JPH078789Y2 - Lifting control device for electric shutter - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial application] The present invention relates to a lifting control device for automatically opening and closing an electric shutter built in an opening such as a doorway of a building by a timer switch. It is a thing.

[Problems to be Solved by Prior Art and Invention] In general, some electric shutters of this type are controlled to open and close the shutter at a predetermined time. By the way, conventionally, in this device, the output of the timer switch is input to the circuit of the operation switch for opening, closing, and stopping the electric shutter for control. As a result, the time setting of the timer requires at least four kinds of time setting, that is, each time of opening and closing, and each time for keeping it ON for a predetermined time (for example, several seconds). It was complicated and troublesome, and there was the drawback of troubles caused by setting mistakes.

Moreover, automatic opening / closing control based on such a timer switch is generally provided in a place where unspecified persons such as banks and department stores come in and go out. While it is necessary to maintain the open state as it is during the time, it is required to manually control the opening / closing during the closing to allow the persons concerned to come and go. However, with such a manual opening / closing operation that can be performed in parallel with the automatic opening / closing by the timer switch, the opening / closing control is performed by the input of a false signal manually even though the open state is desired to be maintained. In order to avoid this, an automatic-manual switch is provided separately,
In the automatic state, there is no choice but to perform only the automatic opening / closing control by the timer switch, and then, when closing, the switching switch must be switched to the manual state in order to control the opening / closing manually, which makes the operation complicated. There's a problem.

[Means for Solving the Problem] In view of the above situation, the present invention was devised with the object of providing an elevator control device for an electric shutter that can eliminate these drawbacks. On the other hand, in an electric shutter in which a timer switch for setting the opening / closing time of the shutter curtain is connected to the control unit for outputting a lifting control command, the timer switch is turned on at the opening time set above. , OFF at closing time, and O during these times
On the other hand, the control unit has a signal change detecting means for detecting the rising and falling signal changes of the timer switch, and the signal change detecting means of the signal change detecting means. Up and down control command means for outputting a up and down control command for the corresponding shutter curtain based on signal change detection, and external signal ignoring means for ignoring external signals when the timer switch is in the ON state are provided. To do.

With this configuration, the present invention does not allow the opening / closing control timer setting to be halved, and prevents accidental closing operation even if an erroneous signal is input when the shutter curtain is opened. is there.

[Embodiment] Next, an embodiment of the present invention will be described with reference to the drawings. In the drawing, reference numeral 1 denotes a shutter curtain of an electric shutter, the shutter curtain 1 being wound around a winding shaft 3 provided in a shutter case 2, and the shutter curtain being driven by forward and reverse movements of an opening / closing device 4. It is the same as in the related art that 1 is moved up and down while being guided by the guide rails 5 to open and close the opening.

A control command from a shutter control panel 6 is input to the switch 4, and a control unit 7 configured by using a microcomputer is connected to the shutter control panel 6. That is, the control circuit section 8 provided in the control section 7 includes operation signals from the push button switches 9 for opening, closing, and stopping, and the upper and lower limit switches 10 respectively.
A necessary signal such as a detection signal from the above and a detection signal from an abnormality detection sensor 11 for detecting an abnormality such as obstacle detection during the descent of the shutter curtain 1 are input.

Next, the control procedure based on the output signal from the timer switch 12 will be described based on the flow chart of FIG. First, when the system is started and necessary data is read, it is determined whether the signal from the timer switch 12 is in the rising state, that is, whether the timer switch 12 is in the ON state. When the determination is YES as the ON state, the control unit 7 does not input an external input signal such as a radio signal or a push button, that is, ignores it, whereby the shutter curtain is opened. It is set to be maintained in the state.

On the other hand, when the signal from the timer switch 12 is judged not to be in the ON state and NO is judged, it is judged whether or not the state has changed to the rising state. The signal change detection means using the rising edge trigger detects this, and a YES determination is made. In this case, the switch drive circuit means 13
A rising control command is issued to the switch 4 by this.
Is driven, and an ascending control operation is performed to stop when the upper limit detection signal is output from the upper limit switch 10. When the timer switch 12 rises and changes to the ON state, the ON state is set to continue.

