TDK Extends Ultrasonic ToF Sensor Platform for Long-range up to 5m
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The new CH201 Time-of-Flight (ToF) range sensor platform expands on the CH101 product portfolio and includes CH201 MEMS sensors, sensor modules, and developer kits, all currently available through worldwide distribution.
Extends accurate range measurements for distances up to 5m over a wide and configurable Field-of-View (FoV) in any lighting condition.
Integrates a PMUT (Piezoelectric Micromachined Ultrasonic Transducer) with an ultra-low-power SoC (system on chip) in a miniature 3.5 x 3.5 mm reflowable system-in-package.
TDK Corporation announces the worldwide availability of the Chirp CH201 long-range ultra-low power integrated ultrasonic ToF sensor platform. The solution includes the CH201 MEMS sensor, sensor modules, and developer kits – and accompanies Chirp's original CH101 ultrasonic ToF sensor product. CH101 provides accurate range measurements for use case scenarios of up to 1.2m, and the new CH201 builds to provide exact long-range measurements to targets at distances up to 5m. Chirp's MEMS ultrasonic technologies leverage proprietary Time-of-Flight (ToF) range sensors in a 3.5mmx3.5mm package that combines a MEMS ultrasonic transducer with a power-efficient digital signal processor (DSP) on a low-power mixed-signal ASIC.
Following on CH101 as the first commercially available MEMS-based ultrasonic ToF sensor, CH201 is also ultra-low power and compact, provides millimeter-accurate range measurements, and works in any lighting condition, including full sunlight to complete darkness independent of the target's color and optical transparency. Matching CH101, the CH201 has a configurable Field-of-View (FoV) and a flexible DSP capable of handling a variety of ultrasonic signal-processing algorithms.
The CH201 platform mirrors the flexibility of the CH101, offering flexible industrial design options for a broad range of use-case scenarios, including range-finding, presence/proximity sensing, and object detection/avoidance.
CH201 sensor platform solution:
CH201
The CH201 MEMS sensor provides accurate range measurements to targets up to 5m away.
Using ultrasonic time-of-flight measurements, the sensor works in any lighting condition, including full sunlight, and provides millimeter-level accuracy, independent of the target's color and optical transparency.
Developer Kit for prototyping with one or more ToF sensors. The DK-CH201 includes one CH201 with the option to add up to four additional ultrasonic modules.
Easy-to-use module for rapid integration and evaluation of hardware designs. Different acoustic housings are available to adjust the field of view.
In a free downloadable white paper, TDK describes how tracking-solution providers can use Chirp's ultrasonic time-of-flight technology to measure when users come into contact and notify those who may have been exposed to SARS-COV-2 when an infection does occur. Chirp provides a complete sensor API and reference design to make it easy for solution providers to quickly incorporate ultrasonic range-finding technology into their tracking solutions. The complete hardware and software reference design combines Chirp ultrasonic solutions along with a BLE-enabled MCU, for a complete social distancing solution including contact tracing.
Main applications
User presence in home/building automation and personal electronics
Obstacle avoidance
Robotics and drones
Ultra-low power remote presence-sensing nodes
Augmented/Virtual reality and gaming
Gesture control
Liquid level sensing & shelf inventory monitoring
Main features and benefits
Ultra-low power
Works in any lighting condition
Detects objects of any color and optical transparency
Customizable field of view (FoV) up to 180°
Integrated 3.5mm x 3.5mm x 1.26mm Package
Low-power SoC firmware for ultrasonic processing in a wide range of usage cases
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