2024-03-28T13:13:59Z
https://niigata-u.repo.nii.ac.jp/oai
oai:niigata-u.repo.nii.ac.jp:00003881
2022-12-15T03:36:54Z
423:424:425
453:454
Detecting Method of Number of Sheets by Using Sound
音響を利用したシートの枚数検出法
音響を利用したシートの枚数検出法
坂本, 秀一
45944
一宮, 亮一
45945
太田, 雄三
45946
Sound
Sensor
Measurement
Number of Sheets
Noncontact
Frequency Response
This paper deals with the development of a new detecting method of a number of sheets without contact. For example, in a cash dispenser paper sheets are transferred one by one and counted synchronously. So it is necessary to detect one or a plural number of sheets to avoid mistransferring. Hitherto, the contact measuring method has been used for detecting the transference of sheets. This noncontact sensor utilizes the variations of frequency response of the whole acoustic system of the sensor with sheets which are set near the sensor. The impedance of sheets varies with its number. The number of sheets has shown good correspondence with the resonant frequency and frequency response of the acoustic system. An electrical analogy is adopted for theoretical analysis of the acoustic system. The results of the calculation and experiments coincide significantly. It is possible to detect the number of sheets within a very short time period by means of variations of the frequency response.
journal article
日本機械学会
1993-03
application/pdf
日本機械学会論文集. C編
559
59
819
826
日本機械学会論文集. C編
AN00187463
03875024
https://niigata-u.repo.nii.ac.jp/record/3881/files/9_0095.pdf
jpn
http://ci.nii.ac.jp/naid/110002380933
日本機械学会
本文データは学会の許諾に基づくCiNiiからの複製である