Rotating Antenna Segmentation for Continuous Data Transmission
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Solution Overview
Problem
Existing construction machines face challenges in reliably transmitting information from rotating system areas, such as compactor rollers, to non-rotating system areas without interruptions due to distance variations during rotation.
Innovation Solution
The implementation of a construction machine design with a rotatable system area equipped with multiple transmission and receiving antennas, a signal splitter for simultaneous signal distribution, and a data bus system like CAN, along with an induction energy transmission arrangement using transmitter and receiver coils, ensures reliable and continuous data and energy transfer.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a single transmission antenna is used on the rotating compactor roller, then the device complexity is reduced, but the reliability of data transmission is compromised due to temporary distance increases during rotation
Solution Approach 1:
The single transmission antenna is segmented into multiple transmission antennas (at least two) distributed around the circumference of the rotating compactor roller. This segmentation ensures that at least one antenna remains within effective communication distance of the receiving antenna throughout the rotation cycle, thereby maintaining reliable data transmission without requiring a single complex high-power antenna.
Solution Approach 2:
The solution transitions from a single-point transmission (one antenna) to a distributed spatial arrangement (multiple antennas around the circumference). By utilizing the circumferential dimension of the rotating roller, the system ensures continuous coverage and maintains reliable communication links regardless of the roller's rotational position.
2Reliability
If multiple transmission and receiving antennas are used to ensure continuous radio connection, then the reliability of data transmission is improved, but the device complexity increases
Solution Approach 1:
The antenna system is segmented into multiple transmission antennas distributed around the rotating roller and multiple receiving antennas on the stationary machine frame. This segmentation creates multiple potential communication paths, ensuring that at least one path remains active during rotation, thereby improving reliability while distributing the complexity across simpler individual components.
Solution Approach 2:
The system utilizes the spatial dimension by arranging transmission antennas around the circumference of the rotating roller and positioning receiving antennas at different locations on the stationary frame. This spatial distribution creates redundant communication paths in different spatial zones, ensuring continuous connection reliability.
3Ease of operation
If wireless data transmission is implemented from the rotating system area to the non-rotating system area, then the ease of operation is improved, but the reliability deteriorates due to distance variations during rotation
Solution Approach 1:
The wireless transmission system is segmented into multiple transmission antennas on the rotating roller and multiple receiving antennas on the stationary frame. This segmentation ensures that as the roller rotates, at least one transmission antenna remains within effective range of at least one receiving antenna, maintaining reliable wireless communication without requiring physical connections.
Solution Approach 2:
The system resolves the reliability issue by transitioning from a single-point wireless link to a distributed spatial wireless network. By utilizing the circumferential dimension of the rotating roller and positioning multiple antennas, the system maintains continuous wireless connectivity despite rotational distance variations.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This solution provides a permanent and error-free radio connection and energy supply to sensors and data transmission units on rotating compactor rollers, ensuring uninterrupted data transmission and efficient energy distribution regardless of the rotational positioning.
Implementation Method 1
a transmitter coil ( 28 ) surrounded by a resonant circuit ( 66 ) with a resonant circuit coil ( 68 ) and a resonant circuit capacitor ( 69 ). The receiver coil ( 34 ) is provided on the rotating system area, that is, on the compactor roller ( 20 ).
Implementation Method 2
The transmitter coil ( 28 ) surrounded by a resonant circuit ( 66 ) with a resonant circuit coil ( 68 ) and a resonant circuit capacitor ( 69 ). The resonant circuit ( 66 ) is excited to oscillate with a very high amplitude due to the frequency tuning mentioned above. This amplifies the alternating magnetic field generated by the transmitter coil ( 28 ).
Data Source
Figure 1
Figure 2~3
Figure 4~5
AI summary
A construction machine comprises: - a system area rotatable about a pivot axis with respect to a machine frame, - at least one sensor (70), a data transmission unit (72) with at least one transmitting antenna (74) and a first data transmission arrangement (76) for transmitting data from the at least one sensor (70) to the data transmission unit (72) on the rotatable system area, - a data reception unit (82) with at least one receiving antenna (80), a data evaluation system (86) and a second data transmission arrangement (84) for transmitting data from the data reception unit (82) to the data evaluation system (86) on the machine frame, wherein the data transmission unit (72) has at least two transmitting antennas (74) and/or the data reception unit (82) has at least two receiving antennas (80), and wherein the data transmission unit (72) is associated with a signal divider for distributing the output signal of the data transmission unit (72) to several transmitting antennas (74). suchthat all transmitting antennas (74) simultaneously and without interruption transmit essentially the same output signal.