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SmartSensor HD

Wavetronix Products

Wavetronix SmartSensor HD

The SmartSensor™ HD delivers consistently accurate data for traffic monitoring systems, even in slow or congested traffic. Operating at five times the bandwidth of the original SmartSensor, the HD also has five times the resolution, a detection range of 250 feet and the ability to simultaneously detect up to 22 lanes of traffic.

HD Digital Wave Radar

Digital Wave Radar is Wavetronix' patented process for digitally generating a radar signal. For proper and stable operation, frequency modulated continuous wave (FMCW) radars must transmit a stable and preferably linear frequency sweep. Any nonlinearities of the sweep can reduce range resolution. Further, changes in the df/dt sweep slope due to temperature drift may reduce the accuracy of ranges measured, and shifts in the center frequency due to temperature changes can push the transmission signal out of the FCC allocated band.

HD Digital Wave Radar digitally synthesizes the radar transmit signal such that at all times it is derived to be some numerical multiple of a fixed low crystal-controlled reference frequency.

Vehicle-based Detection

Accurate Vehicle detection means that each individual vehicle is detected and its speed, duration, length and lane assignment is precisely measured.

SmartSensor HD detects vehicles and then assigns them to the lane closest to them. As a result, even lane changing vehicles are accurately detected. This is called vehicle-based detection, and it's possible because of SmartSensor HD's high resolution radar. In contrast, zone based detectors like loops or low resolution radar are lane-based detectors and will detect anything that passes through the lane. In this case, it is likely that the lane changer will be counted twice, once in each lane.

Vehicle-based Detection

Dual Radar

With true high definition radar, Wavetronix has been able to develop a radical concept—multiple radars contained in one device. SmartSensor HD consists of multiple radars; two receive antennas positioned side-by-side with enough space between to create two separate, high definition beams.

Dual Radar

SmartSensor HD's dual radar technology allows it to detect direction of travel, which is very important for reversible lanes. With two beams, HD determines the order in which a vehicle passes through the two beams, thus allowing it to determine in which direction the vehicle is traveling without any input from the user.

By measuring the time it takes for a vehicle to pass between the two antennas to within a fraction of a millisecond, SmartSensor HD provides a highly accurate measurement that is then used to calculate each individual vehicle's speed.

Accurate Vehicle detection means that each individual vehicle is detected and its speed, duration, length and lane assignment is precisely measured.

SmartSensor HD detects vehicles and then assigns them to the lane closest to them. As a result, even lane changing vehicles are accurately detected. This is called vehicle-based detection, and it's possible because of SmartSensor HD's high resolution radar. In contrast, zone based detectors like loops or low resolution radar are lane-based detectors and will detect anything that passes through the lane. In this case, it is likely that the lane changer will be counted twice, once in each lane.

Per Vehicle Speed

Per Vehicle Speed

The two beams generated by SmartSensor HD transmit parallel to each other, creating a speed trap similar to a dual loop system. This speed trap allows SmartSensor HD to offer something competitive radar traffic detectors can't—accurate per vehicle speeds. Algorithms measure the time it takes a vehicle to move from one beam to the next. This results in highly accurate speed measurements and more precise vehicle classifications

Consistent Lane Data

Consistent lane data means that HD will reliably detect traffic in a variety of conditions. This picture shows HD detecting traffic at a close offset; over a barrier; with uneven lane spacing (a gore area); with a sound wall; and at near and far ranges simultaneously (250 foot range). These are conditions in which radar sensors tend to have problems, but SmartSensor HD has been designed to perform well in these challenging situations.

Since SmartSensor HD starts with accurate vehicle data, the accumulated lane data is very precise. This callout box contains the interval lane data that HD collects, including count, average speed, 85th percentile speed, occupancy and binned speed. 85th percentile speed can only be obtained when accurate per vehicle speed is measured.

Auto-configuration

Vehicle detections will automatically display in the Lane Configuration screen and auto-configured lanes are displayed in the right hand sidebar. These lanes can be copied to the edit area and then saved to the sensor by clicking on the side. Lanes can be copied one at a time or as a group. Direction, width and distance are automatically detected, but for more control, a user can manually adjust lane information, including adding and deleting lanes, naming them and assigning the lane to be active or not. Users can specify to display vehicles at the measured range or in the lane to which they are assigned.

Auto-configuration

SmartSensor HD Legacy (WX-SS-125) Downloads

SmartSensor HD (WX-SS-126) Downloads

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