JPS6330590U - - Google Patents

Description

[Brief explanation of the drawing]

FIG. 1 is a circuit block diagram showing an embodiment of the opening/closing position detection device for an electric shutter according to the present invention, and FIGS. 4 is a circuit block diagram showing an example of a conventional electric shutter opening/closing position detection device, FIG. 5 is a flowchart explaining the operation of the device, and FIG. 6 is an opening/closing position detection device for the electric shutter. FIG. 7 is a timing chart explaining the setting operation of the position detection device; FIG. 7 is a flow chart explaining the setting operation of the device; FIG. 8 is a timing chart explaining the operation of the device; FIG. , Diagram showing the installation state of the detection means, No. 10
The figures are external views of the electric shutter, Figure 11 and Figure 1.
FIG. 2 is a diagram showing a state in which the slat curtain is stopped at the lower limit position and the upper limit position by the operation of the above device. DESCRIPTION OF SYMBOLS 1... Slat curtain, 5... Motor, 6... Detection means (detector), 8... Curl, 11... Control device (
control unit), 12...equal division pulse generation calculation device (equal division pulse generation means), 14... correction device (correction means).

Claims (1)

[Claims for Utility Model Registration] Detecting means 6 for detecting a fixed interval between curls 8 of a slat curtain 1 that is raised or lowered by driving an electric motor 5 and outputting a pulse at each fixed interval; and input data. an equal division pulse generation means 12 that outputs a plurality of pulses that equally divide the fixed interval into a plurality of pulses based on; inputting the detection pulse and calculating data to be output to the equal division pulse generation means 12;
The count value of the pulses output from the detection means 6 and the equally divided pulse generation means 12 is used as a set value for the upper or lower limit stop position of the slat curtain 1, and the slat is raised or lowered based on the set value. a control unit 11 that controls the slat curtain 1 to stop by outputting a stop signal to the electric motor 5 when the curtain 1 reaches the upper limit or lower limit stop position;
This is an opening/closing position detection device for an electric shutter, and the control unit 11 is configured to detect when the slat curtain 1 reaches an upper limit or a lower limit stop position or a desired stop position and stops. When the curl 8 that outputs the last count value that matches the set value is located at a position shifted by a predetermined range with respect to the detection means 6, a correction value is calculated by performing a predetermined correction operation on the count value. However, when the curl 8 that outputs the first count value by detection by the detection means 6 after a predetermined time has elapsed from the activation of the slat curtain 1 is located at a position shifted from the detection means 6 by a predetermined range, An opening/closing position detection device for an electric shutter, characterized in that a correction means 14 for correcting the count value based on the correction value is provided.