Adaptive Gateway Transmitter Power for Safe Object Detection
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Solution Overview
Problem
Existing threat detection systems face challenges in maintaining high field strength for detecting small objects while adhering to health and safety guidelines, particularly in multi-sensor gateways, and require efficient power management for battery-operated systems to extend battery life during varying throughput phases.
Innovation Solution
An adaptive transmitter system that adjusts power levels based on proximity information, switching between high and low power modes to meet health and safety requirements and optimize power consumption, using proximity sensors and intelligent detection to manage field strength and patron presence.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the field strength is increased near the pillar to improve detection sensitivity, then the detection capability for small objects is improved, but the health and safety requirements are violated at points closer to the source field
Solution Approach 1:
The transmitter power is made dynamic rather than static, adjusting automatically based on detected patron positions. The system switches between high power mode (when no patrons are present or they are far away) and low power mode (when patrons are close to pillars), resolving the contradiction between maintaining high detection capability and ensuring health safety compliance.
Solution Approach 2:
The system uses proximity sensors to detect patron positions and provides feedback to the transmitter control. This closed-loop feedback mechanism allows the transmitter to adjust its power output in real-time based on the actual spatial distribution of patrons, ensuring both detection performance and safety requirements are met.
2Measurement precision
If the transmitter operates at high power continuously to maintain detection capability, then the detection sensitivity is improved, but the power consumption increases and battery life decreases
Solution Approach 1:
The transmitter operates in periodic pulses rather than continuously. High power transmission occurs only when needed (when patrons are detected in the gateway), and low power or idle state is maintained during periods when no detection is required. This periodic operation significantly reduces average power consumption while maintaining detection sensitivity when needed.
Solution Approach 2:
The transmitter power level is dynamically adjusted based on real-time detection of patron presence and throughput conditions. During high throughput phases, the transmitter operates at higher power more frequently, while during low throughput phases, it reduces power consumption, optimizing the balance between detection sensitivity and energy usage.
3Productivity
If the gateway width is increased to improve throughput capacity, then the productivity is improved, but the field strength at the center of the gateway decreases making detection harder
Solution Approach 1:
The transmitter power is dynamically adjusted based on the patron's position within the gateway. As patrons move through different zones (center vs. near pillars), the system adapts power levels to maintain consistent detection capability across the entire gateway width, enabling wider gateway design without sacrificing detection performance.
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 detection capabilities for small objects by maintaining optimal field strength within safety limits and extends battery life by dynamically adjusting power consumption based on throughput and patron presence.
Implementation Method 1
An active threat detection system operates based on sending a current through a transmission loop, and receiver coils receiving the primary and secondary backscatter from the object
Implementation Method 2
the field strength that can be produced with the static magnet array and transmitter loops
Data Source
AI summary
A system and method of an adaptive transmitter for an object detection system having an adaptive transmitter that enables changing power levels to meet health and safety requirements based on proximity information. Adaptive transmitters are placed on gateway pillars of a multi-sensor gateway system using an adaptive transmitter configuration. A patron passes through the center of the gate and always stays far enough away from the transmitters such that the transmitter operates in a high field configuration and remain under appropriate health and safety levels. A patron can also move close to a pillar and enter the second proximity boundary wherein the system would automatically switch to a lower power setting to remain within the appropriate health guidelines. A two-mode power level configuration can be extended to a continuous mode configuration where the power levels are adjusted dynamically. Furthermore, power consumption can be reduced and battery lifetime prolonged.