High-precision absolution relative gravity measurement instrument driven by optical force
A gravity measurement and high-precision technology, which is applied in the field of high-precision gravity measuring instruments and high-precision absolute relative gravity measuring instruments, can solve the problems of small measurement dynamic range, low measurement accuracy, long absolute measurement cycle, etc., and achieve the measurement dynamic range Large, high-precision measurement, wide dynamic range effect
A gravity measurement and high-precision technology, which is applied in the field of high-precision gravity measuring instruments and high-precision absolute relative gravity measuring instruments, can solve the problems of small measurement dynamic range, low measurement accuracy, long absolute measurement cycle, etc., and achieve the measurement dynamic range Large, high-precision measurement, wide dynamic range effect
CN107315200AActive Publication Date: 2017-11-03ZHEJIANG UNIV
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[0017] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.
[0018] refer to figure 1 , The gravimeter of the present invention performs high-precision gravity measurement based on the optical force effect, and can simultaneously realize absolute gravity measurement and relative gravity measurement. The present invention adopts the device as shown in the figure, including a first laser 1, a collimating beam expander system 2, a mirror 3, a first beam splitter 4, a second beam splitter 5, a falling prism 6, a reference prism 7, a photoelectric Detector 8 , second laser 9 , steering lens 10 , focusing lens 11 and four-quadrant detector 12 . Wherein the first laser 1, the collimating beam expander system 2 and the reflector 3 are on the same horizontal line in turn, and the first beam splitter 4, the second beam splitter 5 and the photodetector are on the same horizontal line in turn and are located below ...
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Abstract
The invention discloses a high-precision absolution relative gravity measurement instrument driven by optical force. The measurement instrument comprises a first laser, a collimation beam extending system, a reflection mirror, a first beam divider, a second beam divider, a falling body prism, a reference prism, a photoelectric detector, a second laser, a steering lens, a focusing lens and a four-quadrant detector. A hollow photonic crystal fiber light trap system is arranged between the second laser and the steering lens. Micro particles are arranged in the light trap system. According to the invention, high-precision gravity accelerated speed is achieved by use of optical force effects; when the gravity accelerated speed is precisely measured, the measured dynamic range is quite wide; by use of different parts to work, high precision measurement of the absolute gravity accelerated speed can be achieved and real-time measurement of the relative gravity accelerated speed can be achieved; the measurement dynamic range is wide; and the measurement instrument is suitable for aerospace and sailing field.
Description
technical field [0001] The invention belongs to the technical field of high-precision gravity measurement, and relates to a high-precision gravity measurement instrument, in particular to a high-precision absolute relative gravity measurement instrument driven by optical force, which can simultaneously realize absolute gravity measurement and relative gravity measurement. Background technique [0002] The photodynamic effect refers to the interaction between light carrying energy and momentum and matter, resulting in the exchange of momentum, which is manifested as the effect of light exerting force on objects. The magnitude of the force is equal to the change of the momentum of the object per unit time caused by the light, and thus can cause the displacement and speed of the object to change. The force generated by light is directly proportional to the light intensity, the stronger the light intensity and the smaller the mass of the irradiated object, the more obvious this ...
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Patent Timeline
03 Nov 2017
Publication
CN107315200A
- IPC
- G01V7/00; G01V7/16
- CPC
- G01V7/00; G01V7/16
- Inventors
- 黄腾超; 陈傲