Imported Weigele proximity switch arrives in Shanghai

Imported Weigele proximity switch arrives in Shanghai
The Weigele proximity switch has a wide range of applications in aviation, aerospace technology, and industrial production. In daily life, automatic doors and hot air fans are used in hotels, restaurants, and garages. In terms of security and theft prevention, important places such as archives, finance, accounting, museums, and vaults are usually equipped with anti-theft devices composed of various proximity switches. In measurement techniques, such as measuring length and position; In control technology, a large number of proximity switches are also used for measuring and controlling displacement, velocity, and acceleration.

Imported Weigele proximity switch arrives in Shanghai
Types of Weigele proximity switches
Passive proximity switch
This type of switch does not require a power supply, and its closed state is controlled by magnetic induction. When the magnetic or iron trigger approaches the switch magnetic field, it controls the closure by interacting with the internal magnetic force of the switch. Features: No need for power supply, non-contact, maintenance free, environmentally friendly.
Eddy current proximity switch
This type of switch is sometimes called an inductive proximity switch. It uses conductive objects to generate eddy currents inside the object when approaching the proximity switch that can generate an electromagnetic field. This eddy current reacts with the proximity switch, causing changes in the internal circuit parameters of the switch, thereby identifying the presence or absence of conductive objects moving closer and controlling the on or off of the switch. The object that this proximity switch can detect must be a conductive material.
1. Principle: The oscillator is composed of an inductor, a capacitor, and a transistor, and generates an alternating magnetic field. When a metal object approaches this magnetic field, eddy currents are generated inside the metal object, causing the oscillation to stop. This change is amplified by the back pole and converted into a transistor switch signal output.
2. Features: A. Good anti-interference performance, high switching frequency, greater than 200HZ. B. Can only sense metals
3. Applied to various mechanical equipment for position detection, counting signal picking, etc.
Capacitive proximity switch
The measurement of this type of switch usually involves one electrode of the capacitor, while the other electrode is the outer shell of the switch. This casing is usually grounded or connected to the device casing during the measurement process. When an object moves towards a proximity switch, regardless of whether it is a conductor or not, its proximity always causes a change in the dielectric constant of the capacitor, resulting in a change in capacitance and a change in the state of the circuit connected to the measuring head. This allows for the control of the switch's on or off state. The objects detected by this proximity switch are not limited to conductors, but can also be insulating liquids or powders.
Hall proximity switch
Hall element is a type of magnetic sensitive component. A switch made using Hall elements is called a Hall switch. When a magnetic object moves closer to the Hall switch, the Hall element on the switch detection surface generates the Hall effect, causing a change in the internal circuit state of the switch, thereby identifying the presence of a magnetic object nearby and controlling the on or off of the switch. The detection object of this proximity switch must be a magnetic object.
Photoelectric proximity switch
A switch made using the photoelectric effect is called a photoelectric switch. Install the light-emitting device and the optoelectronic device in the same detection head in a certain direction. When a reflective surface (the object being detected) approaches, the photoelectric device receives the reflected light and outputs a signal, thereby "sensing" that an object is approaching.
Other types
When the observer or system changes the distance to the wave source, the frequency of the approaching wave will shift, and this phenomenon is called the Doppler effect. Sonar and radar are made using the principle of this effect. Doppler effect can be used to create ultrasonic proximity switches, microwave proximity switches, etc. When an object approaches, the reflected signal received by the proximity switch will produce a Doppler frequency shift, which can identify whether an object is approaching.

Performance characteristics of Weigele proximity switch
In various switches, there is a component that has the ability to "perceive" objects approaching it - a displacement sensor. The use of displacement sensors to control the on or off of proximity switches based on their sensitivity to approaching objects is called proximity switches.
When an object moves towards the proximity switch and approaches a certain distance, the displacement sensor will "sense" and the switch will act. This distance is usually referred to as the 'detection distance'. But the detection distance of different proximity switches is also different.
Sometimes the object being tested is moved towards the proximity switch one by one at a certain time interval, and then left one by one, repeating this process continuously. Different proximity switches have different response capabilities to the detected object. This response characteristic is called "response frequency".

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