Pressure Sensor Terminal Arrangement for Compact Electric Pumps
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Solution Overview
Problem
Existing pressure sensor configurations for electric pumps increase the size of the pump when integrated, which is undesirable for compact designs.
Innovation Solution
A pressure sensor device with a unique terminal and capacitor arrangement that protrudes in alternating directions, allowing for a reduced size configuration by disposing the sensor along the circumferential direction within the pump, and using lead lines that exit from the same side to simplify assembly and reduce component count.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a pressure sensor is disposed inside the electric pump, then the pressure measurement function is achieved, but the size of the electric pump is increased
Solution Approach 1:
The patent combines multiple components (pressure sensor, terminals, capacitors, and lead lines) into a single integrated pressure sensor device that is disposed inside the electric pump. This merging approach allows the pressure measurement function to be achieved while minimizing the increase in overall pump size by sharing space efficiently among components.
Solution Approach 2:
The patent arranges terminals and capacitors in specific spatial configurations (first terminal and second terminal on one side, third terminal and fourth terminal on the other side) to optimize the layout within the limited space of the pump. This dimensional arrangement allows components to be packed more efficiently, reducing the volume occupied by the pressure sensor device.
2Adaptability or versatility
If multiple terminals and capacitors are arranged on the pressure sensor, then electrical connection functionality is improved, but the device complexity increases
Solution Approach 1:
The patent employs an asymmetric arrangement where the first terminal and second terminal are disposed on one side of the pressure sensor while the third terminal and fourth terminal are disposed on the other side. This asymmetric layout simplifies the wiring configuration and reduces complexity compared to a symmetric arrangement by allowing lead lines to exit from a single side.
Solution Approach 2:
The pressure sensor device is designed to provide multiple electrical connections (four terminals) and capacitor functions within a single integrated unit. This multi-functional design allows the device to handle various electrical connection requirements while maintaining a compact form factor, effectively reducing overall system complexity.
3Adaptability or versatility
If lead lines extend from multiple sides of the sensor case, then electrical connectivity is achieved, but assembly difficulty increases
Solution Approach 1:
The patent extracts the lead line exits to a single side of the sensor case, separating the internal complex terminal arrangement from the external connection interface. This allows the internal multi-terminal configuration to maintain full electrical connectivity while simplifying the external assembly process by having all lead lines emerge from one location.
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 effectively reduces the vertical and radial size of the pressure sensor device, minimizing the increase in electric pump size while facilitating easier assembly and reducing costs.
Implementation Method 1
a first capacitor disposed on the one side of the pressure sensor in the horizontal direction and connecting the first terminal and the second terminal
Implementation Method 2
a second capacitor disposed on the other side of the pressure sensor in the horizontal direction and connecting the third terminal and the fourth terminal
Data Source
AI summary
A pressure sensor device includes a pressure sensor, a sensor case, first and second terminals protruding from the pressure sensor in a first direction, a third terminal protruding from the pressure sensor in a second direction, a fourth terminal protruding from the pressure sensor in the second direction, a first capacitor on one side of the pressure sensor, a second capacitor on the other side of the pressure sensor, a first lead line extending out of the sensor case from the first terminal, a second lead line extending out of the sensor case from the second terminal, and a third lead line extending out of the sensor case from a side edge between the first terminal and the second terminal.