Magnetic Proximity Sensor Assembly with Visual Alignment Indicator
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing magnetic field sensors and security alarm sensors lack effective indicators to signify the presence or absence of a magnetic field or communication range with RFID tags, and they often require manual adjustment for proper positioning, which can be time-consuming and inefficient.
Innovation Solution
A magnetic field sensor with a microprocessor and indicator that turns on when a magnetic field is sensed and off when not sensed, featuring a tamper switch and power management to conserve energy, and an RFID reader that indicates proximity to an RFID tag by turning on when within a predetermined distance and off when outside, with a power-saving mechanism to prevent unnecessary operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a magnetic field sensor is equipped with an indicator to show magnetic field presence, then the ease of operation is improved, but the energy consumption increases
Solution Approach 1:
The indicator operates periodically rather than continuously - it activates only during specific states (magnetic field detected, tamper event occurred, or initialization phase) and remains inactive during normal operation, thereby reducing overall energy consumption while still providing necessary operational feedback
Solution Approach 2:
The indicator provides visual feedback about system state (magnetic field presence, tamper status, initialization progress) without requiring continuous power, allowing users to understand sensor status and make appropriate adjustments while minimizing energy usage
2Ease of operation
If the indicator remains continuously operable to show magnetic field presence, then the ease of operation is improved, but the duration of battery life deteriorates
Solution Approach 1:
The indicator is designed to operate only during specific periods - during initialization after pull strip removal, when magnetic field changes are detected, or when tamper events occur - rather than remaining continuously active, thus extending battery life while maintaining operational utility
Solution Approach 2:
The system automatically manages indicator operation based on detected conditions (magnetic field presence, tamper switch state, initialization phase) without requiring continuous user intervention or power supply, optimizing the balance between usability and energy conservation
3Manufacturing precision
If the sensor requires manual positioning adjustment for proper alignment, then the manufacturing precision is improved, but the productivity deteriorates
Solution Approach 1:
The indicator provides real-time visual feedback during installation, showing when the magnet is within the operational magnetic field range of the sensor, allowing installers to quickly determine proper positioning without time-consuming trial and error adjustments
Solution Approach 2:
The sensor assembly self-indicates its operational status through the indicator light, which automatically shows when proper alignment is achieved, eliminating the need for complex alignment tools or procedures and enabling installers to complete positioning efficiently
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 provides clear visual or auditory feedback for magnetic field presence or RFID proximity, aiding in sensor placement and energy efficiency, ensuring accurate positioning and reducing installation time while conserving battery life.
Implementation Method 1
a device which senses a presence or an absence of a magnetic field
Implementation Method 2
an indicator which turns on when a magnetic field is sensed and turns off when a magnetic field is not sensed
Data Source
AI summary
There is provided a method of installing a magnetic proximity sensor including positioning the magnetic field sensor in a desired location and positioning a magnet in a desired location relative to the magnetic field sensor, with an indicator of the sensor continuing to be turned on during the predetermined period of time when the magnetic field generated by the magnet is sensed by the magnetic field sensor, and being turned off during the predetermined period of time when the magnetic field generated by the magnet is not sensed by the magnetic field sensor. The indicator light thus assists in determining proper relative positioning of the magnet and the magnetic field sensor. If after the predetermined period of time more time is needed to install the magnetic proximity sensor, the method includes initiates another predetermined period of time by removing and replacing a lid of the magnetic proximity sensor.