Battery-Separated Sensor Module Layout for Reliable Wireless Links
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Solution Overview
Problem
Existing sensor modules face challenges in achieving space efficiency, ease of assembly, and reliable wireless signal transmission due to the presence of batteries hindering wireless communication.
Innovation Solution
The sensor module is designed with a configuration where the battery is positioned at a non-overlapping location relative to the wireless communication unit, housed in a module case with a tubular body and inner frame that separates the substrate and battery, allowing for efficient power and wireless communication.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Extent of automation
If a battery is included in the sensor module to power wireless communication, then the sensor module can transmit information wirelessly, but the battery hinders wireless signal transmission
Solution Approach 1:
The patent positions the battery in a different spatial dimension relative to the wireless communication unit. Specifically, the battery is arranged in the thickness direction (Z-axis) away from the substrate surface, while the wireless communication unit remains on the substrate surface. This dimensional separation allows both components to coexist without the battery interfering with wireless signal transmission, resolving the contradiction between having battery power and maintaining reliable wireless communication.
2Volume of moving object
If the battery is positioned close to the wireless communication unit to save space, then space efficiency is improved, but wireless signal transmission is hindered
Solution Approach 1:
The patent utilizes the thickness direction (Z-axis) of the module case to position the battery away from the substrate surface where the wireless communication unit is located. This vertical separation in the thickness direction maintains a compact overall module size while ensuring the battery does not interfere with wireless signal transmission, thus resolving the space efficiency versus signal reliability contradiction.
Solution Approach 2:
The module case is divided into distinct functional regions: a first region housing the wireless communication unit on the substrate surface, and a second region positioned away in the thickness direction housing the battery. This spatial segmentation separates the wireless communication function from the power supply function, allowing both to operate effectively within a compact module.
3Reliability
If the battery is arranged to not overlap the wireless communication unit, then wireless signal transmission is improved, but assembly complexity increases
Solution Approach 1:
The module case is segmented into a first region for the wireless communication unit and a second region for the battery, separated in the thickness direction. This clear spatial segmentation simplifies the assembly process by providing predefined mounting locations for each component, reducing assembly complexity while maintaining reliable wireless signal transmission.
Data Source
AI summary
This sensor module includes: a module case, a sensor unit mounted on a substrate surface of a substrate housed in the module case; a wireless communication unit mounted on the substrate surface, and a battery that is housed in the module case and supplies power to the sensor unit and the wireless communication unit. The battery is arranged at a position not overlapping the wireless communication unit in a view along a direction perpendicular to the substrate surface of the substrate.