The high precise positioning of Qatar World Cup high-tech football was originally based on UWB
Release date:2022-12-09
With the Qatar World Cup in full swing, the chip implanted in the official ball has become an important attraction, providing real-time accurate ball data for the Video Assistant Referee Technology (VAR) team to support rapid and accurate offside decisions.
Recently, a large number of articles have reported on this mysterious chip, and many experts in the industry are interested in its multiple working mechanisms. This is a complete set of Internet of Things solutions integrating motion sensing, positioning, communication, edge computing and application platform.
The 2022 World Cup official ball uses new connection technology to enhance the VAR system by providing unprecedented data and information levels, so that judges can make faster and more accurate decisions
1. Sensing system composed of two sensors
Ultra wideband (UWB) sensor, which has two functions, on the one hand, it can track and obtain accurate position data of the football, on the other hand, it can transmit the data to the background system in real time.
Inertial Measurement Unit (IMU) sensor, which is used to detect the subtle movement of football.
The two sensors cooperate effectively. The UWB sensor obtains position data, and the IMU sensor obtains fine 3D motion data to ensure the collection of major football data. As the most ideal positioning technology, UWB is superior to WiFi, Bluetooth and other means in terms of accuracy, cost, reliability, stability, etc. Its positioning accuracy can be as low as 0.1 meters, and can achieve 3D positioning, which is suitable for many controversial scenes on the court. Based on the technology of two sensors, any time a football is kicked, topped, thrown, or even lightly hit on the court, relevant data will be obtained at the speed of 500 times per second. The speed of 500 times per second means that each data collection interval is only 2 milliseconds, which greatly improves the accuracy of the football state and trajectory.
2. High speed and reliable data transmission channel
The football data will be sent to the local system in real time from the sensor, which involves the means of data communication. Although 5G can provide a high-speed and reliable data transmission channel, and the channel can be guaranteed to be smooth through network slicing, the sensors in the football must be equipped with a special 5G chip, which undoubtedly increases the weight and volume of the internal chip. At this time, UWB plays an important role. According to different application scenarios, UWB can achieve transmission distances ranging from 10-200 meters, and can achieve data transmission within the stadium.
According to the football tracking solution of related technologies, this solution will first install 12-24 UWB base stations around the stadium to collect data, and realize the data return of the base station through wired mode. The high-precision data collected by the football sensor will be sent to the base station at a frequency of 500 times per second through the built-in UWB chip, and the base station will return it.
When a football flies out of bounds during the game and another new ball is thrown in to replace it, the back-end system will automatically switch to the data input of the new ball without manual intervention.
3. Real time processing edge system
Due to the time delay of data transmission, the real-time data analysis of soccer needs to be processed by the edge computing node. The data collected by the UWB base station will be transmitted to the processor near the stadium in time. The edge processor will calculate various parameters within 20 milliseconds, such as soccer flight speed, passing distance, and identify players' behaviors, such as shooting, passing, and ball control.
In addition, UWB positioning has the advantages of strong penetration, low power consumption, good anti multipath effect, high security, low system complexity, and the ability to improve the accuracy of precise positioning. It is usually used for positioning, tracking or navigation of indoor and outdoor mobile objects, and is widely used in power transformation, factories, public security inspection, coal mines and other fields.
Recently, a large number of articles have reported on this mysterious chip, and many experts in the industry are interested in its multiple working mechanisms. This is a complete set of Internet of Things solutions integrating motion sensing, positioning, communication, edge computing and application platform.
The 2022 World Cup official ball uses new connection technology to enhance the VAR system by providing unprecedented data and information levels, so that judges can make faster and more accurate decisions
1. Sensing system composed of two sensors
Ultra wideband (UWB) sensor, which has two functions, on the one hand, it can track and obtain accurate position data of the football, on the other hand, it can transmit the data to the background system in real time.
Inertial Measurement Unit (IMU) sensor, which is used to detect the subtle movement of football.
The two sensors cooperate effectively. The UWB sensor obtains position data, and the IMU sensor obtains fine 3D motion data to ensure the collection of major football data. As the most ideal positioning technology, UWB is superior to WiFi, Bluetooth and other means in terms of accuracy, cost, reliability, stability, etc. Its positioning accuracy can be as low as 0.1 meters, and can achieve 3D positioning, which is suitable for many controversial scenes on the court. Based on the technology of two sensors, any time a football is kicked, topped, thrown, or even lightly hit on the court, relevant data will be obtained at the speed of 500 times per second. The speed of 500 times per second means that each data collection interval is only 2 milliseconds, which greatly improves the accuracy of the football state and trajectory.
2. High speed and reliable data transmission channel
The football data will be sent to the local system in real time from the sensor, which involves the means of data communication. Although 5G can provide a high-speed and reliable data transmission channel, and the channel can be guaranteed to be smooth through network slicing, the sensors in the football must be equipped with a special 5G chip, which undoubtedly increases the weight and volume of the internal chip. At this time, UWB plays an important role. According to different application scenarios, UWB can achieve transmission distances ranging from 10-200 meters, and can achieve data transmission within the stadium.
According to the football tracking solution of related technologies, this solution will first install 12-24 UWB base stations around the stadium to collect data, and realize the data return of the base station through wired mode. The high-precision data collected by the football sensor will be sent to the base station at a frequency of 500 times per second through the built-in UWB chip, and the base station will return it.
When a football flies out of bounds during the game and another new ball is thrown in to replace it, the back-end system will automatically switch to the data input of the new ball without manual intervention.
3. Real time processing edge system
Due to the time delay of data transmission, the real-time data analysis of soccer needs to be processed by the edge computing node. The data collected by the UWB base station will be transmitted to the processor near the stadium in time. The edge processor will calculate various parameters within 20 milliseconds, such as soccer flight speed, passing distance, and identify players' behaviors, such as shooting, passing, and ball control.
In addition, UWB positioning has the advantages of strong penetration, low power consumption, good anti multipath effect, high security, low system complexity, and the ability to improve the accuracy of precise positioning. It is usually used for positioning, tracking or navigation of indoor and outdoor mobile objects, and is widely used in power transformation, factories, public security inspection, coal mines and other fields.