ホイール速度センサー IC
私たちの特許取得済みのベスト イン クラス GMR 技術は、最も広範な取り付け許容範囲で、最も小さなジッターと最も大きなエア ギャップを実現します。また、非常に正確なホイール速度とポジション測定に対応する高い精度を備え、高度なブレーキングと自律車両の用途に最適です。Allegro の高度かつ動的なアルゴリズムは、システム バリエーションがある状態で定常状態の出力挙動を保証し、走行時の挙動の異常を補正します。
さらに、安全性は当社の最優先事項の 1 つです。Allegro は、鉄製ターゲットとリング マグネット ターゲットの両方を含む用途に対応し、ISO 26262 仕様 (評価保留中) に準拠して設計された、ホールベースのホイール速度デバイスの全ラインを提供しています。
さらに、安全性は当社の最優先事項の 1 つです。Allegro は、鉄製ターゲットとリング マグネット ターゲットの両方を含む用途に対応し、ISO 26262 仕様 (評価保留中) に準拠して設計された、ホールベースのホイール速度デバイスの全ラインを提供しています。
ホイール速度センサー IC 選択ガイド
| ECAD | ||||
|---|---|---|---|---|
| The A19352 is a giant magnetoresistance (GMR) magnetic sensor integrated circuit (IC) designed to measure ring magnets used in automotive braking systems, to provide wheel speed and direction data. | Speed and Direction | GMR | ||
| Orientation-Independent Hall Effect Speed and Direction Gear Tooth Sensor IC | Speed and Direction | Hall | ||
| ASIL compliant IC with advanced algorithms for high accuracy performance on magnetic encoders or ferrous targets (with back biasing magnet) | Speed | Hall | ||
| ASIL compliant IC with low jitter, high accuracy at low operating magnetic field levels for magnetic encoder sensing | Speed | GMR | ||
| ASIL compliant, pulse width protocol, advanced algorithms for high accuracy performance on magnetic encoders or ferrous targets (with back biasing magnet) | Speed and Direction | Hall | ||
| AK- or pulse width (PW) protocol \n\nASIL compliant IC with advanced algorithms for high accuracy performance on magnetic encoders or ferrous targets (with back biasing magnet) | Speed and Direction | Hall | ||
| AK and pulse width protocol, advanced algorithms for high accuracy performance on magnetic encoders or ferrous targets (with back biasing magnet) with Vibration Detection | Speed and Direction | Hall | ||
| ASIL compliant IC with low jitter, high accuracy at low operating magnetic field levels for magnetic encoder sensing | Speed and Direction | GMR | ||
| Large air gap, ultra low jitter AK Protocol GMR Wheel Speed and Direction Sensor IC | Speed and Direction | GMR | ||
| High-Resolution GMR Wheel Speed and Distance Sensor IC | Speed and Direction | GMR | ||
| Miniature, Two-Wire, True Zero Speed Differential Peak-Detecting Sensor IC | Speed | Hall |
Part Number | 製品の特徴 | Direction Info | Technology |
|---|---|---|---|
| A19352 | The A19352 is a giant magnetoresistance (GMR) magnetic sensor integrated circuit (IC) designed to measure ring magnets used in automotive braking systems, to provide wheel speed and direction data. | Speed and Direction | GMR |
| ATS604 | Orientation-Independent Hall Effect Speed and Direction Gear Tooth Sensor IC | Speed and Direction | Hall |
| A19200 | ASIL compliant IC with advanced algorithms for high accuracy performance on magnetic encoders or ferrous targets (with back biasing magnet) | Speed | Hall |
| A19250 | ASIL compliant IC with low jitter, high accuracy at low operating magnetic field levels for magnetic encoder sensing | Speed | GMR |
| A19301 | ASIL compliant, pulse width protocol, advanced algorithms for high accuracy performance on magnetic encoders or ferrous targets (with back biasing magnet) | Speed and Direction | Hall |
| A19302 | AK- or pulse width (PW) protocol \n\nASIL compliant IC with advanced algorithms for high accuracy performance on magnetic encoders or ferrous targets (with back biasing magnet) | Speed and Direction | Hall |
| A19303 | AK and pulse width protocol, advanced algorithms for high accuracy performance on magnetic encoders or ferrous targets (with back biasing magnet) with Vibration Detection | Speed and Direction | Hall |
| A19350 | ASIL compliant IC with low jitter, high accuracy at low operating magnetic field levels for magnetic encoder sensing | Speed and Direction | GMR |
| A19351 | Large air gap, ultra low jitter AK Protocol GMR Wheel Speed and Direction Sensor IC | Speed and Direction | GMR |
| A19360 | High-Resolution GMR Wheel Speed and Distance Sensor IC | Speed and Direction | GMR |
| ATS682 | Miniature, Two-Wire, True Zero Speed Differential Peak-Detecting Sensor IC | Speed | Hall |
Selection & Solution Guides
Allegro Product Selection Guide (PDF)
Documentation & Resources
Application Note
Giant Magnetoresistance versus Hall-effect: A Comparison of Technologies for Speed Sensor Applications
Allegro MicroSystems giant magnetoresistance (GMR) effect technology offerings build on lessons learned from experience with Hall-effect devices to enable new options for speed sensing system design.
