MB7139-721

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Ultrasonic sensors provide non-contact detection of objects and measure distances, surfaces and displacement. The MB7139-721 Ultrasonic receiver and transmitter are one of a series of similar devices which offer reliable performance in a small and low power package making them well suited for embedded applications.

The MB7139-721 device combines an ultrasonic transmitter and receiver in a single module, allowing it to transmit and receive data around a corner, avoiding obstacles. This allows for its use in a variety of applications such as: object detection, obstacle detection, wall following and wall mapping. It is also ideal for use in automation, robotics and navigation applications.

The transmitter on the MB7139-721 is based on an Electromagnetic Oscillator (EMO) which produces an ultrasonic signal at a frequency of 40kHz. The ultrasonic signal is sent out as an acoustic wave through a transmitting element which is connected to the device. The receiving element is also connected to the device and is used to detect the echo of the transmitted wave. The received signal is then used to calculate the distance between the two points.

The MB7139-721 has a low power consumption of only 1 Watt, making it suitable for use in battery operated systems. It also features a fast response time of 25µs, allowing it to quickly detect objects. The device is housed in a small package with dimensions of 32x20x14mm, making it easy to integrate into even the most confined spaces.

By combining an ultrasonic receiver and transmitter into a single module, the MB7139-721 provides a cost effective and reliable solution for ultrasonic sensing. With its low cost, small size and low power consumption, it can be used in a range of applications, making it a highly versatile device.

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