Antenna Delay Calibration for Wireless Nodes
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Solution Overview
Problem
Existing wireless communication or distance measuring chips face challenges in accurately calibrating antenna delays, leading to errors in indoor distance measurements due to hardware issues, which are difficult and costly to address with dedicated equipment.
Innovation Solution
A method and system for antenna delay calibration that involves calculating detection distances and actual delays using specific formulas, allowing for simultaneous measurement and calibration of multiple nodes, reducing costs and increasing applicability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If dedicated equipment is used to measure and calibrate each wireless communication or distance measuring chip, then measurement precision is improved, but device complexity and cost increase
Solution Approach 1:
The patent introduces a server as an intermediary that receives signal transmission data from multiple nodes, performs centralized delay calculations using detection distance formulas, and distributes calibration results. This mediator approach allows complex calibration computations to be performed remotely without requiring complex dedicated measurement equipment at each node, thereby maintaining measurement precision while reducing local device complexity
Solution Approach 2:
The patent creates a universal calibration system where a single server can calibrate multiple different nodes (wireless communication chips, distance measuring chips) using the same detection distance calculation formulas and procedures. This multi-functional approach eliminates the need for dedicated calibration equipment for each chip type, reducing overall system complexity while maintaining calibration precision
2Measurement precision
If dedicated equipment is used to measure and calibrate each chip, then measurement precision is improved, but productivity decreases due to batch measurement difficulties
Solution Approach 1:
The patent merges multiple calibration operations into a single unified process. The server simultaneously receives signal transmission data from multiple nodes and performs delay calculations for all of them using the same detection distance formulas. This combining of parallel calibration tasks into one centralized operation maintains precision for each node while dramatically improving batch processing productivity
Solution Approach 2:
The system performs preliminary data collection by having all nodes transmit signals and collect detection distance data before the actual delay calculation phase. This preliminary preparation of measurement data allows the server to efficiently process multiple nodes in batch without compromising individual measurement precision, as all necessary data is gathered in advance for unified processing
3Measurement precision
If traditional calibration methods are used, then measurement precision may be maintained, but ease of operation deteriorates due to numerous inconveniences
Solution Approach 1:
The patent implements self-service calibration where nodes automatically transmit their signal data to the server, and the server automatically performs delay calculations and sends calibration results back. This automated self-service approach eliminates manual intervention in the calibration process, making operations convenient while maintaining precision through consistent application of detection distance formulas
Solution Approach 2:
The system establishes a feedback loop where calibration results are automatically transmitted from the server back to the respective nodes. This automated feedback mechanism ensures that precision calibration data is delivered directly to each node without manual intervention, improving ease of operation while maintaining the precision benefits of formal calibration procedures
Data Source
AI summary
The present invention relates to positioning technology and more particularly, to a method, device and system for antenna delay calibration. An embodiment of the present invention provides a method for antenna delay calibration, including the following steps: receiving delay and location distance between a first node and a second node; inputting the delay between the first node and the second node into a preset detection distance calculation formula to obtain a detection distance between the first node and the second node; inputting the location distance and detection distance into a preset actual delay calculation formula to obtain an actual delay; and inputting the actual delay into a node to calibrate and verify the node. The embodiment of the present invention obtains the actual delay by calculating the location distance and detection distance. Compared with dedicated equipment, each node is measured and calibrated, the implementation cost is low, it is convenient and fast, and the applicability is high, and batch measurements are realized as well.