Automotive Driveline
Torque, strain and temperature measurements from driveshafts require reliable data transmission in harsh environments, where space is limited and large suspension displacements may occur. Combinations of standard systems parts provide the solution for single and multi channel applications.
(Click on thumbnails to enlarge)
Quickly Installed System for Short Duration Tests (up to 24 hours)
Using a battery to power the transmitter eliminates the 20mm transmission air-gap limit of inductive head powered systems. A transmission air-gap range of 150mm or more avoids shaft movement problems and a steel strapping transmitter attachment kit (CAK) simplifies installation.
Transmitter Types: TX31D, TX34D, TX35D (1 channel), TX31D/2, TX24D/2, TX32D/2 (2 channel)
Shaft Attachment Kit: CAK
Signal Pickup Head: IH1
Demodulator: RE3D (1 to 4 channels)
Quickly Installed System for Long Term Tests
Provided that shaft movement is limited to 10-15mm in any direction, the transmitter may be inductively powered to give continuous operation.
Transmitter Types: TX31D, TX34D, TX35D (1 channel), TX31D/2, TX24D/2, TX32D/2 (2 channel)
Shaft Attachment Kit: CAK
Signal Pickup Head: IH2
Demodulator: RE3D (1 to 4 channels)
System For Use With Large Shaft Movement
If shaft movements of up to +/- 100mm occur, inductive power and signal pickup loop interface module type IL2 is used. Circular or oval loops are availible to suit various directions of shaft movement.
Transmitter Type TX31D, Inductive Pickup IP3, Shaft Clamping Kit CAK, Inductive Loop Interface IL2 with Custom Loop Antenna
Inductive Loop Interface IL2 with 190mm diameter glass fibre loop antenna
Split Ring Type Transmitter Attachment Hardware
For harsh operating conditions and high rotational speeds, Astech can provide split-ring style transmitter attachment hardware
22mm Driveshafts instrumented by Astech for torque measurement with inductive power.
30mm Driveshafts instrumented by Astech for torque measurement with inductive power.
33mm driveshaft instrumented by Astech with seperate low profile inductive coupling
Standard System Parts For Driveline Applications
Transmitters
- TX31D/1/ 1 channel transmitter 53 x 28 x 11mm
- TX31D/2 2 channel transmitter 53 x 28 x 11mm
- TX34D/1 1 channel transmitter with remote control 53 x 28 x 11mm
- TX34D/2 2 channel transmitter with remote control 53 x 28 x 11mm
- TX24D/2 2 channel transmitter with remote control 53 x 33 x 10mm
- TX35D/1 1 channel compact transmitter with remote control 35 x 20 x 5mm
- TX34D/1/TC4 4 channel thermocouple only transmitter 35 x 20 x 51mm
- TX79D/4 4 channel transmitter with remote control 60 x 49 x 9mm
Transmitters available with 10.7MHz carrier (signal bandwidth DC - 1KHz) or H.F. carrier (signal bandwidth DC - 30KHz). Multi channel transmitters have lower bandwidth.
Transmitters available for Strain Gauge or Thermo couple inputs or mixed (multi channel). Remote control means zero adjust, input sensitivity calibration signal etc is adjusted at the demodulator
Hardware to Attach Transmitters to the Shaft
- CAK Transmitter mounting kit for shaft diameters 30-150mm. Dual steel strapping plus transmitter antenna materials.
- TX.MTGS Split-ring hardware for transmitter mounting. Several standard designs for shaft diameter 20-120mm
Battery Unit and Transmitter Signal Pickup
- BU31 Battery unit 53 x 28 x15mm to power transmitter. Attached using CAK kit. 2x AA lithium cells
- IH1 Transmitter signal pickup head for battery powered transmitters
Inductive Power Supply Parts
- IH2 Combined inductive power and signal pickup head.
- IL2 Combined inductive power and signal pickup loop interface module + set of glass fibre loops 40 - 190mm diameter
- IP2 Combined inductive power and signal pickup module. Eliminates need for shaft mounted transmitter loop antenna.
- RE3D/4/10.7 1 to 4 channel demodulator for 10.7MHz transmitters
- RE3D/10/10.7 1 to 10 channel demodulator for 10.7MHz transmitters
- RE3D/4/HF 1 to 4 channel demodulator for high frequency transmitters
- RE3D/10/HF 1 to 10 channel demodulator for high frequency transmitters
