With the growing demand for rail transportation and efficient trains, there is a requirement to build innovative control, signaling and navigation solutions to provide passengers with safe, reliable, maintainable and predictable service. Jewell Instruments has been supplying sensors for driver and driverless metro trains worldwide for nearly half a century. Our sensors are crucial components in safety and control systems providing a safe, controlled ride.
Jewell Instruments’ Inertial sensors are part of the multiple sensing technologies that can be found inside many trains or in the trackside infrastructure to ensure a high quality of service. Jewell Instruments’ high performance accelerometers are the heart of demanding train functionalities. Inertial sensors can also be used to monitor passenger comfort or to provide accurate positioning of rail defects when embedded into a diagnostic vehicle operating on rails. Jewell Instruments offers multiple technologies and a wide range of sensors for Rail Applications. Our RailStar branded accelerometers and inclinometers include both high performance Force Balance sensor technology that can be fluid-damped for vibration and shock, as well as MEMs-based sensor technology.
Our RailStar line offers high-performance sensors and control products for the rail transportation industry. Many of the products in this line meet CENELEC and AREMA Standards.CENELEC & AREMA Tests Performed CENELEC & AREMA Certified Models
Rail Maintenance of Way (RMOW)
Rail maintenance-of-way is a crucial part of keeping tracks in working order. From clearing ditches to removing ballasts from beneath the tracks to inserting ties, plates, and spikes, the work is grueling. Over the years, machinery has taken the place of manual labor. These massive machines require high accuracy and rugged solutions to measure low-frequency tilt where high shock & vibration are present. Jewell specializes in sensors that provide feedback for tilt in track construction, rail renewal projects, tie exchanges, rail resurfacing, and more.
Our precision force-balanced and MEMS sensors are rugged, high-performance devices designed for peak performance in extreme conditions. The fluid damped mechanism of our force-balanced sensors deliver superior noise rejection in high shock and vibration environments as well as excellent output stability. Their reliable dynamic response, wide input range, high-shock & vibration tolerances, low-thermal drift and low-cost make these sensors the best solution for critical rail projects that require accurate measurements.
Rail Automated Train Controls (RATC)
Railway trains make perfect candidates for driverless automation. The tracks are fixed and acceleration and deceleration can be moderated remotely using sensors. Jewell sensors can be found in rapid transit, metro, and high-speed train systems worldwide. Our sensors accurately determine train position using mathematical double integration providing train acceleration/deceleration and position feedback. Some can even accurately sense centripetal acceleration for railcar tilt control.
With high reliability, the LSBC, LCA and LCF series accelerometers are utilized in speed trains and metro systems throughout the world. These sensors are crucial components in safety and control systems providing a safe, controlled ride by providing train acceleration, deceleration and position informaiton. It also accurately and reliably senses centripetal acceleration for railcar tilt control, which help customers attain higher speeds on existing tracks for reduced travel time and maintain ride’s comfort.
Rail Test and Measurement (RT&M)
Rail testing and measurement is a critical step in any maintenance program. The smallest inconsistency could spell disaster if overlooked. Jewell sensors provide high accuracy tilt input for laser surveying recorders establishing catenary, superelevation, and cross-rail position. Our sensors also provide information for pitch and roll, acceleration/deceleration, platform tilt, and vibration tests for railcars, subways, and tilt train applications. We also offer sensors that provide tunnel tilt measurement.
Our LCF and new LSOX design are rugged high-performance inclinometers used for manual and automated rail profiling: To achieve a safer, smoother ride, particularly for the new generation of very high-speed trains.