 |
|
|
Condition Based Maintenance (CBM) Software
|
 |
CompactRIO provides a rugged, flexible, intelligent embedded system for a variety of in-vehicle acquisition and control applications such as data logging, noise, vibration and harshness (NVH) testing, rapid control prototyping and for a variety of vehicles such as automotive, military, aerospace, railroad and more. Pilgrim Technology enhanced interface designs are vehicle specific and allow for unique diagnostics to varying vehicle types such as HEMTT, HMWVV and FMTV military vehicles. |
| The system weighs less than nine pounds, can be configured with to up to 64 analog input channels and operates on less than 24 watts. The cRIO can be configured with two cRIO-9211 thermocouple modules, a cRIO-9421 digital input module, a cRIO-9472 digital output module and four cRIO-9201 analog input modules. With the Pilgrim Technology Wireless Module this solution can be completely mobile and embedded in multiple vehicle types. Additionally connection to varying types of vehicle data buses is also supported. Pilgrim Technology has developed a unique power interface to fit specific vehicle types. With the wireless connection, we can interpret the data in real time, which greatly simplifies the data analysis process and provides for real-time and stored data processing. Pilgrim Technology works with many sensors to measure acceleration, wheel speed, air temperature, fuel temperature, tire temperature, pressure, throttle position, brake position, steering position, and suspension displacement, oil condition analysis, fuel level, air flow and advanced acoustic sensors which provide an instant engine condition analysis. |
| |
| Accurate Temperature Measurements |
| Tire temperature significantly impacts traction, and tire wear. With three infra-red temperature sensors mounted to a cantilevered bracket on the front of each tire accuracy of temperature measurement is increased. As the tires warm up, their ability to grip increases until they reach their peak performance, after which an increase in temperature reduces the tires’ ability to grip. With the 24-bit accuracy of the cRIO-9211 thermocouple couple card, we can detect even the slightest increase in temperature. Our testing process consists of three stages: |
| |
|
Initially we adjust the static camber of suspension and the tire pressure until the tires heat evenly across the tread. Coupled with a lateral accelerometer, LabVIEW helps us plot the coefficient of friction as a function of temperature. This information determines the temperature at which the tire grip peaks. Finally, we experiment with suspension settings (toe and camber) to closely maintain the peak temperature. |
| |
|
|
|
DC-DC Converter
