JPH0399528A - Mobile body communication equipment - Google Patents

Abstract

PURPOSE:To manage the operation time of a working vehicle and to prevent erroneous indication by transmitting information of the operation start and the operation end in accordance with turning-on/off of an operation switch. CONSTITUTION:When a key switch 21 for an engine 19 of a forklift 3 is turned on, operation start information is transmitted from a transmission/reception equipment 5; and when the switch 21 is turned off, operation end information is transmitted from the equipment 5. Consequently, the reception time of operation start information and that of operation end information are recorded in an office 1 to manage the operation time of the forklift 3.

Description

[Detailed Description of the Invention] [Industrial Field of Application] The present invention conveys information such as work instructions from a command center such as an office to a work vehicle such as a forklift that is working inside a factory, warehouse, etc. Alternatively, it relates to a mobile communication device that transmits information such as confirmation and completion of work instructions from a work vehicle to a command center.

[Prior Art] Conventionally, as this type of mobile communication device, a transmitter/receiver device is installed in a command center such as an office, and a work vehicle such as a forklift that operates within the premises of a factory, warehouse, etc. There is. This mobile communication device transmits work information consisting of work instructions, emergency information, etc. from the transmitting/receiving device at the command center, and also sends confirmation information indicating that the work instruction has been confirmed and that the work based on the work instruction has been completed. Completion information that notifies the command center of what has been done is transmitted from the transmitting/receiving device of the work vehicle.

[Problem B to be Solved by the Invention] However, in the conventional mobile communication device, by transmitting and receiving various information between both transmitting and receiving devices, the command center receives and receives work information, confirmation information, completion information, etc. Although it is possible to manage the work contents of the work vehicles, it is not possible to manage the operating hours of the work vehicles. Therefore, there is a risk that work instructions may be erroneously issued to a work vehicle that is not being driven and is stopped.

The present invention was made in view of the above-mentioned circumstances, and
The purpose of this is to enable the command center to know the time when operation of the work vehicle started and the time when operation of the same work vehicle ended.
To provide a mobile communication device that can manage the operating time of a working vehicle and prevent erroneous instructions from being issued to a stopped working vehicle.

[Means for Solving the Problems] Therefore, in order to achieve the above-mentioned object, the present invention provides a method for installing a transmitting means in a work vehicle that performs work within a premises, and also equipping a command center that issues instructions to the work vehicle with a receiving means. In the mobile communication device installed so that the receiving means receives the information transmitted from the transmitting means, when it is detected that a switch for driving the work vehicle is turned on, the information transmitted from the transmitting means A mobile communication device is provided with a first control means for transmitting operation start information, and a second control means for detecting that the switch is turned off and causing the transmission means to transmit operation end information. This is a summary.

[Operation] When the first control means detects that the switch for driving the work vehicle has been turned on, it causes the transmission means to transmit driving start information. Further, when the second control means detects that the switch is turned off, the second control means causes the transmission means to transmit operation end information. These operation start information and operation start information number are received by a receiving means installed at the command center.

[Example] An example embodying the present invention will be described below with reference to the drawings.

As shown in Fig. 1.2, a transmitting/receiving device 4 as a receiving means is installed in an office 1 as a command center.
Messages are sent to a forklift 3 serving as a work vehicle that performs work within the premises of the factory 2. This transmitting/receiving device 4 includes an input section 6 such as a keyboard for inputting messages, a control section 7 that controls input signals from the human power section 6 and inputs/outputs electrical signals, and It is comprised of a radio section 8 that transmits electrical signals as radio waves and receives radio waves from the forklift 3.

The message inputted by the human power section 6 is work information for instructing the work @W of the forklift 3 on the work content. Furthermore, the radio section 8 is equipped with an FSX modulation circuit and a demodulation circuit, and is configured to use the frequency of an empty television channel and to transmit and receive weak radio waves that are not subject to the regulations of the Radio Law.

A transmitting/receiving device 5 serving as a transmitting means for exchanging radio waves with the transmitting/receiving device 4 is mounted on the instrument panel ll of the forklift 3. The transmitting/receiving device 5 is equipped with an FSK modulation circuit and a demodulating circuit similar to the radio unit 8, and uses the frequency of an empty TV channel and is a wireless device for transmitting and receiving weak radio waves that are not regulated by the Radio Law. A control unit 1 as a first and second control means is provided in the wireless unit 9.
0 is connected.

As shown in FIGS. 2 and 3, on the output side of the control unit 10, there is a liquid crystal display (hereinafter referred to as LCD) 12 for displaying the current work information received by the wireless unit 9.
A printer 13 for printing the work information displayed on the LCD 12 onto printing paper P is connected. These LCD 12 and printer 13 are incorporated into the front panel 5a of the transmitting/receiving device 5.

Also, connected to the output side of the control section 10 are a rotating light 15 that turns on when work information is received by the wireless section 9, and a buzzer 16 that emits a notification sound.

