Magnetic liquid differential accelerometer based on diamond NV color center

Abstract

The invention provides a magnetic liquid differential accelerometer based on a diamond NV color center, belongs to the field of quantum sensing and quantum detection, and is mainly applied to the fields of aerial remote sensing, earth gravity detection, oil and gas reservoir detection, gravity tide observation, earth free nucleus nutation detection and the like. The accelerometer comprises a diamond NV color center fluorescence excitation and collection light path, a diamond NV color center probe device, an acceleration detection device and an auxiliary detection circuit, only one diamond NV color center fluorescence excitation and light path collection device is adopted, the magnetic fields of the two detection positions are judged through the double-optical-fiber probe, and the complexity and cost of the system are reduced. According to the designed acceleration detection device, the permanent magnet is suspended through the magnetic liquid, friction between the permanent magnet andthe side wall in the acceleration change process is avoided, and the detection precision and sensitivity of the system are improved.

Description

technical field [0001] The invention belongs to the field of quantum sensing and quantum detection, and specifically relates to a magnetic liquid differential accelerometer based on a diamond NV color center, which is mainly used in aerial remote sensing, earth gravity detection, oil and gas reservoir detection, gravity tide observation and earth free nuclear nutation detection and other fields. Background technique [0002] Accelerometers can not only be used in civil fields such as automobile anti-skid drive systems, anti-lock braking systems, airbag release control systems, car accident alarm systems, earthquake prediction, oil and gas reservoir detection, and ocean tide detection, but also can be used in drones without GPS Inertial navigation system, missile guidance and control, hypersonic vehicle detection and rocket detection and other military fields. In the acceleration detection involving the earth's gravitational field, the accelerometer is often required to be a...

AI Technical Summary

Problems solved by technology

[0006] Aiming at the problems existing in the prior art based on the diamond NV color center differential accelerometer using two diamond NV color center fluorescence excitation and readout circuits, resulting in high system complexity and high cost, the purpose of the present invention is to provide a Magnetic liquid differential accelerometer based on diamond NV color center

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