The SafeGuard security suite for computers addresses a whole host of mobile applications challenges, overcoming problems that are simply beyond the range of commercial IT hardware. In particular, SafeGuard is tailored for the special, ever-present environmental challenges that are found on railways. The EN 50155 industrial standard was established by international bodies to clearly identify devices suitable for railway use, addressing a range of issues that include power surges and supply interruptions, vibration, heat, and more. As one of the world’s leading manufacturers of IA/IT convergence devices, Moxa has taken these international developments as its compass, and SafeGuard represents our response: a suite of data protections and tidy automations specifically tailored for rail applications, but which offer a powerful solution for any mobile environment, no matter how harsh.
Take onboard network video recorders as an example: an NVR is a software package that typically runs on a dedicated, embedded device. These computing platforms receive video streams and save them in retrievable formats; thus, they require a large storage capacity. Yet mechanical storage devices are famously susceptible to vibration and temperature extremes, and while solid-state drives (SSDs) offer much more rugged endurance with regard to vibration, high capacity SSDs are far more expensive and remain susceptible to temperature extremes. SafeGuard™ answers all of these technological challenges, and then some.
The Challenges of Train and Trackside
- Centralized power controls with local, automated redundancy
- Active and passive temperature tolerance
- Passive damping and active automation protections against vibration
- Active and passive adjustments for inconsistencies in the power supply
Centralized Power Controls and Failsafes
Extreme Temperature Tolerance
However, when active controls are appropriately durable and reliable, they may still be used. To address more extreme temperatures, a temperature sensor is installed, with monitoring software that will cut power to the hard disk when necessary; the computer then logs new data to a solid-state, non-volatile buffer until the temperature returns to within the operable threshold.
Finally, for climates where temperatures can drop to well below zero, SafeGuard provides a fully automated onboard heater, to warm the device to an operative temperature.
Vibration and Shock SafeGuards
Power Supply Protections
However, by using serial or digital I/O interfaces to pair up a Moxa computer with an unlimited power supply (UPS), further benefits are gained. A UPS may be set up to provide surge protection, power redundancy, and local power monitoring and control, all in one. When power is lost, the UPS can maintain normal operations while initializing a safe shutdown. In this way, computers which have been cut off from their regular power supply will still power down using the standard system shutdown process, guaranteeing your data and storage drives remain secure and properly synchronized.