Impact of Accuracy of Laser Spot Quality in Laser Triangulation Long-Term Continuous Measuring Based on PSD

Xiaokun, 丁小昆 Ding; Tiegen, 刘铁根 Liu; Dianyou, 宋殿友 Song

doi:10.3788/cjl201239.0208006

Cited by 3 publications

(1 citation statement)

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“…OF TESTING SYSTEM [1,2,3] As shown in figure 2, in the measurement of transient angle, as the muzzle disturbance, angle of laser light irradiation on PSD are different, thus spot formed on the PSD is different. From the chart we can see that the laser spot of semiconductor laser is not a small point infinitely, and the energy distribution of the spot of is uneven from literature, there is the energy center, the PSD output position is not the spot center coordinate but energy barycenter coordinate.…”

Section: Analysis Of Factors Affecting the Accuracymentioning

confidence: 99%

Study on Laser Spot Affecting the Accuracy of Transient Angle Test System Based on PSD

Li¹,

Zhang²,

Xu³

et al. 2013

Proceedings of the 3rd International Conference on Electric and Electronics

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Section: Analysis Of Factors Affecting the Accuracymentioning

confidence: 99%

Study on Laser Spot Affecting the Accuracy of Transient Angle Test System Based on PSD

Li¹,

Zhang²,

Xu³

et al. 2013

Proceedings of the 3rd International Conference on Electric and Electronics

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Sun sensor design and test of a micro satellite

Liu¹,

Sitong²,

Tan³

et al. 2016

J. meas. eng.

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Abstract. According to the requirement of small satellite, this paper designed a digital sun sensor which diaphragm is a V-shaped cross-section structure. Using Position Sensitive Detector (PSD) as the light detector, we designed the V-shaped cross-section structure based on the pinhole imaging principle. The sun sensor realized the accurate calculation for two axis sun angle of the sun sensor. The mechanical test, thermal test and testing of the sun sensor are designed and carried out. The mechanical test and thermal test results verify the stability of the sun sensor. Testing result shows that the detection angle can reach (120°)×(120°), and the attitude determination accuracy is better than 6" in the entire viewing field. The mass, volume and power consumption of the sun sensor is 0.177 kg, 78 mm×77 mm×21 mm and 0.25 W. The sun sensor has low power consumption, large viewing angle and high precision characteristics, which realized the sun sensor the miniaturization and meet the requirements of the micro satellite. Its performance has been verified in orbit.

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Novel Method of Detecting Movement of the Interference Fringes Using One-Dimensional PSD

Wang

Xia

Liu

et al. 2015

Sensors

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In this paper, a method of using a one-dimensional position-sensitive detector (PSD) by replacing charge-coupled device (CCD) to measure the movement of the interference fringes is presented first, and its feasibility is demonstrated through an experimental setup based on the principle of centroid detection. Firstly, the centroid position of the interference fringes in a fiber Mach-Zehnder (M-Z) interferometer is solved in theory, showing it has a higher resolution and sensitivity. According to the physical characteristics and principles of PSD, a simulation of the interference fringe’s phase difference in fiber M-Z interferometers and PSD output is carried out. Comparing the simulation results with the relationship between phase differences and centroid positions in fiber M-Z interferometers, the conclusion that the output of interference fringes by PSD is still the centroid position is obtained. Based on massive measurements, the best resolution of the system is achieved with 5.15, 625 μm. Finally, the detection system is evaluated through setup error analysis and an ultra-narrow-band filter structure. The filter structure is configured with a one-dimensional photonic crystal containing positive and negative refraction material, which can eliminate background light in the PSD detection experiment. This detection system has a simple structure, good stability, high precision and easily performs remote measurements, which makes it potentially useful in material small deformation tests, refractivity measurements of optical media and optical wave front detection.

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Impact of Accuracy of Laser Spot Quality in Laser Triangulation Long-Term Continuous Measuring Based on PSD

Cited by 3 publications

References 0 publications

Study on Laser Spot Affecting the Accuracy of Transient Angle Test System Based on PSD

Study on Laser Spot Affecting the Accuracy of Transient Angle Test System Based on PSD

Sun sensor design and test of a micro satellite

Novel Method of Detecting Movement of the Interference Fringes Using One-Dimensional PSD

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