New high-speed optical sensors for turbocharger speed measurement and other embedded applications

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Texys Group displayed its latest range of sensing solutions at Automotive Testing Expo Europe this week, including a variety of new products resulting from its acquisition of two companies – Optel and LGS – in 2020. This has resulted in the integration and development of a variety of fiber-optic speed sensing systems, the latest of which is a highly compact unit intended for embedded applications running at very high speeds. With a detection range of 1-5mm and able to operate with a switching frequency of up to 300kHz, the 152G7-E has been designed specifically for integration into operational prototypes instead of being limited to use on the test bench.

Speaking at the expo, the company’s head of business development, Ivan Tattier, explained, “This uses the same technology as our other systems but you don’t have the big potentiometer and it is auto-adjusting. We are equipping a lot of projects such as Formula 1 engines – for turbocharger speed, MGUs – with this. It is very robust and designed to be embedded.”

Another notable new offering from Texys is a range of instrumented bolts called TM-Fast. These enable the monitoring of fastened joints, covering fixings from M4 up to M30. The fastenings integrate a strain gauge within the head of the bolt, ensuring mechanical integrity. They can be specified with fixed wire connections, removable magnetic connections or the latest development: wireless communication. The TM-Fast bolts can also feature either an integrated signal conditioner or remote options. According to Tattier, the system was initially developed for use in heavy industrial settings. However, it has proved popular with automotive and motorsport clients, including one World Rally Championship manufacturer.
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Lawrence has been covering engineering subjects – with a focus on motorsport technology – since 2007 and has edited and contributed to a variety of international titles. Currently he is responsible for content across UKI Media & Events' portfolio of websites while also writing for the company's print titles.

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