Method for measuring sampling amount of extraterrestrial celestial body sample by using sunlight source

A technology of light source and sunshine, applied in the field of deep space exploration, can solve problems such as increasing uncertainty, increasing load weight, reducing mission reliability, etc., to achieve the effect of reducing the possibility of failure and high reliability

Pending Publication Date: 2022-03-11
THE HONG KONG POLYTECHNIC UNIV
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the above methods have the following problems: in the method (1), the sampling volume cannot be known, which increases the uncertainty and reduces the reliability of the task; in the methods (2) and (3), additional instruments need to be installed, increasing the Load weight, electronic components will increase the failure rate and reduce the overall reliability

Method used

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  • Method for measuring sampling amount of extraterrestrial celestial body sample by using sunlight source
  • Method for measuring sampling amount of extraterrestrial celestial body sample by using sunlight source
  • Method for measuring sampling amount of extraterrestrial celestial body sample by using sunlight source

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Effect test

Embodiment 1

[0031] A method for measuring the sampling volume of a sample by using a sunlight light source when a detector is in an extraterrestrial celestial body. The method uses image judgment to calculate the sampling volume of a sample container based on the landing position of the extraterrestrial celestial body, the landing angle, and the angle of the sunlight light source. Just like the sundial principle, it simply and directly displays the target. The equipment required for this technology does not require any additional sensors except for the cameras that are already equipped with the general detector itself due to mission requirements. Because the more electronic components, the greater the possibility of failure. This method eliminates the need for sensors, which means that no additional weight is added to the payload. The roughness Ra value of the inner wall of the sample container is not less than 0.8, and the sample container is integrally formed through a machining proces...

Embodiment 2

[0048] Since the sample container is mounted on a fixed panel, the relationship between the camera position and the physical size of the container is known. The distance between the camera and the bottom of the container is represented by H. The camera uses a fixed-focus lens, so when the camera can clearly capture the scale projected by the sunlight light source and the top surface of the sample in the container, you can know the f value, and f is the focal length, which is the distance between the camera and the top surface of the sample in the container. When the sample container inclination angle θ≠0°, that is, when the sample container is tilted, that is, when the reference horizontal plane of the incident angle of the light source is not parallel to the bottom surface of the sample container, after knowing the f value, you can calculate V by the following derivation 2 value to get the sample size. Wherein, the sampling volume refers to the sampling volume.

[0049] ...

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Abstract

The invention provides a method for measuring the sampling amount of extraterrestrial celestial body samples by using a sunlight light source, which comprises the following steps of: irradiating a sample container by using the sunlight light source, arranging a movable camera near the sample container, shooting images of the appearance and the inner wall of the sample container by using the camera to obtain the height of the sampled samples in the sample container, and measuring the sampling amount of the extraterrestrial celestial body samples. And the sampling amount is obtained through calculation in combination with the size structure of the sample container. According to the technical scheme, when the top end of the sample container is irradiated by the sunlight source, sunlight can be projected to the inner wall of the container to form a shadow on the inner surface, and the height and the sampling amount of a sample in the container can be judged according to the length and the shape of the generated scale marks through vision, so that the sampling amount is accurately calculated and obtained; the equipment required by adopting the mode does not need to be additionally provided with any sensor except a camera which is already provided for a common detector according to task requirements, so that the failure possibility is greatly reduced, additional weight does not need to be increased, and the reliability is high.

Description

technical field [0001] The invention belongs to the field of deep space exploration, and in particular relates to a method for measuring the sampling amount of extraterrestrial celestial body samples by using a sunlight light source. Background technique [0002] Space exploration missions often require high budgets, coupled with the limited carrying capacity of transport rockets, the design of the load must strictly control the weight. Among them, the task of sampling and returning extraterrestrial celestial bodies has stricter weight requirements for all systems, so in addition to the structure of each system, the resource usage of electricity and communication also needs to be optimized to the extreme. The main purpose of the sample return mission is to take samples from extraterrestrial objects such as the moon, Mars, and asteroids and bring the samples back to Earth. This type of task will set a target for the sampling volume, and the sampling mechanism, container and ...

Claims

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Application Information

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IPC IPC(8): G01F22/00G06T7/62
CPCG01F22/00G06T7/62
Inventor 容启亮高瑞文关福延林浩一
Owner THE HONG KONG POLYTECHNIC UNIV
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