Connection Terminal Reactance Detection for Device Identification
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Solution Overview
Problem
Conventional connecting structures fail to accurately detect whether a slave device is connected to a master device, leading to potential noise, sparks, and erroneous connections due to foreign materials with similar resistance values.
Innovation Solution
A system comprising a first device with a connection terminal and a reactance element, and a second device with a corresponding connection terminal, resistance element, frequency generator, comparator, and controller. The second device applies a signal with varying frequency to the first device, compares signals across a resistance element, and determines connection status based on phase or amplitude changes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the master device always supplies power and signals without recognizing connection status, then the system operates continuously, but noise or sparks may be generated at the connection terminal when foreign material contacts the terminal
Solution Approach 1:
The master device performs connection detection before supplying power and signals to the slave device. By detecting the presence and type of connected device in advance through reactance measurement, the system prevents noise and sparks by ensuring proper connection status before activation.
Solution Approach 2:
The system continuously monitors the reactance value of the connected device and compares it against stored reference values to identify the device type. This feedback mechanism allows the master device to adjust power supply and signal transmission based on the detected slave device, preventing harmful effects from improper connections.
2Measurement precision
If the connection terminal measures resistance to detect slave device connection, then connection status can be detected, but erroneous detection occurs when foreign material with similar resistance value contacts the terminal
Solution Approach 1:
The system changes the measurement parameter from resistance to reactance. By measuring the reactance value which is specific to the slave device's capacitive or inductive characteristics, the system achieves more accurate device identification that cannot be replicated by foreign materials, thereby improving both measurement precision and reliability.
Solution Approach 2:
The patent replaces the conventional resistance-based detection method with a reactance-based electrical measurement method. This substitution allows for more distinctive device identification since reactance values are determined by the slave device's internal circuitry rather than just contact resistance, eliminating erroneous detections.
3Ease of operation
If the master device supplies power without identifying the slave device, then power can be supplied to any connected device, but the device cannot be identified and unauthorized connections cannot be prevented
Solution Approach 1:
The master device measures the reactance value of the connected slave device and compares it against pre-stored reference values to identify the device type. Based on this identification feedback, the system determines whether to allow power supply and signal transmission, thereby preventing unauthorized connections while maintaining ease of operation for authorized devices.
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 accurately detects the connection of a slave device to a master device, preventing noise and sparks, and ensuring safe and correct power and signal supply, while also identifying the attached device and allowing only authorized connections.
Implementation Method 1
a first frequency generator configured to apply a signal having a frequency varying a predetermined range to the first device through the second connection terminal
Implementation Method 2
a first comparator having both input terminals connected to both ends of the first resistance element and configured to compare the signals of both ends of the first resistance element to generate output signal
Implementation Method 3
a first reactance element connected to the first connection terminal
Implementation Method 4
a first reactance element connected to the first connection terminal
Data Source
Figure 2
Figure 3
Figure 4(a)~4(b)
AI summary
The present invention relates to a system, device and method, for detecting a connection of a connecting structure, which can automatically detect a first device connecting to a second device as well as identify the first device. Disclosed is a system for detecting a connection between two devices includes a first device and a second device. The first device includes a first connection terminal having a 1-1 contact point and a 1-2 contact point; and a first reactance element connected to the first connection terminal. The second device includes a second connection terminal having a 2-1 contact point and a 2-2 contact point which correspond to the 1-1 contact point and the 1-2 contact point; a first resistance element, and a first frequency generator for allowing a signal, which changes in frequency within a predetermined range, to pass through the first resistance element and be applied to the first device via the second connection terminal. The second device further includes a first comparator having both input terminals connected to both ends of the first resistance element, and comparing and outputting a signal of both ends of the first resistance element, and a first control unit for determining whether or not the first connection terminal of the first device is connected to the second connection terminal by means of the output signal of the first comparator.