Construction Equipment Overvoltage Suppression via Frame Common Shunt
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Solution Overview
Problem
Construction equipment is vulnerable to electromagnetic phenomena such as lightning and electromagnetic interference, which can cause overvoltages and damage to electrical components, leading to operating system failures and fire hazards due to its conductive structure and susceptibility to transient voltages and currents.
Innovation Solution
An overvoltage suppression system is implemented, which includes a communication network with nodes electrically connected via a data line, where semiconductor devices like thyristors are connected between the data line and the frame of the construction equipment, providing a common electrical point to shunt overvoltages to the frame common, thereby protecting the equipment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If construction equipment uses a conductive metal structure, then mechanical strength and structural integrity are improved, but susceptibility to electromagnetic phenomena and overvoltages increases
Solution Approach 1:
A semiconductor device is introduced as an intermediary component between the data line and the conductive frame. This mediator provides conditional electrical connectivity: it remains isolated during normal operation but activates to shunt overvoltages to the frame when voltage exceeds a threshold, thus protecting the communication network while utilizing the frame's inherent conductivity for structural strength.
2Adaptability or versatility
If construction equipment is equipped with tall structures, then operational capability is improved, but attraction of electric and magnetic fields increases
Solution Approach 1:
The patent converts the harmful effect of tall structures attracting electromagnetic fields into a protective mechanism. The same conductive frame that attracts fields is used as a shunt path for overvoltages. By providing a controlled discharge path through semiconductor devices, the frame's conductivity becomes beneficial for protecting electronic components from lightning and electromagnetic phenomena.
3Reliability
If semiconductor devices are added to suppress overvoltages, then protection against electromagnetic phenomena is improved, but device complexity increases
Solution Approach 1:
Instead of implementing a complex system-wide protection mechanism, the patent applies local quality by placing simple semiconductor devices only at critical connection points where data lines interface with the frame. This localized approach provides effective overvoltage suppression at key vulnerability points without requiring complex protection systems throughout the entire equipment.
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
The system effectively suppresses overvoltages by conducting them to the frame common, reducing the risk of damage from electromagnetic interference and transient voltages, thereby enhancing the reliability and safety of construction equipment.
Implementation Method 1
A semiconductor device may be electrically connected with the data line... The frame common may be adapted to include a common electrical point of the communication network... providing a common electrical point to shunt overvoltages to the frame common
Data Source
AI summary
An overvoltage suppression system is disclosed, such as for construction equipment, for protecting the construction equipment from overvoltages that may occur in day to day operations. An overvoltage suppression system for construction equipment may have a communication network that includes nodes. A data line may be used to electrically connect the nodes of the communication network. A semiconductor device may be electrically connected with the data line. Also, a frame of the construction equipment may be electrically connected with the semiconductor device, where the frame may be a frame common. The frame common may be adapted to include a common electrical point of the communication network.