JPH04277191A - Control device for escalator - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention]

[Purpose of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an escalator operation control device, and more particularly to an escalator control device that minimizes interruptions in escalator operation due to overboarding of passengers and enables efficient operation.

0002

[Prior Art] In conventional escalators, it was common for the escalator to stop if an overload detector installed to protect the motor was activated, but in order to stop the escalator without prior notice to the passengers who were using the escalator. It was extremely dangerous for passengers who did not have the handrails to hold on to the railings, causing them to fall. Furthermore, the escalator would stop every time it became overloaded, which not only caused great inconvenience to users but also degraded service quality. FIG. 4 shows a flowchart of a conventional operation control circuit.

0003

[Problems to be Solved by the Invention] As described above, in the conventional system, the escalator stops every time the overload detector operates. An object of the present invention is to provide an escalator control device that can minimize interruptions in escalator operation with a simple circuit configuration. [Structure of the invention]

0004

[Means for Solving the Problems] FIG. 1 is a block diagram of an escalator control device according to the present invention, in which 1 is a safety device, 2 is an escalator control circuit, 3 is a load current detector, and 4 is an alarm circuit. 5 depending on the load current detected signal
This is a means for operating the voice synthesizer of 7 or the alarm of 7. 6 is an electric motor that drives the escalator.

[0005]

[Operation] When the escalator is operating at the rated load or lower, a normal guidance announcement is made, but if a load current exceeding a preset standard is detected, the alarm circuit 4 and 5 A signal is output to the voice synthesizer of the vehicle to prevent the user from boarding the vehicle using audio and warnings. However, if the load current increases further, the escalator will be stopped to protect the equipment.
The escalator is stopped after outputting a signal from the alarm circuit 8 to alert the passengers by sounding the alarm 8, and at the same time informing the passengers that the escalator is to be stopped using the voice synthesizer 5. The processing at this time is shown in the flowchart of FIG.

[0006]

[Embodiment] An embodiment of the present invention will be explained with reference to FIG.

Reference numeral 1 denotes a safety device, 2 an operation control circuit, and 4 an alarm circuit, which issues an alarm based on the signal output from the load current detector 3 and operates the voice synthesizer 5. 6 is an electric motor for driving the escalator, and 8 is an alarm device such as a bell or buzzer, which is operated by the alarm circuit 4. 7 is a loudspeaker such as a speaker.

A case in which the load current detector No. 3 operates while the escalator is in operation will be explained with reference to FIGS. 1 and 3. Note that FIG. 3 shows the operating range of the load current detector. Now, if the load current detector 3 operates in area B, it outputs a signal to the alarm circuit 4 and issues an alarm to alert the user, and the voice synthesizer broadcasts a message to prevent the user from boarding the vehicle. suppress. Next, when the escalator operates in area C, it operates in the same manner as described above, but in this case, the broadcast informs the passengers that the escalator should be stopped. This prevents the vehicle from falling when stopped.

[0009] In other embodiments, a warning device is used to warn the user, but it is also possible to warn the user of overboarding by reducing the operating speed of the escalator using an inverter or the like. In addition, even if the vehicle should stop, the speed will be reduced, so the shock of stopping will be kept low.

0010

[Effects of the Invention] As described above, according to the present invention, it is possible to prevent the operation from being stopped due to excessive riding by a user, thereby enabling safe and highly serviceable operation.

[Brief explanation of the drawing]

FIG. 1 is a block diagram of an embodiment of an escalator control device according to the present invention.

FIG. 2 is a flow chart diagram showing the operation of the present invention.

FIG. 3 is a graph showing the operation of a load current detector according to the present invention.

FIG. 4 is a flow chart diagram showing the operation of a conventional escalator.

[Explanation of symbols]

1... Safety circuit, 2... Control circuit, 3... Load current detector, 4
...Alarm circuit, 5...Speech synthesizer, 6...Electric motor, 7...Speaker.

Claims (1)

[Claims] 1. A load current detection means for detecting the load of an electric motor for driving an escalator, and an alarm device and a voice synthesis device operated by an output signal of the load current detection means, and when the load is rated, the voice synthesis device The device broadcasts a guidance announcement, and in the event of a slight overload, a warning and voice will be used to prevent passengers from boarding, and in the event of a heavy load, the escalator will be stopped after audible announcement to the passengers that the escalator will be stopped. escalator control device.