Self-Detecting Electronic Connector Using Differential DC Bias
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Solution Overview
Problem
Existing electrical connectors lack an effective method to detect connection status when all pins are utilized for data or power, making it difficult to determine if two connectors are coupled or not.
Innovation Solution
The implementation of differential amplifiers, capacitive coupling, and DC biasing circuits in connector circuits, where unequal DC biases are applied to each connector, changing to an intermediate value upon connection, allowing for detection of connection status by monitoring the DC bias magnitude changes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If all pins are utilized for data or power transmission, then the data and power transmission capability is improved, but the ability to detect connection status deteriorates
Solution Approach 1:
The existing pins are made multi-functional by enabling them to serve both data/power transmission and connection detection purposes simultaneously. The differential amplifier circuit monitors voltage changes on the same pins used for data transmission, allowing one pin to perform multiple functions without requiring additional dedicated detection pins.
Solution Approach 2:
A feedback mechanism is implemented where the differential amplifier continuously monitors the voltage potential difference on the connector pins and provides a connection status signal back to the system. This feedback loop enables real-time detection of connection state by detecting changes in electrical characteristics caused by the physical connection or disconnection of the connector.
2Difficulty of detecting and measuring
If spare pins are used for connection detection, then the connection status detection capability is improved, but the device complexity increases
Solution Approach 1:
The invention eliminates the need for separate dedicated detection pins by making the existing data pins multi-functional. The same pins that transmit data are also used for connection detection through the differential amplifier circuit, thereby reducing overall device complexity while maintaining detection capability.
Solution Approach 2:
The connection detection function is merged with the existing data transmission function by using the same physical pins and circuit pathways. The differential amplifier combines the monitoring of electrical characteristics with the existing data signal infrastructure, eliminating the need for separate detection hardware and reducing overall system complexity.
3Measurement precision
If DC biasing circuits are added to enable connection detection, then the connection status detection accuracy is improved, but the device complexity increases
Solution Approach 1:
A differential amplifier is introduced as an intermediary component that translates subtle voltage changes on the connector pins into detectable signals. This intermediary device enhances the precision of connection detection by amplifying the small electrical characteristic changes that occur during connection or disconnection events.
Solution Approach 2:
The DC biasing circuits and differential amplifier are designed to automatically detect connection status without requiring external control or additional complex processing. The circuit self-regulates by monitoring its own electrical characteristics and generating appropriate detection signals, thereby improving precision while minimizing the increase in overall system complexity.
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
Enables reliable automatic detection of connection or disconnection between electronic devices, providing a connection status signal that can trigger visual indications or system responses, such as LED illumination or display messages, ensuring accurate communication and device control.
Implementation Method 1
a first capacitor section capacitively coupling the first differential amplifier to the first differential signal path
Implementation Method 2
a first DC biasing circuit for imparting a first DC bias to the first differential signal path opposite the first capacitor section
Data Source
AI summary
According to one embodiment, an apparatus has first and second connectors configured for removably connecting to one another. The first connector circuit has a first differential amplifier, a first differential signal path, a first capacitor section capacitively coupling the first differential amplifier to the first differential signal path, and a first DC biasing circuit for imparting a first DC bias to the first differential signal path opposite the first capacitor section. The second connector circuit has a second differential amplifier, a second differential signal path, a second capacitor section capacitively coupling the second differential amplifier to the second differential signal path, and a second DC biasing circuit for imparting a second DC bias to the second differential signal path opposite the second capacitor section having a different magnitude than the first DC bias when the first and second connector are not connected. One or both of the first and second connector circuits is configured for detecting a change in the first or second DC bias and outputting a connection status signal in response to the detected change.