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Radar sensors ensure proper material levels in the hopper, guaranteeing smooth production. When materials such as grains or concrete mixtures are loaded into the hopper, dry dust particles fill the air. Dust causes signal loss in many optical sensors, and ultrasonic equipment may provide incorrect readings if debris accumulates on the sensors. Radar waves, however, can penetrate airborne particles to accurately measure the material level in the hopper.
Workers at drive-through windows in restaurants, banks, or pharmacies need to react quickly to customers. The K50R radar sensor can detect vehicles in snow, rain, fog, and sunlight conditions where other detection technologies might result in false or missed detections. Quick and efficient vehicle identification helps businesses analyze traffic patterns and eliminate bottlenecks, minimizing wait times and ensuring timely service.
Extreme temperature fluctuations, fog, steam, and water mist within automatic car washes make vehicle location detection difficult, even with commonly used ultrasonic sensors. Temperature variations can affect the speed of ultrasonic waves, leading to inaccurate vehicle positioning information. Noise from the equipment and constantly changing airflow within the car wash can also interfere with the ability of ultrasonic sensors to accurately detect vehicle edges. However, a T30R configured for reflector mode operates at 122 GHz. Other radar sensors, such as the K50R, operate at a moderate frequency of 60 GHz. Whether low-frequency, high-frequency, or frequencies in between, each has its advantages.
The 24 GHz low-frequency sensor is best suited for detecting large objects, as it produces a longer wavelength. It offers long-range detection capabilities and is unaffected by harsh weather conditions such as heavy rain or snow, making it the most effective outdoor detection solution. Conversely, higher-frequency sensors, such as 60 GHz or 122 GHz sensors, produce shorter wavelengths, allowing for the detection of smaller objects with higher accuracy and a wider range of dielectric materials.
Every day, more than 100,000 commercial flights operate worldwide. These require a large number of ground support vehicles, such as belt loaders, passenger boarding stairs, and catering trucks. This constant traffic on the tarmac greatly increases the likelihood of accidents and aircraft damage.
The new standard mandates that certain ground support vehicles be equipped with collision avoidance sensors. These vehicles can use wider-beam radar sensors (such as the 120 x 40 degree beam on the Q90R2) instead of narrow-beam sensors to safely approach aircraft on the tarmac. These sensors continuously monitor the distance between the vehicle and the aircraft and send this information to the vehicle's controller. If the vehicle gets too close to the aircraft, the controller automatically reduces its speed to avoid a collision, thus preventing time-consuming and costly accidents.
In automotive assembly plants, the leading edge of the vehicle body needs to be inspected for proper positioning in the paint booth. The body surface may be unpainted, matte, or glossy, making it difficult for optical sensors to accurately identify the car because the shiny, angled surface reflects light away from the sensor receiver.
KJT series radar sensors from KKIT can identify objects with uneven surfaces, glossy, reflective, matte black, or any other color, or objects with mirrors or windows. Therefore, the T30R radar sensor can reliably detect the position of each car body on the production line and then send the position information to the robotic arm controllers, allowing them to know the location of each part. By detecting objects of any color, shape, or reflectivity on the assembly line, continuous production can be ensured, and downtime reduced.
Large gantry cranes move heavy loads in outdoor docks, often operating close to each other. Collisions can lead to cargo damage, high crane maintenance costs, and disruptions to cargo transport. Long-range radar sensors using narrow-beam patterns, with fully configurable multi-dimensional detection capabilities, can reliably and promptly detect obstacles and other cranes while ignoring nearby cargo containers, preventing collisions. Warehouse lifting equipment such as stacker cranes and forklifts can collide with and damage shipping containers. These collisions result in time losses, cargo damage, and equipment damage. KJT sensors can be used for short-range collision avoidance. When installed on lifting equipment, these sensors can detect shipping containers and signal the equipment, causing it to automatically slow down and approach at a safe speed. Because radar is unaffected by changes in environmental conditions, radar sensors can even be used to monitor equipment operating both indoors and outdoors, such as vehicles transporting goods from indoor loading areas to waiting vehicles outdoors. Using the same sensors on all equipment also minimizes maintenance costs.
Some radar sensors operate at low frequencies, such as the KJT, which transmits radio waves at 24 GHz. Others use higher frequencies, such as the KJT, which operates at 122 GHz. Still others, like the K50R, operate at a moderate frequency of 60 GHz. Each frequency—low, high, or in between—has its advantages. The 24 GHz low-frequency sensor is best suited for detecting large objects due to its longer wavelength. It offers long-range detection capabilities and is unaffected by harsh weather conditions such as heavy rain or snow, making it the most effective outdoor detection solution. Conversely, higher-frequency sensors, such as the 60 GHz or 122 GHz sensors, produce shorter wavelengths, allowing for the detection of smaller objects with higher accuracy and a wider range of dielectric materials.