Further, when the signal from the timer switch 12 is judged as NO because it has not changed to the rising state, it is judged whether or not the signal has changed to the falling state. If the falling edge changes, the signal detection means using the falling edge trigger detects this and YES
Will be determined. In this case, a downward control command is issued to the switch drive circuit means 13, whereby the switch 4 is reversely driven and the lower limit detection signal from the lower limit switch 10 is output, or an abnormality occurs. The descent control operation is stopped so that the detection signal is output. When the timer switch 12 falls and changes to the OFF state, the OFF state is maintained as it is. In addition, it is determined that the falling state has not changed by judging whether the falling state has changed or not.
If the judgment is made, it is possible to manually control the raising and lowering by an external input means such as a radio or a push button.

In the embodiment of the present invention configured as described above, the raising / lowering control by the timer switch 12 of the shutter curtain 1 is
When the signal rises at the opening time A, the rise is controlled, and when the signal falls at the closing time B, the fall is controlled. As described above, according to the present invention, ascending / descending control is performed by setting the time of the timer switch 12, in which case the rise of the signal,
It controls based on the change to the falling edge,
Therefore, it is possible to reduce the number of timer sets in half by eliminating the need for a timer set for causing a signal that has been raised at a set time to fall after a predetermined time as in the conventional art.
Since the wiring between the timer switch 12 and the control circuit section 8 is only one system, the structure is simple and the timer switch 12
I never forget to close it.

In addition, this product is not controlled by external signal input when the signal from the timer switch 12 rises, that is, when the timer switch 12 is in the ON state, and only when it is in the fall state, that is, in the OFF state. Since the elevation control by signal input will be performed, for example, when a wireless signal is set as the external signal input,
When the shutter curtain 1 is opened, even if an external signal is transmitted, this will be maintained in the ignored automatic control state, so that the shutter curtain in the open state will not be accidentally closed due to a malfunction. . Moreover, with this device, when the timer switch is in the OFF state, it is possible to respond by an external signal based on a manual operation, but in this case, there is an advantage that it can be performed without switching between automatic and manual.

Of course, the present invention is not limited to the above-mentioned embodiment, and the point is that the timer switch is a signal continuation type, and the control unit detects the rising and falling changes of the signal from the timer switch. It only has to be controlled to move up and down. Further, it goes without saying that an alternation type switch may be connected instead of the timer switch and the opening / closing operation may be performed with this switch.

[Advantages] In short, since the present invention is configured as described above, the raising and lowering control by the control unit is based on the fact that the signal from the timer switch changes rising at the opening time and falling at the closing time. Therefore, the timer set need only be the opening time and the closing time, which is half that of the conventional one. Therefore, the timer set is not allowed to be easy, and troubles due to set mistakes can be avoided as much as possible, and reliable automatic lifting control is performed.

Moreover, this is a continuous type in which the timer switch continues to be turned on and off, and when the timer switch is turned on and the shutter curtain is open, the input of an external signal is ignored. , The shutter curtain will not be inadvertently closed by an external signal. On the other hand, when the timer switch is turned off and the shutter curtain is closed, it is possible to control the opening and closing of the shutter curtain by an external signal, and as a result, the rising and falling signals from the timer switch can be controlled. However, since it is effectively used as a signal for ignoring external signals and for switching between inputs, manual-automatic switching is not required when performing manual opening / closing control at the time of closing, resulting in good operability.

[Brief description of drawings]

FIG. 1 shows an embodiment of an elevator control device for an electric shutter according to the present invention. FIG. 1 is an overall front view of the electric shutter, FIG. 2 is a block circuit diagram of a control system, and FIG. Timing chart showing the opening / closing operation state, FIG. 4 is a wiring diagram of the timer switch portion, FIG. 5 is a flow chart of the control system, FIG. 6 is a timing chart showing the opening / closing operation state of the conventional example, FIG. FIG. 6 is a wiring diagram of a conventional timer switch unit. In the figure, 1 is a shutter curtain, 4 is a switch, 7 is a control unit, 8 is a control circuit unit, and 12 is a timer switch.

Claims (1)

[Scope of utility model registration request] 1. An electric shutter in which a timer switch for setting the opening / closing time of a shutter curtain is connected to a control unit for outputting a lift control command to a switch, wherein the timer switch is set as described above. At the opening time, it rises to ON, at the closing time it falls to OFF, and between these times, it is an output continuation type that continuously outputs the ON or OFF state as it is, while the control unit A signal change detecting means for detecting rise and fall signal changes of the timer switch, a lift control command means for outputting a corresponding lift control command of the shutter curtain based on the signal change detection of the signal change detecting means, and a timer switch. And an external signal ignoring means for ignoring an external signal when is ON.