Embedded intersection wireless traffic detector replace loop for vehicle detection?? ? 1. Introduction ? Wireless Vehicle Detector(WVD) is based on ?magnetic , short range RF and nano power communication protocol technology. It is installed onto the road surface to collects the data of traffic flow. The data is gathered by Wireless Access Point(WAP), which acts as a wireless gateway between the wireless vehicle detection system and other traffic application systems. All the WVDs, under the management of WAP, establish a local wireless sensor network, which collects traffic information real timely. ? ?
? ? 2. Principle?and?Technology By?capture?the?tiny?change?of?magnetism?caused?by?the?passing?vehicle,?WVD (Wireless?Vehicle?Detection Sensor)?in?the?Wireless?vehicle?detection?system?calculate?the?vehicle?velocity,?length,?type?and?occupy?rate?rapidly,?and?then?send?these?information?to?the?WAPs?(Wireless?Access?Points),?which?will?receive?all on?line?WVDs’?information?and?transmit?these?data?to?the?user?systems?through?RS-232/485,?Ethernet,?GPRS,?etc. ? 3. Advantages a)??Install fast. It is only almost 6 minutes that is needed to install one ?wireless vehicle detector sensor in the road, after installation, the traffic control could be?released immediately; b)??Work all-weather. Bad weather for example heavy fog, snow and rain makes no difference; c) ?No damage to the road. There’s no need to cut slots on the road surface and place cables or wires as the installation of loops, but only a tiny?hole with the size?Φ 120/H?100 mm, which makes WVDs become the most suitable vehicle detecting solution on the city high-way and bridges; d) ?About?10 years long life span. With high standard water proof and anti-press characteristics,? WVD wireless vehicle detector sensor can even?be used in the damaged or distorted roads where loops cannot be installed. e)??Cost saving.? f) ?Easy to?maintain. Unlike the loops that are easily to be damaged but difficultly to be repaired, WVD wireless vehicle detector sensor supports firmware updating over the air. No need to re-cut the slots, no more materials needed, and all of what you need is to take almost 10 minutes for the devices wireless updating; g)? Low operation consuming. Due to the ultra-low power design and battery supply solution, WVD wireless vehicle detector’s consumed power is very lower than any other detectors like loops, video, micro-wave etc. in the market. This appears more and more significantly to our environments; h)??Replace loops seamlessly. The same installation position and compatible output signals makes it easily and simply to replace loops in your system directly. ? 4. Compared with Loops ? ? ? ? 5. Applications ? ? (1) Adaptve Traffic Signal Control System ? (2)Travel Information System ? (3)Traffic Flow Monitoring System ? (4)Red Light and Speed Enforcement ? (5)Corridor Management ? ? ? 6.Case Study? ? ?Rosim wireless vehicle detector sensor had successfully integrated with Haixin signal controller. ? ? ?7.Services ?1. All of inquiry will be replied you within 24 hours. ? ?2. We provide professional staff to follow you by mail, phone or chating online with English. 3. To ensure the quality of products, all of them must be test again before delivery. 4. Unique problems can be solved by our professional? engineers. 5. One year products quality guarantee. 6. After sales service and technical support. 7.?Offering?relative?certificate according to your requests. Any further question, plz contact Lucy freely ?