In-Vehicle PC Buying Guide: Rugged Computers for Vehicles and Mobile Equipment

Key Requirements for In-Vehicle Computers

Wide Voltage Input

Vehicle electrical systems are noisy and variable. A 12V vehicle battery actually swings from 9V (cranking) to 16V (alternator charging). Heavy diesel vehicles use 24V systems that swing from 18V to 32V. In-vehicle PCs must accept these voltage ranges without damage. Avalue in-vehicle platforms typically accept 9–36V DC or 16–160V DC input.

Ignition Sensing and Power Management

In-vehicle PCs should start automatically when the ignition is switched on and perform a controlled shutdown when it is switched off — without data corruption. Ignition input sensing and configurable power-on/power-off delay timers are essential features for vehicle-mounted computers.

Vibration and Shock

Vehicle vibration — especially on construction sites, off-road terrain, or railway tracks — is far more severe than factory floor vibration. In-vehicle PCs must be tested to MIL-STD-810G Method 514.6 (vibration) and Method 516.6 (shock) or equivalent standards. Solid-state storage is mandatory.

Operating Temperature

Vehicle cabins can reach 80°C+ in direct sun before air conditioning is activated. In-vehicle PCs must operate through cold starts at −20°C to −40°C and survive cabin temperatures during summer parking. Wide temperature ratings of −20°C to 70°C are the minimum; −40°C to 85°C for extreme climates.

Typical In-Vehicle Applications

• Fleet management (GPS, telemetry, video)
• Railway passenger information systems
• Mining and construction equipment data logging
• Emergency vehicle dispatch computers
• Port and warehouse AGV controllers