SU568072A1

SU568072A1 - Device for measuring the tension of magnetic tape record carrier

Info

Publication number: SU568072A1
Application number: SU7602340640A
Authority: SU
Inventors: Пятрас-Бенито Пятро Гудавичюс; Аполинарас Казио Куртинайтис; Казимерас Миколо Рагульскис
Original assignee: Каунасский Политехнический Институт Им. Антанаса Снечкуса
Priority date: 1976-04-01
Filing date: 1976-04-01
Publication date: 1977-08-05

Description

. .I. .I

Изобретение относитс к области прибо ростроени и может быть кспользовано при ивладке аппарйтуры м1агнитной записи.The invention relates to the field of instrumentation and can be used when setting up a magnetic recording apparatus.

Известно устройство дл измерени нат жени магнитной ленты, содержащее возбу-. g дитепь колебаний в датчик соединенный с усипитепем, распопожешшш по обе стороны магнитной ленты 1.A device for measuring the tension of a magnetic tape containing excitability is known. g oscillation in the sensor connected to the adapter, located on both sides of the magnetic tape 1.

. Известно также устройство дпл измерени нат жени ленточного мапштного носи ю тел .записи, содержащее фотопреобразователЬз подключенный к усшгатешо, и бпок Бычисле™ни 2. Недостатком известных устройств вл етс 1шзка точность измерений.. It is also known that a device for measuring the tension of a tape map carrier of a recording body, containing a photoconverter connected to the ground, and a batch Bychisle ™ 2 is not known. A disadvantage of the known devices is the accuracy of measurements.

Цель изобретени повыше1те точности is измерений. Это достигаетс снабжет1ем устройсгва соединенными носледовательно блоком формировани и преобразоват-елем эдехтрических колебаний в механические и срв. диненными нсюледовательно пьезокерамичес- 20 КИМ датчиком, дополнитель.ным усилителем и амплитудным детектором, причем преобразо ватель прикреплен к пьезокерамическоьгу: датчику , а атлплитудньтй детектор подключен к блоку вычислени ..25The purpose of the invention is to increase the accuracy of measurements. This is achieved by supplying the device with the contiguous formation of the unit and the converter of the edechtric oscillations into mechanical and svv. In general, the piezoceramic 20 CMM sensor, additional amplifier and amplitude detector are connected to the piezo ceramic: sensor, and the high-performance detector is connected to the calculation unit .. 25

На чертежеизобрйжено устройство измерени нат жени ленточного магнитнсугдThe drawing shows a device for measuring the tension of a tape magnet

носител .записи.media. Record.

В неносредствешой близости от Ленточно го магнитного носител 1 записи установпен фотопреобразователь 2, подключенный через усилитель 3 к блоку формировани 4, который соединэ с генератором колебаний, выполненным , нагф1 мбр, в виде-: ньвзокерамйчв кой плаетшш 5, прикрепленной к пьеаокера гавческому датчику 6. Послед1Шй, подкиючва через дот1Олнй. усилитель 7 и-вмпии туд}тый„ детектор 8 к блоку вычислени 9.A photoconverter 2 is installed in the immediate vicinity of the tape magnetic carrier 1, connected through an amplifier 3 to a forming unit 4, which is connected to an oscillator, made, fucking mile 6, to the sensor 6. Last, podkiyuchva through dot1Olny. amplifier 7 and impulse detector 8 to the calculation unit 9.

Claims

The device works as follows. When carrier 1 moves in it, transverse parametric oscillations arise in it. Photographic inverter 2 converts transverse oscillations of magnetic carrier 1 into an electrical signal, from which, after being amplified by amplifier 3, formation unit 4 forms ictulses whose frequency coincides with the frequency of natural transverse oscillations of carrier 1. These pulses are applied to imaCTHHe G, which begins to vibrate at a frequency equal to the frequency of its own transverse oscillating nose 1 .. Since 1c plate 3 prshrash vd @ rtchkk 6, then with a stake & ceramic flooring in sensor 6; The electronic control panel, which is inserted into the amplitude decector 6, is fed to the amplitude decider 7V. The block received from sensor 6 shows the oscillating oscillation frequency. 5 oscillations frequency of which varies with the frequency of its own transverse oscillations of magnetic carrier 1, as the frequency of its own transverse flexible carrier magnetic recording signals from the tension of the magnetic carrier it is a variable signal after amplifying the deoeuvre of 8 magnetic force from the tension of the magnetic cositizer 1. This signal is received by an oh who is overwhelmed by the color of his tension. The device (measurement times / accuracy of measurement / formula of the image) is a device for measuring the tension of the left-hand accurate magnetic recording medium containing a phototransducer connected to the amplifier, and a calculating unit characterized in that it is equipped with : made by a subsequent forming unit and a transducer of electrical oscillations "mechanical, as well as connected in series by a piezoceramic sensor, an additional amplifier and amplitude 1m detector | 1, | features n The oscillator transducer is attached to a piezoceramic sensor, and the amplitude detector is connected to a computation unit. Sources of information taken into account in the examination: i: US Patent No. ZZJ4587, CL 73-143, 1872.

2. USSR author's certificate N 444956, class, t 11 B 5/00, 1973.