ELECTROMOTIVE DRIVE ARRANGEMENT
An electric-motor drive arrangement is proposed having at least one electric motor and having at least one control device, wherein the electric-motor drive arrangement has a measurement data processing apparatus and a non-volatile memory. In this case, the memory is connected to a comparator which operates at least one optical display block of a display apparatus when a predetermined set value is reached or exceeded.
1 .- 20 . (canceled)
21 . An electromotive drive arrangement for an adjustable component of an item of furniture, the drive arrangement comprising:
at least one electric motor;
a linearly movable or rotatable driven element driven by the electric motor and operatively connected to the adjustable component of the item of furniture;
at least one control device controlling operation of the electric motor; and
at least one measurement data processing device for determining at least one value corresponding to wear of the electromotive drive arrangement.
22 . The electromotive drive arrangement of claim 21 , further comprising a memory arranged on or integrated in the measurement data processing device, said memory storing the at least one value corresponding to wear of the electromotive drive arrangement.
23 . The electromotive drive arrangement of claim 21 , wherein the measurement data processing device further comprises a computing device for computing from input values representing operating parameters of the electromotive drive arrangement the at least one value that corresponds to wear of the electromotive drive arrangement.
24 . The electromotive drive arrangement of claim 23 , wherein the measurement data processing device further comprises at least one of a counter for counting switch-on processes of the electromotive drive arrangement or a time measuring device for measuring switch-on durations of the electromotive drive arrangement, wherein the operating parameters include the counted switch-on processes or the measured switch-on durations.
25 . The electromotive drive arrangement of claim 23 , wherein the measurement data processing device further comprises a current measuring device for measuring a current value of the electromotive drive arrangement, said current value representing an operating parameter.
26 . The electromotive drive arrangement of claim 21 , wherein the measurement data processing device comprises a digital microcontroller or a network of interconnected operational amplifiers in form of an analog computer with at least one integrator, or both.
27 . The electromotive drive arrangement of claim 22 , wherein the measurement data processing device comprises a comparator for comparing the value corresponding to wear of the electromotive drive arrangement stored in the memory with a predetermined nominal value.
28 . The electromotive drive arrangement of claim 27 , wherein at least one of the measurement data processing device or the control device comprises a display device configured to display an actual wear state as a function of a comparison value determined by the comparator.
29 . The electromotive drive arrangement of claim 28 , wherein the display device is constructed as an LCD or an LED display.
30 . The electromotive drive arrangement of claim 28 , wherein the display device displays the actual wear state of the electromotive drive arrangement in a single color or in multiple colors.
31 . The electromotive drive arrangement of claim 28 , wherein the display device displays a remaining time until a next scheduled maintenance.
32 . The electromotive drive arrangement of claim 22 , wherein the memory is read by a reading device.
33 . The electromotive drive arrangement of claim 22 , wherein the memory is configured for storing at least a segment of a current curve or a switch-on duration of the electromotive drive arrangement, or both.
34 . A method for determining an actual wear state of an electromotive drive arrangement having a linearly movable or rotatable driven member, which is operatively connected with a component of an item of furniture to be adjusted, comprising the steps of:
measuring operating parameters of the electromotive drive arrangement;
inputting the operating parameters as input variables in a measurement data processing device for determining a value; and
determining the wear state of the electromotive drive arrangement based on the determined value.
35 . The method of claim 34 , wherein measuring the operating parameters includes measuring at least one of a switch-on frequency or measuring a switch-on duration of the electromotive drive arrangement.
36 . The method of claim 35 , wherein measuring the operating parameters further includes measuring at least one current value of the electromotive drive arrangement.
37 . The method of claim 34 , characterized in that the value is determined from the inputted operating parameters based on stored table values.
38 . The method of claim 34 , wherein the measurement data processing device determines the value by computation using a predetermined computing algorithm.
39 . The method of claim 34 , wherein the wear state of the electromotive drive arrangement is determined based on a comparison between the determined value and a predetermined nominal value.
40 . The method of claim 39 , wherein the wear state obtained based on the comparison is stored in the memory.
41 . The method of claim 40 , wherein the wear state is displayed on a display device or read from the memory with a suitable reading device.