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According to foreign media reports, Kistler, a Swiss measurement technology developer and supplier, plans to display the latest kitraffic digital in motion weighing (WIM) system for the first time at the Amsterdam International Transport Exhibition in April next year. WIM technology has been used in a variety of applications around the world, such as protecting bridges and roads, or collecting statistics. Sensors on the road are able to record the weight of the moving vehicle without affecting the traffic flow. So far, however, the technology has not been able to grab an overloaded vehicle directly after weighing it down like a speed control system. In most countries, "direct enforcement" or automatic recording of vehicle data, followed by a ticket, requires the vehicle to be weighed using a certified static scale. And if the quality of the road is not particularly good, or if the vehicle is obliquely passing through the sensor, the road authority also needs to rely on the measurement results. WIM technology is mainly used to determine the vehicle weight in advance in most measuring stations that impose fines on overloaded vehicles. After that, law enforcement personnel need to verify the measurement results with the help of static weighbridge before the driver can pay the fines. Kistler said that the kitraffic digital dynamic weighing system can significantly improve the measurement accuracy and directly impose fines according to legal requirements. The company said that the kitraffic digital system is the most accurate WIM system at present. Without considering all external factors (such as driving operation or road conditions), the error between the system and the gross vehicle weight is only 2%. Kistler said that through the technology, the highway management agency can automatically impose fines on overloaded vehicles. The system is equipped with a new lineas sensor (the sensor integrates multiple quartz crystals), which can independently transmit data through a digital interface. The digital measurement signal enables each quartz crystal to be calibrated independently, and prevents the signal from interfering with the transmission path. Using the measurement signal, the complex algorithm can calculate the axle and total weight of each vehicle. Because of the open standard interface, the system can be easily integrated into the third-party traffic flow monitoring system and background execution platform. The new digital system can also ignore other error events. For example, even if the tested vehicle is about to overtake and driving on the diagonal of WIM sensor, the sensor can provide reliable results. At the same time, it can monitor any number of lanes, and provide information about whether the vehicle is equipped with single or double tires, and summarize the situation. The new system automatically records this information without additional hardware. Kistler points out that the new kitraffic digital system can even eliminate the inductive loop previously used to detect cars. (all pictures in the article are from traffictechnologytoday. Com)