Ultrasonic Sensor Module

Compact and robust ultrasonic sensor module

The compact ultrasonic sensor module detects objects using ultrasonic waves, which are transmitted and received with only one piezoelectric disc. Here, an integrated driver and signal processor is used for signal generation and processing. The very compact design transforms the ultrasonic sensor module into a highly robust and versatile component with excellent EMC characteristics, which thanks to the solid aluminum housing is also protected against dust and splash water. As such, it is ideally suitable for numerous industrial applications and applications in harsh environments.

(Note: The housing color was changed from black to silver.)

Benefits

Mechanical and electrical robustness

Very compact dimensions
Aluminum housing enables stable structure
Dust and splash water protected due to closed membrane
High electromagnetic compatibility

Characteristics and features

Emitting and receiving of ultrasonic waves with only one single piezoelectric disc
Transducer including intelligent integrated controller in one module
Measuring range 12 cm to 200 cm
Field of view 60°
Low average power consumption of 5.5 mA @ 12 V supply voltage
Digital IO interface

Advanced ASIC technology integrated

Advanced signal processing
Near field detection
Noise suppression
Programmable settings adjustable by customer
- Pre-programmed EEPROM
- Additional internal RAM for customer use

Basic working principle of measurement

Time-of-flight sensor (in air) according

d=½·tof·c_AIR

d: distance | tof: time-of-flight | c_AIR: sound velocity in air
Integrated driver and signal processor controls piezo disk and calculates time of flight
Piezo disks emits and receives ultrasound waves
Time of flight signal to External Control Unit by Digital bidirectional IO
Distance calculated by ECU

Comparison to existing ultrasonic sensors

	Conventional Ultrasonic Sensor	Transducer + ASIC	TDK Ultrasonic Sensor Module
Driver integrated	✔	✗	✔	Fully integrated device
Parameter setting (EEPROM)	✗	Product depending	✔	Re-programmable by user
Volume [mm³]	>10,000	>2,100 *	1290	Smaller
Weight [g]	~ 8 to 10	10 to 20 *	2.3	Lighter
Protection class	Sensitive to dust and water	Product depending	Dust and water protected	More reliable
Integration effort	Low	High	Low	Optimized driver and transducer performance

* Estimated values from technical comparable products available in the market

Applications

Voice over product presentation

(Note: The housing color was changed from black to silver.)

Get data sheets

	PDF	Diameter (mm)	Thickness (mm)	Capacitance (pF)	Serial resonance frequency (kHz)	Type
		15	13	---	75	X150P0754

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Product resources

Installation information