Fragment multi-parameter testing device and method based on regional PVDF (Polyvinylidene Fluoride) piezoelectric film

• Main Authors: SONG PING, WANG XUANQUAN
• Format: Patent
• Language: Chinese; English
• Published: 05.02.2019
• Subjects: ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVEREDIN A SINGLE OTHER SUBCLASS; MEASURING; MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR; PHYSICS; TARIFF METERING APPARATUS; TESTING

The invention discloses a fragment multi-parameter testing device and method based on a regional PVDF (Polyvinylidene Fluoride) piezoelectric film. The testing device comprises a first regional PVDF piezoelectric film, a second regional PVDF piezoelectric film, a signal collection module and an upper computer, wherein a set distance is formed between the first regional PVDF piezoelectric film andthe second regional PVDF piezoelectric film; the two piezoelectric films independently consist of a plurality of piezoelectric measurement units formed by regional division; the input end of the signal collection module is independently connected with the first regional PVDF piezoelectric film and the second regional PVDF piezoelectric film; the output end of the signal collection module is connected with the upper computer; the upper computer obtains fragment speed according to time and set distance for a fragment to pass through the first regional PVDF piezoelectric film and the second regional PVDF piezoelectric fi