Device for Contactless Detection of Filling Levels

• US 20080201013A1
• Filed: 02/04/2008
• Published: 08/21/2008
• Est. Priority Date: 08/03/2005
• Status: Abandoned Application

• Current Assignee: SSI Schaefer Peem GmbH
• Original Assignee: SSI Schaefer Peem GmbH
• Inventors: Schaefer, Gerhard
• Application Number:
  US12/025,301
• Publication Number:
  US 20080201013A1
• Time in Patent Office: Days
• US Class Current: 700/244
• CPC Class Codes: B65G 1/1376 the orders being assembled on a commissioning conveyor

Abstract

An apparatus for contactless detection of filling levels of automatic machine shafts, each including removal units of an order-picking system, wherein the removal units dispense piece goods on one or more conveyor units. A distance measuring device is provided which can travel along a guidance track to measurement positions associated with different automatic machine shafts. The guidance track is provided on the automatic machine shafts, and the distance measuring device has a reading unit which can be pivoted into a plane of each automatic machine shaft.

Claims

1. An apparatus for contactless detection of filling levels of automatic machine shafts, each comprising removal units of an order-picking system, wherein the removal units dispense piece goods on one or more conveyor units, wherein a distance measuring device is provided which can travel along a guidance track to measurement positions associated with different automatic machine shafts, the guidance track being provided on the automatic machine shafts, and the distance measuring device having a reading unit which can be pivoted into a plane of each automatic machine shaft.

2. The apparatus of claim 1, wherein the distance measuring device operates by means of optical scanning or supersonic.

3. The apparatus of claims 1, wherein the automatic machine shafts are arranged in automatic machine shaft lines obliquely inclined relative to the conveyor unit, the guidance track for the distance measuring device being arranged in a region of an imaginary intersection line formed by planes of the automatic machine shaft line.

4. The apparatus of claim 1, wherein the automatic machine shafts are arranged in automatic machine shaft lines, the guidance track for the distance measuring device running along an upper end region of the automatic machine shaft lines, wherein the guidance track comprises a closed loop-like course so that of the distance measuring device continuously moves on the guidance track.

5. The apparatus of claim 1, wherein the distance measuring device has a device for optically deflecting emitted measuring beams.

6. The apparatus of claim 5, wherein the device for optically deflecting is a mirror.

7. The apparatus of claim 1, wherein the distance measuring device is kept endlessly movable along a track section assigned thereto on the guidance track.

8. The apparatus of claim 7, wherein the distance measuring device moves from a first end position to a second end position.

9. The apparatus of claim 1, wherein a computer is provided which is connected to the distance measuring device and serves for associating received measurement data with position data of the distance measuring device.

10. The apparatus of claim 1, wherein at least one sensor is provided at the distance measuring device, the sensor detecting walls while the distance measuring device travels, the walls separating individual automatic machine shafts from each other.

11. A method for contactless detecting filling levels of automatic machine shafts having removal units of an order-picking systems by means of a distance measuring device, comprising the following steps:

positioning the distance measuring device at a measuring position along a guidance track being provided on an automatic machine shaft;

orientating the distance measuring device into the automatic machine shaft;

performing detection of the filling level of the automatic machine shaft;

associating the obtained data with the position data of the distance measuring device; and

positioning the distance measuring device at another automatic machine shaft, and repeating the previous steps.

12. The method of claim 11, wherein the distance measuring device is returned at the end of a track section assigned thereto on the guidance track opposite to its previous movement direction along the track section traveled before, and updating the measuring data obtained at the automatic machine shafts traveled by performing the measuring process in inverted order again.

13. The method of claim 12, wherein the process of travelling the track section of the guidance track with subsequently updating the measuring data is repeated continuously or in arbitrary intervals.

14. The method of claim 11, wherein the detected data are forwarded to a central microprocessor.

15. The method of claim 14, wherein the detected data are evaluated in accordance with adjustable parameters, and depicted on a central monitor.

16. The method of claim 11, wherein the distance measuring device moves along defined track sections of the guidance track in alternating movement directions.

17. The method of claim 16, wherein a difference of the filling level in the automatic machine shaft, in case of piece goods arranged disordered in the automatic machine shafts, is determined by means of the distance measuring device during the performance of dispensing piece goods at the removal unit.

18. The method of claim 17, wherein the piece goods size, and thus the stock of the piece goods in the respective automatic machine shaft, is calculated based on the determined difference of the filling level in the automatic machine shaft during the dispense process of piece goods by means of a calculating unit.

19. The method of claim 11, wherein the walls separating the individual automatic machine shafts from each other are detected by a sensor, during the passing of the distance measuring device for allowing accurate determination of the next measuring position.

20. The method of claim 11, wherein the distance measuring device is optoelectronic.