Hall sensor is a kind of non-contact sensor. It not only has the effect of energy saving compared with the use of microprocessors, but also enhances reliability and the repairing cost is lower.
Hall sensor is a sensor based on semiconductor technology, it is according to the theory of changing the induced voltage in response to the changes of magnetic field. This kind of sensor incorporate Hall-effect sensing elements into the circuit to provide a digital switch or analog output signal that responds to changes in the magnetic field, and there is not any requirement of moving parts.
Different from traditional magnetic reed switch, the Honeywell sensor element has the source circuit, therefore it always needs little current. For example, Hall sensors are very common in the application of speed sensors in washing machines.
The speed of washing machines’ roller is monitored by a multistage magnet (16 or 32 poles) connected with motor reel. This magnet is rotating above the Hall sensor who with great speed testing function. And the digital speed signal was sent to the control unit, which controls the motor speed internally in order to obtain various speed period.
Honeywell sensor is not effected by the mechanical contact mechanical wear or oxidation accumulation, therefore it has strong reliability and durability; The output signal options for Hall sensors including position sensing signal and or the ratio of rotational induction to measure the output value, this signal can provide the transient response, so that to ensure more strict control and better resolution, bringing enhanced sensing accuracy.
Besides, for the requiring strict tolerance application such as home appliance equipment, Honeywell sensor has bigger flexibility, which is very important. Finally, unlike mechanical devices with visible levers or buttons, Hall sensor is also hidden behind the electrical panel, it can produce a more stylish and attractive design, which is more welcomed by most customers.
Post time: Jun-13-2023