The revolving light 15 is a helad guard 14 of the forklift 3.
The buzzer 16 is installed on the front panel 5a of the transmitting/receiving device 5, so that even when the worker W is away from the forklift 3, the work information can be transmitted to the wireless section 9. This will notify you that it has been received.

On the other hand, a confirmation button 17 and a completion button 18 are connected to the input side of the control unit 10. The confirmation button 17 is used to stop the buzzer 16 and revolving light 15 after the operator W confirms their operation, and to cause the radio section 9 to transmit confirmation information indicating that the confirmation has been made. be. Further, the completion button 18 erases the display content displayed on the LCD 12 after the work based on the instructed work information is completed, and causes the wireless unit 9 to transmit completion information indicating that the work has been completed. It is for.

These confirmation button 17 and completion button 18 are incorporated in the lower part of the front panel 5a of the transmitting/receiving device 5.

By the way, the forklift 3 of this embodiment is equipped with a gasoline engine (hereinafter simply referred to as engine) 19 as a prime mover. an ignition coil for igniting the air-fuel mixture sucked into the combustion chamber of the engine 19 and compressed;
A battery 20 as a power source is connected to an ignition device including a distributor, a spark plug, etc., and a starter motor for starting the engine. And these ignition system, starter motor and battery 2
Voltage is applied from the battery 20 to the ignition device and the starter motor by turning on and off the key switch 21 provided between the The voltage application can be applied or stopped.

Here, the engine 19 is started by once turning the key switch 21 to the start position, and then the time when the key switch 21 is automatically returned to the ON position is defined as the time when the forklift 3 starts operating. Then, the key switch 21 is rotated to the OFF position and the engine 19 is turned on.
The time when the forklift 3 is stopped is defined as the time when the operation of the forklift 3 ends.

FIG. 5(a) shows the voltage v1 applied to the ignition device and starter motor by the rotational operation of the key switch 21. In the figure, for example, at time t1, the key switch 21 changes from the OFF position to the start position. When the key switch 21 is rotated from the ON position to the OFF position at time t2, voltage is applied from the battery 20 to the ignition device and the starter motor. Application of voltage to the device is then stopped.

The battery 20 is connected to the aforementioned transmitting/receiving device 5 of the forklift 3 via the key switch 21 and a delay circuit 22 consisting of a charging/discharging circuit, etc., and this battery 20 acts as a driving power source for the transmitting/receiving device 5. It looks like this. FIG. 5(b) shows the voltage V2 applied to the transmitting/receiving device 5 by the rotational operation of the key switch 21. In the figure, for example, at time t1, the key switch 2
1 is rotated to the ON position, voltage is directly applied from the battery 20 to the transmitting/receiving device 5.

Subsequently, when the key switch 21 is rotated to the OFF position at time t2, although the direct voltage application from the battery 20 to the transmitting/receiving device 5 is stopped, the delay circuit 22
By discharging the charges stored in , voltage continues to be applied to the transmitting/receiving device 5 . And time t2
At time t3 after a predetermined period of time has elapsed, the delay circuit 2
The voltage application from 2 to the transmitting/receiving device 5 disappears and is stopped.

When the key switch 21 is rotated to the ON position,
The control unit 10 causes the radio unit 9 to transmit operation start information to inform the office 1 that the operation of the forklift 3 has started. Further, when the key switch 21 is turned to the OFF position, the control unit 10 causes the wireless unit 9 to transmit operation end information to inform the office 1 that the operation of the forklift 3 has ended. There is.

Furthermore, when the work information from the transmitting/receiving device 4 is received by the wireless unit 9, the control unit 10 displays the work information on the LCD 12 and causes the printer 13 to print the work information on the printing paper P. Further, the control unit 10 causes the buzzer 16 to generate a notification sound and also lights up the revolving light 15.

Next, the operation of this embodiment configured as described above will be explained in the fourth section.
This will be explained according to Figure 5.

First, in order to start operating the stopped forklift 3, the key switch 21 is operated to the ON position 8 by the worker W at time tl (step 1, hereinafter, step is expressed as S). 20 applies voltage to the ignition device and the starter motor, and voltage is also applied to the transmitting/receiving device 5, and the control unit 10 sends operation start information to the wireless unit 9 indicating that the forklift 3 has been operated and work has started. (S2). For this reason,
By receiving the operation start information through the transmitting/receiving bag W4, the office l can know the time t1 when the operation of the forklift 3 has started.

Subsequently, the control section 1o of the transmitting/receiving device 5 mutually transmits and receives various information to and from the transmitting/receiving device 4 (S3). When it is determined that the work information has been received, the work information is displayed on the LCD 12 and printed by the printer 13. Further, the control unit 10 operates the buzzer 16 to generate a notification sound and lights up the revolving light 15. Therefore, the worker W knows that the work information has been received by the notification sound from the buzzer 16, and can know the contents of the work information by looking at the LCD 12 or the printer 13.

