Truck Cargo Door Security System with RF Detection

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Solution Overview

Problem

Trucks are vulnerable to theft and vandalism due to unattended cargo, with risks of cargo doors being left open, leading to exposure and loss of valuable goods, including business documents, which can result in economic losses and safety hazards.

Innovation Solution

A truck security system that includes sensing means to detect open cargo doors, RF signal transmission means to alert personnel, and control means to activate an alarm if the door is left open, with adjustable output range and override signals to manage alarm timing and range, ensuring that the cargo door is closed before the engine can be started.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If a truck cargo door is left open during loading or unloading, then cargo can be accessed and loaded/unloaded, but unauthorized individuals can steal or vandalize the cargo and confidential documents are exposed

Engineering Contradiction:
Improvecargo loading and unloadingVSAvoidtheft and vandalism
Core Design Contradiction:
Ease of operationVSObject-affected harmful factors

Solution Approach 1:

The system performs preliminary detection of open cargo doors and issues warnings to operators before theft or vandalism can occur. The sensing means continuously monitor door status and the control means activates alarm means or prevents engine startup in advance, creating a deterrent effect before the harmful act can be completed.

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The system establishes a feedback loop where sensing means detect door status and continuously communicate this information to the control means, which then provides real-time feedback through alarm means or engine startup prevention. This closed-loop feedback ensures operators are immediately aware of security risks and can take corrective action.

Inventive Principle:
Principle #23Feedback

2Object-affected harmful factors

If the driver is monitored closely to ensure doors are closed, then cargo security is improved, but the driver's productivity and convenience are reduced

Engineering Contradiction:
Improvecargo exposureVSAvoiddriver efficiency
Core Design Contradiction:
Object-affected harmful factorsVSProductivity

Solution Approach 1:

The security system performs self-monitoring of cargo door status without requiring continuous human supervision. The sensing means and control means automatically detect and respond to open door conditions, freeing the driver from constant monitoring duties while maintaining security. The system serves itself by autonomously detecting and responding to security threats.

Inventive Principle:
Principle #25Self-service

3Object-affected harmful factors

If multiple cargo doors are monitored simultaneously, then comprehensive security coverage is achieved, but system complexity increases

Engineering Contradiction:
Improveunauthorized disclosureVSAvoidmonitoring system
Core Design Contradiction:
Object-affected harmful factorsVSDevice complexity

Solution Approach 1:

The control means is designed as a universal monitoring system that can handle multiple cargo doors through a single integrated unit. Rather than requiring separate monitoring systems for each door, the control means processes signals from multiple sensing means and coordinates alarm means or engine startup prevention across all doors, reducing overall system complexity while maintaining comprehensive coverage.

Inventive Principle:
Principle #6Universality (Multi-functionality)

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 system effectively prevents unauthorized disclosure and theft of cargo by alerting personnel of open doors and preventing engine startup until doors are closed, thereby reducing economic losses and ensuring safety during transport.

Implementation Method 1

RF signal receiving means to receive RF signals and convey the signals to the control means... RF transmission means continuously transmits, at regular intervals, an RF signal receivable by the RF signal receiving means

Methodology Applied
Scientific EffectRF signal transmission and reception: Electromagnetic Induction

Data Source

PatentUS7637556B2Truck security system
Publication Date: 2009.12.29 BABACO ALARM SYSTEMS INC
  • US7637556B2 patent drawing
  • US7637556B2 patent drawing
  • US7637556B2 patent drawing

AI summary

The truck security system emits an audible alarm when a cargo door is open and a driver or other person working on the truck goes beyond a defined distance, generally the immediate vicinity, from the truck exposing cargo to possible theft. In a truck having more than one cargo door, an alarm is sounded if more than one door is open simultaneously. If an attempt is made to start the engine with a door open, the system sounds an alarm in the cab and ignition is prevented. The system includes sensing means to detect if cargo doors are opened or closed, control logic circuitry and a clock, a RF signal receiver, an ignition cut-off, an audible alarm and a battery to independently power the security system, all of which are situated on the truck.