Wireless Sensor Layout With Metal Pedestal for Accurate Detection
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Solution Overview
Problem
Existing sensor devices for measuring physical quantities in objects like large pumps or motors face challenges in accurately transmitting these measurements due to the need for multi-layered structures with rigid-flexible substrates and interference from batteries and communication modules, which increase manufacturing costs and complexity.
Innovation Solution
A detection device with a simple internal structure that places sensors and a wireless communication circuit on a single substrate, using a metal pedestal to transmit physical quantities directly to the sensors while housing the battery below the substrate to avoid interference, eliminating the need for rigid-flexible substrates.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If multi-layered rigid-flexible substrates are used to separate sensors, communication modules, and batteries, then component layout is achieved, but manufacturing cost and structural complexity increase
Solution Approach 1:
The patent combines the wireless communication circuit and sensor onto a single substrate, eliminating the need for multi-layered rigid-flexible substrates. This merging of components simplifies the overall structure and reduces manufacturing costs while maintaining functional separation through spatial arrangement within the case.
Solution Approach 2:
The patent transitions from a multi-layered vertical stacking approach to a planar arrangement on a single substrate. By utilizing the available space within the case in a two-dimensional layout rather than requiring multiple stacked layers, the structure becomes simpler and easier to manufacture.
2Volume of stationary object
If battery is placed between sensor layers and communication module layers, then space utilization is improved, but measurement accuracy deteriorates due to interference
Solution Approach 1:
The patent extracts the battery from the space between the substrate and measurement target, placing it in a dedicated battery housing instead. This separation removes the source of interference from the measurement path, ensuring that the battery does not obstruct or interfere with the sensor's ability to accurately detect physical quantities from the measurement target.
Solution Approach 2:
The patent segments the internal space into distinct functional zones: the substrate with sensors and communication circuit, the battery housing for power supply, and the measurement target interface. This spatial segmentation ensures that each component occupies its own dedicated space without interfering with others, particularly protecting the measurement path from battery interference.
3Measurement precision
If sensors are placed near measurement target for accurate measurement, then measurement accuracy is improved, but device complexity increases due to multi-layered structure requirements
Solution Approach 1:
The patent merges the sensor and wireless communication circuit onto a single substrate that is directly positioned near the measurement target. This integration allows accurate measurement to be achieved without requiring complex multi-layered structures, as the sensor can maintain its optimal position while the overall device structure remains simple.
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 configuration enhances measurement accuracy, reduces manufacturing costs, and simplifies assembly by allowing sensors and communication modules to be placed on a single substrate without interference, improving transmission efficiency and reducing the workload.
Implementation Method 1
a metal pedestal part disposed in the space on a same side as the case member, the pedestal part has an end portion facing the sensor in the space
Data Source
AI summary
A detection device has: a case member; a cover member; a substrate, provided in a space surrounded by the case member and the cover member, the substrate having mounted thereon a wireless communication circuit and a sensor configured to measure a physical quantity; a battery housed in the space; and a metal pedestal part disposed in the space on a same side as the case member, the pedestal part has an end portion facing the sensor in the space, and the battery is housed in part of the space that is on a same side as the pedestal part with respect to the substrate.