy Harvesting

Nisshinbo Micro Devices Inc. has launched the RIOT-002, the second generation of the environment sensing board, for use in IoT verification experiments, etc.

Overview

The RIOT-002 is an environment sensing board that can send sensor data of temperature, humidity, atmospheric pressure, illuminance, and 3-axis acceleration to tablets and other devices via Bluetooth Low Energy (BLE).

Equipped with our power management ICs for energy harvesters, ultra-low current consumption ICs and a real time clock IC, this board achieves independent power generation and prolongation of battery operating time, all of which IoT edge devices require. It makes it easy to develop new IoT edge devices, contributes to shortening the construction period of those devices, and is applicable to environment data loggers, electronic shelf tags, etc.

Features

1. Charging from Photovoltaic Panel to Secondary Battery
The R1801, a buck DC/DC switching regulator for energy harvesters, is used to extract power from a photovoltaic panel (not included) and charge the secondary battery. The internal maximum power point control (MPPC) function enables the R1801 to configure its MPPC voltage at which the photovoltaic panel you use can produce its maximum power.

2. High-efficiency Operation
Since the MCU, BLE, and sensors are operated by using the RP605, an ultra-low current consumption buck-boost DC/DC switching regulator with battery monitor, and the RP118, an ultra-low current consumption LDO, both standby and active operation can be performed with high efficiency. The average operating current (at 5-second intervals of BLE transmission) is 22 µA.

3．Dedicated Application
The RIOT-002 series includes our dedicated application for Android. Using the dedicated application enables the RIOT-002 to collect and monitor various environmental data. The application can also be used to set operating hours, transmission interval of environment data, etc.

Improvements over RIOT-001

● Expansion of use situations thanks to an on-board 3-axis acceleration sensor
● Available for several types of small batteries (refer to the specifications for details)
● Improvement of our dedicated application for Android (e.g., setting of operating hours, data transmission interval, etc.)
● Optimization of power management ICs
● Energy saving by time management using RTC

RIOT-002 Series Block Diagram


For more details about the RIOT-002 Series

Example of Appliations

Features of ICs Equipped with Environment Sensing Board RIOT-002

● R1801 Series, Low Power Consumption (IQ 200 nA) Buck DC/DC Converter for Energy Harvester
● RP605 Series, Low Power Consumption 300mA Buck-Boost DC/DC Converter with Battery Monitor
● RP118 Series, Low Supply Current (IQ 200nA) 100mA LDO Regulator
● R2221 Series, Low supply current, 2-wire (I2C Bus) Serial Interface, High-accuracy Real Time Clock (RTC)

Related Link
RIOT-001: Conventional Environment Sensing Board, RIOT-001

Source: https://www.nisshinbo-microdevices.co.jp