Infrared LED Driver Programming via Signal Substitution
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Solution Overview
Problem
The existing methods for setting the output current for light emitting diode (LED) driving devices are time-consuming and prone to errors, especially when dealing with multiple types of LEDs, as they require manual adjustment using resistors, which can lead to incorrect settings.
Innovation Solution
A light emitting diode driving system that utilizes an infrared ray burning device to transmit current setting commands to a light emitting diode driving device, which includes an infrared ray receiving unit, a signal transforming unit, a storage unit, a pulse width modulating unit, and a diode driving unit, allowing for precise control of the output current through pulse width modulation signals, thereby eliminating the need for resistors and reducing production time and errors.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If manual adjustment using resistors is used to set output current for different LED types, then the driving device can be produced, but the production time increases and error rate increases due to manual intervention
Solution Approach 1:
The patent replaces the mechanical/manual process of selecting and installing resistors with an automated infrared programming system. The infrared ray receiving unit receives programming signals that automatically configure the driving device's output current parameters, eliminating the need for manual resistor selection and installation. This substitution of mechanical operations with automated signal processing resolves the contradiction by maintaining reliability through precise digital programming while dramatically reducing production time.
Solution Approach 2:
The driving device is designed with self-programming capability through its infrared ray receiving unit and internal processing components. The device can automatically configure its own output current parameters by receiving programming signals that contain the necessary configuration data. This self-service approach eliminates the need for external manual intervention in the current setting process, thereby reducing production time while ensuring accurate current configuration through automated parameter programming.
2Adaptability or versatility
If multiple types of LEDs require different driving currents, then the driving device can be customized, but the complexity of production increases due to needing different resistors for each type
Solution Approach 1:
The patent implements a universal driving device design that can accommodate multiple LED types through a single standardized platform. The infrared ray receiving unit and internal processing system enable the device to receive and process programming signals for different LED configurations, allowing one driving device design to serve multiple LED types. This multi-functionality approach maintains adaptability across different LED types while simplifying production by eliminating the need to manufacture separate driving devices with different resistors for each LED type.
Solution Approach 2:
The patent enables configuration of different output current parameters through programmable settings rather than fixed hardware components. The driving device can change its operational parameters by receiving programming signals that modify its internal configuration, allowing the same physical device to adapt to different LED types by changing its current output parameters. This parameter-based configuration approach maintains versatility while reducing production complexity by eliminating the need to physically change resistors or hardware components for different LED types.
3Manufacturing precision
If resistors are used to set output current, then the current can be controlled, but the risk of incorrect resistor selection increases leading to production errors
Solution Approach 1:
The patent replaces the error-prone manual mechanical process of resistor selection and installation with an automated digital programming system. The infrared ray receiving unit receives precisely coded programming signals that automatically configure the driving device's current parameters, eliminating human error in resistor selection. This substitution ensures manufacturing precision through accurate digital parameter programming while improving reliability by removing the source of manual errors entirely.
Solution Approach 2:
The patent implements a programming system that provides feedback verification to ensure correct configuration. The infrared programming process includes signal transmission and reception that can verify successful programming, ensuring that the driving device is correctly configured for the intended LED type. This feedback mechanism prevents production errors by confirming that the correct current parameters have been programmed, thereby improving both manufacturing precision and reliability.
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 enables efficient and accurate setting of output currents for multiple devices simultaneously, reducing production time and minimizing errors by using infrared signals to control the LED driving system, thus streamlining the production process and ensuring correct current settings.
Implementation Method 1
The infrared ray receiving unit receives a burning signal transmitted by the infrared ray burning device
Data Source
AI summary
A light emitting diode driving system includes an infrared ray burning device and a light emitting diode driving device. The light emitting diode driving device includes an infrared ray receiving unit, a signal transforming unit, a storage unit, a pulse width modulating unit and a diode driving unit. The infrared ray receiving unit receives a burning signal transmitted by the infrared ray burning device; the signal transforming unit transforms the burning signal into a current control command and transmits it to the storage unit. The signal transforming unit generates a current control signal in accordance with the current control command in the storage unit. The pulse width modulating unit generates a pulse width modulation output current control signal according to the current control signal. The diode driving unit drives the light emitting diode by the pulse width modulation output current control signal.