Arete’s OEM model (AR-i9000+) Rail-in-motion Indicator is a state of the art, scalable, intelligent, accurate and high-speed real-time system that interfaces to weigh rails to extract axle weight, axle speed & axle spacing information of individual axles of the cargo trains used by Indian Railways
Indicator is optimized to interface to load cells that are bonded on rails (commonly referred to as weigh rails).
Indicator meets all the requirements as specified in the RDSO standard - WD-29-MISC-14
Indicator works with additional hardware designed by Arete Automation Systems to automatically eliminate locomotives. Our indicator is also capable of eliminating locomotives used in long haul applications and suppress wagon/axle weights in the event of rollback
The indicator is designed to seamlessly plug-in to the next higher level application software
Indicator features a novel calibration methodology which ensures system accuracy and meets RDSO requirements of +/- 0.25% for the entire rake
Additional customization to cater to a specific need is possible due to its scalable and reconfigurable hardware and software architecture.
500+ installations across India
Designed in India
Key Features (RIM)
Integrated 400MHz Freescale Industrial -real-time controller with Xilinx Spartan-6 FPGA, 128 MB DRAM for high-speed and inline signal processing.
Wind River VxWorks real-time operating system (RTOS) for extreme reliability and determinism.
Galvanic isolation of measurement front end for better accuracy & improved reliability. Inbuilt secondary protection against lightning.
Supports 4/6 Wire load cell connections. 5V DC excitation for 4 load cells (350W−700W).
Very Low Noise, high speed 24 bit, SD ADC with integrated PGA.
On board EMI filters for reduced interference from pick-up noise.
16X2 LCD display for status & weight
Interfaces :
10/100BASE-TX Ethernet port with built-in FTP and HTTP servers for system update & configuration.
RS-232 DTE Serial Port with arbitrary baud rate support for peripheral devices.
Password protected multi-dimensional calibration for variation due to load cell and vehicle dynamics.
Calibration lock facility to block or modify device calibration after approval/stamping process from Railway inspectors
Interfaces to Automatic loco elimination software to output only the wagon and brake-van weights as required by RDSO
RTC and on-board SD card for data logging
Field Firmware upgrade features for easily updates
Auto-Diagnostics of Load cells & other critical system components
Windows Application (user interface) s/w for configuration, calibration, debug & data analysis.
Key Specifications
Measurement Accuracy
Static
Weight: ±0.5%
Repeatability: ±0.1%
Dynamic
Speed (KMPH)
Weight Accuracy
Axle Speed
Axle Spacing
Repeatability
RIM
<= 15
+/- 0.25%
+/- 5%
+/- 5%
+/- 2%
Weigh rails
Configuration: 4/6 wire
Excitation: 5V DC for 4 loads cells of 350 ohm to 700 ohm
Sensitivity: 1/2/3 mV/V.
Galvanic Isolation: 1000V RMS for 1min.
Ethernet
Communication rate: 10 Mb/s, 100 Mb/s auto-negotiated
