About Advanced Telemetrics International
We are your Rotating, Wireless, Non-Contact, and Telemetry Measurement Specialists. Since its founding in 1989, Advanced Telemetrics International (ATi) has been in the business of solving unique rotating sensor measurements. ATi specializes in rotating telemetry systems which are used to couple data from rotating shafts or machinery to a stationary recorder. Advanced Telemetrics products have been utilized successfully in powertrain testing in automotive, aerospace and a variety of other R&D related applications.
ATi Applications Include:
- NASCAR: An instrumented yoke system monitors torque in real-time, "on-the-track". Our system was the first to provide reliable and accurate measurements of this kind. Rotating components were subjected to 10,000 RPM and extreme shock, heat and vibration. Did not require shock mounting.
- 24 Channel Strain Gage monitoring system for Steam Turbine Blades.
- Primate Research; 16 channel system transmits lower back strain from within primate specimen.
- Automotive drive-shaft and half-shaft torque monitoring. Major powertrain facilities have standardized on our systems for in-vehicle torque measurement.
- Driveshaft torque measurement aboard a High Speed NAVY Powerboat. All rotating components reside in a double cardan joint.
- Shaft vibration monitoring on-board Naval submarine.
- Torque Monitoring on shaft inside automatic transmission.
- Temperature monitoring on separator plates inside automatic transmission.
- Blade strain on Helicopter and Aircraft blades.
Rotating Telemetry Systems
Band-on Rotating Telemetry Systems
Description
The ATi Band-On Telemetry System transmits real-time sensor data from a rotating shaft while the system is running. The system consists of one or more rotating signal conditioner/ transmitter modules with battery pack and a stationary receiver. Rotating transmitters are available to interface with most any type of sensor including strain gages, thermocouples, thermistors, RTDs and accelerometers.
The Kevlar band is available in different lengths so this easy to use Band-On system can accommodate just about any diameter shaft 2.3” or larger. This system can operate at up to 2500 G’s.
Data is transmitted via a license-free RF telemetry link for drop-out free reliability.
Transmitter Power is supplied by rechargeable battery pack. A one-channel strain gage transmitter connected to a 350Ω bridge can operate continuously for 15 hours per charge. The Remote On/Sleep feature greatly extends operation when continuous data collection is not required.
The stationary Receiver can be powered directly from 12 VDC or a 110/220 VAC 50/60 Hz adapter and includes an analog output for connection to a Data Acquisition System. Its digital backlit LCD display can be scaled to read out in Engineering units.
Each system comes complete with all required accessories including antennas, AC power adapter or DC power cord for the Receiver, Battery Charger, and all required cables.
Battery Powered Telemetry Systems
Description
ATi’s Battery Powered Telemetry Systems are ideal for transmitting coupled data signals from sensors, which are mounted on rotating shafts or machinery to a stationary receiver. Miniature Digital Transmitters condition and digitize sensor signals from strain gage bridge circuits, thermocouples or voltage transducers onto a RF carrier and transmit them to a stationary Digital Receiver, while the system is running. The receiver demodulates the signal and converts it to a ±2V, ±5V, ±10V or 4-20mA analog output.
Frequencies can be staggered allowing multiple transmitters to be operated in close proximity with no interference. Multiplexing transmitters and multi-channel receivers are also available.
Transmitters are small enough in size to be taped / strapped to the rotating shaft or can be used with a Collar Assembly for quicker installations. Power to the Transmitter can be supplied by a nine-volt battery. The Collar Assembly will clamp directly to a shaft and house the Transmitter and battery as well as house the integral transmitter antenna.
1 Channel ………………………………….. 6500 samples/sec*
2 Channels …………………………….. 3250 samples/sec/ch*
4 Channels …………………………….. 1625 samples/sec/ch*
Resolution ……………………………………………… 14 Bits*
* Other configurations (number of channels, sample rates and resolutions) are available.
