APPLICATIONS

Automobiles
Home electronics
Health and leisure equipment
Industrial equipment
Detection method

Automobiles

Seat belt

A magnet keeps the contact normally ON. When a metal fitting is placed between the reed switch and magnet, the magnetic field is interrupted and the contact goes OFF.

Detection method: Position detection

Air Bags

Detects impact during a collision by magnet movement.

Detection method: Shock detection

Home electronics

Security Sensor

Sensor detects movement of magnet due to opening/closing of windows and doors.

Detection method: Position detection

Gas Meter

In a gas flow rate sensor, a proximity switch is turned ON/OFF by the movement of a magnet in the flow rate detection section. The reset button turns the proximity switch ON/OFF using the magnet when the button is operated.

Detection method: Rotation detection

Health and leisure equipment

Exercise Machines

Sensor detects number of tire rotations.

Detection method: Rotation detection

Pedometer

Detects oscillating motion when walking, based on magnet movement.

Detection method: Oscillating motion detection

Pachinko (Japanese Pinball) Machines

A magnet keeps the contact normally ON. When a pachinko ball (which is a magnetic body) passes through, the magnetic field is interrupted and this turns the contact OFF.

Detection method: Passage detection

Industrial equipment

Reed Relays [Semiconductor Testers]

Reed relays are used for measurement circuit switching in semiconductor testers. In a reed relay, a coil is wrapped around the outside of a reed switch, and the switch is actuated by energizing the coil.

Detection method: Circuit control

Detection method

Fluid level detection

Detects vertical movement of a ring magnet due to an increase or decrease in the fluid level of the measured object.

Rotation detection

As the impeller rotates due to fluid pressure, a magnet rotates also, and a contact goes ON/OFF.