UWB modular crane positioning system UWB ultra-wideband positioning technology, as a commonly used large-scale mechanical lifting device, the crane is an indispensable equipment in industrial production and logistics, which can significantly improve the efficiency of production and transportation management. During the entire driving and transportation process, the traditional ground personnel command and supervision method cannot guarantee the underground efficiency and personnel safety. It is necessary to improve the overall management level through information means. Therefore, the crane positioning system came into being.
There are two traditional methods for positioning the overhead crane. One is to draw colored bars of different colors on the wall in the running direction of the overhead crane. Each color represents a certain distance. The driver checks the colored bars on the wall at any time, and then judges the position. The distance between the color bars is at least 20 cm, so the positioning of the crane is not accurate. At the same time, the operator of the crane is required to have good memory and experience to understand the general position of the crane. At the same time, there is still one person commanding to reach the predetermined position, which is extremely inefficient. This method has relatively high requirements on the operator, and the operator must be a very experienced special training personnel, which actually increases the production cost. Therefore, it cannot meet the needs of modern rapid development.
The second is to install the encoder on the axle of the crown wheel. The disadvantage of this method is that during the braking process of the crane, the wheel of the crane slips on the track, the encoder count is not accurate, and the purpose of accurate positioning cannot be achieved. In addition, for industrial enterprises to fix the location of materials and tools, shelf structure warehouses, dangerous or inaccessible occasions, relying on people to judge the position of the crane has disadvantages such as poor accuracy, low efficiency, and no personal safety.
In order to solve the above-mentioned shortcomings of the crane positioning system, a new wireless positioning technology of the Internet of Things UWB module is introduced, which realizes the accurate three-dimensional positioning of the hook, and the average positioning accuracy is 10cm. Through the API interface, the warehouse location and coordinate information are output, and the platform displays the driving trajectory to realize automatic cargo storage, warehousing, and warehouse management, and improve warehousing efficiency. At the same time, the location of the steel ring cargo is tracked in real time to avoid economic losses caused by the loss of the cargo.
Features
High positioning accuracy: Under the line-of-sight environment, the ranging accuracy can reach 10cm.
Coverage distance: Coverage distance > 1500 meters.
High stability: After the equipment is installed and debugged, there is no need for regular calibration and maintenance.
The system is easy to integrate and provides a position information API interface to obtain the position information of the crane in real time.
The UWB module crane positioning system effectively improves the efficiency of warehouse operation and management and reduces the risk control of personnel safety.
The principle and application of UWB ultra-wideband positioning technology of UWB module. UWB stands for UltraWideBand, ultra-wideband technology. Due to its high precision, high stability and high anti-interference, it has gradually become the mainstream.
When it comes to positioning technology, we are no strangers. From vehicle navigation to food delivery, taxi software and location technology are inseparable from our lives. Generally, we divide the positioning technology into indoor positioning and outdoor positioning according to the usage scenarios. Outdoor positioning mainly relies on global satellite positioning and navigation systems, such as GPS, Beidou, GLONASS and GALILEO. In addition, there are differentiated positioning technologies and cellular network positioning technologies for telecom operators’ base stations; indoor positioning technologies are mainly wireless technologies such as Bluetooth, WiFi, Zigbee, RFID, geomagnetic, and UWB.
UWB module What is UWB?
UWB stands for ULTraWideBand, ultra-wideband technology. Wireless transmission is achieved by sending and receiving extremely narrow pulses. Due to the extremely narrow pulse time and width, the bandwidth exceeds 500mHz. At first, UWB emerged as a communication technology for short-range and broadband wireless communication. Later, due to its ultra-wideband characteristics, people realized its value in the field of high-precision positioning, and the application of UWB in the field of positioning gradually became the mainstream.
Working principle of UWB module positioning technology:
The first step of UWB positioning is to measure the distance. The two-way time-of-flight method (TW-TOF, Twoway-Timeofflight) is used. Two-way flight distance between and receiving. Except for 2, this distance is a one-way distance.
Compared with indirect distance measurement technologies such as WIFI and Bluetooth that measure signal strength (RSSI) and signal angle of arrival (AOA), the speed of light is extremely stable and will not be affected by battery voltage, radio channels and antenna production processes.
The second step of UWB positioning is positioning. The location of the tag can be calculated by TOA (Time of Arrival) and TDOA (Time Difference of Arrival).
UWB module application scenarios:
UWB positioning technology can provide indoor/outdoor centimeter high-precision positioning, adding spatial information such as position and distance to people/vehicles/objects, making system decision-making more refined. In addition, the value of UWB module positioning itself is not only reflected in positioning, but also in many value-added applications such as historical trajectories, hotspot extraction, electronic attendance, and safety warning. Through the data analysis of these applications, work efficiency and safety can be improved.
Smart Factory
In the production process, the position management of people, machines and materials is becoming more and more important. Through accurate location data analysis, the location trajectory and working status analysis of each person, vehicle and material can be grasped in real time, so as to improve safety management and production capacity efficiency optimization.
Smart Power Plant
Driven by the construction of smart power plants, UWB module positioning system was introduced to integrate two-ticket management, video system, access control system, etc. Managers can view the activity track of operators/outsourced personnel in real time in the 3D virtual power plant; people count; danger warnings, etc.
Wisdom Justice
The UWB positioning system is combined with traditional supervision methods to meet the judicial management of visitors, make personnel in designated areas more intelligent, make up for supervision loopholes, greatly reduce management security risks, and realize prevention, control, verification, etc.
Smart construction site
Establish real-time accurate positioning system, linkage access control system, video system, large-screen system, etc., to realize the management, quantity statistics, behavior tracking, abnormal alarm of construction site, underground tunnel/subway and other construction personnel, and improve the safety management and production efficiency of construction site personnel .
Smart Warehousing
UWB module intelligent warehouse cargo positioning management system realizes dynamic management of materials, helps warehouse warehousing, warehousing, inventory, and search process management system, and improves the management level of existing warehouse cargo.
In addition, the UWB module positioning management system can also be applied to scenarios such as hospitals, pensions, exhibition halls, buildings, ports and terminals, providing strong data support for emergency management and security law enforcement.