Integral Non-Linearity ………………………………. ± 0.10%
Repeatability ………………………………………….. ± 0.025%
Maximum Error …………………………. < 0.15% Full Scale
Half Shaft Torque Measurement Systems
Description
ATi’s Half Shaft Telemetry System transmits torque signals from rotating shafts to a stationary telemetry receiver. It connects directly to strain gages adhered to the shaft converting it into a torque sensor allowing it to transmit shaft torque while the vehicle is operating. This system is a testing tool used by automotive and racing engineers to obtain real-time torque measurements from vehicle drivelines. The system can be installed on most any size shaft and is completely field installable by the user.
The collar, made from two-piece fiberglass composites, has no mechanical parts to wear out as found in slip rings making it lightweight and maintenance free. It requires only 0.50” clearance allowing the collar to be placed almost anywhere on the shaft.
Power is supplied to the Telemetry Collar inductively through a stationary loop adapter for continuous, uninterrupted operation. The receiver features an integral induction power supply, built-in speaker and a digital backlit LCD display which can be scaled to read out in Engineering units. The receiver can be powered directly from 12 VDC or with a 110/220 VAC 50/60Hz adapter and provides an analog output signal representative of the measurement for use in almost any data acquisition system.
The ATi Half Shaft Collar is now available with an optional RPM measurement option. The optical RPM sensor outputs 12 conditioned pulses per revolution.
Battery powered and rechargeable systems are also available.
Transmitters for other sensors or measurements are also available.
Inductively Powered Telemetry Systems
Description
ATi Inductively Powered Telemetry Systems are typically used to transmit data from rotating shafts or machinery to a stationary receiver. The Miniature Strain Gage Transmitter can be connected to strain gages adhered to your shaft in order to transmit shaft torque and thrustwhile the system is running.
Power is supplied to the transmitter inductively for continuous, non-interrupted measurements. No batteries are required because the induction power supply delivers power through a stationary loop antenna to a rotating antenna. The rotating loop antenna and induction power converter are embedded into the collar assembly.
Specialized systems are available for automotive half shafts (drive shafts) and prop shafts.
Multiplexing Telemetry Systems
Description
ATi offers multi-channel and multiplexing telemetry systems for applications that require more than one channel of data.
Multi-Channel Telemetry Systems Multi-channel systems use one or more single-channel transmitters grouped together. Multi-channel systems are typically used on applications where a higher signal bandwidth is needed.
Multiplexing Telemetry Systems Multiplexing systems are typically used on applications with a high channel count, but where bandwidth is less of an issue. Throughputs of up to 1625 samples/second/channel can be achieved with a 4-channel multiplexing transmitter. Multiplexing transmitters are available with up to 32 channels.
Hybrid Telemetry Systems Multi-channel and multiplexing transmitters can be mixed together within the same system. This is particularly useful in applications where both high and low bandwidth signals, such as stain gages and thermocouples, are of interest.
Prop Shaft Torque Measurement Systems
Description
ATi Telemetry Systems are typically used to transmit data from rotating shafts or machinery to a stationary receiver. The Miniature Strain Gage Transmitter can be attached to strain gages adhered to your shaft in order to transmit shaft torque and thrust while the system is running.
Power is supplied to the transmitter inductively for continuous, non-interrupted measurements. No batteries are required because the induction power supply delivers power through a stationary loop antenna to a rotating antenna. The rotating loop antenna and induction power converter are embedded into the collar assembly.
Single piece and split collars are available in most any size, which will clamp or bolt to any shaft size. Receivers are available with a built-in or external induction power supply. Both include a digital backlit LCD display and analog outputs. The unit can be powered direct from 12 VDC or with a 110/220 VAC 50/60 Hz adapter.
Each system comes complete with all required accessories. This includes antennas, AC power adapter or DC power cord for the receiver, and all required cables.
Battery powered and rechargeable telemetry systems are also available.
Miniature Telemetry Transmitters for other sensors or measurements are also available.
Multi-channel and multiplexing telemetry systems are also available
Propeller and Rotor Blade Strain Measurement Systems
Description
ATi Telemetry Systems are typically used to transmit data from rotating shafts or machinery to a stationary telemetry receiver. The 2040BC Miniature Strain Gage Transmitter can be connected to strain gauges adhered to propellers or rotors in order to transmit blade strain or shaft torque in flight.
