Anti-lock braking system (ABS) Use Reed Sensors

The Anti-lock Braking System (ABS) represents a pivotal safety feature utilized not only in vehicles but also in aircraft. In the realm of automotive safety, ABS plays a crucial role in preventing wheels from locking up during sudden braking maneuvers, especially when the vehicle is already in motion, thereby averting potential skidding and loss of control. This technology relies on sophisticated onboard electronics to apply differential hydraulic pressure to individual brakes, ensuring optimal braking performance under challenging conditions.

The operational principle of anti-lock braking hinges on the real-time measurement of wheel speed, facilitated by reed sensors strategically positioned near each wheel and magnets affixed to the wheels themselves. This setup allows for the precise monitoring of the rotational speed of each wheel as braking occurs. By continuously comparing the individual wheel speeds, the ABS system can detect discrepancies indicative of potential wheel lock-up or impending skidding.

As braking dynamics evolve, the anti-lock braking system dynamically adjusts hydraulic pressure to each brake disc, mitigating the risk of fishtailing and skidding. If certain wheels are found to be spinning faster or slower than others, the ABS system modulates hydraulic oil pressure to those corresponding brake discs, ensuring balanced braking force distribution across all wheels.

According to a study conducted by the National Highway Traffic Safety Administration (NHTSA), vehicles equipped with ABS are significantly less likely to be involved in fatal crashes compared to those without ABS. Furthermore, ABS has been shown to reduce the risk of multiple vehicle crashes by up to 34% and the risk of single-vehicle crashes by up to 56%.

Through the seamless integration of reed sensor technology and advanced hydraulic control systems, ABS enhances vehicle safety by promoting stable and controlled braking performance, even in adverse driving conditions. By preventing wheel lock-up and maintaining steering control, ABS contributes to reducing the likelihood of accidents and enhancing overall road safety for drivers and passengers alike.

Application Classification

Applications are classified as Position Sensing, Pulse Counting, Electromagnetic or Relay, Temperature Sensing or Magnet Biasing types. This application is classified as follows and the link gives more information on best practices to help select the most suitable AT band and matching magnet.

Pulse Counting Type

When an application requires the volume of a fluid, or a distance, or the RPM of a machine tool measured, such an application can be Continue reading -> Jun 18, 2025

Recommended Products

The Reed Switches and Sensors used in ABS applications need to be robust, durable and efficient in meeting a high life expectancy. Our engineers work hard in life testing our products under various conditions, and our intention is to ensure end product durability and life. Although we wouldn’t want to restrict any of our products for use in only certain applications, the recommended products for use in this application are listed below.

Sub Miniature Reed Switch, SM-1322

Reed Switch with Full Length LeadsCropped LeadsSMD Formed LeadsHorizontal MountingVertical Mounting starFeaturesRelease AT Continue reading -> Jul 14, 2025

Large Cylindrical Magnet Sensor, MS-216-L

Drawing of MS-216-L Magnet Sensor starFeatures10W Contact Rating. Normally Open contact. Three sensitivity bands. Sputtered Ruthenium Continue reading -> Jun 18, 2025

M8 Threaded Sensor Cylindrical Sensor, MS-228

MS-228 M8 Threaded Sensor Drawing starFeatures30W Contact Rating. Normally Open contact. Three sensitivity bands. Sputtered Ruthenium Continue reading -> Jun 18, 2025

Line Voltage switching Reed Switch, LV-1925

Full Length LeadsCropped LeadsSMD Formed LeadsVertical MountingHorizontal Mounting starFeaturesContact Rating Configurable. Ruthenium Continue reading -> Jul 14, 2025