This article from ETLG Inertial Aerosystems describes Systron Donner Inertial's GyroChip uses vibrating quartz tuning tines to sense rate by acting as a Coriolis sensor.
Systron Donner Inertial's Quartz MEMS (Micro Electro Mechanical System) inertial sensors use a one-piece, micromachined inertial sensing element to measure angular rotational velocity. Fundamentally, these sensors produce a signal output proportional to the rate of rotation sensed. They are also used as the sensing element in a new generation of measurement systems, and are an excellent choice for integrators and OEMs.
SDI's innovative quartz inertial sensors are micromachined using sophisticated photolithographic processes. Similar to those processes used to manufacturer millions of quartz digital watches each year, with even greater yield and evolutionary improvements in materials and performance characteristics, the use of piezoelectric quartz material simplifies the sensing element, resulting in exceptional stability over a wide range of operating temperatures and time, and increases reliability and durability.
As a pioneer of quartz MEMS and microelectromechanical technologies, Systron Donner Inertial applies the newest techniques in device miniaturisation to create one of the most comprehensive families of high-quality, high-performance inertial sensing systems and components. It is claimed that several of the company's products and virtually self-contained systems are nearly one-third the size of similar competitive devices.
Systron Donner's GyroChip was described as the industry's first true success in manufacturing a high-yield, one-piece, solid-state implementation with the necessary performance and reliability for a single-chip inertial sensor.
Products manufactured by Systron Donner Inertial are supplied for aerospace, tactical military and commercial aviation, marine, and industrial applications. Wherever accurate measurements are required for rate of change, direction or position, the principles of Quartz MEMS technology are being applied and can be readily designed into products affordably and with confidence in terms of long life, reliability and high performance.
Systron Donner Inertial's products are available in the UK through ETLG Inertial Aerosystems.