Underwater photosynthetically active radiation sensor equipment immersion factor measuring device
A technology of photosynthetically active radiation and sensor equipment, applied in the marine field, can solve the problems of affecting measurement accuracy, narrow application range, insufficient flexibility, etc., and achieve the effect of reducing measurement errors, constant measurement conditions, and reducing the difficulty of installation and adjustment.
Pending Publication Date: 2022-06-28
TONGJI UNIV
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Problems solved by technology
This device can only calibrate the cosine corrector material and cannot be used directly to calibrate the sensor
Moreover, it is difficult to adjust the light intensity and spectrum of the light beam used, resulting in a narrow application range of the device, insufficient flexibility, and poor reproducibility of measurement results
In addition, the distance from the liquid surface to the light source will be constantly changed during the working process, resulting in unstable measurement conditions and affecting the measurement accuracy
Method used
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[0035] The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments. This embodiment is implemented on the premise of the technical solution of the present invention, and provides a detailed implementation manner and a specific operation process, but the protection scope of the present invention is not limited to the following embodiments.
[0036] An underwater photosynthetically active radiation sensor equipment immersion factor measuring device, such as figure 1 shown, including:
[0037] The point light source 1, the diaphragm 2, the collimating lens 3, the wavelength filter wheel 4, the intensity filter wheel 5, the focusing lens 6, the homogenizing rod 7 and the beam expanding collimating mirror 8 arranged in sequence along the optical path. The light path is generally horizontal;
[0038] monitoring probe 10 and control terminal 16;
[0039] The water tank 11, the probe to be tested 15 and the electronic...
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The invention relates to an underwater photosynthetically active radiation sensor equipment immersion factor measuring device. The device comprises a point light source, a diaphragm, a collimating lens, a wavelength filter wheel, an intensity filter wheel, a focusing lens, a light homogenizing rod and a beam expanding collimating lens which are sequentially arranged along a light path, a monitoring probe and a control terminal; the electric control lifting platform is arranged in the water tank and drives the to-be-detected probe to ascend and descend in the water tank, and the to-be-detected probe and the electric control lifting platform are both connected with the sub-control terminal; and the beam splitter is arranged behind the beam expanding collimating mirror and is used for splitting the incident light beam into a first light beam and a second light beam which are respectively irradiated to the monitoring probe and the probe to be detected. Compared with the prior art, the method has the advantages of improving the accuracy of immersion factor measurement and the like.
Description
technical field [0001] The invention relates to the field of marine technology, in particular to an immersion factor measuring device for underwater photosynthetically active radiation sensor equipment. Background technique [0002] The underwater photosynthetically active radiation sensor is used to measure the level of spectral irradiance available for phytoplankton photosynthesis. During the use of the underwater photosynthetically active radiation sensor, due to the aging of the detector, the contamination of the components or the reduction of sensitivity, the baseline drift and the failure of the calibration coefficient will occur, which will cause the measurement error to exceed the allowable range. Calibration to ensure the accuracy and reliability of measurement data. [0003] The factory calibration of the underwater photosynthetically active radiation sensor is carried out in the air, but when the sensor is immersed in the underwater environment, due to the differ...
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IPC IPC(8): G01J3/02G01J3/28
CPCG01J3/0297G01J3/28
Inventor 石鹏杨群慧高航季福武刘宝波
Owner TONGJI UNIV