JPH03119760U

JPH03119760U -

Info

Publication number: JPH03119760U
Application number: JP2867790U
Authority: JP
Priority date: 1990-03-20
Filing date: 1990-03-20
Publication date: 1991-12-10

Description

[Brief explanation of drawings]

第１図は本考案実施例の構成を示す図。第２図
は一対の音響電気変換素子が備えられた場合の平
面図。第３図ａ，ｂ，ｃ，ｄは本考案実施例にお
ける検出波形の例を示す図。第４図および第５図
は従来例の構成を示す図。１，１′……紙力計用超音波受信器、２，２′
……接紙端、３，３′，３Ａ，３Ｂ……音響電気
変換素子、４……アルミバラスト、５……増幅器
、６……アルミブロツク、１０……被測定紙。 FIG. 1 is a diagram showing the configuration of an embodiment of the present invention. FIG. 2 is a plan view of a case where a pair of acoustoelectric transducers are provided. FIGS. 3a, b, c, and d are diagrams showing examples of detected waveforms in the embodiment of the present invention. FIG. 4 and FIG. 5 are diagrams showing the configuration of a conventional example. 1, 1'...Ultrasonic receiver for paper strength meter, 2, 2'
... Paper contact end, 3, 3', 3A, 3B ... Acoustoelectric transducer, 4 ... Aluminum ballast, 5 ... Amplifier, 6 ... Aluminum block, 10 ... Paper to be measured.

Claims

[Claims for Utility Model Registration] A paper-contacting end in contact with the paper surface to be measured, an acousto-electric transducer that converts the ultrasonic waves received at the paper-touching end into an electrical signal, and an amplifier that amplifies the electrical signal. An ultrasonic receiver for a paper dynamometer, comprising: a quadrangular prism-shaped block that is continuous with the paper end and has a central axis in a direction substantially perpendicular to the surface of the paper to be measured; and at least four acoustoelectric transducers. and one amplifier is attached to each side of the quadrangular prism-shaped block, and there are two amplifiers, and each of the four acoustoelectric transducers has a value corresponding to the difference in output for each pair facing each other. An ultrasonic receiver for a paper force meter, characterized in that the two amplifiers are connected so as to appear at their outputs.