SU1392405A1

SU1392405A1 - Pressure pickup

Info

Publication number: SU1392405A1
Application number: SU864156399A
Authority: SU
Inventors: Юрий Викторович Чувыкин; Сергей Андреевич Козицын
Original assignee: Предприятие П/Я А-1891
Priority date: 1986-08-27
Filing date: 1986-08-27
Publication date: 1988-04-30

Description

(21)4156399/24-10(21) 4156399 / 24-10

(22)27.08.86(22) 08/27/86

(46) 30.04.88. Бюл. № 16(46) 04/30/88. Bul Number 16

(72) Ю.В. Чувыкин и С.А. Козицын(72) Yu.V. Chuvykin and S.A. Kozitsin

(53)531.787(088.8)(53) 531.787 (088.8)

(56)Авторское свидетельство СССР(56) USSR author's certificate

№ 935728, кл. G 01 L 9/08, 11.12.80,No. 935728, cl. G 01 L 9/08, 11.12.80,

Авторское свидетельство СССР № 675325, кл. G 01 L 9/08, 25.07.79,USSR Author's Certificate No. 675325, cl. G 01 L 9/08, 07.25.79,

(54)ДАТЧИК ДАВЛЕНИЯ(54) PRESSURE SENSOR

(57)Изобретение относитс к контрольно-измерительной технике и позвол ет повысить чувствительность устр-ва. В датчике пьезоэлемент 3(57) The invention relates to instrumentation engineering and makes it possible to increase the sensitivity of the device. In the sensor piezoelectric element 3

выполнен в виде свернутой в руЛон ленты из двух слоев 4 и 5 пьезомате- риала и размещен между основанием 6 и шайбой 7. В св зи с тем, что слой 4 опираетс на выступы спиральной канавки 8 основани 6, а слой 5 - на выступы аналогичной канавки 9 шайбы 7, внутри пьезоэлемента 3 возникает деформаци сдвига. Сигнал с пьезоэлемента 3, регистрируемый электроизмерительным прибором, характеризует измер емое давление, воздействующее на мембрану 2. Электроды 10 дл съема зар дов размещены на боковой части рулона. 2 ил.made in the form of a rolled-up tape of two layers 4 and 5 of the piezo-material and placed between the base 6 and the washer 7. In connection with the fact that layer 4 rests on the projections of the spiral groove 8 of the base 6, and layer 5 on the projections of grooves 9 of the washer 7, inside the piezoelectric element 3 shear deformation occurs. The signal from the piezoelectric element 3, recorded by an electrical measuring instrument, characterizes the measured pressure acting on the membrane 2. Electrodes 10 for removing charges are placed on the side of the coil. 2 Il.

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ВНИШШ Заказ 1883/45 Тираж 847VNISHSh Order 1883/45 Circulation 847

Произв.-полигр. пр-тие, г. Ужгород, ул. Проектна , 4Random polygons pr-tie, Uzhgorod, st. Project, 4

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Claims

Claim

A pressure sensor comprising a housing with a membrane and a base, as well as a piezoelectric element with electrodes for charge collection located on the base, made in the form of a rolled up tape consisting of two layers of piezomaterial polarized in thickness and contacting surfaces having the same polarity, with each layer the piezomaterial is coated on both sides with conductive layers, characterized in that, in order to increase sensitivity, a washer installed between the membrane and the end of the piezoelectric element from the first spiral a rectangular groove of the rectangular section facing the side of the piezoelectric element, and at the base there is a second spiral groove of the rectangular section, the protrusions of which are located opposite the depressions of the first groove, the piezoelectric element being installed on the base so that the inner layer of the roll tape is located on the protrusions of the base formed by the second spiral groove and the outer layer of the roll tape is located on the protrusions of the washer formed by the first spiral groove, while the electrodes for charge collection are attached to the side of the roll cients.

VNIIIPI Order 1883/45 Circulation 84 7 __________ Subscription

Custom polygr. ave, city of Uzhhorod, st. Project, 4