Switching device
In an embodiment, a switching device includes at least one stationary contact, a movable contact, an armature, a permanent magnet and a magnetically-operated switch, wherein the movable contact is movable by the armature, wherein the permanent magnet is attached to the armature, and wherein the magnetically-operated switch is a Hall switch.
1. A switching device comprising:
at least one stationary contact;
a movable contact;
an armature;
a permanent magnet; and
a magnetically-operated switch,
wherein the movable contact is movable by the armature,
wherein the permanent magnet is attached to the armature,
wherein the magnetically-operated switch is a Hall switch,
wherein the magnetically-operated switch is connected to a signal processing device,
wherein the signal processing device comprises a measuring resistor directly connected in series to the magnetically-operated switch, and
wherein the signal processing device is configured to detect a state of the magnetically-operated switch.
2. The switching device as claimed in claim 1 , wherein the magnetically-operated switch is configured to be in the state selected from a first state and a second state depending on a magnetic field.
3. The switching device as claimed in claim 2 , wherein the magnetically-operated switch is configured to generate a first current in the first state and a second current in the second state, the second current being different to the first current.
4. The switching device as claimed in claim 2 , wherein the magnetically-operated switch is in the first state or in the second state depending on a distance of the permanent magnet to the magnetically-operated switch.
5. The switching device as claimed in claim 1 , wherein the permanent magnet is arranged at an end of the armature remote from the movable contact.
6. The switching device as claimed in claim 1 , wherein the armature comprises a magnetic core and a shaft, and wherein the permanent magnet is attached to the magnetic core and/or to the shaft.
7. The switching device as claimed in claim 6 , wherein the permanent magnet is a ring magnet arranged symmetrically with respect to the shaft of the armature.
8. The switching device as claimed in claim 1 , wherein the at least one stationary contact, the movable contact, the armature and the permanent magnet are arranged within a gas-tight region.
9. The switching device as claimed in claim 8 , wherein the magnetically-operated switch is arranged outside the gas-tight region.
10. The switching device as claimed in claim 1 , wherein the signal processing device comprises a comparator configured to compare a voltage drop across the measuring resistor with a reference voltage.
11. The switching device as claimed in claim 10 , wherein the reference voltage is predetermined by a Zener diode.
12. The switching device as claimed in claim 11 , wherein the magnetically-operated switch, the Zener diode and the comparator are connected to a common voltage supply.
13. The switching device as claimed in claim 10 , wherein the signal processing device comprises an electronic switch having a control input connected to an output of the comparator.
14. The switching device as claimed in claim 13 , wherein the control input of the electronic switch is connected to the output of the comparator via a voltage divider.
15. The switching device as claimed in claim 1 , wherein the measuring resistor is configured to measure a voltage with respect to the magnetically-operated switch.
16. A switching device comprising:
a movable contact being movable by an armature;
a permanent magnet attached to the armature;
a magnetically-operated switch being a Hall switch; and
a signal processing device comprising:
a measuring resistor directly connected in series to the magnetically-operated switch;
a comparator configured to compare a voltage drop across the measuring resistor with a reference voltage, the reference voltage being predetermined by a Zener diode; and
an electronic switch having a control input connected to an output of the comparator,
wherein the magnetically-operated switch, the Zener diode and the comparator are connected to a common voltage supply, and
wherein the control input of the electronic switch is connected to the output of the comparator via a voltage divider.
17. The switching device as claimed in claim 16 , wherein the measuring resistor is configured to measure a voltage with respect to the magnetically-operated switch.
18. A switching device comprising:
a stationary contact and a movable contact; and
a permanent magnet and a magnetically-operated switch,
wherein the magnetically-operated switch has a first state and a second state and is switchable between the first and second states as a result of a distance of the permanent magnet to the magnetically-operated switch,
wherein the magnetically-operated switch is connected to a signal processing device, the signal processing device being configured to detect a state of the magnetically-operated switch,
wherein the signal processing device comprises a measuring resistor connected in series to the magnetically-operated switch, and
wherein the measuring resistor is directly connected to the magnetically-operated switch.
19. The switching device as claimed in claim 18 , wherein the measuring resistor is configured to measure a voltage with respect to the magnetically-operated switch.