ATi Telemetry Systems can be used to measure propeller stress on everything from HVAC systems to aircraft to wind power turbines.
Other telemetry transmitters are available for any type of sensor or input.
Transmitter power can be supplied by batteries or inductively for continuous, non-interrupted measurements.
Single piece and split collars are available in most any size, which will clamp or bolt to any shaft size.
Telemetry receivers feature a digital backlit LCD display and analog outputs. The unit can be powered directly from 12 VDC or with a 110/220 VAC 50/60Hz adapter.
Multi-channel and multiplexing telemetry systems are available.
Each system comes complete with all required accessories. This includes antennas, AC power adapter or DC power cord for Receiver, and all required cables.
Rechargeable Battery Telemetry Systems
Description
ATi’s 2100R Series Rechargeable Telemetry System offers more performance and features while providing solutions to common shaft mounted obstacles. Separate but simultaneous data and status signals allow a variety of control functions independent of the high quality data stream ATi is known for. Battery power means lower noise floors, more versatile installations, no active power generation or tuning.
The 2140R Series Telemetry Transmitters feature a contoured profile, which reduces radial and axial clearances required for installation. Transmitters are available for any type of measurement. Transmitter operation is remotely controlled from the 2125B Receiver, limiting the need for access to configuration switches or make DMM measurements.
Manufactured from fiberglass composites, the 2110RB Telemetry Collars can be used to house the transmitter and battery for easy installation. Single or multi-piece collars mount to the rotating part and transmit the signal to a stationary receiver. The 2140R Miniature Strain Gage Transmitter can be connected directly to strain gages adhered to a shaft, converting it into a torque sensor. Since the system is wireless, it can transmit shaft torque while the shaft is turning.
Often used as a testing tool by automotive and racing engineers to obtain real-time torque measurements from vehicle drivelines, the system can be installed on most any size shaft and is completely field installable by the end user. A rechargeable Li-Ion battery pack supplies power for about 25 hours of continuous run-time to the transmitter. The system comes with a spare battery pack and charger so that power is always available.
The Model 2125B Receiver features a programmable, multi-function, digital backlit display. Transmitter mode (On/Sleep/Off) and remote calibration (+/-) are selected from a menu based display. The receiver can be powered directly from 12 VDC or with a 110/220 VAC 50/60Hz adapter and provides an analog output for use with any data acquisition system.
The 2100R2 and 2100R4 are multi-channel systems with either two or four collars reporting data to a single receiver.
Rotating Telemetry Systems
Description
ATi’s 2100B Series Battery Powered Telemetry Systems are ideal for transmitting coupled data signals from sensors, which are mounted on rotating shafts or machinery to a stationary receiver. Miniature Digital Transmitters condition and digitize sensor signals from strain gage bridge circuits, thermocouples or voltage transducers onto a RF carrier and transmit them to a stationary Digital Receiver, while the system is running.
ATi’s 2100R Series Rechargeable Telemetry Systems offer more performance and features while providing solutions to common shaft mounted obstacles. Separate but simultaneous data and status signals allow a variety of control functions independent of the high quality data stream ATi is known for. Battery power means lower noise floors, more versatile installations, no active power generation or tuning.
ATi’s 2100i Series Inductively Powered Telemetry Systems are ideal for long term, uninterrupted measurements or for installations on which changing or charging batteries is not feasible. Power is supplied to the Telemetry Collar inductively via the stationary loop
Tire and Wheel Testing Systems
Description
Tire and Wheel Testing Systems can be custom designed and manufactured for practically any application.ATi designed and built this custom system, shown to the right, for a major defense contractor. The inductively powered system is used to wirelessly measure tire pressure and temperature during testing. The system also incorporates a valve for incremental pressure adjustment or immediate deflation in an emergency.