After the worker W confirms that the buzzer 16 or rotating light 15 has been activated as described above, the control unit 10 presses the confirmation button 17.
Waits for the confirmation button 17 to be pressed, and when it is determined that the confirmation button 17 has been pressed, the buzzer 16 and revolving light 15 are stopped, and the l+i i=information is used to notify the office 1 that the reception of the work information has been confirmed. is transmitted from the wireless section 9.

Furthermore, after the buzzer 16 and rotating light 15 are stopped, the control unit 1
0 waits for the completion button 18 to be pressed, and when it is determined that the completion button 18 has been pressed, it is determined that the work based on the work information displayed on the LCD 12 has been completed, and the LCD
The work information displayed on 12 is erased, and completion information for informing office 1 that the work has been completed is transmitted from wireless section 9. Therefore, the office 1 can manage various information such as work information, confirmation information, and completion information transmitted and received between the two transmitting/receiving devices 4 and 5.

When all the work based on the work information from the office 1 is completed and the key switch 21 is turned to the OFF position at time t2 to stop the operation of the engine 19 of the forklift 3 (S4), the battery Application of voltage from 20 to the ignition device is stopped. At this time, if the voltage application to the transmitting/receiving device 5 is also stopped, the operation end information cannot be transmitted; however, in this embodiment, the delay circuit 22
, the delay circuit 22 continues to apply voltage to the transmitting/receiving device 5 even after the key switch 21 is turned off.

Then, when the key switch 21 is rotated to the OFF position as described above, the control unit 10 turns the key switch 21 into the OFF position.
The wireless unit 9 transmits operation end information indicating that all the work based on the work information transmitted from the office 1 in response to the FF operation has been completed and the operation of the engine 19 of the forklift 3 has been stopped (S5). . Therefore, by receiving the operation completion information with the transmitting/receiving device 4, the office 1 can know that the work has been completed at time t2. After a predetermined period of time has elapsed after the rotation of the key switch 21, at time t3, the application of voltage to the transmitting/receiving device 5 is automatically stopped.

In this way, in the communication device of this embodiment, the key switch 21
When the key switch 21 is turned to the ON position (tl), the transmitting/receiving device 5 transmits operation start information, and the key switch 21 is turned OFF.
Since the driving end information is transmitted from the transmitting/receiving bag W5 when it is rotated to the F position (t2), in the office 1, the time L1 when driving start information is received and the time t2 when driving end information is received. By recording this, the operating time of the forklift 3 can be managed.

Therefore, in this embodiment, not only information items such as work information, confirmation information, and completion information transmitted and received between the two transmitting/receiving devices 4 and 5, but also the time required for each work and the operating hours per day are managed. becomes possible. In addition, since it is easy to distinguish between the forklift 3 that is not operating with the engine 19 stopped and the forklift 3 that is operating with the engine 19 running, it is possible to easily distinguish between the This will prevent you from issuing work instructions by mistake.

Note that the present invention is not limited to the configuration of the embodiment described above, and for example, when the forklift 3 is in operation from when the key switch 21 is turned to the ON position until it is turned to the OFF position. An operation signal indicating a certain condition may be outputted from the wireless section 9 at a constant cycle. In this way, the operating time of the forklift 3 can be managed by determining that the work has been completed when the operation signal is not output for a certain period of time.
The delay circuit 22 in the previous embodiment can be omitted.

[Effects of the Invention] As described in detail above, according to the present invention, the time when the operation of the work vehicle was started and the time when the operation of the work vehicle was finished can be known at the command center, and the time when the operation of the work vehicle is finished. This has the excellent effect of making it possible to manage the operating time of the vehicle, and thereby preventing erroneous instructions from being issued to a work vehicle that is not in operation and is stopped.

[Brief explanation of drawings]

FIG. 1 is a schematic configuration diagram showing an embodiment embodying the present invention, FIG. 2 is a block diagram showing the relationship between an office transmitting/receiving device and a forklift transmitting/receiving device, and FIG. 3 is a block diagram of a forklift transmitting/receiving device. A partial front view, FIG. 4 is a flowchart showing the operation of the forklift transmitter/receiver, and FIG.
Figures a) and (b) are timing charts showing the voltages applied to the ignition device and the starter motor, and the voltages applied to the transmitting/receiving device of the forklift. In the figure, 1 is an office as a command center, 3 is a forklift as a work vehicle, 4 is a transmitting/receiving device as a receiving means, 5
10 is a transmitting/receiving device as a transmitting means, 10 is a control unit as first and second control means, and 21 is a key switch.

Claims (1)

[Claims] 1. A transmitting means is installed in a working vehicle that performs work within the premises, and a receiving means is installed in a command center that issues instructions to the working vehicle, and the information transmitted from the transmitting means is transmitted to the receiving means. In the mobile communication device configured to receive driving start information from the transmitting means, the first control means detects that a switch for driving the work vehicle is turned on and causes the transmitting means to transmit driving start information; A mobile communication device comprising: second control means that detects that the switch is turned off and causes the transmission means to transmit operation end information.