Brake Pad Sensor Module Layout for Heat and Noise Isolation
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Solution Overview
Problem
Existing smart braking systems face inefficiencies due to environmental electromagnetic noise and signal interference, particularly in vehicles, which can lead to reduced maintenance efficiency and safety concerns related to brake pad wear and performance monitoring.
Innovation Solution
The solution involves positioning an electronic module with a microprocessor and radio transmitter near the brake pad to minimize electromagnetic noise, using a thermal decoupling element to maintain the module at a lower temperature, and incorporating sensors for real-time data collection and transmission, including piezoceramic and thermistor sensors for temperature and force measurements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the electronic module is positioned close to the brake pad for real-time data collection, then the measurement precision and response time are improved, but the module is exposed to high temperatures and electromagnetic noise that degrade its reliability
Solution Approach 1:
The system separates the electronic module from the extreme thermal environment by introducing a thermal barrier layer between the brake pad and the module. This segmentation allows the sensor to remain close to the brake pad for accurate measurement while the electronic module operates in a thermally protected zone, resolving the contradiction between measurement precision and operational reliability.
Solution Approach 2:
A thermal barrier layer acts as an intermediary element between the hot brake pad and the electronic module. This mediator allows thermal energy to be managed appropriately - enabling the module to function reliably while still permitting the sensors to detect brake pad conditions accurately, thus resolving the contradiction between reliability and measurement precision.
2Reliability
If thermal insulation is provided to protect the electronic module from heat, then the module temperature is reduced improving reliability, but the sensors may be affected by thermal gradients reducing measurement accuracy
Solution Approach 1:
The thermal barrier layer is designed with local quality variations - it provides thermal insulation to protect the electronic module while having controlled thermal conductivity properties that allow temperature sensors to accurately measure brake pad temperature. The barrier's thermal properties are optimized locally to enable both protection and accurate measurement, resolving the contradiction between reliability and measurement precision.
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 system efficiency, reduces maintenance downtime, and provides real-time data for improved safety and predictive maintenance, enabling effective monitoring of brake pad wear and performance.
Implementation Method 1
a thermal decoupling element (3) having a proximal end (25) connected to the braking pad (1) and a distal end (26) connected to the electronic module (4)
Implementation Method 2
incorporating sensors for real-time data collection and transmission, including piezoceramic and thermistor sensors for temperature and force measurements
Implementation Method 3
incorporating sensors for real-time data collection and transmission, including piezoceramic and thermistor sensors for temperature and force measurements
Implementation Method 4
an electronic module (4) having active components which may require energy in order to function, and a thermal decoupling element (3) physically connected the electronic module (4) to the braking pad (1)
Data Source
Figure 1~1a
Figure 2a~2b
Figure 3a~3b
AI summary
A vehicle braking system comprising: a brake pad (1) comprising: a support plate (21); a friction pad (20); and a force sensor (10,11, 13); an electrical circuit comprising electrical terminals (24) arranged in a zone on the brake pad (1), the electrical terminals (24) configured to receive signals from the force sensor (10,11, 13); an electronic processor unit (4) comprising: an analog conditioning stage configured to condition the signals from the force sensor; an analog to digital converter configured to convert the conditioned signals to digital signals, a data processor configured to process data from the digital signals; and a transmitter configured to transmit the data; and a thermal decoupler (3) that physically connects the electronic processor unit (4) to the brake pad (1) and electrically connects the electronic processor unit (4) to the electrical terminals (24), whereby the electronic processor unit (4) is spaced apart from the brake pad (1).