Absorption chamber exciting device capable of automatically reducing power consumption

Abstract

The invention relates to an absorption chamber exciting device capable of automatically reducing the power consumption. A storage battery is respectively connected with a driving circuit, a power circuit and a biasing circuit, the driving circuit is connected with the driving circuit through the power circuit, a high-frequency oscillating circuit, an absorption chamber, a photosensitive element, a photoelectric conversion circuit, an A / D (analog to digital) conversion circuit, a microcontroller and a voltage division circuit, the power circuit is connected with the voltage division circuit 4, and the biasing circuit is connected with the high-frequency oscillating circuit. A single storage battery supplies power so that the size and the weight of the whole device are reduced. After the absorption chamber exciting device is electrified, the absorption chamber is automatically lightened without needing of high-voltage excitation of a Tesla coil through electrodeless discharge, and the interference of high-voltage pulse on a signal detection circuit is prevented. Through feedback control circuits, the output voltage of a direct-current power supply is automatically regulated, the power consumption of the whole circuit is reduced to the minimum, and the service life of the absorption chamber is prolonged. The structure of a whole circuit is simple, the cost is low, impedance matching among circuits and between each circuit and a load is not needed, and a complex matching debugging process is effectively avoided.

Description

technical field [0001] The invention relates to the field of magnetic field measurement of a helium optical pump magnetometer, in particular to an excitation device for an absorption chamber that can automatically reduce power consumption. Background technique [0002] Optically pumped magnetometers are mainly used in aviation detection, ocean detection and space detection. It is based on the Zeeman effect of atoms with a certain magnetic moment in an external magnetic field, and is developed using optical pumping technology and magnetic resonance technology. The working state of the absorption chamber in the optically pumped magnetic sensor directly affects the performance and quality of the entire instrument. According to quantum physics, the atoms in the absorption chamber are in the ground state under normal conditions, and the total magnetic moment of the atoms is zero, which cannot be applied to the magnetic field measurement. When an external excitation source is ap...

AI Technical Summary

Problems solved by technology

The power supply of this circuit needs to use transformers, rectifier bridges and filter circuits to convert AC into DC, and then supply power to the oscillation circuit. Although the circuit form is simple, the overall circuit size and weight are large, and AC input is required, which lacks flexibility.

[0006] "Solid-state frequency oscillator for optogalvanic spectroscopy: Detection of nitirc oxide using the 2-0overtone transition" uses H-type discharge to excite the excitation device of the absorption chamber, they need to manually generate high-voltage pulses with the help of Tesla coils to assist in lighting the absorption chamber, which may cause Cause the follow-up detection circuit to be disturbed or even damaged

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