Portable Security Device Using Pulsed Light and Imaging
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Solution Overview
Problem
Current security devices lack effective means to prevent crimes and transmit relevant information, such as images of crime scenes, to communication networks in a reliable and user-friendly manner.
Innovation Solution
A security device with a housing, a switch operable by hand, a microcontroller, a light-emitting element, an imaging unit, and a communication unit that emits pulsed light, captures images, and transmits information to a network, including positional data, to prevent crimes and confirm their occurrence.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a security device emits pulsed light to deter crimes, then crime prevention capability is improved, but energy consumption increases
Solution Approach 1:
The security device emits light in pulsed intervals rather than continuously. The control unit activates the light emitting element for specific durations followed by intervals where the light is off, maintaining deterrence effectiveness while significantly reducing overall energy consumption compared to continuous illumination.
2Reliability
If the security device includes both light emission and image capture functions, then crime prevention and investigation capability is improved, but device complexity increases
Solution Approach 1:
The security device integrates multiple functions including light emitting elements, an imaging unit with image sensor, communication unit, and control unit into a single consolidated device. This merging of functions that would traditionally require separate devices (light source, camera, communication equipment) reduces overall system complexity while maintaining comprehensive crime prevention and investigation capabilities.
Solution Approach 2:
The control unit serves multiple purposes: it controls the light emitting element, manages the imaging unit operation, processes image data, and coordinates communication with external devices. This multi-functional control approach reduces the need for separate control mechanisms for each function, thereby reducing device complexity.
3Loss of information
If the security device transmits image information and positional data to the network, then information reliability for crime investigation is improved, but data transmission requirements and device complexity increase
Solution Approach 1:
The control unit pre-processes image data captured by the imaging unit before transmission, and integrates positional information from the location detection unit. By preparing and organizing data in advance, the device reduces the complexity of real-time data processing during transmission and ensures reliable information delivery to external devices or law enforcement agencies.
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 device effectively deters crimes by emitting pulsed light and transmits critical information to the network, enhancing crime prevention and investigation capabilities.
Implementation Method 1
a light-emitting element configured to be supplied with the constant current pulse and configured to emit pulsed light
Data Source
AI summary
A portable information terminal is provided. The portable information terminal includes a housing, a light-emitting region provided for a first surface of the housing, an imaging unit provided for said first surface of the housing, and a controller for supplying a control pulse signal and a shutter signal. The light-emitting region emits pulsed light in accordance with the control pulse signal. The imaging unit performs imaging in an emission direction of the pulsed light and supplies image information in accordance with the shutter signal.