Industrial computers are built for environments that challenge the durability of consumer-grade systems. In sectors like manufacturing, transportation, defense, and mining, computers face constant exposure to shock, vibration, and other physical stressors. Designing these systems to remain reliable under such conditions requires engineering excellence and innovative technologies. This blog explores the key design principles and features that make industrial computers resilient against shock and vibration.
Understanding Shock and Vibration in Industrial Environments
Shock refers to sudden, high-magnitude impacts, such as a heavy object hitting a system or abrupt stops during transportation. Vibration, on the other hand, is the repetitive motion or oscillation caused by machinery, vehicles, or environmental factors. Both can lead to hardware failure, data corruption, or degraded performance if not properly mitigated.
Industrial computers are often deployed in scenarios where these stressors are unavoidable. For example:
- Mining equipment operates in environments with constant vibration from heavy drilling.
- Transportation systems endure shocks from uneven terrain and constant motion.
- Manufacturing floors expose devices to both localized vibrations from machinery and sudden impacts during operations.
Key Design Features for Shock and Vibration Resistance
To maintain reliability, industrial computers incorporate the following design features:
Ruggedized Chassis
- The outer enclosure of industrial computers is typically built from durable materials like aluminum or stainless steel. These materials not only provide physical protection but also help dissipate heat efficiently.
- Reinforced corners and frames are used to absorb shock and prevent deformation.
- Traditional computers use fans for cooling, but moving parts are prone to failure under vibration. Industrial computers rely on fanless cooling systems that use heat sinks and thermal conduction paths to dissipate heat.
- Fanless designs eliminate the risk of mechanical breakdowns, ensuring better longevity.
Shock-Absorbing Mounts and Anti-Vibration Dampeners
- Internal components like SSDs, motherboards, and power supplies are mounted on shock-absorbing materials or vibration isolation pads.
- Rubber grommets, or silicone-based dampeners reduce the transmission of vibrations to sensitive electronics.
- Various mounting technologies including DIN-Rail Mount for control cabinet environments, Vesa Mount, Panel Mount and Wall Mount. These mounting technologies not only enhance the durability and functionality, also help withstand the high shock & vibration in industrial settings.
Solid-State Drives (SSDs)
- Unlike traditional spinning hard drives, SSDs have no moving parts, making them significantly more resistant to shock and vibration.
- Industrial-grade SSDs also include advanced wear-leveling and error correction algorithms for additional durability.
Wide Temperature Range Support
- Shock and vibration often occur alongside extreme temperatures, so industrial computers are designed with components rated for wide temperature ranges (e.g., −40°C to 85°C).
- These components are selected for their ability to maintain performance under thermal stress.
Lockable I/Os
- Industrial computers often feature lockable input/output (I/O) ports to ensure secure connections. This design prevents cables from loosening or disconnecting due to vibrations or sudden shocks, provides secure and reliable connections in environments with constant motion or physical stress.
- For example, M12 connectors are designed with threaded locking mechanisms that prevent accidental disconnections, making them ideal for transportation and industrial automation systems. Additionally, Premio's new USB3 locking technology, featured in the EDGEBoost I/O expansion slot, ensures stable high-speed data transmission even in the harshest conditions, offering an advanced solution for rugged industrial applications.
Conformal Coating
- A protective layer of conformal coating is applied to PCBs (Printed Circuit Boards) to shield them from environmental factors like moisture, dust, and corrosion.
- This coating also provides an additional layer of protection against the physical wear caused by vibration.
MIL-STD Standards
- Many industrial computers undergo rigorous testing to meet military standards like MIL-STD-810G, which evaluates systems for shock and vibration resistance.
- These certifications validate the computer’s ability to operate reliably in extreme conditions.
EN 50155 Certifications
EN 50155 is a European standard that governs electronic devices used in rolling stock applications, making it particularly relevant for railway systems. However, its guidelines also provide a valuable framework for designing shock- and vibration-resistant computer systems across various industries.
Industrial computers used in rolling stock must meet stringent requirements, including:
- Vibration (operational): 5 to 150 Hz, 10 min/axis [Acceleration: 1.0 m/s² RMS (longitudinal, transverse, and vertical)]
- Vibration (non-operational): 5 to 150 Hz, 5 h/axis [Acceleration: 7.9 m/s² RMS (longitudinal, transverse, and vertical)]
- Shock: Half sine wave, 50 m/s² for 30 ms (longitudinal, transverse, and vertical)
These specifications help ensure that computers operate reliably under the constant vibration and shock found in railway environments and other demanding applications.
Testing Methods and Standards
Testing industrial computers for shock and vibration resistance ensures they can withstand harsh environments. The following are common testing methods and standards used:
MIL-STD-810G/H Testing
This U.S. military standard involves a series of environmental tests, including vibration and shock resistance. Key tests include:
- Shock Testing: Simulates sudden impacts using half-sine waveforms to evaluate system performance under abrupt accelerations.
- Vibration Testing: Tests random vibration patterns across multiple axes to replicate real-world conditions.
IEC 60068 Standard
This international standard outlines test procedures for vibration, shock, and other environmental factors.
- Part 2-6 (Vibration): Specifies sine wave vibration testing.
- Part 2-27 (Shock): Covers testing for mechanical shock using standardized pulse waveforms.
EN 61373 for Railway Applications
Focused on rolling stock, this standard evaluates equipment under simulated shock and vibration conditions specific to railway environments.
- Tests include longitudinal, lateral, and vertical vibrations and shocks to assess durability.
HALT (Highly Accelerated Life Testing)
HALT subjects computers to extreme levels of vibration and shock to identify potential failure points during the design phase. This helps manufacturers enhance durability.
Premio’s industrial computers are all tested with IEC 60068 Standard for shock & vibration and designed to comply with the MIL-STD-810G Method, ensuring peace of mind when deploying.
Applications That Demand Shock and Vibration Resilience
Industrial computers designed for shock and vibration resistance are used in a variety of demanding applications, including:
- Transportation: Railway systems, autonomous vehicles, and logistics fleets.
- Manufacturing: Robotics, machine vision systems, and production-line monitoring.
- Energy: Oil and gas exploration, wind turbines, and solar power monitoring.
- Defense: Military vehicles, drones, and rugged field equipment.
- Mining: Excavation machinery, drilling rigs, and underground monitoring systems.
Conclusion
Shock and vibration are inevitable in industrial environments, but the right design features can ensure that computers continue to perform reliably. From rugged chassis and fanless designs to SSDs and MIL-STD certifications, industrial computers are purpose-built to withstand the harshest conditions. By investing in these resilient systems, businesses can reduce downtime, prevent data loss, and maintain operational efficiency even in the toughest settings.
At Premio, we specialize in rugged industrial computers that deliver unmatched durability and performance. Learn more about our solutions and how they can be tailored to your specific application needs by visiting our website at https://premioinc.com/.