Inductive voltage generator

• US 20050035600A1
• Filed: 05/22/2002
• Published: 02/17/2005
• Est. Priority Date: 05/22/2001
• Status: Abandoned Application

• Current Assignee: EnOcean GmbH
• Original Assignee: EnOcean GmbH
• Inventors: Bulst, Wolf-Eckhart, Sczesny, Oliver, Schmidt, Frank, Pistor, Klaus, Albsmeier, Andre, Guntersdorfer, Max
• Application Number:
  US10/478,028
• Publication Number:
  US 20050035600A1
• Time in Patent Office: Days
• US Class Current: 290/1.E
• CPC Class Codes: H01H 2239/076 Key stroke generating power
• CPC Class Codes: H02K 35/02 with moving magnets and stationary coil systems

Abstract

A voltage generator (1) for conversion of non-electrical primary energy (PE) to a voltage signal (USIG, USIG′) by means of induction. The voltage generator (1) has at least one mechanical energy store (2) for holding the primary energy (PE), and which has at least one changeover point (P). At least one induction system (3) is provided which can be coupled to the mechanical energy store (2), with the mechanical energy store (2) carrying out a movement on reaching the at least one changeover point (P) by means of which movement a voltage signal (USIG, USIG′) can be induced in the induction system (3).

Claims

1. A voltage generator (1) for conversion of non-electrical primary energy (PE) to a voltage signal (USIG, USIG′

) by means of induction, characterized in that the voltage generator (1) has at least

one mechanical energy store (2) for holding the primary energy (PE), and which has at least one changeover point (P),

at least one induction system (3) which can be coupled to the mechanical energy store (2),

with the mechanical energy store (2) carrying out a movement on reaching the at least one changeover point (P) by means of which movement a voltage signal (USIG, USIG′

) can be induced in the induction system (3).

2. The voltage generator (1) as claimed in claim 1, in which the mechanical energy store (2) contains a spring (6) to which a magnet, in particular a permanent magnet (7) is attached.

3. The voltage generator (1) as claimed in claim 2, in which the induction system (3) has an induction coil (8) with a ferromagnetic core (9), in which the magnet can be placed on the ferroelectric core.

4. A switch, in particular for mechanical operation, having a voltage generator (1) as claimed in claim 1.

5. A sensor system, having a voltage generator (1) as claimed in claim 1, and having at least one sensor (5).

6. A method for inductive voltage generation, in which

primary energy (PE) is stored in a mechanical energy store (2) until at least one changeover point (P) is reached,

the mechanical energy store (2) is moved on reaching the changeover point (P) such that a voltage signal (USIG, USIG′

) is generated in an induction system (3) which is coupled to the mechanical energy store (2).

7. The method as claimed in claim 6, in which the primary energy (PE) is stored in the mechanical energy store (2) by expansion or deformation of said mechanical energy store (2).

8. The method as claimed in claim 6, in which, on reaching the changeover point (P), a magnet, in particular a permanent magnet (7), is moved such that an induction voltage (USIG, USIG′

) is generated by means of a change in a magnetic flux (Φ

) in the area of an induction coil (8).