XF-CQ10 Traffic Sensor Intelligent Visibility Sensor Automatic Weather Sensor Atmospheric Visibility Sensor

XF-CQ10 Traffic Sensor Intelligent Visibility Sensor Automatic Weather Sensor Atmospheric Visibility Sensor

Welcome to the products of Handan Yantai Import & Export Co., Ltd.

Please read and understand this manual carefully before using this traffic sensor, and strictly abide by the provisions of this manual.

It is forbidden for non-professionals to disassemble the traffic sensor, and after-sales maintenance must be carried out by the company's professional and technical personnel.

It is strictly forbidden to place the device in a high-temperature environment that exceeds the technical conditions of the manual.

The Company reserves the right to amend and change the parameters without prior notice.

1.1 Traffic sensor Working Principle

Atmospheric visibility refers to the maximum distance at which a sighted person can identify an object of a certain size from the background (sky or ground), also known as meteorological sight by this traffic sensor.

According to the altitude and relative position of the observer and the target, atmospheric visibility can be divided into horizontal visibility, strabic visibility and vertical visibility.Traffic sensor of visibility in meteorological observations generally refers to horizontal visibility, that is, effective visibility in the horizontal direction (the so-called effective visibility refers to the maximum horizontal distance that can be seen in more than half of the surrounding field of vision). Unless otherwise specified, the traffic sensor of visibility referred to in this manual is effective visibility in the horizontal direction as defined herein.

According to the definition of meteorological optical visual range

MOR＝ln(0.05)/δ

where δ is the extinction coefficient.

The atmospheric extinction coefficient is mainly affected by small solid particles, aerosol particles, and other atmospheric molecules in the air. During the propagation of light, light waves are absorbed or scattered by the above-mentioned objects, resulting in the attenuation of light radiation. We calculate the attenuation coefficient of light in the atmosphere mainly using the effect of scattering, so as to derive atmospheric traffic sensor visibility. Atmospheric scattering refers to the fact that when light travels in the air, due to the influence of solid small particles and aerosol particles on light, the propagation direction of light changes, and radiates to different directions with a certain regularity, and this scattering phenomenon is proportional to the radius of scattered particles in the atmosphere and the wavelength of light. According to different relationships, scattering is divided into MIE scattering and Rayleigh scattering. According to the theoretical study of MIE scattering, the traffic sensor influence of the absorption part of the scattered particles in the atmosphere on the light attenuation coefficient is negligible. MIE scattering is the main object of study when we study visibility measurements.

Based on the above theory, our traffic sensor visibility sensor chooses the forward scattering principle with a scattering angle of 35-50° and a selected center wavelength of 850 nm for the measurement spectrum.

2.1Hardware structure of traffic sensor

The visibility sensor is a stand-alone device that can be mounted to a suitable pole traffic Sensor via the mounting accessories that come with the device. The equipment is basically composed of four parts: optical transmitter, optical receiver, built-in heating component and control processing unit.

Visibility is one of the most important types of traffic sensors.

 3.1 Traffic sensor Drawing

Traffic sensor Data 

Traffic sensor Working Environment

Q: What's the common power supply and signal output of this traffic sensor?

A: This traffic sensor common power supply and signal output is DC: 12VDC, RS485. The other demand can be custom made.

Q: How can I collect data of this traffic sensor?

A:You can use your own data logger or wireless transmission module if you have , we supply the RS485-Mudbus communication protocol.We can also supply the matched LORA/LORANWAN/GPRS/4G wireless transmission module.

Q:What's the standard cable length of traffic sensor?

A: The traffic sensor standard length is 3m. But it can be customized, MAX can be 1KM

Q:What's the lifetime of Traffic Sensor?

A:At least 3-5 years long.

Q: May I know your warranty of this traffic sensor?

A: Yes, usually it's 1 year.

Q:What's the delivery time of this traffic sensor?

A: Usually, the goods will be delivered in 3-5 working days after receiving your payment. But it depends on your quantity.

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