When photoelectric or ultrasonic sensors are brought close together, the signal emitted by one sensor can interfere with the signal emitted by the other, leading to inaccurate detection data, performance degradation, and reduced sensor reliability. Industrial radar sensor technology is designed to avoid crosstalk. Radar sensors use a range of different frequencies to avoid interference from other devices operating at similar frequencies or other electromagnetic radiation sources. Advanced signal processing algorithms also help distinguish radar echoes, filter out unwanted signals, and extract only relevant information, thus helping radar avoid crosstalk.
In addition, synchronization and time-division technology can also ensure that the radar system operates in a coordinated manner, rationally arrange the transmission and reception times, and avoid simultaneous transmission and reception .
Monitoring liquid levels in storage tanks typically requires installing sensors inside the tank. However, sometimes an external sensor solution is preferable, especially when direct contact with the liquid could damage or adversely affect the sensor. Radar sensors, capable of penetrating most plastics and glass, can be installed outside the tank, where they are easier to install and maintain.
KJT radar sensors can be installed on the outer wall of plastic storage tanks or on the inspection window of metal tanks. The inspection window or tank may be dusty or dirty, the plastic may be opaque, or the material inside the tank may be shrouded in mist. Even if the liquid level is uneven, or if stored under pressure or vacuum conditions, the high-frequency microwaves can penetrate the plastic or glass to measure the material level. When connected to an illumination indicator system, workers can visually assess the tank level.
To identify vehicles entering the auto repair shop, KJT radar sensors can be mounted under heavy-duty plastic, flush with the driver's side surface. The radar waves penetrate dirt and debris left on the repair area floor and detect vehicles as they park. These sensors in the indication system notify employees of customer arrivals, allowing for quick customer greetings, minimizing wait times, and improving check-in efficiency.
In some cases, sensors monitoring large areas must identify only certain objects while ignoring others, such as objects in the background or small objects near the sensor.
KJT wide-beam sensors can detect trucks approaching a loading/unloading terminal. By indicating the nearest target, it detects the truck component closest to the terminal, rather than axles or the truck body that might return a stronger signal. A light strip connected to the sensor provides real-time feedback to the driver, helping them understand the truck's distance to the terminal.
Using KJT's radar configuration software, the detection range of the KJT can be set, so that the sensor only searches for targets within the predetermined range. Vehicles moving in the background, pillars near the dock, and other unwanted objects, whether near or far, will all be ignored.
Busy railway freight yards are large-scale, dynamic working environments where multiple operations occur simultaneously. Vehicles and railcars of different shapes and sizes move at varying speeds on and around multiple tracks, carrying various types of materials, which presents a significant challenge to object inspection.
Trains consist of locomotives and various railway vehicles, including box cars, flatcars, hopper cars, tank cars, and so on. Radar sensors such as the KJT can track numerous trains and cargo types on trailers at different distances, even while they are moving. Because it can detect both moving and stationary targets, the KJT radar is a more reliable solution than Doppler radar, which can only detect moving targets.
Despite the dust in the freight yard or the buildup of dirt on the KJT sensors, radar signals can still detect objects up to 40 meters away. The radar sensors can be configured to ignore trains stopped in the track background, but will identify other trains passing in front, triggering the RFID antenna and allowing operators to know the exact location of goods in the yard. Radar sensors offer long-range detection and can ignore surrounding weather conditions and airborne dust and dirt, making them an ideal solution for railway freight yards.
Sharp edges and flat surfaces installed at certain angles can deflect radar signals like a mirror, making it difficult for radar systems to receive accurate information. To ensure reliable object detection, wide-beam radar sensors can be used to monitor large areas, better identifying circular surfaces and tilted objects.
Busy open-pit mines contain equipment of varying shapes and sizes, both mobile and stationary. Huge haul trucks transport both minerals and waste simultaneously, their massive bodies creating numerous blind spots around them. With little room for error, collision avoidance is crucial for efficient operation. The outdoor environment also presents other sensing challenges, including wind, rain, and snow, as well as the dirt and dust generated during mining operations.
KJT wide-beam radar sensors can be deployed at the front and rear of trucks as a key component of their collision avoidance systems. They are not only unaffected by surrounding weather conditions, but can also be configured to detect objects in blind spots, regardless of the object's shape, size, color, material, or surface finish. By connecting the Q130R or QT50R to LED indicators, truck operators can quickly see when to check blind spots and direct the equipment to slow down or stop, reducing the chance of costly collisions.
