Electrical Device Wiring Reduction via Signal Superposition
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Solution Overview
Problem
Existing three-wire type electrical devices require multiple wirings for power and signal transmission, leading to complex circuit configurations and longer signal recognition times due to the need for separate power and signal lines, as seen in IO-Link communication methods.
Innovation Solution
An electrical device configured with a pair of signal lines where the second terminal operates using a voltage between the first and second terminal as a power source, allowing for data signal transmission superimposed on operation signals, reducing the number of required wirings and simplifying circuit configurations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If separate power lines and signal lines are used (as in IO-Link communication), then power supply and signal transmission can be performed independently, but the number of wirings increases and circuit configuration becomes complex
Solution Approach 1:
The patent combines power supply function and signal transmission function into a single wiring system. The communication cable carries both power (via rectifier circuit converting communication signal to DC power) and data (via modulation/demodulation), eliminating the need for separate power lines and reducing overall wiring complexity while maintaining functional independence through signal processing techniques
2Adaptability or versatility
If detection signal conversion processing is performed in the sensor, then communication data can be transmitted, but the time for external device recognition increases and circuit configuration becomes complicated
Solution Approach 1:
The patent extracts the complex conversion processing function from the sensor side and relocates it to the external device side. The sensor simply outputs raw detection signals, while the external device performs the conversion to communication data format, thereby reducing sensor circuit complexity and accelerating signal recognition time by eliminating intermediate conversion steps
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 transmission and reception of signals related to operation elements using a minimal number of wirings, simplifying circuit configurations and reducing signal recognition times, while allowing for data transmission regardless of the operation element's state, thus improving communication efficiency.
Implementation Method 1
a transmission circuit configured to operate using a voltage between the first terminal and the second terminal as a power source
Data Source
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AI summary
An electrical device configured to transmit or receive a signal related to an operation element and transmit a data signal using a small number of wirings is realized. An electrical device (6) includes a first terminal (11) and a second terminal (12) to which a pair of signal lines (21 and 22) is connected, an operation element (13) connected between the first terminal and the second terminal, and a transmission circuit (15) configured to operate using a voltage between the first terminal and the second terminal as a power source. The second terminal transmits an output signal according to a state of the operation element to the outside, and the transmission circuit superimposes a data signal on the output signal and transmits the data signal from the second terminal to the outside.