Motion-Aware Nodal Seismic Unit for Theft Detection
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Solution Overview
Problem
Conventional seismic surveys using nodal sensors face challenges in accessing real-time or near-real-time information regarding the health, condition, and location of sensors after deployment, leading to issues like theft going unnoticed and discouraging their use.
Innovation Solution
The implementation of a nodal seismic unit equipped with a GPS receiver, motion sensor, and LPWAN radio transceiver, which transmits unplanned movement signals and changes operating states in response to detected motion, enabling remote monitoring and alerting operators of potential theft or unauthorized movement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If nodal sensors are deployed without physical carriers such as cables, then the sensors achieve lighter weight, easier deployment, and lower operational costs, but real-time monitoring of sensor health, condition, and location becomes difficult
Solution Approach 1:
The patent implements a feedback mechanism where motion sensors continuously monitor the nodal sensor's movement status and transmit this information via radio communication to remote operators. This allows real-time monitoring of sensor location and condition without requiring physical cable connections, thus resolving the contradiction between ease of deployment and real-time information availability.
Solution Approach 2:
The patent introduces radio communication equipment and motion sensors as intermediaries between the deployed nodal sensors and remote operators. These intermediaries enable information transmission without direct physical connection, allowing operators to monitor sensor status remotely while maintaining the cable-free deployment advantages.
2Productivity
If nodal sensors are left unattended in the field, then deployment efficiency is improved, but theft and unauthorized movement cannot be detected
Solution Approach 1:
The motion sensor continuously monitors for unauthorized movement and provides immediate feedback to remote operators when theft or displacement is detected. This allows sensors to remain unattended during deployment while maintaining security monitoring, resolving the contradiction between deployment efficiency and sensor security.
Solution Approach 2:
The system performs preliminary monitoring setup before deployment, with motion sensors pre-configured to detect and report unauthorized movement. This preliminary security measure is already in place when sensors are deployed unattended, preventing theft issues rather than reacting to them afterward.
3Reliability
If motion monitoring and communication equipment is added to nodal sensors, then real-time tracking and security are improved, but device complexity increases
Solution Approach 1:
The patent integrates multiple functions into the nodal sensor unit, including motion sensing, GPS location tracking, and radio communication capabilities. By making the nodal sensor a multi-functional device that performs both seismic data collection and security monitoring, the overall system complexity is reduced compared to having separate monitoring 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
This solution provides remote operators with real-time information on the position, health, and status of nodal seismic units, enhancing security and operational efficiency by detecting and reporting unplanned movements, thus reducing theft and improving deployment reliability.
Implementation Method 1
a motion sensor disposed in the enclosure; the control unit may be configured to transmit an unplanned movement signal to a remote operator using the LPWAN radio transceiver if the control unit receives a signal from the motion sensor indicative of an acceleration greater than a preset level
Implementation Method 2
a GPS receiver disposed in the enclosure
Implementation Method 3
a LPWAN radio transceiver disposed in the enclosure; the control unit may be configured to transmit an unplanned movement signal to a remote operator using the LPWAN radio transceiver
Data Source
AI summary
A nodal seismic unit for acquiring seismic information includes an enclosure, a GPS receiver disposed in the enclosure; a motion sensor disposed in the enclosure; a LPWAN radio transceiver disposed in the enclosure; and a control unit disposed in the enclosure. The control unit is configured to transmit an unplanned movement signal to a remote operator using the LPWAN radio transceiver if the control unit receives a signal from the motion sensor indicative of an acceleration greater than a preset level. Additionally, the control unit may be configured to change an operating state of the nodal seismic unit in response to detecting a predetermined pattern of motion using the motion sensor.