Variable Reluctance and General-Purpose Pulse Counter

 

Variable Reluctance and General-Purpose Pulse Counter (VR1)

Module VR1 is NAI’s latest generation Chip Detector and Fuzz Burn Module. This module is used on our rugged COTS Multifunction Embedded I/O Boards, Single Board Computers (SBCs), and Configurable Systems offered in OpenVPX, cPCI, VME, and PCI/PCIe configurations, and also for testing and non-critical embedded applications.

Our Smart Function Modules provide uniquely flexible, mix & match customization options for use with our COTS hardware. Learn More

Module VR1

The VR1 provides eight isolated, wide voltage input range Variable Reluctance (VR) signal or general-purpose Pulse Counter measurement interfaces. Channels can be programmed to operate individually or combined in pairs.

The VR1 provides several measurements of the signal characteristics including:

Monopole type/mode:

  • Signal Amplitude measured as the absolute value of the maximum positive or negative peak
  • Signal Frequency
  • Period of the signal
  • RPM based on number of teeth on wheel sensor

Dipole type/mode:

  • Phase measurement between interposed signal trains (either single or paired channel mode)

The VR1 sensor interface is ideal for speed sensing for aircraft, marine or automotive crankshafts, camshafts, brake or gear rotors, transmission shafts, etc. and is uniquely designed to process signals as a general-purpose counter, that can operate and process a wide variety of AC and DC input signals > ±100 V or as low as ±25 mV. The VR1 provides the user with pulse counts and frequency to 100 kHz.

Features Summary

  • Variable Reluctance Interface
    • 8 isolated, differential input channels
      • Independent, or paired mode
    • Large voltage range input
      • ±25 mV to ±100 V
    • Large pulse train rate detection
      • 8 ns resolution (to be characterized)
  • General Purpose Counter
    • 32-bit
    • Pulse count
      • Single channel: Increment, decrement
      • Paired channel: UP/DOWN A, UP/DOWN B and UP/DOWN A-B (Quadrature)
    • Frequency 
      • 100 kHz (maximum, continuous) (to be characterized)
  • Standard NAI COSA Smart Functions
    • Up to 8 VR / Counter channels
  • Independent Channel Configuration
    • Programmable parameters for interfacing with different sensor types
    • Independent or paired mode 
  • Isolated Channels
    • Mitigates ‘noise’ false trigger count
  • Built-In-Test (BIT)

 

Click below for manuals and specifications:


ModuleDescriptionDatasheetManual
VR18 Channels, Differential Input N/AContact Factory at 1 (631) 567-1100

Function module(s) featured in products below:


ModelBoard TypeBoard ArchitectureFunction Module SlotsSizeEthernetMaster / SlaveOn Board ReferenceOther
75G53U cPCIARM / Xilinx® Zynq3 2 x GbBoth   
64G5VMEARM / Xilinx® Zynq6 2 x GbBoth YUser application ARM processor capability
68G53U OpenVPXDual Core ARM® Cortex® A9 @ 800 MHz3 2 x GbBoth  Slot profile: SLT3-PER-1U-14.3.3 / Module profile: MOD3-PER-1U-16.3.3-2
68G5P3U OpenVPXDual Core ARM® Cortex® A9 @ 800 MHz3 2 x GbE or Base-KXEndpoint  SLT3-PER-1U-14.3.3 / Backplane accessible: 1 x1 PCIe lane to Module-Slot-3 & 1 SATA Interface to Module-Slot-2
79G5PCIe 31/2   N/A 
ModelBoard TypeProcessorFunction Module SlotsMaximum MemoryMaximum StorageVideo OptionsEthernetAvailable O/S
75ARM13U cPCI SBCXilinx® Zynq 7015 with Dual Core ARM® Cortex® A9 @ 800 MHz3512 MB DDR3L SDRAM32 GB SATAII NAND FlashN/A2 x GbWind River® VxWorks®, Xilinx® PetaLinux OS and DDC-I Deos™ support
68ARM13U OpenVPX SBCXlilinx® Zynq 7015 & 7016 w/Dual Core ARM® Cortex®-A9 @800MHz3512 MB DDR3 SDRAM32 GB SATAII NAND FlashN/A2 x GbWind River®, VxWorks® and Xilinx® PetaLinux OS Support
75PPC13U cPCI SBCNXP® QorIQ® P2041 Quad-Core e500mc Processor @ 1.2 GHz28 GB DDR3L SDRAM32 GB SATAII NAND FlashN/A2 x GbWind River® VxWorks®
75INT23U cPCI SBCDual Core Intel® i7 3517UE @ 1.5 GHz28 GB DDR3L SDRAM32 GB SATAII NAND FlashVGA, HDMI, LVDS, or DVI2 x GbCentOS, Red Hat®, Linux®, and Windows® Embedded Standard 7
64ARM16U VME SBCXilinx® Zynq Dual Core ARM® Cortex® A9 @ 800 MHz6 + AC Ref512 MB DDR3L SDRAM32 GB SATAII NAND FlashN/A2 x GbWind River® VxWorks® and Xilinx® PetaLinux OS support
68PPC23U OpenVPX SBCNXP® QorIQ® T2080 Quad Core @1.5 GHz2 8 GB DDR3 SDRAM32 GB SATAII NAND FlashN/A2 x GbWind River® VxWorks®, DDC-I Deos OS Support
ModelPhotoBoard TypeDimensions w/Connectors (w x h x d)Volume w/Connectors (in3)Weight / lbs (fully populated)Est. Typ. Power Dissipation (W)# of Board SlotsFunction Module SlotsMax I/O PinsEthernet
SIU363U OpenVPX7.13"x 4.78" x 9.39"320<6.85 lbs. Chassis plus ~ 1.25 lbs. for PSU and each addl. board50 to 150 W6189062 x Gb