Device and method for measuring absolute gravity and microgravity
A technology of microgravity and gravity, applied in measuring devices, gravitational field measurement, geophysical measurement, etc., can solve the problem of not being able to measure both absolute gravity and microgravity
Pending Publication Date: 2021-07-02
TECH & ENG CENT FOR SPACE UTILIZATION CHINESE ACAD OF SCI
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[0002] At present, precise absolute gravity measurement technology is widely used in various fields such as earth science research, resource exploration, earthquake prediction, gravity field navigation and missile guidance, and microgravity measurement is also an important topic in space science and application. However, The current absolute gravimeter products can only measure the absolute gravity in the surface environment, while the electrostatic levitation accelerometer can only measure the acceleration in the microgravity environment, and there is no device that can measure both absolute gravity and microgravity
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[0035] A device for measuring absolute gravity and microgravity in an embodiment of the present invention includes a chip, a first corner cube 7, a voice coil motor for driving the first corner cube 7 to do free fall, and arranged in sequence The first non-polarizing beam splitting cube 4, the second non-polarizing beam splitting cube 5 and the first silicon detector 9;
[0036] After the first non-polarizing beam splitting cube 4 receives the laser light and splits the beam, it is respectively directed to the first corner cube 7 and the second non-polarizing beam splitting cube 5, and the first corner cube 7 Reflecting the received laser light to the second non-polarizing beam splitting cube 5, the second non-polarizing beam splitting cube 5 combines the received two laser beams and shoots them to the first silicon detector 9, When the voice coil motor drives the first corner cube prism 7 to do free fall, the first silicon detector 9 collects a plurality of voltage values i...
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The invention relates to a device and method for measuring absolute gravity and microgravity. When a voice coil motor drives a first cube-corner prism to do free falling motion on the surface of the earth, near the surface of the earth or in the space, a first non-polarization beam splitting cube performs beam splitting on received laser, and the laser is respectively emitted to the first cube-corner prism and a second non-polarization beam splitting cube, the first cube-corner prism reflects the received laser to the second non-polarization beam splitting cube, the second non-polarization beam splitting cube combines the two received laser beams and then emits the combined laser beams to a first silicon detector, the first silicon detector collects a plurality of voltage values according to a time sequence, and the chip obtains absolute gravity or microgravity according to the plurality of voltage values acquired by the first silicon detector according to the time sequence.
Description
technical field [0001] The invention relates to the technical field of measuring absolute gravity and microgravity, in particular to a device and method for measuring absolute gravity and microgravity. Background technique [0002] At present, precise absolute gravity measurement technology is widely used in various fields such as earth science research, resource exploration, earthquake prediction, gravity field navigation and missile guidance, and microgravity measurement is also an important topic in space science and application. However, The current absolute gravimeter products can only measure the absolute gravity in the surface environment, while the electrostatic levitation accelerometer can only measure the acceleration in the microgravity environment, and there is no device that can measure both absolute gravity and microgravity. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a device and method for mea...
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Login to View More IPC IPC(8): G01V7/00
CPCG01V7/00Y02A90/30
Inventor 李楠董文博何建国段文祥葛文琦
Owner TECH & ENG CENT FOR SPACE UTILIZATION CHINESE ACAD OF SCI