Transmitters are available for any sensor input including, strain gages, thermocouples, RTDs, voltage, amperage, etc. Custom systems with assorted input types and numbers can be manufactured for as required. Onboard sensor excitation and signal conditioning is also contained within the transmitters. In addition to the display, the stationary receiver provides real time analog outputs that can be recorded for further analyzing. Analog outputs can be ±2 VDC, ±5 VDC, ±10 VDC, 4-20 mA or other tailored to your requirements.
Systems are available in battery powered, rechargeable or inductively powered, depending on the system requirements. Systems are also available for measuring propeller or rotor blade stresses, shaft torque and any number of other parameters.
Ultra-Thin Telemetry Collar
Description
The Ultra-Thin Telemetry Collar houses all of the electronics needed to provide a precision radio frequency link from sensors mounted on rotating shafts to stationary data acquisition and display instruments.
Induction Powered
Power is supplied to the transmitter inductively for continuous, non-interrupted measurements. No batteries are required because the induction power supply delivers power through a stationary loop antenna to a rotating antenna. The rotating loop antenna and induction power converter are embedded into the Ultra-Thin Collar assembly. Single piece and split collars are available in most any size to clamp or bolt to any shaft.
Transmitters
Transmitters are available for transmitting signals from accelerometers, RTDs, strain gages, thermocouples, thermistors or any other current or voltage type transducer or sensor. The miniature transmitters incorporate a crystal oscillator that is tuned to an exact frequency eliminating the need for tuning by the end user. Transmitter frequencies can be staggered allowing multiple transmitters to be operated in close proximity with no interference. This allows for multi-channel systems or multiple systems to function within the same area. The transmitter modulates the sensor signals onto a RF carrier and transmits them to a stationary receiver.
Receivers
The receiver demodulates the signal and converts it to a ±2, ±5, ±10VDC or 4-20mA analog output. The receiver has buttons on the front panel to remotely activate the transmitter’s bipolar Shunt Calibration feature.
Wheel Mounted Telemetry Systems
Description
ATi’s Wheel Mounted Telemetry System is designed for the measurement of critical parameters from a rotating wheel. In today’s highly competitive automobile marketplace, the safety and comfort of passengers is more important than ever and has higher consideration when consumers are choosing a new vehicle.
This new device, which comes in a multitude of configurations, allows manufacturers of wheel and tire components, as well as suspension and drive train mechanics, to accurately and thoroughly measure various parameters to best optimize the performance of their product. Designed to be mounted directly on the existing wheel rim without any modifications of the wheel hub, the system can be used to provide data on tire characteristics, suspension systems, brake performance, drive train and more.
Capable of withstanding the harsh environments of automobile road testing, the system can operate over the full speed range of light cars, trucks and SUV’s. The optional angle encoder determines the angular position of the wheel and the modular design allows transmitters to be easily swapped so different parameters or test setups can be configured. Hub adapters can be designed to accommodate both 4 or 5 lug patterns or customized lug patterns and include special Lug Nuts that are designed to replace stock lug nuts.
Consisting of one or more 2040 Series Transmitters, the system can accommodate acceleration, pressure, temperature and most any other measurement from a rotating wheel. These transmitters provide the needed excitation and signal conditioning of the sensor data which is transmitted via telemetry to a receiver module located within the vehicle cab for data collection and analysis. No FCC license is required to operate these transmitters.
Torsional Vibration Monitoring Systems
Torsional Vibration Monitoring Systems
Description
ATi’s Torsional Vibration Monitoring Systems are used for Noise Vibration and Harshness (NVH) testing and analysis in automotive drivetrain, wind turbine gearbox and various other applications where measuring or monitoring rotating vibration is important. These systems are used to transmit torsional acceleration from a rotating shaft or component, while the machinery is running.
The system consists of a transmitter and two accelerometers housed in a rotating collar. The accelerometers are mounted 180 degrees apart with the output processed by the transmitter such that gravitational effects are cancelled. This proprietary circuitry permits extremely high sensitivity measurements. The conditioned signal is then transmitted to the receiver. Available in multiple and single piece versions, the rotating collars are available to clamp onto most any size shaft.
