Disk Drive Emulator With Sensors For Test Slot Validation
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Solution Overview
Problem
Disk drive testing systems face challenges in accurately validating and maintaining the functionality of test slots due to sensitivity to vibration and temperature fluctuations, leading to unreliable test results and increased manufacturing costs.
Innovation Solution
A disk drive emulator with a housing, testing circuit, and interface connector, equipped with sensors for temperature, vibration, and humidity monitoring, which simulates a disk drive's power delivery and environmental conditions to diagnose test slot connectivity, power delivery, and connector reliability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a gold drive is used to validate test slot functionality, then test slot validation can be performed, but the process becomes cumbersome and expensive
Solution Approach 1:
The patent uses a disk drive emulator that copies the essential electrical and environmental characteristics of a real disk drive without requiring an actual validated gold drive. The emulator contains testing circuits that simulate drive behavior, eliminating the need to maintain and validate physical gold drives while still enabling comprehensive test slot validation
Solution Approach 2:
The emulator provides a cost-effective alternative to expensive gold drives. By using a standardized emulator device with integrated sensors and testing circuits, manufacturers can perform validation without investing in and maintaining multiple validated gold drives, reducing both equipment cost and maintenance expenses
2Measurement precision
If environmental conditions are closely regulated during testing, then test accuracy is improved, but the testing system becomes more sensitive to vibrations and temperature fluctuations
Solution Approach 1:
The emulator incorporates sensors that continuously monitor temperature, vibration, and humidity levels in the test environment. This feedback is used to detect environmental deviations and can trigger test interruptions or corrections, allowing the system to maintain accuracy by actively responding to environmental changes rather than passively suffering from them
Solution Approach 2:
The patent replaces mechanical coupling between drives that transmits vibrations with an electromechanical emulator system. The emulator uses electrical sensors and controlled power delivery to simulate drive behavior without the mechanical vibration propagation that occurs when multiple physical drives are mounted in close proximity
3Productivity
If multiple disk drives are tested simultaneously in batches, then manufacturing efficiency is improved, but vibration cross-talking between drives increases
Solution Approach 1:
The emulator copies the electrical and environmental signature of a disk drive without replicating its mechanical vibration generation. Multiple emulators can be tested simultaneously in the same test slot configuration without experiencing vibration cross-talk, maintaining batch testing productivity while eliminating the harmful mechanical interactions between multiple physical drives
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 emulator effectively validates test slot functionality by monitoring environmental conditions and connector reliability, reducing the need for a 'gold drive' and enhancing testing accuracy, thereby improving yield and reducing costs.
Implementation Method 1
A temperature sensor is disposed near each corner of the top and bottom broad surfaces
Implementation Method 2
The at least one sensor is selected from the group consisting of a temperature sensor, a vibration sensor, and a humidity sensor
Implementation Method 3
The disk drive emulator may include a humidity sensor in electrical communication with the testing circuit, which is configured to monitor a humidity level of the test slot
Implementation Method 4
The testing circuit is configured to test power delivery of the test slot to the disk drive emulator
Data Source
AI summary
A disk drive emulator for testing a test slot of a disk drive testing system includes an emulator housing, a testing circuit housed in the emulator housing, and an interface connector disposed on the emulator housing and in electrical communication with the testing circuit. The disk drive emulator includes at least one sensor in electrical communication with the testing circuit. The at least one sensor is selected from the group consisting of a temperature sensor, a vibration sensor, and a humidity sensor. The testing circuit is configured to test power delivery of the test slot to the disk drive emulator, monitor the at least one sensor, and monitor connector resistance between the test slot and the disk drive emulator.