JAD Systems
  • Home
  • About
  • Products
    • Brakes & Clutches >
      • Compressed air-cooled hysteresis brakes
      • Hysteresis clutches
      • Large bore brakes
      • Matched hysteresis brakes
      • Permanent magnet
      • Pure hysteresis brakes
    • Dynamometers >
      • Magtrol hysteresis dynamometers
      • Magtrol eddy current dynamometers
      • Magtrol powder dynamometers
      • Schenk eddy current dynamometers
      • Schenk water brake dynamometers
      • Custom dyno test beds
    • JAD Electronic products >
      • JAD 3 phase CT VT card
      • JAD digital filter board
      • JAD FDV board
      • JAD IYEV throttle controller
      • JAD LCA
    • JAD Mechanical products >
      • JAD Dual Reticulating Boom Arm
      • JAD Instrumentation Enclosure
    • JAD Software & systems >
      • JAD Mobiterm LEN7 software
      • JAD PowerMon
      • JAD T-Can Engine Protection System
      • JAD X-Var MLT16
      • JAD X-Tract 4
      • JAD X-Tract Delta 48x
      • JAD X-tract Terminal
      • JAD X-Zec 5-W
      • JAD X-Zec 5-WA
    • Measurement solutions >
      • Digital displays
      • Linear potentiometers
      • Linear resistive encoders
      • Magnetic linear encoders
      • Magnetic rotary encoders
      • Optical linear encoders
      • Optical rotary encoders
      • Process displays
      • Wire encoders
    • Pressure transducers >
      • BCT110 Piezoresistive Pressure Sensor
      • BT214 G1/2 Pressure Transmitter
      • BT214 G1 Pressure Transmitter
      • PTC Small Pressure Transmitters
      • PTL Submersible Level Transmitters
    • Torque transducers >
      • In line - TM series
      • In line - TMB series
      • In line - TMHS series
      • Torque Flange sensor - TF Series
      • Reaction torque sensors
      • Cardan shafts for TF sensors
      • Couplings for TF sensors
    • Rotary transmitters
    • Strain gauges
    • Special offers
  • Services
    • Calibration services
    • Custom dyno test beds
    • Engine dyno testing facilities
    • Software-Electronics research and design
  • Projects
    • Crowning pressure data logging
    • Data center monitoring
    • Electrical motor test bay
    • Electrical power and machine conditioning system
    • Hyperbaric Chamber
    • Impact analysis of falling elevator
    • Lawn mower test bed
    • Pump destruction testing
    • Pump efficiency test rig
    • Synchronised hydraulic press
  • Clients
  • Contact

Impact analysis of falling elevator

Project challenge: Analyse vibration of absorption tubes used to stop falling objects

?One of the universities in Johannesburg (South Africa) needed detailed vibration analysis of absorption tubes used to stop falling object such as elevators in a runaway situation.
​

The measurement had to take place on the falling object, in this case a 6m scale model of an elevator, and the velocity of the falling object needed to be determined as it made impact with the absorption tubes. 
Picture
WHAT IS THE VELOCITY OF A FALLING ELEVATOR? 

JAD solution

It was decided that a high speed data logger would be used to measure the deceleration curve and transients. JAD Systems also decided not to put the measurement hardware onto the falling object but rather to use a extension pulley system to feed the cable loom down the shaft to the test platform.

JAD created a custom optical fibre-based precision speed trap that measured the velocity of the falling object over the last 100mm. This was done by gating a high frequency source in a counter input on  a micro. The speed trap also had a digital output to trigger the National Instrument SCXI IEPE measurement device to start logging to file.

Data was logged to National Instrument signal express and reports were produced in MSExcel. The solution was found to be highly repeatable and accurate.
Picture

More projects
HOME  |  ABOUT  |  PRODUCTS  | SERVICES  |  PROJECTS  |  CLIENTS  |  CONTACT
i n n o v a t i v e   m e a s u r e m e n t   i n t e g r a t i o n

Picture
Picture
​Copyright JAD Systems 2015
  • Home
  • About
  • Products
    • Brakes & Clutches >
      • Compressed air-cooled hysteresis brakes
      • Hysteresis clutches
      • Large bore brakes
      • Matched hysteresis brakes
      • Permanent magnet
      • Pure hysteresis brakes
    • Dynamometers >
      • Magtrol hysteresis dynamometers
      • Magtrol eddy current dynamometers
      • Magtrol powder dynamometers
      • Schenk eddy current dynamometers
      • Schenk water brake dynamometers
      • Custom dyno test beds
    • JAD Electronic products >
      • JAD 3 phase CT VT card
      • JAD digital filter board
      • JAD FDV board
      • JAD IYEV throttle controller
      • JAD LCA
    • JAD Mechanical products >
      • JAD Dual Reticulating Boom Arm
      • JAD Instrumentation Enclosure
    • JAD Software & systems >
      • JAD Mobiterm LEN7 software
      • JAD PowerMon
      • JAD T-Can Engine Protection System
      • JAD X-Var MLT16
      • JAD X-Tract 4
      • JAD X-Tract Delta 48x
      • JAD X-tract Terminal
      • JAD X-Zec 5-W
      • JAD X-Zec 5-WA
    • Measurement solutions >
      • Digital displays
      • Linear potentiometers
      • Linear resistive encoders
      • Magnetic linear encoders
      • Magnetic rotary encoders
      • Optical linear encoders
      • Optical rotary encoders
      • Process displays
      • Wire encoders
    • Pressure transducers >
      • BCT110 Piezoresistive Pressure Sensor
      • BT214 G1/2 Pressure Transmitter
      • BT214 G1 Pressure Transmitter
      • PTC Small Pressure Transmitters
      • PTL Submersible Level Transmitters
    • Torque transducers >
      • In line - TM series
      • In line - TMB series
      • In line - TMHS series
      • Torque Flange sensor - TF Series
      • Reaction torque sensors
      • Cardan shafts for TF sensors
      • Couplings for TF sensors
    • Rotary transmitters
    • Strain gauges
    • Special offers
  • Services
    • Calibration services
    • Custom dyno test beds
    • Engine dyno testing facilities
    • Software-Electronics research and design
  • Projects
    • Crowning pressure data logging
    • Data center monitoring
    • Electrical motor test bay
    • Electrical power and machine conditioning system
    • Hyperbaric Chamber
    • Impact analysis of falling elevator
    • Lawn mower test bed
    • Pump destruction testing
    • Pump efficiency test rig
    • Synchronised hydraulic press
  • Clients
  • Contact