SU649946A1

SU649946A1 - Deformation measuring arrangement

Info

Publication number: SU649946A1
Application number: SU772538057A
Authority: SU
Inventors: Борис Кириллович Куприк; Анатолий Иванович Двойниченко; Владимир Львович Склярский
Original assignee: Предприятие П/Я А-7332
Priority date: 1977-10-25
Filing date: 1977-10-25
Publication date: 1979-02-28

Description

33

С тензоусилител 3 на полумосты 1, 2 подаетс питание. Разбаланс моста, вызванный колебани ми деформации, усиливаетс и подаетс на определитель 4 момента экстремума, который в момент экстремума деформации запускает источник 5 питани . Импульс питани суммируетс с посто нным питанием полумостов 1, 2, 8, 9. Увеличение питани полумостов 1, 2, 8, 9 увеличивает выходное напр жение измерительного полумоста 1, которое подаетс на нуль-органы 10, 11, выдающие сигналы на регистратор 12 при превышении (уменьшении ) задаиных полумостами 9 уровней деформации (нагрузки).Power is supplied from the strain amplifier 3 to the half bridges 1, 2. The imbalance of the bridge, caused by the deformation fluctuations, is amplified and supplied to the determinant 4 of the extremum moment, which, at the moment of the deformation extremum, triggers the power supply 5. The power pulse is summed with the constant power of half-bridges 1, 2, 8, 9. Increasing the power of half-bridges 1, 2, 8, 9 increases the output voltage of the measuring half-bridge 1, which is applied to the zero-bodies 10, 11, which emit signals to the recorder 12 at exceeding (decreasing) 9 levels of deformation (load) by half bridges.

Дл измерени деформаций (нагрузок) в разных точках конструкций одни входы нуль-органов 10, 11 подключаютс к дополнительным измерительным полумостам 6, 7, которые кле тс в указанных точках. Питание дополнительных измерительных полумостов 6, 7 осуществл етс от источника 5 питани , что повышает чувствительность устройства.To measure the deformations (loads) at different points of the structures, the same inputs of the zero-organs 10, 11 are connected to the additional measuring half-bridges 6, 7, which are glued at the indicated points. The power of the additional half-bridges 6, 7 is supplied from the power source 5, which increases the sensitivity of the device.

Таким образом, чувствительность измерительного полумоста 1 повышаетс подачей импульсного питани в момент, который фиксируетс определителем 4 момента экстремума . Повышение чувствительности тензомоста позвол ет повысить точность измерени , а возможность установки дополнительных измерительных 6, 7 и подстроечных 8, 9 полумостов в разных точках контролируемой конструкции расшир ет функциональные возможности устройства.Thus, the sensitivity of the measuring half-bridge 1 is increased by applying pulsed power at the moment, which is fixed by the determinant 4 of the moment of extremum. Increasing the sensitivity of the strain gauge makes it possible to increase the measurement accuracy, and the possibility of installing additional measuring 6, 7 and trimming 8, 9 half bridges at different points of the monitored design expands the functionality of the device.

Claims

Invention Formula

A device for measuring deformations, containing measuring and trimming half-bridges, to the output of which a strain amplifier, a power source, is connected

included in the half-bridge power supply circuit, and a recorder, characterized in that, in order to increase the measurement accuracy, it is equipped with additional measuring and trimming half-bridges,

additional zero-organs and the determinant of the moment of the extremum, the output of the strain amplifier is connected through the determinant of the moment of the extremum to the input of the power source, the output of which is sequentially

The additional measuring and trimming half-bridges are connected to the power supply circuit; one input of the zero-organs is connected with the middle points of the additional measuring half-bridges, the other with the middle points of the additional trimming half-bridges, and the output is connected to the recorder.

Sources of information taken into account in the examination 1 USSR author's certificate

486231, cl. G 01M 5/00, 1974.

2. USSR author's certificate number 429260, cl. G 01B 7/16, 1972.

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