Seismic Sensor Lightning Protection Grounding Clamp
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Solution Overview
Problem
Seismic sensor arrays are vulnerable to damage from lightning strikes, which can disrupt data acquisition and processing in reflection seismology, leading to potential loss of valuable subsurface formation data.
Innovation Solution
A lightning strike kit for seismic sensor assemblies includes an electrically conductive grounding clamp and protection circuitry to dissipate lightning energy through a base or spike, reducing the impact of lightning strikes and minimizing damage to sensor units.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If seismic sensor arrays are deployed in field environments for data acquisition, then subsurface formation data can be collected, but the sensor arrays become vulnerable to lightning strikes causing damage and data loss
Solution Approach 1:
The patent applies the 'Blessing in disguise' principle by capturing the harmful lightning strike energy through capture rods and redirecting it through a controlled path via the grounding clamp to a remote grounding point. This converts the potentially damaging lightning energy into a controlled electrical discharge that is safely dissipated into the ground, protecting the sensor array while maintaining operational reliability.
Solution Approach 2:
The grounding clamp serves as an intermediary component between the cable connectors and the ground. It provides a dedicated low-resistance electrical path that mediates the lightning energy transfer, separating the harmful electrical discharge from the sensitive sensor electronics and directing it safely to ground through the cable shield and grounding system.
2Object-affected harmful factors
If lightning protection components are added to seismic sensor assemblies, then protection from electrical surges is provided, but device complexity increases
Solution Approach 1:
The grounding clamp is designed to serve multiple functions: it provides mechanical support for the capture rods, creates electrical connections between the cable shields and grounding path, and facilitates the discharge of lightning energy. This multi-functionality reduces the need for separate dedicated components, thereby limiting the increase in device complexity while providing comprehensive lightning protection.
Solution Approach 2:
The cable shield itself is utilized as part of the lightning protection path, serving dual purposes: its normal function of shielding and signal transmission, and its function as a conductor for lightning energy to ground. This self-service approach eliminates the need for entirely separate grounding conductors, reducing overall system complexity.
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 solution effectively mitigates lightning-induced damage to seismic sensor arrays by providing a reliable grounding path for lightning energy, thereby reducing the radius of impact and protecting the sensor units from electrical surges.
Implementation Method 1
A lightning strike kit for seismic sensor assemblies includes an electrically conductive grounding clamp and protection circuitry to dissipate lightning energy through a base or spike
Data Source
AI summary
A seismic sensor assembly includes a sensor body; cable connectors operatively coupled to the sensor body; and a grounding clamp operatively coupled to the cable connectors. A lightning strike kit for a seismic sensor assembly can include the grounding clamp as an electrically conductive component for electrical coupling to a base and/or a spike of a seismic sensor assembly.