The document describes an ultrasonic distance alarm system designed using a Texas Instruments MSP430F449 microcontroller and TCT40-16F ultrasonic sensor. The system uses the MJ echo capture method to accurately measure distances in real-time and display them on an LCD screen. It also sounds an alarm when distances fall below a set value. Temperature compensation via a sensor further improves accuracy. Experimental results demonstrated the system's high accuracy for distance measuring tasks in vehicles.
