Transmission device

• US 5,055,775 A
• Filed: 03/19/1990
• Issued: 10/08/1991
• Est. Priority Date: 03/18/1989
• Status: Expired due to Fees

• Current Assignee: Scherz Michael Drmed Drrer NAT
• Original Assignee: Michael Scherz
• Inventors: Scherz, Michael, Roschlau, Werner, Jahn, Wilhelm
• Primary Examiner(s): Wieder, Kenneth A.
• Assistant Examiner(s): Burns, William J.
• Application Number:
  US07/496,198
• Time in Patent Office: 568 Days
• Field of Search: 324/158 MG, 324/167, 324/175, 336/120, 310/268, 310/176, 318/263, 318/271
• US Class Current: 324/765.01
• CPC Class Codes: G08C 17/04 using magnetically coupled devices

Abstract

An apparatus for tranmitting signals that can be broken down into at least one AC voltage component between a rotor and a stator from a sender unit to a receiver unit, with the help of annular coils, the coil windings of which form components of the sender or receiver unit, and which are arranged coaxially to the axis of rotation of the rotor and inductively coupled is to be developed so as to generate measured values that are associated with the rotational speed. According to the present invention, this is done in that at least one pair (13, 14; 15, 16) of annular coils is provided for supplying voltage to components on the rotor; in that at least one additional pair (17, 18) of annular coils is provided for the transmission of values that are to be measured on the rotor by means of a measuring system, from the rotor to the stator; in that a sensor element (43) for scanning the rotational speed of the rotor is provided; and in that a switching unit (44) is provided, with the help of which the measured values associated with the rotational speed of the rotor can be further processed or displayed (FIG. 3).

Claims

1. An apparatus for transmitting signals that can be broken down into at least one AC-voltage component from a sender to a receiver unit, comprising:

a rotor including a disc-shaped rotor core element rotatable about an axis and having a plurality of annular rotor grooves formed in one face thereof concentrically about said axis;

a plurality of annular rotor coil windings mounted in said plurality of rotor grooves, respectively, said plurality of rotor coil windings being adapted to connect to one of the sender unit and the receiver unit;

a stator including a disc-shaped stator core element mounted adjacent said rotor core element so as to form a gap therebetween, said stator core element having a plurality of annular stator grooves formed concentrically about said axis in one face of said stator core element which is opposed to said one face of said rotor core element;

a plurality of annular stator coil windings mounted in said plurality of stator grooves, respectively, said plurality of stator coil windings being inductively coupled with said plurality of rotor coil windings, respectively, and being adapted to connect to the other of the sender unit and the receiver unit;

a measurement apparatus mounted on said rotor;

a first means, comprising a first pair of coil windings including a first of said rotor coil windings and a first of said stator coil windings which is aligned with said first rotor coil winding, for transmitting supply voltage from said stator to said measurement apparatus;

digitizing means for digitizing signals outputted from said measurement apparatus;

a second means, comprising a second pair of coil windings including a second of said rotor coil windings and a second of said stator coil windings which is aligned with said second rotor coil winding, for transmitting digitized signals from said digitizing means to said stator;

sensor means for sensing a speed of rotation of said rotor and outputting a speed signal; and

processing means, operatively connected to said speed sensor and said stator, for further processing or displaying said digitizing signals and said speed signal.

2. An apparatus as defined in claim 1, further comprising

a third means, comprising at least a third pair of coil windings including a third of said rotor coil windings and a third of said stator coil windings which is aligned with said third rotor coil winding, for transmitting signals which initiate switching processes in said measurement apparatus.

3. An apparatus as defined in claim 1, further comprising:

at least one annular screening ring mounted on said rotor between at least two of said rotor coil windings, respectively.

4. An apparatus as defined in claim 3, further comprising

at least one annular screening ring mounted on said stator between at least two of said stator coil windings, respectively.

5. An apparatus as defined in claim 4, wherein

said annular screening rings mounted on both said rotor and said stator are formed of an electrically conductive material.