Utility Pole Tilt Sensors for Deflection Monitoring
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Solution Overview
Problem
Utility poles are difficult to inspect accurately, especially during extreme weather conditions, and frequent inspections are costly and resource-intensive, with potential hazards from downed poles posing safety and financial risks.
Innovation Solution
A utility pole assembly equipped with two or more tilt sensors spaced along its length, capable of measuring tilt angles and deflection, allowing for continuous or periodic monitoring of pole conditions to detect imminent failure or soil movement, with sensors capable of distinguishing between elastic and inelastic deflections and triggering alarms for immediate attention.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If utility poles are inspected periodically by field technicians, then pole conditions can be assessed, but inspections cannot be conducted during extreme weather conditions and require significant manpower and time
Solution Approach 1:
The utility pole is equipped with self-monitoring sensors (tilt sensors, accelerometers, strain gauges) that automatically detect and report pole conditions without requiring human inspectors. The system performs self-diagnosis by continuously measuring tilt angles, vibration patterns, and structural stress, enabling condition assessment regardless of weather conditions or inspector availability.
Solution Approach 2:
Manual visual inspection by field technicians is replaced with electronic sensing systems. The mechanical process of inspectors physically examining poles is substituted with automated sensors that electronically detect tilt, vibration, and stress parameters, allowing continuous monitoring without human intervention.
2Reliability
If inspection frequency is increased in high risk areas, then detection of potential failures improves, but costs and resource requirements increase significantly
Solution Approach 1:
Instead of periodic inspections, the sensor system provides continuous monitoring of pole conditions. Tilt sensors, accelerometers, and strain gauges operate continuously to detect tilt angles, vibration patterns, and structural stress in real-time, enabling immediate detection of potential failures without requiring repeated manual inspection cycles.
Solution Approach 2:
The monitoring system provides continuous feedback on pole health status through measured parameters (tilt angles, vibration frequencies, strain levels). This feedback mechanism allows utility companies to respond immediately when thresholds are exceeded, replacing the need for frequent proactive inspections with reactive, condition-based monitoring that reduces overall resource requirements.
3Object-affected harmful factors
If inspections are conducted when weather conditions permit, then inspector safety is ensured, but the structural pole strength is not stressed and may not reflect accurate data
Solution Approach 1:
The sensor system is installed and calibrated in advance on each utility pole before any extreme weather events occur. The preliminary setup enables the system to automatically capture and record pole behavior during storms, high winds, or other extreme conditions, providing accurate stress data without requiring inspectors to be present during dangerous weather.
Solution Approach 2:
Electronic sensors serve as intermediaries between the pole structure and the monitoring system. The sensors measure physical parameters (tilt, vibration, stress) during extreme weather and transmit this data remotely, allowing accurate assessment of pole performance under stress without exposing human inspectors to hazardous conditions.
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
Enhances the safety and efficiency of utility pole inspections by providing real-time data on pole conditions, reducing the risk of accidents and outages, and optimizing maintenance schedules by identifying potential failures before they occur.
Implementation Method 1
Movement experienced by the tilt sensor can produce a voltage output, or an analog signal, corresponding to a tilt angle
Data Source
AI summary
A utility pole assembly includes an elongated structure and sensors mounted on the elongated structure for detecting and determining deflection and/or tilt. The elongated structure has a first end configured to be fixed into a ground and a second end that is free and located opposite the first end. A first sensor is positioned on the elongated body at or near the second end, and a second sensor is positioned on the elongated body between the first tilt sensor and the first end of the elongated body. The first and second sensors each include sensor circuitry configured for measuring movements in tilt values in at least two axes, which can be converted to tilt angles. The first and second tilt sensors, in combination, are configured for determining and distinguishing between elastic deflection of the elongated body and tilt of the elongated body.