As the number and area of ​​road marking requirements are gradually expanding, especially high-speed roads, long distances, short inspection cycles, and high census requirements, there is an urgent need for a road marking detection, continuous, efficient and accurate Measuring equipment. Liaoning Provincial Institute of Communications-High-speed continuous detection experiment of retroreflection coefficient of road marking In order to solve the problem of rapid and continuous detection of continuous road marking retroreflection, Liaoning Provincial Institute of Transportation Sciences introduced the Danish DELTA company LTL-M mobile road marking retroreflective measuring instrument. LTL-M can continuously measure the retroreflective performance of road markings under high-speed driving (maximum speed of 90km / h); The equipment can be installed on any ordinary vehicle; It can automatically adjust the bumps of the vehicle during the test process during the movement, thereby providing accurate measurement results; LTL-M can install the sensor system (pre-installed accessories) in 10-15 minutes and complete the calibration in 5 minutes. Measurement site In the normal driving process of the vehicle, LTL-M performs real-time detection of the road reflection coefficient: The test data can be displayed and recorded on the tablet in real time: Measurement main interface The information that can be displayed on the measurement interface includes: GPS connection status, measured distance (6m in front of the device), real-time retroreflective continuous measured values ​​of the left and right markings, distance traveled, speed of travel, and type selection of markings. Measuring principle of LTL-M LTL-M is a device installed on the vehicle for continuously measuring the retroreflection coefficient of road markings at normal driving speed. It can measure various types of road markings and measure the markings at a distance of 30m with the highest accuracy. LTL-M can install the sensor system (pre-installed accessories) in 10-15 minutes and complete the calibration in 5 minutes. Can be installed on any ordinary car, adjust the LTL-M sensor to a height of 100 mm / 4.0 above the road surface. During the measurement, the measurement area is 1m × 1m along the driving direction of the vehicle. The critical value of the retroreflection of the measured reticle is defined as 40 mcd / lux / sqm (that is, the retroreflective intensity below 40 mcd / lux / sqm is not considered as a reticle, and the device can automatically detect and identify it), with a minimum width of 5 cm, Only 100 centimeters long and 70,000 pixels per square meter can be considered as marking. LTL-M technology LTL-M is based on a latest technology. The LTL-M measurement system uses a proprietary flash system, digital camera technology and real-time digital image processing technology. One of the main advantages of LTL-M is that it can automatically adjust the bumps of the vehicle during the test process during the movement, thereby providing accurate measurement results. The LTL-M measuring instrument is as accurate as the handheld instrument, that is, the typical repeatability is ± 3%, and the typical repeatability is ± 5% under driving conditions. Standards met EN 1436 (RL), ASTM E1710 and EN 1463-1 Measurement of LTL-M At a speed of 90 kilometers per hour (both high and low speeds), continuously measure the RL (night visibility) of the full width and full length of the dry road marking. Measuring area 1 × 1 meter / 3 × 3 feet. Report the measurement results as the average value issued per meter (3 feet) or 1 meter (3 feet) to the uncertain distance. Simultaneously measure two road markings and issue a report separately. Record the geometry (display width). Measuring contrast during the day Measure existing road studs / cat's eyes / protruding road signs Measure the retroreflection of white and yellow markings Measuring line cross-section 25 mm / 1 inch Record vehicle speed, GPS coordinates, date and time User menu with multiple languages About DELTA Denmark DELTA is the first company to propose the concept of retro-reflection. Its products are mainly used to measure the retro-reflection of road markings and traffic signs to ensure that the performance of signs and markings meets the requirements of the existing specifications. The company uses its highly reliable Retroreflective measurement products are famous all over the world. Euramerican Land is the exclusive agency service provider of DELTA in China. For more information about DELTA products, welcome to Euramerican Land. 1.The thickened bowl is waterproof and oil-proof to ensure that it is watertight for 72 hours. Ideal for everyday use, family gatherings, outdoor picnics, travel. Can also pack food, it is a good takeaway food container, and perfect for refrigerator fresh. Kraft Paper Sushi Container,Biodegradable Bowl,Kraft Paper Sushi Tray,Kraft Paper Food Containers EVER GREEN(ZHEJIANG)NEW MATERIAL CO., LTD / KUNSHAN GREENPACK CO.,LTD , https://www.zjchangjingpack.com
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