Signal Processing Device Directional Antenna Search
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Solution Overview
Problem
Existing signal processing devices face challenges in quickly detecting the presence of a target device, especially when it is buried or difficult to locate, leading to inefficient power transmission and delayed signal generation, which hinders timely operation checks and diagnostics.
Innovation Solution
A signal processing device equipped with a directional antenna that can change direction and transmit search signals to locate the target device, using a second signal generated from received radio waves to enhance response speed and power transmission efficiency, and a pseudo signal generation circuit to enable testing at desired times without relying on input signals.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If a directional antenna is used to concentrate transmitted electric power in a specific direction, then power transmission efficiency is improved, but the ability to locate the target device when its position is unknown deteriorates
Solution Approach 1:
The system performs a preliminary search phase before the main power transmission phase. During the search phase, the directional antenna scans multiple directions to locate the target device first. Once the target is found, the system then performs efficient power transmission in the identified direction. This preliminary action of locating the target before concentrating power resolves the contradiction between needing to scan all directions (for location) and concentrating power in one direction (for efficiency).
2Use of energy by moving object
If the system waits for the capacitor to accumulate sufficient electric power before transmitting signals, then power consumption is controlled, but the response speed deteriorates
Solution Approach 1:
The system transmits signals with lower power when the capacitor has not fully accumulated the predetermined amount of electric power. Instead of waiting for complete charging before any transmission, the system performs partial power transmission using the available power in the capacitor. This allows the system to respond faster while still managing overall power consumption, resolving the contradiction between power control and response speed.
3Reliability
If the directional antenna continuously scans all directions to locate the target device, then detection completeness is improved, but the time required for location increases
Solution Approach 1:
The system performs directional scanning in periodic intervals rather than continuously. It scans a plurality of directions periodically to detect the target device, and once detected, switches to efficient power transmission mode. This periodic scanning approach ensures the target is eventually found (maintaining detection completeness) while reducing the total time spent scanning compared to continuous scanning of all directions.
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 solution allows for efficient power transmission and rapid detection of the target device's direction, enabling timely operation checks and diagnostics, even when the device is hard to locate, and ensures the signal processing device can function as a sensor for detecting input signals or abnormalities.
Implementation Method 1
a capacitor; a first transmission unit configured to wirelessly transmit, in a case in which electric power of a predetermined amount or more is accumulated in the capacitor, a first signal through use of the electric power accumulated in the capacitor
Implementation Method 2
a reception unit configured to receive a radio wave transmitted from an external device; and a second transmission unit configured to wirelessly transmit, in response to reception of the radio wave, a second signal generated based on the received radio wave
Data Source
AI summary
Provided is a sensor device being a signal processing device, including: a capacitor; a sensor unit configured to wirelessly transmit, in a case in which electric power of a predetermined amount or more is accumulated in the capacitor, a first signal (SG1) through use of the electric power accumulated in the capacitor; a reception unit configured to receive a radio wave transmitted from a power transmission device being an external device; and a transmission antenna functioning as a second transmission unit, the transmission antenna being configured to wirelessly transmit, in response to reception of the radio wave, a response signal (SG3) being a second signal generated based on the received radio wave without using the electric power accumulated in the capacitor.