Laser instrument for measuring sand in water

Abstract

The invention discloses a laser instrument for measuring sand in water, which comprises a subwater machine and an overwater computer. The laser instrument for measuring sane in water is used for measuThe invention discloses a laser instrument for measuring sand in water, which comprises a subwater machine and an overwater computer. The laser instrument for measuring sane in water is used for measur tight plug. By treatment, information about the size and the consistency of the suspended sand grains in the seawater is obtained. The laser instrument for measuring sand in water overcomes the inflr tight plug. By treatment, information about the size and the consistency of the suspended sand grains in the seawater is obtained. The laser instrument for measuring sand in water overcomes the influence of stray light to the scattered light of the suspended sand grains and obtains better measuring effect by utilizing the autozoom Fuller lens suitable for different measuring ranges.uence of stray light to the scattered light of the suspended sand grains and obtains better measuring effect by utilizing the autozoom Fuller lens suitable for different measuring ranges.ring the partical size distribution and the consistency of suspended sand grains in seawater on the spot. A laser in the subwater machine emits light under the timed automatic control of a control cirring the partical size distribution and the consistency of suspended sand grains in seawater on the spot. A laser in the subwater machine emits light under the timed automatic control of a control circuit and lightens a water body in a sealed sample cell communicated with the seawater. Scattered light generated by the suspended sand grains in the measured water body is focused on an annular photoecuit and lightens a water body in a sealed sample cell communicated with the seawater. Scattered light generated by the suspended sand grains in the measured water body is focused on an annular photoelectric receiver positioned on the back focal surface of a Fuller lens through the autozoom Fuller lens. A photosignal outputted by the photoelectric receiver is transmitted into a circuit board, chanlectric receiver positioned on the back focal surface of a Fuller lens through the autozoom Fuller lens. A photosignal outputted by the photoelectric receiver is transmitted into a circuit board, changed into a digital quantity to be stored in a memory by the amplification of a circuit and the A / D conversion, and transmitted to the overwater computer by a digital signal connecting wire with a wateged into a digital quantity to be stored in a memory by the amplification of a circuit and the A / D conversion, and transmitted to the overwater computer by a digital signal connecting wire with a wate

Description

technical field [0001] The invention relates to a measuring instrument, in particular to an on-site measuring instrument for measuring the distribution and concentration of low-concentration suspended sand particles in seawater. Background technique [0002] Sediment movement has an important impact on the global environment and the cycle of water and nutrients. Sediment control is the key to river and land governance, and also an important part of offshore marine environment governance. Sediment control requires on-site measurement of sediment data, for this reason, on-site sediment measurement instruments in water have received further attention. [0003] The on-site sediment measuring instrument in water of the prior art has played a role in carrying out on-site sediment measurement. However, there are certain problems in the on-site sediment measuring instruments in water in the prior art, which limits the effect of on-site sediment measurement. [0004] figure 1 It i...

AI Technical Summary

Problems solved by technology

[0008] The LISST-100 laser particle size analyzer measures a large water body, but there are the following main problems: 1. Stray light easily enters the photoelectric receiver through the sealed window to form optical noise, which affects the measurement accuracy; 2. In order to change the measurement range, it must be replaced. Fourier lenses with different focal lengths add inconvenience to the measurement

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