Inspection manner of measuring device, inspection manner and electronic scanning type ultrasonic survey instrument null of ultrasonic

摘要

PURPOSE:To judge the defective parts of a sensor and a receiving part quickly and simply by changing the connecting state of the sensor and the receiving part, and measuring the difference between the receiving strengths of the respective states. CONSTITUTION:For example, 64 ultrasonic piezoelectric transducers A1-A64. are arranged at the tip part 5 of an array probe 1. Each electrode is connected to each terminal of a plug 4P through a coaxial cable constituting a cable 3. Meanwhile, a receptacle 4R corresponding to the arrangement of the terminals of the plug 4P is provided at the front surface of a main body 3 of an apparatus. The receptacle is connected to the tranceiver circuit of the main body 2 of the apparatus. The arrangement of the terminals is made to be symmetrical on the right and left sides. The plug 4P is turned by 180 deg. as shown by arrows and can be connected in the inverted state up and down and right and left (inverse connection). For judging the defective parts of the ultrasonic piezoelectric transducer and the tranceiver circuit, the array probe is arranged so as to face a body under test in the regular connecting state, and the mode is switched to the inspecting mode. Only one a circuit RP and the piezoelectric transducer A are operated. The abnormal places at echo levels are sequentially detected. Then, the connection is inverted, and the cause is judged.