Application Note
Effect of Ring Magnet Dimensions on Differential Speed Sensor Performance
AN296251 - In this application note, we describe how ring magnet dimensions affect speed sensor performance is given.
Technical Article
The Future of Automotive Wheel Sensing with GMR
P0083 - With the rise of vehicle electrification, computerized control systems, and subsystem reliability monitoring, it has become essential for systems to have accurate rotational information for each wheel of the vehicle.
Application Note
Differential Hall-Effect Sensors: Safer and More Reliable for Two-Wheelers of the Future
AN296173 - The use of electronic controls for engine, transmission, and wheel speed in two- and three-wheeled vehicles is growing, particularly in developing nations. This trend is largely driven by mandates to improve air quality, fuel efficiency, and vehicle safety worldwide.
Video
Allegro Differential Speed Sensor System Solutions
Seth Prentice, Strategic Marketing Manager for Allegro MicroSystems Speed Sensor IC group, discusses IC solutions for designing speed sensing applications including automotive transmissions, washing machine drum speeds, and fork lift positioning requiring reliable consistent output signals.
Application Note
Wheel Speed Sensors Operating in Harsh Environments
Wheel speed sensors (WSS) operate in harsh environments with limited shielding and temperature control. Allegro Microsystems has developed innovative algorithms and high-performance sensors to operate in these environments.
Application Note
Speed Sensor Protocols
AN296246 - This application note provides a detailed description of commonly used output protocols implemented in speed sensors. It also lists the benefits and drawbacks of each and provides information on the safety mechanisms these protocols offer to achieve compliance with the latest automotive safety standards.
Application Note
System Advantages of High-Resolution Wheel Speed Sensing
AN296228 - With the vehicle market trending toward autonomous driving in the near future, the need for high resolution in the wheel speed sensor (WSS) business becomes essential. Allegro, with input from market leaders, has released the first high-resolution wheel speed sensor (HRWSS) that targets this demand.
Application Note
Methods and Validation of Stray Magnetic Field Mitigation in Magnetic Speed Sensor ICs
AN296250 - This document provides an overview of the phenomena of stray magnetic fields, its various sources, solutions developed to minimize its effects, and product proposals tolerant to stray field perturbations.
Application Note
Understanding Input Signal Variation in Sensor ICs with SolidSpeed Digital Architecture
AN29622 - This application note is to be used to aid the understanding of these datasheet line items. This specification change can be seen in the A19302 and A19571 datasheets and will continue to be used in many parts that use this technology moving forward
Brochure
Brochure: Allegro Wheel Speed Sensor ICs
Options to meet your evolving needs.
Brochure
Brochure: High-Resolution GMR Wheel Sensing
The Allegro A19360 high-resolution wheel speed and distance sensor provides all the robustness of a standard differential speed sensor, but with up to four times the incremental resolution from the same magnetic encoders used today.
Application Note
Fundamental Properties of Speed Sensors
The aim of this application note is to provide a solid foundation for understanding and comparing the fundamental properties of speed sensors that are valid not only for Allegro products but for speed sensors in general.