3 results about "Diamagnetic levitation" patented technology

This invention relates to the field of gravity measurement, aiming to provide a small-sized, high-precision gravimeter based on the principle of antimagnetic levitation. The gravimeter includes a low-frequency magnetic potential trap unit, a levitation oscillator unit, a displacement detection unit, and a cavity enclosure unit. The lens groups of the low-frequency magnetic potential trap unit, the levitation oscillator unit, and the displacement detection unit are all located in the cavity of the innermost insulated shell. This invention provides a measurement environment free from external influences for displacement detection of the levitation oscillator, counteracts adjustments to the vertical frequency in the antimagnetic levitation potential trap, and uses a photoelectric converter to measure voltage fluctuations caused by changes in laser intensity to reflect the motion of the object under test, achieving high-precision gravity measurement. The oscillator uses magnetic levitation and does not have mechanical contact with the environment, avoiding long-term irreversible deformation. It eliminates the need for bulky temperature control and magnetic shielding devices or other auxiliary equipment; therefore, the overall size of the gravimeter is small, easy to move, and inexpensive, facilitating widespread adoption.

An underwater all-optical six-axis force sensor based on an anti-magnetic suspension principle comprises a low-frequency magnetic potential well unit, a suspension mechanical oscillator unit and a displacement detection unit, and the low-frequency magnetic potential well unit suspends and binds the suspension mechanical oscillator unit in a water medium based on the anti-magnetic suspension principle. The stress motion displacement of the suspension mechanical vibrator unit is converted into a light intensity signal through the displacement detection unit, a stress result is obtained through corresponding calculation, and force sensing is achieved. The force sensor is a suspension oscillator without physical contact, the detection mode is all-optical signal detection based on optical fiber without physical contact, and the force sensor can be directly placed in a water medium to carry out force signal measurement. Compared with an optical fiber underwater acoustic sensor, the anti-magnetic levitation force sensor adopted in the scheme has the advantages of being simple in structure and low in system noise, six-axis force signal measurement can be achieved through a single levitation oscillator, and higher low-frequency underwater acoustic detection sensitivity is achieved.

The application discloses an underwater all-optical six-axis force sensor based on the anti-magnetic suspension principle, which comprises a low-frequency magnetic potential well unit, a suspended mechanical oscillator unit and a displacement detection unit. The low-frequency magnetic potential well unit suspends the suspended mechanical oscillator unit in the water medium based on the anti-magnetic suspension principle. The force movement displacement of the suspended mechanical oscillator unit is converted into an optical intensity signal by the displacement detection unit, and the force result is calculated to realize force sensing. The force sensor is a suspended oscillator without physical contact, the detection mode is all-optical signal detection without physical contact based on an optical fiber, and the force signal measurement can be directly carried out in the water medium. Compared with the optical fiber underwater acoustic sensor, the anti-magnetic suspension force sensor has the advantages of simple structure and low system noise, and the six-axis force signal measurement can be realized by a single suspended oscillator, and the underwater acoustic detection sensitivity is higher.