Ultrasonic sensor for capturing value documents and method for manufacturing the same

摘要

An ultrasonic sensor and method for using the same are arranged for capturing a value document transported through a capture region of the ultrasonic sensor. The ultrasonic sensor has an ultrasound transmitter arranged for emitting ultrasound into the capture region and an ultrasound receiver arranged for receiving ultrasound from the ultrasound transmitter from the capture region. A control and evaluation circuit is arranged for controlling the ultrasound transmitter and for capturing and evaluating the signals of the ultrasound receiver. A circuit carrier carries the control and evaluation circuit, the ultrasound transmitter, the ultrasound receiver, and conducting paths electrically connecting the control and evaluation circuit to the first and second ultrasonic transducers. The circuit carrier has a U-shaped configuration and two interconnected arm portions, and the ultrasound transmitter is held on one of the two arm portions and the ultrasound receiver on the other of the two arm portions.

主权项

1. An ultrasonic sensor for capturing a value document transported through a capture region of the ultrasonic sensor, comprising:
first and second ultrasonic transducers including an ultrasound transmitter and an ultrasound receiver arranged so that ultrasound is emittable by the ultrasound transmitter into the capture region and the ultrasound transmitter's ultrasound coming from the capture region is receivable by the ultrasound receiver; a control and evaluation circuit for controlling the ultrasound transmitter and for capturing and evaluating signals of the ultrasound receiver, and a circuit carrier on which the control and evaluation circuit, the ultrasound transmitter, the ultrasound receiver, and conducting paths electrically connecting the control and evaluation circuit to the first and second ultrasonic transducers are held, the ultrasound transmitter and the ultrasound receiver being held on the same circuit carrier, the circuit carrier being of U-shaped configuration and having two interconnected arm portions; and wherein the ultrasound transmitter is held on one of the two arm portions and the ultrasound receiver on the other of the two arm portions, and wherein the circuit carrier is a printed board.