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Small high-performance scattering-type visibility measuring device and measuring method thereof

A measuring device and scattering technology, applied in the field of scattering atmospheric visibility measuring devices, can solve the problems of small space of the transmitting head and receiving head, poor heat dissipation performance, great influence of ambient temperature changes of the light source and photodetector, etc., to achieve Effects of suppressing drift, stabilizing output light wavelength, and improving long-term reliability

Inactive Publication Date: 2014-11-05
NANJING HU OPTOELECTRONICS TECH
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Problems solved by technology

Since the light source and photodetector of the existing scattering-type visibility meter are respectively arranged in the emitting head and the receiving head, generally the inner space of the emitting head and the receiving head is narrow, and in addition to prevent moisture, they are all sealed, so the heat dissipation performance is extremely poor. Causes the light source and photodetector to be greatly affected by changes in ambient temperature

Method used

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  • Small high-performance scattering-type visibility measuring device and measuring method thereof
  • Small high-performance scattering-type visibility measuring device and measuring method thereof
  • Small high-performance scattering-type visibility measuring device and measuring method thereof

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Embodiment Construction

[0033] Such as figure 1 , figure 2 , image 3 As shown, the small-sized high-performance scattering atmospheric visibility measuring device of the present invention includes a transmitting part and a detecting part, and the detecting part includes a receiving head 5, a photoelectric signal processing and acquisition unit 23 and a computer control unit 22, and the receiving head adopts optical fiber collimation The device 11 receives the scattered beam, converges the beam into the receiving optical fiber 3, and transmits it to the photoelectric signal processing and acquisition unit 23, and the output signal is sent to the computer control unit 22 for processing; the computer control unit 22 calculates the visibility.

[0034] The photoelectric signal processing and acquisition unit 23 includes: a photodetector 26 , a preamplifier 27 , a bandpass filter 28 , an effective value converter 29 , and a data acquisition unit 30 .

[0035] The photoelectric signal processing and ac...

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Abstract

The invention provides a small high-performance scattering-type visibility measuring device and a measuring method thereof. The small high-performance scattering-type visibility measuring device is high in long-term reliability and accuracy. The small high-performance scattering-type visibility measuring device comprises a transmitting part and a detecting part, wherein the transmitting part comprises a stable light intensity driving source, a transmitting light intensity monitoring circuit, a transmitting light fiber and a fiber collimator; the detecting part comprises a receiving unit, an optoelectronic signal processing and acquiring unit and a computer control unit; the receiving unit receives and transmits scattered light signals by adopting fibers, the optoelectronic signal processing and acquiring unit is provided for detected scattered light beams, a signal output by the optoelectronic signal processing and acquiring unit is sent to the computer control unit, and the computer control unit is used for calculating the visibility.

Description

technical field [0001] The invention designs a light radiation receiving and measuring device, in particular a scattering type atmospheric visibility measuring device, belonging to a scattering coefficient measuring device when light radiation energy propagates in the atmosphere. Background technique [0002] Atmospheric visibility plays an important role in atmospheric optical communication, image transmission and modern traffic technology. Visibility measurement has also been paid attention to by people. With the development of modern transportation network, especially the development of expressway, water transport and aviation industry, real-time monitoring of atmospheric visibility is required, and visibility measurement is becoming more and more important. The measurement of visibility relies on the measurement of the extinction coefficient of the beam. Typical measurement methods include forward scattering method and transmission method. In the modern traffic network...

Claims

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Application Information

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IPC IPC(8): G01N21/47
Inventor 肖韶辉孙国磐
Owner NANJING HU OPTOELECTRONICS TECH
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