Transmitter Power is supplied in one of three ways: battery, rechargeable battery, or inductively. Inductive power delivered through a stationary loop antenna to a rotating antenna in the collar and is recommended for continuous, non-interrupted measurements.
In addition to a display, the receiver also has analog outputs which can be monitored or recorded for analysis. Each system comes complete with all required accessories including: antennas, AC power adapter or DC power cord for Receiver, and all required cables.
Wireless Torque Sensors
Dynamic Torque Sensing System
Description
ATi’s Dynamic Torque Sensing Systems are utilized in applications where conventional rotary torque transducers are not practical due to excessive shaft speeds, vibration, and dirty, oily environments. These factors pose majorproblems for conventional foot-mounted rotary torque transducers’ bearings and slip rings.
Extreme sensitivity. A second dynamic output is available, which can be set for a full range as low as 1% of the primary output. Thus, output resolution can be as low as 0.0025% of the full primary output range. The secondary dynamic output would also have an overload capability of 500:1. This makes the sensor extremely useful for measuring gear mesh torsional data or extremely small torque fluctuations. This is possible since the data is not corrupted by bearing noise from the sensor.
Highly reliable and durable. RF Telemetry is used for data transfer while Induction Power is used for power transfer to the rotating sensor. These technologies permit excessive movement between the rotating sensor and stationary loop antenna with no effect on the signal quality – minimal alignment between the stationary and rotating components is required.
Immune to the Environment. The RF Telemetry and Induction Power are also immune to dust and oil build-up.
Flex-plate Torque Sensing Systems
Description
ATi’s FlexPlate Torque Sensing Systems permit in-vehicle Engine Output torque measurements. A customer-supplied flex-plate is converted into a rotating torque sensor. Custom stainless steel sensors are also available to mate directly with engine and transmission components. The flexplate is instrumented for an accurate and dependable torque measurement that is independent of thrust loading, temperature or other environmental factors. Virtually no vehicle modifications are required.
Highly reliable and durable RF Telemetry is used for data transfer while Induction Power is used to transfer electrical power to the rotating sensor. These technologies permit excessive movement between the rotating sensor and stationary loop antenna with no affect on the signal quality – minimal alignment between the stationary and rotating components is required.
Immune to the Environment. The RF Telemetry and Induction Power are also immune to dust and oil build-up unlike Infrared Torque Sensors which are sensitive to not only dirt build-up but shaft movements as well. The sensing element is designed to be immune to thrust loading which occurs when the torque converter heats up. All components are designed to withstand the harshest shock and vibration conditions in addition to 140 degrees C operation. ATi was the first in the industry to successfully measure Indy Car engine output torque in-vehicle using the same technology.
Half Shaft Torque Measurement Systems
Description
ATi’s Half Shaft Telemetry System transmits torque signals from rotating shafts to a stationary telemetry receiver. It connects directly to strain gages adhered to the shaft converting it into a torque sensor allowing it to transmit shaft torque while the vehicle is operating. This system is a testing tool used by automotive and racing engineers to obtain real-time torque measurements from vehicle drivelines. The system can be installed on most any size shaft and is completely field installable by the user.
The collar, made from two-piece fiberglass composites, has no mechanical parts to wear out as found in slip rings making it lightweight and maintenance free. It requires only 0.50” clearance allowing the collar to be placed almost anywhere on the shaft.
Power is supplied to the Telemetry Collar inductively through a stationary loop adapter for continuous, uninterrupted operation. The receiver features an integral induction power supply, built-in speaker and a digital backlit LCD display which can be scaled to read out in Engineering units. The receiver can be powered directly from 12 VDC or with a 110/220 VAC 50/60Hz adapter and provides an analog output signal representative of the measurement for use in almost any data acquisition system.
The ATi Half Shaft Collar is now available with an optional RPM measurement option. The optical RPM sensor outputs 12 conditioned pulses per revolution.
Battery powered and rechargeable systems are also available.
Transmitters for other sensors or measurements are also available.
