Now to a summary of the basic operation of the ultrasonic distance sensor: A pulse of at least 10us is applied to the Trig pin of the module. This will automatically generate 8 drive pulses at 40kHz.

If you have one ultrasonic sensor and a microcontroller, you can detect plenty of useful things, like the water level in a rain barrel or the distance traveled by a tablet along a rail.

This is an Arduino-based Proximity Sensor circuit wired using the popular HC-SR04 Ultrasonic ranging module,used here for non-contact object detection purpose. The HC-SR04 module includes ultrasonic ...

Conamara’s flat frequency response throughout the ultrasonic range enables accurate ranging and proximity detection. Compact and Energy-Efficient: At 5mm ⌀ and 1.5mm thick, the module meets ...

Initial experiments centered around the ubiquitous dual-transducer ultrasonic modules used in all sorts ... To make the simple range sensor more radar-like, [Dzl] needed to narrow the beamwidth ...

The sensors work together in combination with cameras, RADAR — and other safety-centric modules — on basic ... to have a "dead period" between ultrasonic sensor pulses (emit/receive) observed — not ...

It supports sensors in the 40- to 70-kHz range. (Courtesy of Texas Instruments) Figure 1 shows the chip in an ultrasonic module. A transformer is used to connect to the ultrasonic piezoelectric ...

Similarly, IR proximity and IR ToF sensors consume high levels of power ... Chirp has several small form factor ultrasonic modules with varying fields of views to accelerate evaluation and ...