SU387298A1 - DEVICE FOR MEASURING ELECTRIC POWER - Google Patents

DEVICE FOR MEASURING ELECTRIC POWER

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Publication number
SU387298A1
SU387298A1 SU1613099A SU1613099A SU387298A1 SU 387298 A1 SU387298 A1 SU 387298A1 SU 1613099 A SU1613099 A SU 1613099A SU 1613099 A SU1613099 A SU 1613099A SU 387298 A1 SU387298 A1 SU 387298A1
Authority
SU
USSR - Soviet Union
Prior art keywords
electric power
hall
measuring electric
circuit
hall sensor
Prior art date
Application number
SU1613099A
Other languages
Russian (ru)
Inventor
В. Нечипуренко В.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed filed Critical
Priority to SU1613099A priority Critical patent/SU387298A1/en
Application granted granted Critical
Publication of SU387298A1 publication Critical patent/SU387298A1/en

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Description

1one

Изобретение касаетс  измерени  электрических величин, а именно измерени  мощности с помощью датчика Холла.The invention relates to the measurement of electrical quantities, namely the measurement of power using a Hall sensor.

Известны устройства дл  измерени  мощности на датчиках. Холла, в которых холловска  цепь замкнута накоротко. В них датчик Холла включен в нлечо мостовой схемы, одна диагональ которой подключена к милливольтметру , отградуированному в единицах мощности , а друга  включена в цепь измер емого тока. Датчик Холла, который используетс  в качестве магнитосопротивлени , находитс  в магнитном поле, пропорциональном напр жению измер емой цепи. Известное устройство имеет невысокую чувствительность и небольшую мощность полезного сигнала.Devices are known for measuring power at the sensors. Hall, in which Hall's chain is short-circuited. In them, the Hall sensor is included in the length of a bridge circuit, one diagonal of which is connected to a millivoltmeter calibrated in units of power, and the other is connected to the circuit of the measured current. The Hall sensor, which is used as a magnetoresistance, is in a magnetic field proportional to the voltage of the circuit being measured. The known device has a low sensitivity and low power of the useful signal.

Дл  повыщени  чувствительности предлагаемое устройство снабжено трансформатором , первична  обмотка которого включена последовательно с нагрузкой, а вторична  подключена к холловским электродам датчика .To increase sensitivity, the proposed device is equipped with a transformer, the primary winding of which is connected in series with the load, and the secondary is connected to the Hall electrodes of the sensor.

На чертеже представлена принципиальна  схема предлагаемого устройства.The drawing shows a schematic diagram of the proposed device.

Устройство содержит резисторы 1, 2, 3 и датчик Холла 4, образующие мост, диагональ которого включена в измер емую цепь. Во второй диагонали милливольтметром 5 измер етс  напр жение выходного сигнала. Датчик Холла находитс  в поле катушки 6,The device contains resistors 1, 2, 3 and Hall sensor 4, forming a bridge, the diagonal of which is included in the measured circuit. In the second diagonal, the voltage of the output signal is measured by a millivoltmeter 5. The Hall sensor is in the field of coil 6,

подсоединенной параллельно в измер емую цепь. К холлоБСКой цепи подключена вторична  обмотка токового трансформатора 7. Магнитное поле катушки 8 служит дл  выведени  рабочей точки датчика в нужный участок ха|рактеристики.connected in parallel to the circuit being measured. The secondary winding of the current transformer 7 is connected to the HLOBBACK circuit. The magnetic field of the coil 8 serves to bring the operating point of the sensor to the desired portion of the characteristic.

При измерении мощности напр жени  на датчике Холла мен етс  в зависимости от пол  катушки 6 и тока, текущего по мосту. ВWhen measuring the power of the voltage on the Hall sensor varies depending on the field of coil 6 and the current flowing through the bridge. AT

среднем за период это изменение даетthe average for the period this change gives

и. aUIcos-f,and. aUIcos-f,

где ф - угол сдвига фаз между током и напр жением;where f is the phase angle between current and voltage;

а - коэффициент пропорциональности. Эффект сильного изменени  сопротивлени  датчика Холла достигаетс  не только за счет закорачивани  э. д.с Холла через сопротивление обмотки трансформатора, но и за счет введени  сигнала в холловскую цепь от источника (в данном случае трансформатора 6), пропорционального току нагрузки.a - coefficient of proportionality. The effect of a strong change in the resistance of the Hall sensor is achieved not only by shorting e. the Hall through the resistance of the transformer winding, but also by introducing a signal into the Hall circuit from a source (in this case, transformer 6) proportional to the load current.

Предмет изобретени Subject invention

Устройство дл  измерени  электрической мощности, содержащее датчик Холла, помещенный в магнитное поле, пропорциональное 30 Напр жению нагрузки, и включенный в плечоAn apparatus for measuring electrical power, comprising a Hall sensor placed in a magnetic field proportional to 30 Stress and included in the arm

моста, питаемого током нагрузки, отличающеес  тем, что, с целью повышени  чувствительности , оно снабжено трансформатором,A bridge powered by a load current, characterized in that, in order to increase the sensitivity, it is equipped with a transformer,

первична  обмотка которого включена последовательно с нагрузкой, а вторична  подключена к ХОЛЛОВСК1ИМ электродам датчика.The primary winding of which is connected in series with the load, and the secondary winding is connected to the HOLLOVSKIM electrode of the sensor.

пP

SU1613099A 1971-01-20 1971-01-20 DEVICE FOR MEASURING ELECTRIC POWER SU387298A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SU1613099A SU387298A1 (en) 1971-01-20 1971-01-20 DEVICE FOR MEASURING ELECTRIC POWER

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SU1613099A SU387298A1 (en) 1971-01-20 1971-01-20 DEVICE FOR MEASURING ELECTRIC POWER

Publications (1)

Publication Number Publication Date
SU387298A1 true SU387298A1 (en) 1973-06-21

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
SU1613099A SU387298A1 (en) 1971-01-20 1971-01-20 DEVICE FOR MEASURING ELECTRIC POWER

Country Status (1)

Country Link
SU (1) SU387298A1 (en)

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