Miniature Dual Axis Wireless Sensor
Description
ATi can build a custom telemetry system to fit virtually any requirement. This custom, miniature, dual axis wireless sensor measures both torque and thrust (axial force). Two super miniature strain gage transmitters, housed within the sensor body, are powered inductively. Onboard sensor excitation and signal conditioning is also contained within the transmitters. In addition to the display, the stationary receiver provides real time analog outputs that can be recorded for further analyzing. Analog outputs can be ±2 VDC, ±5 VDC, ±10 VDC, 4-20 mA or other tailored to your requirements.
ATi manufactures custom single axis and dual axis sensor systems for a number of applications. In some situations an existing component can be “transducerized” converting it into an inline sensor. In many cases, the existing component can be used with little or no modification, allowing parameters to be measured without expensive and time consuming alterations to the machine.
Battery powered and rechargeable telemetry systems are also available.
Transmitters for other sensors or measurements are also available.
Multi-channel and multiplexing telemetry systems are also available.
Prop Shaft Torque Measurement Systems
Description
ATi Telemetry Systems are typically used to transmit data from rotating shafts or machinery to a stationary receiver. The Miniature Strain Gage Transmitter can be attached to strain gages adhered to your shaft in order to transmit shaft torque and thrust while the system is running.
Power is supplied to the transmitter inductively for continuous, non-interrupted measurements. No batteries are required because the induction power supply delivers power through a stationary loop antenna to a rotating antenna. The rotating loop antenna and induction power converter are embedded into the collar assembly.
Single piece and split collars are available in most any size, which will clamp or bolt to any shaft size. Receivers are available with a built-in or external induction power supply. Both include a digital backlit LCD display and analog outputs. The unit can be powered direct from 12 VDC or with a 110/220 VAC 50/60 Hz adapter.
Each system comes complete with all required accessories. This includes antennas, AC power adapter or DC power cord for the receiver, and all required cables.
Battery powered and rechargeable telemetry systems are also available.
Miniature Telemetry Transmitters for other sensors or measurements are also available.
Multi-channel and multiplexing telemetry systems are also available.
Steering Effort Sensing System
Description
ATi’s Steering Effort Systems are used to measure steering wheel torque continuously, utilizing a strap-on steering wheel sensor that transmits a real time torque measurement via radio telemetry. The sensor is available in most any torque capacity and transmits the torque signal to a portable telemetry receiver. The sensor has a built-in telemetry transmitter which is powered by a standard 9 volt battery. The sensor is quickly and easily attached to the stock steering wheel with cable ties and does not require any modifications to the vehicle. A rubber whip style receiving antenna can be mounted most anywhere and connects to the receiver.
The receiver supplies an analog output for connection to recording devices. Highly reliable, durable and immune to the environment, the system can be used in most any environment and is immune to shock, vibration and extreme conditions. Since no slip rings or stay rods are used, the system is virtually maintenance free and will provide years of trouble free service. Our systems have proven their worthiness in numerous military and race car applications and can withstand the harshest of conditions
Wireless Torque Sensor Systems
Description
ATi’s Wireless Torque Sensor Systems are utilized in applications where conventional torque transducers are not practical due to high shaft speeds, vibration, and dirty, oily environments. These factors pose major problems for conventional foot-mounted rotary torque transducers with bearings and slip rings.
The use of RF telemetry to transfer data eliminates the need for slip rings. This makes our wireless torque meter highly reliable and durable. Batteries or induction power is used to provide energy to the rotating sensor and transmitter. These technologies permit a great deal of movement between the rotating sensor and stationary loop antenna with no affect on the signal quality. Minimal alignment between the stationary and rotating components is required.
RF telemetry and induction power are also immune to dust and oil build-up, unlike infrared torque sensors which are sensitive to not only dirt build-up but shaft movements as well. Anyone who has struggled with an old-fashioned infrared keyless remote entry system for a vehicle will understand why all major automobile manufacturers have switched to RF technology – no pointing or aiming is required.
A Dual Range Torque Sensor is available which allows a second range that can be 10% of the higher range’s full scale. Torque sensors are available in standard Disk, Flange and Shaft styles or can be customized to fit any application. ATi can also turn an existing system component into a wireless torque sensor.