JPH01219908A - Unattended carriage - Google Patents

Abstract

PURPOSE:To prevent an accident and runaway of a computer by turning on/off a main power source based on output data from a backed-up time detector. CONSTITUTION:An unattended carriage consists of a time detector 2, a backup power source 1 which always operates the detector 2, an automatic power-on/off device 3 which turns on/off a main power source 4 to supply power to a running controller 5, a driving device 6, and a gyrosensor 7, etc. When the time obtained by subtracting the warming-up time from a preliminarily set time comes, the time detector 2 outputs data to the automatic power-on/off device 3. This device 3 turns on the main power source 4 in accordance with this data to supply power to the running controller 5 and the driving device 6, thus warming up each device. When a carrying command is not issued for a certain time after a preliminarily set end time, termination of all of the work is judged to return the vehicle to a prescribed position and the main power source 4 is turned off.

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Industrial Application Field) The present invention relates to an automatic guided vehicle used for transporting cargo.

(Prior Art) In recent years, automatic guided vehicles have been increasingly used to transport cargo within factories, mainly in the manufacturing and service industries.

After the main power is turned on, the transport vehicle automatically travels and delivers cargo based on commands from the main body's keyboard or ground control panel. - After finishing the day's work, the main power of the conveyance vehicle is turned off by the worker at a predetermined position.

(Problems to be Solved by the Invention) Conventionally, as described above, there is a method for automatically inputting a destination command to an automatic guided vehicle using an operator's input from a keyboard and an optical data transmission device.

In a system that adopts the latter, in combination with a ground control panel, it is possible to automatically control the travel and transfer of transport vehicles.

However, with conventional automated guided vehicles, turning on the main power,
The cutting had to be done by a worker, which was an impediment to complete unmanned operation. Furthermore, if the conveyance vehicle has a device that requires warming up, there is also the trouble of having to turn on the power a certain period of time before the start of work.

The present invention can provide an automatic guided vehicle that can shorten warming-up time and prevent accidents caused by forgetting to turn off the main power.

[Structure of the invention]

(Means for Solving the Problems) In order to achieve the above object, in the present invention, as shown in FIG. An operating time detection device 2, an automatic power on/off device 3 that turns on and off the main power source 4 based on time data from the time detection device 2, and a travel control that receives power supply from the automatic power important device 3. The device 5 and the drive device 6 constitute an automatic guided vehicle.

(Function) In the conveyance vehicle configured in this way, the time detection device, which is driven by a backup power source separated from the main power source, detects the time at a time when the warm-up time is less than the preset time. When this occurs, the data is output to the automatic power supply important device. The automatic power supply device turns on the main power supply according to the data, supplies power to the travel control device and drive device, and measures the warming up of each device.

Next, after the preset end time has elapsed, if there is no conveyance command for a certain period of time, it is determined that the work has ended, and the main power is turned off after traveling to a predetermined position.

Judging from the time set in this way, the main power is turned on and off.
By turning it off, it is possible to automatically complete warming up and prevent accidents caused by forgetting to turn off the main power.

(Embodiment) The configuration of an embodiment of an automatic guided vehicle according to the present invention will be described using FIG. 2.

FIG. 2 is a schematic groove diagram showing one embodiment of the present invention. In the figure, 1 is a backup power source for constantly operating the time detection device 2, 2 is a time detection device for detecting the target time, and 3 is for turning on/off the main power source 4 and controlling the running. This is an automatic power supply device that supplies power to the device 5, drive device 6, and gyroscope sensor.

The operation of an embodiment of an automatic guided vehicle according to the present invention will be explained using the drawings.

Here, in order to make the explanation easier to understand, it is assumed that the time chart shown in FIG. 3 has been input into the transport vehicle in advance.

First, the operation when the main power is turned on will be explained using FIG. 4.

When the main power supply is off, only the time detection device 2 is operated by the backup power supply 1 to check the time. Gyro sensor warming-up time TMI
When this happens, the time detection device 2 outputs a command to the automatic power supply device 3 to turn on the power of the gyro sensor. Based on this command, the automatic power supply device 3 supplies power to the gyro sensor and starts warming up. Next, when the transport work start time TM2 arrives, the automatic power supply control device 3 turns on all power supplies based on the output from the time detection device 2, and starts supplying power to the travel control computer 5 and the drive device 6. By this time TM2, gyro sensor 7
is warming up.

Next, the operation when the power is turned off will be explained using FIG.

When the conveyance work end time TM3 arrives, the time detection device @2
Data is output to the travel control device 5.

The travel control computer 5 waits to receive a transport command until a certain period of time has elapsed from the time it receives this data. When a command is received, it executes this command and then waits for reception again. If there is no command after a certain period of time has elapsed, it is determined that the main power has been turned off, and after traveling to a predetermined evacuation station, a main power off command is output to the automatic power saving device. The automatic power supply important device 3 turns off the main power supply in accordance with this command.

According to this embodiment, by using the backed up time detection device and automatic power on/off device, it is possible to turn on the power to the gyro sensor that requires warming up in advance. Also, accidents caused by forgetting to turn off the main power can be prevented.

(Effects of the Invention) As described above, according to the present invention, by turning on and off the main power supply based on the output data from the backed-up time detection device, warming-up time can be reduced to zero and the main power supply can be forgotten by turning off the main power supply. Accidents and computer runaways that occur due to battery voltage drop can be prevented.

[Brief explanation of the drawing]

Fig. 1 is a schematic configuration diagram of the device of the present invention, Fig. 2 is a schematic configuration diagram showing an embodiment of the present invention, Fig. 3 is a time chart, and Figs. 4 and 5 are main power supply on/off times. It is a control flowchart. 1... Backup power supply, 2... Time detection device,
3...Automatic power on/off device, 4...Main power source (battery), 5...Travel control device, 6...Drive device, 7.
...Gyro sensor, TMl...Gyro sensor warming-up start time, TM2...Transportation work start time, TM3...Transportation work end time. Agent Patent Attorney Nori Ken Yudo Daishimaru Nagi Figure 1 Figure 2 C Figure 3 Figure 4

Claims (1)

[Claims] In a conveyance vehicle that has a device that requires warming up for a certain period of time after the main power is turned on to the vehicle body, there is provided a time detection device that is driven by a backup power source separated from the main power source and detects a predetermined time, and a time detection device that detects a predetermined time. An unmanned conveyance system characterized by being equipped with an automatic power on/off device that turns on power to devices that require warming up based on an output signal, and then turns on/off the main power supplied to the travel control device and drive device after a certain period of time has elapsed. car.