SU970270A1

SU970270A1 - Electrostatic field measuring device

Info

Publication number: SU970270A1
Application number: SU813243820A
Authority: SU
Inventors: Валерий Павлович Гордюк; Владимир Семенович Кубланов; Александр Александрович Мартынов; Борис Федорович Наконечный; Борис Иванович Судаков
Original assignee: Предприятие П/Я В-2654
Priority date: 1981-02-03
Filing date: 1981-02-03
Publication date: 1982-10-30

Description

Изобретение относится к технике электроизмерений и может использоваться для' измерения напряженности электростатического поля.The invention relates to techniques for electrical measurements and can be used to measure the strength of the electrostatic field.

Известно устройство для измерения электростатического поля, содержащее ⁵экранную пластину, установленную с возможностью осевого вращения, измерительную пластину, расположенную соосно с экранной пластиной и состоя10 щую из двух изолированных друг от друга секций, каждая из которых соединена с блоком регистрации L.1A device is known for measuring the electrostatic field, comprising a ⁵ screen plate mounted axially rotatable, a measuring plate located coaxially with the screen plate and consisting of two sections isolated from each other, each of which is connected to the recording unit L.1

Однако известное устройство имеет низкую точность измерений, так как невозможна его калибровка во время измерения.However, the known device has a low measurement accuracy, since it is impossible to calibrate during the measurement.

Цель изобретения - повышение точности измерений.The purpose of the invention is improving the accuracy of measurements.

Поставленная цель достигается тем, ₂₀что в устройстве к секциям измерительной пластины подключен генератор опорного сигнала, а секции измерительной пластины соединены через сумматор с входом управления коэффициентом передачи блока регистрации.The goal is achieved by the fact that the device ₂₀ to the measuring plate sections connected a reference signal generator, and the measuring section plates are connected via an adder to the input of the control unit transmitting the registration ratio.

На чертеже приведена структурная схема устройства.The drawing shows a structural diagram of the device.

Устройство для измерения электростатического поля содержит экранную пластину 1, измерительную пластину, состоящую из секций 2 и 3, генератор 4 опорного сигнала, блок 5 регистрации и сумматор 6.A device for measuring the electrostatic field contains a screen plate 1, a measuring plate consisting of sections 2 and 3, a reference signal generator 4, a recording unit 5 and an adder 6.

Устройство работает следующим образом.The device operates as follows.

Измеряемое электростатическое поле Е при вращении пластины 1 преобразуется в переменные сигналы на секциях 2 и 3. Равные по величине^- и сдвинутые по фазе на 18(Гэти сигналы регистрируются блоком 5. На выходе сумматора 6 эти сигналы дают нулевой сигнал. При подаче, на секции 2 и 3 калиброванного напряжения от генератора 4 на выходе сумматора 6 формируется сигнал, пропорциональный напряжению калибровки, с помощью которого изменяется величина коэффициента передачи блока 5. Изменение чувствительности в секциях 2 и 3 обуславливает изменение сигнала с выхода сумматора би, 5 соответственно, величину коэффициента передачи блока 5.When the plate 1 rotates, the measured electrostatic field E is converted into variable signals in sections 2 and 3. Equal in magnitude ^- and phase shifted by 18 (These signals are recorded by block 5. At the output of adder 6, these signals give a zero signal. When applied, to the section 2 and 3 of the calibrated voltage from the generator 4 at the output of the adder 6, a signal is generated proportional to the calibration voltage, with which the value of the transfer coefficient of block 5 is changed. A change in sensitivity in sections 2 and 3 causes a change in signal output of adder bi, 5, respectively, the magnitude of the gain unit 5.

Устройство обеспечивает более высокую точность измерений за счет стабилизации его чувствительности.The device provides higher measurement accuracy by stabilizing its sensitivity.

Claims

The invention relates to an electrical measurement technique and can be used to measure the strength of an electrostatic field. A device for measuring an electrostatic field is known, comprising a screen plate mounted for axial rotation, a measuring plate located coaxially with the screen plate and consisting of two sections isolated from each other, each of which is connected to a recording unit L.1.1 ° However, the known The device has a low measurement accuracy, since it is impossible to calibrate it during the measurement. The purpose of the invention is to improve the measurement accuracy. This goal is achieved by the fact that in the device a separate signal generator is connected to the sections of the measuring plate, and the sections of the measuring plate are connected via an adder to the INPUT of the transmission coefficient control of the recording unit. The drawing shows a block diagram of the device. The device for measuring the electrostatic field contains a screen plate 1, a measuring plate consisting of sections 2 and 3, a reference signal generator, a recording unit 5 and an adder 6. The device operates as follows. The measured electrostatic field E, when rotating the plate 1, is converted into alternating signals in sections 2 and 3. Equal in magnitude and out of phase, the signals are recorded by block 5. At the output of adder 6, these signals produce a zero signal. When applied to sections 2 and 3 of the calibrated voltage from generator k, the output of the adder 6 generates a signal proportional to the calibration voltage, by which the value of the transmission coefficient of the block 5 changes. The sensitivity change in sections 2 and 3 causes the signal to change from the output of the adder 6 and, accordingly, the value of the coefficient of the front block 5. The device provides a higher accuracy of measurements due to the stabilization of its sensitivity. Claims An electrostatic field measuring device comprising a screen plate, installed with axial rotation, a measuring plate located coaxially with the screen plate and consisting of two sections isolated from each other, each of which is connected to a recording unit. characterized in that, in order to improve the measurement accuracy, a reference signal generator is connected to the sections of the measuring plate, and the sections of the measuring plate are connected via an adder to the input of the transmission coefficient control of the recording unit. Sources of information taken into account during examination 1. USSR author's certificate. № 7 +6308, cl. G 01 R 29/12, 197 (prototype).