| 摘要 |
PURPOSE: A hydrogen detection sensor with an ultrasound movable unit which is length-adjustable and detachable is provided to install a sensor unit receiving ultrasonic signals to a piezoelectric element detachably, thereby improving user convenience. CONSTITUTION: A hydrogen detection sensor(100) with an ultrasound movable unit(130) which is length-adjustable and detachable comprises an electric signal device(110), a piezoelectric element(120), and an ultrasound moving distance adjusting unit(140). The electric signal device generates and detects electric signals. The piezoelectric element is connected to the electric signal device, thereby generating ultrasonic waves when the electric signals are applied. The ultrasound movable unit is connected to the piezoelectric element. A hydrogen sensitive material is spread on one surface of the ultrasound movable unit. The ultrasound moving distance adjusting unit is connected to one end of the piezoelectric element. [Reference numerals] (110) Electric signal device; (120) Piezoelectric element; (130) Ultrasound movable unit; (140) Ultrasound moving distance adjusting unit |
