Transmission speed sensors provide the transmission control unit with information on the input, output, or intermediate speed of the transmission (TCU). By adjusting the shifting pressure and selecting the gear to be engaged, the TCU makes use of this signal.
Since the powertrain control module won’t be able to properly operate the gear shifts without a speed signal from the sensors, this will present a problem. The transmission won’t function properly as a result of this. Either it will shift more swiftly than anticipated or more roughly than anticipated.
One can choose between active or inductive versions of transmission speed sensors. High electromagnetic compatibility (EMC/ESD), a compact and flexible design, a light weight, and optional rotational-direction recognition are the distinguishing features of the active variant.
With a large output signal at a low speed and a mounting that is independent of position, the inductive variation dazzles (TIM). It is possible to connect hydraulically, with various plug types, and with transmission pressure sensors. It is possible to put the transmission sensor inside or outside the transmission.
The Global Transmission Speed Sensors Market accounted for $XX Billion in 2021 and is anticipated to reach $XX Billion by 2030, registering a CAGR of XX% from 2022 to 2030.
The most cutting-edge transmission speed sensor ICs are launched by Allegro Microsystems.
The most cutting-edge transmission speed sensor family members from Allegro MicroSystems have been made available, and they have been certified according to ASIL B standards.
The A19520, A19530, and A19570 magnetic sensor ICs are the result of nearly 20 years of application-specific experience and technological innovation, including GMR and Hall effect technology, making them the perfect choice for addressing the rigorous needs of today’s transmission applications.
According to Allegro Microsystems’ Senior Product Line Director for Speed Sensors, “Up until now, there haven’t been any transmission speed sensors on the market that were built using an ISO 26262 approved design process.
“They’re delighted that all three of these speed sensors will be able to enhance the state of the art in transmission safety and enthusiastic to bring them to market.”
The magnetic sensor ICs A19520, A19530, and A19570 measure speed and direction data and incorporate EMC protection capacitors.
Additionally, Allegro’s SolidSpeed Digital ArchitectureTM, a revolutionary mixed-signal architecture that enables the widest dynamic range of air gap, differentiation of vibration from rotation, stray field immunity, and highly adaptive performance, is incorporated into the sensors.
Each item offers something special to the family. Due to its industry-leading performance and customizable output protocols, the A19520 enables compatibility with current transmission schemes. A two-wire interface and Hall effect technologies are both utilised.
Advanced signal processing, open/short detection, and adjustable speed or speed and direction output protocols are also features of the A19530. A three-wire interface and the Hall effect are both utilised.
The A19570 offers the same high algorithmic performance as its Hall effect competitors using GMR and a two-wire interface—but at significantly larger air gaps and with flexible device orientations.
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