Murata to commercialize ultrasonic sensor for ADAS with 15cm close detection range-EEWORLD

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Murata Manufacturing Co., Ltd. (hereinafter referred to as "Murata") has developed the "MA48CF15-7N" (hereinafter referred to as "this product"), a waterproof ultrasonic sensor for ADAS (Advanced Driver Assistance System) with a detection distance of 15 to 550 cm . Mass production has now begun.

Murata's ultrasonic sensor products for ADAS can achieve close-range detection of 15 cm.

As the accuracy of ADAS has become higher in recent years, higher detection performance requirements have been placed on obstacle detection systems used for automatic braking and automatic parking. Ultrasonic sensors equipped in obstacle detection systems need to have high detection accuracy in both short and long distances, and small tolerances in resonant frequency and electrostatic capacitance to stabilize accuracy.

Murata's conventional products (MA55AF15 series) have a detection range of 30 to 500 cm, but this product can detect short and long distances of 15 to 550 cm by optimizing materials and structural design. At the same time, the tolerance of the resonance frequency and electrostatic capacitance has been reduced by 50% (1) compared to conventional products. In addition, by lowering the Q (2) of the sensor and standardizing the Q tolerance, the frequency bandwidth is made constant, making it easier to support pulse compression ICs that have become mainstream in recent years.

(1) Comparison with conventional products (MA55AF15 series).

(2) Q value: A value indicating the sharpness of frequency characteristics.

Murata will continue to develop ultrasonic sensor products that meet market needs and contribute to the advancement of ADAS.

Main Features

Improved short-range and long-range detection performance: Short-range and long-range detection of 15 to 550 cm can be performed, which helps to improve the accuracy of obstacle detection.

Stabilize detection accuracy by reducing the tolerance of resonance frequency and electrostatic capacitance: Compared with conventional products, the tolerance of resonance frequency and electrostatic capacitance has been reduced by 50%, reducing individual differences in detection accuracy.

Improving usability in the manufacturing process by lowering Q and standardizing Q tolerance: In order to support pulse compression ICs, circuit matching is made easier by lowering Q and standardizing Q tolerance. (Also, lowering Q also helps improve temperature characteristics)

Main Specifications

Main Application

Automatic braking system and automatic parking system in ADAS

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