Symeo’s LPR-1DHP-291 sensor now offers real-time distance measurement up to 50m with a single sensor and up to 500m with multiple sensors. The LPR-1DHP-291 is a robust, maintenance-free and wear-free sensor system that is unaffected by dirt, extreme dust, vibrations, bright sunlight, fog or precipitation.

“With a measurement accuracy in the millimetre range, the industrial radar system with integrated directional antenna is suitable for the development of applications in the areas of crane positioning, collision avoidance, goods  tracking, process monitoring and automation, object detection or as radar barriers,” stated Symeo.

LPR-1DHP-291 is based on a proven 60 GHz radar technology and achieves different measurement accuracies, distances and repetition rates in different bandwidth and installation modes. The measurement distance depends on the radar cross-section (RCS) of the target.

“For a single sensor, the measurement range is typically 1m to 50m and the accuracy is ±5mm in 2 GHz bandwidth mode and at a measurement rate of 350 Hz,” continued Symeo. “The high sampling rate enables its use for dynamic monitoring tasks. By combining several sensors, even very large distances can be monitored when the technology is used in ports or container handling areas, for example.”

As a replacement for ultrasonic sensors that are highly sensitive to wind, weather and dirt in applications, such as collision avoidance, Symeo recommends its new entry level LPR-1DHP-350. This sensor operates in the frequency range of 120 GHz for high precision. Its dimensions of 90mm x 90mm x 35mm enable installation in applications that a radar system would not have fitted previously.

“The LPR-1DHP-350 radar system performs 1D distance measurements for short and medium ranges with high accuracy,” said  Symeo. “Based on primary or secondary – cooperative pair of devices – radar measurements, the LPR1DHP-350 can detect the position and speed of objects, such as cranes or rail-based transport systems, in real time and make the data available via the device interfaces.

“The sensors are easy to install and put into operation with the aid of a web-based interface. A directional antenna is integrated into the housing. The device features the latest millimetre-wave technology for highly precise measurements. Even under the harshest environmental conditions, the maintenance-free and wear-and-tear-free wireless technology operates reliably with a high degree of availability, indoors and outdoors.”

In primary radar mode, a single LPR-1DHP-350 measures the distance and speed to a reflective object, typically a metal item or specific corner reflector. The range is up to 40m depending on the RCS of the target. The primary radar mode features high update rates and enables cost-effective installation in applications including positioning of smaller cranes, presence surveillance, level probing and detection of objects.

“In secondary radar mode, two LPR-1DHP-350 sensors measure the distance and speed between each other. The secondary radar mode features medium ranges of up to 100m and measurement rates of up to 110 Hz,” concluded Symeo.

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This complete item is approximately 520 words in length, and appeared in the June 2023 issue of WorldCargo News, on page 22. To access this issue download the PDF here