Reed Relays and
Electronics India Limited
Manufacturer of Reed Switches, Reed Sensors and Reed-based products
Reed Relays and Electronics India Limited Incorporated in 1971

Magnet sensors in Anti-lock braking system (ABS)

Reed switches in ABS control system
Anti-lock Braking

Anti-lock braking system or ABS for short, is a safety system used on aircraft and on vehicles, such as cars, motorcycles, trucks and buses. When a sudden brake is applied, particularly when the vehicle is already turning, the ABS operates by preventing the wheels from locking up during braking. The on-board electronics need to apply differential hydraulic pressure to each brake to prevent the car from fishtailing and skidding. This is achieved by measuring the speed of all the wheels individually by using reed sensors that mounted near the wheels and magnets on the wheels themselves. This way, the individual rotational speed of each wheel is fed back to the computer, as braking takes place, and if certain wheels are spinning faster or slower, more or less hydraulic oil pressure is fed into those corresponding brake discs. This almost ensures smooth braking of the vehicles, under trying situations.

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
Speedometer pulse counting Pulse counting type application When an application requires the volume of a fluid, or a distance, or the RPM of a machine tool Continue reading ->

Feb 28, 2024

The Reed Switches and Sensors used in such 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.

SM-1322 Sub Miniature Reed Switch
Sub Miniature Reed Switch Size This Form A type SM-1322 Sub Miniature Reed Switch is built with a 2.25 mm diameter glass with a higher wall thickness for better glass to Continue reading ->

Nov 8, 2022

MS-216-L Cylindrical Sensor for Line Voltages
cylindrical sensor for line voltage icon Drawing of MS-216-L Magnet Sensor starFeatures10W Contact Rating. Normally Open contact. Three sensitivity bands. Sputtered Ruthenium Continue reading ->

Oct 30, 2020

MS-228, M8 Threaded Cylindrical Sensor
M8 threaded cylindrical sensor MS-228 M8 Threaded Sensor Drawing starFeatures30W Contact Rating. Normally Open contact. Three sensitivity bands. Sputtered Ruthenium Continue reading ->

Nov 20, 2020

LV-1925 Reed Switch for Line Voltage switching
Reed Switch for Line voltage switching The LV-1925 is a Line Voltage Reed Switch is designed for endurance at switching line voltage loads of 230V. Two versions are capable of Continue reading ->

Dec 2, 2020