Addressable Wireless Sensors for Vehicle Service Interference
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional wireless vehicle service systems face interference issues due to limited frequency bands and the need to identify specific sensors among multiple devices communicating simultaneously, leading to errors in calculating alignment parameters.
Innovation Solution
Implementing a unique address for each device that includes embedded information about its type, location, and service system, allowing the host to discriminate and properly process signals from individual devices through a look-up table or identification algorithm.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If different frequency bands or hopping sequences are allocated for each sensor to avoid interference, then interference from other sensors is reduced, but the number of available channels becomes limited and cannot accommodate increasing number of sensors
Solution Approach 1:
The patent changes the identification parameter from frequency band to address code. Instead of allocating different frequency bands to different sensors, the system uses the same frequency band for all sensors but identifies them through unique address codes embedded in communication packets. This resolves the contradiction by maintaining signal reliability through address-based identification while eliminating the need for complex frequency band allocation.
2Productivity
If multiple alignment systems operate simultaneously in the same service center, then service efficiency is improved, but signal interference between systems occurs causing calculation errors
Solution Approach 1:
The patent segments the communication space by introducing unique system address codes that divide the shared frequency band into virtual channels. Each alignment system is assigned a distinct address code, allowing multiple systems to operate simultaneously without interference. The host identifies and processes signals from different systems by decoding their respective address codes, thereby maintaining both high productivity and calculation accuracy.
3Adaptability or versatility
If sensors are made swappable between different vehicle wheels, then device versatility is improved, but the host cannot correctly identify which wheel the sensor is associated with
Solution Approach 1:
The patent embeds multiple levels of identification information within the address code structure. The address code contains not only the sensor identifier but also nested information about the vehicle bay, wheel position, and system affiliation. This nested structure allows the sensor to be swapped between wheels while the host can still correctly identify the current wheel position through the embedded positional information in the address code.
Data Source
AI summary
A wireless vehicle service system using addressable devices to avoid interference from similar devices within communications distance. The system includes a host and a plurality of devices that communicate with the host wirelessly. Each of the devices has a unique address, and stores information describing the device, such as the type of the device, a system to which the device is associated, a location of the device, etc. During an enumeration process, each device sends signals including its address and the information describing that device to a host of the vehicle service system. The host stores relationships between the addresses and associated information. For signals sent by the devices and received by the host, the host decodes an embedded address from the signals, and obtains information related to the device sending the signals based on the decoded address and the stored information associated to the decoded address. The host then processes the received signals by referring to the information describing the device sending the signals.