Central Locking with Remote Keys and Reed Switches

Reed switches in central locking with remote keys

Central locking systems provide convenient control over the locking and unlocking of all doors in an automobile, offering enhanced security and ease of access. This functionality is facilitated by a sophisticated system that integrates electronic key technology with reed sensors for seamless operation.

The central locking system relies on a secure coded radio frequency signal transmitted from an electronic key, which has been previously paired with the vehicle’s microprocessor. When the key code is authenticated by the onboard computer, a signal is relayed to the central locking system, enabling simultaneous locking or unlocking of all doors.

While remote key fobs primarily control the central locking system, reed switches play a vital role in facilitating manual door opening. These sensors are strategically mounted on the doors, while magnets are positioned beneath the door handles. When a door handle is lifted, the movement is detected by the reed switch, which promptly sends a signal to the computer to initiate door opening.

In addition to their role in central locking, reed switches also offer added security benefits by serving as intrusion detection devices. When a door is opened in an unlocked condition, the reed sensor detects the unauthorized entry and triggers the vehicle’s alarm system, alerting the owner to the potential security breach.

The utilization of reed switches in central locking systems underscores their versatility and reliability in automotive applications. They provide a robust solution for door control and security, enhancing the overall functionality and safety of modern vehicles. By seamlessly integrating electronic key technology with reed switch technology, automotive manufacturers deliver advanced central locking systems that prioritize convenience, security, and peace of mind for vehicle owners.

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.

Magnet Biasing Type

Some special field applications, for the sake of circuit logic, security concerns, or a power saving necessity, require a sensing signal Continue reading ->

Nov 17, 2024

Recommended Products

The Reed Switches and Sensors used in such remote access 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.